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我矿YQ-150型潜孔钻均采用C-150型冲击器凿岩,这种冲击器钻头固定方式是平键固定,受力不均,卡键口一旦磨大,键易冲出,钻头落进孔内造成磨孔。为此,对C-150型冲击器某些结构部分进行改革,先后改革40个,共穿孔12299米。修复的冲击器平均进尺307(米/个),使得报废的冲击器得到利用。修复后的冲击器最高寿命达1200(米/个),最低的也有150(米/个)现将改进部分介绍如下:
I mine YQ-150 DTH holes are used C-150-type impactor rock drilling, the impact of drill bit fixed flat key is fixed, uneven force, the card key mouth once grinding large, easy to punch out, the drill Fall into the hole caused by grinding holes. To this end, the C-150 impactor some of the structural reform, has reform 40, a total of 12299 meters perforation. The average impact hammer repair 307 (m / s), making the scrapped impactor to be used. The maximum life of the repaired impactor is 1200 (m / s), and the lowest is 150 (m / s). Some improvements are introduced below: