CN211301819U

CN211301819U - Life-saving device

Info

Publication number: CN211301819U
Application number: CN201921957419.0U
Authority: CN
Inventors: 陈伟晓
Original assignee: Guangdong Huakun Technology Development Co ltd
Current assignee: Guangdong Huakun Technology Development Co ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-08-21
Anticipated expiration: 2029-11-13

Abstract

The utility model provides a lifesaving device, which comprises a rope guider, a rope winding shaft, a handheld controller A, a handheld controller B, a clutch, a rope, a shell, a belt, braces, a bracket and pulleys; the casing is installed waistband, braces and pulley to be connected with handheld controller A and handheld controller B, the casing is installed in support and mounting panel, mounting panel and support mounting rope arranger, rope winding shaft, install multiple braking unit in the rope winding shaft, by controller handheld controller A and handheld controller B control rate of descent, multiple braking unit includes: the speed limiting brake device comprises a first brake unit, a second brake unit and a speed limiting brake unit. The escape landing is ensured to be safer; the rope arranging device enables the rope winding shaft to arrange the ropes regularly, and the ropes can be recycled and used for multiple times after being used.

Description

Life-saving device

Technical Field

The utility model relates to a riser field especially relates to a lifesaving ware.

Background

The modern society develops at a high speed. In recent years, high-rise buildings are more common, and high buildings in large cities are erected. The safety problems of many high-rise buildings gradually emerge while people enjoy entertainment and life in the economic era with highly developed technologies.

In addition, at present, in high mountain exploration and high-rise operation, devices such as ropes, safety belts, rope clamping descenders and the like are mainly adopted. In the original product, the rope is very dangerous if the rope touches water and oil or the equipment fails as long as the operation is careless and unskilled in the landing control. The existing product for high-rise escape adopts a rope buffer, the speed cannot be controlled independently in the descending process, obstacles cannot be avoided in a complex environment, the high-rise escape cannot be stopped in the air independently, and the rope is easy to block.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a lifesaving device can realize functions such as high altitude safety descending, half empty stop work.

The technical scheme of the utility model is realized like this:

a lifesaving device comprises a main shaft, a clutch and a rope winding shaft; two ends of the main shaft are fixed, and the clutch is sleeved on the main shaft; the rope winding shaft is provided with a rope, the rope winding shaft is of an axial hollow structure, the clutch is arranged inside the rope winding shaft, and the clutch is connected with the rope winding shaft through a one-way rotating structure. The selectable clutch is connected with the rope winding shaft through a one-way bearing.

As a further alternative of the life saving device, the clutch further comprises a drum brake part, a first brake unit is arranged on the drum brake part, the first brake unit is in a brake state in an initial state, and the first brake unit is adjusted by the descending speed control unit to adjust the braking force of the drum brake part so as to adjust the releasing speed of the rope.

As a further alternative of the life saving device, the first brake unit comprises two arc-shaped drum brake sheets arranged in the drum brake part, one end of each of the two drum brake sheets is hinged, an expansion and contraction piece is arranged between the unconnected ends of the two drum brake sheets, and a first brake arm is connected to the expansion and contraction piece through a brake shaft; the brake shaft drives the expansion and contraction piece to rotate by rotating the first brake arm, so that the distance between the unconnected ends of the two drum brake pieces is expanded or reduced; the descending speed control unit comprises a first spring, a first clutch rope and a first control handle, the first clutch rope is respectively connected with the first brake arm and the first control handle, and the first clutch rope is driven by the first control handle to pull the first brake arm to rotate; the first spring urges the brake arm to return.

As a further alternative of the life saving device, the clutch further comprises a disc brake part, and the disc brake part is provided with a speed-limiting brake unit; the speed-limiting braking unit provides initial braking force for the clutch and limits the speed of the rope winding shaft for releasing the rope; the speed-limiting braking unit comprises a speed-limiting base body, a disc braking sheet A and a disc braking sheet B; the speed-limiting base body comprises a lock shaft which is sleeved on the main shaft, a disc brake part of the clutch is sleeved on the lock shaft, a disc brake piece A and a disc brake piece B are arranged on the lock shaft and positioned on two sides of the disc brake part, and the disc brake piece A and the disc brake piece B are respectively in surface contact with the disc brake part; the disc brake sheet B is provided with a ratchet part, and the ratchet part is provided with corresponding ratchets; when the ratchet is buckled with the ratchet wheel part, the lock shaft and the main shaft are relatively fixed, and the speed-limiting braking unit brakes the clutch; when the ratchet is separated from the ratchet part, the lock shaft and the main shaft can rotate relatively, and the clutch drives the lock shaft to rotate when rotating.

As a further alternative of the life saving device, the disc brake B forms a circumferentially fixed but axially movable connection with the lock shaft; a threaded column extends out of the lock shaft, an adjusting pressing block is connected to the threaded column in a threaded mode and abuts against the disc brake piece B, and the position of the adjusting pressing block on the threaded column is adjusted, so that the braking force of the disc brake piece B on the disc brake part is adjusted; the adjusting press block is controlled by a speed-limiting adjuster, the speed-limiting adjuster comprises an adjusting gear, an adjusting rod, an adjusting spring and an adjusting knob, the adjusting gear and the adjusting knob are respectively arranged at two ends of the adjusting rod, and the adjusting spring is arranged on the adjusting rod; the adjusting pressing block is provided with an outer gear ring; when the adjusting knob is pressed down, the adjusting gear is meshed with an outer gear ring on the adjusting press block, and the adjusting knob is rotated to drive the adjusting press block to rotate; after the adjusting knob is loosened, the adjusting spring enables the adjusting gear to reset and separate from the outer gear ring on the adjusting pressing block; the dish stop piece A with lock axle threaded connection, the lock is epaxial the one end that the dish stopped piece A place is equipped with the lock dish, the dish stop piece A orientation the one side of lock dish is equipped with the round pin, be equipped with the arc wall on the lock dish, the round pin is located in the arc wall, still be equipped with the arc spring in the arc wall, the one end of arc spring with the tip of arc wall offsets, the other end with the round pin offsets.

As a further alternative of the life saving device, the ratchet is controlled by a speed-limiting control unit, the speed-limiting control unit comprises a control arm, a pull rope, a first speed-limiting spring and a control button, one end of the control arm is connected with the ratchet, the other end of the control arm is connected with the pull rope, and the pull rope is connected with the control button; in an initial state, the ratchet is buckled with the ratchet part, the control arm is rotated by adjusting the control button, and the first speed limiting spring urges the control arm to reset; the speed-limiting control unit also comprises a second speed-limiting spring, and the second speed-limiting spring drives the control button to reset; the first brake arm is provided with a first buckle tooth, and the control arm is provided with a second buckle tooth; after the control button is pressed down, the control arm rotates, the second buckling teeth are buckled with the first buckling teeth, and the ratchet is still buckled with the ratchet wheel part at the moment; through adjusting the first control handle, the first brake arm is rotated to drive the control arm to rotate, so that the ratchet is separated from the ratchet part.

As a further alternative of the life saving device, the life saving device further comprises a second brake unit, the second brake unit acts on the rope winding shaft, the second brake unit is in a non-braking state in an initial state, and the magnitude of the braking force of the second brake unit on the rope winding shaft is adjusted through an emergency control unit.

Conduct life saving appliance's further alternative still includes the rope arranger, the rope arranger includes reciprocal lead screw, slider and constant head tank, reciprocal lead screw with the wiring shaft drive is connected, and it is equipped with two thread grooves that the pitch is the same, revolve to opposite thread groove, the thread groove both ends with the transition department of reciprocal lead screw body forms the wedge, be equipped with in the slider with slider articulated shifting block, the shifting block with one of them thread groove of reciprocal lead screw is connected, realizes the slider is in reciprocating motion on the reciprocal lead screw, the slider still with a parallel to the constant head tank sliding connection of reciprocal lead screw is in order to prevent the slider rotation, the one end of rope passes behind the slider with the wiring hub connection realizes this life saving appliance at the automatic rope arranging of descending in-process.

As a further alternative of the life saving device, the life saving device further comprises a rope retracting unit, wherein the rope retracting unit comprises a crank handle, a transmission gear ring and a driving gear; the transmission gear ring is indirectly or directly arranged on the rope winding shaft, the driving gear is meshed with the transmission gear ring, and the hand crank is detachably connected with the driving gear; the driving gear is rotated through the hand crank, so that the transmission gear ring is driven to rotate around the rope shaft, and the rope is recovered.

As a further alternative of the lifesaving device, the lifesaving device comprises a frame, wherein two mounting plates are arranged on the frame, and two ends of the main shaft are fixed on the two mounting plates; the frame is covered with a shell.

The beneficial effects of the utility model are that: the clutch and the main shaft are skillfully designed inside the rope winding shaft, so that the whole volume is simplified, and the escape device is easy to store.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the life saving device of the present invention;

fig. 2 is a schematic structural view of the life saving device in another angle;

fig. 3 is a schematic structural view of the life saving device of the present invention after the shell is hidden;

FIG. 4 is a schematic view of the cord of FIG. 3 further hidden;

FIG. 5 is a schematic cross-sectional view of the roping axle and its internal construction;

FIG. 6 is a cut-away perspective view of the clutch;

FIG. 7 is a schematic structural view of the first brake unit and the clutch;

FIG. 8 is an exploded view of the speed limiting brake unit;

FIG. 9 is a sectional plan view of the assembly of the speed limiting brake unit and the clutch;

FIG. 10 is a schematic structural view of the speed limit control unit and the descent speed control unit;

FIG. 11 is a schematic structural diagram of a handheld controller A;

FIG. 12 is a schematic view of the rope guider and the rope tightener;

fig. 13 is a schematic view of an application scene of the life saving device of the present invention;

fig. 14 is a schematic view of another application scenario of the life saving device of the present invention;

FIG. 15 is a schematic view of the engagement of the drive ring gear with the drive gear;

fig. 16 is a bottom schematic view of the drive gear.

In the figure: 1. a frame; 10. loading a tape box; 11. mounting a plate; 12. a housing; 121. a roller; 13. shoulder straps; 14. a waistband; 15. a leg strap; 18. a hand-held controller B; 19. a handheld controller A; 2. a rope winding shaft; 21. a rope; 22. a fastener; 23. a rope guider; 231. a reciprocating screw; 232. a slider; 233. shifting blocks; 24; a rope tensioner; 241. a movable pulley; 242. a fixed pulley; 243. a micro-motor; 244. a buffer spring; 3. a main shaft; 4. a transmission gear ring; 41. a drive gear; 5. a one-way bearing; 6. a clutch; 62. a drum brake part; 63. a disc brake section; 7. a first brake unit; 71. a drum brake sheet; 72. a telescopic member; 73. a brake shaft; 74. a first brake arm; 751. a first spring; 752. a first clutch cord; 753. a first control handle; 8. a second brake unit; 9. a speed-limiting braking unit; 90. a rate-limiting substrate; 91. a lock shaft; 92. a lock disc; 921. an arc-shaped slot; 922. an arc-shaped spring; 93. a threaded post; 94. a disc brake sheet A; 941. a pin; 95. a disc brake sheet B; 951. a ratchet portion; 96. a ratchet; 971. a control arm; 972. pulling a rope; 973. a first speed limiting spring; 974. A control button; 975. a second speed limiting spring; 98. adjusting a pressing block; 99. a speed limit regulator; 991. adjusting a knob; 992. adjusting a rod; 993. adjusting the spring; 994. an adjusting gear; 100. a hand crank; 200. a descending-assisting frame; 210. a slide rail; 220. preventing feet from sliding; 300. and (7) hanging holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "engaging", "connecting", "fixing", and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-5, there is shown a life saving device comprising a main shaft 3, a rope winding shaft 2 and a clutch 6; two ends of the main shaft 3 are fixed, and the clutch 6 is sleeved on the main shaft 3; the rope winding shaft 2 is provided with a rope 21, the rope winding shaft 2 is of an axial hollow structure, the clutch 6 is arranged inside the rope winding shaft 2, and the clutch 6 is connected with the rope winding shaft 2 through a one-way rotating structure. The clutch can be selected to be connected with the rope winding shaft 2 through a one-way bearing 5.

In the above scheme, the clutch still includes the drum portion of stopping, be equipped with first brake unit in the drum portion of stopping, be braking state under the first brake unit initial condition, adjust by descending accuse fast unit first brake unit is right the size of drum portion braking force of stopping to adjust rope release speed.

Further, referring to fig. 12, 15 and 16, the life saving device further includes a rope retracting unit including a hand crank 100, a transmission gear ring 4 and a driving gear 41; the transmission gear ring 4 is indirectly or directly arranged on the rope winding shaft 2, the driving gear 41 is meshed with the transmission gear ring 4, and the hand crank 100 is detachably connected with the driving gear 41.

Specifically, the first brake unit 7 acts on the clutch 6 to fix the clutch 6, and when the rope 21 needs to be paid out, for example, when a user falls from high altitude by using the life saving device, gravity rotates the rope winding shaft 2 in a reverse direction, and the rope winding shaft 2 rotates the clutch 6 through the one-way bearing 5; in the process, the landing speed can be adjusted by controlling and adjusting the braking force of the first brake unit 7 on the drum brake part 62. In addition, the driving gear 41 can be rotated by the hand crank 100 to drive the transmission gear ring 4 to rotate the rope winding shaft 2 forward so as to recover the rope, and the rope winding shaft 2 rotating forward does not drive the clutch 6, so that the rope is not influenced by the first braking unit when being recovered.

In the above embodiment, referring to fig. 1-4, the life saving device may further include a frame 1, two mounting plates 11 are disposed on the frame 1, and a housing 12 covers the outside of the frame 1; wherein, a handheld controller A and a handheld controller B which are convenient for two-hand operation are also extended; the two ends of the main shaft 3 can be fixed on the frame 1 or the mounting plate 11, in addition, the shape of the frame 1 is a frame structure as a whole, and can also be designed into an arc shape fitting the back according to human engineering, and a safety belt is provided for the operator to carry, wherein the safety belt can comprise a shoulder belt 13, a waist belt 14 and a leg strap 15, and the shoulder belt 13, the waist belt 14 and the leg strap 15 can be accommodated in the shell 12 through the belt loading box 10; the mounting plate 11 in this embodiment may be a double-layered structure to facilitate mounting of various gear sets, bearings, and the like. Furthermore, one end of a cord 21 can be fixed to the cord reel 2, while the other end extends out of the housing 12 and is connected to a fastener 22. The driving gear 41 may be disposed on the frame 1 or the housing 12, referring to fig. 16, the hand lever 100 may be inserted from the bottom of the driving gear 41, and the driving gear 41 may be rotated by rotating the hand lever 100.

In some specific embodiments, from the viewpoint of safety, the first brake unit 7 should be in a braking state in an initial state; in this way, when the operator operates the life saving device to descend, even in a panic state, as long as no operation is performed, the first brake unit 7 is in a braking state, and the clutch 6 is fixed, thereby fixing the rope winding shaft 2. In addition, the magnitude of the braking force of the first brake unit 7 can be adjusted by the landing control unit to adjust the rope 21 release speed, i.e., the landing speed.

Specifically, in the above scheme, referring to fig. 6, 7, 10 and 11, the clutch 6 further includes a drum brake part 62, the first brake unit 7 is disposed in the drum brake part 62, the first brake unit 7 includes two arc-shaped drum brake sheets 71 disposed in the drum brake part 62, each end of the two drum brake sheets 71 is hinged, an expansion and contraction part 72 is disposed between each unconnected end of the two drum brake sheets 71, and the expansion and contraction part 72 is connected to a first brake arm 74 through a brake shaft 73; by rotating the first brake arm 74, the brake shaft 73 drives the expansion and contraction piece 72 to rotate, so as to expand or reduce the distance between the disconnected ends of the two drum brake pieces 71. The expansion and contraction piece 72 can be elliptical and comprises a longer part and a shorter part, when two ends of the longer part of the expansion and contraction piece 72 are respectively abutted to one end of each of the two drum brake sheets 71, the two arc drum brake sheets 71 are expanded to the maximum, and the braking force of the two drum brake sheets 71 to the drum brake part 62 is also the maximum; when the two ends of the shorter part of the expansion piece 72 are respectively abutted with one end of each of the two drum brake sheets 71, the opposite is true; when the expanding and contracting piece 72 is rotated, the expanding degree of the two drum brake pieces 71 can be adjusted, thereby adjusting the braking force on the drum brake part 62.

In the above solution, referring to fig. 10, the speed lowering and controlling unit includes a first spring 751, a first clutch rope 752 and a first control handle 753, the first clutch rope 752 is connected to the first brake arm 74 and the first control handle 753, respectively, and the first brake arm 74 is pulled to rotate by the first control handle 753 driving the first clutch rope 752; the first spring 751 urges the brake arm to reset. The first control handle 753 may be located in the handheld controller a19, and when an operator holds the handheld controller a19, the operator may control the rotation of the first brake arm 74 by holding the first control handle 753 with fingers and using the first clutch rope 752, which is convenient for operation.

In some embodiments, if the operator operates carelessly, the braking force of the first braking unit 7 may be completely removed, so that the landing speed is too fast to be unexpected; therefore, a speed-limiting brake unit 9 is provided to provide an initial braking force to the clutch 6 or the rope winding shaft 2, and the rope winding shaft 2 is limited by the braking force of the speed-limiting brake unit 9 even if the braking force of the first brake unit 7 is completely lost.

In the above embodiment, in fig. 8 and 9, the clutch 6 further includes a disk brake portion 63, the speed-limiting brake unit 9 is disposed on the disk brake portion 63, and the speed-limiting brake unit 9 includes a speed-limiting base 90, a disk brake sheet a94 and a disk brake sheet B95; the speed-limiting base body 90 comprises a lock shaft 91, the lock shaft 91 is sleeved on the main shaft 3, a disc brake part 63 of the clutch 6 is sleeved on the lock shaft 91, the disc brake piece A94 and the disc brake piece B95 are arranged on the lock shaft 91 and positioned on two sides of the disc brake part 63, and the disc brake piece A94 and the disc brake piece B95 are respectively in surface contact with the disc brake part 63; a ratchet part 951 is arranged on the disc brake sheet B95, and the ratchet part 951 is provided with a ratchet 96 corresponding to the ratchet part 951; when the ratchet 96 is buckled with the ratchet part 951, the lock shaft 91 is relatively fixed with the main shaft 3, and the speed-limiting braking unit 9 brakes the clutch 6; when the ratchet 96 is separated from the ratchet portion 951, the lock shaft 91 and the main shaft 3 can rotate relatively, and the clutch 6 drives the lock shaft 91 to rotate when rotating. The disc brake pieces a94 and B95 apply a certain braking force to the disc brake part 63, but at this time, if the braking force of the first brake unit 7 is removed, the clutch 6 can still rotate; in other words, the speed-limiting brake unit 9 corresponds to a primary brake, and the first brake unit 7 corresponds to a secondary brake, so that not only can the safety be increased, but also the load of the first brake unit 7 can be reduced.

In the above solution, referring to fig. 8, the disc brake B95 forms a circumferentially fixed but axially movable connection with the lock shaft 91; a threaded column 93 extends out of the lock shaft 91, an adjusting press block 98 is connected to the threaded column 93 through threads, the adjusting press block 98 abuts against the disc brake piece B95, and the position of the adjusting press block 98 on the threaded column 93 is adjusted, so that the braking force of the disc brake piece B95 to the disc brake part 63 is adjusted. The disc brake sheet B95 can be fixed on the lock shaft 91 by a spline connection; in addition, the dish stop piece A94 with lock shaft 91 threaded connection, lock shaft 91 is last the dish stop the one end at piece A94 place and be equipped with lock dish 92, the dish stop piece A94 orientation the one side of lock dish 92 is equipped with round pin 941, be equipped with the arc wall 921 on the lock dish 92, round pin 941 is located in the arc wall 921, still be equipped with arc spring 922 in the arc wall 921, arc spring 922's one end with the tip of arc wall 921 offsets, the other end with round pin 941 offsets.

Specifically, when the disc brake part 63 drives the disc brake piece a94 to rotate by using friction force, the disc brake piece a94 rotates along the thread on the lock shaft 91 and moves away from the disc brake part 63, and at the same time, the pin 941 on the disc brake piece a94 presses the arc spring 922, and the arc spring 922 urges the pin 941 to return, so that the disc brake piece a94 rotates along the thread on the lock shaft 91 and approaches the disc brake part 63; thus, the easy slipping of the disk brake piece A94 when the rotating speed of the clutch 6 is too high is avoided.

In the above scheme, the ratchet 96 is controlled by a speed-limiting control unit, the speed-limiting control unit includes a control arm 971, a pull rope 972, a first speed-limiting spring 973 and a control button 974, one end of the control arm 971 is connected to the ratchet, the other end is connected to the pull rope 972, and the pull rope 972 is connected to the control button 974; in an initial state, the ratchet 96 is engaged with the ratchet portion 951, and the control arm 971 is rotated by adjusting the control button 974, so that the first speed-limiting spring 973 urges the control arm 971 to return. In other words, the speed-limiting brake unit 9 is in a braking state in an initial state.

In the above scheme, the adjusting press block 98 is controlled by a speed-limiting adjuster 99, the speed-limiting adjuster 99 includes an adjusting gear 994, an adjusting rod 992, an adjusting spring 993 and an adjusting knob 991, the adjusting gear 994 and the adjusting knob 991 are respectively disposed at two ends of the adjusting rod 992, and the adjusting spring 993 is disposed on the adjusting rod 992; the adjusting pressing block 98 is provided with an outer gear ring; when the adjusting knob 991 is pressed down, the adjusting gear 994 is meshed with an external gear ring on the adjusting pressing block 98, and the adjusting knob 991 is rotated to drive the adjusting pressing block 98 to rotate; after the adjusting knob 991 is loosened, the adjusting spring 993 resets the adjusting gear 994 to be disengaged from the external gear ring on the adjusting pressing block 98. The adjusting knob 991 can be arranged on the shell 12, and the braking force of the speed-limiting braking unit 9 can be adjusted by rotating the adjusting knob 991.

In addition, referring to fig. 10 and 11, in view of safety, the speed limit control unit further includes a second speed limit spring 975, the second speed limit spring 975 urges the control button 974 to be reset; a first buckle tooth is arranged on the first brake arm 74, and a second buckle tooth is arranged on the control arm 971; after the control button 974 is pressed, the control arm 971 rotates, and the second buckle tooth is buckled with the first buckle tooth, at this time, the ratchet 96 is still buckled with the ratchet portion 951; by adjusting the first control handle 753, the first brake arm 74 is rotated to drive the control arm 971 to rotate, so that the ratchet 96 is separated from the ratchet portion 951. Wherein the control button 974 may also be provided on the handheld controller a 19; when the control button 974 is pressed, the pull rope 972 is tensioned by a lever structure, and the control arm 971 is buckled with the first brake arm 74; when the control button 974 is released, the second speed limiting spring 975 resets the control button 974, the pull rope 972 is loosened, and the first speed limiting spring 973 disengages the control arm 971 from the first brake arm 74.

Providing a specific implementation scenario for explaining that an operator needs to land on a ceiling of a building, pulls out the rope 21 and fixes the rope 21 on a stable object such as a door, a column, a guardrail and the like by using the fastener 22, and then further pulls out the rope 21 so that the operator can go to the edge of the ceiling to start landing; in the process of pulling out the rope 21, even if the braking force of the first brake unit 7 is removed without the aid of the operator's own weight, if the braking force of the speed limit brake unit 9 is limited, the operator pulls out the rope 21 hard, so that the braking force of the speed limit brake unit 9 needs to be temporarily removed, and the specific operation is as follows: an operator presses the control button 974 with a thumb to make the second tooth of the control arm 971 engage with the first tooth of the first brake arm 74, and then holds the first control handle 753 with other fingers, so that the braking force of the speed-limiting braking unit 9 and the braking force of the first braking unit 7 are both removed, and the rope 21 can be easily pulled out. The operation mode can effectively prevent the operator from easily removing the braking force of the speed-limiting braking unit 9 due to misoperation.

In the above scheme, in order to avoid an accident caused by the failure of the first brake unit 7 and the speed-limiting brake unit 9, the life saving device further comprises a second brake unit 8, wherein the second brake unit 8 acts on the rope winding shaft, the second brake unit 8 is in a non-braking state in an initial state, and the magnitude of the braking force of the second brake unit 8 on the rope winding shaft 2 is adjusted through an emergency control unit. The structure of the second brake unit 8 can refer to the first brake unit 7, and can also refer to other existing brake structures; the emergency control unit can be arranged on the handheld controller B18; when the first brake unit 7 and the speed-limiting brake unit 9 are out of order without braking effect, emergency braking can be performed by operating the hand-held controller B18.

In some specific embodiments, referring to fig. 12, in order to fully utilize the rope winding space on the rope winding shaft 2, the life saving device further includes a rope guider 23, the rope guider 23 includes a reciprocating lead screw 231, a slider 232 and a positioning groove, the reciprocating lead screw 231 is in transmission connection with the rope winding shaft 2 and is provided with two thread grooves with the same pitch and opposite rotation directions, two ends of the thread grooves form a wedge-shaped surface with a transition part of the reciprocating lead screw 231 body, a shifting block 233 hinged with the slider 232 is arranged in the slider 232, the shifting block 233 is connected with one thread groove of the reciprocating lead screw 231 to realize the reciprocating motion of the slider 232 on the reciprocating lead screw 231, the slider 232 is further in sliding connection with a positioning groove parallel to the reciprocating lead screw 231 to prevent the slider 232 from rotating, one end of the rope 21 passes through the slider 232 and then is connected with the rope winding shaft 2, the automatic rope arrangement of the life saving device in the descending process is realized.

In some specific embodiments, referring to fig. 12, in order to avoid the rope 21 from being wound into a lump in the housing 12, the life saving device further includes a rope tensioner 24, the rope tensioner 24 includes a fixed pulley 242 and a movable pulley 241, the fixed pulley 242 and the movable pulley 241 are respectively located at both sides of the rope 21 to clamp the rope 21; the movable pulley 241 is in transmission connection with a micromotor 243; the fixed pulley 242 is slidably disposed in a sliding groove (not shown) provided on the frame 1, and a buffer spring 244 is connected to the fixed pulley 242, and the buffer spring 244 urges the fixed pulley 242 to move in the sliding groove to press the rope 21. Wherein, the position of the movable pulley 241 is fixed, but can be driven by the micro motor 243 to rotate; the fixed pulley 242 is movable along the slide groove.

In some embodiments, in order to protect the housing, the housing is provided with rollers 121, so that when the life saving device is used for landing, the rollers 121 can roll along the outer wall of the building, and the housing is prevented from being damaged.

In general, when an operator descends at a high place, one end of the rope 21 with the fastener 22 is fixed, then the braking force of the first braking unit 7 and the speed-limiting braking unit 9 is temporarily removed, and then the rope 21 with enough length is pulled out and moved to a jump-off point; at the moment, the operator respectively operates the handheld controller A19 and the handheld controller B18 with two hands, releases all operations, restores the braking force of the first brake unit 7 and the speed-limiting brake unit 9, then suspends in the air, and holds the first control handle 753 on the handheld controller A19 to adjust the descending speed.

However, special cases are not excluded, for example, the person needing to land is a patient, a disabled person, a child, etc. with an operation capability of about zero, and referring to fig. 14, a hanging hole 300 is provided on the frame 1, the rescue helicopter can be connected through the hanging hole 300, a safety belt is further provided on the fastener 22, and the person is fixed on the safety belt and then transported away. Even when the goods are transported, the hanging holes 300 on the frame 1 are connected with equipment such as a crane, the goods are fixed on the fasteners 22, and the goods are transported away.

In other specific application scenarios, when the life saving device is used, a lifting aid frame 200 can be matched, an inclined plane is arranged on the lifting aid frame 200, a sliding rail 210 matched with the roller 121 is arranged on the inclined plane, and an anti-sliding foot 220 which is kept fixed is further arranged on the lifting aid frame 200; specifically, for example, when a high-rise balcony is landed, the landing assistant frame 200 is placed at the edge of the balcony, the operator sits on the inclined surface of the landing assistant frame 200, the roller 121 corresponds to the slide rail 210, and the operator grasps the first control handle 753 of the handheld controller a19 to start landing and slide out along the slide rail 210; in this process, the anti-slide foot 220 can be stuck out of the edge of the building or fixture to prevent the descending-assisting frame 200 from sliding backwards under the action of the recoil force of the operator sliding out.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A life saving device, which is characterized in that:

comprises a main shaft, a clutch and a rope winding shaft;

two ends of the main shaft are fixed, and the clutch is sleeved on the main shaft;

the rope winding shaft is provided with a rope, the rope winding shaft is of an axial hollow structure, the clutch is arranged inside the rope winding shaft, and the clutch is connected with the rope winding shaft through a one-way rotating structure.

2. A life saving device as claimed in claim 1, wherein: the clutch further comprises a drum braking part, a first braking unit is arranged on the drum braking part, the first braking unit is in a braking state under an initial state, and the first braking unit is adjusted by a descending speed control unit to adjust the braking force of the drum braking part so as to adjust the releasing speed of the rope.

3. A life saving device as claimed in claim 2, wherein: the first brake unit comprises two arc-shaped drum brake sheets arranged in the drum brake part, one ends of the two drum brake sheets are hinged, an expansion piece is arranged between the unconnected ends of the two drum brake sheets, and the expansion piece is connected with a first brake arm through a brake shaft; the brake shaft drives the expansion and contraction piece to rotate by rotating the first brake arm, so that the distance between the unconnected ends of the two drum brake pieces is expanded or reduced; the descending speed control unit comprises a first spring, a first clutch rope and a first control handle, the first clutch rope is respectively connected with the first brake arm and the first control handle, and the first clutch rope is driven by the first control handle to pull the first brake arm to rotate; the first spring urges the brake arm to return.

4. A life saving device as claimed in claim 3, wherein: the clutch also comprises a disc brake part, and the disc brake part is provided with a speed-limiting brake unit; the speed-limiting braking unit provides initial braking force for the clutch and limits the speed of the rope winding shaft for releasing the rope; the speed-limiting braking unit comprises a speed-limiting base body, a disc braking sheet A and a disc braking sheet B; the speed-limiting base body comprises a lock shaft which is sleeved on the main shaft, a disc brake part of the clutch is sleeved on the lock shaft, a disc brake piece A and a disc brake piece B are arranged on the lock shaft and positioned on two sides of the disc brake part, and the disc brake piece A and the disc brake piece B are respectively in surface contact with the disc brake part; the disc brake sheet B is provided with a ratchet part, and the ratchet part is provided with corresponding ratchets; when the ratchet is buckled with the ratchet wheel part, the lock shaft and the main shaft are relatively fixed, and the speed-limiting braking unit brakes the clutch; when the ratchet is separated from the ratchet part, the lock shaft and the main shaft can rotate relatively, and the clutch drives the lock shaft to rotate when rotating.

5. A life saving device as claimed in claim 4, wherein: the disc brake sheet B and the lock shaft form a connection which is fixed in the circumferential direction and can move in the axial direction; a threaded column extends out of the lock shaft, an adjusting pressing block is connected to the threaded column in a threaded mode and abuts against the disc brake piece B, and the position of the adjusting pressing block on the threaded column is adjusted, so that the braking force of the disc brake piece B on the disc brake part is adjusted; the adjusting press block is controlled by a speed-limiting adjuster, the speed-limiting adjuster comprises an adjusting gear, an adjusting rod, an adjusting spring and an adjusting knob, the adjusting gear and the adjusting knob are respectively arranged at two ends of the adjusting rod, and the adjusting spring is arranged on the adjusting rod; the adjusting pressing block is provided with an outer gear ring; when the adjusting knob is pressed down, the adjusting gear is meshed with an outer gear ring on the adjusting press block, and the adjusting knob is rotated to drive the adjusting press block to rotate; after the adjusting knob is loosened, the adjusting spring enables the adjusting gear to reset and separate from the outer gear ring on the adjusting pressing block; the dish stop piece A with lock axle threaded connection, the lock is epaxial the one end that the dish stopped piece A place is equipped with the lock dish, the dish stop piece A orientation the one side of lock dish is equipped with the round pin, be equipped with the arc wall on the lock dish, the round pin is located in the arc wall, still be equipped with the arc spring in the arc wall, the one end of arc spring with the tip of arc wall offsets, the other end with the round pin offsets.

6. A life saving device as claimed in claim 5, wherein: the ratchet is controlled by a speed-limiting control unit, the speed-limiting control unit comprises a control arm, a pull rope, a first speed-limiting spring and a control button, one end of the control arm is connected with the ratchet, the other end of the control arm is connected with the pull rope, and the pull rope is connected with the control button; in an initial state, the ratchet is buckled with the ratchet part, the control arm is rotated by adjusting the control button, and the first speed limiting spring urges the control arm to reset; the speed-limiting control unit also comprises a second speed-limiting spring, and the second speed-limiting spring drives the control button to reset; the first brake arm is provided with a first buckle tooth, and the control arm is provided with a second buckle tooth; after the control button is pressed down, the control arm rotates, the second buckling teeth are buckled with the first buckling teeth, and the ratchet is still buckled with the ratchet wheel part at the moment; through adjusting the first control handle, the first brake arm is rotated to drive the control arm to rotate, so that the ratchet is separated from the ratchet part.

7. A life saving device as claimed in claim 1, wherein: the life saving device further comprises a second brake unit, the second brake unit acts on the rope winding shaft, the second brake unit is in a non-braking state in an initial state, and the magnitude of the braking force of the second brake unit on the rope winding shaft is adjusted through an emergency control unit.

8. A life saving device as claimed in claim 1, wherein: still include the rope winding jib, the rope winding jib includes reciprocal lead screw, slider and constant head tank, reciprocal lead screw with the wiring shaft drive is connected, and it is equipped with two thread pitches the same, revolves to opposite thread groove, the thread groove both ends with the transition department of reciprocal lead screw body forms the wedge, be equipped with in the slider with slider articulated shifting block, the shifting block with one of them thread groove of reciprocal lead screw is connected, realizes the slider is in reciprocating motion on the reciprocal lead screw, the slider still with one be on a parallel with the constant head tank sliding connection of reciprocal lead screw is in order to prevent the slider rotation, the one end of rope is passed behind the slider with the wiring hub connection realizes the automatic rope winding of this life saving appliance at descending in-process.

9. A life saving device as claimed in claim 1, wherein: the rope winding device further comprises a rope winding unit, wherein the rope winding unit comprises a crank handle, a transmission gear ring and a driving gear; the transmission gear ring is indirectly or directly arranged on the rope winding shaft, the driving gear is meshed with the transmission gear ring, and the hand crank is detachably connected with the driving gear; the driving gear is rotated through the hand crank, so that the transmission gear ring is driven to rotate around the rope shaft, and the rope is recovered.

10. A life saving device as claimed in any one of claims 1 to 9, wherein: the device comprises a frame, wherein two mounting plates are arranged on the frame, and two ends of a main shaft are fixed on the two mounting plates; the frame is covered with a shell.