The testing results indicate that the hoisting time of driving device can meet the practical demands and the positioning mechanism of linear electric motor is free and reliable.
试验结果表明，驱动装置水平布置时，其提升时间满足实际要求；直线电机次级板定位机构动作灵敏可靠。
In this paper the calculating formulas of drop braking time and braking slipping distance of hoisting mechanism are deduced on the basis of analysing the braking process of hoisting mechanism.
本文在分析起升机构制动过程的基础上，推导出起升机构下降制动时间和制动下滑距离的计算公式。
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。
The connections between trash rack and hoist as well as between service gate and hoist are achieved by hoisting chain that is apt to place and is time saving without tearing down pull rod.
拦污栅与启闭机、检修闸门与启闭机的连接，采用了易于存放又避免拆卸拉杆、明显节省操作时间的起重环链。
It is pointed out that during emergency braking on shaft hoists, the built-up time of brake torque has considerable influence on the formation of dynamic tension in the hoisting ropes.
本文指出当矿井提升机紧急制动时，制动力矩的建立时间将对钢丝绳中的动张力产生相当大的影响。
There are project summary, compilation foundations, construction plan, hoisting management, safety measures, project time limit and emergency plan etc.
其中包括工程概况、编制依据、施工方案、吊装管理、安全措施、计划工期和应急预案等。
This hoisting method solves the difficulty of can not using crane for narrow site. This method reduces the limit time and acquires good economical benefit and social benefit.
本吊装方法解决了因现场狭窄汽吊无法进入的难题，又大大缩短了工期，取得了良好的经济和社会效益。
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 device is arranged on the transport cart, which saves labor and loading time when transported objects are loaded and the simple propeller lifting device is arranged.
运输车上设置起重吊装设备，在装卸运输物以及简易螺旋桨式吊运装置时，节省人力和装卸时间。
The utility model has the advantages of count precision, ration function, time delay function and counting function, and can match with a hoisting machine directly.
该计数仪计数准确，有定量延时计数功能，可直接与提升机配接。
The utility model has the advantages of count precision, ration function, time delay function and counting function, and can match with a hoisting machine directly.
该计数仪计数准确，有定量延时计数功能，可直接与提升机配接。
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