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冲击能是凿岩机的主要性能参数之一,它的测定对确定凿岩机的合理结构参数以及对整机性能的调试和鉴定,都是不可缺少的重要手段。测定冲击能的方法有几种,作者根据国际标准化组织推荐标准(ISO/DP2787)并结合我国实际情况,决定选用测定钎杆应力波来计算冲击能的方法(以下简称应力波法)。1.测试原理根据波动理论,活塞冲击钎尾时,冲击能量以应力脉冲的形式自钎尾向钎杆—钎头—岩石界面传递,
Impact energy is one of the main performance parameters of rock drill. Its determination is an indispensable and important measure to determine the reasonable structural parameters of rock drill and to debug and identify the performance of the rock drill. There are several ways to measure the impact energy. According to ISO / DP2787 and the actual situation in our country, the author decides to choose the method to calculate the impact energy by measuring the stress wave of the drill rod (hereinafter referred to as the stress wave method). 1. Test principle According to the wave theory, when the piston impacts the shank, the impact energy is transmitted from the shank to the shank-bit-rock interface in the form of stress pulse,