| 摘要 |
A hoisting apparatus for a straddle carrier having a spreader with a frame part having a plurality of lifting points, a plurality of hoisting cables each having a first and second end, a top frame having a hoisting mechanism and a first set of cable pulleys. The hoisting mechanism includes a lifting cylinder and a piston movably arranged within the lifting cylinder, and a second set of cable pulleys mounted onto the top frame, such that the second set of cable pulleys is driven by the extension of the piston and the hoisting cables are passed over the first set of cable pulleys and the second set of cable pulleys, respectively. The second end of the hoisting cables is connected to the hoisting mechanism wherein upon extension of the piston out of the lifting cylinder produces a lifting movement that is of an equal magnitude for each of the plurality of hoisting cables. As such, regardless of a tilting moment caused by an eccentricity of the load, each lifting points of the spreader is arranged to synchronously move an equal distance and hoist the load carried by the spreader in a substantially horizontal position. |
