| 摘要 |
A method for lifting, stacking or otherwise manipulating a length of pipe is provided which includes the steps of providing a longitudinally orientated base frame; providing a movable carriage supported on the base frame, and providing a pipe lifting structure mounted to the carriage for independently supporting a length of pipe in a longitudinal position with respect to the base frame. The pipe lifting structure has first and second telescopically extendable lifting arm assemblies that are pivotally mounted to a longitudinally orientated pipe trough for supporting a length of pipe in the pipe trough. A means for pivotally raising and lowering the lifting arm assemblies and thereby said pipe trough and support length of pipe is provided. The method includes providing means for pivotally raising and lowering the lifting arm assemblies remotely located from the pipe lifting structure. Hydraulic cylinders and rams are provided to move the lifting structure.
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