| 摘要 |
PROBLEM TO BE SOLVED: To provide a car body weight support device of a crawler crane which can move a gravity center position of a lower traveling body according to a condition of the crawler crane, thereby enhancing stability.SOLUTION: A lower traveling body of a crawler crane comprises: a pair of left and right crawler frames, which mounts a crawler at the circumference, respectively; a car body 32 which connects both crawler frames and supports an upper structure; and a pair of car body weights 38, 39 provided at both sides of the car body in a front and rear direction. A car body weight support device 50 comprises: a support mechanism 51 for movably supporting at least one of the pair of car body weights; and a drive part 52 for changing a gravity center G position of the lower traveling body by moving the car body weight 38 supported by the support mechanism 51.SELECTED DRAWING: Figure 5 |
