| 摘要 |
1,079,426. Vibratory pile drivers. DEMAG A.G. Dec. 8, 1965 [Jan. 15, 1965], No. 52103/ 65. Heading E1H. [Also in Division Fl] In a vibratory ram having a abody (4) containing an exciter (5a, 5b) of alternating forces and a percussion member (3) axially slidable in and coupled to the body by resilient means, the body (4) being slidable on and supported on a ram guide (2) which is fixedly secured to the rammed article (1), the resilient means for axially and slidably coupling the percussion member (3) with the body (4) comprise adjustable pressure-medium cushions (6, 7). |
