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目前,国内外大多数振动压路机的双振幅调节机构均采用自由偏心块与固定偏心块分开的方式来获得高低振幅。当起振、停止或高低振幅变换时,不可避免地造成自由偏心块和固定偏心块发生撞击的现象,由此带来严重的二次污染(注:一次污染系指振动腔内各零件表面和轴承润滑油中
At present, most double-amplitude adjusting mechanisms of vibratory roller at home and abroad adopt the method that the free eccentric block is separated from the fixed eccentric block to obtain the high-low amplitude. When start-up, stop or high-low amplitude transformation, it is inevitable to cause the free eccentric block and the fixed eccentric block to collide with each other, resulting in serious secondary pollution (Note: primary pollution refers to the vibration of the surface of the parts and Bearing lubricant