| 摘要 |
A retainer pin assembly and tooth for an excavation tooth and adaptor assembly is provided. The retainer pin assembly can comprise at least one retainer pin section having a circular longitudinal main body with chamfered leading edges at one end for insertion into a passageway in the adaptor, and a displacement-bearing block having at least one facet disposed at the opposit e end. The tooth can comprise at least one opening on a sidewall having one fl at vertical bearing surface to correspond to a facet of the displacement-bearin g block when a retainer pin section is inserted into the adaptor passageway. Magnets can be disposed on the chamfered ends of a pair of retainer pin sections to urge the retainer pin sections towards one another when inserted in the adaptor passageway.
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