Auxiliary device for improving carrying balance of medical stretcher

Abstract

The invention relates to the technical field of stretchers, in particular to an auxiliary device for improving the carrying balance of a medical stretcher, which comprises a front balancer and a rear balancer, the front balancer and the rear balancer are respectively provided with a stretcher butting device, and a sliding rail and a bidirectional balancer are arranged between the front balancer and the stretcher butting device. The two-way balancer is movably arranged on the sliding rails, the two-way balancer and the stretcher butt-joint device are arranged in a rotating balance mode, the sliding rails and the connecting rods are arranged between the rear balancer and the stretcher butt-joint device, the connecting rods move on the corresponding sliding rails, and the connecting rods and the stretcher butt-joint device are arranged in a rotating balance mode. The manual carrying frame is reasonable in structure, can be applied to the manual carrying frame, is comfortable to wear, and can reduce the labor intensity of carrying personnel, improve the carrying stability and improve the carrying efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of stretchers, in particular to an auxiliary device for improving the carrying balance of a medical stretcher. Background Art

[0002] Existing stretchers, which mostly fall into two categories, basket stretchers and double-stick stretchers, play an important role in transporting people during accidents. However, most existing stretchers are carried manually, which makes it difficult for people to carry them for long periods of time and causes poor balance during the process. To alleviate fatigue, automated mechanical equipment has emerged, but this has also been shown to be inadequate for adaptability. For example, at earthquake sites, where the terrain is complex, manual transport is still preferred for transporting injured people.

[0003] Therefore, an auxiliary device for improving the carrying balance of a medical stretcher is developed, which can be applied to an existing manual carrying frame, reduce the labor intensity of the carrying personnel, and improve the carrying stability. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned technology and provide an auxiliary device for improving the carrying balance of a medical stretcher.

[0005] An auxiliary device for improving the carrying balance of a medical stretcher, comprising:

[0006] A front balancer, the front balancer including a backpack-type wearing device, a back plate provided on the rear side of the backpack-type wearing device, a vertical slide rail provided on the back plate, a bidirectional mover configured on the slide rail, a vertical tooth plate provided inside the slide rail, gears meshing with the tooth plate connected to both ends of the bidirectional mover via motors, two motors controlling the gears to rotate in opposite directions to achieve the lifting and lowering of the bidirectional mover, and a stretcher docking device provided on the side of the bidirectional mover away from the back plate;

[0007] A rear balancer, comprising a waist-span-leg wearing device, a rear plate provided on the rear side of the waist-span-leg wearing device, a vertical slide rail provided on the rear plate, and a stretcher docking device connected to the front of the waist-span-leg wearing device via a connecting rod. A motor is provided at the end of the connecting rod corresponding to the slide rail on the rear plate, a gear is provided at the output shaft end of the motor, and a gear plate is also provided in the slide rail on the rear plate to cooperate with the gear;

[0008] A motor is provided in the middle of the stretcher docking device, and stretcher connection clamps are provided at both ends. The central axis of the motor of the stretcher docking device at the front balancer is rigidly fixedly connected to the middle of the two-way mover, and the central axis of the motor of the stretcher docking device at the rear balancer is rigidly fixedly connected to the middle of the front of the connecting rod.

[0009] Furthermore, the backpack-type wearable device also includes two shoulder straps, a waist restraint belt, and side restraint belts located above the waist restraint belt. The top end of the shoulder strap is connected to the back plate, and the bottom end is connected to the waist restraint belt. Each shoulder strap is provided with an elastic buckle, and the waist restraint belt is provided with a lock between the two shoulder straps. Elastic belts are provided between the two shoulder straps on the front side of the human body, and a lock is provided between the two elastic belts.

[0010] Furthermore, the waist-cross-leg wearing device includes a waist restraint, a crotch restraint and two leg restraints, the rear plate is rigidly fixedly connected to the rear side of the crotch restraint, the waist restraint is above the crotch restraint, the waist restraint is hinged to the crotch restraint at a position close to the rear plate, the leg restraints are above the crotch restraint, and each leg restraint is hinged to the crotch restraint at a position away from the rear plate;

[0011] The front sides of the waist restraint and the crotch restraint are both provided with buckles, and the rear side of the leg restraint is provided with leg restraint belts.

[0012] Furthermore, the stretcher docking device further comprises a central motor area for mounting a motor, electric telescopic rods are provided on both sides of the central motor area, and the stretcher connection clamp is connected to the electric telescopic rods and can achieve 90° rotation;

[0013] The electric telescopic rod includes a fixed outer tube connected to the middle motor area, a telescopic inner rod is arranged in the fixed outer tube, and a reciprocating mechanism for controlling the movement of the telescopic inner rod is arranged between the fixed outer tube and the telescopic inner rod bracket;

[0014] The end of the telescopic inner rod away from the fixed outer tube is connected to the stretcher connecting clamp through a motor, and the motor controls the stretcher connecting clamp to realize 90° rotation.

[0015] Furthermore, a laser rangefinder is provided between the bottom sides of the two telescopic inner rods of each stretcher docking device for measuring the distance between the two stretcher connecting clamps.

[0016] Furthermore, the stretcher is connected to the clamp, and the stretcher is connected to the clamp, which includes two arc-shaped clamps arranged upper and lower and a bidirectional motor group that controls the two clamps to move closer or farther away, and each arc-shaped clamp has soft rubber on the inner side.

[0017] Furthermore, control handles are provided on both sides of the connecting rod and the waist-cross-leg wearing device.

[0018] Furthermore, the back plate and the rear plate are both provided with storage batteries.

[0019] Furthermore, the waist restraint and the hip restraint both include a front soft rubber and a rear hard plate, a lock buckle is provided on the front soft rubber, and a plurality of springs are provided inside the front soft rubber to provide elastic force to one side of the body.

[0020] Furthermore, a transparent shock-absorbing airbag is provided on the inner side of the shoulder strap;

[0021] The inner side of the back plate and the waist restraint close to the waist and back are both provided with polyester fiber sponges that conform to the waist and back curves.

[0022] Advantages of the present invention: The present invention has a reasonable structure, can be applied to a manual transport rack, is comfortable to wear, can reduce the labor intensity of transporters, improve transport stability, and improve transport efficiency;

[0023] The up-and-down movement setting between the bidirectional balancer and the slide rail of the front balancer, the rotational balance setting between the bidirectional balancer and the stretcher docking device, the up-and-down movement setting between the connecting rod of the rear balancer and the corresponding slide rail, and the rotational balance setting between the connecting rod and the stretcher docking device are conducive to ensuring the balance of the stretcher during transportation;

[0024] The electric telescopic rod of the stretcher docking device is combined with a laser rangefinder to control the distance between the two stretcher connection clamps to adapt to stretchers of different widths;

[0025] The stretcher connection clamp is able to turn at one end of the electric telescopic rod and can be adjusted in position according to the type of stretcher, making it easier to connect with the stretcher;

[0026] The two arc-shaped clamps of the stretcher connecting clamp can be opened and closed under the action of the two-phase motor group, so as to facilitate clamping the stretcher. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a first perspective schematic diagram of a front balancer of an auxiliary device for improving the carrying balance of a medical stretcher according to the present invention;

[0028] Figure 2 This is a second perspective schematic diagram of a front balancer of an auxiliary device for improving the carrying balance of a medical stretcher according to the present invention;

[0029] Figure 3 This is a first perspective schematic diagram of a rear balancer of an auxiliary device for improving the carrying balance of a medical stretcher according to the present invention;

[0030] Figure 4 This is a second perspective schematic diagram of a rear balancer of an auxiliary device for improving the carrying balance of a medical stretcher according to the present invention;

[0031] Figure 5 Schematic diagram of the lifting device for lifting the front and rear balancers of the present invention;

[0032] Figure 6 It is a schematic diagram of the motor, gear and tooth plate at the slide rail of the present invention;

[0033] Figure 7This is a schematic diagram of the motor arrangement between the bidirectional balancer and the stretcher docking device of the present invention;

[0034] Figure 8 is a schematic diagram of the electric telescopic rod of the present invention;

[0035] Figure 9 This is a schematic diagram of the steering structure of the stretcher connecting clamp of the present invention;

[0036] Figure 10 Schematic diagram of a bidirectional motor in a stretcher connecting a jaw clamp of the present invention;

[0037] Figure 11 The present invention is a block diagram of the principle of the control system of the front and rear balancers of the stretcher.

[0038] As shown in the figure: 1. Back-mounted wearable device; 2. Backboard; 3. Slide rail; 4. Bidirectional mover; 5. Gear plate; 6. Motor; 7. Gear; 8. Waist-crotch-leg wearable device; 9. Backboard; 10. Connecting rod; 11. Stretcher connecting clamp; 12. Elastic buckle; 13. Lock; 14. Laser rangefinder; 15. Control handle; 17. Reciprocator; 18. Bidirectional motor group; 101. Shoulder strap; 102. Waist restraint; 103. Side restraint; 104. Elastic belt; 105. Transparent shock-absorbing airbag; 201. Middle motor area; 202. Electric telescopic rod; 801. Waist restraint; 802. Crotch restraint; 803. Leg restraint; 804. Leg restraint; 1101. Arc splint; 2021. Fixed outer tube; 2022. Telescopic inner rod. DETAILED DESCRIPTION

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0041] In the description of the embodiments of the present invention, if a feature is referred to as being "set", "fixed", "connected" or "installed" on another feature, it may be directly set, fixed or connected on the other feature, or it may be indirectly set, fixed, connected or installed on the other feature.

[0042] In the description of the embodiments of the present invention, if the word "several" is mentioned, it means more than one; if the word "plurality" is mentioned, it means more than two; if the word "greater than," "less than," or "exceeds," it should be understood as excluding the number itself; if the word "above," "below," or "within" is mentioned, it should be understood as including the number itself. If the word "first" or "second" is mentioned, it should be understood as distinguishing technical features and should not be understood as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0043] The present invention will be described in further detail below with reference to the accompanying drawings.

[0044] Example

[0045] An auxiliary device for improving the carrying balance of a medical stretcher comprises a front balancer, a rear balancer, a lifting device for lifting the front balancer and the rear balancer, and a storage box for placing the front balancer, the rear balancer and the lifting device.

[0046] A front balancer includes a backpack-type wearing device 1, a back plate 2 is provided on the rear side of the backpack-type wearing device 1, a vertical slide rail 3 is provided on the back plate 2, a bidirectional mover 4 is configured on the slide rail 3, a vertical tooth plate 5 is provided in the slide rail 3, and gears 7 meshing with the tooth plate 5 are connected to both ends of the bidirectional mover 4 through motors 6. The two motors 6 control the gears 7 to rotate in opposite directions to achieve the lifting and lowering of the bidirectional mover 4. The bidirectional mover 4 is provided with a stretcher docking device on the side away from the back plate 2, and the motor 6 there may be a servo motor;

[0047] The backpack wearable device 1 further includes two shoulder straps 101, a waist restraint belt 102, and side restraint belts 103 located above the waist restraint belt 102. The top of the shoulder straps 101 is connected to the back plate 2, and the bottom is connected to the waist restraint belt 102. Each shoulder strap 101 is provided with an elastic buckle 12, and the waist restraint belt 102 is provided with a lock buckle 13 between the two shoulder straps 101. An elastic belt 104 is provided between the two shoulder straps 101 at the front side of the human body, and a lock buckle 13 is provided between the two elastic belts 104. A transparent shock-absorbing airbag 105 is provided on the inner side of the shoulder strap 101;

[0048] The inner side of the back panel 2 is provided with a polyester fiber sponge that conforms to the waist and back curves;

[0049] A motor 6 is provided in the middle of the stretcher docking device, which can be a brushless motor. Both ends are equipped with a stretcher connection clamp 11. The central axis of the motor 6 of the stretcher docking device at the front balancer is rigidly fixedly connected to the middle of the two-way mover 4, and the central axis of the motor 6 of the stretcher docking device at the rear balancer is rigidly fixedly connected to the middle of the front of the connecting rod 10.

[0050] The stretcher docking device also includes a central motor area 201 for mounting a motor 6. Both sides of the central motor area 201 are provided with electric telescopic rods 202. The stretcher connection clamp 11 is connected to the electric telescopic rods 202 and can achieve 90° rotation.

[0051] The electric telescopic rod 202 includes a fixed outer tube 2021 connected to the middle motor area 201, a telescopic inner rod 2022 is provided in the fixed outer tube 2021, and a reciprocating machine 17 for controlling the movement of the telescopic inner rod 2022 is provided on the fixed outer tube 2021 and the telescopic inner rod 2022 bracket. Figure 8 As shown, the reciprocating machine 17 includes a motor 6, which is connected to a screw extension device, such as an electric cylinder in the prior art;

[0052] The telescopic inner rod 2022 is connected to the stretcher connecting clamp 11 at one end away from the fixed outer tube 2021 through a motor 6, and the motor 6 controls the stretcher connecting clamp 11 to rotate 90 degrees. Figure 9 As shown, the motor 6 is fixed on the telescopic inner rod 2022, and the output shaft of the motor 6 is fixedly connected to one end of the stretcher connecting clamp 11. When the output shaft of the motor 6 rotates, the stretcher connecting clamp 11 rotates accordingly;

[0053] The stretcher connecting clamp 11 includes two arc-shaped clamps 1101 arranged up and down and a bidirectional motor group 18 for controlling the two clamps 1101 to move closer or farther away. The inner side of each arc-shaped clamp 1101 has a soft rubber, such as Figure 10 As shown, the bidirectional motor group 18 includes a motor 6 with a gear 7 at the output shaft end, and a toothed plate 5 on each side of the gear 7. Each toothed plate 5 is connected to an arc-shaped clamping plate 1101. The motor 6 controls the rotation of the gear 7, and the gear 7 controls the toothed plates 5 on both sides to move in opposite directions to realize the opening and closing of the two arc-shaped clamping plates 1101.

[0054] The back plate 2 is provided with a storage battery.

[0055] The rear balancer includes a waist-span-leg wearing device 8, a rear plate 9 is provided on the rear side of the waist-span-leg wearing device 8, and a vertical slide rail 3 is provided on the rear plate 9. The rear plate 9 is also connected to a stretcher docking device at the front position of the waist-span-leg wearing device 8 through a connecting rod 10. The end of the connecting rod 10 is provided with a motor 6 corresponding to the slide rail 3 on the rear plate 9. The output shaft end of the motor 6 is provided with a gear 7. The slide rail 3 on the rear plate 9 is also provided with a toothed plate 5 that cooperates with the gear 7. The up and down movement of the connecting rod 10 here is similar to the movement of the bidirectional mover 4 of the front balancer;

[0056] The waist-crotch-leg wearing device 8 includes a waist restraint 801, a crotch restraint 802 and two leg restraints 803. The back plate 9 is rigidly fixed to the back side of the crotch restraint 802. The waist restraint 801 is above the crotch restraint 802 and is hinged to the crotch restraint 802 at a position close to the back plate 9. The leg restraints 803 are below the crotch restraint 802. Each leg restraint 803 is hinged to the crotch restraint 802 at a position away from the back plate 9.

[0057] The front sides of the waist restraint 801 and the crotch restraint 802 are both provided with buckles 13, and the back side of the leg restraint 803 is provided with leg restraint belts 804;

[0058] The waist restraint 801 and the crotch restraint 802 each comprise a front soft rubber and a rear hard plate. The front soft rubber is provided with a lock buckle 13. The front soft rubber is provided with a plurality of springs to provide elastic force to one side of the body. The waist restraint 801 is provided with a polyester fiber sponge near the back of the waist that conforms to the curves of the waist and back.

[0059] The stretcher docking device of the rear balancer is the same as that of the front balancer, including an electric telescopic rod 202 controlled by a brushless motor. One end of the telescopic inner rod 2022 of the electric telescopic rod 202 is connected to a stretcher connecting clamp 11 that can rotate 90 degrees. The two arc-shaped clamps 1101 of the stretcher connecting clamp 11 can be opened and closed.

[0060] A laser rangefinder 14 is provided between the bottom sides of the two telescopic inner rods 2022 of each stretcher docking device for measuring the distance between the two stretcher connecting clamps 11;

[0061] The connecting rod 10 is provided with control handles 15 on both sides of the waist-cross-leg wearing device 8;

[0062] The rear plate 9 is provided with a storage battery.

[0063] like Figure 5As shown, the lifting device includes a square tube frame 19, the top of the square tube frame 19 is provided with anti-slip rubber, and both sides of the square tube frame 19 are provided with a docking tube 20, and the two docking tubes 20 form a high and low dislocation. The stretcher connecting clamp 11 of the front balancer and the stretcher connecting clamp 11 of the rear balancer can be connected to the docking tube 20, which is convenient for manual lifting and carrying, providing convenience.

[0064] A storage box is used to store the front balancer, the rear balancer and the lifting device. The entire box body is made of high-strength engineering plastic material. As long as the box body structure design can accommodate the front balancer, the rear balancer and the lifting device, the equipment can be protected and facilitated for transportation.

[0065] A control system is provided between the front balancer and the rear balancer of the present invention, for example, Figure 11 As shown, the front balancer is equipped with a front main controller, which is electrically connected to the front balancer's battery, the motor between the two-way mover 4 and the slide rail 3, the motor of the reciprocating machine 17 of the electric telescopic rod 202, the motor for controlling the stretcher connecting clamp 11 to rotate 90 degrees, the motor of the two-way motor group 18 of the stretcher connecting clamp 11, and the electric level gauge;

[0066] The rear balancer is equipped with a rear main controller, which is electrically connected to the battery of the rear balancer, the motor between the connecting rod 10 and the slide rail 3, the motor of the reciprocating machine 17 of the electric telescopic rod 202, the motor for controlling the stretcher connecting clamp 11 to rotate 90 degrees, the motor of the bidirectional motor group 18 of the stretcher connecting clamp 11, the laser rangefinder 14, the control handle 5, the electric level meter, etc.

[0067] A wireless transmission module is set between the front main controller and the rear main controller, such as a Bluetooth transmission module is set between the front and rear balancers, which can realize the connection of the control systems of the front and rear balancers.

[0068] Specific use of the present invention:

[0069] 1. The storage box is transported with the transport vehicle. When in use, the storage box is opened, and the front and rear balancers are lifted out through the lifting device and carried together with the stretcher by the stretcher bearer;

[0070] 2. Donning: The front person on the stretcher wears the front balancer, secures the shoulder straps to the shoulders, fastens the waist straps to the waist, and locks the relevant buckles and elastics. The rear person wears the rear balancer, fastens the waist straps to the waist, fastens the hip straps to the hips, and fastens the two leg straps to the legs respectively. Lock the relevant buckles and elastics. The front and rear personnel are now dressed.

[0071] 3. Pairing and connecting the control systems of the front and rear balancers: The rear personnel operate the control handle to start Bluetooth pairing and connect the control systems of the front and rear balancers;

[0072] 4. Stretcher docking: The rear personnel adjust the clamping mode according to the type of stretcher (basket stretcher or double-stick stretcher). Taking the double-stick stretcher as an example, the double-stick stretcher consists of two stretcher tubes and a carrier cloth in the middle. The front and rear balancers need to adjust the stretcher connection clamp 11 to a coaxial position with the stretcher tube, and control the distance between the two stretcher connection clamps 11 to adapt to the distance between the two stretcher tubes.

[0073] The stretcher connecting jaws 11 can be clamped at a position by controlling the angle of the stretcher connecting jaws 11 by controlling the motor at the end of the telescopic inner rod 2022;

[0074] The rear personnel control and adjust the distance between the two stretcher connection clamps 11 on each balancer according to the laser rangefinder;

[0075] After the distance is adjusted, the bidirectional motor group 18 at the stretcher connecting clamp 11 controls the opening and closing of the two arc-shaped clamps 1101 to clamp the stretcher tube;

[0076] The above process completes the control system connection between the front and rear balancers of the present invention and the assembly with the double-stick stretcher, and the device can be used.

[0077] During use, the front and rear balancers enter the system self-test at the same time to match the center of gravity of the stretcher. The rear electric level sends a command to the rear controller to transmit the horizontal plane reference position. After receiving the data, the rear controller controls the rear rotary balancing body, that is, the brushless motor between the connecting rod 10 and the stretcher docking device to perform rotational motion correction at the center of the circle to be consistent with the horizontal plane. The front electric level module sends a command to the front controller to transmit the horizontal plane reference position. After receiving the data, the front controller controls the front rotary balancing body and the brushless motor between the two-way mover 4 and the stretcher docking device to perform rotational motion correction at the center of the circle to be consistent with the horizontal plane. The injured stretcher is balanced along the center of the circle above the head.

[0078] The two people stood up together, and the two-way balancer in the sliding area of ​​the backboard in front began to assist with the motor. The normal stop position was at the waist of the person behind, which was also the reference plane.

[0079] During the descent, the person in front is on a lower level, while the person behind is on a higher level. The front motor's assist stop position is always on the reference plane. If the person in front or behind makes a mistake and deviates, the horizontality of the rotating balancing body is always controlled by the electric level data transmitted by the controller and is not affected.

[0080] When encountering a high handrail in the corridor, it is necessary to raise the stretcher level to pass through. The following is the movement process:

[0081] The rear personnel touch the control handle 15 to control the vertical movement of the stretcher up and down. Specifically, the rear controller sends an electrical signal to control the start of the motor at the slide rail on the rear plate to control the connecting rod. The rear controller sends a Bluetooth signal to the front controller. After receiving the signal, the front controller controls the start of the motor at the slide rail on the front back plate. The vertical movement distances of the front and rear are equal and the speed is equal. When reaching the highest point, the motor stops delivering torque and switches to maintaining. After passing the handrail, the personnel stop controlling the handle 15, and the two-way balancer at the slide rail on the front back plate and the connecting rod at the rear back plate are reset.

[0082] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0083] By those skilled in the art, all electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers should be selected according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working. The detailed connection means are well-known technologies in this field and will not be explained in the electrical control.

[0084] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. An auxiliary device for improving the balance of medical stretcher transportation, characterized in that: include: A front balancer, the front balancer comprising a backpack wearing device (1), a back plate (2) being provided at the rear side of the backpack wearing device (1), a vertical slide rail (3) being provided on the back plate (2), a bidirectional mover (4) being provided on the slide rail (3), a vertical tooth plate (5) being provided in the slide rail (3), gears (7) meshing with the tooth plate (5) being connected at both ends of the bidirectional mover (4) through motors (6), two motors (6) controlling the gears (7) to rotate in opposite directions to realize the lifting and lowering of the bidirectional mover (4), and a stretcher docking device being provided on the side of the bidirectional mover (4) away from the back plate (2); A rear balancer, the rear balancer comprising a waist-span-leg wearing device (8), a rear plate (9) is provided on the rear side of the waist-span-leg wearing device (8), a vertical slide rail (3) is provided on the rear plate (9), the rear plate (9) is also connected to a stretcher docking device at the front position of the waist-span-leg wearing device (8) through a connecting rod (10), a motor (6) is provided at the end of the connecting rod (10) corresponding to the slide rail (3) on the rear plate (9), a gear (7) is provided at the output shaft end of the motor (6), and a gear plate (5) cooperating with the gear (7) is also provided in the slide rail (3) on the rear plate (9); A motor (6) is provided in the middle of the stretcher docking device, and stretcher connection clamps (11) are arranged at both ends. The central axis of the motor (6) of the stretcher docking device at the front balancer is rigidly fixedly connected to the middle of the bidirectional mover (4), and the central axis of the motor (6) of the stretcher docking device at the rear balancer is rigidly fixedly connected to the middle of the front of the connecting rod (10).

2. The auxiliary device for improving the carrying balance of a medical stretcher according to claim 1, characterized in that: The backpack wearable device (1) further comprises two shoulder straps (101), a waist restraint belt (102), and a side restraint belt (103) located above the waist restraint belt (102); the top end of the shoulder strap (101) is connected to the back plate (2), and the bottom end is connected to the waist restraint belt (102); each shoulder strap (101) is provided with an elastic buckle (12); the waist restraint belt (102) is provided with a lock buckle (13) between the two shoulder straps (101); an elastic belt (104) is provided between the two shoulder straps (101) at the front side of the human body; and a lock buckle (13) is provided between the two elastic belts (104).

3. The auxiliary device for improving the carrying balance of a medical stretcher according to claim 1, characterized in that: The waist-cross-leg wearable device (8) comprises a waist restraint (801), a crotch restraint (802) and two leg restraints (803); the rear plate (9) is rigidly fixedly connected to the rear side of the crotch restraint (802); the waist restraint (801) is above the crotch restraint (802); the waist restraint (801) is hinged to the crotch restraint (802) at a position close to the rear plate (9); the leg restraint (803) is below the crotch restraint (802); each leg restraint (803) is hinged to the crotch restraint (802) at a position away from the rear plate (9); The front sides of the waist restraint (801) and the crotch restraint (802) are both provided with buckles (13), and the rear side of the leg restraint (803) is provided with leg restraint belts (804).

4. The auxiliary device for improving the carrying balance of a medical stretcher according to claim 1, characterized in that: The stretcher docking device further comprises a middle motor region (201) for mounting a motor (6), electric telescopic rods (202) are provided on both sides of the middle motor region (201), and the stretcher connection clamp (11) is connected to the electric telescopic rod (202) and can realize 90° rotation; The electric telescopic rod (202) comprises a fixed outer tube (2021) connected to the middle motor region (201), a telescopic inner rod (2022) is arranged inside the fixed outer tube (2021), and a reciprocating machine (17) for controlling the movement of the telescopic inner rod (2022) is arranged between the fixed outer tube (2021) and the telescopic inner rod (2022) bracket; The end of the telescopic inner rod (2022) away from the fixed outer tube (2021) is connected to the stretcher connecting jaws (11) via a motor (6), and the motor (6) controls the stretcher connecting jaws (11) to achieve a 90° rotation.

5. The auxiliary device for improving the carrying balance of a medical stretcher according to claim 4, characterized in that: A laser rangefinder (14) is provided between the bottom sides of the two telescopic inner rods (2022) of each stretcher docking device for measuring the distance between the two stretcher connection clamps (11).

6. The auxiliary device for improving the carrying balance of a medical stretcher according to claim 5, characterized in that: The stretcher connecting jaws (11) comprises two arc-shaped clamps (1101) arranged up and down and a bidirectional motor group (18) for controlling the two clamps (1101) to move closer or farther away, and each arc-shaped clamp (1101) has soft rubber on the inner side.

7. The auxiliary device for improving the carrying balance of a medical stretcher according to claim 6, characterized in that: Control handles (15) are provided on the connecting rod (10) at both sides of the waist-cross-leg wearing device (8).

8. An auxiliary device for improving the carrying balance of a medical stretcher according to any one of claims 1 to 7, characterized in that: The back plate (2) and the rear plate (9) are both provided with storage batteries.

9. An auxiliary device for improving the carrying balance of a medical stretcher according to any one of claims 1 to 7, characterized in that: The waist restraint (801) and the crotch restraint (802) both comprise a front soft rubber and a rear hard plate, a lock buckle (13) being provided on the front soft rubber, and a plurality of spring bodies being provided inside the front soft rubber to provide elastic force on one side.

10. An auxiliary device for improving the carrying balance of a medical stretcher according to any one of claims 1 to 7, characterized in that: A transparent shock-absorbing airbag (105) is provided inside the shoulder strap (101); The inner side of the back plate (2) and the waist restraint (801) close to the waist and back are both provided with polyester fiber sponges that conform to the waist and back curves.

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