应力波法分析长、短活塞的液压凿岩机冲击性能  

Analysis of Impact Performance for Hydraulic Rock Drill with Long and Short Pistons Using Stress Wave Method

作　　者：杨桢毅[1] 高波[2] 吕创 李砚耕 冀宏[1] 甘海仁[2] YANG Zhen-yi;GAO Bo;LV Chuang;LI Yan-geng;JI Hong;GAN Hai-ren(College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou730050,China;Changsha Research Institute of Mining and Metallurgy Co.,Ltd.,Changsha410012,China;Institute of Chongqing Gederui Heavy Industry Intelligent Equipment,Chongqing402460,China)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050 [2]长沙矿冶研究院责任有限公司,湖南长沙410012 [3]重庆格德瑞重工智能装备研究院,重庆荣昌402460

出　　处：《液压气动与密封》2019年第5期47-50,共4页Hydraulics Pneumatics & Seals

基　　金：甘肃省自然科学基金(1610RJYA009);重庆市自然科学基金(cstc2016jcyjA0067)

摘　　要：该文基于波动力学理论分析了凿岩机冲击过程中能量传递特性,针对同一型号双控式液压凿岩机两个长度不同的活塞,通过实验分别测试了凿岩机在低、中、高三个档位下钎杆应力谱、冲击能、冲击频率,最后得出凿岩机活塞能量利用率。经分析该型号液压凿岩机宜在18.0MPa的冲击压力下选用短活塞来进行钻凿工作。This paper analyzes the energy transfer characteristics of hydraulic drill during impact process based on wave mechanics theory. Aiming at two pistons of different lengths in the same type of double-controlled hydraulic rock drill, the stress spectrum, impact energy and impact frequency of drill rod in low, middle and high gear are tested by experiments. Finally, the energy utilization ratio of piston is obtained. The analysis result shows that this type of hydraulic rock drill is suitable for drilling with short piston under 18.0 MPa impact pressure.

关 键 词：应力波法 液压凿岩机 活塞 冲击性能 

分 类 号：TH137[机械工程—机械制造及自动化]