초록 ▼

The invention concerns a levelling device (10) for an impact roller of the type having at least one out-of-round compactor mass which, when caused to traverse a soil surface, applies periodic compacting blows to that surface. The levelling device of the invention is coupled to the impact roller so a

The invention concerns a levelling device (10) for an impact roller of the type having at least one out-of-round compactor mass which, when caused to traverse a soil surface, applies periodic compacting blows to that surface. The levelling device of the invention is coupled to the impact roller so as to trail behind the impact roller. It includes a support frame (36) and, for each compactor mass of the impact roller, a ground-engaging levelling blade (52) fast with the support frame. The levelling blade is arranged to cut soil which has been traversed by the compactor mass and thereby to perform a soil levelling action. A ground-engaging shoe (58), one for each levelling blade, is connected to the support frame for pivotal movement about an axis transverse to the direction of movement of the impact roller The shoe serves to control the depth of cut achieved by the levelling blade.

대표청구항 ▼

1. A soil levelling device for an impact roller having at least one compactor mass, the levelling device comprising:coupling means for coupling the levelling device to an impact roller so as to trail the impact roller in use; a support frame connected to the coupling means and including a transverse

1. A soil levelling device for an impact roller having at least one compactor mass, the levelling device comprising:coupling means for coupling the levelling device to an impact roller so as to trail the impact roller in use; a support frame connected to the coupling means and including a transverse beam; for each compactor mass of the impact roller, a ground-engaging levelling blade carried by the transverse beam, the levelling blade being arranged to cut soil which has been traversed by the compactor mass and thereby to perform a soil levelling action; and for each levelling blade, a ground-engaging shoe connected to the transverse beam for pivotal movement relative to the transverse beam about an axis transverse to the direction of movement of the impact roller, the shoe having fore and aft portions which lead and trail the levelling blade, whereby the shoe can follow the contour of a surface of the ground to control the depth of cut achieved by the levelling blade.