Abstract:
The invention concerns a method and equipment for dampening the swing of a crane's load, where the equipment includes an open control system for controlling the movements of the crane's lifting carriage (1), and aimed at minimizing the swing of the load (2). In order that it is also capable of effectively dampening the swing that the open control system is not capable of dampening, the equipment also includes a means of calculating the ideal plan of movements achieved with the help of the open control system, and mechanical swing prevention equipment (3, 4), and equipment for controlling the dampening behaviour of the mechanical swing prevention equipment, so that it allows load swing according to the said ideal plan of movements, and dampens only the swing that deviates from this ideal plan of movements.
Abstract:
The present invention relates to a dockside crane (9) for moving cargo (C) between a dock (10) and a water-borne vessel (11). The crane has an elongated girder (23) extending over the dock and vessel. The crane can vertically raise and lower the girder so as to minimize distance and travel time for the cargo. A trolley (27) which has a cargo engaging device (28) and two side paddles (29) engages and lifts the cargo. The cargo is held between the paddles to prevent sway during acceleration of the cargo, allowing higher travel speeds. Preferably, an independently movable operator cab (31) is provided, and the paddles preferably extend below the center of gravity of the cargo.
Abstract:
The machine comprises a gripping member (4) provided with jaws (23 and 24) for clamping objects such as bags (11). The gripping member (4) is displaceable along a pivoting rail (3). Hydraulic means enable to limit the clamping force and the displacement speed of the jaws (23 and 24). It is also possible to limit the maximum lifting force and the lifting speed of the gripping member (4).
Abstract:
Combined module handling and crane system on a vessel (10), comprising a crane pedestal (22) placed on a deck (12) of the vessel (10), wherein said crane pedestal (22) is equipped with a top mounted and swingable crane (20), and a side mounted and vertically skidable module handling support cursor (30), and the vertically skidable module handling support cursor (30) is operative to travel between the guide tracks (40) on the crane pedestal's (22) stationary lower part (22b) and the guide tracks (42) on the crane pedestal's (22) swingable upper part (22a).
Abstract:
A load control apparatus and method for controlling movement of a suspended load is disclosed. The load control apparatus includes: a base for attachment to or forming part of a load; a support element pivotally secured to and extending from the base for receiving and/or connecting to a lift line; and actuation means connected to the support element and to the base at respective positions which are spaced from the pivotal connection between the support element and the base such that actuation, in use, of the actuation means causes the base to pivot relative to the support element.
Abstract:
L'invention concerne un système de contrôle du déplacement relatif d'une charge (P) comportant au moins un moyen d'amortissement (1) principal d'action longitudinale de course (C) de déplacement, et ayant deux extrémités, l'une étant liée à un bâti et l'autre étant liée à la charge, comprenant un dispositif de compensation comportant au moins un moyen d'amortissement secondaire d'action longitudinale ayant deux extrémités dont l'une est solidaire dudit bâti et l'autre est liée par une bielle (6, 7) à l'extrémité du moyen d'amortissement principal liée à la charge, ledit moyen d'amortissement secondaire étant disposé de façon à ce qu'en un point de la course C, le moyen d'amortissement secondaire a une action de direction orthogonale à la direction dudit déplacement.
Abstract:
An offshore floating vessel comprising a hoisting system adapted for suspending a load attached to a connecting device of the floating vessel and for raising or lowering a load connected to the connecting device from the floating vessel to or from the sea floor; the hoisting system comprising a drive for moving the connecting device and one or more emergency brakes configured to inhibit motion of the connecting device relative to the floating vessel; wherein the hoisting system is configured to be operated at least in a hoisting mode and in an active heave compensation mode; wherein the hoisting system is configured to perform an active heave compensation when operated in the active heave compensation mode and to operate without active heave compensation when operated in the hoisting mode; wherein the one or more emergency brakes are operable in a normally-energized mode including a de-energized state where the emergency brakes engage so as to inhibit motion of the connecting device relative to the floating vessel; wherein the hoisting system is further operable in a fixed-to-bottom mode; wherein the hoisting system is configured to perform an active heave compensation when operated in the fixed-to-bottom mode; and wherein the hoisting system is adapted to prevent the emergency brakes, at least temporarily, from engaging.
Abstract:
An offshore floating vessel comprising a hoisting system adapted for suspending a load attached to a connecting device of the floating vessel and for raising or lowering a load connected to the connecting device from the floating vessel to or from the sea floor; the hoisting system comprising a drive for moving the connecting device and one or more emergency brakes configured to inhibit motion of the connecting device relative to the floating vessel; wherein the hoisting system is configured to be operated at least in a hoisting mode and in an active heave compensation mode; wherein the hoisting system is configured to perform an active heave compensation when operated in the active heave compensation mode and to operate without active heave compensation when operated in the hoisting mode; wherein the one or more emergency brakes are operable in a normally-energized mode including a de-energized state where the emergency brakes engage so as to inhibit motion of the connecting device relative to the floating vessel; wherein the hoisting system is further operable in a fixed-to-bottom mode; wherein the hoisting system is configured to perform an active heave compensation when operated in the fixed-to-bottom mode; and wherein the hoisting system is adapted to prevent the emergency brakes, at least temporarily, from engaging.
Abstract:
Device (10) for placing components of a structure, in particular a wind turbine comprising hoisting means placed on a surface, a boom (6) of which is provided with a hoisting cable with attaching means for a component for placing, wherein a lifting plane is defined by the boom (6) and the free-hanging hoisting cable (7). The boom comprises a guide device (10) for the attaching means (, wherein the guide device (10) is connected to the boom (6) by means of a displacing device (8) displaceable along a longitudinal axis of the boom (6). The guide device (10) is configured to limit movement of the attaching means in a direction running transversely of the lifting plane, and further comprises a catching construction (30) configured to receive and displace the attaching means parallel to the lifting plane between a position in the vicinity of the boom (6) and a position further removed from the boom (6) and/or vice versa. The invention likewise relates to a method which makes use of the invented device.
Abstract:
A method of overboarding and lowering a load from a vessel comprises using a vessel- mounted crane to lift the load from a deck of the vessel, to move the load off the deck into an outboard over-water position and to lower the load from the outboard position into the water. The method further comprises placing at least one guide member acting in compression between the load and an upstanding supporting structure of the crane to restrain horizontal movement of the load relative to a boom of the crane; and lowering the guide member to continue restraining horizontal movement of the load while lowering the load from the outboard position into the water. A related guide apparatus comprises at least one guide member that is movably connected to a mount for movement relative to the mount around and parallel to a slewing axis of the crane.