| 摘要 |
PROBLEM TO BE SOLVED: To securely relieve from the constraint of a cab lowering prevention device. SOLUTION: A cab lowering prevention device 10 to prevent a tilted cab 1 from lowering is installed on a cylinder device 4 installed between the cab 1 and a frame 2 of a cab tilt device 3. Also a pin 8 supported pivotally on a lost motion link lever device 7 of the cab 1 is fitted closely and slidably in an oblong hole 13 provided in the end part of the stay 11 of the cab lowering prevention device 10 pivotally supported on a piston rod 5. In addition, when an unlocking lever 20 is rotated with the claw part 18 of a lock lever 17 interfered with the lower end surface of the stay, the stay 11 escapes in the direction of the cab 1 by its rotating force and, therefore, the engagement of the claw part 18 of the lock lever 17 with the lower surface of the stay is disengaged, and the stay 11 and the piston rod 5 can be retracted against a cylinder. Thus the operation of the cab tilt device 3 with cab lowering prevention device 10 can be facilitated. |
