Design and Dynamic Characteristics Analysis of Hydraulic Buffer Device for Crawler Cranes
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.
NETL
NSTL
万方数据
