冲击凿岩机 meaning in English

hammer drill

The dynamic force - displacement relation curve is of crucial important to the design and operation of mechanical impact devices . using one - dimensional wave mechanics and characteristic line theory , this paper presents a testing method for determination of dynamic force - displacement relation curve from one - point strain measurement on an elastic rod endface . the principle of measurement , data processing method and experimental results for penetration into granite are discussed . 4figs . , 5refs
冲击载荷下弹性杆端的作用力-位移关系曲线是冲击机械系统研究的重要内容.基于一维波动力学方程，应用特征线方法，探讨了已知一点应变求取弹性杆端的作用力-位移曲线的测试原理与数据处理方法，以及在花岗岩上冲击凿岩机具的测试结果，对一点应变测试法的可行性进行了论证.图4 ，参5