CN109330781B

CN109330781B - Transfer device

Info

Publication number: CN109330781B
Application number: CN201811196972.7A
Authority: CN
Inventors: 周红生; 陈宇; 郑千里; 迟传德
Original assignee: Anhui Polytechnic University
Current assignee: Anhui Polytechnic University
Priority date: 2018-10-15
Filing date: 2018-10-15
Publication date: 2024-05-14
Anticipated expiration: 2038-10-15
Also published as: CN109330781A

Abstract

The invention discloses a transfer device, which is characterized in that: the seat cushion assembly comprises a seat cushion assembly and a seat back assembly connected to the seat cushion assembly, wherein a movable base is arranged below the seat cushion assembly, the seat cushion assembly is connected with a lifting mechanism capable of controlling the lifting of the seat cushion assembly, and the seat cushion assembly can be pushed out or pulled back along a pushing track arranged below the seat cushion assembly. The transfer device has a simple structure, is used for transferring the inconvenient person, can conveniently transfer the inconvenient person from one position to another position, does not need to take effort to support the patient for turning around and then transfer the inconvenient person, saves time and labor in use, has good comfort for the patient in the whole process, and has better application prospect.

Description

Transfer device

Technical Field

The invention belongs to the technical field of medical care appliances, and particularly relates to a transfer device for transferring patients.

Background

For some patients with inconvenient actions, a caretaker usually lifts the patient on a bed, slowly transfers the patient to a wheelchair, and then pushes and transfers the patient to a corresponding position by the wheelchair. The transfer mode of putting the patient on the bed and taking the patient off the bed is laborious for a caretaker to transfer the patient, and the caretaker is easy to cause uncomfortable feeling for the patient.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a transfer device which is simple in structure, convenient to use, labor-saving and comfortable.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the provided transfer device is characterized in that: the seat cushion assembly comprises a seat cushion assembly and a seat back assembly connected to the seat cushion assembly, wherein a movable base is arranged below the seat cushion assembly, the seat cushion assembly is connected with a lifting mechanism capable of controlling the lifting of the seat cushion assembly, and the seat cushion assembly can be pushed out or pulled back along a pushing track arranged below the seat cushion assembly.

In order to make the above technical solution more detailed and concrete, the present invention further provides the following preferred technical solutions, so as to obtain a satisfactory practical effect:

the chair back assembly comprises a chair back framework and a chair back supporting surface connected to the chair back framework, a headrest support is connected above the chair back framework, and a headrest is connected to the headrest support.

The chair back framework comprises a main core framework and a supporting framework supported at the rear of the main core framework, the main core framework comprises main side frameworks which are symmetrically arranged at intervals on two sides and transverse frameworks which are connected between the main side frameworks, and the supporting framework comprises supporting side frameworks which are symmetrically arranged at intervals on two sides and transverse pushing rods which are connected between the supporting side frameworks.

The upper section of the main side framework is of a forwardly-protruding arch structure, the upper section of the supporting side framework is of an arch structure opposite to the protruding direction of the main side framework, and the upper end of the main side framework is a handle connecting rod which is formed by extending backwards and is used for installing a handle.

The headrest support is of a U-shaped structure, one end of an opening of the U-shaped structure is connected to the transverse framework, the other end of the opening of the U-shaped structure extends from top to bottom along the arch-shaped surface of the main side framework in a fitting mode, and the headrest is detachably sleeved on the headrest support.

The cushion assembly comprises a cushion body and side cushions connected to two sides of the cushion body, a cushion framework is arranged below the cushion body, a pushing track fixedly mounted on a connecting support is arranged below the cushion framework, and the cushion assembly can slide along the pushing track.

The lifting mechanism comprises a lifting main cylinder and a control connecting rod for driving the piston top rod end of the lifting main cylinder to move upwards, and the extending end of the piston top rod of the lifting main cylinder is connected to the connecting support.

The lifting mechanism is further provided with a lifting auxiliary cylinder, the control connecting rod is connected to the piston rod end of the lifting auxiliary cylinder, and the lifting auxiliary cylinder is connected to the lifting main cylinder through an oil outlet pipe.

The movable base comprises two base bodies which are arranged at intervals in parallel, an extension base capable of sliding and stretching along the base bodies is connected in the base bodies, a main travelling wheel is connected to the rear of the base bodies, and an auxiliary travelling wheel is arranged at the front end of the extension base.

The rear end of the base body is provided with an arc pedal bracket.

The two base bodies are connected through a connecting assembly, the connecting assembly comprises a main supporting plate and side supporting plates arranged on two sides of the main supporting plate, and two sides of the side supporting plates are respectively hinged to the base bodies and the main supporting plates.

The base body is provided with a mounting groove connected with the side support plate at the upper outer side edge, and a hinge shaft connected with the side support plate is arranged in the mounting groove.

The cushion assembly is connected with the chair back assembly through a connection control mechanism.

The connecting control mechanism comprises a cushion fixing plate connected below the cushion assembly and a seat back fixing plate connected at the lower end of the seat back assembly, mounting holes which correspondingly penetrate through a connecting shaft are formed in the cushion fixing plate and the seat back fixing plate, and a first reset spring is arranged on the connecting shaft.

The seat cushion fixing plate is provided with a positioning hole, the seat cushion positioning pin is inserted into a positioning groove arranged on the pushing track through the positioning hole, and two ends of the seat cushion positioning pin are of telescopic pin head structures.

One side of the cushion assembly is provided with a sliding control switch for controlling the pin heads at two ends of the cushion positioning pin to stretch out and draw back.

The sliding control switch comprises a sliding control switch body and a sliding control switch knob, wherein a reel wound with a pull wire is arranged on the sliding control switch body, a polygonal clamping groove is formed in one end of the reel, a clamping block which is clamped in the polygonal clamping groove in a matched mode is arranged at one end of the sliding control switch knob, and the pull wire is connected to the pin head respectively.

And a third reset spring is arranged between the pin heads at the two ends.

And a second reset spring is arranged on the sliding control switch knob.

Compared with the prior art, the invention has the following advantages: the transfer device has a simple structure, is used for transferring the inconvenient person, can conveniently transfer the inconvenient person from one position to another position, does not need to take effort to support the patient for turning around and transfer the patient, saves time and labor during use, has good comfort for the patient in the whole process, and has stronger practicability and better application prospect.

Drawings

The contents expressed in the drawings of the present specification and the marks in the drawings are briefly described as follows:

FIG. 1 is a schematic diagram of a transfer device according to the present invention;

FIG. 2 is a schematic diagram of an explosive structure of a transfer device according to the present invention;

FIG. 3 is a schematic view of a chair back assembly according to the present invention;

FIG. 4 is a schematic view of the structure of the seat cushion assembly of the present invention;

FIG. 5 is a schematic view of a mobile base structure according to the present invention;

FIG. 6 is a schematic view of the seat back and seat cushion connection control mechanism of the present invention;

FIG. 7 is a schematic view of the seat back and seat cushion connection control mechanism of the present invention;

Fig. 8 is a schematic view of the structure of the lifting mechanism of the invention.

Marked in the figure as: 1. a chair back assembly, 101, a chair back framework, 102, a chair back supporting surface, 103, a headrest bracket, 104, a headrest, 105, a handle, 106, a transverse pushing rod anti-slip sleeve, 107 and an auxiliary pull rod anti-slip sleeve,

2. Cushion assembly, 201, side cushion, 202, cushion body, 203, cushion skeleton, 204, pushing track, 205, ball, 206, connecting support,

3. A movable base, 301, a base body, 302, an extension base, 303, side support plates, 304, a main support plate, 305, a pedal bracket, 306, a pedal, 307, a main walking wheel, 308, an auxiliary walking wheel,

4. A connection control mechanism 401, a cushion fixing plate 402, a rotation adjusting rod 403, a fixing clip 404, a chair back fixing plate 405, a second return spring 406, a first return spring 407, a sliding control switch knob 408, a sliding control switch body 409, a stay track 410, a cushion locating pin 411, a third return spring,

5. The lifting mechanism 501, the lifting main cylinder 502, the piston ejector rod 503, the control connecting rod 504, the lifting auxiliary cylinder 505 and the pressure relief valve.

Detailed Description

The following description of the embodiments of the present invention refers to the accompanying drawings, which illustrate in further detail.

The transfer device of the invention, as shown in figures 1 and 2, comprises a cushion assembly 2 and a chair back assembly 1 connected to the cushion assembly 2, wherein a movable base 3 is arranged below the cushion assembly 2, the cushion assembly 2 is connected with a lifting mechanism 5 capable of controlling the lifting of the cushion assembly 2, and the cushion assembly 2 can be pushed out or pulled back along a pushing track 204 arranged below the cushion assembly. The product uses the principle of human bionics to simulate the motion of another person by carrying back, and assists the person to transfer the person with inconvenient legs and feet. Unlike the conventional auxiliary equipment such as a wheelchair, the product is designed in a way of reverse thinking to enable a person to sit back on the chair, and the front body is transferred on the chair back like lying on the back of the person and carried on the back. The user does not need to expend excessive force to turn around to move the back towards the wheelchair and then move the body. The cushion assembly 2 is equivalent to two hands for supporting, the seat back assembly 1 is connected with the cushion assembly 2, the cushion assembly 2 can be pushed forward along with the seat back assembly 1, and a lifting mechanism 5 capable of being used for adjusting the height is additionally arranged below the cushion assembly 2 so as to adapt to scenes with different heights. When the seat cushion assembly 2 is used, the seat cushion assembly 2 is adjusted to the corresponding height under the action of the lifting mechanism 5, the height corresponds to the height of the position where a person to be transferred is located, so that the person to be transferred conveniently moves the person to be transferred, at the moment, the person to be transferred faces the transfer device to sit on a bed or other positions, the seat back assembly 1 is pushed to drive the seat cushion assembly 2 to move forwards along the pushing guide rail 204, the person to be transferred conveniently sits on the seat cushion assembly 2, and can be transferred to the position to be moved forward by bending over on the seat back.

In the present invention, as shown in fig. 3, the seatback assembly 1 includes a seatback frame 101 and a seatback support surface 102 connected to the seatback frame 101 for bending over the body. A headrest support 103 is connected above the seatback frame 101, and a headrest 104 is connected to the headrest support 103. The headrest support 103 is used for installing and supporting a headrest 104, and the headrest 104 is used for supporting the head, so that a person can lie prone on the chair back more comfortably.

In the present invention, the back frame 101 includes a main core frame and a support frame supported at the rear of the main core frame. As shown in fig. 3, the main core skeleton includes main side skeletons symmetrically arranged at intervals at both side edges and a transverse skeleton connected between the main side skeletons; the supporting framework comprises supporting side frameworks which are symmetrically arranged at two sides at intervals and transverse pushing rods which are connected between the supporting side frameworks. Wherein, main side skeleton upper segment is the arch structure that the forward is protruding, simulates human back curve molding, better completion "groveling" this action. Simultaneously, the arch structure steel bones on both sides of the main side framework become handles capable of assisting arms to borrow force, and the arch structures on both sides of the main side framework are provided with auxiliary pull handle anti-slip sleeves 107, so that when a person to be transferred moves, the body can be pulled forcefully by means of the auxiliary pull handles, and the body can be moved conveniently to sit on the cushion assembly and adjusted to a comfortable position. The upper section of the supporting side framework is of an arch structure with the direction opposite to the protruding direction of the main side framework, so that the supporting structure is better, and the mechanism stability of the framework is enhanced. The upper end of the main side skeleton is provided with a handle connecting rod which is formed by extending backwards and is used for installing the handle 105, and the handle 105 can be conveniently used by an operator for controlling the transfer device. The transverse pushing rod is provided with a transverse pushing rod anti-skid sleeve 106, and an operator can act on the chair back by means of force so as to better control the chair back and the cushion to push forwards.

In the invention, as shown in fig. 1 and 3, the headrest support 103 has a U-shaped structure, one end of an opening of the U-shaped structure is connected to the transverse framework, the other end of the opening of the U-shaped structure is attached and extended along the arch surface of the main side framework from top to bottom, the structure is arranged to support the head of a person more comfortably, the headrest 104 is detachably sleeved on the headrest support 103, and the headrest support 103 is sleeved on the headrest support from bottom to top so as to facilitate disassembly and cleaning.

In the invention, as shown in fig. 4, a cushion assembly 2 comprises a cushion body 202 and side cushions 201 connected to two sides of the cushion body 202, a cushion framework 203 is arranged below the cushion body 202, a pushing track 204 fixedly arranged on a connecting support 206 is arranged below the cushion framework 203, and the cushion assembly 2 can slide along the pushing track 204. In use, a person straddles the seat assembly 2 with the side bolsters 201 on either side of the seat body 202 to cushion the side pressure exerted by the person's legs. The seat cushion body 202 is a main body structure with a certain supporting hardness, and the surface is soft fabric, namely a common seat cushion. The pushing track 204 is positioned to support a track for pushing the cushion, the pushing track 204 is fixed on the connecting support 206, the pushing track 204 can be a ball track or a clamping block track, wherein an embodiment provided by the drawing is a ball track, the balls 205 are fixed through upper and lower supporting and fixing plates, the cushion assembly 2 can slide along the surfaces of the balls so as to reduce sliding friction, and when the position of the cushion assembly needs to be adjusted, forward pushing can be realized by slightly applying acting force. The seat frame 203 is used for supporting the seat assembly and is connected with the lower connection control mechanism 4.

In the present invention, as shown in fig. 7, the lifting mechanism 5 comprises a lifting main cylinder 501 and a control link 503 for driving the piston rod 502 end of the lifting main cylinder 501 to move upwards, the extending end of the piston rod 502 of the lifting main cylinder 501 is connected to the connection support 206, in order to control the lifting main cylinder 501 to lift, the lifting mechanism 5 is further provided with a lifting auxiliary cylinder 504, the control link 503 is connected to the piston rod end of the lifting auxiliary cylinder 504, and the lifting auxiliary cylinder 504 is connected to the lifting main cylinder 501 through an oil outlet pipe. As shown in fig. 7, a check valve which can be conducted in one direction toward the lifting main cylinder 501 is provided in the oil outlet pipe, and an oil inlet pipe of the lifting sub cylinder 504 is connected to an oil tank provided below the lifting main cylinder, and a check valve which can be conducted in one direction toward the lifting sub cylinder 504 is provided in the oil inlet pipe. By pressing the operating link 503 downwards, the piston rod end of the lifting auxiliary cylinder 504 is driven to move downwards, oil enters the lifting main cylinder 501 through the oil outlet pipe, the piston ejector rod 502 rises, the cushion assembly 2 is driven to rise in height, and the process oil for lifting the operating link 503 enters the lifting auxiliary cylinder 504 from the oil tank. An oil return pipe communicated with an oil tank is arranged on the lifting main cylinder 501, and a pressure relief valve 505 for controlling oil in the lifting main cylinder 501 to flow back to the oil tank is arranged on the oil return pipe so as to realize the height downward adjustment of the control cushion assembly 2. Wherein the operating link 503 may be adjusted manually or with foot control.

In the present invention, as shown in fig. 5, the movable base 3 includes two parallel base bodies 301 arranged at intervals, and an extension base 302 that can slide and stretch along the base bodies 301 is connected. The telescopic structure design reduces the whole positive effect of the telescopic structure design while meeting the use requirement. The rear of the base body 301 is connected with a main road wheel 307, and the front end of the extension base 302 is provided with an auxiliary road wheel 308. The secondary road wheels 308 are preferably coupled to the extension base 302 by a universal swivel bearing.

In the invention, the rear end of the base body 301 is provided with the arc-shaped pedal support 305, and the pedal support 305 is provided with the pedal 306, so that feet can be conveniently carried on a person sitting on the chair, and meanwhile, the arc-shaped pedal structure forms the wheel cover of the main travelling wheel 307, so that the safety is good, the appearance is attractive, the structural design is ingenious, and the use comfort is further improved.

In the present invention, two base bodies 301 are connected by a connecting assembly, the connecting assembly comprises a main supporting plate 304 and side supporting plates 303 arranged at two sides of the main supporting plate 304, and two sides of the side supporting plates 303 are respectively hinged on the base bodies 301 and the main supporting plates 304. The main supporting plate 304 is connected with the supporting lifting mechanism 5, and the side supporting plates 303 are rotatably hinged with the base body 301, so that the base body 301 can be folded and stored. The outer side edge of the base body 301 is provided with a mounting groove for connecting the side supporting plate 303, and a hinge shaft connected with the side supporting plate 303 is arranged in the mounting groove. The setting of mounting groove is convenient for hinge installation, and the inboard position is higher than the position of mounting groove and forms the support to the side stay plate 303, and stability is good, and structural connection is simple, when equipment is not used, the base part can shrink folding and the cushion is almost wide, conveniently accomodates.

In the invention, the cushion assembly 2 and the seat back assembly 1 are connected through the connection control mechanism 4. As shown in fig. 6, the connection control mechanism 4 includes a seat cushion fixing plate 401 connected to the seat cushion frame 203 below the seat cushion assembly 2 and a seat back fixing plate 404 connected to the lower end of the seat back assembly 1, the seat cushion fixing plate 401 and the seat back fixing plate 404 constituting a main body casing of the rotating device. The cushion fixing plate 401 and the seatback fixing plate 404 are provided with mounting holes which correspondingly pass through a connecting shaft, and the connecting shaft is provided with a first return spring 406. The fixed clamping piece 403 both ends are connected through the axial support of connecting respectively on cushion fixed plate 401 and back of the chair fixed plate 404, and first reset spring 406 connects on fixed clamping piece 403, and adjust pole 402 wears to locate on one of them epaxial, and the one end threaded connection of adjusting the pole is at this axle screw hole, is equipped with the axle of adjusting pole 402 and is the sectional structure, and fixed clamping piece 403 interval arrangement is between every section, and this regulation pole 402 realization is adjusted through the rotation and is pressed from both sides fixed clamping piece 403 tightly, and its relative axle is not rotated, realizes fixed back of the chair angle regulation through fixed clamping piece 403 promptly. The rotation adjusting rod 402 is released, the fixing clamping piece 403 is released, the rotation of the fixing clamping piece relative to the adjusting rod 402 can be realized, the chair back angle can be adjusted, and the chair back angle can be adjusted by pulling the chair back relatively. When the angle is proper, the adjusting rod 402 is fastened, and the fixing clamping piece 403 is locked, so that the fixing clamping piece 403 and the adjusting rod 402 cannot rotate to fix the chair back fixing plate 404, and the angle of the chair back is fixed. When the adjusting rod 402 is released, the fixing clip 403 is loosened from the clamping state, and the chair back automatically returns to the original position under the action of the first return spring 406.

In the invention, a positioning hole is arranged on a cushion fixing plate 401, a cushion positioning pin 410 passes through the positioning hole and is inserted into a positioning groove arranged on a pushing track 204, and two ends of the cushion positioning pin 410 are provided with telescopic pin head structures. A slide control switch for controlling the expansion and contraction of the pin heads at the two ends of the cushion positioning pin 410 is arranged at one side of the cushion assembly. The sliding control switch comprises a sliding control switch body 408 and a sliding control switch knob 407, wherein the sliding control switch body 408 is provided with a reel wound with a pull wire, one end of the reel is provided with a polygonal clamping groove, one end of the sliding control switch knob 407 is provided with a clamping block which is matched and clamped in the polygonal clamping groove, and the pull wire is respectively connected to the pin head. When the seat cushion assembly is used, the clamping block is matched and clamped into the polygonal clamping groove by pressing the sliding control switch knob 407, the sliding control switch knob 407 is rotated to drive the scroll to scroll, the stay wire is pulled along the stay wire track 409 to drive the pin head to retract, and the pin head is separated from the limit between the pushing tracks 204, so that the seat cushion assembly is conveniently controlled to be pushed forward. A third return spring 411 is preferably provided between the pin heads at both ends, and a second return spring 405 is provided on the sliding control switch knob 407. The second reset spring 405 fixes the sliding control switch knob 407 at a rotating position, so that the seat cushion is convenient to adjust and move, after the adjustment is completed, the sliding control switch knob 407 is pulled out, and the pin head is popped up under the action of the third reset spring 411 to realize the positioning of the seat cushion.

The sliding control switch knob 407 is an unlocking switch for forward pushing of the cushion assembly, and the stay wire in the stay wire track 409 is pulled by rotation of the sliding control switch knob 407 to drive the pin head to stretch inwards against the force of the third reset spring 411, so that the pin head leaves a positioning groove at a fixed position on the pushing track 204, and the forward pushing position lock of the cushion is unlocked.

The transfer device has a simple structure, is used for transferring the inconvenient person, can conveniently transfer the inconvenient person from one position to another position, does not need to take effort to support the patient for turning around and transfer the patient, saves time and labor during use, has good comfort for the patient in the whole process, and has stronger practicability and better application prospect.

The invention has been described above by way of example with reference to the accompanying drawings, but the invention is not limited to the above, as long as various insubstantial modifications by the method concepts and technical solutions of the invention or direct application to other applications are within the scope of the invention.

Claims

1. The transfer device is characterized in that: the seat cushion assembly is connected with a lifting mechanism capable of controlling lifting of the seat cushion assembly, and the seat cushion assembly can be pushed out or pulled back along a pushing track arranged below the seat cushion assembly; the chair back assembly comprises a chair back framework and a chair back supporting surface connected to the chair back framework, a headrest support is connected above the chair back framework, and a headrest is connected to the headrest support; the chair back framework comprises a main core framework and a supporting framework supported at the rear of the main core framework, the main core framework comprises main side frameworks which are symmetrically arranged at intervals on two sides and transverse frameworks which are connected between the main side frameworks, and the supporting framework comprises supporting side frameworks which are symmetrically arranged at intervals on two sides and transverse pushing rods which are connected between the supporting side frameworks; the cushion assembly comprises a cushion body and side cushions connected to two sides of the cushion body, a cushion framework is arranged below the cushion body, a pushing track fixedly arranged on a connecting support is arranged below the cushion framework, and the cushion assembly can slide along the pushing track; the upper section of the main side framework is of a forwardly-protruding arch structure, and the upper section of the supporting side framework is of an arch structure with the direction opposite to that of the protruding main side framework; the headrest support extends from top to bottom along the arch-shaped surface of the main side framework in a fitting way.

2. The transfer device of claim 1, wherein: the upper end of the main side skeleton is provided with a handle connecting rod which is formed by extending backwards and is used for installing a handle.

3. A transfer device according to claim 2, wherein: the headrest support is of a U-shaped structure, one end of an opening of the U-shaped structure is connected to the transverse framework, the other end of the opening of the U-shaped structure extends from top to bottom along the arch-shaped surface of the main side framework in a fitting mode, and the headrest is detachably sleeved on the headrest support.

4. The transfer device of claim 1, wherein: the lifting mechanism comprises a lifting main cylinder and a control connecting rod for driving the piston top rod end of the lifting main cylinder to move upwards, and the extending end of the piston top rod of the lifting main cylinder is connected to the connecting support.

5. The transfer device of claim 4, wherein: the lifting mechanism is further provided with a lifting auxiliary cylinder, the control connecting rod is connected to the piston rod end of the lifting auxiliary cylinder, and the lifting auxiliary cylinder is connected to the lifting main cylinder through an oil outlet pipe.

6. The transfer device of claim 1, wherein: the movable base comprises two base bodies which are arranged at intervals in parallel, an extension base capable of sliding and stretching along the base bodies is connected in the base bodies, a main travelling wheel is connected to the rear of the base bodies, and an auxiliary travelling wheel is arranged at the front end of the extension base.

7. The transfer device of claim 6, wherein: the rear end of the base body is provided with an arc pedal bracket.

8. The transfer device of claim 7, wherein: the two base bodies are connected through a connecting assembly, the connecting assembly comprises a main supporting plate and side supporting plates arranged on two sides of the main supporting plate, and two sides of the side supporting plates are respectively hinged to the base bodies and the main supporting plates.

9. The transfer device of claim 8, wherein: the base body is provided with a mounting groove connected with the side support plate at the upper outer side edge, and a hinge shaft connected with the side support plate is arranged in the mounting groove.

10. Transfer device according to any one of claims 1 to 9, characterized in that: the cushion assembly is connected with the chair back assembly through a connection control mechanism.

11. The transfer device of claim 10, wherein: the connecting control mechanism comprises a cushion fixing plate connected below the cushion assembly and a seat back fixing plate connected at the lower end of the seat back assembly, mounting holes which correspondingly penetrate through a connecting shaft are formed in the cushion fixing plate and the seat back fixing plate, and a first reset spring is arranged on the connecting shaft.

12. The transfer device of claim 11, wherein: the seat cushion fixing plate is provided with a positioning hole, the seat cushion positioning pin is inserted into a positioning groove arranged on the pushing track through the positioning hole, and two ends of the seat cushion positioning pin are of telescopic pin head structures.

13. The transfer device of claim 12, wherein: one side of the cushion assembly is provided with a sliding control switch for controlling the pin heads at two ends of the cushion positioning pin to stretch out and draw back.

14. The transfer device of claim 13, wherein: the sliding control switch comprises a sliding control switch body and a sliding control switch knob, wherein a reel wound with a pull wire is arranged on the sliding control switch body, a polygonal clamping groove is formed in one end of the reel, a clamping block which is clamped in the polygonal clamping groove in a matched mode is arranged at one end of the sliding control switch knob, and the pull wire is connected to the pin head respectively.

15. The transfer device of claim 14, wherein: and a third reset spring is arranged between the pin heads at the two ends.

16. The transfer device of claim 15, wherein: and a second reset spring is arranged on the sliding control switch knob.