关于复线式的升降机，要用大绳去牵引钢丝绳，绳头绑缚一定要安全可靠。
Lift on double type, to use the rope to traction wire rope, the rope tied to the safe and reliable.
装于帆桁中央两侧的索具：能滑动的绳圈或链子，用来把帆桁或缆索拴在船桅上，使之仍可以随意升降。
A sliding loop of rope or chain by which a running yard or gaff is connected to, while still being able to move vertically along, the mast.
作业人员进入液压升降机后应关闭护栏门，插上插销，系上安全绳，载荷的中心应尽量处于工作台面的中心位置。
Close the door guardrail workers into the elevator guide rail, plug, attached to a safety rope, the load center should as far as possible in the center position of the working table.
当升降机使用一个月后，绳夹的螺栓都要重新拧紧。
After being used for over 1 month, all the screws must be twisted firmly.
当升降机使用一个月后，绳夹的螺栓都要重新拧紧。
After being used for over 1 month, all the screws must be twisted firmly.
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