Lower limb strength training device

Abstract

The utility model provides a lower limb strength training device, relates to medical equipment technical field, the lower limb strength training device comprises a seat device, a lower limb training device and a load adjusting device, the lower limb training device comprises a hip joint training execution mechanism, a knee joint training execution mechanism and an ankle joint training execution mechanism, the load adjusting device comprises a hip joint resistance adjusting mechanism, a knee joint resistance adjusting mechanism and an ankle joint resistance adjusting mechanism. The hip joint resistance adjusting mechanism, the knee joint resistance adjusting mechanism and the ankle joint resistance adjusting mechanism are arranged on the hip joint training executing mechanism, the knee joint training executing mechanism and the ankle joint training executing mechanism respectively. On one hand, training of hip joints, knee joints and ankle joints and comprehensive training of lower limbs are involved, on the other hand, the training intensity can be adjusted by adjusting the resistance of the joints, and the rehabilitation training device is suitable for patients with different illness states, wide in application range, capable of achieving stage training and remarkable in training effect.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a lower limb strength trainer. Background Art

[0002] Rehabilitation training refers to physical activities that are beneficial to the recovery or improvement of functions after an injury. Except for serious injuries that require rest and treatment, general injuries do not necessarily require a complete cessation of physical exercise. Appropriate and scientific physical exercise plays a positive role in the rapid healing of injuries and the promotion of functional recovery.

[0003] Lower limb training is a type of rehabilitation training and is widely used. Existing lower limb training devices can often only perform knee flexion and extension training, and cannot target the hip joint and ankle joint. Lower limb training is not comprehensive enough. In addition, existing lower limb training devices cannot apply a load to the flexion and extension movements, the training intensity is relatively single, and the training effect is poor. Content of the Utility Model

[0004] The purpose of the utility model is to provide a lower limb strength trainer to solve the above-mentioned technical problems in the prior art; the preferred technical solutions provided by the utility model can produce many technical effects; details are described below.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A lower limb strength trainer provided by the utility model includes a seat device, a lower limb training device, and a load adjustment device, wherein: the lower limb training device includes a hip joint training execution mechanism, a knee joint training execution mechanism, and an ankle joint training execution mechanism, the load adjustment device includes a hip joint resistance adjustment mechanism, a knee joint resistance adjustment mechanism, and an ankle joint resistance adjustment mechanism, and the hip joint resistance adjustment mechanism, the knee joint resistance adjustment mechanism, and the ankle joint resistance adjustment mechanism are respectively arranged on the hip joint training execution mechanism, the knee joint training execution mechanism, and the ankle joint training execution mechanism.

[0007] Preferably, the hip joint training execution mechanism includes a thigh support arm, and the seat device is provided with a first connecting shaft, wherein: the first end of the thigh support arm is rotatably arranged on the first connecting shaft, and the thigh support arm can swing reciprocally relative to the first connecting shaft in a horizontal plane; the hip joint resistance adjustment mechanism is arranged at the position where the thigh support arm is connected to the first connecting shaft and can adjust the swinging resistance of the thigh support arm relative to the first connecting shaft.

[0008] Preferably, the knee joint training execution mechanism includes a calf support arm, the top end of the calf support arm is rotatably connected to the second end of the thigh support arm, and the calf support arm can swing reciprocally relative to the thigh support arm in a vertical plane; the knee joint resistance adjustment mechanism is arranged at the position where the calf support arm and the thigh support arm are connected, and can adjust the swinging resistance of the calf support arm relative to the thigh support arm.

[0009] Preferably, the calf support arm includes a fixed arm, a telescopic arm and a locking component, wherein: the top end of the fixed arm is rotatably connected to the thigh support arm, and the knee joint resistance adjustment mechanism is arranged at the position where the fixed arm is connected to the thigh support arm; the telescopic arm is slidably connected to the fixed arm; the locking component is arranged on the telescopic arm and can lock the position of the telescopic arm relative to the fixed arm.

[0010] Preferably, the ankle joint training execution mechanism includes an ankle support arm and a foot pedal, and the ankle joint resistance adjustment mechanism includes a first ankle joint resistance adjustment mechanism, wherein: the top end of the ankle support arm is rotatably connected to the bottom end of the calf support arm, the ankle support arm can swing reciprocally relative to the calf support arm in a vertical plane, the first ankle joint resistance adjustment mechanism is arranged at the position where the ankle support arm is connected to the calf support arm, and can adjust the swinging resistance of the ankle support arm relative to the calf support arm; the foot pedal is connected to the bottom end of the ankle support arm.

[0011] Preferably, a second connecting shaft is arranged on the foot pedal, the foot pedal is rotatably connected to the bottom end of the ankle support arm through the second connecting shaft, and the foot pedal can swing reciprocally relative to the ankle support arm in a pedal plane; the pedal plane is the plane where the foot pedal is located; the ankle joint resistance adjustment mechanism includes a second ankle joint resistance adjustment mechanism, and the second ankle joint resistance adjustment mechanism is arranged at the position where the second connecting shaft is connected to the ankle support arm, and can adjust the swinging resistance of the foot pedal relative to the ankle support arm.

[0012] Preferably, a support plate is arranged on both the thigh support arm and the calf support arm, and a buffer layer is arranged inside the support plate; both the support plate and the foot pedal are connected with binding straps.

[0013] Preferably, the hip joint resistance adjustment mechanism, the knee joint resistance adjustment mechanism and the ankle joint resistance adjustment mechanism are all configured as clamping type friction resistance mechanisms, and the clamping type friction resistance mechanisms include a shell, a friction column, an embracing clamping friction plate and an adjustment component, wherein: the friction column and the embracing clamping friction plate are both arranged in the shell, and the embracing clamping friction plate is embracing and clamped on the outside of the friction column; the adjustment component is arranged on the shell and is connected to the embracing clamping friction plate, and the adjustment component can adjust the clamping force of the embracing clamping friction plate relative to the friction column.

[0014] Preferably, the adjustment assembly includes a first clamping nut, a second clamping nut, a double screw and a knob, the embracing clamping friction plate is provided with an opening, and the opening has two oppositely arranged open ends, wherein: the first clamping nut and the second clamping nut are relatively arranged on the two open ends; the double screw includes a first threaded segment and a second threaded segment which are integrally arranged, the first clamping nut is threadedly connected to the first threaded segment, the second clamping nut is threadedly connected to the second threaded segment, and the thread direction of the first clamping nut is opposite to the thread direction of the second clamping nut; the knob is arranged at the end of the double screw and rotates synchronously with the double screw.

[0015] Preferably, the seat device comprises a seat cushion, a backrest and armrests, wherein: the backrest is arranged on the seat cushion; and the armrests are arranged on both sides of the seat cushion and the backrest.

[0016] The lower limb strength training device provided by the utility model has at least the following beneficial effects:

[0017] The lower limb strength trainer includes a seat device, a lower limb training device and a load adjustment device. The seat device enables the patient to complete lower limb training in a sitting or lying state. The lower limb training device is a training execution device that provides training movements for the patient. The load adjustment device can apply a load to the training movements.

[0018] The lower limb training device includes a hip joint training execution mechanism, a knee joint training execution mechanism, and an ankle joint training execution mechanism. The load adjustment device includes a hip joint resistance adjustment mechanism, a knee joint resistance adjustment mechanism, and an ankle joint resistance adjustment mechanism. The hip joint resistance adjustment mechanism, the knee joint resistance adjustment mechanism, and the ankle joint resistance adjustment mechanism are respectively arranged on the hip joint training execution mechanism, the knee joint training execution mechanism, and the ankle joint training execution mechanism. During actual training, the patient sits on the seat device, and the lower limbs are fixed on the hip joint training execution mechanism, the knee joint training execution mechanism, and the ankle joint training execution mechanism. Then, the patient performs training on the corresponding joints through the corresponding training execution mechanisms. During the above process, medical staff can adjust the movement resistance of the corresponding training execution mechanisms through the corresponding resistance adjustment mechanisms according to the specific needs of the patient. In this way, it not only adapts to patients with different conditions, but also can achieve the phased rehabilitation training of the same patient.

[0019] Through the hip joint training execution mechanism, the knee joint training execution mechanism, and the ankle joint training execution mechanism of the present utility model, separate training or combined training of the hip joint, knee joint, and ankle joint can be achieved. Through the hip joint resistance adjustment mechanism, the knee joint resistance adjustment mechanism, and the ankle joint resistance adjustment mechanism, the adjustment of the training intensity can be achieved by adjusting the movement resistance of the joints according to actual needs.

[0020] On the one hand, the present utility model relates to the training of the hip joint, knee joint, and ankle joint, with comprehensive lower limb training. On the other hand, it can achieve the adjustment of the training intensity. It not only adapts to patients with different conditions and has a wide range of applications, but also can achieve phased training with remarkable training effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 and Figure 2 is a schematic structural diagram of the present utility model;

[0023] Figure 3 is a schematic structural diagram of the lower limb training device and the load adjustment device of the present utility model from one perspective;

[0024] Figure 4 is a schematic structural diagram of the lower limb training device and the load adjustment device of the present utility model from another perspective;

[0025] Figure 5 It is an enlarged view of part A of the present utility model;

[0026] Figure 6 It is a schematic structural diagram of the clamping type friction resistance mechanism of the present utility model;

[0027] Figure 7 It is an enlarged view of part B of the present utility model;

[0028] Reference numerals

[0029] 1. Seat device; 11. First connecting shaft; 12. Cushion; 13. Backrest; 14. Armrest; 2. Lower limb training device; 21. Hip joint training execution mechanism; 211. Thigh support arm; 22. Knee joint training execution mechanism; 221. Calf support arm; 2211. Fixed arm; 22111. Locking groove; 2212. Telescopic arm; 2213. Locking component; 22131. Locking bolt; 23. Ankle joint training execution mechanism; 231. Foot pedal; 232. Second connecting shaft; 233. Ankle support arm; 3. Load adjustment device; 31. Hip joint resistance adjustment mechanism; 32. Knee joint resistance adjustment mechanism; 321. Housing; 322. Friction column; 323. Encircling clamping friction plate; 324. Adjusting component; 3241. First clamping nut; 3242. Second clamping nut; 3243. Double screw rod; 3244. Knob; 33. First ankle joint resistance adjustment mechanism; 34. Second ankle joint resistance adjustment mechanism; 4. Support plate; 5. Binding strap. Detailed implementation manners

[0030] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope protected by the present utility model.

[0031] Embodiment 1:

[0032] The present utility model provides a lower limb strength trainer. Referring to Figure 1 and Figure 2 as shown, the lower limb strength trainer includes a seat device 1, a lower limb training device 2 and a load adjustment device 3.

[0033] The lower limb training device 2 includes a hip joint training actuator 21, a knee joint training actuator 22, and an ankle joint training actuator 23. The load adjustment device 3 includes a hip joint resistance adjustment mechanism 31, a knee joint resistance adjustment mechanism 32, and an ankle joint resistance adjustment mechanism. The hip joint resistance adjustment mechanism 31, the knee joint resistance adjustment mechanism 32, and the ankle joint resistance adjustment mechanism are respectively arranged on the hip joint training actuator 21, the knee joint training actuator 22, and the ankle joint training actuator 23.

[0034] During training, the patient sits on the seat device 1, and the patient's legs are fixed on the hip joint training actuator 21, the knee joint training actuator 22, and the ankle joint training actuator. Then, the patient performs hip abduction and adduction movements through the hip joint training actuator 21, knee flexion and extension movements through the knee joint training actuator 22, and ankle flexion, extension, abduction, and adduction movements through the ankle joint training actuator 23.

[0035] In the above process, the patient can train the hip joint, knee joint, or ankle joint separately, or perform combined training according to needs.

[0036] Before training, medical staff can adjust the resistance during hip abduction and adduction movements through the hip joint resistance adjustment mechanism 31, adjust the resistance during knee flexion and extension movements through the knee joint resistance adjustment mechanism 32, and adjust the resistance during ankle flexion, extension, abduction, and adduction movements through the ankle joint resistance adjustment mechanism.

[0037] On the one hand, the utility model relates to the training of the hip joint, knee joint, and ankle joint, with comprehensive lower limb training. On the other hand, it can adjust the training intensity, not only being suitable for patients with different conditions and having a wide range of applications, but also being able to achieve phased training with remarkable training effects.

[0038] Embodiment 2:

[0039] Embodiment 2 is based on Embodiment 1:

[0040] As Figures 1 to 7 shown, the hip joint training actuator 21 includes a thigh support arm 211. A first connecting shaft 11 is vertically arranged on the bottom side of the seat cushion 12 of the seat device 1. The first end of the thigh support arm 211 is rotatably connected to the first connecting shaft 11 through a bearing, and the thigh support arm 211 can swing reciprocally in the horizontal plane relative to the first connecting shaft 11.

[0041] The hip joint resistance adjustment mechanism 31 is arranged at the position where the thigh support arm 211 is connected to the first connecting shaft 11.

[0042] During hip joint training, medical staff adjust the swinging resistance of the thigh support arm 211 relative to the first connecting shaft 11 through the hip joint resistance adjustment mechanism 31. Then, the patient's hip joints adduct and abduct alternately, thereby achieving hip joint training with remarkable effects.

[0043] As an optional implementation manner, the knee joint training execution mechanism 22 includes a calf support arm 221. The top end of the calf support arm 221 is rotatably connected to the second end of the thigh support arm 211 through a bearing, and the calf support arm 221 can swing reciprocally relative to the thigh support arm 211 in the vertical plane.

[0044] The knee joint resistance adjustment mechanism 32 is arranged at the position where the calf support arm 221 and the thigh support arm 211 are connected.

[0045] During knee joint training, medical staff adjust the swinging resistance of the calf support arm 221 relative to the thigh support arm 211 through the knee joint resistance adjustment mechanism 32. Then, the patient's knee joints flex inward and expand outward alternately, thereby achieving knee joint training with remarkable effects.

[0046] As an optional implementation manner, the calf support arm 221 includes a fixed arm 2211, a telescopic arm 2212, and a locking assembly 2213.

[0047] The top end of the fixed arm 2211 is rotatably connected to the thigh support arm 211 through a bearing, and the knee joint resistance adjustment mechanism 32 is arranged at the position where the fixed arm 2211 and the thigh support arm 211 are connected.

[0048] The top of the telescopic arm 2212 is axially provided with a guiding groove adapted to the fixed arm 2211. The bottom end of the fixed arm 2211 is inserted into the guiding groove and is in sliding fit with the guiding groove.

[0049] The locking assembly 2213 is arranged on the telescopic arm 2212 and can lock the position of the telescopic arm 2212 relative to the fixed arm 2211.

[0050] The fixed arm 2211, the telescopic arm 2212, and the locking assembly 2213 cooperate with each other to be able to adjust the effective length of the calf support arm 221 according to the patient's height, with a wide range of applications.

[0051] Optionally, the locking assembly 2213 includes a locking bolt 22131. The side wall of the fixed arm 2211 is axially provided with a locking groove 22111. The locking end of the locking bolt 22131 passes through the telescopic arm 2212 and is inserted into the locking groove 22111 and can slide along the locking groove 22111. When the telescopic arm 2212 moves to a specified position along the fixed arm 2211, rotate the locking bolt 22131, and the locking end of the locking bolt 22131 presses against the locking groove 22111, thereby realizing the locking of the relative position.

[0052] To further improve the locking effect, the number of locking components 2213 is set to two, which are relatively arranged on both sides of the telescopic arm 2212.

[0053] As an optional implementation manner, the ankle joint training execution mechanism 23 includes an ankle support arm 233 and a foot pedal 231, and the ankle joint resistance adjustment mechanism includes a first ankle joint resistance adjustment mechanism 33.

[0054] The top end of the ankle support arm 233 is rotatably connected to the bottom end of the telescopic arm 2212 through a bearing. The ankle support arm 233 can swing reciprocally in the vertical plane relative to the telescopic arm 2212, and the foot pedal 231 is connected to the bottom end of the ankle support arm 233.

[0055] The first ankle joint resistance adjustment mechanism 33 is arranged at the position where the ankle support arm 233 and the telescopic arm 2212 are connected.

[0056] During the adduction and abduction movement of the ankle joint, the medical staff adjusts the swinging resistance of the ankle support arm 233 relative to the telescopic arm 2212 through the first ankle joint resistance adjustment mechanism 33. Then, the patient's feet alternately adduct and abduct, thereby realizing the adduction and abduction training of the ankle joint.

[0057] As an optional implementation manner, a second connecting shaft 232 is arranged on the foot pedal 231, and a bearing is sleeved outside the second connecting shaft 232. The foot pedal 231 is rotatably connected to the bottom end of the ankle support arm 233 through the second connecting shaft 232 and the bearing. The foot pedal 231 can swing reciprocally in the pedal plane relative to the ankle support arm 233.

[0058] The ankle joint resistance adjustment mechanism includes a second ankle joint resistance adjustment mechanism 34, and the second ankle joint resistance adjustment mechanism 34 is arranged at the position where the second connecting shaft 232 is connected to the ankle support arm 233.

[0059] During the flexion and extension movement of the ankle joint, the medical staff adjusts the swinging resistance of the foot pedal 231 relative to the ankle support arm 233 through the second ankle joint resistance adjustment mechanism 34. Then, the patient's feet alternately flex inward and abduct outward, thereby realizing the flexion and extension training of the ankle joint.

[0060] The combination of the adduction and abduction training and the flexion and extension training of the ankle joint has a remarkable training effect.

[0061] As an optional implementation manner, a support plate 4 is arranged on both the thigh support arm 211 and the calf support arm 221. A buffer layer is arranged inside the support plate 4, and the buffer layer adopts a sponge pad.

[0062] Both the support plate 4 and the foot pedal 231 are connected with a binding strap 5, and the binding strap 5 is used to fix the patient's leg.

[0063] As an optional implementation, the hip joint resistance adjustment mechanism 31, the knee joint resistance adjustment mechanism 32, the first ankle joint resistance adjustment mechanism 33, and the second ankle joint resistance adjustment mechanism 34 are all set as clamping friction resistance mechanisms, and their frictional force is the movement resistance of the joint. By adjusting the magnitude of the frictional force, the adjustment of the movement resistance is achieved.

[0064] The clamping friction resistance mechanism includes a housing 321, a friction column 322, an encircling clamping friction plate 323, and an adjustment assembly 324.

[0065] The friction column 322 and the encircling clamping friction plate 323 are both arranged inside the housing 321, and the encircling clamping friction plate 323 encircles and clamps the outside of the friction column 322; the adjustment assembly 324 is arranged on the housing 321 and is connected to the encircling clamping friction plate 323. The adjustment assembly 324 can adjust the clamping force of the encircling clamping friction plate 323 relative to the friction column 322. The greater the clamping force, the greater the frictional force, the greater the movement resistance, and the greater the corresponding training intensity.

[0066] In the actual application process, the friction column 322 and the encircling clamping friction plate 323 installed on the housing 321 are respectively connected to the two components of the rotating pair. By adjusting the frictional force between the friction column 322 and the encircling clamping friction plate 323, the adjustment of the dynamic resistance of the two components is achieved.

[0067] Taking the knee joint resistance adjustment mechanism 32 as an example, the rotating shaft of the calf support arm 221 is rotatably connected to the thigh support arm 211 through a bearing. The end of the rotating shaft of the calf support arm 221 passes through the thigh support arm 211 and is fixedly connected with a friction column 322. The housing 321 is fixedly arranged on the outer wall of the thigh support arm 211. When the encircling clamping friction plate 323 inside the housing 321 clamps the friction column 322 tightly, the swinging resistance of the calf support arm 221 relative to the thigh support arm 211 increases.

[0068] Similarly, for the hip joint resistance adjustment mechanism 31, the bottom end of the first connecting shaft 11 passes through the thigh support arm 211, its friction column 322 is connected to the bottom end of the first connecting shaft 11, and its housing 321 is fixedly arranged on the bottom wall of the thigh support arm 211.

[0069] For the first ankle joint resistance adjustment mechanism 33, the rotating shaft of the ankle support arm 233 passes through the telescopic arm 2212, its friction column 322 is fixedly connected to the rotating shaft of the ankle support arm 233, and its housing 321 is fixedly arranged on the outer wall of the telescopic arm 2212.

[0070] For the second ankle joint resistance adjustment mechanism 34, the bottom end of the second connecting shaft 232 passes through the foot pedal 231, its friction column 322 is connected to the bottom end of the second connecting shaft 232, and its housing 321 is fixedly arranged on the bottom wall of the foot pedal 231.

[0071] As an optional implementation, the adjustment assembly 324 includes a first clamping nut 3241 , a second clamping nut 3242 , a double screw 3243 and a knob 3244 .

[0072] The embracing clamping friction plate 323 is provided with an opening, which has two oppositely arranged open ends, and the first clamping nut 3241 and the second clamping nut 3242 are oppositely arranged on the two open ends; the double screw 3243 includes a first thread segment and a second thread segment that are integrally arranged, the first clamping nut 3241 is threadedly connected to the first thread segment, and the second clamping nut 3242 is threadedly connected to the second thread segment, and the thread direction of the first clamping nut 3241 is opposite to the thread direction of the second clamping nut 3242.

[0073] In this way, when the double screw 3243 rotates forward, the first clamping nut 3241 and the second clamping nut 3242 move toward each other, driving the two open ends to move toward each other, and the embracing clamping friction plate 323 embraces the clamping friction column 322 .

[0074] The smaller the distance between the first clamping nut 3241 and the second clamping nut 3242 is, the greater the clamping force is and the greater the friction force is.

[0075] When the double screw 3243 rotates in the opposite direction, the first clamping nut 3241 and the second clamping nut 3242 move in opposite directions, driving the two open ends to move in opposite directions, and the surrounding clamping friction plate 323 releases the friction column 322 .

[0076] The knob 3244 is disposed at the end of the double screw 3243 and rotates synchronously with the double screw 3243 to facilitate the rotation operation.

[0077] As an optional embodiment, the seat device 1 includes a seat cushion 12 , a backrest 13 and an armrest 14 .

[0078] The backrest 13 is arranged on the seat cushion 12 , and the backrest 13 can adopt an existing angle-adjustable backrest.

[0079] The armrests 14 are arranged on both sides of the seat cushion 12 and the backrest 13 , and the armrests 14 can adopt existing folding armrests.

[0080] In the description of the present application, it should be understood that the terms "upper", "lower", "inside", "outside", "top", "bottom", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 a limitation on the present application.

[0081] In addition, 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 quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, the meaning of "a plurality" and "several" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0082] In this application, unless otherwise clearly stipulated and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0083] As described above, the above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered by the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claimed rights.

Claims

1. A lower limb strength training device, characterized in that: It includes a seat device, a lower limb training device and a load adjustment device, wherein: The lower limb training device includes a hip joint training actuator, a knee joint training actuator and an ankle joint training actuator, and the load adjustment device includes a hip joint resistance adjustment mechanism, a knee joint resistance adjustment mechanism and an ankle joint resistance adjustment mechanism, and the hip joint resistance adjustment mechanism, the knee joint resistance adjustment mechanism and the ankle joint resistance adjustment mechanism are respectively arranged on the hip joint training actuator, the knee joint training actuator and the ankle joint training actuator.

2. The lower limb strength training device according to claim 1, characterized in that: The hip joint training execution mechanism comprises a thigh support arm, and the seat device is provided with a first connecting shaft, wherein: The first end of the thigh support arm is rotatably arranged on the first connecting shaft, and the thigh support arm can swing back and forth in a horizontal plane relative to the first connecting shaft; The hip joint resistance adjustment mechanism is arranged at the position where the thigh support arm is connected to the first connecting shaft, and can adjust the swing resistance of the thigh support arm relative to the first connecting shaft.

3. The lower limb strength training device according to claim 2, characterized in that: The knee joint training execution mechanism comprises a calf support arm, the top end of the calf support arm is rotatably connected to the second end of the thigh support arm, and the calf support arm can swing back and forth in a vertical plane relative to the thigh support arm; The knee joint resistance adjustment mechanism is arranged at a position where the calf support arm and the thigh support arm are connected, and can adjust the swing resistance of the calf support arm relative to the thigh support arm.

4. The lower limb strength training device according to claim 3, characterized in that: The calf support arm comprises a fixed arm, a telescopic arm and a locking assembly, wherein: The top end of the fixed arm is rotatably connected to the thigh support arm, and the knee joint resistance adjustment mechanism is arranged at the position where the fixed arm is connected to the thigh support arm; The telescopic arm is slidably connected to the fixed arm; The locking assembly is arranged on the telescopic arm and can lock the position of the telescopic arm relative to the fixed arm.

5. The lower limb strength training device according to claim 3, characterized in that: The ankle joint training execution mechanism includes an ankle support arm and a foot pedal, and the ankle joint resistance adjustment mechanism includes a first ankle joint resistance adjustment mechanism, wherein: The top end of the ankle support arm is rotatably connected to the bottom end of the calf support arm, and the ankle support arm can swing back and forth in a vertical plane relative to the calf support arm. The first ankle joint resistance adjustment mechanism is arranged at a position where the ankle support arm and the calf support arm are connected, and can adjust the swing resistance of the ankle support arm relative to the calf support arm. The foot pedal is connected to the bottom end of the ankle support arm.

6. The lower limb strength training device according to claim 5, characterized in that: The foot pedal is provided with a second connecting shaft, and the foot pedal is rotatably connected to the bottom end of the ankle support arm through the second connecting shaft, and the foot pedal can swing back and forth in the pedal plane relative to the ankle support arm; The ankle joint resistance adjustment mechanism includes a second ankle joint resistance adjustment mechanism, which is arranged at a position where the second connecting shaft is connected to the ankle support arm and can adjust the swing resistance of the foot pedal relative to the ankle support arm.

7. The lower limb strength training device according to claim 6, characterized in that: The thigh support arm and the calf support arm are both provided with a support plate, and a buffer layer is provided inside the support plate; The support plate and the foot pedal are both connected with binding belts.

8. The lower limb strength training device according to claim 1, characterized in that: The hip joint resistance adjustment mechanism, the knee joint resistance adjustment mechanism and the ankle joint resistance adjustment mechanism are all configured as clamping friction resistance mechanisms, and the clamping friction resistance mechanisms include a housing, a friction column, an embracing clamping friction plate and an adjustment component, wherein: The friction column and the embracing clamping friction plate are both arranged in the housing, and the embracing clamping friction plate is embracing and clamping the outer side of the friction column; The adjusting component is arranged on the housing and is connected to the encircling clamping friction plate. The adjusting component can adjust the clamping force of the encircling clamping friction plate relative to the friction column.

9. The lower limb strength training device according to claim 8, characterized in that: The adjustment assembly comprises a first clamping nut, a second clamping nut, a double screw and a knob, the embracing clamping friction plate is provided with an opening, and the opening has two oppositely arranged opening ends, wherein: The first clamping nut and the second clamping nut are arranged oppositely on the two open ends; The twin screw comprises a first thread segment and a second thread segment which are integrally arranged, the first clamping nut is threadedly connected to the first thread segment, the second clamping nut is threadedly connected to the second thread segment, and the thread direction of the first clamping nut is opposite to the thread direction of the second clamping nut; The knob is arranged at the end of the twin screws and rotates synchronously with the twin screws.

10. The lower limb strength training device according to claim 1, characterized in that: The seat device comprises a seat cushion, a backrest and armrests, wherein: The backrest is arranged on the seat cushion; The armrests are arranged on both sides of the seat cushion and the backrest.

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