Container crane, and method of determining and correcting a misalignment between a load-carrying frame and a transport vehicle
First Claim
1. A container crane, comprising:
- a boom;
a trolley movable along the boom;
a hoist mechanism connected to the trolley and having suspended therefrom a load-carrying frame, comprised of a spreader and head block, for moving a container to and from a transport vehicle;
an optical detection device arranged on the trolley for identifying longitudinal and transverse edges of the head block or spreader and of the transport vehicle;
a processing unit operatively connected to the detection device and constructed to ascertain a spatial disposition of the longitudinal and transverse edges,calculate a position of longitudinal and transverse center lines of the head block or spreader as well as of the transport vehicle, as well as their spatial disposition, anddetermine the presence of an offset between the longitudinal and transverse center lines of the head block or spreader and the center lines of the transport vehicle, and/or the presence of a rotation angle of the longitudinal and transverse center lines, andan adjustment assembly acting between the head block and the spreader, wherein the adjustment assembly is operated in response to the presence of an offset or rotation angle to compensate the offset or rotation angle by moving the spreader in relation to the head block.
1 Assignment
0 Petitions
Accused Products
Abstract
A container crane includes a movable trolley and a load-carrying frame pendantly connected to the trolley and comprised of a spreader and a head block, for transfer of a container from or to a transport vehicle. Plural optical detectors are mounted on the trolley for identifying longitudinal and transversal edges of the head block or spreader and the transport vehicle. Operatively connected to the detectors is a processing device for determining a spatial position of the edges and calculating a position of longitudinal and transversal center lines of the head block or spreader and the transport vehicle and their spatial positions in relation to one another. In this way a possible offset of the center lines of the head block or spreader with regard to those of the transport vehicle in longitudinal and transversal directions as well as a rotation angle of the center lines can be determined, whereby a detected offset or rotation angle is compensated by displacing the spreader relative to the head block.
42 Citations
28 Claims
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1. A container crane, comprising:
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a boom; a trolley movable along the boom; a hoist mechanism connected to the trolley and having suspended therefrom a load-carrying frame, comprised of a spreader and head block, for moving a container to and from a transport vehicle; an optical detection device arranged on the trolley for identifying longitudinal and transverse edges of the head block or spreader and of the transport vehicle; a processing unit operatively connected to the detection device and constructed to ascertain a spatial disposition of the longitudinal and transverse edges, calculate a position of longitudinal and transverse center lines of the head block or spreader as well as of the transport vehicle, as well as their spatial disposition, and determine the presence of an offset between the longitudinal and transverse center lines of the head block or spreader and the center lines of the transport vehicle, and/or the presence of a rotation angle of the longitudinal and transverse center lines, and an adjustment assembly acting between the head block and the spreader, wherein the adjustment assembly is operated in response to the presence of an offset or rotation angle to compensate the offset or rotation angle by moving the spreader in relation to the head block. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of determining a misalignment between a load-carrying frame of a container crane and a transport vehicle, comprising the steps of:
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identifying a first longitudinal edge and a first transverse edge of the transport vehicle; identifying a second longitudinal edge and a second transverse edge of the load-carrying frame; calculating a distance between the first and second longitudinal edges and a distance between the first and second transverse edges to determine longitudinal and transverse center lines of the load-carrying frame and the transport vehicle in longitudinal and transverse direction; and checking the presence of an offset or rotation angle in dependence on a positional relationship between the center lines. - View Dependent Claims (26, 27, 28)
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Specification