Pulley block structure convenient to disassemble

Abstract

The utility model discloses a conveniently dismantled pulley block structure, which comprises a support frame 1, one side of the support frame 1 is provided with a mounting frame, the inner wall of the mounting frame is slidably connected with a fixed pin, the middle part of the outer side wall of the fixed pin is rotatably connected with a fixed pulley, and the inner wall of the fixed pin is in threaded connection with a threaded rod 2. One end of the second threaded rod is rotationally connected with a sliding rod, and one side of the outer side wall of the sliding rod is rotationally connected with a plurality of rotating rods. By rotating the second threaded rod, the second threaded rod moves along the threads of the fixing pin, the second threaded rod pulls the sliding rod, the rotating rod rotates, one side of the connecting plate slides along the guide groove, the multiple limiting plates get close to one another, and one side of each limiting plate relieves limitation of the fixing pin on the mounting frame; and the fixed pulley can be detached from the mounting frame, the structure is simple, the operation is convenient, and the replacement efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulley blocks, in particular to a pulley block structure which is convenient to disassemble. Background Art

[0002] A pulley block is a simple mechanical device assembled from multiple movable pulleys and fixed pulleys. Its characteristics are that it can save effort and change the direction of force. A pulley block is a simple machine consisting of a grooved disc that can rotate around a central axis and a flexible cable that crosses the disc. It is widely used in industrial machinery, fitness equipment and other fields.

[0003] In the prior art, for example, Chinese patent CN215208205U discloses a precision casting of a pulley block, comprising an L-shaped frame, a slide groove is provided at the upper end of the L-shaped frame, a threaded rod is inserted and connected to the front part of the groove wall of the slide groove, the threaded rod passes through the front part of the right groove wall of the slide groove and is fixedly installed with a forward and reverse motor, a slide plate is threadedly connected to the middle part of the outer surface of the threaded rod, a limit rod is inserted and connected to the rear part of the right end of the slide plate, a storage device is provided at the upper end of the slide plate, a fixed pulley device is provided at the lower end of the slide plate, and a movable pulley device is provided at the lower end of the fixed pulley device.

[0004] Although the above patent uses a storage cylinder, a valve, and a through pipe to make the lubricating oil flow to the surface of the fixed pulley, thereby reducing the wear of the pulley block and increasing its service life, the pulley block needs to be disassembled and replaced after long-term use. The existing method fixes the pulley on the pulley block by a rotating shaft and a fixing nut, which is inefficient during disassembly and the nut may be lost after disassembly, making it inconvenient to use. Utility Model Content

[0005] The purpose of the utility model is to provide a pulley block structure that is easy to disassemble, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pulley group structure that is easy to disassemble, including a support frame one, a mounting frame is provided on one side of the support frame one, the inner wall of the mounting frame is slidably connected with a fixing pin, the middle part of the outer wall of the fixing pin is rotatably connected with a fixed pulley, the inner wall of the fixing pin is threadedly connected with a threaded rod two, one end of the threaded rod two is rotatably connected with a sliding rod, one side of the outer wall of the sliding rod is rotatably connected with multiple rotating rods, one end of the multiple rotating rods are rotatably connected with a connecting plate, one side of the multiple connecting plates are fixedly connected with a limiting plate, and one side of the multiple limiting plates is fitted with one side of the mounting frame.

[0007] As a further preferred embodiment of the present technical solution, a clamping block is fixedly connected to the other side of the outer wall of the fixing pin, a limiting frame is fixedly connected to one side of the mounting frame, and one side of the clamping block is clamped to one side of the limiting frame.

[0008] As a further preferred embodiment of the present technical solution, a plurality of guide grooves are provided at one end of the fixing pin, and inner walls of the plurality of guide grooves are respectively slidably connected to one end of the plurality of connecting plates.

[0009] As a further preferred embodiment of the present technical solution, one end of the support frame one is fixedly connected to the support frame two, one side of the support frame two is fixedly connected to a support rod, and one end of the support rod is fixedly connected to one side of the support frame one.

[0010] As a further preferred embodiment of the present technical solution, a driving device 2 is fixedly installed on one side of the supporting frame 2, the output end of the driving device 2 is transmission-connected with a threaded rod 1, the outer side wall of the threaded rod 1 is threadedly connected with a slider, and one end of the slider is fixedly connected to the upper end of the mounting frame.

[0011] As a further preferred embodiment of the present technical solution, a storage tank is fixedly mounted on the middle portion of the upper end of the slider, an output end of the storage tank is fixedly connected to one side of the mounting frame, and a valve is fixedly mounted on one side of the inner wall of the storage tank.

[0012] As a further preferred embodiment of the present technical solution, a winding device is fixedly installed on one side of the support frame, a pull rope is wound around the outer wall of the winding device, a driving device is fixedly installed on one side of the winding device, one end of the pull rope is fixedly connected to the lower end of the mounting frame, and a movable pulley is arranged below the fixed pulley.

[0013] The utility model provides a pulley block structure that is easy to disassemble, and has the following beneficial effects:

[0014] (1) The utility model rotates the threaded rod 2, and the threaded rod 2 moves along the thread of the fixed pin, so that the threaded rod 2 pulls the sliding rod, the rotating rod rotates, and one side of the connecting plate slides along the guide groove, so that the multiple limit plates are close to each other, and one side of the limit plate releases the restriction of the fixed pin on the installation frame, and then the fixed pin is pulled out from the installation frame and the fixed pulley, so that the fixed pulley is removed from the installation frame. This structure is simple, easy to operate, and improves replacement efficiency.

[0015] (2) The utility model starts the second driving device, and the threaded rod one rotates in the second supporting frame, so that the slider moves back and forth in the second supporting frame, thereby adjusting the position of the pulley block, realizing the movement of the hoisted object and improving the practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 for Figure 1 A partial enlarged schematic diagram of the middle A area;

[0018] Figure 3 This is a schematic diagram of the connection relationship between the fixed pulley and the movable pulley in the utility model;

[0019] Figure 4 for Figure 3 A partial enlarged schematic diagram of the middle B area;

[0020] Figure 5 It is a schematic diagram of the cross-sectional structure of the fixing pin in the utility model;

[0021] In the figure: 1. Support frame 1; 2. Support frame 2; 3. Threaded rod 1; 4. Sliding block; 5. Storage tank; 6. Fixed pulley; 7. Movable pulley; 8. Mounting frame; 9. Limiting frame; 10. Fixing pin; 11. Support rod; 12. Driving device 1; 13. Pull rope; 14. Winding device; 15. Driving device 2; 16. Valve; 17. Guide groove; 18. Limiting plate; 19. Sliding rod; 20. Rotating rod; 21. Connecting plate; 22. Block; 23. Threaded rod 2. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] The utility model provides a technical solution: Figure 1 - Figure 5 As shown, in this embodiment, a pulley block structure that is easy to disassemble includes a support frame 1, a mounting frame 8 is provided on one side of the support frame 1, a fixing pin 10 is slidably connected to the inner wall of the mounting frame 8, a fixed pulley 6 is rotatably connected to the middle part of the outer wall of the fixing pin 10, a threaded rod 23 is threadedly connected to the inner wall of the fixing pin 10, one end of the threaded rod 23 is rotatably connected to a sliding rod 19, a plurality of rotating rods 20 are rotatably connected to one side of the outer wall of the sliding rod 19, one end of each of the plurality of rotating rods 20 is rotatably connected to a connecting plate 21, and one side of each of the plurality of connecting plates 21 is fixedly connected to a limiting plate 18. , one side of multiple limit plates 18 is in contact with one side of the mounting frame 8, and by rotating the threaded rod 23, the threaded rod 23 moves along the thread of the fixed pin 10, so that the threaded rod 23 pulls the sliding rod 19, the rotating rod 20 rotates, and one side of the connecting plate 21 slides along the guide groove 17, so that the multiple limit plates 18 are close to each other, and one side of the limit plate 18 releases the restriction of the fixed pin 10 on the mounting frame 8, and then the fixed pin 10 is pulled out from the mounting frame 8 and the fixed pulley 6, so that the fixed pulley 6 is removed from the mounting frame 8. This structure is simple, easy to operate, and improves replacement efficiency.

[0024] like Figure 1 and Figure 5As shown, a clamping block 22 is fixedly connected to the other side of the outer wall of the fixing pin 10, and a limiting frame 9 is fixedly connected to one side of the mounting frame 8. One side of the clamping block 22 is clamped with one side of the limiting frame 9. Through the structural design of the clamping block 22 and the limiting frame 9, the rotation of the fixing pin 10 can be limited when the threaded rod 23 is rotated.

[0025] like Figure 5 As shown, a plurality of guide grooves 17 are formed at one end of the fixing pin 10 , and inner walls of the plurality of guide grooves 17 are slidably connected to one end of a plurality of connecting plates 21 , respectively. The sliding direction of the connecting plates 21 can be limited by the guide grooves 17 .

[0026] like Figure 1 As shown, one end of support frame 1 is fixedly connected to support frame 2 2, one side of support frame 2 2 is fixedly connected to support rod 11, one end of support rod 11 is fixedly connected to one side of support frame 1, and support rod 11 is installed on support frame 1 and support frame 2 2 in a triangular shape to improve the stability of support frame 1 and support frame 2 2.

[0027] like Figure 1 and Figure 2 As shown, a driving device 2 15 is fixedly installed on one side of the support frame 2, and the output end of the driving device 2 15 is transmission-connected with a threaded rod 3, and the outer wall of the threaded rod 3 is threadedly connected with a slider 4, and one end of the slider 4 is fixedly connected to the upper end of the mounting frame 8. When the driving device 2 15 is turned on, the threaded rod 3 rotates in the support frame 2, so that the slider 4 moves back and forth in the support frame 2, thereby adjusting the position of the pulley block, realizing the movement of the hoisted object, and improving the practicability of the equipment.

[0028] like Figure 1 and Figure 3 As shown, a storage tank 5 is fixedly installed in the middle of the upper end of the slider 4, the output end of the storage tank 5 is fixedly connected to one side of the mounting frame 8, and a valve 16 is fixedly installed on one side of the inner wall of the storage tank 5. By rotating the valve 16, the lubricating oil in the storage tank 5 flows into the fixed pulley 6, thereby improving the service life of the fixed pulley 6, wherein the storage tank 5 is also installed on the movable pulley 7.

[0029] like Figure 1 and Figure 3 As shown, a winding device 14 is fixedly installed on one side of the support frame 1, and a pull rope 13 is wound around the outer wall of the winding device 14. A driving device 12 is fixedly installed on one side of the winding device 14. One end of the pull rope 13 is fixedly connected to the lower end of the mounting frame 8. A movable pulley 7 is arranged below the fixed pulley 6. Through the cooperation of the fixed pulley 6 and the movable pulley 7, the force of pulling the heavy object can be reduced, so that the heavy object can be lifted conveniently. The structures on the fixed pulley 6 and the movable pulley 7 are the same.

[0030] The utility model provides a pulley block structure that is easy to disassemble, and the specific working principle is as follows:

[0031] When using the pulley block, first hang the weight on the hook on the movable pulley 7, then turn on the driving device 12, the fixed pulley 6 cooperates with the movable pulley 7, the weight is lifted, and then the driving device 2 15 is turned on, the threaded rod 1 3 rotates in the support frame 2 2, so that the slider 4 moves back and forth in the support frame 2 2, and the weight moves to the required position. When the fixed pulley 6 and the movable pulley 7 are seriously damaged and need to be replaced after long-term use, the threaded rod 2 23 is rotated, and the threaded rod 2 23 moves along the fixing pin 1 0 moves, so that the threaded rod 23 pulls the sliding rod 19, the rotating rod 20 rotates, and one side of the connecting plate 21 slides along the guide groove 17, so that the multiple limiting plates 18 are close to each other, and one side of the limiting plate 18 releases the restriction of the fixing pin 10 on the mounting frame 8, and then the fixing pin 10 is pulled out from the mounting frame 8 and the fixed pulley 6, and the fixed pulley 6 is removed from the mounting frame 8. The same operation is performed for the removal of the movable pulley 7, so that the fixed pulley 6 and the movable pulley 7 can be quickly replaced.

[0032] 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 pulley block structure that is easy to disassemble, comprising a support frame (1), characterized in that: A mounting frame (8) is provided on one side of the support frame 1 (1), a fixing pin (10) is slidably connected to the inner wall of the mounting frame (8), a fixed pulley (6) is rotatably connected to the middle part of the outer wall of the fixing pin (10), a threaded rod 2 (23) is threadedly connected to the inner wall of the fixing pin (10), one end of the threaded rod 2 (23) is rotatably connected to a sliding rod (19), a plurality of rotating rods (20) are rotatably connected to one side of the outer wall of the sliding rod (19), one end of the plurality of rotating rods (20) are rotatably connected to a connecting plate (21), one side of the plurality of connecting plates (21) are fixedly connected to a limiting plate (18), and one side of the plurality of limiting plates (18) are in contact with one side of the mounting frame (8).

2. The pulley block structure that is easy to disassemble according to claim 1, characterized in that: A clamping block (22) is fixedly connected to the other side of the outer wall of the fixing pin (10), one side of the mounting frame (8) is fixedly connected to a limiting frame (9), and one side of the clamping block (22) is clamped to one side of the limiting frame (9).

3. The pulley block structure that is easy to disassemble according to claim 1 is characterized in that: One end of the fixing pin (10) is provided with a plurality of guide grooves (17), and the inner walls of the plurality of guide grooves (17) are respectively slidably connected to one end of the plurality of connecting plates (21).

4. The pulley block structure that is easy to disassemble according to claim 1 is characterized in that: One end of the support frame 1 (1) is fixedly connected to the support frame 2 (2), one side of the support frame 2 (2) is fixedly connected to a support rod (11), and one end of the support rod (11) is fixedly connected to one side of the support frame 1 (1).

5. The pulley block structure that is easy to disassemble according to claim 4, characterized in that: A driving device 2 (15) is fixedly mounted on one side of the supporting frame 2 (2); the output end of the driving device 2 (15) is drivingly connected to a threaded rod 1 (3); the outer wall of the threaded rod 1 (3) is threadedly connected to a slider (4); one end of the slider (4) is fixedly connected to the upper end of the mounting frame (8).

6. The pulley block structure that is easy to disassemble according to claim 5, characterized in that: A storage tank (5) is fixedly mounted in the middle of the upper end of the slider (4); the output end of the storage tank (5) is fixedly connected to one side of the mounting frame (8); and a valve (16) is fixedly mounted on one side of the inner wall of the storage tank (5).

7. The pulley block structure that is easy to disassemble according to claim 1, characterized in that: A winding device (14) is fixedly installed on one side of the support frame (1), a pull rope (13) is wound around the outer wall of the winding device (14), a driving device (12) is fixedly installed on one side of the winding device (14), one end of the pull rope (13) is fixedly connected to the lower end of the mounting frame (8), and a movable pulley (7) is arranged below the fixed pulley (6).

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