AM—500型双滚筒采煤机总功率为2×375千瓦(共1000马力),采高可达4.2米,能采坚硬煤层。经大同矿务局四老沟矿使用表明,机械传动除因摇臂轴承损坏引起惰轮断齿外,行星机构使用情况良好。本文在测试验收的基础上对该机截割部行星机构的传动原理与主要参数,材质热处理,强度验算,精度与基准齿形及结构特点作一分析介绍。 AM-500 double drum shearer has a total power of 2 × 375 kW (a total of 1,000 horsepower), mining up to 4.2 meters, can be hard coal mining. The use of the Datong Mining Administration’s Siouogou Mine shows that the mechanical transmission used well in the planetary gear except for the idler gear broken due to the rocker arm bearing damage. Based on the test and acceptance, this paper introduces the transmission principle and main parameters, material heat treatment, strength checking, accuracy and reference tooth profile and structural characteristics of the planet gear mechanism of the cutting machine.