The ejector plate assembly's movement effectively withdraws the central mandrel from the collapsible sleeve, thereby causing it to contract in diameter.
顶出板组件的运动有力地把实体新棒从环形套管拉出，因此使环形套管在直径上收缩。
2
The installation tool maintains sleeve position in the hole while pulling the mandrel into, and expanding the sleeve until the mandrel breaks off at a predetermined point.
安装工具将套筒定位在孔内，同时向往外拉心轴，套筒受力膨胀，心轴在预定受力点被拉断。
3
The base consists of a chassis and a mandrel, the mandrel which is matched with the positioning sleeve is installed on the center of the reticular chassis.