采煤机用园环链作为牵引工具是1954年出现的.此后对链条的设计与制造技术都有极大的发展,到目前这种牵引方式已为各国普遍采用.但是,园环链牵引效率低,而且经常发生跳链断链事故,很不安全.尤其是近年来,采煤机向大功率发展,一个工作面使用几台采煤机同时作业,园环链牵引方式的缺点就更突出了. Shearer chain with garden as a traction tool was appeared in 1954. Since then the chain of design and manufacturing technology have great development, so far this traction has been widely adopted in various countries.But the chain chain traction efficiency Low, and often happen chain hopping chain accident, it is not safe.In particular, in recent years, the shearer to high-power development, a working face using several shearer at the same time operation, the shortcomings of garden chain traction more prominent It’s