为了使弹性套柱销联轴器既保留缓冲减振功能，又具有安全保护的作用，设计了带安全销的弹性套柱销。
In order to provide with the functions of absorbing vibration and safety over loading, a new structure of elastic sleeve pin coupling with safety pin has been designed.
导叶安全保护装置主要包括：破坏性结构，剪断销、拉断销；
The guide vane safety device include three kinds of structures, the destructive structure concerning shear pin and snap pin;
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