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在京广复线大瑶山隧道工程中,从瑞典阿特拉斯一柯普柯公司引进了Promec TH286型四臂液压凿岩台车,为满足台车上Cop1038 HD重型液压凿岩机钎头的需要,我们武汉地质学院钎头科研组和铁道部隧道局科研所受托,与中南矿冶学院粉冶厂、成都探矿机械厂、广济长江工具厂、贵阳钢厂等单位合作,研制成功了φ50毫米十字(Ⅰ)、(Ⅱ)型和弹头九齿波形螺纹焊接钎头,节省了大量外汇。
In the project of Dayaoshan Tunnel in Beijing-Guangduan Line, Promec TH286 four-arm hydraulic drilling rig was introduced from Atlas Copco in Sweden. In order to meet the need of Cop1038 HD heavy-duty hydraulic rock drill head on the trolley, We Wuhan Institute of Geology brazing head research group and the Ministry of Railways Tunnel Bureau of scientific research institutes entrusted with the South China Institute of Mining and Metallurgy Powder Plant, Chengdu prospecting Machinery Plant, Guangji Yangtze River Tool Works, Guiyang Steel and other units, the successful development of the φ50 mm cross (Ⅰ), (Ⅱ) type and warhead nine tooth wave thread welding bit, saving a lot of foreign exchange.