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一、前言 在倾角较大的缓倾斜煤层和倾斜煤层中使用采煤机时,采煤机有一个不小的下滑分力,其牵引链的拉力也相应增大。因而当采煤机沿工作面上行割煤时,牵引链断链次数也就增多了,煤层倾角较大时常常会由于牵引链被拉断而发生采煤机跑车事故,严重地危及工人和设备的安全。因此,煤炭工业部颁发的《煤矿安全规程》第六十七条规定了工作面倾角在16度以上时,采煤机必须有可靠
I. INTRODUCTION When using shearer in gently inclined and dip coal seams with large inclination, the shearer has a small component of gliding force and the tension of the traction chain also increases correspondingly. Therefore, when the shearer goes up coal along the working face, the number of chain breaking in the traction chain also increases. When the coal seam inclination is large, it often happens that the mining machine sports car accident occurs because the traction chain is pulled off, seriously endangering workers and equipment Security. Therefore, Article 67 of Coal Mine Safety Regulations promulgated by the Ministry of Coal Industry stipulates that shearer must be reliable when working face inclination is above 16 degrees