| 摘要 |
A roller conveyor extension includes a base frame having elongated parallel first and second tracks, each of the tracks having rearward and forward ends. First and second carriages reciprocate rearwardly and forwardly between the rearward and forward ends of, respectively, the first and second tracks. A roller support structure having back and front ends, and extending along an axis, supports a plurality of rollers, each of which rollers is adapted for rotational motion about a roller axis extending along an axis perpendicular to the roller support structure axis. The roller support structure is pivotably attached to each of the first and second carriages such that the roller support structure is capable of both rotational motion about a pivot axis and rearward and forward reciprocating motion with respect to the base frame.
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