Orthopedic lower limb rehabilitation training wheelchair

Abstract

The invention discloses an orthopaedic lower limb rehabilitation training wheelchair, which comprises a frame, a cushion plate and a back cushion plate which are used for forming the wheelchair, a limb swinging structure for performing rehabilitation training on legs of a patient is arranged on the frame, the limb swinging structure comprises two groups of pedal plates arranged below the cushion plate, a mounting plate is fixedly connected to the cushion plate, and the pedal plates are fixedly connected to the mounting plate. A transverse pin is arranged on the mounting plate in a fixed-axis rotation mode and fixedly connected with the pedal plate, a knee bending assembly for driving the transverse pin to rotate in a reciprocating mode in the vertical direction is arranged on the mounting plate, a waist cushion air bag used for supporting the waist of a patient is arranged between the cushion plate and the back cushion plate, and a composite supporting assembly for adjusting the air amount in the waist cushion air bag is arranged on the frame. By arranging the limb swinging structure, transferring and rehabilitation training of a patient are synchronously carried out, in the transferring process of the patient, knee joints and leg adductor groups can be exercised at the same time through alternate operation of the knee bending assembly and the inner supporting assembly, and the defect that conventional rehabilitation equipment cannot continue training in the transferring stage is overcome.

Description

Technical Field

[0001] The invention relates to the technical field of rehabilitation training wheelchairs, in particular to an orthopedic lower limb rehabilitation training wheelchair. Background Art

[0002] Patients with impaired lower limb function, such as those suffering from stroke, fracture, postoperative rehabilitation, etc., need to gradually restore lower limb muscle strength, sense of balance and walking ability through scientific rehabilitation training. Currently, common rehabilitation methods include manual assisted training and traditional lower limb rehabilitation equipment. Rehabilitation training can promote bone healing, restore lower limb function and prevent long-term functional disorders for fracture patients.

[0003] Chinese patent (publication number: CN117815005A), the solution specifically includes a chassis frame, a seat back folding mechanism, a suspension mechanism, a power mechanism, a rocker mechanism and a flip mechanism. The posture change of the seat and the backrest is achieved through the electric push rod in the power mechanism. The foldable suspension mechanism can assist patients in standing and walking rehabilitation training while also being folded to reduce the space occupied, solving the problem of the current rehabilitation equipment being too large, avoiding the need for patients to be accompanied by personnel for assistance during rehabilitation training, especially lower limb walking rehabilitation training, and the wheelchair has a simple structure and strong stability.

[0004] When the wheelchair in the above patent is in use, the suspension mechanism is used to assist the patient to stand up so as to achieve the effect of lower limb rehabilitation training. The wheelchair is mainly suitable for daily assistance for patients with walking difficulties. However, in the existing application scenarios, the suspension mechanism cannot be operated synchronously during the patient's transfer process, which makes it difficult to transfer the patient and conduct rehabilitation training at the same time. This limitation is particularly obvious during the patient's leg fracture rehabilitation period, because during the daily use of the wheelchair, it is difficult for the patient to perform lower limb rehabilitation training simultaneously, which affects the rehabilitation effect. Therefore, an orthopedic lower limb rehabilitation training wheelchair is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an orthopedic lower limb rehabilitation training wheelchair, which has the advantage of realizing simultaneous patient transfer and rehabilitation training, and solves the problem that it is difficult for patients to perform lower limb rehabilitation training simultaneously, thereby affecting the rehabilitation effect.

[0006] To achieve the above object, the present invention provides the following technical solutions: an orthopedic lower limb rehabilitation training wheelchair, comprising a frame, a seat cushion plate and a back cushion plate for constituting the wheelchair, wherein the frame is provided with a swing limb structure for performing rehabilitation training on the patient's legs; The swing limb structure comprises two groups of foot pedals arranged below the seat cushion, a mounting plate is fixedly connected to the seat cushion, a transverse pin is fixedly rotated on the mounting plate, the transverse pin is fixedly connected to the foot pedal, and a knee bending assembly is arranged on the mounting plate to drive the transverse pin to reciprocate in the vertical direction; A lumbar cushion airbag for supporting the patient's waist is provided between the seat cushion plate and the back cushion plate, the lumbar cushion airbag is fixedly connected to the back cushion plate, and a re-supporting component for adjusting the amount of gas in the lumbar cushion airbag is provided on the frame; The lower surface of the cushion plate is fixedly connected to an inner frame, and the inner frame is provided with two groups of pressure plates for supporting the inner thighs of the patient on one side facing the foot pedal, and the cushion plate is provided with an inner support component for driving the two groups of pressure plates to move synchronously toward or away from each other in the horizontal direction.

[0007] Preferably, the knee flexion assembly includes two groups of swing seats that rotate on a fixed axis on a mounting plate, a horizontal side of the swing seat is provided with a co-positioning plate, the co-positioning plate is fixedly sleeved on a transverse pin, a locating pin is fixedly connected to the co-positioning plate on one side of the swing seat, and a locating groove is provided on the swing seat for the locating pin to slide and connect.

[0008] Preferably, the mounting plate is provided with an active disk which can rotate freely in the vertical direction, and the active disk rotates on the mounting plate with a fixed axis, a driven disk is coaxially fixed on the swing seat, a rocker rod is provided on the driven disk, and both ends of the rocker rod rotate on the active disk and the driven disk with a fixed axis respectively.

[0009] Preferably, the diameter of the driving disk is smaller than the diameter of the driven disk.

[0010] Preferably, the re-supporting assembly comprises a traverse block disposed below the cushion plate and reciprocating in the horizontal direction, the cushion plate is provided with a transverse slide groove for sliding connection of the traverse block, and a guide column is fixedly connected to the traverse block; The end of the guide column away from the lateral displacement seat is fixedly connected with a piston plate, and the frame is fixedly connected with an air blocking cylinder which is in gas communication with the waist cushion airbag, and the outer peripheral surface of the piston plate is in sliding contact with the inner wall of the air blocking cylinder.

[0011] Preferably, the mounting plate is provided with a horizontal rod that can rotate freely in the horizontal direction and is transmission-connected to the active disk, a lateral moving seat is fixedly connected to the side of the lateral moving block facing the horizontal rod, a limit pin is fixedly connected to the side of the horizontal rod facing the lateral moving seat, and a limit groove is provided on the lateral moving seat for the limit pin to slide and connect.

[0012] Preferably, the inner support assembly includes a horizontal push rod arranged on the inner frame, one end of the guide column away from the air blocking cylinder slides through the inner frame and is fixedly connected to the horizontal push rod, and two sets of rectangular seats are slidably sleeved on the horizontal push rod, and upper connecting rods and lower connecting rods are respectively arranged on vertical sides of the rectangular seats; The two ends of the lower connecting rod are respectively fixedly rotated on the inner frame and the rectangular seat, the inner frame is provided with an L-shaped rod and a slot body for the L-shaped rod to slide horizontally through, and the two ends of the lower connecting rod are respectively fixedly rotated on the L-shaped rod and the rectangular seat; The pressing plate is arranged on an end of the L-shaped rod away from the inner frame.

[0013] Preferably, a sleeve rod is provided at one end of the L-shaped rod away from the inner frame, and two grooves for horizontal sliding connection of the L-shaped rod are provided on the sleeve rod, and the pressure plate rotates on the sleeve rod on a fixed axis.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention realizes the synchronization of patient transfer and rehabilitation training by setting up a swinging limb structure. During the transfer process, the patient can exercise the knee joint and the leg adductor muscles simultaneously by alternating the operation of the knee flexion component and the inner support component, avoiding the defect that conventional rehabilitation equipment cannot continue training during the transfer stage. This design not only improves the rehabilitation efficiency, but also reduces the operation steps and time of the patient in the rehabilitation process, making the rehabilitation process more consistent and efficient. At the same time, through the synchronous transfer and training operations, a more stable rehabilitation environment can be provided for the patient, avoiding potential injuries or training interruptions caused by discontinuous movements.

[0015] 2. The present invention sets a knee flexion component to make the foot pedal swing back and forth in the vertical direction. This design can effectively promote the patient's knee flexion and extension movement, maintain the flexibility of the joint, and exercise the thigh and calf muscle groups through continuous knee flexion and extension movements. This function is particularly important in the early and middle stages of fracture rehabilitation because it can prevent joint stiffness while enhancing leg muscle strength and promoting the patient's gradual recovery of walking ability. Especially when it is difficult for the patient to perform drastic training, the swinging movement of the device can provide the patient with a gentle training method and achieve functional recovery without adding extra burden. Through this progressive rehabilitation training, the rehabilitation period can be effectively shortened and the patient's independent activity ability and quality of life can be improved.

[0016] 3. The present invention provides an adjustable lumbar support structure by arranging a lumbar cushion airbag and a support component. By adjusting the amount of gas in the lumbar cushion airbag, the lumbar support force can be adjusted in real time during the patient's leg lifting training, which helps to maintain a good spinal alignment, reduce the load on the waist caused by unstable posture, and avoid lumbar discomfort or injury in the patient during the rehabilitation process. This design not only helps to reduce the patient's lumbar fatigue caused by long-term training, but also provides better stability for the pelvis and spine, further improving the overall rehabilitation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the part where the transverse pin of the present invention is located; Figure 3 This is a schematic diagram of the components where the pressure plate of the present invention is located; Figure 4 It is a schematic diagram of several parts of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the components where the swing seat of the present invention is located; Figure 7 This is a schematic diagram of the components where the L-shaped rod of the present invention is located; Figure 8 It is a schematic diagram of the components where the lateral shift seat is located in the present invention.

[0018] In the figure: 1. frame; 2. seat plate; 3. backrest plate; 4. lumbar airbag; 5. mounting plate; 6. swing seat; 7. positioning pin; 8. positioning slot; 9. same position plate; 10. transverse pin; 11. foot pedal; 12. rocker arm; 13. driving plate; 14. driven plate; 15. inner frame; 16. guide column; 17. push rod; 18. rectangular seat; 19. upper connecting rod; 20. lower connecting rod; 21. L-shaped rod; 22. sleeve rod; 23. pressure plate; 24. transverse block; 25. transverse shift seat; 26. horizontal rod; 27. limit pin; 28. limit slot; 29. ​​piston plate; 30. air block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figures 1 to 8 The present invention provides a technical solution: an orthopedic lower limb rehabilitation training wheelchair, comprising a frame 1, a seat cushion plate 2 and a back cushion plate 3 for constituting the wheelchair, wherein the frame 1 is provided with a swing limb structure for performing rehabilitation training on the patient's legs; The swing limb structure includes two groups of foot pedals 11 arranged below the seat cushion 2, a mounting plate 5 is fixedly connected to the seat cushion 2, a transverse pin 10 is fixedly rotated on the mounting plate 5, the transverse pin 10 is fixedly connected to the foot pedal 11, and a knee flexion component is provided on the mounting plate 5 to drive the transverse pin 10 to reciprocate in the vertical direction; A lumbar cushion airbag 4 for supporting the patient's waist is provided between the seat cushion plate 2 and the back cushion plate 3. The lumbar cushion airbag 4 is fixedly connected to the back cushion plate 3. A re-supporting component for adjusting the amount of gas in the lumbar cushion airbag 4 is provided on the frame 1. The lower surface of the cushion plate 2 is fixedly connected to an inner frame 15, and the inner frame 15 is provided with two groups of pressure plates 23 for supporting the inner sides of the patient's thighs on one side facing the foot pedal 11, and the cushion plate 2 is provided with an inner support component that drives the two groups of pressure plates 23 to move synchronously toward or away from each other in the horizontal direction.

[0021] like Figure 1-Figure 4 As shown, when a fracture patient uses the wheelchair, the patient sits on the seat cushion 2, and the patient's back rests on the back cushion 3. At this time, the patient's waist is at the position corresponding to the waist cushion airbag 4, and the inflated waist cushion airbag 4 supports the patient's waist to prevent fatigue caused by the patient's waist being suspended in the air.

[0022] At the same time, when the wheelchair is moving, the patient's feet are placed on the two sets of foot pedals 11. Driven by the knee flexion component, the two sets of foot pedals 11 can be driven to swing back and forth in the vertical direction by driving the transverse pin 10, thereby driving the patient's legs to be repeatedly lifted and lowered, thereby promoting knee flexion and extension, maintaining joint flexibility, and preventing joint stiffness. Through continuous knee flexion and extension exercises, the thigh and calf muscle strength can be effectively enhanced, helping the patient gradually recover the ability to walk.

[0023] At the same time, the inner support component and the knee flexion component are operated alternately. When the patient uses the wheelchair, by adjusting the positions of the two groups of pressure plates 23, the two groups of pressure plates 23 are located on the inner side of the patient's thighs, and the two groups of pressure plates 23 are respectively in contact with one group of the patient's legs. Driven by the inner support component, the two groups of pressure plates 23 can move synchronously toward or away from each other in the horizontal direction. Therefore, when the two groups of pressure plates 23 move away from each other, the patient's thighs can be separated, and the patient can freely control the closing of the legs. In actual use, a restraint belt for binding and fixing the patient's legs can also be set on the pressure plate 23, so that the patient's legs can be brought together through the relative movement of the two groups of pressure plates 23.

[0024] Among them, the inner support component can drive the patient's legs to open and close repeatedly, thereby exercising the patient's adductor muscles, thereby improving leg strength, and combined with the repeated opening and closing of the legs, the muscles at the connection between the pelvis and thighs are strengthened, which helps to improve the overall stability of the pelvis. At the same time, when the patient's legs are repeatedly opened and closed, the blood circulation in the legs can be promoted through continuous muscle contraction and relaxation. Good blood circulation can not only accelerate the excretion of metabolic waste, but also promote tissue repair and reduce the risk of swelling and congestion.

[0025] It should be noted that, in actual use, the support component and the knee flexion component are operated synchronously. When the patient's legs are lifted to a certain height along with the foot pedal 11, the patient's waist is prone to generate additional load due to the change in the center of gravity of the body. By increasing the supporting force of the lumbar cushion airbag 4, additional support is provided for the waist, which helps to maintain a good spinal alignment and avoid lumbar discomfort or injury caused by unstable posture when the patient raises his legs. At the same time, by repeatedly changing the amount of gas in the lumbar cushion airbag 4, the support strength and comfort can be adjusted in real time to adapt to different activities and static states, thereby improving overall comfort.

[0026] In one of the more preferred embodiments, the knee flexion assembly includes two sets of swing seats 6 that rotate on a fixed axis on a mounting plate 5, a horizontal side of the swing seat 6 is provided with a positioning plate 9, the positioning plate 9 is fixedly sleeved on a transverse pin 10, a side of the positioning plate 9 facing the swing seat 6 is fixedly connected with a positioning pin 7, and a positioning groove 8 for the positioning pin 7 to be slidably connected is opened on the swing seat 6.

[0027] The mounting plate 5 is provided with an active disk 13 which can rotate freely in the vertical direction, and the active disk 13 rotates on the mounting plate 5 with a fixed axis. A driven disk 14 is coaxially fixed on the swing seat 6, and a swing rod 12 is provided on the driven disk 14. The two ends of the swing rod 12 rotate on the active disk 13 and the driven disk 14 with a fixed axis respectively.

[0028] The diameter of the driving disc 13 is smaller than the diameter of the driven disc 14 .

[0029] like Figure 2-Figure 6 As shown, when the swing seat 6 swings freely in the vertical direction, the positioning groove 8 provided thereon can drive the positioning pin 7 sliding in the positioning groove 8 to swing, and then drive the transverse pin 10 to swing to a certain angle through the isotropic plate 9. At the same time, two groups of foot pedals 11 supporting the feet are fixedly provided on the transverse pin 10, and then the two groups of foot pedals 11 can be driven to swing around the transverse pin 10 as the center. The height of the patient's legs can be repeatedly adjusted through the swinging to promote the flexion and extension of the knee joint, maintain the flexibility of the joint, and prevent joint stiffness.

[0030] At the same time, the active disk 13 is driven to rotate freely in the vertical direction by a motor fixed on the mounting plate 5. When the active disk 13 rotates, the rocker arm 12 can be driven to swing, so that the driven disk 14 is driven to reciprocate in the vertical direction in a fan-shaped trajectory through the swinging process of the rocker arm 12, wherein the driven disk 14 and the active disk 13 have different diameters, and the intersection points of the rocker arm 12, the active disk 13 and the driven disk 14 are all at the edge of the circular structure, so that when the active disk 13 rotates in the same direction, the driven disk 14 can be driven to rotate only in the fan-shaped trajectory, and at the same time, the driven disk 14 is coaxially fixed with the swing seat 6, so that the swing seat 6 can be driven to rotate synchronously with the driven disk 14.

[0031] Based on the knee flexion assembly embodiment, the said support assembly comprises a traverse block 24 arranged below the cushion plate 2 and reciprocating in the horizontal direction, the cushion plate 2 is provided with a transverse slide groove for sliding connection of the traverse block 24, and the traverse block 24 is fixedly connected with a guide column 16; The end of the guide column 16 away from the lateral displacement seat 25 is fixedly connected to a piston plate 29 , and a gas blocking cylinder 30 in gas communication with the lumbar cushion airbag 4 is fixedly connected to the frame 1 , and the outer peripheral surface of the piston plate 29 is in sliding contact with the inner wall of the gas blocking cylinder 30 .

[0032] The mounting plate 5 is provided with a horizontal rod 26 which can rotate freely in the horizontal direction and is transmission-connected to the active disk 13; the traverse block 24 is fixedly connected with a lateral displacement seat 25 on one side facing the horizontal rod 26; the horizontal rod 26 is fixedly connected with a limit pin 27 on one side facing the lateral displacement seat 25; the lateral displacement seat 25 is provided with a limit groove 28 for the limit pin 27 to be slidably connected.

[0033] like Figure 2 , Figure 4 and Figure 8 As shown, the horizontal rod 26 is transmission-connected to the active disk 13, and the two rotate alternately. In actual use, the purpose of alternating operation can be achieved through the meshing relationship between the full gear and the sector gear, and when the output shaft is in a different direction, the power transmission process of the output shaft is changed through the meshing relationship between the bevel gears. At the same time, when the horizontal rod 26 rotates in the horizontal direction, the limit pin 27 fixed thereon rotates synchronously, so that the horizontal position of the limit pin 27 changes, and the lateral shift seat 25 can be driven to move in the horizontal longitudinal direction through the limit pin 27.

[0034] At the same time, a limit groove 28 for sliding connection of the limit pin 27 is provided on the lateral displacement seat 25. By providing the limit groove 28, the position of the limit pin 27 in the horizontal lateral direction can be changed, thereby preventing the existence of the lateral displacement seat 25 from causing motion interference to the rotation process of the horizontal rod 26 and the limit pin 27. Moreover, when the horizontal rod 26 performs a circular motion, the lateral displacement seat 25 drives the lateral block 24 and the guide column 16 arranged thereon to reciprocate in the horizontal direction, wherein a piston plate 29 is fixedly provided at one end of the guide column 16, thereby driving the piston plate 29 to reciprocate in the air blocking cylinder 30, thereby completing the process of extracting and discharging gas into the lumbar pad airbag 4, so as to achieve the purpose of dynamically adjusting the amount of gas in the lumbar pad airbag 4, and adjusting the supporting force of the lumbar pad airbag 4 on the patient's waist through the change of the amount of gas in the lumbar pad airbag 4.

[0035] Based on the embodiment of the composite support assembly, the inner support assembly includes a horizontal push rod 17 arranged on the inner frame 15, and the end of the guide column 16 away from the air blocking cylinder 30 slides through the inner frame 15 and is fixedly connected to the horizontal push rod 17. Two sets of rectangular seats 18 are slidably sleeved on the horizontal push rod 17, and the upper connecting rod 19 and the lower connecting rod 20 are respectively arranged on the vertical sides of the rectangular seat 18; The two ends of the lower connecting rod 20 are respectively fixedly rotated on the inner frame 15 and the rectangular seat 18, the inner frame 15 is provided with an L-shaped rod 21 and a slot body for the L-shaped rod 21 to slide horizontally through, and the two ends of the lower connecting rod 20 are respectively fixedly rotated on the L-shaped rod 21 and the rectangular seat 18; The pressing plate 23 is disposed on an end of the L-shaped rod 21 away from the inner frame 15 .

[0036] The end of the L-shaped rod 21 away from the inner frame 15 is provided with a sleeve rod 22 , on which two grooves for horizontal sliding connection of the L-shaped rod 21 are provided, and a pressure plate 23 is fixedly rotated on the sleeve rod 22 .

[0037] like Figure 2 , Figure 4 and Figure 7 As shown, when the guide column 16 moves in the horizontal direction, it can drive the horizontal push rod 17 fixed at its end to move synchronously. A rectangular seat 18 is slidably sleeved on the horizontal push rod 17. When the horizontal push rod 17 follows the guide column 16 to move in the horizontal longitudinal direction, since an upper connecting rod 19 is provided on the rectangular seat 18, the rectangular seat 18 can slide on the horizontal push rod 17 under the restriction of the upper connecting rod 19, wherein a lower connecting rod 20 is also provided on the rectangular seat 18. When the rectangular seat 18 slides on the horizontal push rod 17, the lower connecting rod 20 can be driven to deflect, and the deflection of the lower connecting rod 20 drives the L-shaped rod 21 to move in the horizontal lateral direction.

[0038] It should be noted that two groups of L-shaped rods 21 are provided on the inner frame 15, and the pressure plates 23 are arranged on the L-shaped rods 21. Therefore, the two groups of pressure plates 23 can be driven to move synchronously toward or away from each other in the horizontal transverse direction through the movement of the guide column 16 in the horizontal longitudinal direction, wherein the L-shaped rod 21 is slidably connected to the sleeve rod 22, and the pressure plates 23 are fixedly rotated on the sleeve rod 22. When the pressure plates 23 are not needed, the sleeve rod 22 can be pushed to adjust the distance between the sleeve rod 22 and the inner frame 15 to drive the pressure plates 23 to move in the horizontal longitudinal direction, and the pressure plates 23 can be rotated to be horizontal, so that the pressure plates 23 are retracted to the bottom of the cushion plate 2, and the patient's legs will not be pushed when the two groups of pressure plates 23 move.

[0039] At the same time, it is also necessary to explain that rubber pads that increase friction can be added to the connection position between the L-shaped rod 21 and the pressure plate 23 and the rotation position between the sleeve rod 22 and the pressure plate 23, thereby providing a certain damping force for the horizontal movement of the sleeve rod 22 and the rotation process of the pressure plate 23, thereby avoiding arbitrary sliding of the sleeve rod 22 and arbitrary rotation of the pressure plate 23. In addition, in actual use, the two groups of pressure plates 23 are staggered with each other when they are in a horizontal state. Therefore, when the pressure plate 23 retracts to the bottom of the seat cushion plate 2, it will still move in the horizontal direction with the operation of the inner support assembly. By driving the two groups of pressure plates 23 to be staggered in the vertical direction, the two groups of pressure plates 23 can be avoided from causing movement interference with each other.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An orthopedic lower limb rehabilitation training wheelchair, comprising a wheelchair frame (1), a seat cushion plate (2) and a back cushion plate (3), characterized in that: The frame (1) is provided with a limb swinging structure for performing rehabilitation training on the patient's legs; The swing limb structure comprises two groups of foot pedals (11) arranged below the seat cushion plate (2); a mounting plate (5) is fixedly connected to the seat cushion plate (2); a transverse pin (10) is fixedly rotated on the mounting plate (5); the transverse pin (10) is fixedly connected to the foot pedals (11); and a knee flexion assembly is provided on the mounting plate (5) for driving the transverse pin (10) to reciprocate in a vertical direction; A lumbar cushion airbag (4) for supporting the patient's waist is provided between the seat cushion plate (2) and the back cushion plate (3); the lumbar cushion airbag (4) is fixedly connected to the back cushion plate (3); and a re-supporting component for adjusting the amount of gas in the lumbar cushion airbag (4) is provided on the vehicle frame (1).

2. An orthopedic lower limb rehabilitation training wheelchair according to claim 1, characterized in that: The lower surface of the cushion plate (2) is fixedly connected to an inner frame (15), and the inner frame (15) is provided with two groups of pressing plates (23) for pressing against the inner sides of the patient's thighs on one side facing the foot pedal (11).

3. An orthopedic lower limb rehabilitation training wheelchair according to claim 2, characterized in that: The cushion plate (2) is provided with an inner support assembly which drives the two groups of pressure plates (23) to move synchronously towards or away from each other in the horizontal direction.

4. The orthopedic lower limb rehabilitation training wheelchair according to claim 3, characterized in that: The knee flexion assembly comprises two sets of swing seats (6) which are fixedly rotated on a mounting plate (5); a horizontal side of the swing seat (6) is provided with a positioning plate (9); the positioning plate (9) is fixedly sleeved on a transverse pin (10); a side of the positioning plate (9) facing the swing seat (6) is fixedly connected with a positioning pin (7); and a positioning groove (8) for sliding connection of the positioning pin (7) is provided on the swing seat (6); an active disk (13) which is freely rotated in a vertical direction is provided on the mounting plate (5), and the active disk (13) is fixedly rotated on a horizontal side. The driven disk (14) is coaxially fixed on the mounting plate (5) and the swing seat (6), and the driven disk (14) is provided with a swing rod (12), and the two ends of the swing rod (12) are respectively fixedly rotated on the driving disk (13) and the driven disk (14); the composite support assembly comprises a traverse block (24) arranged below the cushion plate (2) and reciprocating in the horizontal direction, the cushion plate (2) is provided with a transverse slide groove for sliding connection of the traverse block (24), and the traverse block (24) is fixedly connected with a guide column (16); The end of the guide column (16) away from the lateral displacement seat (25) is fixedly connected to a piston plate (29); a gas blocking cylinder (30) in gas communication with the waist cushion airbag (4) is fixedly connected to the frame (1); and an outer peripheral surface of the piston plate (29) is in sliding contact with an inner wall of the gas blocking cylinder (30); The mounting plate (5) is provided with a horizontal rod (26) which is freely rotatable in the horizontal direction and is transmission-connected to the driving disk (13); a lateral displacement seat (25) is fixedly connected to the side of the lateral displacement block (24) facing the horizontal rod (26); a limit pin (27) is fixedly connected to the side of the horizontal rod (26) facing the lateral displacement seat (25); and a limit groove (28) for sliding connection of the limit pin (27) is provided on the lateral displacement seat (25); The inner support assembly comprises a push rod (17) arranged on an inner frame (15); one end of a guide column (16) away from the air blocking cylinder (30) slides through the inner frame (15) and is fixedly connected to the push rod (17); two sets of rectangular seats (18) are slidably sleeved on the push rod (17); an upper connecting rod (19) and a lower connecting rod (20) are respectively arranged on two vertical sides of the rectangular seat (18).

5. The orthopedic lower limb rehabilitation training wheelchair according to claim 4, characterized in that: The diameter of the driving disc (13) is smaller than the diameter of the driven disc (14).

6. The orthopedic lower limb rehabilitation training wheelchair according to claim 5, characterized in that: The two ends of the lower connecting rod (20) are respectively fixedly rotatable on the inner frame (15) and the rectangular seat (18); the inner frame (15) is provided with an L-shaped rod (21) and a groove body for the L-shaped rod (21) to slide horizontally through; the two ends of the lower connecting rod (20) are respectively fixedly rotatable on the L-shaped rod (21) and the rectangular seat (18).

7. An orthopedic lower limb rehabilitation training wheelchair according to claim 6, characterized in that: The pressing plate (23) is arranged on an end of the L-shaped rod (21) away from the inner frame (15).

8. An orthopedic lower limb rehabilitation training wheelchair according to claim 7, characterized in that: A sleeve rod (22) is provided at one end of the L-shaped rod (21) away from the inner frame (15), and two grooves are provided on the sleeve rod (22) for horizontal sliding connection of the L-shaped rod (21), and a pressure plate (23) is fixedly rotated on the sleeve rod (22).

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