When the screw is rotated, the convex pole of the screw suppresses the chain articulated pin of the chain and shoves the articulated pin to dismantle the chain.
转动螺杆，螺杆的凸柱压住链条的链条活节销，可以将链条活节销挤出，拆卸链条。
This paper introduces how to dismantle yarding tractor loading board, install trestle pole and use tightwire and chain wheel to load and unload cargo.
本文介绍如何拆下集材拖拉机搭载板，安装架杆，利用绞盘机、钢索及架杆滑轮装卸货物。
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