| 摘要 |
PURPOSE:To prevent a dump car from becoming in unstable condition while a carrier box is being tilted by providing a grounding support member protruding downward on both sides at the rear of the carrier box in the carrier box capable of being tilted by a tilting means arranged between a chassis and the carrier box. CONSTITUTION:When an oil pressure cylinder 103 of a lifting means 101 arranged between chassis 2 and a carrier box 1 is extended, the carrier box 1 starts tilting. When the carrier box 1 is tilted to a predetermined angle or more, a traction cylinder 201 and a large and a small links 202, 203 constituting an extraction prevention means A are aligned on a straight line, and the carrier box 1 is damped by the braking force of the traction cylinder 201. At this time, the first roller 302 pivotally supported 303 on a grounding support member 301 protruded downward on both sides of the rear end of the carrier box 1 is grounded when the carrier box 1 is tilted by 35 deg., for example, and in addition the second roller 304 is grounded when the carrier box 1 is tilted by 50 deg., for example, thus the turning sideways of a dump car and the floating of front wheels can be prevented, respectively. |
