H55 全液压挖掘机高温故障诊断

Failure Diagnosis of H55 Full Hydraulic Excavator with High Working Temperature

针对Ｈ５５型挖掘机在高达６０℃左右的环境温度下进行挖炉渣作业时出现的１２０℃的高温故障，对原机型油路系统的设计进行了分析及发热计算，并在此基础上提出了排除油温过高的有效措施。

To counter the failure of H55 excavator working at the temperature of 60℃,this paper analyses the design and heat calculation of the hydraulic system, presents the measures to solve the problem of hot oil.