A system and a method for automatically regulating the tensions of the guide ropes of a flexible cable suspension platform. The system includes a guide rope regulator mounted on a flexible cable suspension platform, a hydraulic pump station arranged on the flexible cable suspension platform, and a hydraulic system associated to the hydraulic pump station. The guide rope regulator automatically regulates the tensions of the guide ropes to enable the tensions of all the guide ropes to be consistent, so as to further ensure that the flexible cable suspension platform is in a level condition. The guide rope regulator also can measure the tension states of the guide ropes conveniently so as to ensure that the guide ropes have enough tensions to efficiently limit the swing amplitude of a lilting container. The system is simple, and convenient to operate, and has a good automatic regulating effect.

An offshore transfer system includes an arm construction with a primary measurement system to measure and compensate for relative movement of an element relative to an external reference when the element is supported by the arm tip, as well as a secondary measurement system to measure and compensate for relative movement of the arm tip relative to the element when the element is put down and no longer supported by the arm tip.

An offshore transfer system includes an arm construction with a primary measurement system to measure and compensate for relative movement of an element relative to an external reference when the element is supported by the arm tip, as well as a secondary measurement system to measure and compensate for relative movement of the arm tip relative to the element when the element is put down and no longer supported by the arm tip.

A swivel device with rotation damping, adapted to rotationally couple a hoist cable to a hoist hook, the device including: a first disc fixedly mounted on a central axle and adapted to be operationally coupled to a distal end of the cable by a non-rotating coupling; a second disc rotationally mounted on the central axle and spaced apart from the first disc, the second disc adapted to be operationally coupled to the hoist hook by a non-rotating coupling; a first set of magnets mounted on the first disc; and a second set of magnets mounted on the second disc, magnetic fields of the first set of magnets interacting with magnetic fields of the second set of magnets to damp rotation of the second disc about the central axle.

A swivel device with rotation damping, adapted to rotationally couple a hoist cable to a hoist hook, the device including: a first disc fixedly mounted on a central axle and adapted to be operationally coupled to a distal end of the cable by a non-rotating coupling; a second disc rotationally mounted on the central axle and spaced apart from the first disc, the second disc adapted to be operationally coupled to the hoist hook by a non-rotating coupling; a first set of magnets mounted on the first disc; and a second set of magnets mounted on the second disc, magnetic fields of the first set of magnets interacting with magnetic fields of the second set of magnets to damp rotation of the second disc about the central axle.

The present disclosure relates to a crane controller for a crane which includes a hoisting gear for lifting a load hanging on a cable, with an active heave compensation which by actuating the hoisting gear at least partly compensates the movement of the cable suspension point and/or of a load deposition point due to the heave, and an operator control which actuates the hoisting gear with reference to specifications of the operator, wherein the division of at least one kinematically constrained quantity of the hoisting gear is adjustable between heave compensation and operator control.

The present disclosure relates to a crane controller for a crane which includes a hoisting gear for lifting a load hanging on a cable, with an active heave compensation which by actuating the hoisting gear at least partly compensates the movement of the cable suspension point and/or of a load deposition point due to the heave, and an operator control which actuates the hoisting gear with reference to specifications of the operator, wherein the division of at least one kinematically constrained quantity of the hoisting gear is adjustable between heave compensation and operator control.

A light-based measurement system is capable of directing a light beam to a cooperative target used in conjunction with a cable robot to accurately control the position of the end effector within a large volume working environment defined by a single coordinate system. By measuring the end effector while the device is in operation, the cable robot control system can be adjusted in real time to correct for errors that are introduced through the design of the robot itself providing accuracy in the tens or hundreds of micron range. A coordination processor runs control software that communicates with both the laser tracker and the cable robot. An action plan file is loaded by the software that defines the coordinate system of the working volume, the locations where actions need to be performed by the cable robot, and the actions to be taken.

Provided is a safety lighting system for an overhead crane comprising a laser generator capable of generating a laser signal; and a crane control system having a programmable logic circuit; wherein the laser generator is integrated with the crane control system; and wherein the laser generator is operable to project a laser signal onto a surface corresponding to the position of the crane or crane components and a method of using the safety lighting system to determine when an object has crossed into a designated safety zone.

Provided is a safety lighting system for an overhead crane comprising a laser generator capable of generating a laser signal; and a crane control system having a programmable logic circuit; wherein the laser generator is integrated with the crane control system; and wherein the laser generator is operable to project a laser signal onto a surface corresponding to the position of the crane or crane components and a method of using the safety lighting system to determine when an object has crossed into a designated safety zone.