| 摘要 |
PROBLEM TO BE SOLVED: To rapidly detach/attach a counter weight in a stable state by means of a simplified constitution. SOLUTION: In a counter weight detaching/attaching device 1, for example, a hanging piece 2 for hanging the counter weight 400 is installed protrusively on the top surface of an upper frame 202 of a rotating upper structure of a hydraulic excavator, a hydraulic cylinder 3 is installed in the counter weight 400, and an end piece 35 coupled detachably to the hanging piece 2 is installed in a telescopic rod 34 of the hydraulic cylinder 3.
|
