Sprocket with anti-falling structure

Abstract

The utility model discloses a sprocket with anti -drop structure belongs to mechanical drive component technical field. Its technical scheme is, a sprocket with anti -drop structure, including sprocket body, the surface of sprocket body is provided with limit component, and the limit component inner chamber is provided with the deviation rectifying component. The utility model has the advantages that limit component is through the clamping of connecting block and insert block, connects first, second baffle, when installing chain, only need to push insert block compression first spring, can remove the clamping of insert block and connecting block slot, separately take down second baffle, do not need to disassemble and sprocket body connected first baffle, also do not need to move sprocket whole position, can directly expose the complete meshing area of sprocket gear, avoid the limitation that traditional integral type baffle or multi -component baffle need to dismantle whole to install chain, and the operator can more smoothly align the meshing of chain and gear, reduce the interference of chain installation and baffle.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission components, and in particular to a sprocket with an anti-detachment structure. Background Technology

[0002] As a key component in mechanical transmission systems, sprockets are widely used in industrial machinery, agricultural machinery, conveying equipment, and many other important fields due to their core advantages of stable meshing transmission and strong torque carrying capacity. For example, in the field of industrial machinery, they can be used in the continuous transmission links of assembly lines, the power distribution mechanisms and drive systems of machine tools, supporting the orderly progress of various parts processing and product assembly processes. In the field of agricultural machinery, they are adapted to the header drive of harvesters, the drive of the suspension working components of tractors, and the power connection of the seed metering mechanism of seeders, helping to efficiently advance core agricultural activities such as field cultivation and crop harvesting.

[0003] Chinese patent application CN216143135U discloses a sprocket with an anti-drop function. The sprocket includes three telescopic grooves on both sides, evenly spaced circumferentially on the same side. A connecting groove is formed on the inner wall of one side of each telescopic groove, and a pressing slider is slidably installed within it. An outer ring is fixedly installed on the side of the pressing slider away from the sprocket. Three support rods are evenly slidably fitted onto the side of the outer ring closest to the sprocket, and limit blocks are fixedly installed on the side of each support rod closest to the sprocket. This technical solution, by providing telescopic outer blocks on both sides of the sprocket, allows the outer blocks to rise after the chain is engaged, securing the chain and preventing it from slipping off during use. This improves the sprocket's operational stability and achieves the anti-chain-drop function.

[0004] Although this patented solution overcomes the drawback of traditional one-piece molded baffles requiring disassembly of the drive shaft to install the chain by using a linkage structure of telescopic slide, outer stop, and outer connecting ring, allowing the chain to be engaged with the sprocket before driving the outer stop to rise, thus initially simplifying the basic chain installation process, the installation operation still requires multiple precise steps. From pulling the component to compress the spring and aligning the small mating structure, to rotating the ring to drive the stop to rise, each step is interdependent. Any misalignment will cause installation to stall. In addition, the stop is a rigid fixed structure, and the gap between it and the sprocket remains fixed after it is raised, making it unsuitable for chains of different widths. When it is necessary to replace the chain with a different specification, the entire linkage structure must be disassembled and the stop position readjusted. Utility Model Content

[0005] To address the problems of difficulty in installing chains with anti-detachment structures and inability to adapt to chains of different widths, this utility model provides a sprocket with an anti-detachment structure.

[0006] To solve the above problems, the technical solution adopted by this utility model is a sprocket with an anti-detachment structure, including a sprocket body. A limiting component is provided on the surface of the sprocket body, and a correction component is provided in the inner cavity of the limiting component. The limiting component includes a first baffle. One side of the first baffle is detachably connected to the sprocket body. Connecting blocks are fixedly connected to both sides of the top of the first baffle. A fixing block is slidably connected to the top of the connecting block. A second baffle is fixedly connected to one side of the fixing block. The second baffle is located on top of the first baffle. A slot is opened on one side of the top of the connecting block. An insert block is engaged in the inner cavity of the slot. Both sides of the insert block are slidably connected to the fixing block. A first spring is provided on the rear side of the insert block. The other side of the first spring is fixedly connected to the fixing block. In this preferred embodiment, the first baffle and the second baffle can form a sealed space after being fastened together, which can effectively prevent external dust, oil, debris and other impurities from entering the meshing area between the sprocket body and the chain, avoiding the problems of meshing jamming and accelerated wear caused by impurities adhering to the gear teeth or chain links, and ensuring the smooth transmission between the chain and the sprocket body. The second baffle has slots on both sides so that the other end of the chain can extend out from the inner cavity of the second baffle, avoiding the second baffle from affecting the transmission of the chain.

[0007] Preferably, the correction assembly includes a pressure plate located at the top of the inner cavity of the second baffle. A guide rod is fixedly connected to the top of the pressure plate, and the top of the guide rod is slidably connected to the second baffle. A second spring is provided on the surface of the guide rod, and the top of the second spring is fixedly connected to the second baffle. In this preferred embodiment, the guide rod can prevent the second spring from shifting during extension and retraction. The second spring pushes the pressure plate to always be in contact with the top of the chain through its elastic force. When the chain shifts laterally, the pressure plate can use the elastic restoring force of the second spring to apply a reverse thrust to the chain on the shifted side, automatically correcting the chain position.

[0008] Preferably, a bolt is slidably connected to the bottom of the first baffle, the top of the bolt penetrating the bottom of the first baffle and threadedly connected to the sprocket body. In this preferred embodiment, the bolt allows the first baffle to be removed from the sprocket body, facilitating the replacement or maintenance of the internal sprocket body by personnel.

[0009] Preferably, there are two connecting blocks, symmetrically distributed on both sides of the top of the first baffle. In this preferred embodiment, the symmetrically arranged connecting blocks ensure the overall force balance of the second baffle and prevent deformation of the second baffle due to excessive tightness or looseness on one side.

[0010] Preferably, the fixing block has sliding grooves on both sides of its inner cavity, and a slider is slidably connected to the inner cavity of the sliding groove. The other side of the slider is fixedly connected to the insertion block. In this preferred embodiment, the sliding grooves and sliders can limit the range of motion and operation mode of the insertion block.

[0011] Preferably, the inner cavity of the first spring is provided with a limiting rod, one side of which is fixedly connected to the insert block, and the other side of which is slidably connected to the fixing block. In this preferred embodiment, the limiting rod can provide a stable telescopic guide for the first spring, preventing the first spring from twisting or bending when pushing the insert block to engage or unlock with the slot.

[0012] Preferably, the surface of the fixing block is provided with a pull plate, one side of which is fixedly connected to the limiting rod. In this preferred embodiment, the pull plate provides a convenient operating medium for the limiting rod, allowing the operator to directly move the limiting rod by pulling the pull plate, thereby removing the second baffle.

[0013] Preferably, a limiting plate is provided at the top of the second baffle, and the bottom of the limiting plate is fixedly connected to the guide rod. In this preferred embodiment, the limiting plate can restrict the range of motion of the guide rod, preventing it from detaching from the second baffle.

[0014] Preferably, the first baffle has positioning grooves on both sides of its top, and a positioning block is slidably connected to the inner cavity of each positioning groove. The top of the positioning block is fixedly connected to the second baffle. In this preferred embodiment, the positioning block and the positioning groove provide precise pre-positioning guidance when the second baffle is connected to the first baffle.

[0015] Preferably, a sealing gasket is provided on the top of the first baffle, and the top of the sealing gasket is fixedly connected to the second baffle. In this preferred embodiment, the sealing gasket can fill the connection gap between the first baffle and the second baffle through its own deformation, further improving the sealing performance.

[0016] As can be seen from the above technical solution, the advantages of this utility model are as follows: the limiting component connects the first and second baffles through the engagement of the connecting block and the insert block. When installing the chain, it is only necessary to push the insert block to compress the first spring, which can release the engagement between the insert block and the slot of the connecting block and remove the second baffle separately. There is no need to disassemble the first baffle connected to the sprocket body, nor is it necessary to move the overall position of the sprocket. The complete meshing area of ​​the sprocket teeth can be directly exposed, avoiding the limitation of traditional one-piece baffles or multi-component baffles that require disassembly of the whole to install the chain. Operators can more smoothly align and mesh the chain with the teeth, reducing interference between the chain and the baffle during installation. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0019] Figure 2 This is a schematic diagram of the limiting component in Embodiment 1 of this utility model.

[0020] Figure 3 This is an enlarged view of point A in Embodiment 1 of this utility model.

[0021] Figure 4 This is an enlarged view of section B in Embodiment 1 of this utility model.

[0022] Figure 5 This is an enlarged view of point C in Embodiment 1 of this utility model.

[0023] In the attached diagram: 1. Sprocket body; 2. Limiting assembly; 201. First baffle; 202. Connecting block; 203. Fixing block; 204. Second baffle; 205. Slot; 206. Insertion block; 207. First spring; 3. Correction assembly; 301. Pressure plate; 302. Guide rod; 303. Second spring; 4. Bolt; 5. Slide groove; 6. Slider; 7. Limiting rod; 8. Pull plate; 9. Limiting plate; 10. Positioning groove; 11. Positioning block; 12. Sealing gasket. Detailed Implementation

[0024] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments in this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0025] Example 1

[0026] like Figure 1-5As shown, a sprocket with an anti-detachment structure includes a sprocket body 1. A limiting component 2 is provided on the surface of the sprocket body 1. A correction component 3 is provided in the inner cavity of the limiting component 2. The limiting component 2 includes a first baffle 201. One side of the first baffle 201 is detachably connected to the sprocket body 1. Connecting blocks 202 are fixedly connected to both sides of the top of the first baffle 201. A fixing block 203 is slidably connected to the top of the connecting block 202. A second baffle 204 is fixedly connected to one side of the fixing block 203. The second baffle 204 is located on top of the first baffle 201. A slot 205 is opened on one side of the top of the connecting block 202. An insert block 206 is engaged in the inner cavity of the slot 205. Both sides of the insert block 206 are slidably connected to the fixing block 203. A first spring 207 is provided on the rear side of the insert block 206. The other side of the first spring 207 is fixedly connected to the fixing block 203.

[0027] When the first baffle 201 and the second baffle 204 are engaged, they form a sealed space that effectively prevents external dust, oil, debris and other impurities from entering the meshing area between the sprocket body 1 and the chain. This avoids problems such as meshing jamming and increased wear caused by impurities adhering to the teeth or chain links, and ensures the smooth transmission between the chain and the sprocket body 1. The second baffle 204 has slots on both sides so that the other end of the chain can extend out from the inner cavity of the second baffle 204, thus preventing the second baffle 204 from affecting the transmission of the chain.

[0028] The correction component 3 includes a pressure plate 301, which is located at the top of the inner cavity of the second baffle 204. A guide rod 302 is fixedly connected to the top of the pressure plate 301. The top of the guide rod 302 is slidably connected to the second baffle 204. A second spring 303 is provided on the surface of the guide rod 302. The top of the second spring 303 is fixedly connected to the second baffle 204.

[0029] The guide rod 302 can prevent the second spring 303 from shifting during the extension and retraction process. The second spring 303 pushes the pressure plate 301 to always be in contact with the top of the chain through elastic force. When the chain shifts laterally, the pressure plate 301 can use the elastic restoring force of the second spring 303 to apply a reverse thrust to the chain on the shifted side and automatically correct the chain position.

[0030] The bottom of the first baffle 201 is slidably connected to a bolt 4, and the top of the bolt 4 passes through the bottom of the first baffle 201 and is threadedly connected to the sprocket body 1.

[0031] The bolt 4 is installed so that the first baffle 201 can be removed from the sprocket body 1, so that the staff can replace or maintain the internal sprocket body 1.

[0032] There are two connecting blocks 202, which are symmetrically distributed on both sides of the top of the first baffle 201.

[0033] The symmetrically arranged connecting blocks 202 can ensure the overall force balance of the second baffle 204 and avoid deformation of the second baffle 204 due to excessive tightness or looseness on one side.

[0034] The fixed block 203 has a sliding groove 5 on both sides of its inner cavity. A slider 6 is slidably connected to the inner cavity of the sliding groove 5. The other side of the slider 6 is fixedly connected to the insert block 206.

[0035] The arrangement of the groove 5 and the slider 6 can limit the range of motion and operation mode of the insert 206.

[0036] The first spring 207 has a limiting rod 7 in its inner cavity. One side of the limiting rod 7 is fixedly connected to the insert block 206, and the other side of the limiting rod 7 is slidably connected to the fixing block 203.

[0037] The limiting rod 7 can provide a stable telescopic guide for the first spring 207, preventing the first spring 207 from twisting or bending when pushing the plug 206 to engage or unlock the slot 205.

[0038] Among them, the surface of the fixing block 203 is provided with a pull plate 8, and one side of the pull plate 8 is fixedly connected to the limiting rod 7.

[0039] The pull plate 8 provides a convenient operating platform for the limit rod 7. The operator can directly move the limit rod 7 by pulling the pull plate 8, thereby removing the second baffle 204.

[0040] The second baffle 204 is provided with a limiting plate 9 at the top, and the bottom of the limiting plate 9 is fixedly connected to the guide rod 302.

[0041] The limiting plate 9 can restrict the range of motion of the guide rod 302 to prevent it from detaching from the second baffle 204.

[0042] The first baffle 201 has positioning grooves 10 on both sides of its top, and a positioning block 11 is slidably connected to the inner cavity of the positioning groove 10. The top of the positioning block 11 is fixedly connected to the second baffle 204.

[0043] The positioning block 11 and the positioning groove 10 provide precise pre-positioning guidance when the second baffle 204 is connected to the first baffle 201.

[0044] The first baffle 201 is provided with a sealing gasket 12 at its top, and the top of the sealing gasket 12 is fixedly connected to the second baffle 204.

[0045] The sealing gasket 12 can fill the connection gap between the first baffle 201 and the second baffle 204 through its own deformation, further improving the sealing performance.

[0046] Working principle: When installing the chain, after installing the chain onto the sprocket body 1, the positioning block 11 on the second baffle 204 is aligned with the positioning groove 10 on the first baffle 201 and inserted. At this time, the connecting block 202 enters the inner cavity of the fixing block 203 and squeezes the insert block 206. The insert block 206 moves and compresses the first spring 207. When the connecting block 202 is fully inserted into the fixing block 203, the first spring 207 extends and pushes the insert block 206. The insert block 206 moves and enters the slot 205, thus completing the chain installation. At the same time, the second spring 303 pushes the pressure plate 301 to fit against the chain and limits its movement, so that the device can adapt to chains of different widths. The surface of the pressure plate 301 is provided with a molybdenum disulfide solid lubricating coating, which can effectively reduce the friction with the chain.

[0047] 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 novel features disclosed herein.

Claims

1. A sprocket with an anti-detachment structure, comprising a sprocket body (1), characterized in that, The sprocket body (1) is provided with a limiting component (2) on its surface, and the limiting component (2) is provided with a correction component (3) in its inner cavity; The limiting component (2) includes a first baffle (201), one side of which is detachably connected to the sprocket body (1). Connecting blocks (202) are fixedly connected to both sides of the top of the first baffle (201). A fixing block (203) is slidably connected to the top of the connecting block (202). A second baffle (204) is fixedly connected to one side of the fixing block (203). The second baffle (204) is located on the top of the first baffle (201). A slot (205) is provided on one side of the top of the connecting block (202). An insert (206) is engaged in the cavity of the slot (205). Both sides of the insert (206) are slidably connected to the fixing block (203). A first spring (207) is provided on the rear side of the insert (206). The other side of the first spring (207) is fixedly connected to the fixing block (203).

2. A sprocket with an anti-detachment structure according to claim 1, characterized in that, The correction assembly (3) includes a pressure plate (301), which is located at the top of the inner cavity of the second baffle (204). A guide rod (302) is fixedly connected to the top of the pressure plate (301). The top of the guide rod (302) is slidably connected to the second baffle (204). A second spring (303) is provided on the surface of the guide rod (302). The top of the second spring (303) is fixedly connected to the second baffle (204).

3. A sprocket with an anti-detachment structure according to claim 1, characterized in that, The bottom of the first baffle (201) is slidably connected with a bolt (4), the top of the bolt (4) passes through the bottom of the first baffle (201) and is threadedly connected to the sprocket body (1).

4. A sprocket with an anti-detachment structure according to claim 1, characterized in that, There are two connecting blocks (202), which are symmetrically distributed on both sides of the top of the first baffle (201).

5. A sprocket with an anti-detachment structure according to claim 1, characterized in that, The inner cavity of the fixed block (203) is provided with sliding grooves (5) on both sides, and a slider (6) is slidably connected to the inner cavity of the sliding groove (5). The other side of the slider (6) is fixedly connected to the insert block (206).

6. A sprocket with an anti-detachment structure according to claim 1, characterized in that, The inner cavity of the first spring (207) is provided with a limiting rod (7). One side of the limiting rod (7) is fixedly connected to the insert block (206), and the other side of the limiting rod (7) is slidably connected to the fixing block (203).

7. A sprocket with an anti-detachment structure according to claim 6, characterized in that, The surface of the fixing block (203) is provided with a pull plate (8), and one side of the pull plate (8) is fixedly connected to the limiting rod (7).

8. A sprocket with an anti-detachment structure according to claim 2, characterized in that, The second baffle (204) is provided with a limiting plate (9) at the top, and the bottom of the limiting plate (9) is fixedly connected to the guide rod (302).

9. A sprocket with an anti-detachment structure according to claim 1, characterized in that, The first baffle (201) has positioning grooves (10) on both sides of its top. A positioning block (11) is slidably connected to the inner cavity of the positioning groove (10). The top of the positioning block (11) is fixedly connected to the second baffle (204).

10. A sprocket with an anti-detachment structure according to claim 2, characterized in that, The top of the first baffle (201) is provided with a sealing gasket (12), and the top of the sealing gasket (12) is fixedly connected to the second baffle (204).

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