矿山中每年每月所使用木材量是相当多的,由于用处的不同,必须加工成各种不同形状。有的需要制成木板作为打天井挂立板用;有的需要钻孔作为竖井吊框支柱用;有的需要刨成光面,这样就需要多种工具进行加工,在大量需要的情况下用人工操作是不能满足要求的。如果都用电动机带动则需增添很多设备,又要占去厂房很多面积。在这情况下我矿工人陈 The amount of wood used in the mines each month is quite large and must be worked in a variety of shapes due to the different uses. Some need to be made of wooden boards used as a hanging wall hanging plate; some need to drill as shaft hanging pillar; some need to planed smooth, so you need a variety of tools for processing, in a large number of needs Manual operation can not meet the requirements. If you are using a motor driven need to add a lot of equipment, but also take up a lot of area of ​​the plant. In this case, miners Chen