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1981年,国家召集相关设计与生产人员组成联合调查组,对全国40个主要矿务局的70多个煤矿进行调查,在此基础上,于1984年设计出JK/A型矿井提升机,并于1985年开始批量投入生产。JK/E型矿井提升机是在JK/A型提升机基础上进行整改,于1991年投入生产。目前,这两种系列的提升机大都已经服役20多年,其中个别提升机的卷筒筒壳及两半卷筒联接板出现开裂,对正常生产造成影响,甚至发生事故。为预防此类现象的发生,有必要对筒壳开裂的原因进行分析探讨,避免事故的发生。
In 1981, the state convened relevant design and production personnel to form a joint investigation team to investigate more than 70 coal mines in 40 major mining bureaus throughout the country. On this basis, a JK / A mine hoist was designed in 1984 In 1985 began mass production. JK / E mine hoist is based on the JK / A hoist rectification, put into production in 1991. At present, most of the elevators of both series have been in service for over 20 years. Cracking occurs on the drum shell and the two half-roller coupling plates of individual hoist machines, affecting normal production and even accidents. In order to prevent the occurrence of such phenomena, it is necessary to analyze the causes of cracking of the shell to avoid accidents.