液压与气动2025，Vol.49Issue(4)：79-91,13.DOI:10.11832/j.issn.1000-4858.2025.04.010
双控式液压凿岩机冲击活塞与缸体最佳间隙设计
Optimal Clearance Design Between Impact Piston and Cylinder of Dual-chamber Controlled Hydraulic Rock Drill
摘要
Abstract
Taking a certain type of dual-chamber controlled hydraulic rock drill as the research object,this study aims to minimize the clearance energy losses between the impact piston and the cylinder.The lumped parameter modeling method is adopted to establish the mechanical models of the impact system,the damper system,the rock and the piston and cylinder clearance energy consumption model on the basis of considering the compressibility of the oil,the pipeline pressure losses and the leakage,and the corresponding AMESim graphical solving model is constructed.Under specified structural parameters,the motion curves of the piston and the spool valve,the transient process of the controlled chamber pressure and the characteristics of the clearance energy losses are calculated.The impact mechanism of size on clearance energy consumption is analyzed.The relationship of the piston-cylinder clearance and the working pressure are summarized when the energy loss of the gap is the smallest.It can provide a theoretical basis for the determination of the radial fit gap between the piston and the cylinder of a hydraulic rock drill.关键词
双控式液压凿岩机/冲击活塞/缸体/能量损失/最佳间隙Key words
dual-chamber controlled hydraulic rock drill/impact piston/cylinder/energy losses/optimal clearance分类
机械制造引用本文复制引用
王建森,闫红亮,张鑫,王彦军,刘彬,魏列江..双控式液压凿岩机冲击活塞与缸体最佳间隙设计[J].液压与气动,2025,49(4):79-91,13.基金项目
甘肃省技术创新引导计划(22CX8GA119) （22CX8GA119）
甘肃省科技重大专项(204257959071) （204257959071）
