Pneumatic anchor rod hammer drill

The invention discloses a pneumatic anchor rod hammer drill, which is mainly characterized in that a power output shaft of a speed change gear box of the prior rotary impact combination hammer drill is connected with a lengthened shaft on which a transmission gear is arranged, and the transmission g...

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Bibliographic Details
Main Authors BAO WEI, WANG HONGLI, ZHAO JINQIAO, SUN WENJIN, SONG LIXIN
Format Patent
LanguageChinese
English
Published 20.07.2011
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
SHAFTS
TUNNELS
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Summary:The invention discloses a pneumatic anchor rod hammer drill, which is mainly characterized in that a power output shaft of a speed change gear box of the prior rotary impact combination hammer drill is connected with a lengthened shaft on which a transmission gear is arranged, and the transmission gear is meshed with a fiber tail sleeve gear; a rotating part and a shell of the hammer drill are corporately fixed on a drill body seat to form a hammer drill whole; a support axis of an air leg is arranged on a gravity line of the weight of the hammer drill whole; and an air inlet pipe of an air motor is directly connected to a valve of an operating arm. The pneumatic anchor rod hammer drill realizes downward shift of the weight of the rotating part, avoids the top-heavy phenomenon, improves the integral stability, avoids direct impact, reduces strong shock during working, and is convenient for a worker to operate.
Bibliography:Application Number: CN2009115877