提升机过卷液压缓冲系统优化设计与仿真研究

针对过卷液压缸缓冲吸收提升箕斗过卷冲击所产生的压力波动问题，通过增加节流阀，接通过卷液压缸有杆腔和无杆腔，对提升机过卷液压缓冲系统进行了优化设计，对优化后的提升机过卷液压缓冲系统工作原理开展了研究，利用AMESIM对过卷液压缓冲系统仿真模型进行了搭建，对比分析了优化前后过卷液压缸有杆腔压力、箕斗位移、箕斗速度的动态性能曲线，仿真研究了节流阀通径对过卷液压缓冲系统的影响规律，研究结果表明：优化后的提升机过卷液压缓冲系统缓冲性能得到提升，节流阀能吸收过卷液压缸有杆腔压力波动，节流阀通径对过卷液压缸活塞复位具有较大影响，当通径为9mm时，过卷液压缓冲系统性能较好，过卷装置动力学特性较好。

Optimum Design and Simulation on Overwinding Hydraulic Buffer System of Hoist

Aiming at the problem of pressure fluctuation caused when overwinding hydraulic cylinder absorbs the overwinding impact of hoist skip, the optimal design of overwinding hydraulic buffer system of hoist was carried out by adding throttle valve and connecting rod chamber and rodless chamber of overwinding hydraulic cylinder. The working principle of the optimized overwinding hydraulic buffer system of hoist was studied, and the simulation models of overwinding hydraulic buffer system were built based on AMESIM. The dynamic performance curves of pressure on rod chamber, skip displacement and skip speed of overwinding hydraulic cylinder before and after optimization were compared and analyzed. The influence of throttle valve diameter on overwinding hydraulic buffer system was simulated and studied. The research results show that the buffer performance of optimized overwinding hydraulic buffer system is improved, and the throttle valve can absorb the pressure fluctuation on rod chamber of overwinding hydraulic cylinder. The diameter of throttle valve has great influence on the piston reset of overwinding hydraulic cylinder. When the diameter valve is 9 mm, the buffer performance of overwinding hydraulic buffer system is better and the overwinding device has better dynamic characteristics.