履带起重机液压缓冲装置设计及动态特性分析
Design and Dynamic Characteristics Analysis of Hydraulic Buffer Device for Crawler Cranes
陈卓1
作者信息
- 1. 太原重工股份有限公司,山西 太原 030024
- 折叠
摘要
考虑活塞和油缸之间的偏心误差与油液压缩特性,设计了一种履带起重机液压缓冲装置,深入分析了液压缓冲装置的综合性能与缓冲力变化特征.构建得到缓冲装置动态冲击模型,对缓冲装置在瞬态冲击过程中的冲击特性开展了仿真测试.研究结果表明,缓冲行程时间为0.35s,回复行程时间为0.04 s,实现了快速回程的过程.当冲击初速度提高后,缓冲力峰值与活塞运动位移显著增大,形成了更大包络面积,可以更高效吸收外部振动能量.该研究有效提高起重机节能效果,为后续的参数优化奠定了理论基础.
Abstract
Considering the eccentricity error between the piston and the cylinder and the compression characteristics of the oil,a hydraulic buffer device for crawler crane is designed,and the comprehensive performance of the hydraulic buffer device and the characteristics of the buffer force change are analysed in depth.The dynamic impact model of the buffer device is constructed,and the impact characteristics of the buffer device in the transient impact process are simulated and tested.The results show that the buffer travel time is 0.35 s,and the recovery travel time is 0.04 s,which realises the process of rapid return.When the initial velocity of the impact is increased,the peak buffer force and piston motion displacement increase significantly,forming a larger envelope area,which can absorb external vibration energy more efficiently.The study effectively improves the energy-saving effect of the crane and lays a certain theoretical foundation for the subsequent parameter optimisation.
关键词
履带起重机/液压缓冲装置/阻尼特性/缝隙节流/冲击振动Key words
crawler crane/hydraulic cushioning device/damping characteristics/gap throttling/shock vibration引用本文复制引用
出版年
2024
NETL
NSTL
万方数据