| 摘要 |
A conveyance truck movable along a coating line provided with a dip tank includes a suspended supporting device for supporting a vehicle body, a raising and lowering device for raising and lowering the suspended supporting device, and a posture adjusting device for adjusting the posture of the vehicle body by operating the suspended supporting device. The raising and lowering device includes a first supporting axle disposed in the front section in the travel direction, a second supporting axle provided in the rear section to be movable towards and away from the first supporting axle, a crank arm supported rotatably on the second supporting axle and having the suspended supporting device supported rotatably at its free end portion by means of a free end supporting axle, a swinging arm fixed to the first supporting axle and having a free end portion coupled to an intermediate position of the crank arm by means of a coupling axle, and an arm drive mechanism for causing the crank arm to rotate about the second supporting axle by means of the swinging arm.
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