In order to realize the high reliability and long service life of the link used in the ring chain, the maintenance and repair of the link must be done well to ensure the normal use environment of the link and avoid the abnormal force on the link. It is very important to ensure the normal engagement of the link, the link and the sprocket.

With the wear in the use process, the meshing relationship of the chain, sprocket and chain link is also constantly changing. In the operation and maintenance of the equipment, attention should be paid to the operation status of the three. If the chain and chain link cannot mesh normally, it is necessary to carefully analyze the causes. If necessary, replace the chain link or chain wheel. If frequent shutdown is caused by chain break, it is necessary to replace all the chains and sprockets.

Other matters needing attention in the repair and maintenance of serrated link

1. Ensure the correct installation direction of the link, install the spacer to the correct position, mark the position in a straight line, and do not insert any parts between the link

2. If there are bolts, confirm that the bolts are in the correct position and locked

3. Check every three months or 1 million tons of coal passing capacity (once a month if it is used for the transfer machine)

4. Regularly check the impact of accidental damage and corrosion of the link on the strength of the link, replace the damaged link in time to prevent the chain breaking and shutdown accident, and avoid the damage of the whole machine caused by the chain breaking.

5. The manufacturing quality of connecting link is one of the causes of chain breaking accidents. For example, in the design of connecting link, there are manufacturing quality problems such as material cutting or processing technology problems, or there are impurities inside the processing link, which will cause scraper operation accidents. It is suggested that coal mining enterprises should control the warehousing of equipment, select high-quality chain link products, and forbid the storage of unqualified products.