液力推杆机械闭锁安全门淄博矿务局南定煤矿王孚泰淄博矿务局南定煤矿是１９８９年投产的新矿井，因副井井筒淋水大（约０．４ｍ３／ｍｉｎ），井下码头门无法使用电气设备、因而用电气设施控制的安全门一直无法使用。我们自行设计制作安装了液力推杆滑道式机械闭锁安全门... Hydraulic push rod mechanical lockout safety gate Zibo Mining Bureau Nanding coal mine Wang Futai Zibo Mining Bureau Nanding coal mine was put into operation in 1989, a new mine, because the auxiliary shaft well watering (about 0.4m3 / min), underground pier door can not Using electrical equipment, safety doors controlled by the electrical installation are not available. We design and install the hydraulic push rod slides mechanical lock security door ...