采煤机机身智能化连接系统研究与应用

Research and application of intelligent connection system for the coal shearer

采煤机是综采设备中的重要组成部分,采煤机机身通常由螺栓连接固定,螺栓的松动情况对采煤机的稳定可靠运行有着关键作用,通常由人工定时对螺栓检测以及紧固。采煤机机身智能化连接系统采用传感器得到螺栓微变形情况,并通过数据中心分析得到螺栓轴向受力情况。在实际应用中,采煤机机身智能化连接系统能够检测螺栓轴向受力,单个螺栓轴向受力稳定,浮动范围在10%以内,螺栓能够满足采煤机机身紧固连接要求。当螺栓出现轴向受力突变时,能够根据设定阈值,及时按照不同等级发出警报提示,工作人员能够据此做出判断并维护。该系统能够实时检测、记录、分析、预警螺栓受力情况,减少人工检测,对采煤机的持续运行提供保证。

The shearer is a critical component in the fully-mechanized coal mining equipment.Typically,the body of the shearer is fixed by bolt connections,and the condition of bolt loosening plays a pivotal role in ensuring the stable and reliable operation of the shearer,usually by the manual regular inspection and tightening of the bolts.The intelligent connection system of coal mining machine body uses sensors to get the bolt micro-deformation,and the axial force of the bolt is obtained through data center analysis.In practical application,the intelligent connection system of the Coal Shearer can detect the axial force of bolts,and the axial force of individual bolts is stable,with a floating range of 10%or less,and the bolts are able to meet the requirements for fastening connection.When the bolt has a sudden change of axial force,according to the set threshold value,it can timely send out alarm prompts according to different levels,so that the staff can make judgement and maintenance accordingly.The system is able to detect,record,analyze and warn the bolt stress situation in real time,reduce manual inspection,and provide guarantee for the continuous operation of the coal mining machine.