| 摘要 |
PURPOSE:To make it possible to arrange an operation control switch in a sufficient space, by constituting a drive transmission means with a lift chain and a guide sprocket wheel so that the occupying space of the drive transmission means may be made small. CONSTITUTION:Guide posts 3 each composed of an outer post 3a and inner post 3b are planted upright on both sides of the rear ends of a deck 2, and a hydraulic cylinder 8 is disposed in a post support 7 connecting between both posts 3a. A rear gate 5 is elevated along the post 3 by means of the hydraulic cylinder 8 through the intermediary of a drive transmission means 10 which is composed of lift chains 21, 22 that is towed by the cylinder 8 and guide sprocket wheels G, W for guiding the chain 22. Further, an operation control switch 3 for the cylinder 8 is arranged at one side surface of the top end section of the outer guide post 3a. |
