Chain wheel with anti-off structure

Abstract

The utility model discloses a chain wheel with anti -unhinging structure belongs to chain wheel technical field, and chain wheel movable installation is in the middle part of pivot, the both sides of pivot are installed with the symmetrical support frame, the bottom of support frame is provided with the sleeve that sets up on the sleeve of pivot, is installed with locking ring on the sleeve screw thread, the top telescopic installation of support frame has the motion frame, and the detachable installation of motion frame has the crosspiece between, the both sides fixed of crosspiece are provided with the symmetrical deflector, this application can install support frame fast through the sleeve of both sides, and can adjust the angle of support frame according to actual demand freely. When locking ring rotates along the sleeve to the outside, locking ring locks the outside of sleeve. In the initial state, chain does not adhere with the crosspiece and deflector of top, when chain swings up and down, the crosspiece can buffer chain, avoids its swing amplitude too big and accidental drop, and this design improves the degree of freedom and work effect.

Description

Technical Field

[0001] This utility model relates to the field of sprocket technology, specifically a sprocket with an anti-chain-derailment structure. Background Technology

[0002] A sprocket is a wheel with interlocking teeth used to mesh with precisely pitched blocks on chain links or cables. Sprockets are widely used in mechanical transmissions in industries such as chemical engineering, textile machinery, escalators, woodworking, automated parking systems, agricultural machinery, food processing, instrumentation, and petroleum. As a relatively new gear product, sprockets offer high transmission speeds. Their high rotational speed results in very low noise during application, contributing to a better processing environment. Sprockets are not only installed with high precision but also have excellent machining accuracy, significantly reducing maintenance hassles. Furthermore, their compact structure allows for a large transmission ratio and a long service life.

[0003] Chinese patent application CN221547711U discloses an anti-chain derailment sprocket, including a chain disc and chain teeth fixedly connected to the chain disc. It also includes two retaining plates, a connecting plate corresponding to the retaining plates, a limiting block, and a spring. The two retaining plates are fixedly connected to the side walls on both sides of the chain disc, and the center of the retaining plates is symmetrical to the center of the chain disc. The connecting plate is rotatably connected to the retaining plates and is detachably and fixedly connected to an external frame. The limiting block is slidably connected to the connecting plate, and one end of the spring is fixedly connected to the limiting block. The spring can drive the limiting block to move to a position opposite to the chain teeth, thus preventing the chain from derailing. By placing the chain inside the retaining plates and using the limiting block to limit the chain, the sprocket can be effectively prevented from derailing, thereby preventing external equipment from stopping due to chain derailment, further improving the processing and transmission efficiency of external equipment, and reducing manpower requirements.

[0004] However, the anti-slip chain wheels disclosed above generally have limited freedom of movement, cumbersome installation processes, and lack a quick installation structure. Utility Model Content

[0005] The purpose of this utility model is to provide a sprocket with an anti-sprocket structure in order to solve the problems of limited freedom of the anti-sprocket in the prior art, cumbersome installation process, and lack of a quick installation structure.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a sprocket with an anti-derailment structure, comprising a sprocket and a rotating shaft, wherein the sprocket is movably mounted in the middle of the rotating shaft; symmetrical support frames are mounted on both sides of the rotating shaft, and a sleeve fitted onto the rotating shaft is provided at the bottom of the support frame, with a locking ring threaded onto the sleeve; a movable frame is retractably mounted on the top of the support frame, and a crossbeam is detachably mounted between the movable frames, with symmetrical guide plates fixedly mounted on both sides of the crossbeam.

[0007] As a further improvement of this utility model: multiple sets of slots are provided on the outer side of the sleeve, the diameter of the sleeve gradually decreases along the slots outward, and a threaded portion is also provided on the outer wall of the sleeve.

[0008] As a further improvement of this utility model, multiple anti-slip grooves are formed on the outer wall of the locking ring.

[0009] As a further embodiment of this utility model: the top of the support frame is provided with a telescopic cavity, the bottom of the moving frame is provided with a limiting post, and the moving frame is movably disposed in the telescopic cavity through the limiting post; a return spring is also provided in the telescopic cavity, and the top of the return spring is connected to the limiting post.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] This application allows for quick installation of the support frame via sleeves on both sides, and the angle of the support frame can be freely adjusted according to actual needs. When the locking ring rotates outward along the sleeve, it locks onto the outer side of the sleeve, thus fixing the sleeve to the shaft. Initially, the chain does not contact the upper crossbar and guide plate. When the chain vibrates and swings up and down, the crossbar cushions the chain, preventing excessive swing and accidental slippage. This design improves the freedom of movement and working efficiency of the sprocket with its anti-chain slippage structure. Attached Figure Description

[0012] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a three-dimensional structural diagram of the support frame in this utility model;

[0015] Figure 3 This is a three-dimensional structural diagram of the motion frame and cross frame in this utility model.

[0016] Explanation of reference numerals in the attached figures:

[0017] 1. Sprocket; 2. Shaft; 3. Support frame; 4. Sleeve; 5. Groove; 6. Threaded part; 7. Locking ring; 8. Anti-slip groove; 9. Telescopic cavity; 10. Return spring; 11. Moving frame; 12. Limiting post; 13. Cross frame; 14. Guide plate. Detailed Implementation

[0018] The following will be combined with the appendix Figures 1 to 3 The technical solution of this utility model has been clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] This utility model provides an improved sprocket with an anti-derailment structure, such as... Figures 1-3 As shown, it includes a sprocket 1 and a rotating shaft 2. The sprocket 1 is movably installed in the middle of the rotating shaft 2. Symmetrical support frames 3 are installed on both sides of the rotating shaft 2. A sleeve 4 is provided at the bottom of the support frame 3 and fitted onto the rotating shaft 2. A locking ring 7 is threaded on the sleeve 4. A moving frame 11 is telescopically installed on the top of the support frame 3. A cross frame 13 is detachably installed between the moving frames 11. Symmetrical guide plates 14 are fixedly installed on both sides of the cross frame 13.

[0020] This application allows for quick installation of the support frame 3 via the sleeves 4 on both sides, and the angle of the support frame 3 can be freely adjusted according to actual needs. When the locking ring 7 rotates outward along the sleeve 4, the locking ring 7 locks the outer side of the sleeve 4, so the sleeve 4 can be fixed on the rotating shaft 2. In the initial state, the chain does not contact the upper crossbar 13 and guide plate 14. When the chain vibrates and swings up and down, the crossbar 13 can buffer the chain, preventing it from swinging too much and accidentally falling off. This design improves the freedom of movement and working efficiency of the sprocket with the anti-chain-derailment structure.

[0021] See appendix Figure 1 -Appendix Figure 2 The sleeve 4 has multiple sets of slots 5 on its outer side. The diameter of the sleeve 4 gradually decreases along the slots 5 to the outer side. The outer wall of the sleeve 4 is also provided with a threaded part 6.

[0022] In this embodiment: when installing the support frame 3 onto the rotating shaft 2, the sleeve 4 is first fitted onto the rotating shaft 2. Due to the grooved structure 5, the outer side of the sleeve 4 is designed to be flexible and can deform. When the locking ring 7 rotates outward along the sleeve 4, the locking ring 7 locks the outer side of the sleeve 4.

[0023] See appendix Figure 1 -Appendix Figure 2 Multiple anti-slip grooves 8 are provided on the outer wall of the locking ring 7.

[0024] In this embodiment: During installation, in order to increase friction and facilitate the rotation of the locking ring 7 to lock the sleeve 4, a structure with multiple anti-slip grooves 8 is designed.

[0025] See appendix Figure 3 The top of the support frame 3 is provided with a telescopic cavity 9, and the bottom of the motion frame 11 is provided with a limit post 12. The motion frame 11 is movably set in the telescopic cavity 9 through the limit post 12. A return spring 10 is also provided in the telescopic cavity 9, and the top of the return spring 10 is connected to the limit post 12.

[0026] In this embodiment: In the initial state, the limiting post 12 is completely located inside the telescopic cavity 9, and the outer wall of the motion frame 11 is in contact with the outer wall of the support frame 3. At this time, the chain is not in contact with the upper arc-shaped guide plate 14. When the chain swings unexpectedly, the cross frame 13 can buffer the chain to avoid excessive swing amplitude causing accidental fall.

[0027] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and inventive features disclosed herein.

Claims

1. A sprocket with an anti-derailment structure, characterized in that: Includes a sprocket (1) and a rotating shaft (2), the sprocket (1) is movably installed in the middle of the rotating shaft (2); symmetrical support frames (3) are installed on both sides of the rotating shaft (2), and a sleeve (4) is provided at the bottom of the support frame (3) and fitted on the rotating shaft (2), and a locking ring (7) is threaded on the sleeve (4); a moving frame (11) is telescopically installed on the top of the support frame (3), and a cross frame (13) is detachably installed between the moving frames (11), and symmetrical guide plates (14) are fixedly provided on both sides of the cross frame (13).

2. A sprocket with an anti-derailment structure according to claim 1, characterized in that: The sleeve (4) has multiple sets of slots (5) on its outer side. The diameter of the sleeve (4) gradually decreases along the slots (5) to the outer side. The outer wall of the sleeve (4) is also provided with a threaded part (6).

3. A sprocket with an anti-derailment structure according to claim 1, characterized in that: Multiple anti-slip grooves (8) are provided on the outer wall of the locking ring (7).

4. A sprocket with an anti-derailment structure according to claim 1, characterized in that: The top of the support frame (3) is provided with a telescopic cavity (9), and the bottom of the motion frame (11) is provided with a limiting post (12). The motion frame (11) is movably set in the telescopic cavity (9) through the limiting post (12).

5. A sprocket with an anti-derailment structure according to claim 4, characterized in that: A reset spring (10) is also provided inside the telescopic cavity (9), and the top of the reset spring (10) is connected to the limiting post (12).

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