LOCK IN AN ATTACHMENT SYSTEM FOR CONNECTING A GROUND ENGAGING TOOL TO A BUCKET LIP AND AN ATTACHMENT SYSTEM USING SUCH LOCK

摘要

A lock is disclosed for use within an attachment system that connects a ground engaging tool to a bucket lip. The bucket lip has a lug attached thereto, and the ground engaging tool has a recess which receives the lug in use. The lock is disposed, in use, between the lug and the ground engaging tool. The lock has a body, a force applying member and a force receiving member, such that the application of force by the force applying member causes the force receiving member to protrude from a first side of the body and to engage the lug. The present invention involves providing a preferred failure mode for the lock. The lock is constructed so that the relative hardnesses of the lug, the body, the force applying member and the force receiving member are such that the application of a sufficiently large force via the lug to the protruding portion of the force receiving member will preferentially cause deformation of the protruding portion of the compressing member ahead of deformation of the body or the force applying member.