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汽车起重机支腿垂直液压缸必须安装液压锁,以防止其作业时发生“软腿”现象。文章通过对汽车起重机双向液压锁和单向液压锁两种支腿液压回路的分析,论证了支腿缸内泄可引起单向液压锁支腿缸出现“软腿”问题,得出了采用双向液压锁更为安全可靠的结论。
Truck crane legs Hydraulic vertical cylinders must be equipped with hydraulic locks to prevent “soft legs” during their work. The article analyzes the hydraulic circuit of two outriggers of two-way hydraulic lock and one-way hydraulic lock of truck crane, and proves that the problem of “soft leg” Hydraulic lock more secure and reliable conclusion.