Ground improvement equipment with cast excavator wing covering wear-resistant member detachably mounted on excavator wing surface

摘要

PROBLEM TO BE SOLVED: To provide a covering member formed of an easily attachable/detachable wear-resistant member, as a countermeasure for wear of a drilling blade in a ground improvement device for forming a crushed stone pile.SOLUTION: A cast drilling blade covering wear-resistant member 30 is an integrated body formed by melting wear-resistant raw material and casting in a casting mold. Upon attachment to a drilling blade, a groove 31A of the cast drilling blade covering wear-resistant member 30 is fitted and attached to a cylindrical protrusion part of the drilling blade. Then, a bolt is inserted into a penetrated bolt insertion hole in the drilling blade, is fastened to a screw hole 32A provided in the drilling blade covering wear-resistant member 30, and thereby the drilling blade covering wear-resistant member 30 is surely and easily attached to the drilling blade. The drilling blade covering wear-resistant member 30 is attached to a pair of drilling blades before use.