Six rules of bridge crane chain maintenance
Every component in the bridge crane equipment is indispensable, and all play a role in linking up and down. The chain is the direct force component of the overhead crane, which is essential and very important for its maintenance and maintenance. I have compiled 6 pieces of knowledge about how to maintain it, and share them with you here. The details are as follows:
1. The sprocket should be installed on the shaft without skew or swing. The end faces of the two sprockets in the same transmission assembly should be in the same plane. When the center distance of the sprocket is less than 0.5 meters, the allowable deviation is 1 mm. When the center distance of the sprocket is more than 0.5 meters, the allowable deviation is 2 mm. However, it is not allowed to rub the side of the sprocket tooth. If the two-wheel knitting is too large, it is easy to cause chain disconnection and accelerated wear. When replacing the sprocket, you must pay attention to check and adjust the offset.
2. The tightness of the bridge crane chain should be appropriate. Too tight increases power consumption, bearings are easy to wear, too loose, and the chain is easy to jump and fall off the chain. The tightness of the chain is: lifted or pressed down from the middle of the chain, the center distance between the two sprockets is about 2%-3%.
3. The new bridge crane chain is too long or stretched after use, and it is difficult to adjust. You can remove the chain link depending on the situation, but it must be an even number. The chain link should pass through the back of the chain, the lock piece should be inserted outside, and the opening of the lock piece should face the opposite direction of rotation.
4. After the sprocket is severely worn, the new sprocket and the new chain should be replaced at the same time to ensure good meshing. It is not possible to just replace a new chain or a new sprocket alone. Otherwise it will cause poor meshing and accelerate the wear of the new chain or new sprocket. When the tooth surface of the sprocket is worn to a certain degree, it should be turned over and used in time (referring to the sprocket used with adjustable surface). To extend the use time.
5. The old bridge crane chain cannot be mixed with part of the new chain, otherwise it is easy to have an impact in the transmission and break the chain.
6. The bridge crane chain should be filled with lubricating oil in time during the work. The lubricating oil must enter the matching gap between the roller and the inner sleeve in order to improve working conditions and reduce wear.