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冶金部、一机部、农机部于1980年12月15日至19日在河北省小寺沟铜矿对三种井下内燃无轨设备和柴油机净化技术进行了鉴定。在会上通过了无轨设备、配套的牵引车及柴油机排气净化技术等五项技术成果鉴定证书。以下对这些设备分别作一简要介绍: (一) CNJ-3型内燃无轨掘进台车该台车主要用于分段崩落法进路掘进和其他无轨巷道及硐室的开挖。其特点是:钻臂采用极座标液压平动,
Ministry of Metallurgy, Ministry of Machinery, Department of Agricultural Machinery on December 15, 1980 to 19 in Xiaosheigou copper mine in Hebei Province on the three kinds of underground trackless track equipment and diesel purification technology were identified. At the meeting passed the trackless equipment, supporting the tractor and diesel exhaust purification technology five technical achievements appraisal certificate. The following are a brief introduction of each of these devices: (1) CNJ-3 diesel-mounted trackless trolley This trolley is mainly used for excavation of sub-caving method and excavation of other trackless tunnels and chambers. Its characteristics are: drill arm with polar coordinates hydraulic translation,