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兴安煤矿副井绞车使用的是原苏联生产的四连杆平移式抱闸制动系统,至2009年已经服役了53年,由于制动性能不好,不能达到《煤矿安全规
The auxiliary shaft winch of Xing’an Coal Mine uses the four-bar translational brake brake system produced by the former Soviet Union and has been in service for 53 years in 2009. As the braking performance is not good, it can not reach the "Coal Mine Safety Regulations