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矿山挖掘机油脂润滑系统用于其行走装置的润滑,分为单线和双线润滑系统。其中斗容量12m~3以下挖掘机一般选用单线润滑系统,斗容量12m~3以上挖掘机均为双线润滑系统。本文以大型电动挖掘机双线油脂润滑系统为例,对其工作原理及常见故障排查方法进行简要阐述。1.油脂润滑系统原理大型电动挖掘机双线油脂润滑系统主要由气动补油泵、气动泵、Y型过滤器、二位四通换向阀、油脂分配器、油箱以及管路等组成,如附图所示。双线油脂润滑系统工作原理如下:
Mine excavator grease lubrication system for the lubrication of its walking equipment, divided into single-and double-line lubrication system. The bucket capacity of 12m ~ 3 excavators generally use single-line lubrication system, bucket capacity of 12m ~ 3 excavators are double-line lubrication system. In this paper, a large electric excavator dual-line grease lubrication system, for example, its working principle and common troubleshooting methods are briefly described. 1. Grease lubrication system principle Large electric excavator double-line grease lubrication system mainly consists of pneumatic charge pump, pneumatic pump, Y-type filter, two four-way valve, grease distributor, fuel tank and piping and other components, as attached Figure shows. Dual-line grease lubrication system works as follows: