ARM EXTENSION MECHANISM OF CONSTRUCTION MACHINE

摘要

PROBLEM TO BE SOLVED: To simplify the mounting work of an arm extension mechanism in a construction machine. SOLUTION: A link mechanism consists of an extension arm 3 connected with a main body arm 14, an extension rod 4 connected with a main body rod 9, and an operation arm 5 and an auxiliary arm 6 connecting the extension arm 3 with the extension rod 4. A connection upper turn shaft 8 of the auxiliary arm 6 is provided on the extension rod 4 other than a connection turn shaft 10 connecting the extension rod 4 with the main body rod 9 or a connection lower turn shaft 2 of the auxiliary arm 6 is provided on the extension arm 3 other than a rear connection fixing shaft 13 connecting the extension arm 3 with the main body arm 14.