A crane, in particular a mobile crane, includes a crane jib which can be moved about a substantially horizontal luffing axis, and a tensioning device for the crane jib. The tensioning device includes two pendants which run from the jib tip to the jib base of the crane jib and tensioning posts each tensioning a respective one of the pendants relative to the crane jib in a triangular configuration. In order to operate the crane, a luffing angle of the crane jib about the luffing axis is measured or recorded, and a spread angle between the tensioning posts while the crane jib is being used is modified depending on the luffing angle.

A crane, in particular a mobile crane, includes a crane jib which can be moved about a substantially horizontal luffing axis, and a tensioning device for the crane jib. The tensioning device includes two pendants which run from the jib tip to the jib base of the crane jib and tensioning posts each tensioning a respective one of the pendants relative to the crane jib in a triangular configuration. In order to operate the crane, a luffing angle of the crane jib about the luffing axis is measured or recorded, and a spread angle between the tensioning posts while the crane jib is being used is modified depending on the luffing angle.

An overhead bridge crane detection system comprising a lidar sensor in communication with a controller, wherein the lidar sensor and the controller are located in a housing and the housing has a means for removable attachment to an overhead bridge crane or to maintenance equipment.

An overhead bridge crane detection system comprising a lidar sensor in communication with a controller, wherein the lidar sensor and the controller are located in a housing and the housing has a means for removable attachment to an overhead bridge crane or to maintenance equipment.

There is provided a method for controlling a crane, with which the position of a hook is automatically adjusted before lift-off, where a freely-derricking telescopic boom is provided to a swivel base, a main hook is suspended with a main wire rope from a distal end section of the telescopic boom, and a suspended load is suspended on a main hook with slinging wire ropes, wherein post-slinging lift-off is preceded by a hook position adjustment control involving repeating: a first process where the control device controls so as to reel in the main wire rope to a position where the main wire rope is tensed; and a second process where the control device controls so as to move the distal end section of the telescopic boom in the same direction of a horizontal direction component of the movement of the main hook in the first process.

There is provided a method for controlling a crane, with which the position of a hook is automatically adjusted before lift-off, where a freely-derricking telescopic boom is provided to a swivel base, a main hook is suspended with a main wire rope from a distal end section of the telescopic boom, and a suspended load is suspended on a main hook with slinging wire ropes, wherein post-slinging lift-off is preceded by a hook position adjustment control involving repeating: a first process where the control device controls so as to reel in the main wire rope to a position where the main wire rope is tensed; and a second process where the control device controls so as to move the distal end section of the telescopic boom in the same direction of a horizontal direction component of the movement of the main hook in the first process.

In the disclosed solution, a boom assembly (14) of a work machine (1) is controlled by tip control. In tip control, a control command is given to a tip of a boom assembly (14), converted into control commands for individual actuators of the boom assembly (14). In the disclosed solution, a variable related to a load and its position at the tip of the boom assembly (14) is defined, and the variable in question related to the load and its position at the tip of the boom assembly (14) is taken into account in the control command for the actuator.

It is provided a container crane including: a spreader configured to controllably attach to a container; a container trolley to which the spreader is attached via cables, the container trolley being provided on an upper part of the container crane and being horizontally movable along a first direction; a first sensor arrangement mounted on the container trolley, the first sensor arrangement being usable to determine a position of the container; a second sensor arrangement being usable to determine a position of a target; and at least one reference marker provided fixed, in at least two dimensions, to a horizontal support provided along the first direction between vertical structures of the container crane, the at least one reference marker being provided vertically lower than the first sensor arrangement and the at least one reference marker being detectable by the first sensor arrangement.

It is provided a container crane including: a spreader configured to controllably attach to a container; a container trolley to which the spreader is attached via cables, the container trolley being provided on an upper part of the container crane and being horizontally movable along a first direction; a first sensor arrangement mounted on the container trolley, the first sensor arrangement being usable to determine a position of the container; a second sensor arrangement being usable to determine a position of a target; and at least one reference marker provided fixed, in at least two dimensions, to a horizontal support provided along the first direction between vertical structures of the container crane, the at least one reference marker being provided vertically lower than the first sensor arrangement and the at least one reference marker being detectable by the first sensor arrangement.

A tension setting system for a remote setting of a tension in a transfer cable ensuring a displacement of a transfer carriage along a jib of a crane, including a winch equipped with a motor cooperating with the cable so as to ensure a displacement of the carriage, a pilot unit connected to the motor to pilot a displacement of the carriage, and a setting mechanical device mounted on the carriage and adapted to be actuated by the action of a displacement of the carriage. The setting mechanical device is coupled to the cable and configurable between a working configuration in which the mechanical device stands still irrespective of the displacement of the carriage and results in a holding of the tension in the cable, and a detent configuration in which, by the action of a displacement of the carriage piloted by the pilot unit according to a first sequence of reciprocating displacement, the mechanical device results in a release of the tension in the cable.