我国潜孔冲击器的发展历程

The Developmental Course of DTH Hammer in China

以国内生产应用最广泛、占主导地位的潜孔冲击器为主线,把建国以来各个时期生产的潜孔冲击器按时间顺序分为四代,分别加以论述,以使同行对我国潜孔冲击器的发展有一个概括的了解。第一代为低气压侧排气焊接式潜孔冲击器,第二代为低气压中心排气式潜孔冲击器,第三代为高气压钎头带尾管式潜孔冲击器,第四代为高气压钎头不带尾管式潜孔冲击器。

with the leading DTH hammer which has the widest applications being the main thread, the paper de-scribes the four generations of the DTH hammers respectively produced during the various periods since the founding of the New China, which are grouped in time order. The purpose is to let the fellows get a general handle on the develop-ment of the DTH hammers of the country. The first generation of DTH hammer is the low air-pressure, welded-on DTH hammer with side exhaust, the second generation is the low air-pressure DTH hammer with center exhaust, the third generation the high-air-pressure-bit DTH hammer with the tail tube, and the fourth generation the high-air-pressurebit DTH hammer without the tail tube.