| 摘要 |
There is disclosed a truck crane of the type having a crane mounted to a truck frame and using wheels for movement which is convertible to a crawler type crane of the type including a truck cab having its own power source and drive train, the frame thereof being split and being engageably disengageable into a forward motive frame section and a rear crane frame section, and the drive train being similarly disengageable to permit the forward motive frame section to be separable from the rear crane frame section, the rear crane frame including a plurality of outrigger jacks positioned on opposed sides of the rear crane frame section, and the frame including a plurality of first mount means positioned on opposing sides thereof, a pair of portable crane tracks, at least one of the pair of crane tracks having an independent power source carried thereon and including flexible motive means for interconnecting the independent power source to a separate control system, and each of the pair of portable crane tracks including mounting fixtures positioned for engageable mounting with the first mount means of the truck frame, whereby the frame and drive train may be split leaving a rear crane frame section, and the portable crane tracks mounted thereon after which the independent power source of the crane track may be connected to its own separate control system thereby to convert the truck crane to a crawler crane.
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