摘要
对孔底水压冲击器结构和冲击系统运动过程进行了阐述,基于功率键合图理论描述了冲击系统的能量分配、传递、消耗和贮存状态,建立了冲击系统状态方程组,构建了冲击系统试验仿真模型,获得了活塞和配流阀阀芯的位移、速度、加速度等动态特性曲线。仿真值与计算值接近,验证了模型的正确性。论文研究方法与结果对孔底水压冲击器结构设计与优化提供了重要的理论依据。
The paper expounded the structure of the hydraulic DTH hammer and the motion process of its impact system, and described the energy distribution, transmission, consumption and storage status of the impact system based on power bond graph. It also built the state equations of the impact system, and constructed the simulation model of the impact system. After that, it obtained the dynamic characteristics curves about the displacement, velocity and acceleration of the piston and the spool of the distributing valve. The simulation results were close to the calculations, which verified the correctness of the model. The research method and results offered important theoretical reference for the structural design and optimization of the hydraulic DTH hammer.
出处
《矿山机械》
2017年第9期1-6,共6页
Mining & Processing Equipment
基金
"十三五"国家重大科技专项课题任务"大直径高位长钻孔钻进技术及装备"(2016ZX05045003-004)
关键词
孔底水压冲击器
冲击系统
功率键图
动态特性
hydraulic DTH hammer
impact system
power bond graph
dynamic characteristic
