【摘要】 本文指出设计新型液压升柱器的重要性和经济意义。论述了升柱器升力大小对采煤工作面顶板管理和安全生产的影响。并着重探讨了几种获得大升力、重量轻和动作迅速的升柱器设计方案。更多还原

【Abstract】 In this article, the importance and economical meaning that a new type of Hydraulic prop Lifter is designed are shown; the influence of the magnitude of lifting force produced by the Prop lifter on the coal face strata control and safety in production are explained; and some various plans for the prop lifter are introduced, for which in additon to have a lighter weight they can also be moved rapidly and produce greater lifting force更多还原