| 摘要 |
PROBLEM TO BE SOLVED: To firmly mount a center beam by relieving the concentration of stress applied to a fixing part of the center beam and gate-shaped frames. SOLUTION: In this wing vehicle comprising the center bam 10 extended between top centers of the game-shaped frames (guard frame 30, portal frame 32) stood oppositely to each other at front and rear parts of a load-carrying platform, and a pair of approximately inverted L-shaped wings oscillatably pivoted on left and right both sides of the center beam 10, longitudinal both ends of the center beam 10 are fixed to top parts of the both game-shaped frames (guard frame 30, portal frame 32) by means of bolts BA and nuts NA, a fixing member 50 is mounted on the top part of the center beam 10 and the game-shaped frames (guard frame 30, portal frame 32), the fixing member 50, the center beam 10 and the game-shaped frames (guard frame 30, portal frame 32) are fixed by means of the bolts BB and the nuts NB to obtain the rigidity on a longitudinal edge part of the center beam 10 and to disperse the produced stress.
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