| 摘要 |
A telescopic boom mobile crane wherein the boom may be disconnected from the turntable characterized in that the crane vehicle has rollers (or their equivalent) to support the collapsed boom on the vehicle while permitting the boom longitudinally to move along the vehicle, releasable means being provided pivotally to connect the base of the boom to the vehicle and drive means being provided to move the boom longitudinally relative to the vehicle. This enables a boom of longer length that hitherto to be stowable on the crane vehicle itself for transportation.
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