SYSTEM FOR CONNECTING TOOL USED FOR CONSTRUCTION MACHINE AND CONSTRUCTION FACILITIES TO WEARING PART FITTED TO HOUSING CONTAINER

摘要

PROBLEM TO BE SOLVED: To provide a system for connecting a wearing part fitted to the extremity of a housing implement provided with tooth and a adapter and used for a construction machine and in which there is no such danger at all that a key comes off during use, and the tooth can be easily attached or detached at site. SOLUTION: A key 3 is formed to have a partially curved shape where the thickness of the key gradually increases. A zone 3f forming an anchor part for an elastic filling material 4 is provided. The under part of the key 3 is formed so as to fanction as a plug when the filling material is injected. An opening having a symmetric profile is provided at the upper and lower faces of the tooth 1 to insert the key 3 from the lower side. The key 3 is used to function as a plug when the filling material is injected in the opening. A deformed opening matching the curved key 3 is formed in the adapter 2, and lands are formed in other parts than the opening. The land is so constituted that it works as a supporting part for moment when the key 3 is subjected to an extremely large torsional force.