目前我国煤矿井下使用各种类型的刮板输送机,它是采煤工作面及顺槽运输巷的主要运煤设备,但它存在着重载下难起动问题。而双速电机驱动的刮板输送机,就是一种解决起动问题有效的技术途径。我国井下各种类型输送机传动,多采用液力耦合器,要使输送机具有足够大的起动转矩,液力耦合器的特性需要与驱动电机特性匹配极佳。但由于生产条件的变化,达到理想匹配是很难办得到的技术问题,如果发生超载喷液,不仅有喷出高温热油发生采区着火不安全的隐患,而且进行再次装液或 At present, various types of scraper conveyors are used in coal mines in our country. It is the main coal transportation equipment for coal mining face and transportation lane along the trough, but it has the problem of difficult starting under heavy load. The two-speed motor-driven scraper conveyor, is a solution to the starting problem effective technical way. In our country, all kinds of conveyer drive in the mine use hydraulic coupler more, so that the conveyer has a large enough starting torque. The characteristics of the hydraulic coupler need to be matched with the characteristics of the driving motor. However, due to changes in production conditions, to achieve the ideal match is difficult to get technical problems, if overload spray, not only spray high temperature hot oil mining accident occurred in the hidden fire safety, but also re-liquid or