| 摘要 |
PURPOSE: A cargo box coupling device is provided to shorten an operation time by performing a dumping operation which takes a thing down at a time. CONSTITUTION: A cargo box coupling device of a cargo truck includes a lifting frame, a cargo box, a cargo box supporting structure, a supporting structure coupling unit, and a supporting frame folding unit. The lifting frame(2) is positioned on a top surface of a cargo compartment(11) formed in a rear part of a cargo truck(1), and is vertically lifted by a first lifting cylinder(21) and a second lifting cylinder(22). The cargo box(3) is positioned on a top part of the lifting frame. In the cargo box supporting structure(4), a bottom surface of a bottom frame(41) is higher than a top surface of the lifting frame. The supporting frame folding unit folds a first supporting frame to a top part by an operation of a first rotation cylinder. |
