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塔吊是常用的施工机械,现根据有关资料和我公司实践,谈谈塔吊的几项故障和倒塔分析,供大家参考。一、故障分析(一)塔身不能回转1.回转支承缺油:(1)长期未按时加油。(2)虽然定期加油,但回转支承的密封胶垫破损,润滑油渗漏。回转支承缺油,会使滚柱、滚道生锈,两者间呈干摩擦接触,转动阻力增大,使回转支承不能转动。
Tower cranes are commonly used construction machinery. Now based on relevant information and our company’s practice, we will talk about several failures and tower collapse analysis of tower cranes for your reference. First, the failure analysis (A) the tower body can not be rotated 1. Slewing bearing lack of oil: (1) long-term refueling on time. (2) Although the fuel is regularly refueled, the seal gasket of the slewing bearing is damaged and the lubricant leaks. The lack of oil on the slewing ring will cause the rollers and raceways to rust. The two are in dry friction contact with each other, and the rotation resistance increases, making the slewing ring unable to rotate.