Invention Grant
US06848858B1 Working machine with reduced upper mass vibrations 失效
减轻上质量振动的工作机

Working machine with reduced upper mass vibrations
Abstract:
According to the invention, a hammer or a ramming machine for compacting soil has a crank mechanism for producing a directed vibration. The crank mechanism is coupled to a spring assembly. The parts of the crank mechanism which move back and forth linearly are made from a material with a density less than that of steel. This construction prevents vibrations which are unpleasant for the person operating the working machine from occurring.
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