Convenient chain block

Abstract

The utility model relates to the technical field of chain blocks, and discloses a convenient chain block which comprises a chain block body, a hand chain wheel rotationally connected with one side of the chain block body through a rotating shaft and a hand chain connected with the outer side of the hand chain wheel, and a hook is fixedly installed in the middle of the top end of the chain block body. A lifting assembly is arranged in the chain block body, a fixing plate fixedly mounted on the outer wall face of the chain block body is arranged on the outer side of the lifting assembly, a protective cover plate is fixedly mounted at the front end of the fixing plate, and a fan-shaped mounting block rotationally connected with the bottom end of the rear wall face of the protective cover plate is arranged on the bottom side of the hand chain wheel. An arc-shaped movable groove is formed in the top of the left wall face of the fan-shaped mounting block, and a brake mechanism is arranged in the arc-shaped movable groove. By arranging the braking mechanism and the adjusting mechanism, the equipment can conveniently recover and release the braking effect of the hand chain wheel, and the use convenience of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chain hoists, in particular to a convenient chain hoist. Background Technique

[0002] After retrieval, the application number 202220222723.6 discloses a chain hoist with convenient maintenance, including a chain hoist body. One side of the chain hoist body is rotatably installed with a hand chain wheel through a rotating shaft. A hand chain is connected to the outside of the hand chain wheel. By fixedly installing a fixing block at the bottom of one side of the cover plate, a threaded rod is rotatably installed inside the fixing block. When lifting goods, by rotating the knob to drive the threaded rod to rotate, the slider is driven to move inside the fixing block.

[0003] During the use of the convenient chain hoist in the patent application, by rotating the knob to drive the threaded rod to rotate, the slider is forced to move inside the fixing block, so that the slider drives the baffle on the installation box to be clamped outside the hand chain wheel, and cooperates with the braking system to brake the goods, reducing the load of the braking system and improving the safety of the device. However, during such use, when the tooth groove position of the hand chain wheel is aligned with the baffle position, the baffle can be smoothly clamped outside the hand chain wheel through the installation box. However, during the normal use of the hand chain wheel, its position is constantly changing, and the hand chain wheel is located inside the device, making it difficult for the staff to align the tooth groove of the hand chain wheel with the baffle position, which brings inconvenience to the use of the device. Therefore, we propose a convenient chain hoist. Content of the Utility Model

[0004] The utility model mainly solves the technical problems existing in the above-mentioned prior art, and provides a convenient chain hoist.

[0005] To achieve the above object, the utility model adopts the following technical scheme. A convenient chain hoist includes a chain hoist body, a hand chain wheel rotatably connected to one side of the chain hoist body through a rotating shaft, and a hand chain connected to the outside of the hand chain wheel. A hook is fixedly installed in the middle of the top of the chain hoist body. A lifting component is arranged inside the chain hoist body. A fixing plate fixedly installed on the outer wall surface of the chain hoist body is arranged outside the lifting component. A protective cover plate is fixedly installed at the front end of the fixing plate. A sector-shaped installation block rotatably connected to the bottom end of the rear wall surface of the protective cover plate is arranged at the bottom side of the hand chain wheel. An arc-shaped movable groove is opened at the top of the left wall surface of the sector-shaped installation block. A braking mechanism is arranged inside the arc-shaped movable groove. The braking mechanism includes an arc-shaped slider slidably connected to the left end inside the arc-shaped movable groove and an arc-shaped spring arranged at the right end inside the arc-shaped movable groove. An adjusting mechanism is arranged at the bottom of the sector-shaped installation block. The adjusting mechanism includes a driving worm gear fixedly installed on the bottom arc wall surface of the sector-shaped installation block and a driving worm meshing with the bottom of the driving worm gear.

[0006] Furthermore, a rotating shaft rod is fixedly installed at the axial center position of the sector-shaped mounting block and is rotatably connected to the corresponding position of the rear wall surface of the protective cover plate.

[0007] Furthermore, one end of the arc-shaped slider located inside the arc-shaped movable groove is fixedly connected to the corresponding position of the inner wall surface of the arc-shaped movable groove through an arc-shaped spring.

[0008] Furthermore, the end of the arc-shaped slider away from the arc-shaped spring extends outside the arc-shaped movable groove and is clamped to the bottom of the bracelet wheel.

[0009] Furthermore, the top wall surface of the arc-shaped slider is arranged in an inclined state with the left side higher than the right side.

[0010] Furthermore, both the left and right ends of the driving worm are rotatably connected to the corresponding positions of the rear wall surface of the protective cover plate through brackets.

[0011] Furthermore, an adjusting worm gear is fixedly installed at the right end of the driving worm, and an adjusting worm that is rotatably connected to the rear wall surface of the protective cover plate is engaged with the bottom of the adjusting worm gear.

[0012] Furthermore, the front end of the adjusting worm penetrates through the rear wall surface of the protective cover plate and is fixedly installed with an adjusting knob.

[0013] Furthermore, the front end of the rotating shaft rod penetrates through the rear wall surface of the protective cover plate and is fixedly installed with a synchronous pointer.

[0014] Furthermore, the end of the synchronous pointer away from the rotating shaft rod corresponds to the top end position of the arc-shaped slider.

[0015] Beneficial effects

[0016] The utility model provides a convenient manual hoist. It has the following beneficial effects:

[0017] 1. This convenient hand chain hoist is provided with a braking mechanism and an adjusting mechanism. When in use, the device is hung at a designated position by a hook, and then the goods are hung by a load-bearing component. The hand chain is pulled to drive the hand chain wheel to rotate clockwise, and the teeth of the hand chain wheel squeeze the top inclined wall of the arc-shaped slider, forcing the arc-shaped slider to compress the arc spring and shrink and move inside the arc-shaped movable groove. When the hand chain wheel rotates counterclockwise, the top left part of the arc-shaped slider will conflict with the teeth at the corresponding position of the bottom end of the hand chain wheel to form a blockage, so that the hand chain wheel can only rotate in one direction, and then cooperate with the braking system to brake the goods, reducing the load of the braking system. When it is not necessary When the arc-shaped slider performs a braking operation on the hand sprocket, the adjusting knob can be rotated to drive the adjusting worm to rotate, forcing the adjusting worm wheel meshing with the adjusting worm wheel to drive the driving worm to rotate, thereby forcing the driving worm wheel meshing with the driving worm wheel to drive the upper part of the arc-shaped slider to rotate downward and move away from the bottom end of the hand sprocket through the fan-shaped mounting block, thereby releasing the braking effect of the arc-shaped slider on the hand sprocket. The braking effect of the arc-shaped slider on the hand sprocket can be restored by reverse operation, and the operation is not affected by the tooth groove position on the hand sprocket. The above operation is simple and practical, and the structure is reasonable and compact, which realizes the convenient recovery and release operation of the braking effect of the hand sprocket of the equipment, thereby improving the convenience of using the equipment.

[0018] 2. This convenient hand chain hoist is set up so that the staff can know the position of the top of the arc slider when the arc spring is in a normal state through the position of the synchronization pointer, which is convenient for the staff to adjust the position of the arc slider to release and restore the braking effect of the hand sprocket, further improving the convenience of using the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the utility model can be implemented, so they have no substantial technical significance.

[0020] Figure 1 This is a schematic diagram of the structure of a convenient hand chain hoist of the utility model;

[0021] Figure 2 It is a cross-sectional view of the brake mechanism of the utility model;

[0022] Figure 3 for Figure 1 A is an enlarged schematic diagram.

[0023] Legend:

[0024] 10. Hand chain hoist body; 11. Hook; 12. Lifting component; 13. Fixed plate; 14. Hand chain wheel; 15. Hand chain; 16. Protective cover plate; 17. Sector mounting block; 18. Rotating shaft rod; 19. Arc-shaped movable groove; 20. Arc-shaped slider; 21. Arc-shaped spring; 22. Driving worm gear; 23. Driving worm; 24. Adjusting worm gear; 25. Adjusting worm; 26. Adjusting knob; 27. Synchronization pointer. Detailed implementation manner

[0025] A convenient hand chain hoist, as Figures 1-3 shown, includes a hand chain hoist body 10, a hand chain wheel 14 rotatably connected to one side of the hand chain hoist body 10 through a rotating shaft, and a hand chain 15 connected to the outside of the hand chain wheel 14. A hook 11 is fixedly installed in the middle of the top end of the hand chain hoist body 10. A lifting component 12 is arranged inside the hand chain hoist body 10. The lifting component 12 is a prior art and will not be elaborated here. A fixed plate 13 fixedly installed on the outer wall surface of the hand chain hoist body 10 is arranged outside the lifting component 12. A protective cover plate 16 is fixedly installed at the front end of the fixed plate 13. A sector mounting block 17 rotatably connected to the bottom end of the rear wall surface of the protective cover plate 16 is arranged at the bottom side of the hand chain wheel 14. A rotating shaft rod 18 rotatably connected to the corresponding position of the rear wall surface of the protective cover plate 16 is fixedly installed at the axial center position of the sector mounting block 17. An arc-shaped movable groove 19 is formed at the top of the left wall surface of the sector mounting block 17. A braking mechanism is arranged inside the arc-shaped movable groove 19. The braking mechanism includes an arc-shaped slider 20 slidably connected to the left end inside the arc-shaped movable groove 19 and an arc-shaped spring 21 arranged at the right end inside the arc-shaped movable groove 19. One end of the arc-shaped slider 20 located inside the arc-shaped movable groove 19 is fixedly connected to the corresponding position of the inner wall surface of the arc-shaped movable groove 19 through the arc-shaped spring 21. The end of the arc-shaped slider 20 away from the arc-shaped spring 21 extends outside the arc-shaped movable groove 19 and is clamped to the bottom of the hand chain wheel 14. The top wall surface of the arc-shaped slider 20 is arranged in a left-high and right-low inclined state. An adjusting mechanism is arranged at the bottom of the sector mounting block 17. The adjusting mechanism includes a driving worm gear 22 fixedly installed on the bottom arc wall surface of the sector mounting block 17 and a driving worm 23 meshing with the bottom of the driving worm gear 22. Both the left and right ends of the driving worm 23 are rotatably connected to the corresponding positions of the rear wall surface of the protective cover plate 16 through brackets. An adjusting worm gear 24 is fixedly installed at the right end of the driving worm 23. An adjusting worm 25 meshing with the bottom of the adjusting worm gear 24 and rotatably connected to the rear wall surface of the protective cover plate 16 is arranged. The front end of the adjusting worm 25 penetrates through the rear wall surface of the protective cover plate 16 and is fixedly installed with an adjusting knob 26. The front end of the rotating shaft rod 18 penetrates through the rear wall surface of the protective cover plate 16 and is fixedly installed with a synchronization pointer 27. The end of the synchronization pointer 27 away from the rotating shaft rod 18 corresponds to the top end position of the arc-shaped slider 20.

[0026] The working principle of the utility model is as follows: when in use, the device is hung at a designated position by the hook 11, and then the goods are hung by the load-bearing assembly 12, and the hand chain 15 is pulled to drive the hand chain wheel 14 to rotate clockwise, and the teeth of the hand chain wheel 14 squeeze the top inclined wall of the arc-shaped slider 20, forcing the arc-shaped slider 20 to compress the arc spring 21 and shrink and move into the arc-shaped movable groove 19. When the hand chain wheel 14 rotates counterclockwise, the top left part of the arc-shaped slider 20 will conflict with the teeth at the corresponding position of the bottom end of the hand chain wheel 14 to form a blockage, so that the hand chain wheel 14 can only rotate in one direction, and then cooperate with the braking system to brake the goods and reduce the load of the braking system. When the arc-shaped slider 20 is not needed to brake the hand chain wheel 14, the adjusting knob 26 can be rotated to drive the adjusting worm 25 to rotate, forcing the adjusting worm wheel 24 meshing with the adjusting worm 25 to drive the driving worm The rod 23 rotates, thereby forcing the driving worm wheel 22 meshing with the driving worm 23 to drive the upper part of the arc slider 20 to rotate downward and move away from the bottom end of the hand chain wheel 14 through the fan-shaped mounting block 17, thereby releasing the braking effect of the arc slider 20 on the hand chain wheel 14. The braking effect of the arc slider 20 on the hand chain wheel 14 can be restored by reverse operation, and this operation is not affected by the position of the tooth grooves on the hand chain wheel 14. The above operation is simple and practical, with a reasonable and compact structure, which realizes the convenient recovery and release operation of the braking effect of the hand chain wheel 14 of the device, thereby improving the convenience of using the device; the staff can know the position of the top of the arc slider 20 when the arc spring 21 is in the normal state through the position of the synchronization pointer 27, which is convenient for the staff to adjust the position of the arc slider 20 to achieve the release and recovery of the braking effect of the hand chain wheel 14, thereby further improving the convenience of using the device.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A convenient chain block, comprising a chain block body (10), a hand chain wheel (14) rotatably connected to one side of the chain block body (10) through a rotating shaft, and a hand chain (15) connected to the outside of the hand chain wheel (14). A hook (11) is fixedly installed in the middle of the top end of the chain block body (10), and a lifting assembly (12) is arranged inside the chain block body (10), characterized in that: On the outside of the lifting component (12), a fixing plate (13) fixedly installed on the outer wall surface of the chain block body (10) is provided. A protective cover plate (16) is fixedly installed at the front end of the fixing plate (13). At the bottom side of the chain wheel (14), a sector-shaped mounting block (17) rotatably connected to the bottom end of the rear wall surface of the protective cover plate (16) is provided. At the top of the left wall surface of the sector-shaped mounting block (17), an arc-shaped movable groove (19) is formed. Inside the arc-shaped movable groove (19), a braking mechanism is provided. The braking mechanism includes an arc-shaped slider (20) slidably connected to the left end inside the arc-shaped movable groove (19) and an arc-shaped spring (21) arranged at the right end inside the arc-shaped movable groove (19). At the bottom of the sector-shaped mounting block (17), an adjusting mechanism is provided. The adjusting mechanism includes a driving worm gear (22) fixedly installed on the bottom arc wall surface of the sector-shaped mounting block (17) and a driving worm (23) meshing with the bottom of the driving worm gear (22).

2. The convenient chain block according to claim 1, characterized in that: At the axial center position of the sector-shaped mounting block (17), a rotating shaft rod (18) rotatably connected to the corresponding position of the rear wall surface of the protective cover plate (16) is fixedly installed.

3. The convenient chain hoist according to claim 1, characterized in that: One end of the arc-shaped slider (20) located inside the arc-shaped movable groove (19) is fixedly connected to the corresponding position of the inner wall surface of the arc-shaped movable groove (19) through the arc-shaped spring (21). The end of the arc-shaped slider (20) away from the arc-shaped spring (21) extends outside the arc-shaped movable groove (19) and is clamped to the bottom of the chain wheel (14). The top wall surface of the arc-shaped slider (20) is arranged in an inclined state with the left side higher than the right side.

4. The convenient chain hoist according to claim 1, wherein: Both the left and right ends of the driving worm (23) are rotatably connected to the corresponding positions of the rear wall surface of the protective cover plate (16) through brackets.

5. The convenient chain block according to claim 1, wherein: At the right end of the driving worm (23), an adjusting worm gear (24) is fixedly installed. At the bottom of the adjusting worm gear (24), an adjusting worm (25) meshing with the adjusting worm gear and rotatably connected to the rear wall surface of the protective cover plate (16) is provided. The front end of the adjusting worm (25) penetrates through the rear wall surface of the protective cover plate (16) and is fixedly installed with an adjusting knob (26).

6. The convenient chain hoist according to claim 2, wherein: The front end of the rotating shaft rod (18) penetrates through the rear wall surface of the protective cover plate (16) and is fixedly installed with a synchronous pointer (27). One end of the synchronous pointer (27) away from the rotating shaft rod (18) corresponds to the top end position of the arc-shaped slider (20).

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