Provided is an electric winch apparatus capable of preventing irregular winding of a wire rope caused by landing of a hoisted-down suspended load. The electric winch apparatus includes a winch drum (5) around which a wire rope (2) is wound, an electric motor (8) which rotates the winch drum (5), an operation lever (13a), a measurement unit (18) which measures a tension index value corresponding to a tension in the wire rope (2), and a controller (12) which controls motion of the electric motor (8). The controller (12) stops motion of the electric motor (8) when an operation in a lowering operation direction is applied the operation lever (13a) and a tension average value as an average value of a tension in the wire rope (2) becomes less than or equal to a predetermined tension reference value, the average value of the tension corresponding to an average value of the tension index value in a predetermined period.

To accurately present guide information which expresses the shape and height of a hoisting load and an object located near the hoisting load. A guide information display device is equipped with: a data acquisition unit provided with a camera for capturing an image of a hoisting load region which includes at least a hoisting load and the ground surface below the hoisting load from above the hoisting load, and a laser scanner for obtaining a data point group in the hoisting load region; a data processing unit for estimating the top surface of the hoisting weight, the ground surface, and the top surfaces of objects, on the basis of the obtained data point group, and generating guide frames which surround the top surfaces of the hoisting weight and objects; and a data display unit which displays guide information obtained by overlapping the generated guide frames and the captured image with one another.

A control system for a quay crane a mounting platform position acquisition device, a land-side position acquisition device, a transportation vehicle position acquisition device, and a control device. The control system 30 is configured such that, when the control device predicts that a standby time will occur for a land-side cargo handling device based on a vehicle stop position, a current position of a relay mounting platform, a current position of the land-side cargo handling device, and a current position of an in-terminal transportation vehicle, the control device performs control that moves the relay mounting platform to a relay position which equalizes an actual land-side cycle time for the land-side cargo handling device including the standby time and a sea-side cycle time for a sea-side cargo handling device with each other.

Implementations of an automated cargo transfer system are provided. The automated cargo transfer system may be used to load cargo onto, and unload cargo from, the deck of a ship. In some implementations, the automated cargo transfer system comprises: a deck section for the ship; at least one cargo lifting device comprised of a base portion and a crane coupling; a crane hook system configured to interface with the crane coupling and thereby used to reposition a cargo lifting device, and its cargo; and a crane automation system configured to operate a crane equipped with the crane hook system and thereby load cargo onto, or unload cargo from, the deck section of the system. Wherein the deck section is configured so that one or more cargo lifting devices can be removably secured thereon.

A driver assistance system (2) for a vehicle (4) provided with a crane (6) for loading or unloading objects (8), the system comprises: a control unit (10) configured to generate a presentation signal (12) to be applied to a display unit (14), an object detecting device (16) configured to capture images of the vehicle and/or of the environment around the vehicle, and configured to generate an image data signal (18) comprising data representing captured images, and to apply said signal (18) to said control unit (10). The control unit (10) is configured to:determine a three dimensional, 3D, representation of at least one object, being a part of the vehicle and/or being at least one object (8) in the environment around the vehicle, based upon images captured by said object detecting device (16),determine a 3D representation of the environment around the vehicle,determine a predetermined alert condition measure related to said determined 3D representations, wherein if said alert condition measure fulfils at least one of a set of predetermined alert criteria, the control unit is configured initiate at least one responsive activity of a set of predetermined responsive activities.

A crane calculates the resonance frequency of the fluctuation of a suspended load determined from the hanging length of a main wire rope or a sub wire rope, generates a control signal for actuators, in accordance with the operation of a turning operation tool, a hoisting operation tool and the like, and generates a filtering control signal for the actuators in which a frequency component in any frequency range has been attenuated from the control signal at any ratio in reference to the resonance frequency. When the actuators are controlled by the operation of the respective operation tool and when the actuators are controlled regardless of the operation of the respective operation tool, the frequency range to be attenuated and the attenuation ratio are switched to different settings.

A crane includes an image acquisition system arranged to be raised and lowered by a lifting device for acquisition of a region of a crane environment. The image acquisition system is arranged on a jib that extends straight, of the lifting device. The image acquisition system is moveable upwardly by an extension of the jib from a lift column and is lowerable by retraction of the jib into the lift column into a transport position in which the jib is disposed substantially completely in the lift column and the image acquisition system is moved towards the lift column. The image acquisition system is arranged on a tip of the jib forming a highest point of the jib.

A method for securing a lifting movement of a load mechanically coupled to a hook of a lifting device by flexible links, wherein the flexible links can be, when the load is placed on the ground, either in a stretched state or in a relaxed state. The method includes detecting an initiation of a transitional phase between an initial instant when the load is placed on the ground and a final instant when the load is suspended in the air; and emitting a detection signal of a proscribed lifting situation, if the flexible links are, at least at an instant of the transitional phase, in the relaxed state.

A system and method of this disclosure control an on/off state of a power take-off by monitoring the power demand of a fluid power circuit that includes the power take-off and a piece of equipment connected to the power take-off. The power demand may be indicated by a pressure or temperature of a fluid power circuit, by a motion of the equipment or its hand-held controller, or by an engine torque of an engine driving the power take-off. When the equipment transitions between an off state and an on state, the controller automatically engages the power take-off. When the equipment is in the on-state for a predetermined amount of time and the power demand is at or below a predetermined threshold during the predetermined amount of timethereby indicating idle time or an inactive state of the equipmentthe controller automatically disengages the power take-off.

An output-torque estimation unit obtains a value of a current input to a motor, from a power converter, and calculates an estimated output torque value which is an estimated value of output torque of the motor, from the obtained value of the current. A load estimation unit estimates a load value of a hanging cargo based on the estimated output torque value which is calculated by the output-torque estimation unit, a speed reduction ratio of a speed reducer, an effective radius of a winch drum, and the winding number which is set by the number setting unit.