A three-dimensional traction device for improving knee joint rehabilitation effect

Abstract

The present invention relates to the technical field of medical devices, and discloses a three-dimensional traction device for improving the rehabilitation effect of knee joints, comprising a bed board, the four corners of the bottom surface of the bed board are provided with supporting legs, the top surface of the bed board is laterally slidably connected with a traction plate, and the lower end of the right side surface of the traction plate is fixedly installed with a traction bracket, and the traction bracket is provided with a strap for leg binding. The three-dimensional traction device for improving the rehabilitation effect of knee joints can ensure that massage can be performed while traction is performed during knee joint rehabilitation, accelerate the rehabilitation of the knee joint, increase the diversity of rehabilitation methods, and increase the rehabilitation effect. At the same time, it can heat to ensure that the temperature of the knee joint and the surrounding areas of the knee joint are in a suitable rehabilitation exercise temperature range, thereby avoiding the disadvantage of inconvenience in rehabilitation in cold seasons, thereby further increasing the rehabilitation effect of the knee joint, and achieving knee joint rehabilitation in three dimensions of traction, massage and heating.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a three-dimensional traction device for improving the rehabilitation effect of knee joints. Background Art

[0002] The knee joint is composed of the lower end of the femur, the upper end of the tibia and the patella. It is the largest and most complex joint in the human body and one of the parts of the human body that needs important protection. As people age, the knee joint is prone to problems. Traction devices are usually used for knee joint rehabilitation. However, existing knee joint rehabilitation traction devices still have certain defects, such as:

[0003] The "knee joint traction device" with application number CN202120858088.6 can only traction the knee joint when in use, and the knee joint rehabilitation treatment method is single, and massage cannot be performed, resulting in poor knee joint rehabilitation effect. At the same time, it does not have a heating function, and it is difficult to ensure that the temperature of the knee joint and the surrounding areas of the knee joint is in a suitable rehabilitation exercise temperature range, thereby failing to ensure multi-dimensional rehabilitation of the knee joint, which is not conducive to the rehabilitation of the knee joint;

[0004] In view of this, an in-depth study was conducted on the above-mentioned problem, and a three-dimensional traction device was proposed to improve the rehabilitation effect of the knee joint. Summary of the invention

[0005] The purpose of the present invention is to provide a three-dimensional traction device that is convenient for improving the effect of knee joint rehabilitation, so as to solve the problem mentioned in the above background technology that the existing knee joint traction device can only pull the knee joint, the knee joint rehabilitation treatment method is single and cannot massage the knee joint, and it does not have a heating function, and cannot guarantee the rehabilitation of the knee joint from multiple dimensions, which is not conducive to knee joint rehabilitation.

[0006] To achieve the above object, the present invention provides the following technical solution: a three-dimensional traction device for improving the rehabilitation effect of knee joint, comprising a bed board, wherein the bottom surface of the bed board is provided with supporting legs at the four corners.

[0007] The top surface of the bed board is slidably connected with a traction plate in a transverse manner, and a traction bracket is fixedly installed at the lower end of the right side surface of the traction plate, and a strap for binding the legs is provided on the traction bracket;

[0008] A support rod is fixedly installed at the front and rear ends of the left side of the top surface of the bed board, and a top plate is fixedly installed on the top surface of the support rod, a hydraulic cylinder is installed on the top surface of the top plate, and a box is fixedly installed at the output end of the hydraulic cylinder;

[0009] A rotating shaft is provided through the longitudinal bearing at the bottom of the box body, a massage plate is fixedly installed at the bottom end of the rotating shaft, and a massage ball is movably embedded and installed on the bottom surface of the massage plate;

[0010] A cylinder is fixedly provided through the bottom of the box body, and the cylinder body is located on the right side of the rotating shaft, and an air inlet pipe is fixedly provided through the top of the cylinder body, and the air inlet pipe is fixedly provided through the right side wall of the box body, an air outlet pipe is fixedly provided through the bottom of the cylinder body, and an electric heating net is fixedly installed on the inner wall surface of the cylinder body;

[0011] A first fixing plate and a second fixing plate are fixedly installed on the top surface of the box body from left to right in sequence, a rotating rod is provided through a transverse bearing on the first fixing plate, and a driving mechanism is provided on the rotating rod, a shaft is provided through a transverse bearing on the second fixing plate, a screw rod is provided through a transverse bearing on the left side wall of the box body, the screw rod and the shaft rod are connected to the rotating rod through a clutch mechanism, and a power mechanism is provided on the left side of the clutch mechanism;

[0012] A moving mechanism is installed on the screw rod, and the moving mechanism is arranged on the traction plate. A transmission mechanism is arranged on the right end of the shaft rod, and the transmission mechanism is connected to the rotating shaft through a linkage mechanism. An air supply mechanism is arranged on the transmission mechanism, and the air supply mechanism is installed on the cylinder.

[0013] The adoption of the above technical solution facilitates the rehabilitation of the knee joint from multiple dimensions and improves the rehabilitation effect of the knee joint.

[0014] As a preferred technical solution of the present invention, the driving mechanism includes a motor, which is fixedly mounted on the top surface of the housing, and the shaft end of the motor is keyed to a driving shaft, and the driving shaft bearing passes through the top of the housing, and a first bevel gear set is fixedly mounted on the bottom end of the driving shaft, and the first bevel gear set is fixedly sleeved on the surface of the rotating rod.

[0015] By adopting the above technical solution, it is convenient to drive the drive shaft to rotate through the motor, so that the rotating rod is driven to rotate through the first bevel gear set.

[0016] As a preferred technical solution of the present invention, the clutch mechanism includes a slide plate, the bottom surface of the slide plate is laterally slidably connected to the inner bottom surface of the box body, and a mounting frame is fixedly installed on the top surface of the slide plate, and the mounting frame is U-shaped, and the left and right side walls of the mounting frame are respectively provided with a first sleeve and a second sleeve bearing through them, and the first sleeve and the second sleeve are respectively located on the left and right sides of the rotating rod, and the left and right end surfaces of the rotating rod, the right end surface of the first sleeve and the left end surface of the second sleeve are all provided with friction plates, a first square groove is opened inside the first sleeve and the second sleeve, and a first square rod is slidably connected in the first square groove, and the first square rod is coaxially fixedly installed on the right end of the screw rod, a second square groove is opened inside the second sleeve, and a second square rod is slidably connected in the second square groove, and the second square rod is coaxially fixedly installed on the left end of the shaft rod.

[0017] By adopting the above technical solution, it is convenient to drive the mounting frame and the first sleeve and the second sleeve to move by the slide plate, and ensure that when the first sleeve and the second sleeve contact the rotating rod through the friction plate, the first sleeve or the second sleeve is driven to rotate by the rotating rotating rod.

[0018] As a preferred technical solution of the present invention, the power mechanism includes an electric telescopic rod, which is fixedly installed on the left inner wall of the box, and the output end of the electric telescopic rod is fixedly connected to the left side of the slide.

[0019] By adopting the above technical solution, it is convenient to drive the slide plate and the mounting frame to move by the electric telescopic rod.

[0020] As a preferred technical solution of the present invention, the moving mechanism includes a through groove, which is opened inside the traction plate, and the top surface of the through groove is connected to the top surface of the traction plate, a slider is longitudinally slidably connected in the through groove, and the screw rod transversely penetrates the slider, and the screw rod is slidably connected to the slider.

[0021] By adopting the above technical solution, when the first sleeve rotates, the first square slide groove and the first square rod are arranged to drive the screw rod to rotate, so that the slider drives the traction plate and the traction seat to move, thereby achieving traction.

[0022] As a preferred technical solution of the present invention, a sliding sleeve is installed on the left end bearing of the screw rod, and the sliding sleeve is slidably mounted on the outer side of the vertical plate, and the vertical plate is fixedly mounted on the bottom surface of the top plate.

[0023] The above technical solution is adopted to ensure the stability of the screw rod during its movement.

[0024] As a preferred technical solution of the present invention, the transmission mechanism includes a transmission rod, the top end of the transmission rod is connected to the inner top surface bearing of the box body, and a second bevel gear set is fixedly mounted on the transmission rod, and the second bevel gear set is fixedly installed on the right end of the shaft rod, a turntable is coaxially fixedly installed on the bottom end of the shaft rod, and a drive pin is fixedly installed at an eccentric position on the bottom surface of the turntable.

[0025] By adopting the above technical solution, when the second sleeve rotates, the second square slot and the second square rod drive the shaft rod to rotate, and the second bevel gear set drives the transmission rod to rotate, so that the turntable drives the drive pin to produce circular rotation.

[0026] As a preferred technical solution of the present invention, the linkage mechanism includes a linkage plate, which is fixedly installed on the top of the rotating shaft, and a strip drive groove is opened through the linkage plate, the drive pin passes through the strip drive groove, and the diameter of the drive pin is consistent with the width of the strip drive groove.

[0027] By adopting the above technical solution, when the driving pin rotates in a circle, the linkage plate can cooperate with the strip driving groove to drive the rotating shaft and the massage disc to rotate back and forth, so that the massage ball can massage the knee joint.

[0028] As a preferred technical solution of the present invention, the air supply mechanism includes a driving gear, which is fixedly sleeved on the surface of the transmission rod, and the driving gear is meshingly connected with a driven gear, and the driven gear is fixedly sleeved on the surface of the mounting shaft, and the top end of the mounting shaft is connected to the inner top surface bearing of the box body, the mounting shaft bearing passes through the top center of the cylinder, and a fan is coaxially fixedly mounted on the bottom end of the mounting shaft, and the fan is located above the electric heating network.

[0029] By adopting the above technical solution, the driving gear is driven to rotate when the transmission rod rotates, so that the driven gear drives the installation shaft and the fan to rotate, so that the air is blown downward and heated by the electric heating network to achieve the blowing of hot air.

[0030] As a preferred technical solution of the present invention, the gear ratio between the driving gear and the driven gear is 4:1.

[0031] The above technical solution is adopted to facilitate the driving gear to drive the driven gear to rotate faster.

[0032] Compared with the prior art, the beneficial effects of the present invention are as follows: the three-dimensional traction device for improving the rehabilitation effect of the knee joint can ensure that massage can be performed while traction is being performed during knee joint rehabilitation, thereby accelerating the rehabilitation of the knee joint, increasing the diversity of rehabilitation methods, and increasing the rehabilitation effect. At the same time, heating can be performed to ensure that the temperature of the knee joint and the surrounding areas of the knee joint is in a suitable rehabilitation exercise temperature range, thereby avoiding the disadvantage of inconvenience in rehabilitation in cold seasons, thereby further increasing the rehabilitation effect of the knee joint, and achieving knee joint rehabilitation in three dimensions of traction, massage and heating;

[0033] 1. The patient can lie flat on the bed board, place his feet on the traction bracket, fix his legs with straps, and drive the electric telescopic rod to drive the slide plate to move to the right, so that the first sleeve moves to the right with the mounting frame, so that the friction plate on the first sleeve contacts the friction plate on the left end of the rotating rod, and the motor is started to rotate the drive shaft, and the rotating rod is driven to rotate through the first bevel gear set, thereby driving the first sleeve to rotate, and the relative limiting effect of the first square slide groove and the first square rod drives the screw rod to rotate synchronously, so that the slider drives the traction plate and the traction bracket to move to the left, so as to achieve traction;

[0034] 2. Start the hydraulic cylinder to move the box downward, so that the rotating shaft and the massage disc move downward to contact the patient's knee, then start the electric telescopic rod to drive the slide plate to move the mounting frame to the left, so that the second sleeve moves to the left, so that the friction plate on the second sleeve contacts the friction plate at the right end of the rotating rod, and ensure that the second sleeve is driven to rotate when the rotating rod rotates, and the shaft rod is driven to rotate through the relative limiting effect of the second square slide groove and the second square rod, thereby driving the transmission rod to rotate through the second bevel gear set, and the rotation of the transmission rod drives the driving pin to generate circular rotation through the rotating disc, and under the cooperation of the driving pin and the strip driving groove, the linkage plate drives the rotating shaft and the massage disc to generate reciprocating rotation, so that the massage ball reciprocates with the massage disc to achieve massage and kneading of the knee joint, thereby improving the rehabilitation effect of the knee joint;

[0035] 3. The driving gear rotates as the transmission rod rotates. The driven gear drives the installation shaft to rotate the fan, so that the external air enters the cylinder through the air inlet pipe and moves downward. At the same time, it is heated by the electric heating network, so that the hot air is discharged to the patient's knee joint and the surrounding area through the water outlet pipe, ensuring that the temperature of the knee joint and the surrounding area of ​​the knee joint is in the appropriate temperature range for rehabilitation exercise, further improving the rehabilitation effect of the knee joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 It is a schematic diagram of the connection structure of the box body, the rotating shaft and the cylinder body of the present invention;

[0038] Figure 3It is a schematic diagram of the cross-sectional structure of the box body of the present invention;

[0039] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0040] Figure 5 It is a schematic diagram of the cross-sectional connection structure of the mounting frame and the first sleeve and the second sleeve of the present invention;

[0041] Figure 6 This is a schematic diagram of the connection structure between the slider, the through slot and the screw rod of the present invention;

[0042] Figure 7 This is a schematic diagram of the connection structure between the storage sleeve, the screw rod and the vertical plate of the present invention;

[0043] Figure 8 This is a schematic diagram of the connection structure between the driving gear and the driven gear of the present invention;

[0044] Fig. 9 It is a schematic diagram of the connection structure of the driving pin, the rotating disk and the strip-shaped driving groove of the present invention;

[0045] Fig.10 It is a schematic diagram of the cross-sectional structure of the cylinder of the present invention.

[0046] In the figure: 1, bed board; 2, traction board; 3, traction bracket; 4, support rod; 5, top board; 6, box body; 7, rotating shaft; 8, massage plate; 9, massage ball; 10, cylinder body; 11, air inlet pipe; 12, air outlet pipe; 13, electric heating net; 14, first fixed plate; 15, rotating rod; 16, screw rod; 17, second fixed plate; 18, shaft rod; 19, motor; 20, driving shaft; 21, first bevel gear set; 22, slide plate; 23, mounting frame; 24, first sleeve; 25. First square slide; 26. First square rod; 27. Second sleeve; 28. Second square slide; 29. ​​Second square rod; 30. Electric telescopic rod; 31. Through groove; 32. Sliding block; 33. Sliding sleeve; 34. Vertical plate; 35. Transmission rod; 36. Second bevel gear set; 37. Turntable; 38. Driving pin; 39. Linkage plate; 40. Strip driving groove; 41. Driving gear; 42. Driven gear; 43. Mounting shaft; 44. Fan; 45. Hydraulic cylinder. DETAILED DESCRIPTION

[0047] 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.

[0048] See also Figure 1 - Fig.10 The technical solution of the present invention is: a three-dimensional traction device for improving the rehabilitation effect of knee joint, comprising a bed board 1, and support legs are arranged at the four corners of the bottom surface of the bed board 1.

[0049] The top surface of the bed board 1 is laterally slidably connected with a traction board 2, and a traction bracket 3 is fixedly installed at the lower end of the right side surface of the traction board 2, and a strap for binding the legs is provided on the traction bracket 3;

[0050] A support rod 4 is fixedly installed at the front and rear ends of the left side of the top surface of the bed board 1, and a top plate 5 is fixedly installed on the top surface of the support rod 4, a hydraulic cylinder 45 is installed on the top surface of the top plate 5, and a box 6 is fixedly installed on the output end of the hydraulic cylinder 45;

[0051] A rotating shaft 7 is provided through the longitudinal bearing at the bottom of the box body 6, a massage plate 8 is fixedly installed at the bottom end of the rotating shaft 7, and a massage ball 9 is movably embedded and installed on the bottom surface of the massage plate 8;

[0052] A cylinder 10 is fixedly provided through the bottom of the box body 6, and the cylinder body 10 is located on the right side of the rotating shaft 7, and an air inlet pipe 11 is fixedly provided through the top of the cylinder body 10, and the air inlet pipe 11 is fixedly provided through the right side wall of the box body 6, an air outlet pipe 12 is fixedly provided through the bottom of the cylinder body 10, and an electric heating net 13 is fixedly installed on the inner wall surface of the cylinder body 10;

[0053] The top surface of the box body 6 is fixedly installed with a first fixing plate 14 and a second fixing plate 17 from left to right in sequence. A rotating rod 15 is provided through a transverse bearing on the first fixing plate 14, and a driving mechanism is provided on the rotating rod 15. A shaft 18 is provided through a transverse bearing on the second fixing plate 17. A screw rod 16 is provided through a transverse bearing on the left side wall of the box body 6. The screw rod 16 and the shaft rod 18 are connected to the rotating rod 15 through a clutch mechanism, and a power mechanism is provided on the left side of the clutch mechanism.

[0054] A moving mechanism is installed on the screw rod 16, and the moving mechanism is arranged on the traction plate 2. A transmission mechanism is arranged on the right end of the shaft rod 18, and the transmission mechanism is connected to the rotating shaft 7 through a linkage mechanism. An air supply mechanism is arranged on the transmission mechanism, and the air supply mechanism is installed on the cylinder 10.

[0055] The driving mechanism includes a motor 19, which is fixedly mounted on the top surface of the housing 6, and the shaft end of the motor 19 is keyed to a driving shaft 20, and the bearing of the driving shaft 20 passes through the top of the housing 6, and a first bevel gear set 21 is fixedly mounted on the bottom end of the driving shaft 20, and the first bevel gear set 21 is fixedly sleeved on the surface of the rotating rod 15;

[0056] The clutch mechanism includes a slide plate 22, the bottom surface of the slide plate 22 is slidably connected with the inner bottom surface of the box body 6, and a mounting frame 23 is fixedly installed on the top surface of the slide plate 22, and the mounting frame 23 is U-shaped, and the left and right side walls of the mounting frame 23 are respectively provided with a first sleeve 24 and a second sleeve 27, and the first sleeve 24 and the second sleeve 27 are respectively located on the left and right sides of the rotating rod 15, and the left and right end surfaces of the rotating rod 15, the right end surface of the first sleeve 24 and the left end surface of the second sleeve 27 are provided with friction plates, and the first sleeve 24 and the second sleeve 27 are provided with a first square groove 25 inside, and a first square rod 26 is slidably connected in the first square groove 25, and the first square rod 26 is coaxially fixedly installed on the right end of the screw rod 16, and a second square groove 28 is provided inside the second sleeve 27, and a second square rod 29 is slidably connected in the second square groove 28, and the second square rod 29 is coaxially fixedly installed on the left end of the shaft rod 18;

[0057] The power mechanism includes an electric telescopic rod 30, which is fixedly mounted on the left inner wall of the box body 6, and the output end of the electric telescopic rod 30 is fixedly connected to the left side of the slide plate 22;

[0058] The moving mechanism includes a through slot 31, which is opened inside the traction plate 2, and the top surface of the through slot 31 is connected to the top surface of the traction plate 2. A slider 32 is longitudinally slidably connected in the through slot 31, and the screw rod 16 is transversely arranged to penetrate the slider 32, and the screw rod 16 is slidably connected to the slider 32. A sleeve 33 is installed on the left end bearing of the screw rod 16, and the sleeve 33 is slidably sleeved on the outer side of the vertical plate 34, and the vertical plate 34 is fixedly installed on the bottom surface of the top plate 5;

[0059] The transmission mechanism includes a transmission rod 35, the top end of which is connected to the inner top surface bearing of the box body 6, and a second bevel gear set 36 is fixedly mounted on the transmission rod 35, and the second bevel gear set 36 is fixedly mounted on the right end of the shaft rod 18, a rotating disk 37 is coaxially fixedly mounted on the bottom end of the shaft rod 18, and a driving pin 38 is fixedly mounted at an eccentric position on the bottom surface of the rotating disk 37;

[0060] The linkage mechanism includes a linkage plate 39, which is fixedly mounted on the top of the rotating shaft 7, and a strip-shaped driving groove 40 is formed on the linkage plate 39, and a driving pin 38 is arranged through the strip-shaped driving groove 40, and the diameter of the driving pin 38 is consistent with the width of the strip-shaped driving groove 40;

[0061] The air supply mechanism includes a driving gear 41, which is fixedly sleeved on the surface of the transmission rod 35, and the driving gear 41 is meshed with a driven gear 42, the gear ratio of the driving gear 41 to the driven gear 42 is 4:1, the driven gear 42 is fixedly sleeved on the surface of the mounting shaft 43, and the top end of the mounting shaft 43 is connected to the inner top surface bearing of the box body 6, the mounting shaft 43 bearing passes through the top center of the cylinder 10, and the bottom end of the mounting shaft 43 is coaxially fixedly mounted with a fan 44, and the fan 44 is located above the electric heating network 13.

[0062] Working principle: When in use, the patient lies flat on the bed board 1, and places the feet on the traction bracket 3, fixes the legs with straps, and then starts the electric telescopic rod 30 to make the slide plate 22 drive the mounting frame 23 to move to the right, so that the first sleeve 24 and the second sleeve 27 move to the right synchronously until the friction plate on the first sleeve 24 is tightly in contact with the friction plate at the left end of the rotating rod 15;

[0063] Then, the motor 19 is started to rotate the drive shaft 20, and the rotating rod 15 is driven to rotate through the first bevel gear set 21, and the first sleeve 24 is driven to rotate synchronously at this time, and the screw rod 16 is driven to rotate through the relative limiting effect of the first square slide groove 25 and the first square rod 26, so that the slider 32 threadedly connected with the screw rod 16 drives the traction plate 2 to move leftward, so that the traction plate 2 drives the traction bracket 3 to move leftward synchronously, and then the patient's leg is pulled to achieve the rehabilitation of the knee joint;

[0064] Then, the hydraulic cylinder 45 is activated to move the box 6 downward, so that the rotating shaft 7 and the massage plate 8 move downward synchronously, and at the same time, the screw rod 16 drives the slider 32 to move downward along the through slot 31, and drives the sliding sleeve 33 to move downward along the vertical plate 34, until the massage plate 8 contacts the patient's knee joint;

[0065] The electric telescopic rod 30 is started to make the slide plate 22 drive the mounting frame 23 to move leftward, so that the first sleeve 24 and the second sleeve 27 move leftward synchronously until the friction plate on the second sleeve 27 is tightly in contact with the friction plate on the right end of the rotating rod 15. At this time, when the rotating rod 15 rotates, the relative limiting effect of the second square slide groove 28 and the second square rod 29 drives the shaft rod 18 to rotate;

[0066] When the shaft 18 rotates, the transmission rod 35 is driven to rotate through the second bevel gear set 36. When the transmission rod 35 rotates, the driving pin 38 is driven to rotate in a circle through the rotating disk 37. During the circular rotation of the driving pin 38, the linkage plate 39 cooperates with the strip-shaped driving groove 40 to drive the rotating shaft 7 and the massage disk 8 to reciprocate, so that the massage ball 9 massages the knee joint.

[0067] When the transmission rod 35 rotates, it drives the driving gear 41 to rotate, so that the driven gear 42 meshing with the driving gear 41 drives the mounting shaft 43 and the fan 44 to rotate synchronously, so that air is blown downward, ensuring that the external air enters the cylinder 10 through the air inlet pipe 11, and at the same time, the gas flowing downward is heated by the activated electric heating network 13, so that the hot air is discharged to the patient's knee joint through the air outlet pipe 12, ensuring that the temperature of the knee joint and the surrounding area of ​​the knee joint is in a suitable temperature range for rehabilitation exercise;

[0068] At the same time, the above-mentioned method performs traction, massage and heating on the knee joint in three dimensions to ensure the rehabilitation effect of the knee joint. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0069] 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. A three-dimensional traction device for improving the rehabilitation effect of a knee joint, comprising a bed board (1), wherein the four corners of the bottom surface of the bed board (1) are provided with support legs, characterized in that: The top surface of the bed board (1) is laterally slidably connected to a traction plate (2), and a traction bracket (3) is fixedly mounted on the lower end of the right side surface of the traction plate (2), and a strap for binding the legs is provided on the traction bracket (3); Support rods (4) are fixedly mounted at the front and rear ends of the left side of the top surface of the bed board (1), and a top plate (5) is fixedly mounted on the top surface of the support rods (4), a hydraulic cylinder (45) is mounted on the top surface of the top plate (5), and a box (6) is fixedly mounted on the output end of the hydraulic cylinder (45); A rotating shaft (7) is provided through a longitudinal bearing at the bottom of the box body (6); a massage plate (8) is fixedly mounted on the bottom end of the rotating shaft (7); and a massage ball (9) is movably embedded on the bottom surface of the massage plate (8); A cylinder (10) is fixedly provided through the bottom of the box (6), and the cylinder (10) is located on the right side of the rotating shaft (7); an air inlet pipe (11) is fixedly provided through the top of the cylinder (10), and the air inlet pipe (11) is fixedly provided through the right side wall of the box (6); an air outlet pipe (12) is fixedly provided through the bottom of the cylinder (10), and an electric heating net (13) is fixedly installed on the inner wall surface of the cylinder (10); A first fixing plate (14) and a second fixing plate (17) are fixedly mounted on the top surface of the box body (6) from left to right in sequence; a rotating rod (15) is provided through a transverse bearing on the first fixing plate (14), and a driving mechanism is provided on the rotating rod (15); a shaft rod (18) is provided through a transverse bearing on the second fixing plate (17); a screw rod (16) is provided through a transverse bearing on the left side wall of the box body (6); the screw rod (16) and the shaft rod (18) are transmission-connected to the rotating rod (15) via a clutch mechanism, and a power mechanism is provided on the left side of the clutch mechanism; A moving mechanism is installed on the screw rod (16), and the moving mechanism is arranged on the traction plate (2); a transmission mechanism is arranged on the right end of the shaft rod (18), and the transmission mechanism is connected to the rotating shaft (7) through a linkage mechanism; an air supply mechanism is arranged on the transmission mechanism, and the air supply mechanism is installed on the cylinder (10); The clutch mechanism comprises a slide plate (22), the bottom surface of the slide plate (22) being slidably connected to the inner bottom surface of the box body (6) in a transverse direction, and a mounting frame (23) being fixedly mounted on the top surface of the slide plate (22), and the mounting frame (23) being U-shaped, and a first sleeve (24) and a second sleeve (27) being respectively provided on the left and right side walls of the mounting frame (23) in a bearing-like manner, and the first sleeve (24) and the second sleeve (27) being respectively located on the left and right sides of the rotating rod (15), and the left and right end surfaces of the rotating rod (15), the right end surface of the first sleeve (24) and the second sleeve (27) The left end surface of each of the first and second sleeves (27) is provided with a friction plate, a first square slide groove (25) is provided inside the first sleeve (24) and the second sleeve (27), a first square rod (26) is slidably connected inside the first square slide groove (25), and the first square rod (26) is coaxially fixedly installed on the right end of the screw rod (16), a second square slide groove (28) is provided inside the second sleeve (27), a second square rod (29) is slidably connected inside the second square slide groove (28), and the second square rod (29) is coaxially fixedly installed on the left end of the shaft rod (18).

2. A three-dimensional traction device for improving knee joint rehabilitation effect according to claim 1, characterized in that: The driving mechanism comprises a motor (19), the motor (19) being fixedly mounted on the top surface of the housing (6), and the shaft end of the motor (19) being key-connected to a driving shaft (20), and the bearing of the driving shaft (20) passing through the top of the housing (6), and a first bevel gear set (21) being fixedly mounted on the bottom end of the driving shaft (20), and the first bevel gear set (21) being fixedly sleeved on the surface of the rotating rod (15).

3. A three-dimensional traction device for improving knee joint rehabilitation effect according to claim 1, characterized in that: The power mechanism comprises an electric telescopic rod (30), the electric telescopic rod (30) being fixedly mounted on the left inner wall surface of the box body (6), and the output end of the electric telescopic rod (30) being fixedly connected to the left side surface of the slide plate (22).

4. A three-dimensional traction device for improving knee joint rehabilitation effect according to claim 1, characterized in that: The moving mechanism comprises a through slot (31), the through slot (31) being opened inside the traction plate (2), and the top surface of the through slot (31) being intersected with the top surface of the traction plate (2), a slider (32) being longitudinally slidably connected inside the through slot (31), and the screw rod (16) being transversely penetrated through the slider (32), and the screw rod (16) being slidably connected to the slider (32).

5. A three-dimensional traction device for improving knee joint rehabilitation effect according to claim 4, characterized in that: A sliding sleeve (33) is installed on the left end bearing of the screw rod (16), and the sliding sleeve (33) is slidably mounted on the outer side of the vertical plate (34), and the vertical plate (34) is fixedly mounted on the bottom surface of the top plate (5).

6. A three-dimensional traction device for improving knee joint rehabilitation effect according to claim 1, characterized in that: The transmission mechanism comprises a transmission rod (35), the top end of the transmission rod (35) is connected to the inner top surface bearing of the housing (6), a second bevel gear set (36) is fixedly mounted on the transmission rod (35), and the second bevel gear set (36) is fixedly mounted on the right end of the shaft rod (18), a rotating disk (37) is coaxially fixedly mounted on the bottom end of the shaft rod (18), and a driving pin (38) is fixedly mounted at an eccentric position on the bottom surface of the rotating disk (37).

7. A three-dimensional traction device for improving knee joint rehabilitation effect according to claim 6, characterized in that: The linkage mechanism comprises a linkage plate (39), the linkage plate (39) being fixedly mounted on the top end of the rotating shaft (7), and a strip-shaped driving groove (40) being formed through the linkage plate (39), the driving pin (38) being arranged through the strip-shaped driving groove (40), and the diameter of the driving pin (38) being consistent with the width of the strip-shaped driving groove (40).

8. A three-dimensional traction device for improving knee joint rehabilitation effect according to claim 6, characterized in that: The air supply mechanism comprises a driving gear (41), the driving gear (41) being fixedly sleeved on the surface of the transmission rod (35), and the driving gear (41) being meshingly connected with a driven gear (42), the driven gear (42) being fixedly sleeved on the surface of a mounting shaft (43), and the top end of the mounting shaft (43) being connected to a bearing on the inner top surface of the box body (6), the bearing of the mounting shaft (43) passing through the top center of the cylinder body (10), and a fan (44) being coaxially fixedly mounted on the bottom end of the mounting shaft (43), and the fan (44) being located above the electric heating net (13).

9. A three-dimensional traction device for improving knee joint rehabilitation effect according to claim 8, characterized in that: The gear ratio between the driving gear (41) and the driven gear (42) is 4:1.

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