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 stress on the link. Among them, it is very important to ensure the normal engagement of the ring chain, the link and the sprocket wheel.
With the wear and tear in the use process, the meshing relationship among the chain, sprocket wheel and chain link is also changing constantly. During the operation and maintenance of the equipment, it is necessary to pay attention to the operation status of the three, such as the chain and chain link can not be meshed normally, so it is necessary to carefully analyze the causes. If necessary, replace the chain link or sprocket wheel. If the frequent shutdown is caused by the chain break, it is necessary to take care of the chain and sprocket Replace all wheels.
Other matters needing attention in maintenance and repair of connecting link
Flat arc tooth type 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 the connecting link is one of the reasons for the chain breaking accident. For example, when designing the 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 the operation accident of the scraper. 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.