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Study on Rotational Mechanism of DTH Hammer

Xinhua Zhang

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Abstract

Combining traditional DTH hammer with pneumatic rock drill,by reference to the rotational mechanism of rock drill,studies the rotational mechanism of DTH hammer and introduces a new type of DTH hammer that uses backstroke energy of piston to drive drill to rotate.Researches indicate that the new type of DTH hammer without drilling machine can make DTH hammer achieve percussive and rotary drilling using air compressor.It provides a new technology for raising the efficiency of large caliber curtain engineering,water conservancy hydropower engineering,and trenchless engineering in our country.

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What this paper is about

Combining traditional DTH hammer with pneumatic rock drill,by reference to the rotational mechanism of rock drill,studies the rotational mechanism of DTH hammer and introduces a new type of DTH hammer that uses backstroke energy of piston to drive drill to rotate.Researches indicate that the new type of DTH hammer without drilling machine can make DTH hammer achieve percussive and rotary drilling using air compressor.It provides a new technology for raising the efficiency of large caliber curtain engineering,water conservancy hydropower engineering,and trenchless engineering in our country.

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Available abstract

Combining traditional DTH hammer with pneumatic rock drill,by reference to the rotational mechanism of rock drill,studies the rotational mechanism of DTH hammer and introduces a new type of DTH hammer that uses backstroke energy of piston to drive drill to rotate.Researches indicate that the new type of DTH hammer without drilling machine can make DTH hammer achieve percussive and rotary drilling using air compressor.It provides a new technology for raising the efficiency of large caliber curtain engineering,water conservancy hydropower engineering,and trenchless engineering in our country.

Key concepts: Hammer, Drill, Engineering, Mechanism (biology), Drilling, Mechanical engineering, Gas compressor, Hydropower

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