某金属矿山混合井装备的提升机型号为JKD4×4多绳摩擦式提升机,该机主要担负着提升矿石、下放材料和作业人员之用,提升设备为25t双层罐笼和18t底卸式箕斗。操作人员在使用过程中,发现卷筒运转出现不正常的声响,且轴承部位温升过高。经研究分析,发觉中间轴承和端部轴承磨损严重, A metal mine mixed well hoist equipped with hoist model JKD4 × 4 multi-rope friction hoist, the aircraft mainly responsible for upgrading the ore, decentralized materials and the use of workers, to enhance the equipment for the 25t double cage and 18t bottom unloading Skip. During operation, the operator noticed abnormal sound of drum operation and too high temperature rise of bearing parts. After research and analysis, found that the middle bearing and end bearing wear serious,