In Hole hammer
作者： Dietmar Jenne
DOI:
关键词:
摘要: An in-hole hammer for boring in ground has an elongated hollow housing carrying internal striking piston a chamber. exchangeable head is threadably connected to the forward end of and impacts against wall defining chamber transmit driving impact energy head. A rod which urges forwardly rotates it about longitudinal axis rear through connecting piece non-rotatably fixed, but slidable relative, so that axially directed produced by not transmitted rod.
lens.org 参考文章(13)
Steven W. Wentworth, Pneumatic impact tool for pipe insertion ,(1994)
Michael Baron, Isolator assembly for a pneumatic underground piercing tool ,(1990)
Paul B. Campbell, Paul W. Crites, James E. Coffman, Ewald H. Kurt, Percussion drill assembly ,(1996)
Warren T. Lay, Leland H. Lyon, Reversible casing for a down-the-hole percussive apparatus. ,(1994)
Gerhard Balve, Franz-Josef Puttmann, Alfons Hesse, Paul Schmidt, Ram boring machine ,(1990)
William Lister, Pneumatic percussion hammers ,(1989)
Stig Erling Bakke, Bidirectional hydraulic jar ,(1994)
Mark Randa, Robert F Crane, Steven W Wentworth, Reversible pneumatic ground piercing tool ,(1996)
Jon A. Haas, Payce Reynolds, Robert F. Crane, Steven W. Wentworth, Dual-diameter pneumatic ground piercing tool ,(1993)
William A Morrison, Fluid actuated percussive tool ,(1957)