公开(公告)号：US3589298A

公开(公告)日：1971-06-29

申请号：US3589298D

申请日：1969-05-13

申请人： PLASSER BAHNBAUMASCH FRANZ ,  JOSEF THEUER

发明人： PLASSER FRANZ ,  THEUER JOSEF

IPC分类号： E01B27/20 ,  E01B27/13 ,  E01B27/17 ,  E01B27/16

CPC分类号： E01B27/17 ,  E01B27/13 ,  E01B2203/027 ,  E01B2203/086 ,  E01B2203/16

摘要： A ballast-tamping unit includes two pairs of surface tampers fixedly mounted on two legs of two carrier elements. A common crank shaft supports the two carrier elements independently and vibrates the elements upon rotation thereof. The carrier elements move freely in a plane perpendicular to the crankshaft, and the crankshaft is supported for free movement in a plane perpendicular thereto. The unit is vertically adjustably mounted.