根据一九七七年八月三部在北京召开的凿岩台车系列设计工作座谈会议精神和三部联合签发的(77)煤基局字第053号、(77)冶科矿字第021号、(77)矿技联字第179号文件要求,三部凿岩台车系列联合设计工作于一九七七年十月二十日至十一月二十四日在长沙中南矿冶学院和长沙矿山研究院进行。参加这次联合设计的有十 According to the symposium on the design of the drilling rig series held in Beijing in August 1977 and the three jointly issued (77) Coal Bureau No. 053, (77) Metallurgical Mine Word No. 021 (77) MINSHUI Document No. 179 requires that the joint design work of the three drilling rig series be carried out at the Zhongnan Mining and Metallurgical Institute of Changsha from October 20 to November 24, And Changsha Institute of Mining conducted. There are ten to participate in this joint design