【摘要】 以我国煤炭系统使用量最大的ＨＹＤ２００型液压凿岩机为样机，实验研究了液压凿岩机冲击进油压力、冲击频档、冲击能、冲击频率对噪声特性的影响，得出：液压凿岩机在固定，长处产生的声压级随冲击进油压力、冲击能的增大而增大；在其它运行参数相同时，提高冲击频率将降低液压凿岩机产生的噪声；对于具有高、中、低３个频档的ＨＹＤ２００型液压凿岩机，在其它运行参数不变的情况下，低频档产生的声级比中频档产生的声级高，而高频档时产生的声压级最低。更多还原

【Abstract】 The influence of feed pressure, percussive frequency, energy on noise trait of the HYD 200 type hydraulic rock drill, which is widely applied in the coal mining industry was studied. It is found that sound pressure level at a fixed point increases with the increase of feed pressure and energy. When other parameters are identical, increase of percussive frequency will reduce the noise level of hydraulic rock drill. For HYD 200 type hydraulic rock drill, when other parameters are not changed, the sound pressure level produced at low frequency is higher than that at medium frequency. However, the rock drill at high frequency produces the lowest sound pressure level.更多还原