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独联体煤矿开发技术王淑琴译１巷道掘进和维修装置莫斯科近郊煤炭科学研究所研制出一种巷道掘进和维修装置（苏联发明证书１３７０２５１）。安设在巷道内的掘进和维修装置侧视图如图１所示。超前支架侧视图如图２所示。前支承框架向煤壁的移动过程如图３所示。图１安设在...
Commonwealth of coal mine development technology Wang Shuqin translation 1 roadway tunneling and maintenance device Coal Institute of Moscow suburbs has developed a roadway tunneling and maintenance device (the Soviet Union invention certificate 1370251). A side view of the tunneling and servicing equipment installed in the roadway is shown in Figure 1. The front bracket side view is shown in Figure 2. The movement of the front support frame to the coal wall is shown in Figure 3. Figure 1 installed in ...