Mining high strength compact chain∅26×92-C、∅30×108-C、∅34×126-C、∅38×126-D、∅38×137-D、∅42×146-C、∅48×152-C

1. The raw material of the traditional mining ring chain is round bar material. The contact surface between the chain links after the chain is made is very small. In theory, it is line contact. When it bears the load, the stress is very high and the wear is very fast when it is used. Some influential manufacturers and research units at home and abroad have studied and summarized the influence law of the geometric shape of the chain on its mechanical properties through the stress analysis of the traditional mining ring chain, found out the relationship between the geometric shape of the chain and the mechanical properties, carried out the optimal design of the size and shape of the chain within the scope of the standard, and improved the mechanical properties of the chain. However, it can not solve the problem that the chain links wear too fast in the running in period.

2. In recent years, the power of our country's scraper conveyor is developing in a more and more big direction, and presents a kind of fast and jumping development trend. Therefore, the specifications of mine high strength round link chain are also growing, which promotes the continuous upgrading of chain manufacturing equipment and the generation and development of new chain manufacturing technology. In order to improve the mechanical properties of mining ring chain and increase the conveying capacity of the conveyor under certain conditions such as coal mine, in terms of the size and geometry of the chain link, foreign countries have taken the lead in optimizing the design of the chain link, and achieved good results, breaking the single shape and structure of mining ring chain! Form, making the shape and structure of mining ring chain revolutionary change.

3. According to the actual use of the ring chain in the coal mine, change the geometry and relevant dimensions of the traditional mining ring chain, and design a new chain shape and chain structure. For example, the development of variable cross-section chain (that is, when the chain link bears the load, the cross-section of the parts with high stress is larger, and the cross-section of the parts with small stress is smaller), which greatly reduces the stress concentration on the chain link and improves the service life of the chain. "Compact chain" is a kind of mining chain with welding ring and forging ring alternating.