INSERT FOR ATTACHING A TIP OF AN EXCAVATOR TOOTH

摘要

The present invention relates to an insert for removably attaching an excavator tooth tip, wherein the tip includes a sleeve adapted to fit on a holder secured to the digging edge of an excavator bucket. Apertures are provided in opposed portions of the sleeve and adapted to be aligned with a bore in the holder running parallel with the digging edge of the tooth tip and along a plane containing the centerline of the tooth. The insert comprises a first and second metal member having a resilient element sandwiched between them which is loaded in compression. One surface of the insert is adapted to bear against the surfaces of the digging edges of the apertures in the sleeve portions while the other surface of the insert bears against the surfaces facing away from the digging edge. The first metal part is U-shaped longitudinally with the legs of the U shaped first metal part extending away from the digging edge of the tip and overlapping the ends of the second metal part. The gap between the end of the U-shaped legs and the surface of the respective apertures in the sleeve is less than the allowable resilient travel of the resilient member within the fatigue limits of the resilient member.