天轮,它是矿井提升中的关键部件,尤其在竖井提升中更为重要。长期以来,为了保护天轮和钢丝绳达到延长使用寿命和确保提升中的安全,目前一般均在天轮导向槽内采用硬木作衬垫。但在长期使用中,发现木质衬垫磨损较快,在我矿使用寿命一般约15～30天左右就需更换,不仅维修工作量大,而且影响生产。为此,我矿从1978年2月底,采用了汽车旧轮胎代替硬木做天轮衬垫材料,经实践使用证 Celestial wheel, which is a key component in mine hoisting, especially in the shaft hoisting is more important. For a long time, in order to protect the sheave and the steel wire rope to prolong the service life and ensure the safety during hoisting, at present, the hardwood is generally used as the liner in the guide pulley of the day wheel. However, in the long-term use, it is found that the wear of wooden liner is quicker, and the service life of mine is generally about 15 to 30 days and needs to be replaced, not only the workload for maintenance is large, but also the production is affected. To this end, I mine from the end of February 1978, the use of old tires instead of hardwood days to do a gasket material, the practice of using the permit