Frequent bucket elevator chain plate fracture treatment

Bucket elevator chain plate fracture frequently deal with 2020 - 11 - 08 ChanShaoRen wei-hua song {sang pu} lei Du Lian qinchuan ( Anyang China united cement co. , LTD. ) A company of 5000 t/d NSP cement production line of cement mill roller machine cycle bucket elevator ( Model NSE1000x45000) 。 The line in January of 2011 and put into production, the use of bucket elevator is working well within three years, once a chain rupture accident in early 2014, after the replacement of broken chain plate, began to frequent chain plate fracture failure, when stop check every day have a 1 to 4 pieces of any number of chain plate fracture. Beginning of chain plate fracture, think the bucket used for 3 years, there may be a fatigue fracture phenomenon, combined with roller press cycle load is not stable, especially when roller press flat warehouse and material chain plate fracture caused by excessive load on the moment together. For chain plate fracture, adopted the lap plates welded reinforcement, as far as possible to extend the time of use. Then the chain plate fracture is more and more serious, first break every day 1 to 2 pieces, then to 3 to 4 blocks and hopper deformation craze, had to stop to check regularly every day, the processing chain and hopper, greatly increases the maintenance workload. A period of time, the chain plate fracture is the main factors affect normal operation of the cement mill. Chain plate and hopper check processing is at the bottom of the elevator, above ground, manhole, a bucket, found when processing hopper height difference of 100 mm on both sides of the chain, then arrange check up on the chakra level and wear. Demolition of ascension pattern in hood, check the wheel is normal, as found on the two chains and wheel tooth mesh are not synchronized, two wrong a tooth chain. Chain and sprocket gear fault before and after a tooth, chain and a pitch of 125 mm, cause the hopper forcefully twist deformation before and after about 125 mm, distortion between the hopper and chain to produce additional force, this additional force is the real cause of the chain rupture, hopper deformation and cracking. Then adjust hoist chain synchronization, hopper basic level, the chain as shown in figure 1, 2, before and after adjustment. Figure 1 chain hopper lean figure 2 before the adjustment adjustment after the hopper level chain hoist chain synchronization, using basic didn't happen again within one year of chain plate fracture, hopper deformation and cracking phenomenon, indicating the cause analysis and treatment measures are correct. Source: 'cement project' 01, 2017