摘要
针对混凝土输送泵主泵送回路换向冲击问题,深入分析和研究了产生换向冲击的根本原因,并提出了3种解决方案。增加阻尼器,充分利用摆缸换向所需的大约0.2 s时间,将主泵送油缸的高压油通过阻尼器来进行预卸荷。合理选用换向阀,充分考虑换向阀的过渡机能对换向冲击的影响。并接蓄能器,利用蓄能器的吸振功能来减小回路在换向时所产生的液压冲击。分别对这3种方案做了详细的理论计算,并进行了计算机动态仿真和实验研究。结果表明,这3种方案对减小主泵送回路换向时产生的液压冲击都具有显著的效果。
The paper analyzed the root causes for the reversing impact of main pumping loops of a concrete delivery pump and put forward three solutions. Firstly, dampers are added to make full use of the approximate 0.2 second that the swing cylinder takes to reverse. When the high pressure oil of the main pump flows through the dampers, its load is released in advance. Secondly, proper reversing valves are selected to take the influence of their transition on reversing impact into full consideration. Thirdly, accumulators are connected in parallel to utilize their absorption of impact for reducing the hydraulic impact of main pumping loops when reversing. Theoretical calculation, dynamic simulation and experimental study of the three solutions were carried out, the results of which indicate that the solutions are effective.
出处
《机械科学与技术》
CSCD
北大核心
2006年第9期1120-1125,共6页
Mechanical Science and Technology for Aerospace Engineering
关键词
混凝土输送泵
换向冲击
concrete delivery pump
reversing impact
