大型挖掘机施工时土方作业量较大,行走不频繁,其长距离转移工作地点时,一般采用拖车运输。而小型挖掘机施工时土方作业量小,经常需长距离自行转移到工作地点。由于小型挖掘机频繁、长距离行走,常造成其支重轮轮轴早期磨损。1.损坏原因小型履带式挖掘机支重轮主要由轮体、轮轴、铜套、浮封环、O形圈和端盖等组成。造成支重轮轮轴早期磨损的原因有以下5种:一是频繁、长距 Earth excavation large excavator large amount of construction work, walking is not frequent, the long-distance transfer of work sites, the general use of trailer transport. The small excavator earthwork small amount of construction, often long-distance self-transfer to the workplace. Frequent, long-distance walking of small diggers often causes early wear on the wheel hubs. 1. Causes of damage Small Tracked Excavator Track Roller mainly by the wheel, axle, copper sleeve, floating ring, O-ring and end caps and other components. The reason for the early wear and tear of the wheel hub caused by the following five kinds: First, frequent, long-distance