CN113456375B - Bed and sickbed using same - Google Patents

Abstract

The invention relates to a bed and a hospital bed using the bed. The bedding includes a bed board, a mattress is laid on the bed board, a left guardrail and a right guardrail are respectively arranged on the left and right sides of the bed board, a bed end guardrail is arranged at the rear of the bed board, a pitching mechanism is arranged under the bed board, and an electric drive is installed on one of the left and right guardrails. The lifting device, the other is equipped with an electromagnetic lock that is located above the mattress and is flush with the top surface of the mattress. The lifting device is supported and connected with a crawling device for telescopic crawling on the top surface of the mattress and an electric drive connected to the left side. pulley mechanism. The invention realizes electric pitching, which can assist the patient to sit and lie down, and the function can be activated by pressing the button on the handle without the assistance of others; The movement of turning over for the patient achieves the purpose of being comfortable and not invading the sitting and lying space, and has the technical effect of improving the comfort of the postoperative patient and making it easier for the patient to turn over alone.

Description

Beds and beds in which they are used

technical field

The invention belongs to the technical field of rehabilitation equipment, and in particular relates to a bed and a sick bed using the bed.

Background technique

At present, the sick beds used by postoperative patients in hospitals, rehabilitation institutions and at home are mainly composed of bed frame 101, bedside guardrail 102, bedside guardrail 103, side guardrail 104, supporting legs 105, bed board 106 and The pitching mechanism 107 is formed, and the pitching mechanism 107 can adjust a bed board near the head of the bed to do a pitching motion, so as to assist the patient to keep a sitting posture with the help of others, or to adjust to a supine state. For postoperative patients, although they have not lost their behavioral capacity, due to physical weakness and carrying pipelines, etc., the patient's family members and nurses are required to assist them to sit up and turn over on the bed, which increases the workload of the patient's family members and nurses to a certain extent. , resulting in a waste of medical resources. In existing medical institutions and rehabilitation institutions, in order to help family members, medical staff, etc. to assist patients to turn over, cloth belts as shown in Figure 3 are usually used. and the lower cloth belt 202 tied on the end of the bed; wherein, the upper cloth belt 201 is always located between the patient and the mattress, so in order to improve the comfort of wearing, a silk cloth belt is often used; the lower cloth belt 202 is often temporarily tied The two ends of the cloth strips tied at the end of the bed are bound to the support at the end of the bed, and the middle part hangs freely on the quilt for the patient to grasp. But, though above-mentioned bedding can play to a certain degree help to family members and medical personnel, still can't be used alone for the patient. For general postoperative patients, although they have the problem of physical weakness, they have not lost consciousness and basic behavioral ability, but lack of energy.

The prior patent CN110269781B provides a kind of rehabilitation exercise air mattress, which is composed of an arm movement device, a leg movement device, a bed body, a massage device and a control box, and the arm movement device, leg movement device and massage device are respectively arranged on the bed body At the upper end, the control box is arranged at the lower end of the bed body. The hinge between the bed board and the bed frame can be adjusted according to the needs of the patient's own body position. The scale board can be more intuitive to see the inclination of the bed board; the arm movement device can exercise the arm to swing back and forth or stretch up and down, and the leg massage device can Exercise the patient's knee flexion and ankle movement, and the massage device can massage the patient's back, buttocks, and legs to prevent muscle atrophy or varicose arteries. However, in this patent, the bed will occupy a large amount of space on the hospital bed for the patient to lie on, causing the postoperative recovery of the patient's psychology and body to be hindered.

The prior patent TW1690314B discloses a sick bed turning device, which includes two movable guards, each of which is installed on opposite sides of a bed. The movable guard has a base and a bed rail assembly 1. A rolling shaft assembly and two bed frame clamps. The scrolling shaft assembly can be combined with a backing paper and the backing paper can be rolled by two motors to easily turn a patient over. The bed frame clamp can be set on any bed frame, The bed rail assembly can be turned over to facilitate moving the patient on and off the bed, the movable protective frame can be disassembled and combined, and the movable protective frame can be placed in a containing device, thereby achieving the labor-saving effect of the convenient bed turning device , Easy to set up and easy to carry. However, in this patent, it is necessary to roll the bed sheet to realize the rollover of the patient, which is inconsistent with the regulations in conventional medical care work-in the medical care specification, the patient needs to be moved to the left or right before turning over, so It will increase the patient's discomfort and prolong the patient's recovery period; at the same time, the bed sheet folding method adapted to the turning device is inconsistent with the conventional folding method, which will lead to changes in the rules of the entire medical system, which is not conducive to product promotion.

Therefore, according to actual work visits and research, it is found that in medical institutions and rehabilitation institutions, there is an urgent need for a bed that does not increase the discomfort of postoperative patients and can realize the above-mentioned patented functions, so as to assist patients to achieve single-person sleep. Lie down and roll over.

Contents of the invention

The purpose of the present invention is to provide a bed, to improve the comfort of postoperative patients and make it easier for patients to turn over alone.

The technical scheme of this bed tool is as follows:

The bed includes a bed board, a mattress is laid on the bed board, a left guardrail and a right guardrail are respectively arranged on the left and right sides of the bed board, a bed end guardrail is arranged at the rear of the bed board, and a pitching mechanism is provided under the bed board, wherein:

One of the left guardrail and the right guardrail is equipped with an electric-driven lifting device, and the other is equipped with an electromagnetic lock that is located above the mattress and is flush with the top surface of the mattress. The crawling crawling device and the electrically driven pulley mechanism connected to the left side, the pulley mechanism and the crawling device move left and right synchronously, and the crawling device is provided with a lock hole that cooperates with the electromagnetic lock;

The guardrail at the end of the bed is fixed with a pitching motor for driving the pitching mechanism, a telescopic rod positioned at the guardrail at the end of the bed and telescopic, a handle connected to the front end of the telescopic rod, and a control device connected to the rear end of the telescopic rod. The electric control part of the lifting device, the electric control part of the lifting device, the electric control part of the crawling device and the electric control part of the electromagnetic lock. The control device is used to execute the following instructions:

Under the control of the wireless command of the wristband, control the telescopic rod to stretch back and forth; and

After the control switch on the handle is triggered, the pitch motor, lifting device, crawling device and electromagnetic lock are controlled to start or close.

Alternatively, the lifting device is located in the left guardrail, and the lifting device includes a vertical ball screw installed vertically and rotatably installed in the left guardrail. The lower end of the vertical ball screw is connected with a lifting motor connected to the control device. The screw transmission on the ball screw is connected with a lifting base that is guided up and down and installed in the left guardrail, and the crawling device is connected on the lifting base.

Alternatively, the right guardrail is provided with a locking channel adjacent to the top surface of the quilt, and the electromagnetic lock is installed on the upper side of the inner wall and/or the lower side of the inner wall of the locking channel. The control device is connected with an electromagnetic push rod, and the output end of the electromagnetic push rod is connected with a lock tongue protruding from the inner wall of the locking passage and cooperating with the lock hole socket.

Alternatively, the lifting base is provided with a guiding passage through the left and right sides, and the crawling device includes a crawling trolley that is drawn and installed in the guiding passage along the left and right directions. The locking mechanism is unlocked when the crawling trolley moves to the right. The crawling trolley rotates on the left side and is equipped with a driven pulley. The driven pulley is driven and connected with a driving belt that goes around the steering pulley at the bottom left of the bed and is connected under the bed. The belt on the pulley, the driving pulley is connected with a pulley motor for driving the driving pulley to rotate and connected with the control device, the driving pulley and the pulley motor are supported on the driven bracket, and the driven bracket is connected with a A push-pull device that pushes and pulls the driven bracket left and right.

Alternatively, the push-pull device includes two pulleys arranged on the left and right sides of the bed board and a transmission rope connected around them. One side of the transmission rope is connected to the driven bracket, and the other side is connected to the driving bracket. The bracket is connected with a lead screw mechanism that moves left and right and is electrically driven.

Alternatively, the driven bracket, the transmission rope, the driving bracket and the lead screw mechanism are arranged sequentially from bottom to top, and the lead screw mechanism is located inside the bed board.

Alternatively, part or all of the crawling trolley is made of iron-based magnetic material, and the screw mechanism includes a crawling motor located on the left side of the bed board and connected to the control device and a horizontal ball screw extending left and right connected to the right end, and the horizontal ball screw screw drive The left and right linear guides are connected to the translation base connected in the bed board, the lower side of the translation base is connected with the active bracket, and the upper side of the translation base is provided with an electromagnet connected with the control device.

Alternatively, the right end of the horizontal ball screw and the right pulley are located below the right end of the locking channel in the right rail.

Alternatively, a photoelectric switch is installed on the lifting device.

Another object of the present invention is to provide a kind of sick bed that adopts above-mentioned bed tool, and its technical scheme is as follows:

The hospital bed includes a bed frame and the bed set on it. The bed set includes a bed board, a mattress is laid on the bed board, a left guardrail and a right guardrail are respectively arranged on the left and right sides of the bed board, a bed end guardrail is arranged at the rear of the bed board, and a pitching mechanism is provided under the bed board. ,in:

One of the left guardrail and the right guardrail is equipped with an electric-driven lifting device, and the other is equipped with an electromagnetic lock that is located above the mattress and is flush with the top surface of the mattress. The crawling crawling device and the electrically driven pulley mechanism connected to the left side, the pulley mechanism and the crawling device move left and right synchronously, and the crawling device is provided with a lock hole that cooperates with the electromagnetic lock;

The guardrail at the end of the bed is fixed with a pitching motor for driving the pitching mechanism, a telescopic rod positioned at the guardrail at the end of the bed and telescopic, a handle connected to the front end of the telescopic rod, and a control device connected to the rear end of the telescopic rod. The electric control part of the lifting device, the electric control part of the lifting device, the electric control part of the crawling device and the electric control part of the electromagnetic lock. The control device is used to execute the following instructions:

Under the control of the wireless command of the wristband, control the telescopic rod to stretch back and forth; and

After the control switch on the handle is triggered, the pitch motor, lifting device, crawling device and electromagnetic lock are controlled to start or close.

Alternatively, the lifting device is located in the left guardrail, and the lifting device includes a vertical ball screw installed vertically and rotatably installed in the left guardrail. The lower end of the vertical ball screw is connected with a lifting motor connected to the control device. The screw transmission on the ball screw is connected with a lifting base that is guided up and down and installed in the left guardrail, and the crawling device is connected on the lifting base.

Alternatively, the right guardrail is provided with a locking channel adjacent to the top surface of the quilt, and the electromagnetic lock is installed on the upper side of the inner wall and/or the lower side of the inner wall of the locking channel. The control device is connected with an electromagnetic push rod, and the output end of the electromagnetic push rod is connected with a lock tongue protruding from the inner wall of the locking passage and cooperating with the lock hole socket.

Alternatively, the lifting base is provided with a guiding passage through the left and right sides, and the crawling device includes a crawling trolley that is drawn and installed in the guiding passage along the left and right directions. The locking mechanism is unlocked when the crawling trolley moves to the right. The crawling trolley rotates on the left side and is equipped with a driven pulley. The driven pulley is driven and connected with a driving belt that goes around the steering pulley at the bottom left of the bed and is connected under the bed. The belt on the pulley, the driving pulley is connected with a pulley motor for driving the driving pulley to rotate and connected with the control device, the driving pulley and the pulley motor are supported on the driven bracket, and the driven bracket is connected with a A push-pull device that pushes and pulls the driven bracket left and right.

Alternatively, the push-pull device includes two pulleys arranged on the left and right sides of the bed board and a transmission rope connected around them. One side of the transmission rope is connected to the driven bracket, and the other side is connected to the driving bracket. The bracket is connected with a lead screw mechanism that moves left and right and is electrically driven.

Alternatively, the driven bracket, the transmission rope, the driving bracket and the lead screw mechanism are arranged sequentially from bottom to top, and the lead screw mechanism is located inside the bed board.

Alternatively, part or all of the crawling trolley is made of iron-based magnetic material, and the screw mechanism includes a crawling motor located on the left side of the bed board and connected to the control device and a horizontal ball screw extending left and right connected to the right end, and the horizontal ball screw screw drive The left and right linear guides are connected to the translation base connected in the bed board, the lower side of the translation base is connected with the active bracket, and the upper side of the translation base is provided with an electromagnet connected with the control device.

Alternatively, the right end of the horizontal ball screw and the right pulley are located below the right end of the locking channel in the right rail.

Alternatively, a photoelectric switch is installed on the lifting device.

Beneficial effects of the present invention:

The present invention changes the driving mode of the existing hand-operated pitching mechanism into an electric one to realize electric pitching, which can assist the patient to sit and lie down, and can be started by pressing the button on the handle without the assistance of others. function; at the same time, under the action of the crawling device that can be lifted, the movement of the accompanying staff to manually turn over the patient is simulated, so as to achieve the purpose of comfort and not occupying the sitting and lying space. The technical effect of being convenient for the patient to stand up alone.

Description of drawings

Fig. 1 is the schematic diagram of sick bed in the prior art;

Fig. 2 is a schematic diagram of a hospital bed in another perspective in the prior art;

Fig. 3 is the schematic diagram of bed in the prior art;

Fig. 4 is the schematic diagram of sickbed among the present invention;

Fig. 5 is the schematic diagram of bed among the present invention;

Fig. 6 is the enlarged view of place A in Fig. 5;

Fig. 7 is a top view of the crawling car in Fig. 5 .

Detailed ways

Referring to Fig. 4 to Fig. 7, the hospital bed in this embodiment still adopts the bed frame 301 of the conventional hospital bed, and the main difference between it and the prior art lies in the bedding.

The bed still retains the bed board 302 and the quilt 303 laid above it, the left guardrail 304 and the right guardrail 305 arranged on the left and right sides, the bed end guardrail 306 arranged at the rear, and the pitching mechanism 307 arranged below, and added auxiliary control and exercise The three functional modules of the patient's grip-sensing body position changing auxiliary device for arm strength, the pitch control device for assisting the patient in sitting and lying down, and the turning device for assisting the patient in rolling over will be explained one by one in conjunction with Figures 4 to 7 below.

The grip sensor type body position change auxiliary device includes a telescopic rod 308 that is fixed on the bedside guardrail 306 and stretches forward and backward. to the left or right of the . This requirement mainly considers the patient's handedness, for example, the right hand is set on the right side, and the left handed is set on the left side. The front end of the telescopic rod 308 is connected with a handle 310, and the rear end is connected with a control device 309 fixed on the rear side of the bed guardrail. A pressure sensor, smart chip and LED lights are placed in the grip 310, the pressure sensors are respectively embedded in the grip 310, soft rubber is used for the handshake, the smart chip is placed in the control device 309, and the led lights can be divided into three levels according to the patient's grip strength, with red, yellow and green lights express. The smart chip connects the pressure sensor and the LED lights (red, yellow, green) to receive the pressure signals from the left and right pressure sensors, evaluate the left and right hands of the patient through the pressure signals, and light up the corresponding signal lights according to the patient's grip sensory evaluation, and then give appropriate treatment. The pulling force assists the patient to get up slowly. On the one hand, it can provide a reference for postoperative arm strength exercise, on the other hand, it can facilitate the patient's position change on the bed, and can also reduce the workload of the patient's family members and nurses. The smart chip built in the control device 309 uses a wireless protocol to input and output control signals. On the input interface, it is connected to the smart bracelet worn by the patient, so that the patient can input data to the smart chip through inertial control, touch control, etc. When receiving a signal, the smart chip can start the telescopic rod 308; at the same time, on the output interface, the smart chip can control the pitch control device 309 and the turning device to execute related instructions.

Pitching control device 309 is on the basis of existing pitching mechanism 307, has installed electric drive pitching motor 311 additionally, and this pitching motor 311 is positioned at the downside of bed tail, and pitching motor 311 is also controlled to be electrically connected on the control device 309. When the smart chip receives corresponding input from the smart bracelet and/or the handle 310, the pitch motor 311 drives the pitch mechanism 307 to adjust the patient's push-up.

A single turning device can be set, but preferably, multiple sets can be set according to the nurse's focus when turning the patient, such as setting one on the patient's cervical spine, lumbar spine, knees, ankles, etc., to facilitate the patient's turning action . The turning device is mainly divided into a left part associated with the left guardrail 304 and a right part associated with the right guardrail 305 . in:

The right part includes an electromagnetic lock 312 installed on the right guardrail 305, and the right guardrail 305 is provided with a locking channel 313 adjacent to the top surface of the mattress 303, and the electromagnetic lock 312 is installed on the inner wall of the locking channel 313 On the upper side, the electromagnetic lock 312 includes an electromagnetic push rod that stretches up and down and is connected to the control device 309. The output end of the electromagnetic push rod is connected with a plug for protruding from the inner wall of the locking channel 313 and mating with the lock hole 334. deadbolt.

The left part includes a lifting device installed on the left guardrail 304. The lifting device is supported and connected with a crawling device for stretching and crawling on the top surface of the mattress 303 and an electrically driven pulley mechanism connected to the left side. The pulley mechanism and The crawling device moves left and right synchronously, and the crawling device is provided with a lock hole matched with the electromagnetic lock 312 . The lifting device includes a vertical ball screw 314 that is vertically arranged and rotatably installed in the left guardrail 304. The lower end of the vertical ball screw 314 is connected with a lifting motor 315 that is connected with the control device 309. The screw transmission is connected with a lifting base 316 which is guided up and down in a straight line and is installed in the left guardrail 304 , and the crawling device is connected on the lifting base 316 . The lifting base 316 is provided with a left and right through guide channel 317 and a photoelectric switch 318 located below the guide channel 317. The crawling device includes a crawling trolley 319 that is pulled and installed in the guide channel 317 along the left and right directions. The locking mechanism that the crawling trolley 319 escapes from the left side of the guide channel and is unlocked when the crawling trolley 319 moves to the right. The crawling trolley 319 rotates to the left and is equipped with a driven pulley 320, which is driven and connected with a winding warp Bed board 302 bottom left place turns to pulley 322 behind, is connected to the belt 321 on the driving pulley 323 below bed board 302, and driving pulley 323 is connected with the pulley motor that is used to drive driving pulley 323 to rotate and is connected with control device 309, The driving pulley 323 and the pulley motor are supported on the driven bracket 325, and the driven bracket 325 is connected with a push-pull device for pushing and pulling the driven bracket 325 left and right. The push-pull device includes two pulleys 326 arranged on the left and right sides of the bed board 302 and a transmission rope 327 connected around them. One side of the transmission rope 327 is connected to the driven bracket 325, and the other side is connected to the driving bracket 328. , the active bracket 328 is connected with a lead screw mechanism that moves left and right and is electrically driven. The driven bracket 325 , the transmission rope 327 , the driving bracket 328 and the lead screw mechanism are arranged sequentially from bottom to top, and the lead screw mechanism is located in the bed board 302 . The screw mechanism includes a crawler motor 329 located on the left side of the bed board 302 and connected to the control device 309 and a horizontal ball screw 330 extending left and right connected to the right end. Inside the translation base 331 , the lower side of the translation base 331 is connected with the active bracket 328 , and the upper side of the translation base 331 is provided with an electromagnetic guide magnet connected with the control device 309 . The right end of the horizontal ball screw 330 and the right pulley are located below the right end of the locking channel 313 in the right guardrail 305 .

Preferably, the crawling trolley 319 includes a body 332 made of cast iron, on which two groups of wheels 333 are rotatably connected at intervals, and the lock holes 334 are located between the two groups of wheels 333, and the wheels 333 are all drum-shaped, mainly composed of The wheel body part located at both ends, the conical wheel shaft part and the necking part that is rotatably connected to the car body 332 are composed of the whole wheel 333 made of engineering plastics; The wheel frame 335, the right side of the wheel frame 335 and the left side of the car body 332 are arc-shaped concave-convex cooperation, specifically, the right side of the wheel frame 335 is provided with an arc-shaped groove, and the left side of the car body 332 is provided with an arc-shaped groove. The end portion; Driven belt pulley rotation is connected on wheel carrier 335 left sides.

As preferably, the right side of the lifting base 316 is provided with a receiving groove 345 for the car body 332 of the crawling trolley 319. The wall is provided with a permanent magnet type or an electromagnetic type housing magnet 336 connected with the control device 309 .

As preferably, the lifting base 316 is also provided with an avoidance passage 324 located on the left side of the guide passage 317 and communicating with it. The avoidance passage 324 is provided with a guide pulley 337 below the left port of the guide passage 317. The guide pulley 337 There are multiple guide pulleys 337 distributed at intervals from top to bottom. The upper and lower guide pulleys 337 are located on the right side of the multiple guide pulleys 337 in the middle, and the multiple guide pulleys 337 in the middle are flush with each other. A guide pulley 338 located behind the guide passage 317 and rotatably connected to the lifting base 316 is also provided in the escape channel, and the guide pulley 338 is flush with the top of the driven pulley 320 . The locking mechanism is located on the upper side of the left port of the guide channel 317. The locking mechanism includes a lever 344 that is connected to the lifting base 316 around the axis extending forward and backward. , the right side of the upper section is also provided with a stop block 340 that prevents the upper section from continuing to swing to the right; superior. The lower side of the lifting base 316 is also connected with a tensioning vertical bar 341 that is located on the left side and extends downwards. Wheel 342, the fixed pulley 343 between the tensioning vertical bar 341 and the vertical screw rod is installed between the lifting base 316 and the steering pulley 322, and the fixed pulley 343 is rotated and installed in the left guardrail 304, and is placed in the bed. 303 below the top side.

When the bed is in use, under the control of the wireless command of the wristband, the smart chip controls the telescopic rod 308 to stretch back and forth; after the patient grasps the handle 310, the smart chip controls the pitch motor 311 by triggering the control switch on the handle 310 , lifting device, crawling device and electromagnetic lock 312 start or close. Especially when needing to turn over, first start the lifting motor 315, so that the lifting base 316 descends until the photoelectric switch 318 is blocked by the mattress 303 and triggers; The frame 335 retreats a little to the left first, the car body 332 and the wheel frame 335 are docked together, then the active bracket 328 stops to the left and the car body 332 is caught by the guide magnet; then under the action of the horizontal ball screw 330, the base is translated 331 drives the pulley mechanism and the crawling trolley crawls to the right together above the mattress 303 until the crawling trolley 319 enters the locking passage 313; then closes the crawling motor 329, starts the electromagnetic lock 312, and the crawling trolley 319 is locked on the right guardrail 305; Then start the pulley motor, so that the belt 321 rotates counterclockwise, and apply an auxiliary force for translation to the left until the translation is in place; Assist the patient to turn to the right.

The above is only a description of the preferred examples of the application of the present invention, but it should not be construed as a limitation on the claims. The structure of the present invention can have other changes and is not limited to the above structure. In a word, all the various changes made within the protection scope of the independent claims of the present invention are within the protection scope of the invention.

Claims (5)

1. The bed comprises a bed board, a mattress is laid on the bed board, a left guardrail and a right guardrail are respectively arranged at the left and the right of the bed board, a bed tail guardrail is arranged at the rear of the bed board, a pitching mechanism is arranged below the bed board, and the bed is characterized in that,

one of the left guardrail and the right guardrail is provided with an electrically driven lifting device, the other guardrail is provided with an electromagnetic lock catch which is positioned above the mattress and is flush with the top surface of the mattress, the lifting device is in bearing connection with a crawling device for telescopically crawling on the top surface of the mattress and an electrically driven belt wheel mechanism connected to the left side of the crawling device, the belt wheel mechanism and the crawling device synchronously move left and right, and the crawling device is provided with a lock hole matched with the electromagnetic lock catch;

the tailstock guardrail is fixed with and is used for the drive pitching machine of every single move mechanism, be located tailstock guardrail and flexible telescopic link around and, connect at the handle of telescopic link front end and connect the controlling means at the telescopic link rear end, controlling means connects pitching machine, the automatically controlled part of telescopic link, elevating gear's automatically controlled part, the automatically controlled part of the device of crawling and the automatically controlled part of electromagnetism hasp, controlling means is used for carrying out following instruction:

under the control of a wireless instruction of the bracelet, the telescopic rod is controlled to stretch back and forth; and

after the control switch on the handle is triggered, the pitching motor, the lifting device, the crawling device and the electromagnetic lock catch are controlled to be started or closed;

the lifting device is positioned in the left guardrail and comprises a vertical ball screw which is vertically arranged and rotatably installed in the left guardrail, the lower end of the vertical ball screw is in transmission connection with a lifting motor connected with the control device, the vertical ball screw is in screw transmission connection with a lifting base which is installed in the left guardrail in a vertically straight line guiding manner, and the crawling device is connected to the lifting base;

the lifting base is provided with a left-right through guide channel, the crawling device comprises a crawling trolley which is installed in the guide channel in a left-right drawing mode, a locking mechanism which prevents the crawling trolley from coming off from the left side of the guide channel and is unlocked when the crawling trolley moves rightwards is arranged in the guide channel, a driven belt wheel is rotatably installed on the left side of the crawling trolley, a belt which is wound around a steering belt wheel at the left lower part of the bed board and is connected onto a driving belt wheel below the bed board is in transmission connection with the driven belt wheel, the driving belt wheel is connected with a belt wheel motor which is used for driving the driving belt wheel to rotate and is connected with a control device, the driving belt wheel and the belt wheel motor are supported on a driven bracket, and the driven bracket is connected with a push-pull device which is used for pushing and pulling the driven bracket leftwards and rightwards;

the push-pull device comprises two pulleys arranged on the left side and the right side of the bed plate and a transmission rope which is connected with the pulleys in a surrounding manner, one side of the transmission rope is connected with the driven bracket, the other side of the transmission rope is connected with a driving bracket, and the driving bracket is connected with a screw rod mechanism which moves left and right and is electrically driven;

the driven bracket, the transmission rope, the driving bracket and the screw rod mechanism are sequentially arranged from bottom to top, and the screw rod mechanism is positioned in the bed plate;

the part or all of the crawling trolley is made of iron-based magnetic materials, the screw mechanism comprises a crawling motor which is located on the left side of the bed plate and connected with the control device and a horizontal ball screw which extends leftwards and rightwards and is connected with the right end of the crawling motor, the horizontal ball screw is in screw transmission connection with a translation base which is connected into the bed plate in a left-right linear guide moving mode, the lower side of the translation base is connected with a driving bracket, and an electromagnet connected with the control device is arranged on the upper side of the translation base.

2. The bedding of claim 1, wherein a locking channel is arranged on the right guardrail and is adjacent to the upper part of the top surface of the mattress, the electromagnetic lock catch is arranged on the upper side and/or the lower side of the inner wall of the locking channel, the electromagnetic lock catch comprises an electromagnetic push rod which stretches up and down and is connected with a control device, and the output end of the electromagnetic push rod is connected with a lock tongue which is used for extending out of the inner wall of the locking channel and is matched with the lock hole plug bush.

3. The bedding set forth in claim 1 wherein the right end of the horizontal ball screw and the right side pulley are located in the right guardrail below the right end of the locking channel.

4. A bed accessory as claimed in any one of claims 1 to 3, in which a photoelectric switch is mounted on the lifting means.

5. Hospital bed comprising a bedframe, characterized in that the bedframe is provided with a bed according to any of the claims 1-4.

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