范文编号:JX239 所有图纸。范文字数:37286.页数:103 摘 要
ABSTRACT Stand cover of the last century as the early 1970s emerging products, the notable features of the top beam between the terminal and the base of attaching a shield. Cover is generally inclined beams, the hinged roof beams and between the base. Kinematics from the speakers, it is stable, which is the optimal shield in the box-stent and the stent Crib 1:00, Leung also cover is closed goaf, so as to prevent the rock into the broken roof support Face. Therefore, in general, cover Stand Face the support of the cleaner. Keywords : hydraulic support, ZY3200, shield, structural design, mechanical mining
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