The hydraulic system breakdown appears is various. The breakdown reason also is the many kinds of factors synthesis.
液压系统的故障出现是各种各样的，故障原因也是多种因素的综合。
The pressure safety devices can help to retain the draw bar pulling force in the event of a breakdown of the hydraulic system.
安全阀可以防止因液压系统故障等原因而引起的油缸输出推（拉）力急骤下降，可确保加工安全。
The breakdown arised in run of hydraulic braking system of mine hoist in Xinqiao PyriteMine was presented, and the produced reasons were analyzed and the treated method was put forward.
介绍新桥硫铁矿矿井提升机液压制动系统运行过程中出现的故障，分析产生的原因并提出了处理方法。
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