| 摘要 |
PROBLEM TO BE SOLVED: To provide a working machine which can permanently prevent the breakage of a hydraulic cylinder or the like without performing anti-breakage work to the hydraulic cylinder which has been brought into a free state after the removal of a work element.SOLUTION: The working machine is provided with a front working device 3 which includes a boom 4, an arm 5, and an arm cylinder 8, and the arm cylinder is constituted so that it can rotate with the arm within the range of a predetermined working angle centering on a third connection pin 12. The working machine is provided with a rotation regulating means 13 which allows the arm cylinder to rotate within the range of a working angle when the arm cylinder is connected to the arm and which restricts the rotation of the arm cylinder about the third connection pin 12 in the direction where it separates from the boom by going out of the range of the working angle when the arm is removed from the arm cylinder. |
