| 摘要 |
PROBLEM TO BE SOLVED: To absorb striking energy by a support shaft when an impact load acts on a cab and a cab mount bracket is rotated around the support shaft. SOLUTION: The cab mount bracket 17 is pivoted on a chassis frame 11 via the support shaft 22 and fixed on the frame 11 at a predetermined angle by a bolt 24. An end of the shaft 22 is fixed on the bracket 17 and the other end of the shaft 22 is fixed on the frame 11, and when the impact load acts on the bracket 17, the bolt 24 is sheared, and when the bracket 17 is rotated around the shaft 22 together with the end of the shaft 22, a torsional elastic force of the shaft 22 is resistance to the rotation of the bracket 17. The chassis frame comprises a section channel shaped side member 12 to which the bracket 17 is fixed, and a section channel shaped auxiliary member 26 fixed on the member 12 so as to form a closed section with the member 12 and to which the other end of the shaft 22 is fixed. |
