| 摘要 |
PURPOSE:To prevent breakage and noise due to impingement between a cargo bed and a chassis frame, by locking a rod in a hoist cylinder for rising the cago bed to a damper mechanism provided on a support plate for the cargo bed before the tilted bed is abutted against the chassis frame. CONSTITUTION:When a rod 2a having a top end pivotally attached to lift plates 3 through a cross-head 4 is extended by actuating a hoist cylinder 2 which is pivotally attached at its base end to a chassis frame, a tension force is effected in a tension rod 6 which is pivotally attached at its base end to the chassis frame and also pivotally attached to its top end to the above-mentioned lift plates 3 through a coupling shaft 7. With this arrangement the compression force of the hoist cylinder 2 acts to rotate and rise up a cargo bed pivotally attached to the rear end of the chassis frame. In this stage, the rod 2A is fitted into an engaging and releasing groove 9a in a damper member 9 constituting a damper mechanism 8 provided to the coupling shaft 7 before the cargo bed abuts against the rear end of the chassis frame, so that the cargo bed is secured at the maximum angle position. |
