| 摘要 |
<p>Hydraulic-pneumatic asphalt cutting pneumatic hammer holder equipped with a pressure multiplier consisting of pneumatic piston (7) coaxially joined with hydraulic piston (8), with a smaller surface, so as to transform the pneumatic pressure of approximately seven atmospheres to hydraulic pressure of approximately 50 atmospheres, which then is used to power a hydraulic cylinder (11), equipped with a pneumatic hammer (2), of known type, increasing the extraction power of spade tool (3) and the driving velocity of said tool, and decreasing vibration, absorbed by the hydraulic piston.</p> |
