Transfer assisting system and medical equipment

Abstract

The utility model provides a transfer assisting system and medical equipment, comprising a handle used for bearing torque applied by a user; the torque sensor is connected with the handle; the driving unit is used for controlling the driving wheels to walk; the input end of the steering mechanism is connected with the handle through a torque transmission mechanism, and the output end of the steering mechanism is connected with the driving unit through a steering transmission mechanism; and the steering booster is in signal connection with the torque sensor, and the steering booster is in driving connection with the steering mechanism so as to increase the torque output by the output end. The transfer assisting system solves the technical problem that in the prior art, the equipment transfer efficiency is low.

Description

Technical Field

[0001] The utility model relates to the technical field of power-assisting structures, in particular to a transport power-assisting system and medical equipment. Background Art

[0002] Medical equipment such as X-ray machines used in the prior art have a large weight and are rarely equipped with power-assist functions, so doctors can only rely on manual pushing to move the equipment when transferring the equipment or fine-tuning its position. When the ground is sloped or soft, the equipment encounters greater resistance, and moving the equipment is particularly laborious. At the same time, when the equipment is turning, it is impossible to flexibly control the turning direction of the equipment, and turning is very laborious, which affects the transportation efficiency of the equipment.

[0003] Therefore, the prior art needs to be further developed. Utility Model Content

[0004] The purpose of the utility model is to overcome the above technical deficiencies and provide a transfer assistance system and medical equipment to solve the technical problem of low equipment transfer efficiency in related technologies.

[0005] In order to achieve the above technical objectives, the utility model adopts the following technical solutions: a transfer assistance system is provided, including: a handle, the handle is used to bear the torque applied by the user; a torque sensor, the torque sensor is connected to the handle; a drive unit, the drive unit is used to control the movement of the drive wheel; a steering mechanism, the input end of the steering mechanism is connected to the handle through a torque transmission mechanism, and the output end of the steering mechanism is connected to the drive unit through a steering transmission mechanism; a steering booster, the steering booster is connected to the torque sensor signal, and the steering booster is connected to the steering mechanism drive to increase the torque output at the output end.

[0006] Furthermore, the steering mechanism includes a first rotating shaft, an input end of the first rotating shaft is connected to a first steering sprocket, an output end of the first rotating shaft is connected to a second steering sprocket, and the first steering sprocket and the second steering sprocket are arranged at an interval.

[0007] Furthermore, the steering booster includes: a boost motor; a first boost pulley, which is drivingly connected to the output shaft of the boost motor; a second boost pulley, which is fixed on the first rotating shaft and connected to the first boost pulley through a boost synchronous belt.

[0008] Furthermore, the driving unit includes: a mounting bracket, on which a driving wheel is mounted; a pushing motor, which is fixedly arranged on the mounting bracket and is drivingly connected to the driving wheel; a steering shaft, which is fixedly connected to the mounting bracket; and a pushing sensor, which is signal-connected to the pushing motor.

[0009] Furthermore, the steering transmission mechanism includes: a steering transmission sprocket, which is fixedly connected to the steering shaft; and a steering transmission chain, which is respectively connected to the steering transmission sprocket and the second steering sprocket.

[0010] Furthermore, the transfer assistance system includes a mounting seat, on which a steering shaft is mounted, and the steering shaft is rotatably connected to the mounting seat; the driving wheels include two, and the driving units and the steering transmission sprockets each include two accordingly, and the two driving units are spaced apart on the mounting seat.

[0011] Furthermore, the torque transmission mechanism includes: a first torque transmission mechanism, the first torque transmission mechanism is connected to the handle; a second torque transmission mechanism, the second torque transmission mechanism is connected to the input end of the steering mechanism; a second rotating shaft, one end of the second rotating shaft is connected to the first torque transmission mechanism, and the other end of the second rotating shaft is connected to the second torque transmission mechanism.

[0012] Further, the first torque transmission mechanism includes: a first torque transmission sprocket, which is connected to the handle through a torque sensor; a second torque transmission sprocket, which is connected to the second rotating shaft; a first torque transmission chain, which is respectively connected to the first torque transmission sprocket and the second torque transmission sprocket; the second torque transmission mechanism includes: a third torque transmission sprocket, which is connected to the second rotating shaft; and a second torque transmission chain, which is respectively connected to the third torque transmission sprocket and the input end of the steering mechanism.

[0013] Furthermore, the transfer assistance system includes a connecting plate, on which a second rotating shaft is movably connected, and the handle is rotatably connected to the connecting plate.

[0014] A medical device, comprising a transfer assistance system, wherein the transfer assistance system is the above-mentioned transfer assistance system.

[0015] Beneficial effects:

[0016] 1. By setting up a drive unit, the drive unit can control the movement of the drive wheel, provide pushing assistance for the equipment, and reduce the user's pushing force; by setting up a steering booster, the torque applied to the handle by the user is monitored by a torque sensor. When the user turns the handle, the control system obtains the user's steering intention through the torque sensor, controls the steering booster to start assisting, increases the torque output from the output end of the steering mechanism, thereby reducing the steering torque applied by the user, providing steering assistance for the drive wheel, driving the drive unit and the drive wheel to complete the steering, and providing assistance to the user in adjusting the equipment posture and equipment position, etc., which greatly reduces the labor intensity, improves the equipment transportation efficiency, and solves the technical problem of low equipment transportation efficiency in related technologies.

[0017] 2. The transfer assistance system in this embodiment is applied to medical equipment, which provides a structural scheme and control system for pushing assistance and steering assistance for the medical equipment, and provides transfer assistance during the doctor's operation and transportation of the equipment, thereby reducing work intensity and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the transfer assistance system adopted in the embodiment of the utility model;

[0019] Figure 2 It is an exploded view of the transfer assistance system adopted in the embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the transfer assistance system adopted in the embodiment of the utility model from another perspective;

[0021] Figure 4 It is a structural schematic diagram of the steering transmission mechanism of the transfer assistance system adopted in the embodiment of the utility model;

[0022] Figure 5 It is a structural schematic diagram of a driving unit of a transfer assistance system adopted in an embodiment of the utility model.

[0023] The above drawings include the following reference numerals:

[0024] 1. Handle; 2. Torque sensor; 3. Drive unit; 30. Drive wheel; 31. Mounting bracket; 32. Push motor; 33. Steering shaft; 4. Steering mechanism; 41. First rotating shaft; 42. First steering sprocket; 43. Second steering sprocket; 5. Torque transmission mechanism; 51. First torque transmission mechanism; 511. First torque transmission sprocket; 512. Second torque transmission sprocket; 513. First torque transmission chain; 52. Second torque transmission mechanism; 521. Third torque transmission sprocket; 522. Second torque transmission chain; 53. Second rotating shaft; 6. Steering transmission mechanism; 61. Steering transmission sprocket; 62. Steering transmission chain; 7. Steering booster; 71. Power-boosting motor; 72. First power-boosting pulley; 73. Second power-boosting pulley; 74. Power-boosting synchronous belt; 81. Mounting seat; 82. Connecting plate. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0026] According to the embodiment of the utility model, a transfer assistance system and medical equipment are provided. Figures 1 to 5 , including: a handle 1, which is used to carry the torque applied by the user; a torque sensor 2, which is connected to the handle 1; a drive unit 3, which is used to control the driving wheel 30 to move; a steering mechanism 4, the input end of the steering mechanism 4 is connected to the handle 1 through a torque transmission mechanism 5, and the output end of the steering mechanism 4 is connected to the drive unit 3 through a steering transmission mechanism 6; a steering booster 7, which is connected to the torque sensor 2 signal, and the steering booster 7 is connected to the steering mechanism 4 to increase the torque output at the output end.

[0027] By setting up the driving unit 3, the driving unit 3 can control the driving wheel 30 to move, provide pushing assistance for the equipment, and reduce the user's pushing force; by setting up the steering booster 7, the torque applied to the handle 1 by the user is monitored through the torque sensor 2. When the user turns the handle 1, the control system obtains the user's steering intention through the torque sensor 2, and controls the steering booster 7 to start assisting, increasing the torque output from the output end of the steering mechanism 4, thereby reducing the steering torque applied by the user, providing steering assistance for the driving wheel 30, driving the driving unit 3 and the driving wheel 30 to complete the steering, and providing assistance to the user in adjusting the equipment posture and equipment position, etc., which greatly reduces the labor intensity, improves the transportation efficiency of the equipment, and solves the technical problem of low equipment transportation efficiency in related technologies.

[0028] Specifically, the input end of the torque sensor 2 is rigidly connected to the handle 1 , and the output end of the torque sensor 2 is rigidly connected to the first torque transfer sprocket 511 , so that the magnitude and direction of the torque from the handle 1 can be monitored in real time.

[0029] When the user turns the handle 1, the friction between the driving wheel 30 and the ground generates reverse resistance. The torque sensor 2 can detect the size and direction of the resistance torque. After transmitting the sensing signal to the control system, the control system can calculate the user's steering intention and determine the direction of the power assistance.

[0030] It can be understood that the torque transmission mechanism 5 and the steering transmission mechanism 6 can be any transmission structure form such as chain transmission, belt transmission, gear transmission, wire rope transmission, etc.

[0031] In the transfer assistance system of this embodiment, see Figure 2The steering mechanism 4 includes a first rotating shaft 41, the input end of the first rotating shaft 41 is connected to a first steering sprocket 42, the output end of the first rotating shaft 41 is connected to a second steering sprocket 43, and the first steering sprocket 42 and the second steering sprocket 43 are arranged at intervals. Through the above arrangement, the steering mechanism 4 transmits the steering torque from the handle 1 to the steering transmission mechanism 6, the torque transmission mechanism 5 is connected to the first steering sprocket 42 by power, the first steering sprocket 42 drives the second steering sprocket 43 to rotate through the first rotating shaft 41, the second steering sprocket 43 is connected to the steering transmission mechanism 6 by power, and the steering transmission mechanism 6 drives the driving unit 3 and the driving wheel 30 to rotate to complete the steering.

[0032] In the transfer assistance system of this embodiment, see Figure 2 The steering booster 7 includes: a boost motor 71; a first boost pulley 72, which is drivingly connected to the output shaft of the boost motor 71; and a second boost pulley 73, which is fixedly arranged on the first rotating shaft 41, and is connected to the first boost pulley 72 through a boost synchronous belt 74. Through the above arrangement, after receiving the sensing signal transmitted by the torque sensor 2, the control system controls the boost motor 71 to rotate, and the boost motor 71 drives the first boost pulley 72 to rotate, and the first boost pulley 72 drives the second boost pulley 73 to rotate through the boost synchronous belt 74, thereby transmitting the boost torque to the first rotating shaft 41. The steering torque and boost torque applied by the user can simultaneously rotate the first rotating shaft 41, and the first rotating shaft 41 drives the second steering sprocket 43 to rotate, thereby achieving steering assistance.

[0033] In the transfer assistance system of this embodiment, see Figure 5 The driving unit 3 includes: a mounting bracket 31, on which a driving wheel 30 is mounted; a pushing motor 32, which is fixedly mounted on the mounting bracket 31 and is drivingly connected to the driving wheel 30; a steering shaft 33, which is fixedly connected to the mounting bracket 31; and a pushing sensor, which is signal-connected to the pushing motor 32. Through the above arrangement, when the pushing sensor senses the pushing force of the user, the control system controls the pushing motor 32 to rotate, and the pushing torque provided by the pushing motor 32 and the pushing force of the user can simultaneously control the driving wheel 30 to move; in addition, through the above arrangement, the steering shaft 33, the mounting bracket 31, and the pushing motor 32 are integrally connected, and the driving wheel 30 can be driven to turn by driving the steering shaft 33 to rotate.

[0034] Specifically, the driving unit 3 includes a plurality of reduction gears, which transmit the torque output by the propulsion motor 32 to the driving wheel 30 after reduction conversion.

[0035] Specifically, the pushing sensor is arranged at the pushing handle of the medical device to sense and collect the pushing and pulling force of the human hand, and output the collected signal to the control system.

[0036] In the transfer assistance system of this embodiment, see Figure 4 The steering transmission mechanism 6 includes: a steering transmission sprocket 61, which is fixedly connected to the steering shaft 33; and a steering transmission chain 62, which is respectively connected to the steering transmission sprocket 61 and the second steering sprocket 43. Through the above arrangement, when the second steering sprocket 43 rotates, the steering transmission chain 62 drives the steering transmission sprocket 61 to rotate, thereby driving the steering shaft 33 to rotate, so that the driving wheel 30 is turned.

[0037] Specifically, the steering transmission mechanism 6 includes a tensioning mechanism to adjust the tightness of the steering transmission chain 62 .

[0038] In the transfer assistance system of this embodiment, see Figure 1 The transfer assistance system includes a mounting seat 81, on which a steering shaft 33 is mounted, and the steering shaft 33 is rotatably connected to the mounting seat 81; the driving wheel 30 includes two, and the driving unit 3 and the steering transmission sprocket 61 each include two accordingly, and the two driving units 3 are spaced apart on the mounting seat 81.

[0039] Specifically, the mounting seat 81 is connected to the device body, and the mounting seat 81 is used to install and fix the driving wheel 30. The steering shaft 33 can be installed on the mounting seat 81 through a bearing.

[0040] It is understandable that the number of driving wheels 30 can be increased or decreased according to actual needs, and the number of driving units 3 and steering transmission sprockets 61 will also be adjusted accordingly.

[0041] In some embodiments, the device includes two front and rear groups of driving wheels, and the steering transmission mechanism 6 is also correspondingly provided with two front and rear groups, which are respectively connected to the two groups of driving wheels by power. The front and rear groups of steering transmission mechanisms 6 can be connected by power through transmission mechanisms such as gear transmission, chain and sprocket transmission, and the driving wheels on the entire device are driven to steer through a group of steering mechanisms and a steering booster.

[0042] In the transfer assistance system of this embodiment, see Figure 2The torque transmission mechanism 5 includes: a first torque transmission mechanism 51, which is connected to the handle 1; a second torque transmission mechanism 52, which is connected to the input end of the steering mechanism 4; and a second rotating shaft 53, one end of which is connected to the first torque transmission mechanism 51, and the other end of which is connected to the second torque transmission mechanism 52. Through the above arrangement, after the handle 1 transmits the torque to the first torque transmission mechanism 51, the first torque transmission mechanism 51 drives the second rotating shaft 53 to rotate, and the second rotating shaft 53 transmits the torque to the second torque transmission mechanism 52, and then transmits the torque to the input end of the steering mechanism 4 through the second torque transmission mechanism 52.

[0043] Specifically, the first torque transmission mechanism 51 and the second torque transmission mechanism 52 are arranged at intervals, and the first torque transmission mechanism 51 is flush with the height of a human hand. By setting a certain height difference between the second torque transmission mechanism 52 and the first torque transmission mechanism 51, the second torque transmission mechanism 52 can transmit the torque to the driving wheel 30 located on the ground, which is convenient for the user to operate the handle 1 and improves the user's experience.

[0044] In the transfer assistance system of this embodiment, see Figure 2 The first torque transmission mechanism 51 includes: a first torque transmission sprocket 511, which is connected to the handle 1 through the torque sensor 2; a second torque transmission sprocket 512, which is connected to the second rotating shaft 53; a first torque transmission chain 513, which is respectively connected to the first torque transmission sprocket 511 and the second torque transmission sprocket 512; the second torque transmission mechanism 52 includes: a third torque transmission sprocket 521, which is connected to the second rotating shaft 53; a second torque transmission chain 522, which is respectively connected to the third torque transmission sprocket 521 and the input end of the steering mechanism 4.

[0045] Through the above arrangement, after the human hand turns the handle 1, the handle 1 drives the first torque transfer sprocket 511 to rotate, and drives the second torque transfer sprocket 512 to rotate through the first torque transfer chain 513, and the second torque transfer sprocket 512 drives the second rotating shaft 53 to rotate, and the second rotating shaft 53 drives the third torque transfer sprocket 521 to rotate, and drives the first steering sprocket 42 to rotate through the second torque transfer chain 522, thereby transmitting the torque applied by the human hand to the input end of the steering mechanism 4.

[0046] It is understandable that when the equipment is powered off and the steering booster 7 and the drive unit 3 are unable to provide assistance, the steering torque can be directly transmitted through mechanical mechanisms such as the steering mechanism 4 and the torque transmission mechanism 5 to drive the drive wheel 30 to turn, or the equipment can be directly pushed to make the drive wheel 30 rotate and move, thereby completing the manual transfer equipment.

[0047] In the transfer assistance system of this embodiment, see Figure 2 The transfer assistance system includes a connecting plate 82, on which a second rotating shaft 53 is movably connected, and the handle 1 is rotatably connected to the connecting plate 82.

[0048] Specifically, a mounting hole is provided on the connecting plate 82 , a bearing is installed in the mounting hole, and the second rotating shaft 53 and the handle 1 are fixed on the connecting plate 82 through the bearing.

[0049] In the medical device of this embodiment, see Figure 1 The medical device includes a transfer assistance system, and the transfer assistance system is the above-mentioned transfer assistance system.

[0050] It should be noted that the pushing handle and the handle 1 are both arranged on the outside of the medical device. Preferably, the setting height of the pushing handle and the handle 1 is flush with the height of a human hand, which is convenient for the user to operate and transport. The driving wheel 30 is located at the bottom of the medical device. The setting position of the mounting seat 81 and the first torque transmission mechanism 51 and the setting position of the second torque transmission mechanism 52 can be flexibly adjusted according to the spatial layout inside the device. The transfer assistance system in this embodiment has a simple structure and can be combined with medical equipment in the prior art such as X-ray machines, etc. It has flexibility and adaptability, which improves the versatility of the transfer assistance system in this embodiment.

[0051] It can be understood that the transport assistance system in this embodiment can be used not only in medical equipment, but also in other wheel-type equipment that requires assistance.

[0052] Specifically, the medical device includes a control system for receiving sensor signals, signal logic processing, and control signal output, and the control system is connected to the torque sensor 2 and the push sensor signal.

[0053] The medical device includes a mode switching button for switching between power-assist mode and drive mode. In the power-assist mode, the steering booster 7 is controlled to provide steering assistance and the drive unit 3 is controlled to provide push assistance by sensing the user's steering torque and propulsion torque. In the drive mode, the propulsion motor 32 remains in a continuously turned-on state, and the device moves forward automatically without user intervention and control.

[0054] When the user pushes the pushing handle, the pushing sensor collects the thrust value of the human hand, and the pushing sensor signal is transmitted to the control system. The control system determines the current control mode and outputs a control signal. When the device is in the power-assist mode, the pushing motor 32 rotates, and the driving unit 3 can control the driving wheel 30 to move. The actual pushing force applied by the user is reduced, thereby achieving pushing assistance.

[0055] When the user turns the handle 1, the control system receives the sensing signal from the torque sensor 2, so that the control system obtains the user's steering intention, determines the power assist direction, and sends out a command signal. The power assist motor 71 outputs a power assist torque according to the command. The power assist torque offsets part of the friction force, and the steering torque applied by the user becomes smaller to drive the driving wheel 30 to turn and achieve steering assistance. When the user stops turning the handle 1, there is no sensing signal input from the torque sensor 2, and the steering booster 7 does not work.

[0056] The transfer assistance system in this embodiment is applied to medical equipment, which provides a structural scheme and control system for pushing assistance and steering assistance for the medical equipment, and provides transfer assistance during the doctor's operation and transfer of the equipment, thereby reducing work intensity and improving work efficiency.

[0057] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0058] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0059] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0060] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0061] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A transport assistance system, characterized in that: include: A handle (1), the handle (1) being used to bear a torque applied by a user; A torque sensor (2), the torque sensor (2) being connected to the handle (1); A driving unit (3), the driving unit (3) being used to control the driving wheel (30) to move; A steering mechanism (4), wherein an input end of the steering mechanism (4) is connected to the handle (1) via a torque transmission mechanism (5), and an output end of the steering mechanism (4) is connected to the drive unit (3) via a steering transmission mechanism (6); A steering booster (7), the steering booster (7) being connected to the torque sensor (2) in signal communication, and the steering booster (7) being drivingly connected to the steering mechanism (4) to increase the torque outputted by the output end.

2. The transfer assistance system according to claim 1, characterized in that: The steering mechanism (4) comprises a first rotating shaft (41), the input end of the first rotating shaft (41) is connected to a first steering sprocket (42), the output end of the first rotating shaft (41) is connected to a second steering sprocket (43), and the first steering sprocket (42) and the second steering sprocket (43) are arranged at an interval.

3. The transfer assistance system according to claim 2, characterized in that: The steering booster (7) comprises: A booster motor (71); A first power-assisting pulley (72), the first power-assisting pulley (72) being drivingly connected to an output shaft of the power-assisting motor (71); A second power-assisting pulley (73), wherein the second power-assisting pulley (73) is fixedly arranged on the first rotating shaft (41), and the second power-assisting pulley (73) is connected to the first power-assisting pulley (72) via a power-assisting synchronous belt (74).

4. The transfer assistance system according to claim 2, characterized in that: The driving unit (3) comprises: A mounting bracket (31), wherein the driving wheel (30) is mounted on the mounting bracket (31); A pushing motor (32), wherein the pushing motor (32) is fixedly mounted on the mounting bracket (31), and the pushing motor (32) is drivingly connected to the driving wheel (30); A steering shaft (33), wherein the steering shaft (33) is fixedly connected to the mounting bracket (31); A pushing sensor is connected to the pushing motor (32) by signal.

5. The transfer assistance system according to claim 4, characterized in that: The steering transmission mechanism (6) comprises: A steering transmission sprocket (61), wherein the steering transmission sprocket (61) is fixedly connected to the steering shaft (33); The steering transmission chain (62) and the steering transmission sprocket (61) are respectively connected to the steering transmission sprocket (61) and the second steering sprocket (43).

6. The transfer assistance system according to claim 5, characterized in that: The transfer assistance system comprises a mounting seat (81), the steering shaft (33) is mounted on the mounting seat (81), and the steering shaft (33) is rotatably connected to the mounting seat (81); The driving wheels (30) include two, the driving units (3) and the steering transmission sprockets (61) each include two correspondingly, and the two driving units (3) are arranged on the mounting seat (81) at intervals.

7. The transfer assistance system according to claim 1, characterized in that: The torque transmission mechanism (5) comprises: A first torque transmission mechanism (51), wherein the first torque transmission mechanism (51) is connected to the handle (1); a second torque transmission mechanism (52), the second torque transmission mechanism (52) being connected to an input end of the steering mechanism (4); A second rotating shaft (53), one end of the second rotating shaft (53) is connected to the first torque transmission mechanism (51), and the other end of the second rotating shaft (53) is connected to the second torque transmission mechanism (52).

8. The transfer assistance system according to claim 7, characterized in that: The first torque transmission mechanism (51) comprises: a first torque transmission sprocket (511), wherein the first torque transmission sprocket (511) is connected to the handle (1) via the torque sensor (2); A second torque transmission sprocket (512), wherein the second torque transmission sprocket (512) is connected to the second rotating shaft (53); a first torque transmission chain (513), wherein the first torque transmission chain (513) is connected to the first torque transmission sprocket (511) and the second torque transmission sprocket (512) respectively; The second torque transmission mechanism (52) comprises: a third torque transmission sprocket (521), wherein the third torque transmission sprocket (521) is connected to the second rotating shaft (53); A second torque transmission chain (522), wherein the second torque transmission chain (522) is respectively connected to the third torque transmission sprocket (521) and the input end of the steering mechanism (4).

9. The transfer assistance system according to claim 7, characterized in that: The transfer assistance system comprises a connecting plate (82), the connecting plate (82) is movably connected to the second rotating shaft (53), and the handle (1) is rotatably connected to the connecting plate (82).

10. A medical device, characterized in that: The medical device comprises a transport assistance system, and the transport assistance system is the transport assistance system according to any one of claims 1 to 9.

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