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速度锁定器作为一种能量传递装置,它不同于液体粘滞阻尼器,不能耗散能量;但也有普通耗能阻尼器一样的功能,在温度、徐变等慢速作用下可以自由运动。但当速度超过其控制值时,液体速度锁定装置能迅速、有效地激活质量块间的连接,像刚性连杆一样工作;事件结束后,它又能恢复到初始作用力输出状态。基于某型速度锁定器,阐述了其基本工作原理,对缸体、活塞杆等主要结构部件进行了强度核算,并开展了不同温度下慢速、快速、模拟动力相关性能试验。结果表明:该速度锁定器结构形式合理,强度达到设计要求,具有较好的锁定功能。文中所采用的设计与试验方法正确,可行性高,通用性好,对于同类产品有指导意义。
As a kind of energy transfer device, speed lock is different from liquid viscous damper and can not dissipate energy. However, it also has the same functions as ordinary energy-dissipating dampers and can move freely under the slow action of temperature and creep. However, when the speed exceeds its control value, the liquid speed lock quickly and effectively activates the connection between the masses, working as a rigid link; after the event, it returns to the initial force output. Based on a type of speed locker, the basic principle of the speed locker is elaborated. The main structural components such as cylinder block and piston rod are calculated and the slow, rapid and simulated dynamic performance tests are carried out under different temperatures. The results show that the structure of the speed locker is reasonable, the strength meets the design requirements and the lock function is good. The design and test methods used in this paper are correct, feasible and universal, and have guiding significance for similar products.