| 摘要 |
PROBLEM TO BE SOLVED: To provide a crane that does not need a space in front of a vehicle and can move counterweight only by usual crane derricking operation for shifting the crane from a traveling posture into a working posture.SOLUTION: A crane 1 comprises a boom 14 including a base end boom 141. The crane 1 further comprises: counterweight 30 that can be moved between a boom base end position and a boom tip position on an upper surface of the boom 14; and tip braking means 21 that brakes the counterweight 30 at the boom tip position in a traveling posture.SELECTED DRAWING: Figure 1 |
