| 摘要 |
PURPOSE:To make loading or unloading ever so easy, by attaching a wing rotatably in vertical directions to each of liftable sliding arches installed in front and rear of a freight room, while interlocking both sliding arch lifting and wing rotating motions together, and constituting them to be selectable individually. CONSTITUTION:An extension checking member 34 is attached to a strut 12, and when a cylinder 14 is set in motion, a piston rod 6 fails to do its downward extension and therefore a sliding arch 8 is made to go up instead whereby tensile force is produced in a tension member 30, and a wing 2 rotates upward, opening the side of a freight room. At this time, if a ratchet buckle 18 is made to come into a state of being unlocked, a lock of the tension member 30 is released and thereby the wing 2 is in no case opened any longer. And, when the extension checking member 34 is moved and the ratchet buckle 18 is driven by a rock cylinder 14, rotation of the wing 2 alone takes place. With this constitution, loading or unloading for freight can be simplified so facile. |
