公开(公告)号：US3788757A

公开(公告)日：1974-01-29

申请号：US3788757D

申请日：1971-01-27

Applicant: SOUTH AFRICAN INVENTIONS

Inventor： BERRANGE A

IPC: E02D3/02 ,  E02D3/026 ,  E01C19/26

CPC classification number: E02D3/026 ,  E02D3/02

Abstract: The invention provides an impact roller in which its crosssectional profile is deformable to permit variation of the lift of the centre of gravity of the roller. Thereby the impact delivered by the roller to underlying soils and gravels may be varied.

Abstract translation: 本发明提供了一种冲击辊，其中其横截面轮廓可变形，以允许辊的重心的升程变化。 因此，辊子对下层土壤和砾石的影响可能会有所不同。