| 摘要 |
A tooth and adaptor assembly is provided for a dipper bucket. The assembly includes an adaptor having a rear portion for attaching to a dipper bucket, a tooth capable of releasable attachment to the adaptor and a retainer pin for securing the tooth to the adaptor. The adaptor has a tapered intermediate portion that narrows to a rectangular front portion and a planar surface on a portion of its intermediate portion. A groove traverses the planar surface, and extends perpendicular to the horizontal longitudinal axis of the adaptor. The tooth has a tip at its front end for digging and a socket at its rear end that is configured to receive the front and intermediate portions of the adaptor. When the tooth is coupled to the adaptor, an opening on the rear end of the tooth aligns with the groove to define a passageway that terminates within the socket of the tooth. The retainer pin is inserted into the passageway to secure the tooth to the adaptor and complete the assembly.
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