| 摘要 |
<p>A hydraulically operated low noise hammer, comprising an operating pedal (21) allowing pressure oil to flow in when depressed to turn on and to shut off when released to turn off and a mechanism allowing a chisel part (10) of a hammering piston (1) to be stored in a hammer body (7) when the operating pedal (21) is released to turn off, wherein the hammering piston (1) installed slidably in the hammer body (7) is raised or lowered by switching the hydraulic pressure to directly hammer a crushed object by the chisel part (10) of the hammering piston (1).</p> |
