采煤机大倾角综采工作面制动系统的改进

On Improvement of shearer braking system in large dip angle working face

通过分析在大倾角工作面上运行的采煤机的下滑原因,提出对采煤机的制动系统的改进措施.设计了四象限变频调速采煤机电气控制系统.通过在制动系统中增加压力开关来检测制动器的状态,并将开关信号接入控制系统,使控制系统可根据开关信号对电气系统进行控制.解决了电气控制系统和制动系统时序配合问题,实现机械、电气、液压系统的有效配合,有效解决了采煤机停车下滑和启动下滑现象.

Through the analysis of shearer running due to the decline in the large dip angle working face,this paper puts forward the improvement measures for the braking system of the shearer. The shearer designs the four- quadrant inverter electrical control systems. By increasing the pressure switch in the brake system to detect the brake condition,and the switch signal access control system,the control system can be controlled according to the electrical system of switch signal. This research can help to solve the problem of timing with the electrical control system and brake system,realize the effective coordination of mechanical,electrical and hydraulic system,effectively settle down the coal mining machine parking decline and start declining phenomena.