| 摘要 |
A self-propelled, steerable straddle carrier (10) includes a main frame (12) supported on transport wheels (14) with a tong table (20) and a plurality of hydraulic lift actuator (34) for raising and lowering the tong table (20) relative to the main frame (12). A pair of front and rear slab tongs (42, 44 ) are pivotally mounted on the tong table (20) with a pair of front and rear pinch cylinders (43, 45) for opening and closing the slab tongs (42, 44). A pair of coil tongs (52) are disposed between the front and rear slab tongs (42, 44) with a pair of inverted yoke assemblies for pivotally supporting th e coil tongs (52) and a center pinch cylinder (60) for opening and closing the coil tongs (52). A pair of hydraulic actuators (34) interconnect the yoke assemblies and the main frame (12) for raising and lowering the coil tongs (52) relative to the slab tongs (42, 44) to permit the straddle carrier (10) to transport either stacks of steel slabs or a steel coil.
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