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我矿文井使用的KJ2×2×1-20型提升机，是我国50～60年代生产的仿苏老产品，其结构陈旧，能耗高、维修量大、安全隐患较多。随着井筒的延深和北区工程的开拓后，它与生产之间的矛盾越来越突出，严重制约着我矿生产的发展。为此，我们在1993年底将其进行了技术改造。改造后经过4
KJ2 × 2 × 1-20 hoist used by mine mine shaft is the imitation Soviet-style old product produced in China from 1950s to 1960s. Its structure is obsolete, high energy consumption, large amount of maintenance, and many safety hazards. With the deepening of the wellbore and the opening up of the North Area Project, the contradiction between it and production has become increasingly prominent, seriously restricting the development of mine production. To this end, we carried out technological transformation at the end of 1993. After the transformation of 4