| 摘要 |
Left and right tie-down hooks (40, 40) are affixed to the upper plates (32) of left and right, rear side frames (13, 13) formed having a closed cross-sectional shape. The portions of the left and right rear side frames (13, 13), to which the tie-down hooks (40, 40) are provided, are reinforced by left and right reinforcement members (50), respectively. The left and right reinforcement members (50) are located within the closed cross-sections, respectively, of the left and right rear side frames (13, 13) and are provided with: hook affixation sections (55) disposed over the rear surfaces of portions of the upper plates (32), the portions being those to which the tie-down hooks (40, 40) are affixed; partition wall sections (51) extending downward from the front ends of the hook affixation sections (55) and partitioning the closed cross-sections; and left and right flange sections (52, 53) extending forward from the left and right ends of each of the partition wall sections (51). Each of the left and right flange sections (52, 53) is joined to one of the left and right side plates (22, 23) of the rear side frame (13, 13). |
