潜孔钻机的工作效果,很大程度决定于钻具的结构是否合理,良好的钻具设计应达到两个目标:较高的效率和较长的使用寿命。以往,我们在设计冲击器时,最关心的是单次冲击功和冲击频率两个指标,而在确定单次冲击功时,又常常过分耽心合金片的强度;在结构上则尽量使冲击器短而轻巧,以利于加工和使用,所以采取短而轻的活塞和较小的活塞行程。按一般公式计算这种冲击器,虽然单次冲击功较低,但是冲击频率提高了,冲击功率也比较高。然而,生产实践表明,这种冲击器不仅效率不高,而且寿命也较低。这是与没 DTH drilling rig work, largely determined by the structure of the drill is reasonable, good drilling design should achieve two goals: high efficiency and long service life. In the past, we design the impactor, the most concerned about the single impact energy and impact frequency of the two indicators, and in determining the single impact energy, and often overly worried about the strength of the alloy sheet; the structure is to try to make the impact Short and lightweight device to facilitate processing and use, so take a short and light piston and piston stroke smaller. Calculated according to the general formula of this kind of impactor, although a single impact energy is lower, but the impact frequency is increased, the impact power is relatively high. However, production practice shows that this kind of impactor is not only inefficient but also has a low life expectancy. This is not with