E - Fixed Constructions – 02 – D
Patent
E - Fixed Constructions
02
D
61/88
E02D 7/06 (2006.01) E02D 13/00 (2006.01) E21B 3/025 (2006.01) F16F 15/08 (2006.01)
Patent
CA 1213444
ABSTRACT TURNING MECHANISM OPERATING ALTERNATELY IN OPPOSITE DIRECTIONS TO FACILITATE THE DRIVING IN OR EXTRACTING OF PILES The invention relates to a turning mechanism for driving in or extracting piles tangential rotary blows being imparted by a rocker arm equipped with balance weights and arranged in rotary manner relative to the pile. In order to render superfluous the hitherto necessary noise-damping, additional damping means, damping members made from an incompressible, elastic material are used, which are placed in recesses in at least one stop of a pair of stops in such a way that there is a deformations, particularly at right angles to the impact direction, which is within the elastic limit of the member and prevents direct contact between the stop pairs. These members are arranged on all parts of the rocker arm which, in operation, form noise sources. As a result of this arrangement and construction of the incompressible, elastic members, the working noise of the turning mechanism is reduced to such an extent that it falls within the limits for residential areas, without requiring the hitherto necessary, additional damping means.
454156
Hochstrasser Jurgen
Mathieu Hans
Hochstrasser Jurgen
Marks & Clerk
Nee Wack Hochstrasser Elisabeth
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