| 摘要 |
A collapsible library range dolly is formed from a pair of side frame mebers, a pair of cross members, and a post. The side frame members each have a pair of swivel casters secured to their bottom surface and there are attachment plates secured to their opposite ends. The cross members each have an upright tubular member secured to their top surface adjacent their ends. Bolts that pass through the upright tubular members have their ends secured to the attachment plates of the side frame members. A vertically oriented post is detachably secured to one of the upright tubular members for pushing or pulling the dolly.
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