巷道堆垛起重机的下降限速装置

The Device of Limiting the Dropping Speed by Alley stackuing Crane

本文论述了下降限速装置的重要性和工作原理，并对其结构、运动和静力等方面进行分析，为用户选用提供了方法与理论依据。

The paper discusses the importance and the working principle by the device of limiting the dropping speed,and analyses the construction ,the motion and the statics by the device of limiting the dropping speed,furnishes the method and the theoretical basis for urer's selection.