某重型起重机支腿锁故障诊断与改进  

The Fault Analysis and Improvement for a Crane Outrigger Lock

作　　者：唐海军 卢桂琴[2] 

机构地区：[1]三一汽车起重机械有限公司研究院,湖南长沙410600 [2]江西科技学院工程中心,江西南昌330098

出　　处：《液压与气动》2015年第1期131-133,共3页Chinese Hydraulics & Pneumatics

摘　　要：针对某重型起重机支腿锁的故障进行了测试与分析。测试结果表明,导致支腿油缸漏油以及油缸导向套密封件被损坏的主要原因是现有的支腿锁内部结构在某些工况下,会使支腿油缸的有杆腔产生高压甚至超高压。通过改进支腿锁内部的阀芯结构或者进出油阻尼孔径,可以有效地卸掉支腿油缸有杆腔的高压,进而有效地保护支腿油缸。The fault cause of the outrigger lock on the crane is analyzed. Through test and calculation, we find that the fault cause of the outrigger lock is the high pressure in the outrigger oil cylinder chamber with rod. By impro- ving the structure or the orifice diameter of the hydraulic lock spool, we can control the amplitude of the pressure shock effectively, which can protect the oil cylinder from being damaged

关 键 词：支腿锁 油缸 故障诊断 改进 

分 类 号：TH137[机械工程—机械制造及自动化] TH218