CN118662319B - Transfer device - Google Patents

Abstract

A transfer device belongs to the field of medical displacement machines and comprises a folding self-locking support frame, a driven driving mechanism, a driving mechanism, two stretcher lifting mechanisms, a transmission shaft, four three-section lifting rods, two stretchers and two steel wire ropes; utilize folding auto-lock support frame realizing the position self-locking of the transfer device; the self-unlocking of the stretcher is realized by utilizing two stretcher lifting mechanisms; the driving mechanism and the driven driving mechanism drive the stretcher lifting mechanism to drive the stretcher to lift along the three sections of lifting rods through the steel wire rope respectively; the lifting limit of the stretcher is realized by utilizing the active driving mechanism. The stretcher can realize the functions of self-unlocking, lifting limiting and integral position self-locking of the transfer device and supporting leg folding, can enable the transfer device to pass through a narrow passageway and cross a transferred person bed in the transfer process, meets the requirements of the transfer device for multi-scene switching use, and improves the environment adaptability, stability, safety and reliability of the transfer device.

Description

A transport device

Technical Field

The invention belongs to the technical field of medical transfer machines, and in particular relates to a transfer device.

Background Art

Medical transfer machines not only involve the transfer of patients from beds to examination equipment, operating tables or rehabilitation equipment, but also affect the comfort, safety and treatment efficiency of patients. This demand is particularly urgent for elderly patients, critically ill patients and patients with limited mobility. The emergence of medical transfer machines meets this urgent demand and can better help medical staff easily complete the task of patient transfer.

In the prior art, a Chinese patent with publication number CN109009707A discloses a multifunctional medical lift with four degrees of freedom in space, which includes a body frame structure, a stretcher mechanism suspended on the body frame through a multi-link structure, and an electric push rod driving the stretcher mechanism to move up and down on the body frame structure; a control system and a display system are provided on the body frame structure; a tilt sensor is provided in the middle of the stretcher mechanism to provide a balance signal of the stretcher mechanism to the control system; a weighing sensor and a distance detection sensor are installed at the bottom of the stretcher mechanism to provide the control system with a support force obtained by the stretcher mechanism and a distance signal of the stretcher mechanism from an obstacle. The multifunctional medical transfer machine disclosed in the patent does not have a self-locking and unlocking mechanism designed for the stretcher mechanism in its structure, and its safety and reliability performance are relatively poor. At the same time, the multifunctional medical transfer machine uses a lifting electric push rod group to realize the rising and falling of the stretcher mechanism, and an electromagnetic locker is provided to limit the extreme position of the lifting electric push rod group. The lifting electric push rod group and the electromagnetic locker both rely on power to work and need to be connected to the power supply network at all times. When there is a power outage or the lifting electric push rod group and the electromagnetic locker are damaged, the multifunctional medical transfer machine will not be able to work normally, which reduces the environmental adaptability of the multifunctional medical transfer machine. Although the multifunctional medical transfer machine can achieve four-degree-of-freedom displacement in its structure, the overall balance of the multifunctional medical transfer machine is poor at the extreme position and it is prone to rollover.

Summary of the invention

The purpose of the present invention is to provide a transfer device to solve the problems existing in the prior art.

The technical solution adopted by the present invention to solve the technical problem is as follows:

A transfer device provided by the present invention mainly comprises: a folding self-locking support frame and a driven driving mechanism installed on the folding self-locking support frame, an active driving mechanism, a first stretcher lifting mechanism, a second stretcher lifting mechanism, a transmission shaft, a first three-section lifting rod, a second three-section lifting rod, a third three-section lifting rod, a fourth three-section lifting rod, a first stretcher, a second stretcher, a first steel wire rope and a second steel wire rope;

The folding self-locking support frame is used to realize the position self-locking and folding functions of the transfer device;

The driven drive mechanism is connected to the active drive mechanism via a transmission shaft, and the driven drive mechanism is driven by the active drive mechanism;

The driven driving mechanism is connected to the first stretcher lifting mechanism via a first steel wire rope, a first three-section lifting rod and a second three-section lifting rod;

The active driving mechanism is connected to the second stretcher lifting mechanism via a second steel wire rope, a third three-section lifting rod and a fourth three-section lifting rod;

The first stretcher lifting mechanism and the second stretcher lifting mechanism are connected via the first stretcher and the second stretcher; the first stretcher lifting mechanism and the second stretcher lifting mechanism are used to realize the self-locking and unlocking functions of the first stretcher and the second stretcher;

The active driving mechanism drives the second stretcher lifting mechanism through the second steel wire rope to drive one end of the first stretcher and the second stretcher to be lifted and lowered along the third three-section lifting rod and the fourth three-section lifting rod, and the driven driving mechanism drives the first stretcher lifting mechanism through the first steel wire rope under the drive of the active driving mechanism to drive the other end of the first stretcher and the second stretcher to be lifted and lowered along the first three-section lifting rod and the second three-section lifting rod;

The active driving mechanism is used to realize the lifting and limiting functions of the first stretcher and the second stretcher, and the driving source of the active driving mechanism is a battery.

Furthermore, the driven drive mechanism includes: a second connecting load-bearing bracket, a reducer fixing seat fixed on the second connecting load-bearing bracket, a first reducer fixed on the reducer fixing seat, a first transmission pulley installed on the first reducer output shaft, a first reducer coupling connected to the first reducer input shaft, a first transmission shaft support connected to the first reducer, and a first transmission shaft fixing block fixed on the first transmission shaft support; the upper end of the first steel wire rope is connected to the first transmission pulley; the transmission shaft is connected to the first reducer coupling after passing through the first transmission shaft fixing block.

Furthermore, the active drive mechanism includes: a first connecting load-bearing bracket, a battery fixed to the first connecting load-bearing bracket through a battery fixing bracket, a second reducer, a third reducer, a motor driver, an identifier support and a motor fixing bracket all installed on the first connecting load-bearing bracket, a motor installed on the motor fixing bracket, a second transmission wheel installed on the output shaft of the second reducer, a lifting and lowering transmission identification shaft connected to the output shaft of the second reducer, a second transmission shaft support and a second reducer coupling connected to the second reducer, a second transmission shaft fixing block fixed to the second transmission shaft support, a low point identification sensor and a high point identification sensor all installed on the identifier support; the battery is connected to the motor driver, the motor driver is connected to the motor, the motor is connected to the third reducer, the third reducer is connected to the second reducer through the third reducer coupling, the upper end of the second steel wire rope is connected to the second transmission wheel, and the transmission shaft is connected to the second reducer coupling after passing through the second transmission shaft fixing block.

Further, the battery supplies the electric energy required by the motor driver; the motor driver receives an external rising signal, and controls the motor to rotate forward according to the external rising signal, and drives the third reducer, the third reducer coupling, the second reducer, the second transmission wheel, the second reducer coupling, the transmission shaft, the first reducer coupling, the first reducer and the first transmission wheel to rotate clockwise through the motor, and the first transmission wheel is used to make the first steel wire rope be wound around the first transmission wheel, and the second transmission wheel is used to make the second steel wire rope be wound around the second transmission wheel, thereby controlling the first stretcher and the second stretcher to rise; the motor driver receives an external descending signal, and controls the motor to reverse according to the external descending signal, and drives the third reducer, the third reducer coupling, the second reducer, the second transmission wheel, the second reducer coupling, the transmission shaft, the first reducer coupling, the first reducer and the first transmission wheel to rotate counterclockwise through the motor, and the first transmission wheel is used to release the first steel wire rope, and the second transmission wheel is used to release the second steel wire rope, thereby controlling the first stretcher and the second stretcher to descend;

When the first stretcher and the second stretcher rise, the lifting and lowering transmission identification shaft rotates out from the second reducer. When the first stretcher and the second stretcher rise to the highest point, the high point identification sensor identifies the farthest point where the lifting and lowering transmission identification shaft rotates out, and then sends a stop signal back to the motor driver. The motor driver receives the stop signal and controls the motor to stop working, thereby stopping the first stretcher and the second stretcher from rising; when the first stretcher and the second stretcher descend, the lifting and lowering transmission identification shaft rotates back from the outside to the second reducer. When the first stretcher and the second stretcher descend to the lowest point, the low point identification sensor identifies the nearest point where the lifting and lowering transmission identification shaft rotates back, and then sends a stop signal back to the motor driver. The motor driver receives the stop signal and controls the motor to stop working, thereby stopping the first stretcher and the second stretcher from descending.

Furthermore, the folding self-locking support frame includes: a first supporting leg, a second supporting leg, a first supporting leg crossbeam connected to the first supporting leg and the second supporting leg at both ends, a second supporting long crossbeam connected to the upper end of the first supporting leg at the lower end of the bent part of the non-folding end, a first supporting long crossbeam connected to the upper end of the second supporting leg at the lower end of the bent part of the non-folding end, a third three-section lifting rod fixed bent rod and a first sliding lifting connecting rod connected to the non-folding end of the second supporting long crossbeam, a fourth three-section lifting rod fixed bent rod and a second sliding lifting connecting rod connected to the non-folding end of the first supporting long crossbeam, a first supporting side crossbeam connected to the non-folding end of the first supporting long crossbeam and the non-folding end of the second supporting long crossbeam at both ends, a first supporting short crossbeam, a second supporting short crossbeam, a first transmission shaft sleeve and a second transmission shaft sleeve connected by a four-way connector, the first supporting short crossbeam is connected to the middle of the first supporting long crossbeam, the second supporting short crossbeam is connected to the middle of the second supporting long crossbeam, and the second supporting side crossbeam connected to the folding end of the first supporting long crossbeam and the folding end of the second supporting long beam at both ends. A beam, a third sliding lifting connecting rod, a second connecting short rod and a second folding push-to-unlock handle connected to the folding end of the first supporting long crossbeam, a fourth sliding lifting connecting rod, a first connecting short rod and a first folding push-to-unlock handle connected to the folding end of the second supporting long crossbeam, a third supporting leg connected to the first folding push-to-unlock handle, a fourth supporting leg connected to the second folding push-to-unlock handle, a third supporting leg short rod and a third supporting leg bent rod connected to the third supporting leg, a fourth supporting leg short rod and a fourth supporting leg bent rod connected to the fourth supporting leg, a second supporting leg crossbeam connected to the third supporting leg short rod and the fourth supporting leg short rod at both ends respectively; a first three-section lifting rod fixing bent rod connected to the lower end of the bent part of the folding end of the second supporting long crossbeam through a sleeve connecting block, a second three-section lifting rod fixing bent rod connected to the lower end of the bent part of the folding end of the first supporting long crossbeam through a sleeve connecting block; the first folding push-to-unlock handle and the second folding push-to-unlock handle are used to realize the position self-locking function of the first supporting leg, the second supporting leg, the third supporting leg and the fourth supporting leg

Furthermore, the folding self-locking support frame also includes: a first universal brake caster, a second universal brake caster, a third universal brake caster and a fourth universal brake caster respectively installed on the lower ends of the first support leg, the second support leg, the third support leg and the fourth support leg.

Furthermore, the structural compositions of the first folding push-to-unlock handle and the second folding push-to-unlock handle are the same; the first folding push-to-unlock handle comprises: a handle fixing base connected to the end of the bent portion at the upper end of the third support leg, a rotating bearing installed at the front end of the handle fixing base, a limiting base installed at the lower end of the handle fixing base, a limiting groove provided at the rear end of the limiting base, a pressing handle installed in the handle fixing base, a pressing spring fixed at the rear end of the handle fixing base, the lower end of the pressing handle connected to the pressing spring, and the lower end of the pressing handle connected to the handle fixing base; the bent portion of the folded end of the second supporting long cross beam passes through the handle fixing base, the rotating bearing installed at the front end of the handle fixing base, the limiting base, the pressing spring, the pressing spring, and the pressing spring, respectively. The bearing and the limit base are fixed by a sleeve connecting block; the front end of the pressing handle is fixed in the limit groove of the limit base when it is not pressed. The pressing handle is pressed downward and the third supporting leg is rotated. The front end of the pressing handle is disengaged from the limit groove in the limit base by compressing the pressing spring, so that the entire first folding press-unlocking handle rotates around the curved part of the folding end of the second supporting long beam as the center, thereby realizing the folding function of the third supporting leg; conversely, the pressing handle is released, and the pressing spring restores its elastic deformation to insert the front end of the pressing handle into the limit groove in the limit base, thereby realizing the position self-locking of the third supporting leg and the quick door-entry and bed-crossing operation process.

Furthermore, the first stretcher lifting mechanism and the second stretcher lifting mechanism have the same structural composition; the first stretcher lifting mechanism comprises: a stretcher lifting mechanism base, a wire fixer fixed at the middle position of the stretcher lifting mechanism base, the lower end of the first wire rope is connected to the wire fixer, an outer stretcher slide rail fixed to the inner side of the stretcher lifting mechanism base, an inner stretcher slide rail installed on the inner side of the outer stretcher slide rail, outer sliding columns are respectively installed at the upper and lower ends between the inner stretcher slide rail and the outer stretcher slide rail, a stretcher sliding connector fixed to the end of the first stretcher, inner sliding columns are respectively installed at the upper and lower ends between the stretcher sliding connector and the inner stretcher slide rail, a stretcher locking column fixing seat fixed on the first stretcher, and a stretcher locking column fixing seat fixed on the stretcher. A stretcher latch post, an upper latch fixing plate fixed on a stretcher lifting mechanism base, a latch limit slot fixing plate connected to the upper latch fixing plate, a latch lower fixing plate connected to the latch limit slot fixing plate, a latch limit slot toggle plate connected to the latch upper fixing plate and the latch lower fixing plate via a rotating shaft, a latch limit slot formed between the latch limit slot fixing plate and the latch limit slot toggle plate, and a first stretcher latch installed on the latch limit slot toggle plate; the lower ends of the first three-section lifting rod and the second three-section lifting rod are both fixed on the stretcher lifting mechanism base; when the first stretcher lifting mechanism is in a locked state, the stretcher latch post is inserted into the latch limit slot, and when the first stretcher lifting mechanism is in an unlocked state, the stretcher latch post pops out of the latch limit slot.

Furthermore, when the first stretcher is pushed inward, the stretcher lock column is inserted into the lock limit groove through the joint action of the stretcher sliding connector, the inner sliding column, the inner stretcher slide rail, the outer sliding column and the outer stretcher slide rail, thereby locking the first stretcher; when the first stretcher lock is to be toggled to the left, the front end of the entire lock limit groove toggle plate is moved outward through the action of the rotating shaft, thereby shrinking the interior of the lock limit groove, and then causing the stretcher lock column to pop out of the lock limit groove, thereby causing the first stretcher to pop out under the joint action of the stretcher sliding connector, the inner sliding column, the inner stretcher slide rail, the outer sliding column and the outer stretcher slide rail, thereby unlocking the first stretcher.

Furthermore, the structural compositions of the first three-section lifting rod, the second three-section lifting rod, the third three-section lifting rod and the fourth three-section lifting rod are all the same; the first three-section lifting rod comprises: a first upper end fixing seat, an upper rod, a first sliding bearing, a second upper end fixing seat, a middle rod, a second sliding bearing, a sliding rod limiting rod, a lower rod and a lower end fixing seat; the first upper end fixing seat is fixed to the upper end of the upper rod, and the first upper end fixing seat is connected to the second connecting load-bearing bracket.

The beneficial effects of the present invention are:

1. Self-locking and unlocking functions of the stretcher: In the present invention, a first stretcher lifting mechanism and a second stretcher lifting mechanism with self-locking and unlocking functions are designed. The first stretcher lifting mechanism and the second stretcher lifting mechanism can realize mechanical self-locking and unlocking of the first stretcher and the second stretcher, thereby improving the overall safety and reliability of the transport device.

2. Lifting and limiting function of the stretcher: In the present invention, an active driving mechanism with a lifting and limiting function is designed, through which the lifting and limiting of the first stretcher and the second stretcher can be achieved, thereby improving the overall safety and reliability of the transport device.

3. The overall position self-locking function of the transfer device and the folding function of the supporting legs: In the present invention, a folding self-locking support frame with a position self-locking function is designed. The first folding push-to-unlock handle and the second folding push-to-unlock handle in the folding self-locking support frame can realize the self-locking function of the four supporting legs, thereby realizing the overall position self-locking function of the transfer device; at the same time, the first folding push-to-unlock handle and the second folding push-to-unlock handle in the folding self-locking support frame can also realize the folding function of the four supporting legs. This design allows the transfer device to pass through narrow aisles and cross over the bed of the person being transferred during the transfer process, thereby meeting the needs of switching the transfer device in multiple scenes.

4. Environmental adaptability: In the present invention, a storage battery is used to provide electric energy for the active driving mechanism, which eliminates the requirement that the existing active device needs to be connected to the power supply network at all times, and improves the environmental adaptability of the transfer device.

5. Structural reliability: In the present invention, a field-shaped connection structure is formed between the first supporting short cross beam, the second supporting short cross beam, the first transmission shaft sleeve and the second transmission shaft sleeve at the upper end of the folding self-locking support frame and the driven drive mechanism and the active drive mechanism on both sides, and the main loads such as the first stretcher lifting mechanism and the second stretcher lifting mechanism are distributed on both sides of the folding self-locking support frame. This structural design avoids the risk of the transfer device tipping over during movement, and further improves the overall stability and safety of the transfer device.

6. Mobility and convenience: In the present invention, by installing four universal brake casters at the lower end of the foldable self-locking support frame, it is convenient for users to push the transfer device, making the entire transfer process simpler and more labor-saving; at the same time, the use of universal brake casters can also make the transfer device move more stably and reliably during the process of switching between multiple scenes.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of a transfer device provided by the present invention;

FIG2 is a schematic diagram of the structure of a foldable self-locking support frame;

FIG3 is a schematic structural diagram of a first foldable push-to-unlock handle;

FIG4 is an exploded view of the first folding push-to-unlock handle;

FIG5 is a schematic diagram of the overall structure of a sliding lifting self-locking stretcher mechanism;

FIG6 is a schematic structural diagram of a driven driving mechanism;

FIG7 is a schematic structural diagram of an active drive mechanism;

FIG8 is an enlarged view of point E in FIG5 ;

FIG9 is a side view of the first stretcher lifting mechanism;

FIG10 is a schematic diagram of the first stretcher after it pops out of the first stretcher lifting mechanism;

11 is a schematic diagram of the connection relationship between the upper fixing plate of the latch, the middle fixing plate of the latch, the stopper groove of the latch, the lower fixing plate of the latch and the stopper groove of the latch;

12 is a schematic diagram of the connection relationship between the upper fixing plate of the latch, the middle fixing plate of the latch, the stopper groove of the latch, the lower fixing plate of the latch and the stopper groove of the latch;

FIG13 is an exploded view of the wire fixer;

FIG14 is a schematic diagram of the structure of the first three-stage lifting rod;

Figure 15 is a quick cross-bed operation process;

FIG. 16 is a schematic diagram of the overall structure of a transfer device provided by the present invention.

In the figure, a folding self-locking support frame 1, a first supporting long beam 101, a second supporting long beam 102, a plurality of three-way connectors 103, a plurality of four-way connectors 104, a first supporting short beam 105, a second supporting short beam 106, a first transmission shaft sleeve 107, a second transmission shaft sleeve 108, a first supporting side beam 109, a second supporting side beam 110, a first sliding lifting connecting rod 111, a second sliding lifting connecting rod 112, a third sliding lifting connecting rod 113, a fourth sliding lifting connecting rod 114, a first folding push-to-unlock handle 115, a handle fixing base 1151, a strip mounting hole 11511, a circular mounting hole 11512, a pressing handle 1152, a rotating bearing 1153, a limiting base 1154, a limiting groove 11541, and a fixing screw 11 55. Compression spring 1156. Second folding push-unlock handle 116. First connecting short rod 117. Second connecting short rod 118. First three-section lifting rod fixed bent rod 119. Second three-section lifting rod fixed bent rod 120. Third three-section lifting rod fixed bent rod 121. Fourth three-section lifting rod fixed bent rod 122. First support leg cross beam 123. Second support leg cross beam 124. Sleeve connecting block 125. First support leg 126. Second support leg 127. Third support leg 128. Fourth support leg 129. Third universal brake caster 130. Fourth universal brake caster 131. First universal brake caster 132. Second universal brake caster 133. Third support leg short rod 134. Third support leg bent rod 135. Fourth support leg short rod 136. Fourth support leg bent rod 137.

Sliding lifting self-locking stretcher mechanism 2, driven driving mechanism A, active driving mechanism B, first stretcher lifting mechanism C, second stretcher lifting mechanism D, first reducer 201, first transmission wheel 202, first reducer coupling 203, first transmission shaft support 204, first transmission shaft fixing block 205, reducer fixing seat 206, transmission shaft 207, second transmission shaft fixing block 208, second transmission shaft support 209, second reducer coupling 210, second reducer 211, second transmission wheel 212, lifting and lowering transmission identification axle 213, battery 214, battery fixing frame 215, motor 216, third reducer 217, motor driver 218, first three-stage lifting rod 219, first upper end fixing seat 2191, upper rod 2192, first sliding bearing 2193, second upper end fixing seat 2194, middle rod 2195, second sliding bearing 2196, sliding rod limit rod 2197, lower rod 2198, lower end fixing seat 2199, second three-stage lifting rod 220, third three-stage lifting rod 221, fourth three-stage lifting rod 222, low point identification Identification sensor 223, high point identification sensor 224, wire fixer 225, wire locking rod 2251, fixing nut 2252, fixing pin 2253, first fixed base 2254, second fixed base 2255, inner stretcher slide rail 226, first stretcher 227, second stretcher 228, first stretcher latch 229, inner sliding column 230, identifier support 231, first connecting load-bearing bracket 232, second connecting load-bearing bracket 233, third reducer coupling 234, motor fixing bracket 235, first wire rope 236, stretcher latch column 237, second steel wire rope 238, stretcher lifting mechanism base 239, outer sliding column 240, stretcher latch column fixing seat 241, outer stretcher slide rail 242, stretcher sliding connector 243, latch upper fixing plate 244, latch limit groove fixing plate 245, latch limit groove 246, latch lower fixing plate 247, latch limit groove toggle plate 248, mounting hole 2481, plane 2482, driven drive mechanism protective cover 249, active drive mechanism protective cover 250, stretcher lifting mechanism protective cover 251;

Bed 3.

DETAILED DESCRIPTION

As shown in FIGS. 1 to 16 , a transfer device provided by the present invention mainly comprises: a folding self-locking support frame 1 and a sliding lifting self-locking stretcher mechanism 2 ; the sliding lifting self-locking stretcher mechanism 2 is installed on the folding self-locking support frame 1 .

The folding self-locking support frame 1 of the present invention is made of aviation aluminum tube, which can reduce the overall weight of the transfer device. As shown in Figures 1 to 16, the folding self-locking support frame 1 of the present invention mainly includes: a first supporting long beam 101, a second supporting long beam 102, a plurality of three-way connectors 103, a plurality of four-way connectors 104, a first supporting short beam 105, a second supporting short beam 106, a first transmission shaft sleeve 107, a second transmission shaft sleeve 108, a first supporting side beam 109, a second supporting side beam 110, a first sliding lifting connecting rod 111, a second sliding lifting connecting rod 112, a third sliding lifting connecting rod 113, a fourth sliding lifting connecting rod 114, a first folding push-to-unlock handle 115, a second folding push-to-unlock handle 116, a first connecting short rod 117, The second connecting short rod 118, the first three-section lifting rod fixed bent rod 119, the second three-section lifting rod fixed bent rod 120, the third three-section lifting rod fixed bent rod 121, the fourth three-section lifting rod fixed bent rod 122, the first support leg cross beam 123, the second support leg cross beam 124, the sleeve connecting block 125, the first support leg 126, the second support leg 127, the third support leg 128, the fourth support leg 129, the third universal brake caster 130, the fourth universal brake caster 131, the first universal brake caster 132, the second universal brake caster 133, the third support leg short rod 134, the third support leg bent rod 135, the fourth support leg short rod 136 and the fourth support leg bent rod 137.

After the first supporting short beam 105, the second supporting short beam 106, the first transmission shaft sleeve 107, and the second transmission shaft sleeve 108 are connected through a four-way connector 104, the end of the first supporting short beam 105 is connected to the middle position of the first supporting long beam 101 through a three-way connector 103, and the end of the second supporting short beam 106 is connected to the middle position of the second supporting long beam 102 through a three-way connector 103.

The first supporting long cross beam 101 and the second supporting long cross beam 102 are both U-shaped structures.

The non-folding end of the first supporting long crossbeam 101, one end of the first supporting side crossbeam 109, and the upper end of the second sliding lifting connecting rod 112 are connected through a four-way connector 104; the non-folding end of the second supporting long crossbeam 102, the other end of the first supporting side crossbeam 109, and the upper end of the first sliding lifting connecting rod 111 are connected through a four-way connector 104. In addition, the curved portion of the non-folding end of the first supporting long crossbeam 101 is connected to the fourth three-section lifting rod fixed curved rod 122 through a sleeve connecting block 125, and the end of the fourth three-section lifting rod fixed curved rod 122 is equipped with a sleeve connecting block 125; the curved portion of the non-folding end of the second supporting long crossbeam 102 is connected to the third three-section lifting rod fixed curved rod 121 through a sleeve connecting block 125, and the end of the third three-section lifting rod fixed curved rod 121 is equipped with a sleeve connecting block 125. In addition, the bent portion of the non-folded end of the first supporting long beam 101 is connected to the upper end of the second supporting leg 127 through a three-way connector 103; the bent portion of the non-folded end of the second supporting long beam 102 is connected to the upper end of the first supporting leg 126 through a three-way connector 103.

The folded end of the first supporting long beam 101, one end of the second supporting side beam 110, and the upper end of the third sliding lifting connecting rod 113 are connected through a four-way connector 104; the folded end of the second supporting long beam 102, the other end of the second supporting side beam 110, and the upper end of the fourth sliding lifting connecting rod 114 are connected through a four-way connector 104. In addition, the curved portion of the folded end of the first supporting long beam 101 is respectively connected to the second folding push unlocking handle 116 and the second connecting short rod 118 through a sleeve connecting block 125, wherein the end of the second connecting short rod 118 is connected to the lower end of the third sliding lifting connecting rod 113 through a three-way connector 103; the lower end of the curved portion of the folded end of the first supporting long beam 101 is connected to the second three-section lifting rod fixed bent rod 120 through a sleeve connecting block 125, and a sleeve connecting block 125 is installed at the end of the second three-section lifting rod fixed bent rod 120; In addition, the bent portion of the folding end of the second supporting long horizontal beam 102 is respectively connected to the first folding push-to-unlock handle 115 and the first connecting short rod 117 through a sleeve connecting block 125, wherein the end of the first connecting short rod 117 is connected to the lower end of the fourth sliding lifting connecting rod 114 through a three-way connector 103; the lower end of the bent portion of the folding end of the second supporting long horizontal beam 102 is connected to the first three-section lifting rod fixed bent rod 119 through a sleeve connecting block 125, and a sleeve connecting block 125 is installed at the end of the first three-section lifting rod fixed bent rod 119.

The end of the upper bent portion of the third supporting leg 128 is connected to the first folding push-to-unlock handle 115, and a third supporting leg short rod 134 and a third supporting leg bent rod 135 are respectively connected in the middle of the third supporting leg 128 through two three-way connectors 103, and the third supporting leg short rod 134 is connected to the third supporting leg bent rod 135, and the end of the third supporting leg short rod 134 is connected to the lower end of the bent portion of the folding end of the second supporting long beam 102; the end of the upper bent portion of the fourth supporting leg 129 is connected to the second folding push-to-unlock handle 116, and a fourth supporting leg short rod 136 and a fourth supporting leg bent rod 137 are respectively connected in the middle of the fourth supporting leg 129 through two three-way connectors 103, and the fourth support leg short rod 136 is connected to the fourth support leg bent rod 137, and the end of the fourth support leg short rod 136 is connected to the lower end of the bent portion of the folding end of the first supporting long beam 101. The two ends of the second supporting leg cross beam 124 are connected to the third supporting leg short rod 134 and the fourth supporting leg short rod 136 respectively.

Among them, the first universal brake caster 132 is installed at the lower end of the first support leg 126, the second universal brake caster 133 is installed at the lower end of the second support leg 127, the third universal brake caster 130 is installed at the lower end of the third support leg 128, and the fourth universal brake caster 131 is installed at the lower end of the fourth support leg 129.

In the present invention, the first folding push-to-unlock handle 115 and the second folding push-to-unlock handle 116 have the same structure, composition, size, etc. Therefore, the structure of the first folding push-to-unlock handle 115 will be described below as an example.

As shown in Figures 1 to 16, the first folding push-to-unlock handle 115 mainly includes: a handle fixing base 1151, a pressing handle 1152, a rotating bearing 1153, a limiting base 1154, a fixing screw 1155 and a pressing spring 1156; a strip-shaped mounting hole 11511 is provided in the middle of the handle fixing base 1151, a circular mounting hole 11512 is provided at the front end of the handle fixing base 1151, and the rear end of the handle fixing base 1151 is a hollow tubular structure; the end of the curved portion at the upper end of the third supporting leg 128 is connected to the hollow tubular structure at the rear end of the handle fixing base 1151; the rotating bearing 1153 is installed in the circular mounting hole 11512 at the front end of the handle fixing base 1151, and the limiting base 1154 is installed at the lower end of the handle fixing base 1151, and a limiting groove 11512 is provided at the rear end of the limiting base 1154 1541; the bent portion of the folded end of the second supporting long crossbeam 102 passes through the circular mounting hole 11512 at the front end of the handle fixing base 1151, the center hole of the rotating bearing 1153 and the center hole of the limiting base 1154 in sequence and is fixed by a sleeve connecting block 125; the pressing handle 1152 is installed in the strip mounting hole 11511 in the middle of the handle fixing base 1151, and the middle position of the lower end of the pressing handle 1152 is connected to the pressing spring 1156, and the lower end of the pressing spring 1156 is fixed to the hollow tubular structure at the rear end of the handle fixing base 1151, and the lower end of the pressing handle 1152 is fixedly connected to the handle fixing base 1151 near the middle position by a fixing screw 1155, and at the same time, the front end of the pressing handle 1152 is fixed in the limiting groove 11541 of the limiting base 1154 when it is not pressed.

The working principle of the folding self-locking support frame 1 is described in combination with the structures of the first folding push-unlocking handle 115 and the second folding push-unlocking handle 116. Specifically:

By pressing the pressing handle 1152 downward and rotating the third supporting leg 128, the front end of the pressing handle 1152 is disengaged from the limiting groove 11541 in the limiting base 1154 by compressing the pressing spring 1156, so that the entire first folding press-unlocking handle 115 rotates around the curved portion of the folding end of the second supporting long beam 102, thereby realizing the folding function of the third supporting leg 128; conversely, the pressing handle 1152 is released, and the pressing spring 1156 restores its elastic deformation to insert the front end of the pressing handle 1152 into the limiting groove 11541 in the limiting base 1154, thereby realizing the position self-locking of the third supporting leg 128 and the rapid cross-bed operation process.

Similarly, the second folding push-to-unlock handle 116 can realize the position self-locking, folding and fast bed-crossing operation process of the fourth supporting leg 129 according to the above operation.

As shown in Figures 1 to 16, the sliding lifting self-locking stretcher mechanism 2 mainly includes: a driven driving mechanism A, an active driving mechanism B, a first stretcher lifting mechanism C, a second stretcher lifting mechanism D, a transmission shaft 207, a first three-section lifting rod 219, a second three-section lifting rod 220, a third three-section lifting rod 221, a fourth three-section lifting rod 222, a first stretcher 227, a second stretcher 228, a first steel wire rope 236 and a second steel wire rope 238. Among them, the driven driving mechanism A is connected to the first stretcher lifting mechanism C through the first steel wire rope 236, the first three-section lifting rod 219 and the second three-section lifting rod 220, the active driving mechanism B is connected to the second stretcher lifting mechanism D through the second steel wire rope 238, the third three-section lifting rod 221 and the fourth three-section lifting rod 222, and the first stretcher lifting mechanism C and the second stretcher lifting mechanism D are installed with the first stretcher 227 and the second stretcher 228. The first stretcher lifting mechanism C and the second stretcher lifting mechanism D can realize the self-locking and unlocking functions of the first stretcher 227 and the second stretcher 228. The transmission shaft 207 passes through the first transmission shaft sleeve 107 and the second transmission shaft sleeve 108 as a whole, and the driven driving mechanism A is connected to the active driving mechanism B through the transmission shaft 207, and the driven driving mechanism A is driven by the active driving mechanism B. Among them, the active driving mechanism B can drive the second stretcher lifting mechanism D through the second steel wire rope 238 to drive one end of the first stretcher 227 and the second stretcher 228 to be lifted and lowered along the third three-section lifting rod 221 and the fourth three-section lifting rod 222. The driven driving mechanism A, under the drive of the active driving mechanism B, drives the first stretcher lifting mechanism C through the first steel wire rope 236 to drive the other end of the first stretcher 227 and the second stretcher 228 to be lifted and lowered along the first three-section lifting rod 219 and the second three-section lifting rod 220; wherein, the active driving mechanism B can realize the lifting and lowering limit function of the first stretcher 227 and the second stretcher 228.

As shown in Figures 1 to 16, the sliding, lifting and self-locking stretcher mechanism 2 also includes: a driven drive mechanism protective cover 249, an active drive mechanism protective cover 250 and two stretcher lifting mechanism protective covers 251, wherein the driven drive mechanism protective cover 249 is installed on the driven drive mechanism A to play a protective and aesthetic role; the active drive mechanism protective cover 250 is installed on the active drive mechanism B to play a protective and aesthetic role; the two stretcher lifting mechanism protective covers 251 are respectively installed on the first stretcher lifting mechanism C and the second stretcher lifting mechanism D to play a protective and aesthetic role.

As shown in Figures 1 to 16, the driven drive mechanism A mainly includes: a first reducer 201, a first transmission wheel 202, a first reducer coupling 203, a first transmission shaft support 204, a first transmission shaft fixing block 205, a reducer fixing seat 206 and a second connecting load-bearing bracket 233; one end of the second connecting load-bearing bracket 233 is connected to the connecting end of the fourth sliding lifting connecting rod 114 and the first connecting short rod 117, and the other end of the second connecting load-bearing bracket 233 is connected to the connecting end of the third sliding lifting connecting rod 113 and the second connecting short rod 118; the reducer fixing seat 206 is fixed on the second Connected to the load-bearing bracket 233; the first reducer 201 is fixed on the reducer fixing seat 206; the first transmission wheel 202 is installed on the output shaft of the first reducer 201, and the upper end of the first steel wire rope 236 is connected and fixed to the first transmission wheel 202; one end of the first reducer coupling 203 is connected to the input shaft of the first reducer 201; the first transmission shaft support 204 is connected to the first reducer 201; the first transmission shaft fixing block 205 is fixed on the first transmission shaft support 204; one end of the transmission shaft 207 passes through the first transmission shaft fixing block 205 and is connected to the other end of the first reducer coupling 203.

As shown in Figures 1 to 16, the active drive mechanism B mainly includes: a second transmission shaft fixing block 208, a second transmission shaft support 209, a second reducer coupling 210, a second reducer 211, a second transmission wheel 212, a lifting and lowering transmission identification shaft 213, a battery 214, a battery fixing frame 215, a motor 216, a third reducer 217, a motor driver 218, a low point identification sensor 223, a high point identification sensor 224, an identifier support 231, a first connecting load-bearing bracket 232, and a third connection load-bearing bracket 233. The three-speed reducer coupling 234 and the motor fixing bracket 235; one end of the first connecting load-bearing bracket 232 is connected to the first sliding lifting connecting rod 111, and the other end of the first connecting load-bearing bracket 232 is connected to the second sliding lifting connecting rod 112; the battery 214 is fixed to the first connecting load-bearing bracket 232 through the battery fixing bracket 215; the second speed reducer 211, the third speed reducer 217, the motor driver 218 and the motor fixing bracket 235 are all installed on the first connecting load-bearing bracket 232, and the motor 216 is installed on the battery fixing bracket 215. The second transmission wheel disc 212 is mounted on the second reduction gear 211 output shaft, and the upper end of the second steel wire rope 238 is connected and fixed to the second transmission wheel disc 212; the lifting and lowering transmission identification shaft 213 is connected to the output shaft of the second reduction gear 211; the third reduction gear 217 is connected to the third reduction gear coupling 234; the second transmission wheel disc 212 is mounted on the output shaft of the second reduction gear 211, and the upper end of the second steel wire rope 238 is connected and fixed to the second transmission wheel disc 212; the lifting and lowering transmission identification shaft 213 is connected to the output shaft of the second reduction gear 211; The second transmission shaft support 209 is connected to the second reducer 211; the second transmission shaft fixing block 208 is fixed on the second transmission shaft support 209; one end of the second reducer coupling 210 is connected to the second reducer 211; the other end of the transmission shaft 207 passes through the second transmission shaft fixing block 208 and is connected to the other end of the second reducer coupling 210; wherein, the identifier support 231 is connected to the first connecting load-bearing bracket 232, and the low point identification sensor 223 and the high point identification sensor 224 are both installed on the identifier support 231.

The overall working principle of the driven drive mechanism A and the active drive mechanism B is:

The battery 214 supplies the electric energy required by the motor driver 218; the motor driver 218 receives the external rising signal, and controls the motor 216 to rotate forward according to the external rising signal, and drives the third reducer 217, the third reducer coupling 234, the second reducer 211, the second transmission wheel 212, the second reducer coupling 210, the transmission shaft 207, the first reducer coupling 203, the first reducer 201 and the first transmission wheel 202 to rotate clockwise through the motor 216, and the first transmission wheel 202 is used to make the first steel wire rope 236 wind around the first transmission wheel 202, and the second steel wire rope 238 is wound around the second transmission wheel 212 through the action of the second transmission wheel 212, thereby Control the first stretcher 227 and the second stretcher 228 to rise; similarly, the motor driver 218 receives an external descending signal, and controls the motor 216 to reverse according to the external descending signal, and drives the third reducer 217, the third reducer coupling 234, the second reducer 211, the second transmission wheel 212, the second reducer coupling 210, the transmission shaft 207, the first reducer coupling 203, the first reducer 201 and the first transmission wheel 202 to rotate counterclockwise through the motor 216, and the first transmission wheel 202 is used to release the first steel wire rope 236, and the second transmission wheel 212 is used to release the second steel wire rope 238, thereby controlling the first stretcher 227 and the second stretcher 228 to descend.

When the first stretcher 227 and the second stretcher 228 rise, the lifting and lowering transmission identification shaft 213 rotates out from the second reducer 211. When the first stretcher 227 and the second stretcher 228 rise to the highest point, the high point identification sensor 224 identifies the farthest point of the lifting and lowering transmission identification shaft 213, and then sends a stop signal back to the motor driver 218. The motor driver 218 receives the stop signal and controls the motor 216 to stop working, thereby stopping the first stretcher 227 and the second stretcher 228 from rising. Similarly, When the first stretcher 227 and the second stretcher 228 descend, the lifting and lowering transmission identification shaft 213 rotates back from the outside to the second reducer 211. When the first stretcher 227 and the second stretcher 228 descend to the lowest point, the low point identification sensor 223 identifies the nearest point to which the lifting and lowering transmission identification shaft 213 rotates back, and then sends a stop signal back to the motor driver 218. The motor driver 218 receives the stop signal and controls the motor 216 to stop working, thereby stopping the first stretcher 227 and the second stretcher 228 from descending.

In the present invention, the first stretcher lifting mechanism C and the second stretcher lifting mechanism D have the same structure, composition, size, etc. Therefore, the following only takes the first stretcher lifting mechanism C as an example to introduce its structure.

As shown in FIGS. 1 to 16 , the first stretcher lifting mechanism C mainly comprises: a wire fixer 225, an inner stretcher slide rail 226, a first stretcher latch 229, an inner sliding column 230, a stretcher latch column 237, a stretcher lifting mechanism base 239, an outer sliding column 240, a stretcher latch column fixing seat 241, an outer stretcher slide rail 242, a stretcher sliding connector 243, a latch upper fixing plate 244, a latch limit groove fixing plate 245, a latch limit groove 246, a latch lower fixing plate 247 and a latch limit groove toggle plate 248; wherein the lower ends of the first three-section lifting rod 219 and the second three-section lifting rod 220 are both fixed on the stretcher lifting mechanism base 239; the wire fixer 225 is fixed on the stretcher lifting mechanism base 239; 9 middle position; the wire fixer 225 is connected to the lower end of the first wire rope 236; the outer stretcher slide rail 242 is fixed to the inner side of the stretcher lifting mechanism base 239, the inner stretcher slide rail 226 is installed on the inner side of the outer stretcher slide rail 242, and the upper and lower ends between the inner stretcher slide rail 226 and the outer stretcher slide rail 242 are respectively installed with outer sliding columns 240; the stretcher sliding connector 243 is fixed to the end of the first stretcher 227; the upper and lower ends between the stretcher sliding connector 243 and the inner stretcher slide rail 226 are respectively connected by the inner sliding column 230; the stretcher collision locking column fixing seat 241 is fixed on the first stretcher 227, the stretcher collision locking column 237 is fixed on the stretcher collision locking column fixing seat 241, and the side wall of the stretcher collision locking column 237 is provided with a plane. One side of the upper fixing plate 244 of the latch, the fixing plate 245 of the latch limiting groove, and one side of the lower fixing plate 247 of the latch are connected in sequence from top to bottom, and the upper fixing plate 244 of the latch, the fixing plate 245 of the latch limiting groove, and the lower fixing plate 247 of the latch are fixed on the base 239 of the stretcher lifting mechanism as a whole; the other side of the upper fixing plate 244 of the latch, the toggle plate 248 of the latch limiting groove, and the other side of the lower fixing plate 247 of the latch are connected in sequence from top to bottom through a rotating shaft; one side of the fixing plate 245 of the latch limiting groove is provided with an arc groove, and ... An arc groove is also provided on one side of the slot toggle plate 248, so that the arc groove on the latch limit slot fixing plate 245 and the arc groove on the latch limit slot toggle plate 248 jointly form a latch limit slot 246; the latch limit slot toggle plate 248 is provided with a mounting hole 2481 for mounting the first stretcher latch 229, and the first stretcher latch 229 is mounted on the latch limit slot toggle plate 248 through the mounting hole 2481; a plane 2482 is provided on the outer wall of the arc groove on the latch limit slot toggle plate 248. When the first stretcher lifting mechanism C is in the locked state, the stretcher latch column 237 is inserted into the latch limit slot 246, and when the first stretcher lifting mechanism C is in the unlocked state, the stretcher latch column 237 pops out of the latch limit slot 246.

The specific working principle of the first stretcher lifting mechanism C is:

When the first stretcher 227 is pushed inward, the stretcher latch post 237 is inserted into the latch limit groove 246 by the joint action of the stretcher sliding connector 243, the inner sliding post 230, the inner stretcher slide rail 226, the outer sliding post 240 and the outer stretcher slide rail 242, thereby locking the first stretcher 227. At this time, the plane on the side wall of the stretcher latch post 237 contacts the plane 2482 on the latch limit groove toggle plate 248; as shown in FIGS. 1 to 16, when the first stretcher latch 229 is toggled to the left, the front end of the entire latch limit groove toggle plate 248 moves outward (rightward) by the action of the rotating shaft, thereby locking the latch limit groove 246. At the same time, through the interaction between the plane 2482 on the latch limit slot toggle plate 248 and the plane on the side wall of the stretcher latch column 237, the arc groove on the latch limit slot toggle plate 248 pushes the stretcher latch column 237 toward the outside of the latch limit slot 246, so that the inside of the latch limit slot 246 is reduced, and then the stretcher latch column 237 pops out of the latch limit slot 246, so that the first stretcher 227 pops out under the joint action of the stretcher sliding connector 243, the inner sliding column 230, the inner stretcher slide rail 226, the outer sliding column 240, and the outer stretcher slide rail 242, thereby unlocking the first stretcher 227. Among them, the second stretcher lifting mechanism D has the same working principle as the first stretcher lifting mechanism C, that is, the locking and unlocking method of the second stretcher 228 is the same as that of the first stretcher 227.

As shown in FIGS. 1 to 16 , the wire fixer 225 mainly includes: a wire locking rod 2251, a fixing nut 2252, a fixing pin 2253, a first fixing base 2254 and a second fixing base 2255; the lower end of the first wire rope 236 is fixed to the wire locking rod 2251 in the wire fixer 225 by a top screw; the lower end of the wire locking rod 2251 is threadedly connected to the fixing pin 2253 by a fixing nut 2252; the front ends of the first fixing base 2254 and the second fixing base 2255 are both provided with limiting grooves, and the first fixing base 2254 and the second fixing base 2255 are buckled on the fixing pin 2253, that is, the fixing pin 2253 is stuck into the limiting grooves of the first fixing base 2254 and the second fixing base 2255, and then the first fixing base 2254 and the second fixing base 2255 are fastened with bolts, and the lower ends of the first fixing base 2254 and the second fixing base 2255 are both fixed on the stretcher lifting mechanism base 239.

In the present invention, the first three-stage lifting rod 219, the second three-stage lifting rod 220, the third three-stage lifting rod 221, and the fourth three-stage lifting rod 222 have the same structure and size. Therefore, the first three-stage lifting rod 219 is used as an example to introduce its structure.

As shown in FIGS. 1 to 16 , the first three-section lifting rod 219 mainly comprises: a first upper end fixing seat 2191, an upper rod 2192, a first sliding bearing 2193, a second upper end fixing seat 2194, a middle rod 2195, a second sliding bearing 2196, a sliding rod limiting rod 2197, a lower rod 2198 and a lower end fixing seat 2199; the lower end fixing seat 2199 is fixed on the stretcher lifting mechanism base 239 in the first stretcher lifting mechanism C; the lower end of the lower rod 2198 is fixed on the lower end fixing seat 2199; the second sliding bearing 219 6 is sleeved on the upper end of the lower rod 2198; the lower end of the sliding rod limiting rod 2197 is connected to the upper end of the lower rod 2198, and the upper end of the sliding rod limiting rod 2197 is connected to the lower end of the middle rod 2195; the first sliding bearing 2193 is sleeved on the upper end of the middle rod 2195, the lower end of the second upper end fixing seat 2194 is connected to the upper end of the middle rod 2195, and the upper end of the second upper end fixing seat 2194 is connected to the lower end of the upper rod 2192; the first upper end fixing seat 2191 is fixed to the upper end of the upper rod 2192, and the first upper end fixing seat 2191 is connected to the second connecting load-bearing bracket 233. Among them, the lower rod 2198 with the second sliding bearing 2196 and the sliding rod limiting rod 2197 are inserted into the middle rod 2195, and then the middle rod 2195 with the first sliding bearing 2193 and the second upper end fixing seat 2194 are inserted into the upper rod 2192.

In the present invention, the first three-section lifting rod 219 , the second three-section lifting rod 220 , the third three-section lifting rod 221 and the fourth three-section lifting rod 222 are all retractable lifting structures, which can provide guidance for the lifting function of the first stretcher 227 and the second stretcher 228 .

A transfer device of the present invention can realize fast cross-bed operation. Specifically: before crossing the bed, first operate the driven drive mechanism A and the active drive mechanism B to raise the first stretcher 227 and the second stretcher 228 to the specified height, and then operate the first stretcher lifting mechanism C and the second stretcher lifting mechanism D to make the first stretcher 227 and the second stretcher 228 in the unlocked state, that is, the first stretcher 227 and the second stretcher 228 both pop out of the latch limit groove 246, at this time, the folding self-locking support frame 1 should be in the folding and self-locking state; when it is necessary to cross the bed, first press the pressing handle 1152 downward and rotate the third support leg 128 and the fourth support leg 129 so that the third support leg 128 and the fourth support leg 129 are both opened outward 90 degrees, and the user pushes the entire device forward to make the device cross the bed 3. When the first stretcher 227 and the second stretcher 228 are located directly above the bed 3, first operate the driven drive mechanism A and the active drive mechanism B to make the first stretcher 227 and the second stretcher 228 The second stretcher 228 is lowered to a specified height, and then the patient on the hospital bed 3 is lifted. At this time, the first stretcher lifting mechanism C and the second stretcher lifting mechanism D are first operated to put the first stretcher 227 and the second stretcher 228 in a locked state, that is, the first stretcher 227 and the second stretcher 228 are both stuck in the latch limit groove 246, and then the patient is placed on the first stretcher 227 and the second stretcher 228. Finally, the driven drive mechanism A and the active drive mechanism B are operated to raise the first stretcher 227 and the second stretcher 228 to a specified height, and the folding self-locking support frame 1 is in an unlocked state through the first folding push-unlocking handle 115 and the second folding push-unlocking handle 116. At this time, the device can be pushed to realize cross-bed operation. When the device is completely pushed out of the hospital bed 3, the folding self-locking support frame 1 can be in a folded and self-locking state through the first folding push-unlocking handle 115 and the second folding push-unlocking handle 116.

In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the figures, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection content of the present invention.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (8)

1. A transfer device, comprising: the folding self-locking support frame comprises a driven driving mechanism, a driving mechanism, a first stretcher lifting mechanism, a second stretcher lifting mechanism, a transmission shaft, a first third section lifting rod, a second third section lifting rod, a third section lifting rod, a fourth third section lifting rod, a first stretcher, a second stretcher, a first steel wire rope and a second steel wire rope which are arranged on the folding self-locking support frame;

the folding self-locking support frame is utilized to realize the functions of position self-locking and folding of the transfer device;

the driven driving mechanism is connected with the driving mechanism through a transmission shaft, and is driven by the driving mechanism;

the driven driving mechanism is connected with the first stretcher lifting mechanism through a first steel wire rope, a first three-section lifting rod and a second three-section lifting rod;

the active driving mechanism is connected with the second stretcher lifting mechanism through a second steel wire rope, a third lifting rod and a fourth lifting rod;

The first stretcher lifting mechanism is connected with the second stretcher lifting mechanism through a first stretcher and a second stretcher; the self-locking and unlocking functions of the first stretcher and the second stretcher are realized by utilizing the first stretcher lifting mechanism and the second stretcher lifting mechanism;

The driving mechanism drives the second stretcher lifting mechanism through the second steel wire rope to drive one ends of the first stretcher and the second stretcher to lift along the third section lifting rod and the fourth section lifting rod, and the driven driving mechanism drives the first stretcher lifting mechanism through the first steel wire rope to drive the other ends of the first stretcher and the second stretcher to lift along the first section lifting rod and the second section lifting rod under the driving of the driving mechanism;

the lifting limiting function of the first stretcher and the second stretcher is realized by utilizing the active driving mechanism, and a driving source of the active driving mechanism is a storage battery;

The first stretcher lifting mechanism and the second stretcher lifting mechanism have the same structure; the first stretcher elevating mechanism includes: the lifting mechanism comprises a stretcher lifting mechanism base, a steel wire fixer fixed at the middle position of the stretcher lifting mechanism base, an outer stretcher slide rail fixed at the inner side of the stretcher lifting mechanism base, an inner stretcher slide rail arranged at the inner side of the outer stretcher slide rail, an outer sliding column respectively arranged at the upper end and the lower end between the inner stretcher slide rail and the outer stretcher slide rail, a stretcher sliding connector fixed at the end part of the first stretcher, an inner sliding column respectively arranged at the upper end and the lower end between the stretcher sliding connector and the inner stretcher slide rail, a stretcher latch column fixing seat fixed on the first stretcher, a stretcher latch column fixed on the stretcher latch column fixing seat, a latch upper fixing plate fixed on the stretcher lifting mechanism base, a latch limit slot fixing plate connected with the latch upper fixing plate, a latch limit slot fixing plate connected with the latch limit slot fixing plate, a latch limit slot toggle plate connected with the latch upper fixing plate and the latch lower fixing plate through a rotating shaft, and a latch limit slot formed between the latch limit slot fixing plate and the latch limit toggle plate and a latch limit slot arranged on the latch upper plate; the lower ends of the first three-section lifting rod and the second three-section lifting rod are fixed on the base of the stretcher lifting mechanism; when the first stretcher lifting mechanism is in a locking state, the stretcher latch column is clamped into the latch limiting groove, and when the first stretcher lifting mechanism is in an unlocking state, the stretcher latch column pops out of the latch limiting groove;

When the first stretcher is pushed inwards, the stretcher latch lock column is clamped into the latch lock limit groove under the combined action of the stretcher sliding connector, the inner sliding column, the inner stretcher sliding rail, the outer sliding column and the outer stretcher sliding rail, so that the first stretcher is locked; when the first stretcher latch is shifted leftwards, the front end of the plate is shifted outwards through the whole latch limiting groove under the action of the rotating shaft, so that the inside of the latch limiting groove is reduced, and then the stretcher latch column pops up the latch limiting groove, so that the first stretcher pops up under the combined action of the stretcher sliding connector, the inner sliding column, the inner stretcher sliding rail, the outer sliding column and the outer stretcher sliding rail, and the unlocking of the first stretcher is realized.

2. A transfer device according to claim 1, wherein the driven drive mechanism comprises: the device comprises a second connecting bearing bracket, a speed reducer fixing seat fixed on the second connecting bearing bracket, a first speed reducer fixed on the speed reducer fixing seat, a first transmission wheel disc arranged on an output shaft of the first speed reducer, a first speed reducer coupler connected with an input shaft of the first speed reducer, a first transmission shaft support connected with the first speed reducer, and a first transmission shaft fixing block fixed on the first transmission shaft support; the upper end of the first steel wire rope is connected with a first transmission wheel disc; the transmission shaft penetrates through the first transmission shaft fixing block and then is connected with the first speed reducer coupler.

3. A transfer device according to claim 2, wherein the active drive mechanism comprises: a first connection bearing bracket, a storage battery fixed on the first connection bearing bracket through a battery fixing frame, a second speed reducer, a third speed reducer, a motor driver, a recognizer support and a motor fixing bracket which are all arranged on the first connection bearing bracket, a motor arranged on the motor fixing bracket, a second transmission wheel disc arranged on an output shaft of the second speed reducer, the lifting and descending transmission identification shaft is connected with the output shaft of the second speed reducer, the second transmission shaft support and the second speed reducer coupler are connected with the second speed reducer, and the second transmission shaft fixing block is fixed on the second transmission shaft support and is respectively provided with a low-point identification sensor and a high-point identification sensor on the identifier support; the storage battery is connected with the motor driver, the motor driver is connected with the motor, the motor is connected with the third speed reducer, the third speed reducer is connected with the second speed reducer through the third speed reducer coupler, the upper end of the second steel wire rope is connected with the second transmission wheel disc, and the transmission shaft is connected with the second speed reducer coupler after passing through the second transmission shaft fixing block.

4. A transfer device according to claim 3, wherein the battery supplies the motor drive with electrical energy; the motor driver receives an external ascending signal and controls the motor to rotate positively according to the external ascending signal, the motor drives the third speed reducer, the third speed reducer coupler, the second speed reducer, the second transmission wheel disc, the second speed reducer coupler, the transmission shaft, the first speed reducer coupler, the first speed reducer and the first transmission wheel disc to rotate clockwise, the first steel wire rope is wound on the first transmission wheel disc under the action of the first transmission wheel disc, and the second steel wire rope is wound on the second transmission wheel disc under the action of the second transmission wheel disc, so that the first stretcher and the second stretcher are controlled to ascend; the motor driver receives an external descending signal and controls the motor to rotate reversely according to the external descending signal, the motor drives the third speed reducer, the third speed reducer coupler, the second speed reducer, the second transmission wheel disc, the second speed reducer coupler, the transmission shaft, the first speed reducer coupler, the first speed reducer and the first transmission wheel disc to rotate anticlockwise, the first steel wire rope is released under the action of the first transmission wheel disc, the second steel wire rope is released under the action of the second transmission wheel disc, and the first stretcher and the second stretcher are controlled to descend;

when the first stretcher and the second stretcher ascend, the lifting and descending transmission identification shaft is rotated out of the second speed reducer, and when the first stretcher and the second stretcher ascend to the highest point, the high point identification sensor identifies the farthest point from which the lifting and descending transmission identification shaft rotates, and further, a stop signal is transmitted back to the motor driver, and the motor driver receives the stop signal and controls the motor to stop working, so that the first stretcher and the second stretcher stop ascending; when the first stretcher and the second stretcher descend, the lifting and descending transmission identification shaft is turned back into the second speed reducer from the outside, when the first stretcher and the second stretcher descend to the lowest point, the low point identification sensor identifies the nearest point of turning back of the lifting and descending transmission identification shaft, and then a stop signal is returned to the motor driver, and the motor driver receives the stop signal and controls the motor to stop working, so that the first stretcher and the second stretcher stop descending.

5. A transfer device according to claim 1, wherein the folding self-locking support comprises: the first support leg, the second support leg, the first support leg crossbeam that both ends link to each other with first support leg and second support leg respectively, the second support long crossbeam that the bending part lower extreme of non-folding end links to each other with first support leg upper end, the first support long crossbeam that the bending part lower extreme of non-folding end links to each other with second support leg upper end, the fixed bent rod of third section lifter and the first slip lift connecting rod that link to each other with the non-folding end of second support long crossbeam, the fixed bent rod of fourth section lifter and the second slip lift connecting rod that link to each other with the non-folding end of first support long crossbeam, the first support side crossbeam that both ends link to each other with the non-folding end of first support long crossbeam and the non-folding end of second support long crossbeam respectively, the first support short crossbeam that links to each other through a four-way connector, the second support short crossbeam, first drive shaft sleeve and second drive shaft sleeve, the first support short beam is connected with the middle of the first support long beam, the second support short beam is connected with the middle of the second support long beam, two ends of the second support side beams are respectively connected with the folding end of the first support long beam and the folding end of the second support long beam, a third sliding lifting connecting rod, a second connecting short rod and a second folding pressing unlocking handle which are connected with the folding end of the first support long beam, a fourth sliding lifting connecting rod, a first connecting short rod and a first folding pressing unlocking handle which are connected with the folding end of the second support long beam, a third supporting leg connected with the first folding pressing unlocking handle, a fourth supporting leg short rod and a third supporting leg bending rod which are connected with the third supporting leg, a fourth supporting leg short rod and a fourth supporting leg bending rod which are connected with the fourth supporting leg, the two ends of the second supporting leg cross beam are respectively connected with the third supporting leg short rod and the fourth supporting leg short rod; the first three-section lifting rod fixing bent rod is connected with the lower end part of the bending part of the folding end of the second support long beam through a sleeve connecting block, and the second three-section lifting rod fixing bent rod is connected with the lower end part of the bending part of the folding end of the first support long beam through a sleeve connecting block; and the first folding pressing unlocking handle and the second folding pressing unlocking handle are utilized to realize the position self-locking function of the first supporting leg, the second supporting leg, the third supporting leg and the fourth supporting leg.

6. The transfer device of claim 5, wherein the folding self-locking support further comprises: the first universal brake castor, the second universal brake castor, the third universal brake castor and the fourth universal brake castor are respectively arranged at the lower ends of the first supporting leg, the second supporting leg, the third supporting leg and the fourth supporting leg.

7. The transfer device of claim 5, wherein the first fold-over press unlocking handle and the second fold-over press unlocking handle are identical in structural composition; the first folding pressing unlocking handle includes: the handle fixing base is connected with the end part of the bending part at the upper end of the third supporting leg, the rotating bearing is arranged at the front end of the handle fixing base, the limiting base is arranged at the lower end of the handle fixing base, the rear end of the limiting base is provided with a limiting groove, the pressing handle is arranged in the handle fixing base, the pressing spring is fixed at the rear end of the handle fixing base, the lower end of the pressing handle is connected with the pressing spring, and the lower end of the pressing handle is connected with the handle fixing base; the bending part of the folding end of the second support long beam sequentially passes through the handle fixing base, the rotating bearing and the limiting base and then is fixed through a sleeve connecting block; the front end of the pressing handle is clamped in a limiting groove of the limiting base when not pressed, the pressing handle is pressed downwards and the third supporting leg is rotated, the front end of the pressing handle is separated from the limiting groove in the limiting base through the compression pressing spring, and therefore the whole first folding pressing unlocking handle rotates around the bending part of the folding end of the second supporting long cross beam, and the folding function of the third supporting leg is achieved; otherwise, the pressing handle is loosened, the pressing spring returns to elastically deform, so that the front end of the pressing handle is inserted into the limiting groove in the limiting base, and the position self-locking and rapid door-moving cross-bed operation flow of the third supporting leg is realized.

8. The transfer device of claim 1, wherein the first three-section lifter, the second three-section lifter, the third three-section lifter, and the fourth three-section lifter all have the same structural composition; the first three-section lifting rod comprises: the device comprises a first upper end fixing seat, an upper rod, a first sliding bearing, a second upper end fixing seat, a middle rod, a second sliding bearing, a sliding rod limiting rod, a lower rod and a lower end fixing seat; the first upper end fixing seat is fixed at the upper end of the upper rod and is connected with the second connecting bearing bracket.