A flexible traction device

Abstract

The present invention discloses a flexible traction device, comprising a reduction motor, wherein the output shaft of the reduction motor is rotatably installed with a connecting plate and fixes a driving gear, there is friction force between the connecting plate and the driving gear, the buffer gear is rotatably installed on the connecting plate, the driving gear meshes with the buffer gear, a clockwork spring is arranged between the support shaft and the base, the support shaft fixes a driven gear and a winding wheel, a guide rod is fixed on the base, a support plate is slidably installed on the guide rod, a guide wheel one is rotatably installed on the support plate, an upper fixed plate is fixed on the upper end of the guide rod, a support spring is arranged between the support plate and the base, a compression spring is arranged between the support and the upper fixed plate, a guide wheel two is rotatably installed on the upper end of the support plate, the other end of the traction rope passes around the guide wheel one from the winding wheel and then goes out from the guide wheel two, when traction treatment is implemented, the buffer gear meshes with the driven gear, and when no treatment is implemented, the buffer gear is disengaged from the driven gear, so that medical staff can pull the traction rope conveniently, and flexible traction is provided through elastic deformation of the compression spring.

Description

Technical Field

[0001] The invention belongs to the technical field of medical equipment and relates to a flexible traction device used for traction treatment of patients with cervical and lumbar vertebrae diseases. Background Art

[0002] As the pace of life quickens, life pressure increases, and at the same time, the functions of some electronic products continue to become more powerful, long-term use of electronic products causes cervical deformation, and the number of patients with cervical and lumbar diseases increases year by year. At present, traction beds are commonly used to treat cervical and lumbar diseases. The traction equipment currently used adopts a rigid-driven traction method. During the treatment, the rigid traction force makes the patient very uncomfortable, and when the patient starts traction, traction is instantly applied to the patient's cervical or lumbar straps, which can easily cause secondary injuries to the patient. Summary of the invention

[0003] The purpose of the present invention is to provide a flexible traction device in which a reduction motor drives a driving gear to mesh with a buffer gear, traction is performed when the buffer gear contacts a driven gear, a traction rope passes through a guide wheel and then compresses a compression spring to achieve flexible traction, the traction force is controlled and the upper limit of the force is protected according to the deformation of the compression spring, and the traction rope is quickly recovered after the traction treatment is completed.

[0004] The technical solution of the present invention is implemented as follows: A flexible traction device comprises a base 1, a reduction motor 2, and a control system 8, wherein the reduction motor 2 is fixed on the base 1, the output shaft of the reduction motor 2 is rotatably mounted on a connecting plate 301 and fixes a driving gear 302, there is friction between the connecting plate 301 and the driving gear 302, a buffer gear 303 is rotatably mounted on the connecting plate 301, the driving gear 302 is meshed with the buffer gear 303, when the buffer gear 303 contacts a driven gear 401, the buffer gear 303 is meshed with the driven gear 401, a support shaft 404 is rotatably mounted on the base 1, a clockwork spring 405 is arranged between the support shaft 404 and the base 1, the support shaft 404 fixes the driven gear 401 and a winding wheel 402, a traction rope 403 is wound around the winding wheel 402 and one end of the traction rope 403 is fixed;

[0005] The guide rod 501 is vertically arranged along the up and down directions, and the lower end of the guide rod 501 is fixed on the base 1. The guide rod 501 is slidably installed with a support plate 503, and the lower end of the support plate 503 is rotatably installed with a guide wheel 1 506. The upper end of the guide rod is fixed with an upper fixed plate 507. A support spring 502 is arranged between the support plate 503 and the base, and a compression spring 504 is arranged between the support plate 503 and the upper fixed plate 507. The upper end of the support plate 503 is rotatably installed with a guide wheel 2 604. The other end of the pulling rope 403 passes around the guide wheel 1 506 from the winding wheel 402 and then comes out from the guide wheel 2 604. The reduction motor 2 is connected to the control system through a line.

[0006] Preferably, the rear end of the support plate 503 is fixed with a connecting plate 508, and the connecting plate 508 is L-shaped. The upper end of the L-shaped vertical side of the connecting plate 508 is fixed to the support plate 503, and the L-shaped horizontal side of the connecting plate 508 is fixed with the moving end of the displacement sensor 509 and the adjusting screw 511. The fixed end of the displacement sensor 509 is fixed to the base 1, and the adjusting screw 511 is arranged along the vertical direction, and the adjusting screw 511 is adjustable at a fixed position along the up and down directions on the connecting plate 508. A contact switch 510 is arranged directly above the adjusting screw 511, and the contact switch 510 is fixed to the base 1. The displacement sensor 509 and the contact switch 510 are respectively connected to the control system 8 through lines.

[0007] Preferably, the structure of the guide wheel 604 rotatably installed on the upper end of the support plate 503 is: the guide device 6 includes a support 601, a connecting plate 602, a protective wheel 603, and a guide wheel 604. The lower end of the support 601 is fixed on the connecting plate 602, and the connecting plate 602 is fixed on the upper fixed plate 507. The guide wheel 604 is rotatably installed on the support 601, and the protective wheel 603 is rotatably installed on the support 601 at the upper front side of the guide wheel 604 to prevent the pulling rope 403 from falling off. The upper fixed plate 507 is provided with holes that penetrate from top to bottom for the pulling rope 403 to pass through without contacting the pulling rope 403.

[0008] Preferably, the base 1 includes a bottom plate 101, a vertical plate 102, a contact switch 103, and a vertical plate 104. The reduction motor 2 is fixedly mounted on the vertical plate 102. The output shaft of the reduction motor 2 passes through the vertical plate 102 and the connecting plate 301 to fix the driving gear 302. The left end surface of the vertical plate 102 is equipped with an electric shock switch 103. The vertical plate 102 and the vertical plate 104 are fixed on the bottom plate 101. The reduction motor 2 and the electric shock switch 103 are connected to the control system through circuits. The system is connected so that when the connecting plate 301 rotates clockwise and squeezes the electric shock switch 103, the control system 8 controls the reduction motor 2 to stop rotating. The front and rear ends of the support shaft 404 are rotatably mounted on the vertical plate 102 and the vertical plate 2 104 respectively. The spring box 406 is fixed on the vertical plate 2 104. The control system 8 is fixedly mounted on the bottom plate 101. The lower end of the guide rod 501 is fixed on the bottom plate 101. The fixed end of the displacement sensor 509 and the contact switch 2 510 are fixed on the vertical plate 102.

[0009] Preferably, there are two guide rods 501, and the upper ends of the guide rods 501, the upper ends of the vertical plate 102, and the upper ends of the vertical plate 2 104 are jointly fixed to the upper fixed plate 507. The lower end of the compression spring 504 is fixed at the center position of the upper end of the support plate 503. The compression spring 504 is located between the support plate 503 and the upper fixed plate 507. The upper end of the compression spring 504 contacts the upper fixed plate 507. A support spring 502 is sleeved on each guide rod 501, and the support spring 502 is located between the base plate 101 and the support plate 503.

[0010] Preferably, two bracket plates 505 are fixed on the lower end surface of the support plate 503 located between the two guide rods 501 , and the two bracket plates 505 are arranged in parallel. The two bracket plates 505 respectively fix the front end and the rear end of the guide shaft 512 , and the guide wheel 506 is slung around the guide shaft 512 .

[0011] Preferably, after the support shaft 404 extends backward out of the second vertical plate 104 , the rear end of the support shaft 404 is fixed to the inner end of the clockwork spring 405 , and the outer end of the clockwork spring 405 is fixed to the spring box 406 .

[0012] Preferably, the flexible traction device further comprises a power supply 7 , which is fixedly mounted on the base plate 101 , and supplies power to the reduction motor 2 and the control system 8 .

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] The present invention is used for traction treatment of the patient's cervical or lumbar vertebrae. The reduction motor drives the connecting plate and the driving gear to rotate, the driving gear meshes with the buffer gear, and the buffer gear is rotatably installed on the connecting plate. There is a friction wheel between the connecting plate and the driving gear, so that when the patient is tractioned, the reduction motor drives the connecting plate to rotate to realize the buffer gear driving the winding wheel to rotate, and the traction rope pulls the strap of the patient's treatment part. After the treatment is over, the connecting plate is reversed to quickly disengage the winding wheel, which is convenient for medical staff to pull and operate the winding wheel; the spring spring mechanism is used to drive the winding wheel to be quickly recovered; the guide wheel adopts a compression spring downward pressing structure, so that the compression spring is elastically deformed during the traction process to provide flexible traction, and the spring deformation amount is used to drive the adjustment lead screw to squeeze the contact switch 2, so as to adjust the patient's traction force limit value and protect the patient's safety. Therefore, a good treatment effect is guaranteed when the patient is undergoing traction treatment, and a good buffering performance can be maintained at the beginning and end, and no secondary injury will be caused to the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the flexible traction device.

[0016] Figure 2 It is a top view of the flexible traction device.

[0017] Figure 3 It is a structural diagram of the active linkage mechanism installed on the reduction motor.

[0018] Figure 4 It is a structural diagram of the driven mechanism.

[0019] Figure 5 It is a structural schematic diagram of the buffer device.

[0020] Figure 6 It is a structural schematic diagram of the guide device.

[0021] Figure 7 It is a structural schematic diagram of the support plate connected to the displacement sensor.

[0022] Description of reference numerals:

[0023] Base 1, reduction motor 2, active linkage mechanism 3, driven mechanism 4, buffer device 5, guide device 6, power supply 7, control system 8, bottom plate 101, vertical plate 102, contact switch 1 103, vertical plate 2 104, connecting plate 301, active gear 302, buffer gear 303, driven gear 401, winding wheel 402, pulling rope 403, supporting shaft 404, clockwork spring 405, spring box 406, guide rod 501, supporting spring 502, supporting plate 503, compression spring 504, bracket plate 505, guide wheel 1 506, upper fixing plate 507, connecting plate 1 508, displacement sensor 509, contact switch 2 510, adjusting screw rod 511, guide shaft 512, support 601, connecting plate 2 602, protection wheel 603, guide wheel 2 604. DETAILED DESCRIPTION

[0024] like Figure 1-7 The flexible traction device of the present invention comprises a base 1, a reduction motor 2, an active linkage mechanism 3, a driven mechanism 4, a buffer device 5, a guide device 6, a power supply 7 and a control system 8. The base 1 is used to support the reduction motor 2, the power supply 7 and the control system 8. Figure 5The up, down, left, and right directions of the present application are defined in order to describe the present application. The base 1 includes a bottom plate 101, a vertical plate 102, a contact switch 103, and a vertical plate 104. The reduction motor 2 is fixedly mounted on the vertical plate 102. The output shaft of the reduction motor 1 is connected to the active linkage mechanism 3. The output shaft of the reduction motor 2 passes through the vertical plate 102 and the connecting plate 301 to fix the driving gear 302. There is friction between the connecting plate 301 and the driving gear 302. An electric shock switch 103 is installed on the left end face of the vertical plate 102. The vertical plate 102 and the vertical plate 104 are fixed on the bottom plate 101. The reduction motor 2 and the electric shock switch 103 are respectively connected to the control system through lines, so that when the connecting plate 301 rotates clockwise and squeezes the electric shock switch 103, the control system controls the reduction motor 2 to stop. The power supply 7 and the control system 8 are fixedly mounted on the bottom plate 101.

[0025] The active linkage mechanism 3 includes a connecting plate 301, a driving gear 302 and a buffer gear 303. The driving gear 302 and the buffer gear 303 are respectively installed on the connecting plate 301 through a bearing. There is friction between the front end face of the driving gear 302 and the connecting plate 301. The outer ring of the bearing on which the connecting plate 301 is installed is interference fit with the inner hole of the connecting plate 301. The outer ring of the bearing on which the connecting plate 301 is installed contacts the end face of the driving gear 302 to generate friction between the front end face of the driving gear 302 and the connecting plate 301. The driving gear 302 is meshed with the buffer gear 303. The reduction motor 2 drives the driving gear 302 to rotate in forward and reverse rotations. The connecting plate 301 is driven to rotate clockwise or counterclockwise through the friction between the driving gear 302 and the connecting plate 301. When the reduction motor 2 drives the connecting plate 301 to rotate clockwise and touches the electric shock switch 103, the control system 8 controls the reduction motor 2 to cut off the power and stop working. When the reduction motor 2 is started again, it rotates in the opposite direction and disengages from the electric shock switch 103 to perform pulling work.

[0026] The driven mechanism 4 includes a driven gear 401, a winding wheel 402, a pulling rope 403, a support shaft 404, a clockwork spring 405, and a spring box 406. When the buffer gear 303 contacts the driven gear 401 of the driven mechanism 4, the buffer gear 303 meshes with the driven gear 401, and the front and rear ends of the support shaft 404 are rotatably installed on the vertical plate 102 and the vertical plate 2 104 respectively. The support shaft 404 is fixedly installed with the driven gear 401 and the winding wheel 402. The pulling rope 403 is wound around the winding wheel 402 and one end of the pulling rope 403 is fixed. After the support shaft 404 extends backward from the vertical plate 2 104, the rear end of the support shaft 404 fixes the inner end of the clockwork spring 405, and the outer end of the clockwork spring 405 is fixed on the spring box 406, and the spring box 406 is fixed on the vertical plate 2 104.

[0027] The buffer device 5 includes a guide rod 501, a support spring 502, a support plate 503, a compression spring 504, a bracket plate 505, a guide wheel 1 506, an upper fixing plate 507, a connecting plate 1 508, a displacement sensor 509, a contact switch 2 510, an adjusting screw rod 511, and a guide shaft 512. The lower ends of the two guide rods 501 arranged in parallel with each other in the vertical direction are fixed on the bottom plate 101, and the upper ends of the guide rods 501, the upper ends of the vertical plate 102, and the upper ends of the vertical plate 2 104 are fixed on the bottom plate 101. The upper fixing plate 507 is fixed together, and the support plate 503 is connected to the two guide rods 501 in a sliding manner along the up and down direction. The lower end of the compression spring 504 is fixed at the center position of the upper end of the support plate 503. The compression spring 504 is located between the support plate 503 and the upper fixing plate 507. The upper end of the compression spring 504 contacts the upper fixing plate 507. A support spring 502 is sleeved on each guide rod 501. The support spring 502 is located between the bottom plate 101 and the support plate 503. Two bracket plates 505 are fixed on the lower end surface between the two guide rods 501. The two bracket plates 505 are arranged in parallel. The two bracket plates 505 fix the front end and the rear end of the guide shaft 512 respectively. The guide wheel 506 is looped on the guide shaft 512. The rear end of the support plate 503 is fixed with a connecting plate 508. The connecting plate 508 is L-shaped. The upper end of the L-shaped vertical edge of the connecting plate 508 is fixed on the support plate 503. The L-shaped horizontal edge of the connecting plate 508 fixes the displacement sensor 50 9, the movable end and the adjusting screw rod 511 of the displacement sensor 509 are fixed on the vertical plate 102, the adjusting screw rod 511 is arranged along the vertical direction, and the adjusting screw rod 511 is adjustable along the fixed position in the up and down directions on the connecting plate 508, a contact switch 2 510 is arranged directly above the adjusting screw rod 511, and the contact switch 2 510 is fixed on the vertical plate 102, and the displacement sensor 509 and the contact switch 2 510 are connected to the control system through lines respectively.

[0028] The upper fixed plate 507 is provided with a guide device 6, which includes a support 601, a second connecting plate 602, a protection wheel 603, and a second guide wheel 604. The lower end of the support 601 is fixed on the second connecting plate 602, and the second connecting plate 602 is fixed on the upper fixed plate 507. The second guide wheel 604 is rotatably mounted on the support 601, and the protection wheel 603 is rotatably mounted on the support 601 at the upper front side of the second guide wheel 604 to prevent the pulling rope 403 from falling off. The upper fixed plate 507 is provided with holes that penetrate from top to bottom for the pulling rope 403 to pass through without contacting the pulling rope 403.

[0029] The other end of the pulling rope 403 passes through the guide wheel 1 506 from the winding wheel 402 , passes through the hole set on the fixing plate 507 , and then comes out from the guide wheel 2 604 .

[0030] The power supply 7 supplies power to the reduction motor 2 and the control system 8 .

[0031] When the patient needs traction treatment, the flexible traction device is fixed on the bed frame, the patient lies on the bed in a supine position, the patient's head or waist is fixed with a strap, the traction rope 403 is pulled out, the winding wheel 402 rotates, the spring spring 405 is deformed by force, the other end of the traction rope 403 is fixed with the strap, and the control system controls the reduction motor 2 to rotate counterclockwise. Due to the friction between the connecting plate 301 and the driving gear 302, the connecting plate 301 and the driving gear 302 rotate synchronously. When the buffer gear 303 contacts the driven gear 401 of the driven mechanism 4, the buffer gear 303 meshes with the driven gear 401. At this time, the connecting plate 301 is due to the buffer gear Due to the limitation of 303, the connecting plate 301 cannot continue to rotate counterclockwise and slips, driving the winding wheel 402 to rotate, and the pulling rope 403 pulls the patient's fixed strap, the support plate 503 moves up, the compression spring 504 is compressed, and the displacement sensor 509 detects the displacement of the support plate 503. The control system calculates the traction force of the strap according to the stiffness of the compression spring 504 and the compression deformation of the compression spring 504. If the traction force is too large, the upper end of the adjusting screw rod 511 squeezes the contact switch 2 510, and the reduction motor 2 does not rotate or reverses to protect the patient's safety. By adjusting the fixed position of the adjusting screw rod 511 along the up and down directions, the limit value of the patient's traction force can be adjusted. After the patient treatment is completed, the control system 8 controls the reduction motor 2 to rotate clockwise. Due to the friction between the connecting plate 301 and the driving gear 302, the connecting plate 301 and the driving gear 302 rotate synchronously, and the buffer gear 303 is disengaged from the driven gear 401. Under the restoring force of the compression spring 504 and the restoring force of the clockwork spring 405, the pulling rope 403 is quickly recovered. When the connecting plate 301 rotates clockwise to squeeze the electric shock switch 103, the control system controls the reduction motor 2 to stop.

Claims

1. A flexible traction device, characterized in that: The invention comprises a base (1), a reduction motor (2), and a control system (8), wherein the reduction motor (2) is fixed on the base (1), the output shaft of the reduction motor (2) is rotatably mounted on a connecting plate (301) and fixed with a driving gear (302), friction exists between the connecting plate (301) and the driving gear (302), a buffer gear (303) is rotatably mounted on the connecting plate (301), the driving gear (302) and the buffer gear (303) are meshed, and when the buffer gear (303) is engaged with the slave gear (302), the driving gear (302) and the buffer gear (303) are engaged with each other. When the driven gear (401) contacts, the buffer gear (303) meshes with the driven gear (401), the support shaft (404) is rotatably mounted on the base (1), a spring (405) is provided between the support shaft (404) and the base (1), the support shaft (404) fixes the driven gear (401) and the winding wheel (402), a pulling rope (403) is wound around the winding wheel (402) and one end of the pulling rope (403) is fixed, and a binding strap is fixed to the other end of the pulling rope (403); The guide rod (501) is vertically arranged along the up-down direction, the lower end of the guide rod (501) is fixed on the base (1), the guide rod (501) is slidably installed with a support plate (503), the lower end of the support plate (503) is rotatably installed with a guide wheel 1 (506), the upper end of the guide rod is fixed with an upper fixed plate (507), a support spring (502) is arranged between the support plate (503) and the base, a compression spring (504) is arranged between the support plate (503) and the upper fixed plate (507), the upper end of the support plate (503) is rotatably installed with a guide wheel 2 (604), the other end of the pulling rope (403) is wound around the guide wheel 1 (506) from the winding wheel (402), and then wound out from the guide wheel 2 (604), and the reduction motor (2) is connected to the control system through a line; The support plate (503) is fixed with a connecting plate 1 (508) at the rear end, the connecting plate 1 (508) is L-shaped, the upper end of the L-shaped vertical side of the connecting plate 1 (508) is fixed on the support plate (503), the L-shaped horizontal side of the connecting plate 1 (508) is fixed with a movable end of a displacement sensor (509) and an adjusting screw rod (511), the fixed end of the displacement sensor (509) is fixed on the base (1), the adjusting screw rod (511) is arranged along the vertical direction, and the adjusting screw rod (511) is adjustable along the fixed position of the connecting plate 1 (508) in the up-down direction, a contact switch 2 (510) is arranged directly above the adjusting screw rod (511), and the contact switch 2 (510) is fixed on the base (1), and the displacement sensor (509) and the contact switch 2 (510) are respectively connected to the control system (8) through lines; The displacement sensor (509) detects the displacement of the support plate (503), and the control system calculates the traction force of the bandage according to the stiffness of the compression spring (504) and the compression deformation of the compression spring (504). If the traction force is too large, the upper end of the adjusting screw rod (511) squeezes the contact switch 2 (510), and the reduction motor (2) stops rotating or reverses, thereby protecting the safety of the patient. By adjusting the fixed position of the adjusting screw rod (511) in the up-down direction, the limit value of the traction force of the patient can be adjusted.

2. The flexible traction device according to claim 1, characterized in that: The structure of the guide wheel 2 (604) rotatably mounted on the upper end of the support plate (503) is as follows: the guide device (6) includes a support (601), a connecting plate 2 (602), a protective wheel (603), and a guide wheel 2 (604); the lower end of the support (601) is fixed to the connecting plate 2 (602); the connecting plate 2 (602) is fixed to the upper fixed plate (507); the guide wheel 2 (604) is rotatably mounted on the support (601); the protective wheel (603) is rotatably mounted on the support (601) at the upper front side of the guide wheel 2 (604) to prevent the pulling rope (403) from falling off; the upper fixed plate (507) is provided with a hole that runs through from top to bottom, so that the pulling rope (403) can pass through without contacting the pulling rope (403).

3. The flexible traction device according to claim 1, characterized in that: The base (1) comprises a bottom plate (101), a vertical plate 1 (102), a contact switch 1 (103), and a vertical plate 2 (104); the reduction motor (2) is fixedly mounted on the vertical plate 1 (102); the output shaft of the reduction motor (2) passes through the vertical plate 1 (102) and the connecting plate (301) to fix the driving gear (302); the left end surface of the vertical plate 1 (102) is equipped with a contact switch 1 (103); the vertical plate 1 (102) and the vertical plate 2 (104) are fixed on the bottom plate (101); the reduction motor (2) and the contact switch 1 (103) are connected to the control system through circuits respectively. The control system (8) is connected so that when the connecting plate (301) rotates clockwise and squeezes the contact switch 1 (103), the control system (8) controls the reduction motor (2) to stop rotating. The front and rear ends of the support shaft (404) are rotatably mounted on the vertical plate 1 (102) and the vertical plate 2 (104), respectively. The spring box (406) is fixed on the vertical plate 2 (104). The control system (8) is fixedly mounted on the bottom plate (101). The lower end of the guide rod (501) is fixed on the bottom plate (101). The fixed end of the displacement sensor (509) and the contact switch 2 (510) are fixed on the vertical plate 1 (102).

4. The flexible traction device according to claim 3, characterized in that: There are two guide rods (501), and the upper ends of the guide rods (501), the upper ends of the first vertical plate (102), and the upper ends of the second vertical plate (104) are fixed to an upper fixed plate (507). The lower end of a compression spring (504) is fixed to the center of the upper end of the support plate (503). The compression spring (504) is located between the support plate (503) and the upper fixed plate (507). The upper end of the compression spring (504) contacts the upper fixed plate (507). A support spring (502) is sleeved on each guide rod (501), and the support spring (502) is located between the bottom plate (101) and the support plate (503).

5. The flexible traction device according to claim 4, characterized in that: Two bracket plates (505) are fixed on the lower end surface of the support plate (503) between the two guide rods (501). The two bracket plates (505) are arranged in parallel. The two bracket plates (505) respectively fix the front end and the rear end of the guide shaft (512). The guide wheel (506) is slidably mounted on the guide shaft (512).

6. The flexible traction device according to any one of claims 3 to 5, characterized in that: After the support shaft (404) extends backward out of the second vertical plate (104), the rear end of the support shaft (404) fixes the inner end of the spring (405), and the outer end of the spring (405) is fixed on the spring box (406).

7. The flexible traction device according to any one of claims 3 to 5, characterized in that: It also includes a power supply (7), which is fixedly mounted on the base plate (101), and the power supply (7) supplies power to the reduction motor (2) and the control system (8).

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