Manitowoc Crane Group France

François Lemire

Nicolas Larmonier

Vincent Veillerot

Bruno Roni-Damond

Florent Mourin

Olivier Gollion

Vincent Degeorge

Bruno Roni-damond

Régis Carre

Arnaud Avril

A crane drive method is provided for selecting and applying a preferential load curve adapted to a work configuration of a crane having a mast supporting a luffing jib including at least one jib structural element. The method includes an inclination measurement step implementing a measurement of an actual inclination of the jib structural element with respect to a reference axis in the work configuration, a selection step implementing an automated selection of the preferential load curve according to the actual inclination of the jib structural element, the preferential load curve selected from among a plurality of load curves stored in a memory and calculated beforehand for several inclinations of the jib structural element, and a drive step implementing an application of the preferential load curve for maneuvers of lifting and moving a load along the luffing jib in the work configuration of the crane.

Crane drive method for selecting and applying a preferential load curve according to the inclination of a jib structural element

A method for securing an angular position of a crane jib displaceable in lifting and in lowering by a winch integrating a motor driving a drum on which is wound a rope and secured to a platen provided with arcuate oblong locking holes, the method including measuring a speed parameter representative of an angular speed of the jib, controlling the motor to displace the jib with a limitation of the speed parameter to a first maximum value and a limitation of a motor torque to a first limit value, until reaching an angular position in which a lock is aligned with and locked into the locking hole, and controlling the motor to displace the jib in lowering with a limitation of the speed parameter to a second maximum value and a limitation of the motor torque to a second limit value, until the speed parameter is null for a predetermined time period to stop the motor.

Method for securing a tilting jib crane for securing an angular position of a tilting jib

A self-erecting crane includes a mast supporting a foldable jib having jib elements articulated together, configurable between a transport configuration and a work configuration. The crane also includes a motor-driven folding/unfolding system for performing configuration change operations implementing kinematics of folding and unfolding the jib, and a control/command system connected to the motor-driven folding/unfolding system to drive it. One or several inclinometer(s) are mounted on one or several jib element(s) to measure actual inclinations of the jib element(s) with respect to a reference axis. The control/command system is configured to drive the motor-driven folding/unfolding system according to the actual inclinations of the jib element(s) during the kinematics of folding and unfolding the jib.

Self-erecting crane with control of the configuration change operations

A lifting crane having a jib and a lifting device with double reeving configured to distribute and lift a load along the jib, wherein the lifting device is reversibly configurable between two reeving configurations including a single reeving configuration with two lifting strands and a double reeving configuration with four lifting strands. The lifting device includes a reeving change system for performing a reeving change between the single reeving configuration and the double reeving configuration, and vice versa. The lifting crane further includes a system for automated determination of the reeving configured to automatically determine the reeving configuration between the single reeving configuration and the double reeving configuration.

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Soucieu en Jarrest, France

François Lemire