| 摘要 |
PROBLEM TO BE SOLVED: To divide a ROPS frame into a lower ROPS frame and an upper ROPS frame and perform a firm bolt fastening during assembly.SOLUTION: In a ROPS frame of a tractor, nuts are welded to an inside surface at an inner part of a rectangular tube in a vertical juncture part between a bilaterally lower ROPS frame 32, 32 and an upper ROPS frame 33, and fitted with a U-shaped plate 37 consisting of a frontside plate, a backside plate, a bilateral inside plate which is U-shaped in a plan view. A plate thickness of the U-shaped plate 37 is thinner than those of the rectangular tube used as the lower ROPS frame 32, and the upper ROPS frame 33. The ROPS frame is sandwiched by the frontside plate, the backside plate, the bilateral inside plate of the bilateral connection recess 35a, 35a and the frontside plate, the backside plate, the bilateral inside plate of the U-shaped plate 37 and fastened by a bolt.SELECTED DRAWING: Figure 6 |
