| 摘要 |
<p>A punching device using a water pump according to the present invention comprises: a punching base body having a driving portion; a head portion which is guided by a lead installed on the punching base body and is provided with a driving shaft having a hollow interior; drive rods which are coupled to the driving shaft of the head portion so as to move up and down with the head portion, and on the end portions of which a water hammer is installed for punching; accumulators which are installed between the drive rods and have a gas storage portion in which gas that is supplied with water is separated and stored; and a pumping unit, which is connected to the driving shaft or the drive rods, for adding gas to water and pumping the water into which air is added through the hollow interior of the driving shaft or rod hollow portions of the drive rods, so as to drive the water hammer and supply gas to the gas storage portion.</p> |
