Lower limb trainer for preventing cardiovascular and cerebrovascular diseases

Abstract

The invention belongs to the technical field of rehabilitation training devices, and particularly relates to a lower limb trainer for preventing cardiovascular and cerebrovascular diseases, which comprises a base, second cranks are rotatably connected to two sides of the base respectively, a pedal is rotatably connected to one end of each second crank, and a fixing rod is fixedly connected to the upper surface of each pedal. The outer wall of the fixing rod is slidably connected with a moving rod, the outer wall of the moving rod is slidably provided with a moving block, the outer wall of the moving block is fixedly connected with a lantern ring, the lantern ring is used for fixing legs, the upper surface of the base is fixedly connected with a fixing frame, and the interior of the fixing frame is slidably connected with a moving frame. The device can be accurately adjusted according to the height of an amputated patient, the amputated part and the recovery stage, it is ensured that the lantern ring can be fixed to the position most suitable for the patient, and the adaptability and practicability of the training device are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of rehabilitation training devices, in particular to a lower limb training device for preventing cardiovascular and cerebrovascular diseases. Background Art

[0002] Cardiovascular and cerebrovascular diseases are one of the major diseases that seriously threaten human health worldwide. They are characterized by high morbidity, high disability rate, high mortality rate and high recurrence rate. With the aging of the population and changes in lifestyle, the prevention and treatment of cardiovascular and cerebrovascular diseases are particularly important. As an auxiliary prevention method, lower limb trainers aim to improve lower limb muscle strength, improve blood circulation, enhance cardiopulmonary function, and thus reduce the risk of cardiovascular and cerebrovascular diseases through specific training methods.

[0003] A patent application with publication number CN219149155U discloses a cardiovascular rehabilitation training device, which includes a telescopic upper limb training control box, a lower limb training controller and a seat. The telescopic upper limb training control box is equipped with a hand-grip crank, the lower limb training controller is equipped with a foot pedal, and also includes an adjustable support component.

[0004] The above-mentioned existing training device fixes the patient's feet on the pedals, and the patient's feet use force to drive the handle to rotate, so that the patient's lower limbs can achieve flexion and extension training effects;

[0005] The above device has the following problem when in use: when the patient is a disabled person after amputation, one or both feet of the patient cannot be effectively fixed on the foot pedal of the trainer due to the amputation problem, and the patient is unable to use the above trainer for training operations.

[0006] To this end, the present invention provides a lower limb training device for preventing cardiovascular and cerebrovascular diseases. Summary of the Invention

[0007] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0008] The technical solution adopted by the present invention to solve its technical problems is: the lower limb trainer for preventing cardiovascular and cerebrovascular diseases described in the present invention includes a base, both sides of the base are rotatably connected to a second crank, one end of the second crank is rotatably connected to a pedal, the upper surface of the pedal is fixedly connected to a fixed rod, the outer wall of the fixed rod is slidably connected to a moving rod, the outer wall of the moving rod is slidably provided with a moving block, the outer wall of the moving block is fixedly connected to a ring, the ring is used to fix the legs, the upper surface of the base is fixedly connected to a fixed frame, the interior of the fixed frame is slidably connected to a moving frame, and the upper surface of the moving frame is fixedly connected to a seat.

[0009] Preferably, a support rod is fixedly connected to the upper surface of the base, one end of the support rod is fixedly connected to a fixed plate, and both sides of the fixed plate are rotatably connected to first cranks.

[0010] Preferably, the movable frame is internally rotatably connected with a screw rod, and both ends of the screw rod are rotatably connected to both sides of the inner wall of the fixed frame respectively.

[0011] Preferably, a plurality of limiting holes are symmetrically provided on the outer wall of the fixed rod, a limiting rod is slidingly provided inside the limiting hole, and the size of the limiting rod matches the size of the limiting hole, which is used to fix the position of the movable rod, one end of the limiting rod is slidingly connected to the inner wall of the movable rod, and a third spring is fixedly connected between the limiting rod and the inner wall of the movable rod.

[0012] Preferably, the two sides of the limit rod are respectively fixedly connected with a third extrusion rod, one end of the third extrusion rod is slidably connected with a second convex plate, the upper surface of the second convex plate is fixedly connected with the first extrusion rod, the surface of the first extrusion rod is slidably connected to the inner wall of the moving rod, and a second spring is fixedly connected between the surface of the first extrusion rod and the second convex plate.

[0013] Preferably, one end of the first extrusion rod is slidably connected to a first convex plate, the inner wall of the first convex plate is slidably connected to a limiting frame, one end of the limiting frame is fixedly connected to the inner wall of the moving rod, a first spring is fixedly connected between the first convex plate and the limiting frame, and one side of the first convex plate is fixedly connected to the second extrusion rod.

[0014] Preferably, the moving block is rotatably connected to a gear ring, the lower surface of the gear ring is fixedly connected to a turntable, the surface of the turntable is symmetrically provided with arc grooves, the two arc grooves are internally slidably connected to a sliding rod, the surface of the sliding rod is slidably connected to a slider, the slider and the lower surface of the moving block are slidably connected, one end of the sliding rod is fixedly connected to a fixed block, one side of the fixed block is fixedly connected to a spring telescopic rod, the movable end of the spring telescopic rod is fixedly connected to a magnetic plate, the gear ring is meshed and connected to a gear, the gear is fixedly connected to a turning handle inside, the surface of the turning handle is rotatably connected to the upper surface of the moving block, one end of the turning handle is threadedly connected to a screw, and the upper surface of the moving block is provided with a groove, and the sizes of the groove and the screw match.

[0015] Preferably, one end of the sliding rod is slidably connected to a third protrusion, and the third protrusion is fixedly connected to the inner upper surface of the moving block. An observation groove is provided on one side of the third protrusion, and the observation groove is opened on the upper surface of the moving block, and the size of the observation groove matches the size of the sliding rod. A fourth spring is fixedly connected between the fixed block and the slider, and an inclined groove is opened on one side of the magnetic plate.

[0016] Preferably, a sliding groove is provided on the inner side wall of the moving block, and the size of the sliding groove matches the size of the second extrusion rod.

[0017] Preferably, the outer wall of the movable rod is fixedly connected to a connecting block, the internal rotation of the connecting block is connected to a baffle rod, one end of the baffle rod is fixedly connected to a magnetic block, the magnetism of the magnetic block and the magnetism of the magnetic plate are attracted to each other, the two sides of the baffle rod and the inner wall of the connecting block are fixedly connected to torsion springs, the inner lower surface of the connecting block is fixedly connected to a baffle, and a limiting groove is provided on the outer wall of the second extrusion rod.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The lower limb training device for preventing cardiovascular and cerebrovascular diseases described in the present invention is provided with a collar. When the cardiovascular and cerebrovascular disease patient is a disabled person who has undergone amputation, the leg can be placed inside the collar and fixed by the collar. After the fixation is completed, a fixed state can be formed between the leg and the pedal, and then the pedal can be driven to perform reciprocating exercise. This device allows amputees to perform lower limb rehabilitation training, helps to restore or enhance the function and muscle strength of the lower limbs, thereby improving the overall training ability.

[0020] 2. The lower limb trainer for preventing cardiovascular and cerebrovascular diseases described in the present invention is provided with a movable rod and a fixed rod. The movable rod can slide on the surface of the fixed rod. When the movable rod drives the fixed block to slide to a suitable position, the limiting rod can enter the limiting hole on the surface of the fixed rod to fix the movable rod. The movable rod drives the ring on the surface of the fixed block to move to a suitable position to fix the legs of disabled patients after amputation for training operations. The device can be precisely adjusted according to the height, amputation site and recovery stage of the amputee patient to ensure that the ring can be fixed in the position most suitable for the patient, thereby improving the adaptability and practicality of the trainer.

[0021] 3. The lower limb training device for preventing cardiovascular and cerebrovascular diseases described in the present invention is provided with a moving block. When the length of the patient's leg after amputation is within the length range of the moving rod, the moving rod and the fixed rod can be fixed. By driving the moving block to slide on the surface of the moving rod, the moving block can drive the ring to move to a suitable position to fix the patient's leg. The patient or therapist of this device only needs to perform simple fixing and sliding operations to achieve precise positioning of the ring. There is no need for complicated settings or adjustment processes. It can be precisely adjusted according to the height and amputation site of different patients, thereby improving the targetedness and effect of training. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0025] Figure 3 It is a structural schematic diagram of the moving rod and the moving block of the present invention;

[0026] Figure 4 It is a structural cross-sectional view of the movable rod and the fixed rod of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the fixing rod of the present invention;

[0028] Figure 6 is a cross-sectional view of the overall structure of the mobile rod of the present invention;

[0029] Figure 7 This invention Figure 6 A partial enlarged view of middle A;

[0030] Figure 8 is a cross-sectional view of the internal structure of the connecting block of the present invention;

[0031] Figure 9 It is a partial structural schematic diagram of the first extrusion rod and the second extrusion rod of the present invention;

[0032] Figure 10 It is a partial structural diagram of the first extrusion rod and the limiting rod of the present invention;

[0033] Figure 11 It is a structural schematic diagram of the moving block of the present invention;

[0034] Figure 12 It is a structural cross-sectional view of the moving block of the present invention;

[0035] Figure 13 This is a structural cross-sectional view of the moving block of the present invention from another perspective;

[0036] Figure 14 It is a structural schematic diagram of the magnetic plate of the present invention;

[0037] In the figure: 1, base; 11, support rod; 12, fixed plate; 13, first crank; 2, second crank; 3, pedal; 4, fixed rod; 41, limiting hole; 5, moving rod; 51, first extrusion rod; 52, limiting frame; 53, second extrusion rod; 531, limiting groove; 54, first spring; 55, second convex plate; 56, second spring; 57, limiting rod; 58, third extrusion rod; 59, third spring; 510, first convex plate; 511, connecting block; 512, stop rod; 51 3. Magnetic block; 514. Baffle; 515. Torsion spring; 6. Moving block; 61. Ring gear; 62. Turntable; 63. Arc groove; 64. Slider; 65. Slide bar; 66. Fourth spring; 67. Fixed block; 68. Inclined groove; 69. Third convex plate; 610. Observation slot; 611. Gear; 612. Turning handle; 613. Screw; 614. Slide; 615. Magnetic plate; 616. Spring telescopic rod; 7. Ring; 8. Fixed frame; 81. Screw; 82. Moving frame; 83. Seat. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0039] Example 1

[0040] like Figures 1 to 4 As shown, a lower limb trainer for preventing cardiovascular and cerebrovascular diseases described in an embodiment of the present invention includes a base 1, and the two sides of the base 1 are rotatably connected to a second crank 2, one end of the second crank 2 is rotatably connected to a pedal 3, the upper surface of the pedal 3 is fixedly connected to a fixed rod 4, the outer wall of the fixed rod 4 is slidably connected to a moving rod 5, the outer wall of the moving rod 5 is slidably provided with a moving block 6, the outer wall of the moving block 6 is fixedly connected to a ring 7, and the ring 7 is used to fix the legs, the upper surface of the base 1 is fixedly connected to a fixed frame 8, the interior of the fixed frame 8 is slidably connected to a moving frame 82, and the upper surface of the moving frame 82 is fixedly connected to a seat 83.

[0041] like Figure 1 As shown, a support rod 11 is fixedly connected to the upper surface of the base 1, one end of the support rod 11 is fixedly connected to a fixed plate 12, and both sides of the fixed plate 12 are rotatably connected to first cranks 13.

[0042] like Figure 2 As shown, the movable frame 82 is internally rotatably connected to a screw rod 81 , and both ends of the screw rod 81 are rotatably connected to both sides of the inner wall of the fixed frame 8 .

[0043] like Figure 9 and Figure 10As shown, the outer wall of the fixed rod 4 is symmetrically provided with a plurality of limiting holes 41, and a limiting rod 57 is slidingly provided inside the limiting hole 41, and the size of the limiting rod 57 matches the size of the limiting hole 41, which is used to fix the position of the moving rod 5, and one end of the limiting rod 57 is slidingly connected to the inner wall of the moving rod 5, and a third spring 59 is fixedly connected between the limiting rod 57 and the inner wall of the moving rod 5.

[0044] like Figure 10 As shown, the two sides of the limit rod 57 are respectively fixedly connected with the third extrusion rod 58, and one end of the third extrusion rod 58 is slidably connected with the second protrusion plate 55. The upper surface of the second protrusion plate 55 is fixedly connected with the first extrusion rod 51, and the surface of the first extrusion rod 51 is slidably connected to the inner wall of the moving rod 5, and a second spring 56 is fixedly connected between the surface of the first extrusion rod 51 and the second protrusion plate 55.

[0045] like Figure 9 As shown, one end of the first extrusion rod 51 is slidably connected to the first protrusion plate 510, the inner wall of the first protrusion plate 510 is slidably connected to the limiting frame 52, one end of the limiting frame 52 is fixedly connected to the inner wall of the moving rod 5, a first spring 54 is fixedly connected between the first protrusion plate 510 and the limiting frame 52, and one side of the first protrusion plate 510 is fixedly connected to the second extrusion rod 53.

[0046] like Figure 13 and Figure 14 As shown, the internal rotation of the moving block 6 is connected to the ring gear 61, and the lower surface of the ring gear 61 is fixedly connected to the turntable 62. The surface of the turntable 62 is symmetrically provided with arc grooves 63. The two arc grooves 63 are internally slidably connected to the sliding rod 65, and the surface of the sliding rod 65 is slidably connected to the slider 64. The slider 64 is slidably connected to the lower surface of the moving block 6. One end of the sliding rod 65 is fixedly connected to the fixed block 67, and one side of the fixed block 67 is fixedly connected to the spring telescopic rod 616. The movable end of the spring telescopic rod 616 is fixedly connected to the magnetic plate 615. The ring gear 61 is meshed with the gear 611, and the internal fixed connection of the gear 611 is the turning handle 612. The surface of the turning handle 612 is rotatably connected to the upper surface of the moving block 6. One end of the turning handle 612 is threadedly connected to the screw 613. The upper surface of the moving block 6 is provided with a groove, and the sizes of the groove and the screw 613 match.

[0047] like Figure 11 and Figure 12As shown, one end of the slide rod 65 is slidably connected to a third protrusion 69, and the third protrusion 69 is fixedly connected to the inner upper surface of the moving block 6. An observation groove 610 is provided on one side of the third protrusion 69. The observation groove 610 is opened on the upper surface of the moving block 6, and the size of the observation groove 610 matches the size of the slide rod 65. A fourth spring 66 is fixedly connected between the fixed block 67 and the slider 64, and an inclined groove 68 is opened on one side of the magnetic plate 615.

[0048] Specifically, the existing pedal-type training device fixes the patient's feet on the pedal 3, and the patient's feet use force to drive the handle to rotate, so that the patient's lower limbs can achieve flexion and extension training effects;

[0049] When the patient is a disabled person after amputation, one or both of the patient's feet cannot be effectively fixed on the foot pedal 3 of the training device due to the problem of amputation. In this case, the patient cannot use the above-mentioned foot-operated training device for training and rehabilitation;

[0050] In order to solve the above problems, the working principle of this embodiment is as follows: in the initial state of the device, the fixed rod 4 and the movable rod 5 are in a fixed state, and the movable block 6 and the movable rod 5 are in a fixed state;

[0051] When the user is a normal patient, the medical staff can drive the screw rod 81 to rotate, and the screw rod 81 drives the movable frame 82 to slide inside the fixed frame 8, and then the movable frame 82 drives the seat 83 to move to a suitable position. The patient places his hands on the first crank 13 and his feet on the pedal 3. Then the medical staff fixes the patient's legs through the ring 7. The patient drives the second crank 2 on one side of the pedal 3 to rotate, and the lower limbs can be flexed and extended, thereby exercising the lower limbs. At the same time, the patient's arms can drive the first crank 13 to rotate to achieve rehabilitation training of the upper limbs.

[0052] When the user is a disabled person after amputation, and the amputation lengths of different patients are different, in order to meet the needs of different patients, the ring 7 needs to be moved to a suitable position to adapt to different needs;

[0053] Therefore, the working principle is as follows: at this time, the medical staff pulls out the screw 613 from the groove, and then rotates the handle 612 above the moving block 6, so that the handle 612 drives the gear 611 to rotate, and the gear 611 and the ring gear 61 are engaged, so that the ring gear 61 rotates, and the ring gear 61 drives the turntable 62 below to rotate synchronously. When the turntable 62 rotates, it drives the arc groove 63 on its surface to rotate synchronously, so that the slide rod 65 inside the arc groove 63 slides inside it, and the slide rod 65 drives the slider 64 to slide toward the outer diameter of the moving block 6, and one end of the slide rod 65 is on the third convex plate. The fourth spring 66 moves upwards in the sliding block 64 when the sliding rod 65 slides in the arc groove 63. When the sliding rod 65 moves upwards, it drives the fixed block 67 to move upwards synchronously. The fixed block 67 drives the spring telescopic rod 616 to move upwards synchronously. The spring telescopic rod 616 drives the magnetic plate 615 to move upwards. When the sliding rod 65 drives the fixed block 67 to slide synchronously toward the outer diameter of the moving block 6, the spring telescopic rod 616 is in a compressed state. Therefore, the magnetic plate 615 maintains the clamping effect between it and the moving rod 5.

[0054] When the magnetic plate 615 moves upward, the inclined groove 68 inside the magnetic plate 615 moves upward, causing the inclined groove 68 to squeeze the second squeezing rod 53 to slide toward the inside of the moving rod 5. When the sliding rod 65 moves from the oblique side of the third convex plate 69 to one end in the observation slot 610, the second squeezing rod 53 slides out of the inclined groove 68, and one end thereof fits against one side of the magnetic plate 615. After the second squeezing rod 53 is squeezed, it drives the first convex plate 510 to slide on the surface of the limit frame 52 and squeezes the first spring 54. The first convex plate 510 slides toward the inside of the moving rod 5. At the same time, the lower surface of the first convex plate 510 fits against one end of the first squeezing rod 51. When the position of the first convex plate 510 changes, the second spring 56 is decompressed and reset to drive the first squeezing rod 51 to slide upward. The first squeezing rod 51 also drives the second convex plate 55 to move upward, and the second convex plate 55 squeezes the third squeezing rod 51. The pressing rod 58 causes the third extruding rod 58 to slide toward the outside of the moving rod 5 under force, and the third extruding rod 58 drives the limiting rod 57 to slide synchronously and stretch the third spring 59, so that the limiting rod 57 slides out of the limiting groove 531 in the fixed rod 4. At this time, the fixation between the fixed rod 4 and the moving rod 5 is released, and the fixing effect between the moving rod 5 and the moving block 6 still exists. Then the medical staff can drive the moving rod 5 to slide on the surface of the fixed rod 4, so that the moving rod 5 drives the collar 7 on the surface of the moving block 6 to move to the position of the patient's leg after the amputation, and use the collar 7 to fix the patient's leg. After the leg is fixed, the turning handle 612 is driven to rotate, so that the limiting rod 57 is reset and enters the limiting hole 41 on the surface of the fixed rod 4, thereby realizing the fixing operation of the moving rod 5. Then the user can drive the pedal 3 to rotate around the second crank handle 2 to perform training operations;

[0055] This device allows amputees to perform lower limb rehabilitation training, helps to restore or enhance the function and muscle strength of the lower limbs, thereby improving overall training ability. At the same time, it can be precisely adjusted according to the height, amputation site and recovery stage of the amputee to ensure that the ring 7 can be fixed in the position that best suits the patient, thereby improving the adaptability and practicality of the trainer.

[0056] Example 2

[0057] like Figure 11 As shown, in contrast to Example 1, another embodiment of the present invention is as follows: a sliding groove 614 is provided on the inner side wall of the moving block 6 , and the size of the sliding groove 614 matches the size of the second extrusion rod 53 .

[0058] like Figures 6 to 8 As shown, the outer wall of the movable rod 5 is fixedly connected to the connecting block 511, the internal rotation of the connecting block 511 is connected to the blocking rod 512, one end of the blocking rod 512 is fixedly connected to the magnetic block 513, the magnetism of the magnetic block 513 and the magnetism of the magnetic plate 615 are attracted to each other, the two sides of the blocking rod 512 and the inner wall of the connecting block 511 are fixedly connected to the torsion spring 515, the inner lower surface of the connecting block 511 is fixedly connected to the baffle 514, and the outer wall of the second extrusion rod 53 is provided with a limiting groove 531.

[0059] Specifically, since there is a certain length between the movable rod 5 and the fixed rod 4, the movable rod 5 can be moved to extend according to the patient's needs. When the length of the lower limb of the amputee is between the movable rod 5, and the position of the lower limb where the collar 7 is located cannot be fixed due to surgery or disease, the above device cannot effectively fix the patient's lower limb for training.

[0060] In order to solve the above problem, the working principle of this embodiment is as follows: when the above-mentioned sliding rod 65 is in the observation groove 610 and close to one end of the inner diameter of the moving block 6, the magnetic plate 615 maintains the fixing effect on the moving rod 5, and then squeezes the rotating gear 611, the gear 611 and the ring gear 61 engage, so that the ring gear 61 continues to drive the turntable 62 to rotate, and the turntable 62 drives the arc groove 63 to rotate synchronously, so that the sliding rod 65 slides in the observation groove 610, so that the sliding rod 65 slides to the other end of the observation groove 610 and close to the outer diameter of the moving block 6. When the magnetic plate 615 is away from the surface of the moving rod 5 and the fixing effect between the moving rod 5 and the moving block 6 can slide on the surface of the moving rod 5, and when it passes through the second extrusion rod 53, it can pass through the second extrusion rod 53 through the sliding groove 614, and can drive the collar 7 at one end of the moving block 6 to move to a suitable position on the surface of the moving rod 5 to fix the patient's lower limb. Then, the magnetic plate 615 is reset to realize the fixing operation between the moving block 6 and the moving rod 5, and at this time, the moving rod 5 and the fixed rod 4 are both in a fixed state;

[0061] At the same time, when the magnetic plate 615 is away from the connecting block 511, the magnetic force between the magnetic ball and the magnetic plate 615 is less than the restoring force of the torsion spring 515, so that the magnetic ball is driven by the blocking rod 512 to the blocking plate 514 for limitation, and then the other end of the blocking rod 512 rotates to the limiting groove 531 inside the second extrusion rod 53. At this time, the second extrusion rod 53 is limited by the blocking rod 512 to avoid external collision or other factors causing the second extrusion rod 53 to move and cause the stability between the fixed rod 4 and the movable rod 5 to decrease. When the magnetic plate 615 and the second extrusion rod 53 contact, the magnetic ball and the magnetic plate 615 attract each other, causing the blocking rod 512 to rotate, and the blocking rod 512 slides out of the limiting groove 531 in the second extrusion rod 53, so that the second extrusion rod 53 can then move.

[0062] This embodiment can drive the moving block 6 to slide freely on the surface of the moving rod 5, and when the moving block 6 drives the magnetic plate 615 away from the second extrusion rod 53, the second extrusion rod 53 can automatically limit itself to avoid movement between the fixed rod 4 and the moving rod 5.

[0063] Working principle: In the initial state of this device, the fixed rod 4 and the movable rod 5 are in a fixed state, and the movable block 6 and the movable rod 5 are in a fixed state;

[0064] When the user is a normal patient, the medical staff can drive the screw rod 81 to rotate, and the screw rod 81 drives the movable frame 82 to slide inside the fixed frame 8, and then the movable frame 82 drives the seat 83 to move to a suitable position. The patient places his hands on the first crank 13 and his feet on the pedal 3. Then the medical staff fixes the patient's legs through the ring 7. The patient drives the second crank 2 on one side of the pedal 3 to rotate, and the lower limbs can be flexed and extended, thereby exercising the lower limbs. At the same time, the patient's arms can drive the first crank 13 to rotate to achieve rehabilitation training of the upper limbs.

[0065] When the user is a disabled person after amputation, and the amputation lengths of different patients are different, in order to meet the needs of different patients, the ring 7 needs to be moved to a suitable position to adapt to different needs;

[0066] Therefore, the working principle is as follows: at this time, the medical staff pulls out the screw 613 from the groove, and then rotates the handle 612 above the moving block 6, so that the handle 612 drives the gear 611 to rotate, and the gear 611 and the ring gear 61 are engaged, so that the ring gear 61 rotates, and the ring gear 61 drives the turntable 62 below to rotate synchronously. When the turntable 62 rotates, it drives the arc groove 63 on its surface to rotate synchronously, so that the slide rod 65 inside the arc groove 63 slides inside it, and the slide rod 65 drives the slider 64 to slide toward the outer diameter of the moving block 6, and one end of the slide rod 65 is on the third convex plate. The fourth spring 66 moves upwards in the sliding block 64 when the sliding rod 65 slides in the arc groove 63. When the sliding rod 65 moves upwards, it drives the fixed block 67 to move upwards synchronously. The fixed block 67 drives the spring telescopic rod 616 to move upwards synchronously. The spring telescopic rod 616 drives the magnetic plate 615 to move upwards. When the sliding rod 65 drives the fixed block 67 to slide synchronously toward the outer diameter of the moving block 6, the spring telescopic rod 616 is in a compressed state. Therefore, the magnetic plate 615 maintains the clamping effect between it and the moving rod 5.

[0067] When the magnetic plate 615 moves upward, the inclined groove 68 inside the magnetic plate 615 moves upward, causing the inclined groove 68 to squeeze the second squeezing rod 53 to slide toward the inside of the moving rod 5. When the sliding rod 65 moves from the oblique side of the third convex plate 69 to one end in the observation slot 610, the second squeezing rod 53 slides out of the inclined groove 68, and one end thereof fits against one side of the magnetic plate 615. After the second squeezing rod 53 is squeezed, it drives the first convex plate 510 to slide on the surface of the limit frame 52 and squeezes the first spring 54. The first convex plate 510 slides toward the inside of the moving rod 5. At the same time, the lower surface of the first convex plate 510 fits against one end of the first squeezing rod 51. When the position of the first convex plate 510 changes, the second spring 56 is decompressed and reset to drive the first squeezing rod 51 to slide upward. The first squeezing rod 51 also drives the second convex plate 55 to move upward, and the second convex plate 55 squeezes the third squeezing rod 51. The pressing rod 58 causes the third extruding rod 58 to slide toward the outside of the moving rod 5 under force, and the third extruding rod 58 drives the limiting rod 57 to slide synchronously and stretch the third spring 59, so that the limiting rod 57 slides out of the limiting groove 531 in the fixed rod 4. At this time, the fixation between the fixed rod 4 and the moving rod 5 is released, and the fixing effect between the moving rod 5 and the moving block 6 still exists. Then the medical staff can drive the moving rod 5 to slide on the surface of the fixed rod 4, so that the moving rod 5 drives the collar 7 on the surface of the moving block 6 to move to the position of the patient's leg after the amputation, and use the collar 7 to fix the patient's leg. After the leg is fixed, the turning handle 612 is driven to rotate, so that the limiting rod 57 is reset and enters the limiting hole 41 on the surface of the fixed rod 4, thereby realizing the fixing operation of the moving rod 5. Then the user can drive the pedal 3 to rotate around the second crank handle 2 to perform training operations;

[0068] When the sliding rod 65 is in the observation groove 610 and close to one end of the inner diameter of the moving block 6, the magnetic plate 615 maintains the fixing effect on the moving rod 5, and then squeezes and rotates the gear 611, and the gear 611 and the ring gear 61 are engaged, so that the ring gear 61 continues to drive the turntable 62 to rotate, and the turntable 62 drives the arc groove 63 to rotate synchronously, so that the sliding rod 65 slides in the observation groove 610, so that the sliding rod 65 slides to the other end of the observation groove 610 and close to the outer diameter of the moving block 6. At this time, the magnetic plate 615 is away from the surface of the moving rod 5 and releases the fixing effect between it and the moving rod 5. Then the moving block 6 can slide on the surface of the moving rod 5. When passing through the second extrusion rod 53, it can pass through the second extrusion rod 53 through the sliding groove 614, which can drive the ring 7 at one end of the moving block 6 to move to the appropriate position on the surface of the moving rod 5 to fix the patient's lower limb. Then the magnetic plate 615 is reset to achieve the fixing operation between the moving block 6 and the moving rod 5, and at this time the moving rod 5 and the fixed rod 4 are both in a fixed state;

[0069] At the same time, when the magnetic plate 615 is away from the connecting block 511, the magnetic force between the magnetic ball and the magnetic plate 615 is less than the restoring force of the torsion spring 515, so that the magnetic ball is driven by the blocking rod 512 to the blocking plate 514 for limitation, and then the other end of the blocking rod 512 rotates to the limiting groove 531 inside the second extrusion rod 53. At this time, the second extrusion rod 53 is limited by the blocking rod 512 to avoid external collision or other factors causing the second extrusion rod 53 to move and cause the stability between the fixed rod 4 and the movable rod 5 to decrease. When the magnetic plate 615 and the second extrusion rod 53 contact, the magnetic ball and the magnetic plate 615 attract each other, causing the blocking rod 512 to rotate, and the blocking rod 512 slides out of the limiting groove 531 in the second extrusion rod 53, so that the second extrusion rod 53 can then move.

[0070] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A lower limb training device for preventing cardiovascular and cerebrovascular diseases, characterized in that: The invention comprises a base (1), wherein the two sides of the base (1) are rotatably connected to second crank handles (2), one end of the second crank handle (2) is rotatably connected to a pedal (3), the upper surface of the pedal (3) is fixedly connected to a fixed rod (4), the outer wall of the fixed rod (4) is slidably connected to a moving rod (5), the outer wall of the moving rod (5) is slidably provided with a moving block (6), the outer wall of the moving block (6) is fixedly connected to a collar (7), and the collar (7) is used to fix the legs, the upper surface of the base (1) is fixedly connected to a fixed frame (8), the interior of the fixed frame (8) is slidably connected to a moving frame (82), and the upper surface of the moving frame (82) is fixedly connected to a seat (83).

2. A lower limb training device for preventing cardiovascular and cerebrovascular diseases according to claim 1, characterized in that: A support rod (11) is fixedly connected to the upper surface of the base (1), one end of the support rod (11) is fixedly connected to a fixed plate (12), and both sides of the fixed plate (12) are rotatably connected to first crank handles (13).

3. A lower limb training device for preventing cardiovascular and cerebrovascular diseases according to claim 2, characterized in that: The movable frame (82) is internally rotatably connected with a screw rod (81), and the two ends of the screw rod (81) are respectively rotatably connected to the two sides of the inner wall of the fixed frame (8).

4. A lower limb training device for preventing cardiovascular and cerebrovascular diseases according to claim 3, characterized in that: The outer wall of the fixed rod (4) is symmetrically provided with a plurality of limiting holes (41), and a limiting rod (57) is slidably provided inside the limiting hole (41), and the size of the limiting rod (57) matches the size of the limiting hole (41), so as to fix the position of the moving rod (5), and one end of the limiting rod (57) is slidably connected to the inner wall of the moving rod (5), and a third spring (59) is fixedly connected between the limiting rod (57) and the inner wall of the moving rod (5).

5. A lower limb training device for preventing cardiovascular and cerebrovascular diseases according to claim 4, characterized in that: The two sides of the limit rod (57) are respectively fixedly connected with a third extrusion rod (58), one end of the third extrusion rod (58) is slidably connected with a second convex plate (55), the upper surface of the second convex plate (55) is fixedly connected with a first extrusion rod (51), the surface of the first extrusion rod (51) is slidably connected to the inner wall of the moving rod (5), and a second spring (56) is fixedly connected between the surface of the first extrusion rod (51) and the second convex plate (55).

6. A lower limb training device for preventing cardiovascular and cerebrovascular diseases according to claim 5, characterized in that: One end of the first extrusion rod (51) is slidably connected to a first convex plate (510), the inner wall of the first convex plate (510) is slidably connected to a limiting frame (52), one end of the limiting frame (52) is fixedly connected to the inner wall of the moving rod (5), a first spring (54) is fixedly connected between the first convex plate (510) and the limiting frame (52), and one side of the first convex plate (510) is fixedly connected to a second extrusion rod (53).

7. The lower limb training device for preventing cardiovascular and cerebrovascular diseases according to claim 1, characterized in that: The moving block (6) is rotatably connected to a gear ring (61) inside, and a rotating disk (62) is fixedly connected to the lower surface of the gear ring (61). The surface of the rotating disk (62) is symmetrically provided with arc grooves (63). Two arc grooves (63) are slidably connected to the inside of a sliding rod (65). The surface of the sliding rod (65) is slidably connected to a slider (64). The slider (64) and the lower surface of the moving block (6) are slidably connected. One end of the sliding rod (65) is fixedly connected to a fixed block (67). One side of the fixed block (67) A spring telescopic rod (616) is fixedly connected, and the movable end of the spring telescopic rod (616) is fixedly connected to a magnetic plate (615). The gear ring (61) is meshingly connected to a gear (611). The interior of the gear (611) is fixedly connected to a turning handle (612). The surface of the turning handle (612) is rotatably connected to the upper surface of the moving block (6). One end of the turning handle (612) is threadedly connected to a screw (613). A groove is provided on the upper surface of the moving block (6), and the size of the groove matches that of the screw (613).

8. The lower limb training device for preventing cardiovascular and cerebrovascular diseases according to claim 7, characterized in that: One end of the slide bar (65) is slidably connected to a third convex plate (69), and the third convex plate (69) is fixedly connected to the inner upper surface of the moving block (6). An observation groove (610) is provided on one side of the third convex plate (69), and the observation groove (610) is opened on the upper surface of the moving block (6), and the size of the observation groove (610) matches the size of the slide bar (65). A fourth spring (66) is fixedly connected between the fixed block (67) and the slider (64), and an inclined groove (68) is opened on one side of the magnetic plate (615).

9. A lower limb training device for preventing cardiovascular and cerebrovascular diseases according to claim 8, characterized in that: The inner side wall of the moving block (6) is provided with a sliding groove (614), and the size of the sliding groove (614) matches the size of the second extrusion rod (53).

10. A lower limb training device for preventing cardiovascular and cerebrovascular diseases according to claim 9, characterized in that: The outer wall of the movable rod (5) is fixedly connected to a connecting block (511), the interior of the connecting block (511) is rotatably connected to a blocking rod (512), one end of the blocking rod (512) is fixedly connected to a magnetic block (513), the magnetism of the magnetic block (513) and the magnetism of the magnetic plate (615) are mutually attracted, the two sides of the blocking rod (512) and the inner wall of the connecting block (511) are fixedly connected to torsion springs (515), the inner lower surface of the connecting block (511) is fixedly connected to a baffle (514), and a limiting groove (531) is provided on the outer wall of the second extrusion rod (53).

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