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使工程机械低噪声化是世界各国普遍关注的问题。日本建立了低噪声型及超低噪声型工程机械的认证制度;欧盟国家更是规定禁止出售超过EU噪声标准的工程机械,同时对机械周围及驾驶员耳边噪声值记录在案,从而对工程机械的噪声加以制约。液压挖掘机是应用最为广泛的一种工程机械,了
To make construction machinery low noise is a universal concern in all countries in the world. Japan has established a certification system for low-noise and ultra-low-noise construction machinery. EU countries have also banned the sale of construction machinery that exceeds the EU noise standard and recorded the noise values around the machinery and the driver’s ear. As a result, Mechanical noise is limited. Hydraulic excavator is the most widely used construction machinery, and