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中铝广西分公司电解铝厂的12台多功能天车均采用Paker公司生产的轴向柱塞复合泵:PV032+PAV6.3,PV032泵负责打壳机构、换阳极机构的液压动作;PAV6.3泵负责工具小车的旋转动作。在多年的运行中,相继出现了一个同类型的故障,严重影响了整个天车的液压动作,造成多功能天车无法进行打壳、换阳极作业。 一、故障分析 1.故障现象及特征。该泵在正常工况下运行时,会出现PV032泵相关液压管路上突然失压现象,即系统压力全部为零。但油泵电机运转正常,而PAV6.3泵仍能正常工作,其控制的液压动作也能正常
Chinalco Guangxi Branch of electrolytic aluminum plant 12 multi-purpose crane are used Paker's axial piston pump: PV032 + PAV6.3, PV032 pump is responsible for the shell mechanism for the hydraulic action of the anode mechanism; PAV6. 3 pump is responsible for the rotation of the tool car. In many years of operation, one after another appeared in the same type of fault, seriously affected the entire crane hydraulic action, resulting in multi-functional crane can not shell, change anodes. First, the failure analysis 1. Symptoms and characteristics. When the pump is operating under normal conditions, a sudden loss of pressure on the PV032 pump-related hydraulic circuit may occur, ie, the system pressure is all zero. However, the pump motor is running normally, but the PAV6.3 pump can still work normally, and its controlled hydraulic action can be normal