| 摘要 |
PROBLEM TO BE SOLVED: To reduce the deformation of a cab and prevent the dropping out of the cab by providing such a structure as to rupture a strength setting bolt when a cab hinge bracket receives an impact and sufficiently transmit the impact energy received by the cab even if the strength setting bolt is ruptured. SOLUTION: A cab hinge bracket 3 is mounted on a chassis 1 by one strength pin 24 in such a manner as to be rotatable, and the cab bracket 3 is further fixed to the chassis 1 by four strength setting bolts 25 arranged in rectangular form so as to surround the strength pin 24. When an impact force acts on a cab and the cab hinge bracket 3 by the collision of a vehicle, the strength setting bolts 25 are ruptured when the impact force is larger than a prescribed value. At this time, the cab hinge bracket 3 is rotated around the strength pin 24 since the strength pin 24 has a high strength with large section, whereby the impact force in collision is absorbed. Further, the impact energy received by the cab can be also transmitted to the chassis 1. |
