【摘要】 本文对机械弹簧冲击式落刀装置的落刀过程进行了高速摄影分析,并与单销爆炸式落刀装置的运动特性进行了比较,说明机械弹簧冲击式落刀装置的落刀运动特性优于单销爆炸式的。作者为此进一步对落刀过程进行动力学分析,建立了落刀装置的普遍模型。理论分析证明高速摄影的实验结果是正确的。落刀装置的普遍模型指出,决定落刀装置性能优劣的主要因素是产生落刀作用的冲击块冲击速度(当冲击块质量一定),而不取决于产生落刀动作是爆炸式的还是机械方式。这一分析为落刀装置的设计提供了理论依据。更多还原

【Abstract】 In this paper, by using high speed photogtaphing technique an analysis onthe quick--stop--action process of a spring--driven impact QSD (Quick Stop Device)is conducted, and the results are compared with that of an explosive one withsingle shear pin. It is found from the comparison that the former is superiorto the later in characteristic of movement. Also in the paper, a dynamic analy-sis of stoping process of QSD is dealt with and a general model for all typesQSD is presented. It is proved that the experimental result is in accord withthat of the theoretical analysis. The general model for the QSD shows the cha-racteristic of a QSD is mainly determined by the velocity of impact mass (forconstant impact mass)and not by the way in which the quick stop action of QSDis caused (e.g. by mechanical means or the explosive). The study provides sometheoretical considerations for designing new QSD.更多还原