| 摘要 |
This invention deals with a multipurpose material-handling device. It is possible to quickly modify the backbone beam dolly to perform a variety of material-handling tasks. In its most basic version the backbone beam dolly is equipped with a pair of non-swivel wheels forming a wheel assembly at one end and a pair of swivel wheels at the other end. Four-wheel dollies can also be used to replace the wheel assemblies. A crane beam can be rigidly affixed to the backbone beam dolly. With the addition of the crane beam and outrigger it is possible to pick-up heavy loads safely and transport them over vast distances by manually towing the backbone beam dolly or towing it with a lightweight vehicle.
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