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五十年代末和六十年代初期,国外金属矿山的地下开采,普遍采用气腿凿岩机、耙矿机和各种有轨设备。一般来说,这些设备的共同缺点是:通用性、机动性差,功率、效率和利用率低。针对以上情况,为了实行集中采矿,不断提高矿山产量和劳动生产率,各国相继研制了各种无轨自行设备。特别是近几年,采装运设备不断改进,液压凿岩台车和柴油驱动的装运卸机(铲运机或装运机)迅速推广,天井钻机日趋完善,从而出现了一些新的“三无”
In the late 1950s and early 1960s, the underground mining of metal mines abroad generally adopted air-leg rock drills, rake miner machines and various rail equipment. In general, the common shortcomings of these devices are: versatility, poor maneuverability, low power, efficiency and utilization. In response to the above, in order to implement centralized mining and continuously improve the output of mines and labor productivity, various countries have successively developed a variety of trolley-less equipment. Especially in recent years, mining equipment has been continuously improved. Hydraulic rock drilling rigs and diesel-powered loading and discharging machines (scrapers or loaders) have been rapidly popularized. As a result, drilling rigs for the wells are becoming more and more sophisticated. As a result, some new “three-no”