| 摘要 |
PURPOSE:To improve running performance at a curved passage part by providing a group of left wheels or a group of right wheels to be freely movable in the right and left to a main body among front/rear and right/left wheels provided in a carriage freely running along a rail installed in a factory. CONSTITUTION:A pair of front/rear drive wheels 3 are provided on one side of the lower surface of a main body 2 of a carriage 1, and a pair of front/rear idler wheels 4 are disposed on the other side. Each drive wheel 3 is supported by a vertical rotary shaft 9 in a bottom-open case 7 supported freely rotatable at the main body 2 through an axle 8, and rotated by a drive 11 installed in the case 7. In the meanwhile, each idler wheel 7 is installed at a bracket 14 through an axle 15, and the bracket 14 is installed through a vertical shaft 17 at a slide plate 16 supported and guided along a guide rail 20 extended along the width of the carriage provided in the main body 2 through a sliding body 21. The idler wheels 4 are thus made movable right and left to the main body 2, and follow-up to a rail 5 is improved. |
