Self-lubricating high-stability waterproof and rustproof chain
By designing a self-lubricating, highly stable, waterproof, and rust-proof chain, a combination of nano-waterproof coating and rust-proof reinforcement layer is adopted. The inner chain plate, oil box, threaded joint, and slow-release hole are matched to achieve self-lubrication and double protection of the chain, solving the problems of poor lubrication and corrosion, and improving the chain's running stability and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG BUSSMANN MACHINE CO LTD
- Filing Date
- 2025-11-14
- Publication Date
- 2026-07-24
AI Technical Summary
Existing chains have poor lubrication during transmission, are prone to rust, cannot meet the requirements for high and stable operation, and have a short service life in complex environments.
A self-lubricating, highly stable, waterproof, and rust-proof chain is designed, which combines a nano-waterproof coating and a rust-proof reinforcement layer. The inner chain plate, oil box, threaded joint, and slow-release hole work together to achieve self-lubrication, and a double protection structure is formed between the outer chain plate and the inner chain components.
It achieves a self-lubricating effect on the chain, reduces wear, improves operational stability, prevents corrosion, extends service life, and adapts to highly stable operation in complex environments.
Smart Images

Figure CN224550709U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of mechanical transmission components, and in particular to a self-lubricating, highly stable, waterproof and rust-proof chain. Background Technology
[0002] In the fields of mechanical transmission and material conveying, chains, as core transmission components, directly affect the overall working efficiency and service life of equipment due to their operational stability, wear resistance, and corrosion resistance. Existing chains mostly adopt traditional structural designs, requiring regular manual lubrication of rotating parts such as pins, chain plates, bushings, and rollers during transmission. This is not only cumbersome and costly to maintain, but also prone to oil loss or contamination, leading to poor lubrication, accelerated component wear, and problems such as chain jamming and abnormal noise, making it difficult to meet the requirements for high-stability operation. Furthermore, chains often operate in complex environments such as outdoors, in humid conditions, and dust. Existing chains lack effective protective structures, allowing moisture, humidity, and corrosive media to easily penetrate the surface of components and connection gaps, causing rust and corrosion of chain plates, pins, rollers, and other parts. This not only reduces the chain's transmission accuracy and structural strength but also shortens its service life. Therefore, a self-lubricating, highly stable, waterproof, and rust-proof chain needs to be designed to solve these problems. Utility Model Content
[0003] The main purpose of this utility model is to provide a self-lubricating, highly stable, waterproof and rust-proof chain, which can effectively solve the problems in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A self-lubricating, highly stable, waterproof, and rust-proof chain includes an outer chain plate one and an outer chain plate two arranged parallel to the outer chain plate one. Two inner chain components are symmetrically arranged between the outer chain plate one and the outer chain plate two. The two inner chain components are spaced apart along the length of the chain and are detachably connected to the outer chain plate one and the outer chain plate two through the same pin. The outer chain plate one has a connecting groove one for inserting the pin at the position corresponding to the two inner chain components. Fastening sleeves are fitted on the outer sides of both ends of the pin. The outer surfaces of the outer chain plate one and the outer chain plate two are coated with a nano-waterproof coating, and a rust-proof reinforcing layer is attached to the inner side of the nano-waterproof coating.
[0006] Preferably, each inner chain assembly includes an inner chain plate one and an inner chain plate two disposed opposite to each other. A sleeve is fixedly provided between the inner chain plate one and the inner chain plate two. A roller is movably sleeved on the outer side of the sleeve. The roller is rotatably engaged with the sleeve. Each inner chain plate one and the inner chain plate two are provided with a connecting groove two coaxially corresponding to the connecting groove. The inner wall of each connecting groove two is provided with multiple slow-release holes.
[0007] Preferably, the pin passes through the connecting groove one of the outer chain plate and the connecting groove two of the two inner chain components in sequence and is fixedly connected to the outer chain plate two, so as to realize the series fixation of the two inner chain components.
[0008] Preferably, each of the inner chain plate one and inner chain plate two has a threaded groove in the middle of its upper plate wall, and a threaded joint is fixedly installed in each threaded groove. The top of the threaded joint is integrally formed with an oil box, and the threaded joint is connected to the internal cavity of the oil box. The top of the oil box is connected to a top cover by threads.
[0009] Preferably, the rust-proof and reinforcing layer fully covers the outer surfaces of the inner chain plate one, inner chain plate two, sleeve and roller of the two inner chain components, and the rust-proof and reinforcing layer is a galvanized layer with a thickness of 0.05mm.
[0010] Preferably, the nano-waterproof coating covers the side of the anti-rust reinforcement layer away from the component body, and the nano-waterproof coating is closely adhered to the anti-rust reinforcement layer to form a double protective structure.
[0011] Preferably, the plurality of the slow-release holes are evenly distributed in a ring along the inner wall of the connecting groove 2.
[0012] Preferably, the outer surface of the roller is a smooth cylinder, and there is a gap between the two end faces of the roller and the inner sidewalls of the first inner chain plate and the second inner chain plate.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. In this utility model, the lubricating oil stored in the oil box can be delivered to the slow release hole through the threaded joint by the cooperation between the inner chain plate, the oil box, the threaded joint, and the slow release hole. The lubricating oil is then slowly released to the mating parts of the pin and the connecting groove, and the sleeve and the roller, so as to achieve chain self-lubrication, reduce motion wear, ensure smooth operation, and solve the problems of poor lubrication effect and insufficient running stability of traditional chains.
[0015] 2. In this utility model, the anti-rust reinforcement layer, the nano waterproof coating, the outer chain plate, and the inner chain components work together to ensure that the anti-rust reinforcement layer fully covers the surface of the components, and the nano waterproof coating adheres tightly to the outside to form double protection, effectively blocking the intrusion of moisture and corrosive media, preventing the components from rusting, and solving the problems of poor waterproof and anti-rust performance and short service life of existing chains. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of a self-lubricating, highly stable, waterproof, and rust-proof chain according to the present invention;
[0017] Figure 2 This is a schematic diagram of the overall disassembled structure of a self-lubricating, highly stable, waterproof, and rust-proof chain according to the present invention;
[0018] Figure 3 This is a schematic diagram of the disassembled structure of the inner chain component of a self-lubricating, highly stable, waterproof, and rust-proof chain according to this utility model;
[0019] Figure 4 This is a schematic diagram of the coating material structure of a self-lubricating, highly stable, waterproof, and rust-proof chain according to this utility model.
[0020] In the diagram: 1. Outer link plate one; 2. Inner link assembly; 3. Outer link plate two; 4. Pin; 5. Connecting groove one; 6. Fastening sleeve; 7. Nano waterproof coating; 8. Rust-proof reinforcement layer; 21. Inner link plate one; 22. Roller; 23. Sleeve; 24. Inner link plate two; 25. Oil box; 26. Threaded joint; 27. Top cover; 28. Threaded groove; 29. Connecting groove two; 210. Slow-release hole. Detailed Implementation
[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] Please see Figure 1-4 This utility model provides a technical solution:
[0025] A self-lubricating, highly stable, waterproof, and rust-proof chain, such as Figure 1-4As shown, it includes an outer chain plate 1 and an outer chain plate 2 3 arranged parallel to the outer chain plate 1. Two inner chain components 2 are symmetrically arranged between the outer chain plate 1 and the outer chain plate 2 3. The two inner chain components 2 are spaced apart along the length of the chain and are detachably connected to the outer chain plate 1 and the outer chain plate 2 3 through the same pin 4. The outer chain plate 1 has a connecting groove 5 for inserting the pin 4 at the position corresponding to the two inner chain components 2. Fastening sleeves 6 are fitted on the outer sides of both ends of the pin 4. The outer surfaces of the outer chain plate 1 and the outer chain plate 2 3 are coated with a nano waterproof coating 7. A rust-proof reinforcing layer 8 is attached to the inner side of the nano waterproof coating 7.
[0026] Please see Figure 2 and Figure 3 Each inner chain assembly 2 includes an inner chain plate 1 21 and an inner chain plate 24 arranged opposite to each other. A sleeve 23 is fixedly provided between the inner chain plate 1 21 and the inner chain plate 24. A roller 22 is movably sleeved on the outer side of the sleeve 23. The roller 22 and the sleeve 23 are rotatably engaged. Each inner chain plate 1 21 and the inner chain plate 24 are provided with a connecting groove 29 coaxial with the connecting groove 1 5. The inner wall of each connecting groove 29 is provided with multiple slow-release holes 210. Each inner chain plate Both the upper plate wall of the first 21 and the inner chain plate 24 have threaded grooves 28 in the middle. Each threaded groove 28 has a threaded connector 26 fixedly installed in it. The top of the threaded connector 26 is integrally formed with an oil box 25. The threaded connector 26 is connected to the internal cavity of the oil box 25. The top of the oil box 25 is connected to a top cover 27 by threads. Multiple slow-release holes 210 are evenly distributed in a ring along the inner wall of the connecting groove 29.
[0027] Through the above scheme: the sleeve 23 fixed between the inner chain plate 1 21 and inner chain plate 24, which are arranged opposite to each other in the inner chain assembly 2, forms a rotational engagement with the outerly movably sleeved roller 22. It engages with the connecting groove 29, which is coaxial with the connecting groove 1 5, on the inner chain plate 1 21 and inner chain plate 24, and the multiple slow-release holes 210 evenly distributed in annularly on the inner wall of the connecting groove 29. At the same time, the threaded joint 26 fixedly installed in the threaded groove 28 in the middle of the upper wall of the inner chain plate 1 21 and inner chain plate 24 is connected to the internal cavity of the oil box 25 integrally formed on the top. The oil box 25 stores lubricating oil in a sealed manner through the top cover 27, so that the lubricating oil is delivered to the slow-release holes 210 through the threaded joint 26 and slowly released to the engagement part of the connecting groove 29 and the pin 4 and the rotating part of the sleeve 23 and the roller 22, thereby achieving the chain self-lubrication effect, reducing motion wear, improving running smoothness, and helping to achieve the high stability operation requirements.
[0028] Please see Figure 4The pin 4 passes through the connecting groove 5 of the outer link plate 1 and the connecting groove 29 of the two inner link components 2 in sequence, and is fixedly connected to the outer link plate 3, realizing the series fixation of the two inner link components 2. The rust-proof and strengthening layer 8 completely covers the outer surface of the inner link plate 21, inner link plate 24, sleeve 23 and roller 22 of the two inner link components 2. The rust-proof and strengthening layer 8 is a galvanized layer with a thickness of 0.05mm. The nano waterproof coating 7 covers the side of the rust-proof and strengthening layer 8 away from the component body, and the nano waterproof coating 7 is tightly attached to the rust-proof and strengthening layer 8 to form a double protection structure.
[0029] Through the above scheme: the pin 4 passes through the connecting groove 5 of the outer chain plate 1 and the connecting groove 29 of the two inner chain components 2 in sequence and is fixedly connected to the outer chain plate 3, which firmly realizes the series fixation of the two inner chain components 2 and ensures the overall connection stability of the chain. At the same time, the 0.05mm thick galvanized anti-rust strengthening layer 8 that fully covers the outer surface of the inner chain plate 21, inner chain plate 24, sleeve 23 and roller 22 of the inner chain component 2, together with the nano waterproof coating 7 that covers the outside and fits tightly, forms a double protection structure, which effectively blocks the intrusion of moisture and impurities, avoids the rust and corrosion of the components, significantly improves the waterproof and anti-rust performance of the chain, extends the service life, and ensures that the chain can still maintain a highly stable operating state in complex environments.
[0030] It should be noted that this utility model is a self-lubricating, highly stable, waterproof, and rust-proof chain. It consists of two inner chain components 2 symmetrically arranged between outer chain plate 1 and outer chain plate 2, spaced apart along the chain length. These components are connected to outer chain plate 2 by a single pin 4, which passes sequentially through the connecting groove 5 of outer chain plate 1 and the connecting groove 29 of the two inner chain components 2. This achieves series connection and fixation of the two inner chain components 2. The rollers 22 movably fitted on the outer side of the sleeve 23 fixed between inner chain plate 1 and inner chain plate 24 in the inner chain component 2 have smooth cylindrical outer surfaces. The end faces of the rollers have gaps with the inner walls of inner chain plate 1 and inner chain plate 24, allowing them to rotate relative to the sleeve 23. These rollers mate with the connecting groove 29. Multiple slow-release holes 210 evenly distributed in an annular pattern on the inner wall of the bore slowly release the lubricating oil stored in the oil box 25 connected by the threaded joint 26 in the screw groove 28 of the inner chain plate 1 21 and the inner chain plate 24 to the rotating parts to achieve self-lubrication. The fastening sleeves 6 sleeved on the outer sides of both ends of the pin 4 enhance the connection stability. At the same time, the 0.05mm thick galvanized anti-rust strengthening layer 8 that fully covers the outer surfaces of the outer chain plate 1 1, the outer chain plate 2 3, and the outer surfaces of the inner chain plates 21 21, the inner chain plate 2 24, the sleeve 23, and the roller 22 of the two inner chain components 2, together with the nano waterproof coating 7 that covers the outside of the anti-rust strengthening layer 8 and fits tightly to form a double protective structure, work together to play a waterproof and anti-rust role, ensuring the high stability of the chain operation.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A self-lubricating, highly stable, waterproof, and rust-proof chain, characterized in that: The system includes an outer chain plate 1 (1) and an outer chain plate 2 (3) arranged parallel to the outer chain plate 1 (1). Two inner chain components (2) are symmetrically arranged between the outer chain plate 1 (1) and the outer chain plate 2 (3). The two inner chain components (2) are spaced apart along the length of the chain and are detachably connected to the outer chain plate 1 (1) and the outer chain plate 2 (3) through the same pin (4). The outer chain plate 1 (1) is provided with a connecting groove 1 (5) for inserting the pin (4) at the position corresponding to the two inner chain components (2). Fastening sleeves (6) are fitted on the outer sides of both ends of the pin (4). The outer surfaces of the outer chain plate 1 (1) and the outer chain plate 2 (3) are coated with a nano waterproof coating (7). A rust-proof reinforcing layer (8) is attached to the inner side of the nano waterproof coating (7).
2. The self-lubricating, highly stable, waterproof, and rust-proof chain according to claim 1, characterized in that: Each inner chain assembly (2) includes an inner chain plate one (21) and an inner chain plate two (24) arranged opposite to each other. A sleeve (23) is fixedly provided between the inner chain plate one (21) and the inner chain plate two (24). A roller (22) is movably sleeved on the outside of the sleeve (23). The roller (22) rotates with the sleeve (23). Each inner chain plate one (21) and inner chain plate two (24) is provided with a connecting groove two (29) coaxial with the connecting groove one (5). The inner wall of each connecting groove two (29) is provided with multiple slow-release holes (210).
3. The self-lubricating, highly stable, waterproof, and rust-proof chain according to claim 1, characterized in that: The pin (4) passes through the connecting groove (5) of the outer chain plate (1) and the connecting groove (29) of the two inner chain components (2) in sequence and is fixedly connected to the outer chain plate (3) to realize the series fixation of the two inner chain components (2).
4. The self-lubricating, highly stable, waterproof, and rust-proof chain according to claim 2, characterized in that: Each of the inner chain plate one (21) and inner chain plate two (24) has a threaded groove (28) in the middle of the upper plate wall. A threaded connector (26) is fixedly installed in each of the threaded grooves (28). An oil box (25) is integrally formed on the top of the threaded connector (26). The threaded connector (26) is connected to the internal cavity of the oil box (25). A top cover (27) is connected to the top of the oil box (25) by threads.
5. The self-lubricating, highly stable, waterproof, and rust-proof chain according to claim 1, characterized in that: The rust-proof strengthening layer (8) fully covers the outer surfaces of the inner chain plate one (21), inner chain plate two (24), sleeve (23) and roller (22) of the two inner chain components (2). The rust-proof strengthening layer (8) is a galvanized layer with a thickness of 0.05 mm.
6. The self-lubricating, highly stable, waterproof, and rust-proof chain according to claim 1, characterized in that: The nano-waterproof coating (7) covers the side of the anti-rust reinforcement layer (8) away from the component body, and the nano-waterproof coating (7) and the anti-rust reinforcement layer (8) are closely bonded to form a double protection structure.
7. The self-lubricating, highly stable, waterproof, and rust-proof chain according to claim 2, characterized in that: The multiple slow-release holes (210) are evenly distributed in a ring along the inner wall of the connecting groove 2 (29).
8. The self-lubricating, highly stable, waterproof, and rust-proof chain according to claim 2, characterized in that: The outer surface of the roller (22) is a smooth cylinder, and there is a gap between the two end faces of the roller (22) and the inner sidewalls of the inner chain plate one (21) and the inner chain plate two (24).