| 摘要 |
PURPOSE:To move a gate door in a desired direction, to the right or to the left, and to stop it accurately at a desired point by utilizing a double rod type hydraulic cylinder so as to move the gate door on a truck load box from the center of the load box to both sides. CONSTITUTION:In order to open a load box 1, a roof member 13 on the opening side of the load box 1 is rotated upward through a hydraulic cylinder 12 on the roof. Oil pressure is supplied to a double rod type hydraulic cylinder 6 on the lower part of the rear gate door 2, so as to project cylinder blocks 7 on the opening side and on the reverse side. A rope 10 that engages with a front end block 8 of the cylinder rod 7 is drawn to the projected direction of the cylinder rod 7, so as to move a guide rod 3 by which the rope 10 is stopped, in the projected direction of the cylinder rod 7, along with the gate door 2, whereby the reverse side is opened. Due to the actuation of the rope 10, movement in a long distance is possible with a small amount of cylinder stroke. |
