司钻摘掉辊筒离合器，刹住绞车。
The driller disengages the drum clutch and secures the drawworks.
阐述了液压支架所用立柱、千斤顶的缸筒在上深孔钻镗床进行镗孔、滚压之前必须进行的加工工艺的设计。
This paper expounds the design of processing techniques before hole-boring on the cylinder of upright post and hoisting jack used in the hydraulic support.
特点包括自动净化筒式过滤器、用于排尘的液压螺旋钻和拖车。
Features include self cleaning cartridge style filters, hydraulic auger for dust discharge, all on a heavy duty street legal trailer.
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