| 摘要 |
A replaceable wear part (10, 20) of a soil-working tool which has a working surface region (12), and a wear protecting element (14; 21, 21a; 30) mounted on the wear part and having a working edge (19, 24) in which: (1) the wear protecting element (14; 21, 21a; 30) is mounted in position via an adhesivel y secured tongue and groove type of interfit (15, 18) and the working edge (19 , 24) extends transversely of the longitudinal axis of the groove (18); (2) relative slidable movement can take place longitudinally of the groove (18) during mounting and de-mounting; (3) the initial fit between the tongue and groove defines a space for introduction of adhesives; and (4) the interfit includes a diverging formation (15a; 23, 23a; 31) which resists relative separation in a direction perpendicular to the groove (18) so that resistanc e to longitudinal displacement is provided by the adhesive, and resistance to displacement perpendicular to the axis is carried by the diverging formation .
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