论文部分内容阅读
1.故障现象1台美国生产的格鲁夫GMK5220型全地面起重机,操作者操纵其控制器(ECOS)悬挂系统的自动找平开关时,悬挂系统只能起、落而无法自动找平,且控制器显示屏没有显示任何故障代码。2.原因分析分析认为,引起悬挂系统自动找平失效的原因主要有以下4点:一是悬挂选择阀卡滞,二是控制悬挂起升的电磁阀卡滞或未工作,三是控制自动找平的保险丝烧断,四是8个高低接近开关中某个接近开关出现故障,五是悬挂系统线路有问题。
1. Symptom 1 US-made Grove GMK5220 all-terrain crane, the operator controls its controller (ECOS) suspension system automatically leveling switch, the suspension system can only start and fall can not automatically leveling, and the controller The display does not show any fault codes. Analysis of the reasons that cause the suspension system automatically leveling failure mainly due to the following four points: First, suspension selection valve stuck, the second is to control the hanging lifting solenoid valve stuck or not working, the third is to control the automatic leveling Fuse blown, four is close to 8 switches in the proximity of a switch failure, the fifth is the suspension system line problems.