| 摘要 |
A wear part for a tool for an earth-working machine comprises a front tooth tip (6) which, in the fitted condition, protrudes beyond the front edge of the tool (2) in its working direction and which includes a female part (11) facing rearwards in the working direction and cooperating with a corresponding, forwardly protruding male part (3) of an adapter (2), attached to the tool or forming an integral part of the front edge of the tool, and to which the tooth tip is releasably attached by a locking element (5). The male and female parts provide support surfaces facing in different directions and adapted to contact each other. The male part provides at least two support surfaces (8 and 24) disposed each in its own plane at a distance from each other and which in use to face towards the surface of the earth being worked, and the female part provides a corresponding number of oppositely facing support surfaces (12 and 25) adapted to contact the support surfaces of the male part. Should the tip become worn at its bottom face so that surface (8) no longer exists, the tip is retained on the adaptor by contact between surfaces (24, 25). <IMAGE> |
