Bearing pulley

Abstract

The utility model discloses a bearing pulley which comprises a connecting frame, the upper end of the connecting frame is rotationally connected with a positioning disc, the connecting frame is in an inverted concave design, the surface of the lower end of one side of the connecting frame is fixedly connected with a limiting cylinder, and a pulley body is rotationally connected between the outer surface of the limiting cylinder and the connecting frame. A groove is formed in the side surface of the upper end of the connecting frame, an adjusting lead screw is rotationally connected to the inner wall of the groove of the connecting frame, and an extrusion sliding block is arranged on the outer surface of the adjusting lead screw. The bearing pulley is provided with a linkage sliding block and a positioning clamping block, so that when the device works, the connecting frame and the positioning disc are clamped through the positioning clamping block, the stability is improved during working, when the angle needs to be changed, an adjusting lead screw is rotated to drive an extrusion sliding block to push the linkage sliding block to descend, and the positioning clamping block unlocks the connecting frame and the positioning disc; and the connecting frame can be rotated conveniently, and the adjusting convenience of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely is a kind of load-bearing pulley. BACKGROUND

[0002] Load-bearing pulley is an important mechanical component widely used in many fields, in the medical field, load-bearing pulley has a variety of important applications, in rehabilitation therapy, for patients who need to recover motor function after limb injury or operation, through the combination of rope and pulley, certain resistance and traction can be provided, to help patients carry out targeted muscle strength training and joint range of motion training, some adjustable medical beds or examination chairs are equipped with pulleys with ropes, so that medical staff can easily adjust the height, angle and position of bed or chair, to provide more comfortable treatment experience for patients, or traction therapy in physical therapy, through the pulley with rope, the spine or limbs of patients are slowly and continuously pulled, which helps to relieve pain and improve scoliosis.

[0003] Medical devices often need to change the direction of the pulley and work in multiple directions, the existing pulleys are mostly hung with ropes, and when the pulley turns, the steel wire is easy to slide out of the groove of the pulley due to the lack of limiting structure, which leads to the loosening of the steel wire and affects the stability of the hanging. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a load-bearing pulley to solve the problem that some pulleys are mostly hung with ropes, and when the pulley turns, the steel wire is easy to slide out of the groove of the pulley due to the lack of limiting structure, which leads to the loosening of the steel wire and affects the stability of the hanging.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a load-bearing pulley, comprising a connecting frame, a positioning disc is rotatably connected to the upper end of the connecting frame, the connecting frame is designed in an inverted concave shape, a limiting cylinder is fixedly connected to the surface of the lower end of one side of the connecting frame, a pulley body is rotatably connected between the outer surface of the limiting cylinder and the connecting frame, a groove is arranged on the upper end surface of the connecting frame, and an adjusting lead screw is rotatably connected to the inner wall of the groove of the connecting frame, an extrusion sliding block is arranged on the outer surface of the adjusting lead screw, an opening is arranged on the lower surface of the connecting frame, and a linkage sliding block is slidably connected to the inner wall of the opening of the connecting frame, two positioning clamping blocks are fixed to the upper end of the linkage sliding block, a damping pressing block is fixed to the lower end of the linkage sliding block, an auxiliary anti-skid mechanism is arranged between the limiting cylinder and the pulley body, air is pushed to the second piston column by the first piston column, and the first magnet repels the second magnet to facilitate the third piston column to push air into the anti-skid air bag.

[0006] Preferably, the lower surface of the positioning disc is provided with positioning grooves, and the positioning grooves of the positioning disc are arranged in an annular array about the center of the positioning disc, and the positioning grooves of the positioning disc are arranged correspondingly with the positioning blocks.

[0007] By the above technical scheme, the positioning disc is used to facilitate the rotation of the connecting frame, and the positioning blocks are used to facilitate the clamping and fixing of the positioning grooves of the positioning disc.

[0008] Preferably, the adjusting screw is in threaded connection with the extrusion slide, the extrusion slide is in sliding connection with the connecting frame, the lower surface of the extrusion slide is arc-shaped, the upper surface of the linkage slide is inclined, and the positioning block penetrates through the upper surface of the connecting frame.

[0009] By the above technical scheme, the rotation of the adjusting screw drives the horizontal sliding of the extrusion slide, so that the extrusion slide pushes the linkage slide to slide downward.

[0010] Preferably, the damping block is in sliding connection with the connecting frame, a spring is connected between the damping block and the connecting frame, the lower surface of the damping block is provided with an arc-shaped groove, and the inner wall of the groove of the damping block is provided with a rubber pad.

[0011] By the above technical scheme, the linkage slide drives the damping block to descend to press the rope.

[0012] Preferably, the auxiliary anti-skid mechanism comprises a first piston column, the first piston column is in threaded connection with the outer surface of one end of the adjusting screw, the surface of the limiting cylinder is provided with an opening, the inner wall of the opening of the limiting cylinder is in sliding connection with a second piston column, one end of the second piston column is fixedly connected with a first magnet, the inner part of the pulley body is provided with an air groove, the inner wall of the air groove of the pulley body is in sliding connection with two third piston columns, one end of the third piston column is fixedly connected with a second magnet, and the inner surface of the pulley body is fixedly connected with an anti-skid air bag.

[0013] By the above technical scheme, the sliding of the first piston column pushes air into the limiting cylinder.

[0014] Preferably, the first piston column is in sliding connection with the connecting frame, and the first piston column is in communication with the opening of the limiting cylinder, and a spring is connected between the second piston column and the limiting cylinder.

[0015] By the above technical scheme, the second piston column is pushed by air to drive the first magnet, so that the first magnet repels the second magnet.

[0016] Preferably, the first magnet is of a ring type design, the outer surface magnetic poles of the first magnet are of the same direction as the magnetic poles of the two second magnets at the same end, a spring is connected between the third piston column and the inner wall of the air groove of the pulley body, the third piston column is in communication with the anti-skid air bag, and the anti-skid air bag is of a hollow ring design.

[0017] By the above technical scheme, the third piston column is driven to move by the second magnet, so that the anti-skid air bag is inflated.

[0018] Compared with the prior art, the bearing pulley has the advantages that:

[0019] 1. The linkage sliding block and the positioning clamping block are arranged, so that when the device works, the positioning clamping block is clamped and connected with the connecting frame and the positioning disc, thereby improving stability during work; when the angle needs to be changed, the linkage sliding block is lowered by rotating the adjusting screw to drive the extrusion sliding block, so that the positioning clamping block unlocks the connecting frame and the positioning disc, the connecting frame is conveniently rotated, and the convenience of adjusting the device is improved.

[0020] 2. The damping block and the adjusting screw are arranged, so that when the device works, the damping block is conveniently pressed against the rope by rotating the adjusting screw to drive the extrusion sliding block to slide down the linkage sliding block and the damping block, thereby improving the stability of the rope, preventing the rope from sliding and deviating when the connecting frame is rotated, and improving the stability of the rope during adjustment.

[0021] 3. The third piston column and the anti-skid air bag are arranged, so that when the device works, the first piston column is driven to slide by rotating the adjusting screw, air is pushed into the limiting cylinder by the first piston column, the second piston column in the limiting cylinder is driven to slide by the first magnet, the annular first magnet repels the second magnet, air is pushed into the anti-skid air bag by the third piston column driven by the second magnet, and the anti-skid air bag is conveniently inflated to further rub and prevent the rope from slipping on the side. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a three-dimensional structure diagram of the connecting frame and the positioning disc of the utility model;

[0023] Figure 2 It is a three-dimensional structure diagram of the connecting frame and the adjusting screw of the utility model;

[0024] Figure 3 It is a three-dimensional structure diagram of the linkage sliding block and the positioning clamping block of the utility model;

[0025] Figure 4 It is a three-dimensional structure diagram of the limiting cylinder and the pulley body of the utility model;

[0026] Figure 5The utility model discloses a second piston post and first magnet connection three -dimensional structure schematic diagram,

[0027] Figure 6 The utility model discloses Figure 5 The utility model discloses an enlarged structure schematic diagram of A place in the middle.

[0028] In the drawing: 1, connecting frame;2, positioning disc;3, limiting cylinder;4, pulley body;5, adjusting lead screw;6, extrusion sliding block;7, linkage sliding block;8, positioning clamping block;9, damping pressing block;10, first piston post;11, second piston post;12, first magnet;13, second magnet;14, third piston post;15, antiskid air bag. Specific implementation

[0029] The technical solutions in the embodiments of the utility model will be apparently and completely described in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0030] Please refer to Figures 1-6 The utility model provides a kind of technical solutions: a load-bearing pulley, including connecting frame 1, positioning disc 2, limiting cylinder 3, pulley body 4, adjusting lead screw 5, extrusion sliding block 6, linkage sliding block 7, positioning clamping block 8, damping pressing block 9, first piston post 10, second piston post 11, first magnet 12, second magnet 13, third piston post 14 and antiskid air bag 15, connecting frame 1, its upper end is rotatably connected with positioning disc 2, connecting frame 1 is inverted concave design, the lower surface of positioning disc 2 is provided with positioning groove, and the positioning groove of positioning disc 2 is about positioning disc 2 center of circle annular array setting, the positioning groove of positioning disc 2 is correspondingly set with positioning clamping block 8, when using the device, by connecting frame 1 surface spring push damping pressing block 9, linkage sliding block 7 and positioning clamping block 8 rise, so that positioning clamping block 8 is fixed to positioning disc 2 and is clamped, facilitate the stability of connecting frame 1 and positioning disc 2.

[0031] The surface of the lower end of one side of the connecting frame 1 is fixedly connected with a limiting cylinder 3, the outer surface of the limiting cylinder 3 is rotatably connected with a pulley body 4 between the connecting frame 1, the upper end side surface of the connecting frame 1 is provided with a groove, and the inner wall of the groove of the connecting frame 1 is rotatably connected with an adjusting lead screw 5, the adjusting lead screw 5 is in threaded connection with an extrusion sliding block 6, the extrusion sliding block 6 is in sliding connection with the connecting frame 1, the lower surface of the extrusion sliding block 6 is designed in an arc shape, the upper surface of a linkage sliding block 7 is designed in an inclination, a positioning clamping block 8 penetrates through the upper surface of the connecting frame 1, a damping pressing block 9 is in sliding connection with the connecting frame 1, and a spring is connected between the damping pressing block 9 and the connecting frame 1, the lower surface of the damping pressing block 9 is provided with an arc-shaped groove, and a rubber pad is arranged on the inner wall of the groove of the damping pressing block 9, when it is needed to adjust the orientation of the connecting frame 1, first rotate the adjusting lead screw 5, so that the adjusting lead screw 5 drives the extrusion sliding block 6 to slide horizontally, the inclination of the linkage sliding block 7 is pushed by the arc-shaped design of the extrusion sliding block 6, so as to facilitate the linkage sliding block 7 to drive the damping pressing block 9 to slide downward to press and fix the rope, thereby improving the stability of the rope when the connecting frame 1 rotates, and preventing the rope from being offset and loosened relative to the pulley body 4.

[0032] The outer surface of the adjusting lead screw 5 is provided with the extrusion sliding block 6, the lower surface of the connecting frame 1 is provided with an opening, and the inner wall of the opening of the connecting frame 1 is in sliding connection with the linkage sliding block 7, the auxiliary anti-skid mechanism comprises a first piston column 10, which is in threaded connection with the outer surface of one end of the adjusting lead screw 5, the surface of the limiting cylinder 3 is provided with an opening, and the inner wall of the opening of the limiting cylinder 3 is in sliding connection with a second piston column 11, one end of the second piston column 11 is fixedly connected with a first magnet 12, the inside of the pulley body 4 is provided with an air groove, and the inner wall of the air groove of the pulley body 4 is in sliding connection with two third piston columns 14, one end of the third piston column 14 is fixedly connected with a second magnet 13, and the inner side surface of the pulley body 4 is fixedly connected with an anti-skid air bag 15, while the adjusting lead screw 5 rotates, the first piston column 10 is driven by the adjusting lead screw 5 to slide, and then air is pushed into the inside of the limiting cylinder 3, so that the air drives the second piston column 11 to move, and the first magnet 12 is extended out of one end of the limiting cylinder 3 by the second piston column 11.

[0033] The upper end of the linkage sliding block 7 is fixed with two positioning clamping blocks 8, the lower end of the linkage sliding block 7 is fixed with a damping pressing block 9, an auxiliary anti-skid mechanism is arranged between the limiting cylinder 3 and the pulley body 4, air is pushed to the second piston column 11 through the first piston column 10 and the first magnet 12 repels the second magnet 13 to facilitate the third piston column 14 to push air into the anti-skid air bag 15, the first piston column 10 and the connecting frame 1 are in sliding connection, and the first piston column 10 is in communication with the opening of the limiting cylinder 3, a spring is connected between the second piston column 11 and the limiting cylinder 3, the first magnet 12 is designed in a ring shape, the outer surface magnetic pole of the first magnet 12 is in the same direction as the magnetic pole of the opposite end of the two second magnets 13, a spring is connected between the third piston column 14 and the inner wall of the air groove of the pulley body 4, the third piston column 14 is in communication with the anti-skid air bag 15, the anti-skid air bag 15 is designed in a hollow ring shape, the second magnet 13 is repelled by the first magnet 12, so that the third piston column 14 is driven by the second magnet 13 to slide, the anti-skid air bag 15 is inflated by the third piston column 14, and the rope side is attached after the anti-skid air bag 15 is inflated, further improving the anti-skid performance of the rope when turning.

[0034] Working principle: when the load pulley is used, first, the positioning clamping block 8 is clamped and fixed with the connecting frame 1 and the positioning disc 2, the linkage sliding block 7 is driven by the extrusion sliding block 6 to press down the linkage sliding block 7, the linkage sliding block 7 drives the positioning clamping block 8 to unlock the positioning disc 2, so that the connecting frame 1 can be rotated, the linkage sliding block 7 drives the damping pressing block 9 to press and fix the upper end of the rope through the downward sliding of the linkage sliding block 7, and the first piston column 10 is driven to slide by the rotation of the adjusting screw 5, so that the first piston column 10 pushes air to the second piston column 11, the second piston column 11 drives the first magnet 12 to slide and repels the second magnet 13, the third piston column 14 is driven to slide by the second magnet 13 to inflate the anti-skid air bag 15, the rope side is attached by the inflation of the anti-skid air bag 15, and the practicability of the whole is improved.

[0035] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A load bearing pulley comprising a connecting frame (1), the upper end of which is pivotally connected to a positioning disc (2), characterized in that: The connecting frame (1) is designed as an inverted concave shape, the surface of the lower end of one side of the connecting frame (1) is fixedly connected with a limiting cylinder (3), the outer surface of the limiting cylinder (3) is rotatably connected with a pulley body (4) between the limiting cylinder (3) and the connecting frame (1), the upper end side surface of the connecting frame (1) is provided with a groove, and the inner wall of the groove of the connecting frame (1) is rotatably connected with an adjusting lead screw (5), the outer surface of the adjusting lead screw (5) is provided with an extrusion sliding block (6), the lower surface of the connecting frame (1) is provided with an opening, and the inner wall of the opening of the connecting frame (1) is slidably connected with a linkage sliding block (7), the upper end of the linkage sliding block (7) is fixedly connected with two positioning clamping blocks (8), the lower end of the linkage sliding block (7) is fixedly connected with a damping pressing block (9), the limiting cylinder (3) and the pulley body (4) are provided with an auxiliary anti-skid mechanism, air is pushed to the second piston column (11) through the first piston column (10) and drives the first magnet (12) to repel the second magnet (13), so that the third piston column (14) pushes the air into the anti-skid air bag (15).

2. A load bearing pulley as claimed in claim 1 wherein: The lower surface of the positioning disc (2) is provided with a positioning groove, and the positioning grooves of the positioning disc (2) are arranged in an annular array about the center of the positioning disc (2), and the positioning grooves of the positioning disc (2) are correspondingly arranged with the positioning clamping blocks (8).

3. A load bearing pulley as claimed in claim 1 wherein: The adjusting lead screw (5) and the extrusion sliding block (6) are in threaded connection, the extrusion sliding block (6) and the connecting frame (1) are in sliding connection, and the lower surface of the extrusion sliding block (6) is designed as an arc shape, the upper surface of the linkage sliding block (7) is designed as an inclined shape, and the positioning clamping blocks (8) penetrate through the upper surface of the connecting frame (1).

4. The load bearing pulley of claim 1, wherein: The damping pressing block (9) and the connecting frame (1) are in sliding connection, and a spring is connected between the damping pressing block (9) and the connecting frame (1), the lower surface of the damping pressing block (9) is provided with an arc-shaped groove, and the inner wall of the groove of the damping pressing block (9) is provided with a rubber pad.

5. The load bearing pulley of claim 1, wherein: The auxiliary anti-skid mechanism comprises a first piston column (10) which is in threaded connection with the outer surface of one end of the adjusting lead screw (5), the surface of the limiting cylinder (3) is provided with an opening, and the inner wall of the opening of the limiting cylinder (3) is slidably connected with a second piston column (11), one end of the second piston column (11) is fixedly connected with a first magnet (12), the inside of the pulley body (4) is provided with a gas groove, and the inner wall of the gas groove of the pulley body (4) is slidably connected with two third piston columns (14), one end of the third piston column (14) is fixedly connected with a second magnet (13), and the inner side surface of the pulley body (4) is fixedly connected with an anti-skid air bag (15).

6. A load bearing pulley as claimed in claim 5 wherein: The first piston column (10) and the connecting frame (1) are in sliding connection, and the opening of the limiting cylinder (3) is connected with the first piston column (10), and a spring is connected between the second piston column (11) and the limiting cylinder (3).

7. A load bearing pulley as claimed in claim 5 wherein: The first magnet (12) is of ring type design, the outer surface magnetic pole of the first magnet (12) is of same direction as the magnetic pole of the opposite end of the two second magnets (13), a spring is connected between the third piston column (14) and the inner wall of the air groove of the pulley body (4), the third piston column (14) is connected with the anti-skid air bag (15), and the anti-skid air bag (15) is of hollow ring design.

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