A method for controlling a boom of a crane includes saving, in a memory, data representing a maximum horizontal working distance for a load on a hook of a boom, saving, in the memory, boom data representing the position of the boom, calculating a minimum vector between the position of the hook and the maximum horizontal working distance, and controlling, by the computing device, movement of the boom to prevent the vector from reaching a zero magnitude.

Provided are embodiments of a remote crane system including a remote controlled crane system and a remote crane control center (RCCC). The remote controlled crane system adapted to operate based on local control commands, send, to the RCCC via a communication network, crane operational data corresponding to operation of the remote controlled crane system, and receive, from the RCCC via the communication network, remote control commands, and operate based on the remote control commands. The RCCC including remote crane controls and a remote crane operator interface, and being adapted to receive, from the crane system via the communication network, the crane operational data, and present, via the remote crane operator interface, crane operational information corresponding to the crane operational data, receive, via the remote crane controls, remote control commands and send, to the crane controller via the communication network, crane remote control data including the remote control commands.

Personnel working at elevated positions use safety lines to prevent falls. Equipment being used in proximity to the personnel may interfere with the safety lines presenting a potential hazard. A fall protection monitor provides an automated and wireless sensor system for avoiding interactions between equipment and safety lines. The fall-protection monitor includes a first sensor for monitoring whether a safety line is in operation. A second sensor monitors a location of a moveable device being used in the vicinity of the safety line. A controller determines the location of the moveable device and whether the safety line is in operation. The controller prevents movement of the moveable device within a predetermined distance from an operational safety line.

A method for controlling operation of a wood-handling device in a work machine. The wood-handling device is attached through a rotation device to an end of a set of booms of the work machine to create a desired orientation of the wood-handling device for the operation. The orientation of the wood-handling device using the rotation device is tied on the basis of the operation to be performed using the set of booms. The orientation of the wood-handling device is tied to the position of the end of the set of booms. The position of the end of the set of booms is defined while performing the operation, on the basis of the position of the end of the set of booms. The wood-handling device is oriented using the rotation device, according to the said tie.

A method for controlling operation of a wood-handling device in a work machine. The wood-handling device is attached through a rotation device to an end of a set of booms of the work machine to create a desired orientation of the wood-handling device for the operation. The orientation of the wood-handling device using the rotation device is tied on the basis of the operation to be performed using the set of booms. The orientation of the wood-handling device is tied to the position of the end of the set of booms. The position of the end of the set of booms is defined while performing the operation, on the basis of the position of the end of the set of booms. The wood-handling device is oriented using the rotation device, according to the said tie.

The present disclosure provides a method and a system for controlling operation of a crane, and a crane, relating to the technical field of engineering machinery. The method includes: scanning dynamically, by a 3D imaging device, a plurality of objects within an operating range of the crane to obtain 3D spatial information of each of the plurality of objects, wherein the plurality of objects comprises the crane and an obstacle, the 3D spatial information comprises 3D spatial coordinates; determining a distance from the obstacle to a preset position of the crane based on the 3D spatial coordinates of the crane and the obstacle; judging whether the distance from the obstacle to the preset position is less than a preset distance corresponding to the preset position; and performing an alarm if the distance from the obstacle to the preset position is less than the preset distance corresponding to the preset position.

Personnel working at elevated positions use safety lines to prevent falls. Equipment being used in proximity to the personnel may interfere with the safety lines presenting a potential hazard. A fall protection monitor provides an automated and wireless sensor system for avoiding interactions between equipment and safety lines. The fall-protection monitor includes a first sensor for monitoring whether a safety line is in operation. A second sensor monitors a location of a moveable device being used in the vicinity of the safety line. A controller determines the location of the moveable device and whether the safety line is in operation. The controller prevents movement of the moveable device within a predetermined distance from an operational safety line.

A safety system (2) for a working vehicle (4) comprising a working equipment (6), e.g. a crane or a working tool, the safety system (2) comprises a control unit (8), a controller (10), e.g. a remote controller, configured to control said working equipment (6), and a display unit (12). The control unit is configured to: define a set of three-dimensional safety spaces (14) in relation to the vehicle (4), present at least one safety space (14) from said set of safety spaces on said display unit (12), wherein said at least one safety space being presented overlaid on an image (18) of at least a part of the working vehicle (4) and working equipment (6), receive a first input signal (20) comprising space position parameters representing at least one chosen safety space among the presented safety spaces, and to designate each at least one chosen safety space as an active safety space (14A), and to receive a second input signal (22) comprising a safety space state command either allowing or preventing said working equipment to be moved into said at least one active safety space (14A), and to apply a state command signal (24) to said controller (10) to control said working equipment (6) in dependence of said safety space state command.

A transport system includes a plurality of transport vehicles. Each transport vehicle includes: a distance detecting portion configured to detect a distance to a preceding transport vehicle, which is another transport vehicle traveling in front of the corresponding transport vehicle; a signal transmitting portion for transmitting a start signal to a subsequent transport vehicle, which is another transport vehicle traveling behind the corresponding transport vehicle; and a signal receiving portion for receiving the start signal that is transmitted from the preceding transport vehicle. Each transport vehicle is configured to transmit, when starting to travel, the start signal using the signal transmitting portion, to start to travel upon receiving the start signal from the preceding transport vehicle using the signal receiving portion, and to stop when the distance to the preceding transport vehicle that is detected by the distance detecting portion is equal to or smaller than a set distance.

A hydraulic crane comprising: a rotatable column (7); a crane boom system comprising a first crane boom (11) connected to the column; and an electronic control device for controlling the movement of the column and the crane boom system on of the basis of control signals from a manoeuvring unit and a calculation model for boom tip control. The control device is configured to switch from a first control mode into a second control mode when the first crane boom is about to interfere with an obstacle. In the first control mode, the control device controls the crane boom movements in accordance with an ordinary control strategy. In the second control mode, the control device makes the load suspension point (P) of the crane boom system move along the trajectory defined by said control signals while controlling the crane boom movements in accordance with an auxiliary control strategy in which the first crane boom is prevented from interfering with the obstacle.