| 摘要 |
A dump trailer having a bed pivotally attached at its rear end to a trailer frame. The trailer bed is raised and lowered by use of an air bag assembly attached at one end to the trailer frame and attached at the other end to the trailer bed. The trailer has a frame formed of hollow frame members which form a reservoir for holding compressed air. Conduit and valve means communicate the compressed air in the hollow frame members with the air bag assembly for inflation to thereby raise the trailer bed. The valve permits air to be exhausted from the air bag assembly to lower the trailer bed. An air compressor operated from the rotation of one of the trailer tires during movement of the trailer provides compressed air to the hollow frame members.
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