Patent ID: 11859371
Assignee: SANDVIK MINING AND CONSTRUCTION OY
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A wear part for a bucket of a bucket machine, the wear part comprising:
a forward edge arranged for intruding in a material to be handled by the bucket;
an engagement portion arranged for engaging with an engagement edge of the bucket, the engagement portion including a concave cross section formed by contact points arranged on a periphery of a circular arch;
a lever element extending from a side of the engagement portion in a direction backwards from the forward edge;
a fastening unit arranged in a distal end of the lever element, the fastening unit including a raised surface that creates a protrusion extending from a surface of the lever element disposed on a same side as the engagement portion, the fastening unit further having a wear part hole arranged for receiving a fastening element for fastening the wear part to the bucket, the wear part hole extending from the raised surface to a surface of the lever element located on an opposite side of the lever element as the engagement portion, and wherein the fastening unit is arranged to make a tightening structure such that, in use, a force effecting the wear part in a direction backwards from the engagement portion will occur, the fastening unit including a wedge surface extending from the side of the lever element being on the same side as the engagement portion, in the direction backwards, and the wedge surface ending at the raised surface; and
a wedge piece attached movably next to the raised surface, and including a counter-wedge surface being at least essentially parallel with and arrangeable against the wedge surface, the wedge piece further including a contact surface arranged for receiving a tightening element for tightening the counter-wedge surface against the wedge surface.