采煤机传动系统油液使用状态及其对应磨屑形态分析  

Grade for Lubricating Oil of Mining Shearer Drive System and Its Wear Particles

作　　者：刘洪涛[1] LIU Hongtao(School of Materials Science and Physics,China University of Mining&Technology,Xuzhou Jiangsu 221116,China)

机构地区：[1]中国矿业大学材料与物理学院,江苏徐州221116

出　　处：《润滑与密封》2022年第11期155-159,共5页Lubrication Engineering

基　　金：江苏省重点研发计划(社会发展)项目(BE2020643)。

摘　　要：采煤机油液的在线监测可检测其传动系统运行状态,成为采煤机状态监测的一个新的研究方向。首次根据工业闭式齿轮油换油标准划分润滑油污染阶段,并对采煤机油液中的磨损颗粒形态进行研究。研究表明:可将采煤机传动系统润滑油的使用寿命划分为6个阶段:未使用期,轻度污染期,次轻度污染期,次重度污染期,重度污染期,报废期。对未经使用的采煤机油液中颗粒形态进行了研究,发现即使未使用的润滑油中也存在颗粒,颗粒粒度在5μm以下,将对润滑油评判标准产生影响。指出在进行采煤机传动系统油液磨屑监测参数设定时,要注意几个磨屑粒径节点:30,50和70μm;当油液中磨屑粒度小于30μm时,采煤机处于正常运转阶段;当油液中磨屑粒度大部分位于30~50μm时,采煤机处于正常运转阶段,但需注意补充一定量新润滑油;当油液中出现50~70μm的磨屑时,可考虑进行润滑油的更换和传动系统检修;当油液中出现大于70μm的磨屑时,可开展传动系统大修。The on-line monitoring of mining shearer oil can detect the running state of its transmission system.The pollution stage of lubricating oil was divided according to the oil change standard of industrial closed gear oil for the first time, and the wear particle morphology in coal mining oil was studied.The research shows that the service life of the lubricating oil in the shearer transmission system can be divided into 6 stages: unused period, lightly polluted period, sub lightly polluted period, sub heavily polluted period, heavily polluted period and scrapped period.The particle morphology of unused coal mining oil was studied.It is found that there are particles even in unused lubricating oil, and the particle size is below 5 μm, it will affect the evaluation standard of lubricating oil.When setting the monitoring parameters of the oil wear debris of the shearer transmission system, several wear debris particle size nodes, 30 μm, 50 μm and 70 μm, should be paid attention.When the abrasive particle size in the oil is less than 30 μm, the shearer is in normal operation stage of shearer.When the particle size of wear debris in the oil is mostly 30 μm to 50 μm, the shearer is in normal operation stage, but a certain amount of new lubricating oil shall be added.When wear debris from 50 μm to 70 μm appears in the oil, the lubricating oil can be replaced and the transmission system can be overhauled.When the particle size of wear debris is more than 70 μm, the transmission system can be overhauled.

关 键 词：采煤机 传动系统 油液 磨屑 黏度 

分 类 号：TE666[石油与天然气工程—油气加工工程]