| 摘要 |
<p>A transportation system for rolls of web material comprises at least two intersecting conveying lines (2a, 2b, 2c/4), comprising at least a first conveyor (3a, 3b, 3c) and two parallel runways (13B), respectively, at least a carriage (6) which is moveable on at least one of said runways and which can carry and convey said roll of web material, and devices (7) for transferring the roll of web material from the first conveyor to the carriage and vice versa. The uppermost points (12) of the first conveyor define a first plane (A) and the lowermost points of the wheels of the carriage define a second plane (B), which is located at the same or at a higher level than said first plane (A). Where the conveying lines intersect one another, gaps (17) are provided in the runways, through which the conveyor of the first conveying line may move. The carriage is provided with at least three pairs of wheels (35a, 35b), comprising at least two pairs of wheels on one of the runways and at least one pair of wheels on another one of the runways. The distance between the axes of the wheels in each said pair of wheels is larger than the length of said gaps in the runways. The axes of rotation of the wheels have stationary positions in their vertical directions.</p> |
