| 摘要 |
PURPOSE:To cause a supporting rod to positively maintain its condition for supporting a cargo box by preventing the rod from falling down by such an arrangement wherein the base end part of the supporting rod is caused to couple with a recessed part provided in a branket while the supporting rod is in a condition for supporting the cargo box. CONSTITUTION:It is composed so that the base end part 26 of a supporting rod 14, while it is in a condition for supporting a cargo box 2, can be coupled with a recessed part 24 provided in a bracket 13 fixed to a frame 3 or to one side of the cargo box 2, comprising a supporting axis 20, etc. As the carg box 2 is caused to gradually tilt downward, a cap 16 of the supporting rod 14 is caused to fall in a coupling member 15 fixed to a main frame 6, and as the cargo box 2 is further tilted, moment around the supporting axis 20 in the direction of counterclockwise begins to act. Due to this, the supporting rod 14 rotates to the left around the supporting axis 20 with its bottom surface 28 kept contact with the circumferential wall 25 of the recessed part 24 and the circumferential wall 25 is brought to contact with the circumferential surface 31 of the base end part 26 of the supporting rod 14 and by this, the supporting rod 14 is prevented from falling down. |
