介绍一种能够在工程机械液压系统中改变两个定量马达连接方式的液控换向阀。
The author introduces a kind of hydraulically controlled direction valve to change the connecting mode between two fixed displacement motors in hydraulic systems of construction machinery.
本文分析了工程机械液压系统中叶片泵失效的原因，并提出了相应的预防措施。
This article deals with the reasons for blade-pump's failure in hydraulic circuit and puts forward corresponding counter plot.
同时本文的研究成果对其他工程机械液压系统的故障诊断也有一定的应用价值。
The research results of this paper is also propitious to the other fault diagnosis of hydraulic system of construction machinery and equipment.
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