Linkage structure for arm and bucket of a hydraulicexavator

摘要

The present invention relates to a connection structure between an excavator arm and a bucket, and in particular, a connection pin inserted into the through hole of the arm and the bracket through hole of the bucket; An oil ring fitted between both sides of the arm and an inner side of the bracket of the bucket while the connecting pin is inserted; A metal ring surrounding the oil ring and fixedly coupled to an upper surface of the oil ring; A cover for sealing an outer side surface of each bracket of the bucket; It provides a connection structure of the bucket arm and the excavator comprising. According to the present invention, it is possible to fundamentally prevent the infiltration of foreign particles through the arm and the bucket connection part of the excavator, and also to prevent the oil ring from hardening by external exposure. In case of damage or a part of the connecting pin is damaged, it can be easily replaced or repaired.