采煤机作业时摇臂齿轮箱故障分析及诊断技术研究

Research on fault analysis and diagnosis technology of rocker gear box during shearer operation

以7LS06型采煤机摇臂齿轮箱为对象,在对齿轮箱主要结构进行介绍的基础上,分析了齿轮箱常见的故障问题,其中齿轮和轴承的故障问题最为显著。对齿轮和轴承工作时的振动机理及其常见故障类型进行了详细的介绍。引起齿轮和轴承振动的原因包含2方面:(1)结构件的工作原理决定;(2)结构件表面存在故障缺陷,从而改变结构原有的振动状态。可以对齿轮和轴承的振动信号进行分析,从而判断其是否存在缺陷故障。利用振动测试平台对摇臂齿轮箱的振动状态进行实际测验,并将测验结果与实际结果对比,验证了故障诊断技术的科学性与合理性。

Taking the 7LS06 shearer rocker gear box, based on the introduction of the main structure of the gearbox, the common fault problems of the gearbox are analyzed, among which the fault problems of gears and bearings are the most significant.The vibration mechanism and common fault types of gears and bearings are introduced in detail.There are two reasons for the vibration of gears and bearings.The first is the working principle of the structural parts, and the second is that there are faults on the surface of the structural parts, which change the original vibration state of the structure.The vibration signals of gears and bearings can be analyzed to determine whether there are defects or faults.The vibration state of the rocker gearbox is actually tested by the vibration test platform, and the test results are compared with the actual results, which verifies the scientificity and rationality of the fault diagnosis technology.