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有阀型液压凿岩机冲击器是一个具有位置反馈的阀控活塞系统,换向阀在特定的时刻瞬时切换,改变冲击器某一腔的供油规律,使活塞做高速往复运动,打击钎尾对外作功。阀换向过程中的时间、行程、耗油量等都是影响冲击器性能的重要因素。本文分析了换向阀的运动特点及动力特性,通过实验成功地测得了阀的运动速度及位移,从而揭示了阀与活塞相互控制的实际规律,并根据仿真计算及实测结果分析了阀的运动过程对冲击器性能的影响。一、液压凿岩机换向阀的运动特点在应用比较成熟的有阀型液压凿岩机
Valved Hydraulic Rock Hammer Impactor is a valve-controlled piston system with position feedback. The directional valve is switched instantly at a specific moment to change the oil supply rule of a cavity of the impactor so that the piston reciprocates at a high speed and blows the solder tail to the outside Work. Valve commutation process time, travel, fuel consumption, etc. are all important factors that affect the impactor performance. In this paper, the movement characteristics and dynamic characteristics of the directional control valve were analyzed. The valve movement speed and displacement were measured experimentally, which revealed the actual law of mutual control between the valve and the piston. Based on the simulation results and the measured results, the valve movement Impact of Process on Impactor Performance. First, the characteristics of hydraulic rock drill valve movement In the application of more mature valve hydraulic rock drill