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汽车起重机是重要的运输生产设备,其液压系统构造复杂、工艺严密、配套部件多、泵阀配合紧密,要求精度高,目前,液压系统出现故障后,是通过总成解体、分项检测或目测的方式对故障部位进行检测和判断,判断困难、烦琐、工作量大;故障部件修竣后,必须先组装,之后进行吊重实验或现场作业试车,如技术指标达不到要求必须再次进行分拆检修,排除故障,重新组装试车,延长了修理周期、增加了工作量和维修费用,同时,不符合标准的部件装车进行作业检测易发生事故。因此,在同一系统中实现修前对液压总成故障诊断、修后对总成部件检测至关重要,能提高汽车起重机液压系统修理质量、缩短修理周期、提高一次装车合格率、减少工作难度和强度、降低维修成本,为汽车起重机液压系统检测维修提供一条捷径。
Truck crane is an important transportation production equipment. Its hydraulic system has the features of complicated structure, tight technology, many supporting components, close cooperation of valve and valve and high requirement of precision. At present, after the hydraulic system breaks down, the hydraulic system is disassembled, subassembled or visualized The way to detect and determine the fault location, to determine the difficulties, cumbersome, heavy workload; fault components after the completion of the reassembly, you must first assembled, then hanging test or field operation test, if the technical indicators do not meet the requirements must be re-points Demolition overhaul, troubleshooting, reassembly test, extended repair cycle, an increase of workload and maintenance costs, at the same time, does not meet the standard parts loading for job inspection prone to accidents. Therefore, in the same system before the repair of the hydraulic assembly fault diagnosis, repair assembly parts after testing is essential to improve the quality of the hydraulic crane repair system, shorten the repair cycle, improve the passing rate of a loading, reducing the difficulty of work And strength, reduce maintenance costs for the hydraulic crane truck inspection and maintenance to provide a shortcut.