The new hydraulic hoisting jack is a construction equipment with our own knowledge property, which is used to install large-sized electrical equipment.
新型液压起重器是具有我国自主知识产权的安装大型电力设备的施工设备。
Rack hoisting jack: Uses the rack to go against as the rigidity lifts a hoisting jack.
齿条千斤顶：采用齿条作为刚性顶举件的千斤顶。
Screw jack: Uses the screw rod or the fluctuation sleeve which impels by the screw rod goes against as the rigidity lifts a hoisting jack.
螺旋千斤顶：采用螺杆或由螺杆推动的升降套筒作为刚性顶举件的千斤顶。
Relaxes the brake, the heavy item then voluntarily fast drops, reduces the return trip time, but this kind of hoisting jack structure is complex.
放松制动器，重物即可自行快速下降，缩短返程时间，但这种千斤顶构造较复杂。
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.
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。
Traditional method for overhaul of the top of miter gate is through manual operation by hydraulic hoisting jack which has the shortcomings of low efficiency and great risk.
摘要船闸人字门顶门检修的传统方法是采用液压千斤顶手动作业，工作效率低，时间长，技术风险大。
A hoisting jack is a key component for a rocket launcher vehicle, influencing the combat performance. It is required to support the combat vehicle reliably within the prescribed time.
火箭炮车千斤顶是一个影响战术技术性能的关键件，要求它在规定的时间内可靠地支撑起炮车。
A hoisting jack is a key component for a rocket launcher vehicle, influencing the combat performance. It is required to support the combat vehicle reliably within the prescribed time.
火箭炮车千斤顶是一个影响战术技术性能的关键件，要求它在规定的时间内可靠地支撑起炮车。
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