Guide vane operation structure includes the guide vane arm clip board, guide vane arm, segmental keys, connection board, handle, cut pin, connecting rod pin and gland, etc.

导叶操作机构主要包括：导叶臂压板、导叶臂、分瓣键、连接板、耳柄、剪断销、连杆销及压盖等。

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When the driver bit of the screw rod needs to be replaced, as long as the clip ring is gently pulled downward. The screw rod is turned and the clip ring is released.

需要更换螺丝杆刀头时，只要轻轻向后拉动卡环，调转螺丝杆再放开卡环即可。

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