Patents Assigned to Liebherr-Werk Nenzing GmbH
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Patent number: 10329731Abstract: The invention relates to a method of operating a mobile work machine with a ground pressure limitation and to a corresponding work machine. A maximum permitted ground pressure is compared with an actually present ground pressure.Type: GrantFiled: February 26, 2016Date of Patent: June 25, 2019Assignee: Liebherr-Werk Nenzing GmbHInventor: Alfred Koller
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Patent number: 10232578Abstract: A method of compacting soil via a base machine, the base machine having ram material provided at at least one cable and having a regulation/control apparatus, includes raising the ram material from the land area to be compacted, with a zero point being stored at which no slackline is present. The method further includes raising the ram material to a lift height, carrying out a compaction procedure by dropping the ram material from a drop height onto the land area to be compacted, again raising the ram material from the land area to be compacted, with a further zero point being stored at which no slackline is present, determining and storing a compaction progress, and repeating the previous steps until the compaction progresses of each of a predefined number of consecutive compaction procedures are smaller than or equal to a predefined minimum progress.Type: GrantFiled: July 18, 2017Date of Patent: March 19, 2019Assignee: Liebherr-Werk Nenzing GmbHInventors: Patrick Jussel, Lukas Fink
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Patent number: 10138094Abstract: The present disclosure relates to a method for the control and/or the data acquisition of a crane, wherein at least one measuring device at the crane supplies one or more measured values for determining the position of at least one load lifting device, in particular a crane hook, wherein a calculation of the position of the load lifting device is effected on the basis of the one or more measured values of at least one measuring device and one or more data characterizing the stiffness of the crane. The present disclosure also relates to a crane controller and a crane for carrying out the method according to the present disclosure.Type: GrantFiled: February 28, 2013Date of Patent: November 27, 2018Assignee: Liebherr-Werk Nenzing GmbHInventors: Johannes Karl Eberharter, Klaus Schneider
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Patent number: 10124994Abstract: The present invention relates to a ballast apparatus for attaching to the rear of a crane superstructure, in particular of a crawler-mounted crane, having a base plate and a plurality of stackable ballast plates, wherein at least two carrier plates for receiving stacked ballast plates are connected to the base plate in an articulated manner pivotable about vertical pivot axes.Type: GrantFiled: January 27, 2016Date of Patent: November 13, 2018Assignee: Liebherr-Werk Nenzing GmbHInventor: Richard Torghele
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Patent number: 10113295Abstract: A work machine, in particular a cable-operated excavator, for dragline bucket operation, a dragline bucket taken up by a hoist rope, wherein the attachment can be retracted by at least one dragline for carrying out the dragging movement and a dragline guide for guiding the dragline is arranged at the work machine, wherein the dragline guide is designed as movable, in particular as linearly movable.Type: GrantFiled: December 23, 2014Date of Patent: October 30, 2018Assignee: Liebherr-Werk Nenzing GmbHInventors: Johann Zimmermann, Tizian Lamprecht
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Patent number: 10099903Abstract: A method for controlling the fill volume of a grapple, such as a bulk-material crane grapple which includes at least one hoist-and-closure unit, may include adjusting the fill volume of the grapple is during the grapple closure process by adjusting/controlling the grapple hoist height. The grapple hoist speed and/or grapple hoist height may be the controlling parameter for the adjustment of the fill volume of the grapple.Type: GrantFiled: November 24, 2014Date of Patent: October 16, 2018Assignee: Liebherr-Werk Nenzing GmbHInventor: Andreas Schwarzhans
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Patent number: 10046953Abstract: The present invention comprises a method for the control of a drive of a crane, in particular of a slewing gear and/or of a luffing mechanism, wherein a desired movement of the boom tip serves as an input value on the basis of which a control parameter for the control of the drive is calculated, characterized in that the oscillation dynamics of the system comprising the drive and the crane structure are taken into account in the calculation of the control parameter to reduce natural oscillations. The present invention furthermore comprises a method for the control of a hoisting gear of a crane, wherein a desired hoisting movement of the load serves as an input value on the basis of which a control parameter for the control of the drive is calculated.Type: GrantFiled: July 8, 2010Date of Patent: August 14, 2018Assignee: LIEBHERR-WERK NENZING GMBHInventors: Klaus Schneider, Oliver Sawodny, Sebastian Kuechler
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Patent number: 9878885Abstract: The present invention shows a crane controller for the semi-automatic control of a rotary crane, the crane comprising at least a slewing actuator for creating a slewing motion of the crane and/or a luffing actuator for creating a luffing motion of the crane, the crane controller comprising an input unit which can be operated by a operator to provide a desired slewing speed and/or a desired luffing speed as an operator input and a model-predictive reference trajectory planning module comprising an optimization unit for calculating a reference trajectory that obeys the system dynamics and follows the operator input, and a feedforward-controller using the reference trajectory for controlling the slewing actuator and/or the luffing actuator. Further, the optimization unit takes into account the deflection of the rope in the tangential and/or radial direction when solving the optimization problem that provides the reference trajectory.Type: GrantFiled: July 2, 2014Date of Patent: January 30, 2018Assignee: LIEBHERR-WERK NENZING GMBHInventors: Klaus Scheider, Oliver Sawodny, Ulf Schaper, Eckhard Arnold
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Patent number: 9790061Abstract: 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.Type: GrantFiled: March 7, 2013Date of Patent: October 17, 2017Assignee: Liebherr-Werk Nenzing GmbHInventors: Klaus Schneider, Sebastian Kuechler, Oliver Sawodny, Johannes Karl Eberharter
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Patent number: 9567193Abstract: The present invention comprises a method for controlling a load-moving device by at least two persons, with the following steps: controlling the movement of the load-moving device by a first person; handing over control over the movement of the load-moving device to a second person; controlling the load-moving device by the second person. The present invention furthermore comprises a corresponding controller of a load-moving device with a first, in particular permanently installed operating unit and a mobile operating unit for controlling the movement of the load-moving device for the safe and efficient performance of the method.Type: GrantFiled: April 18, 2008Date of Patent: February 14, 2017Assignee: Liebherr-Werk Nenzing GmbHInventors: Josef Kaspar Schmid, Manfred Schapler
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Patent number: 9556006Abstract: The present disclosure relates to a method for controlling the orientation of a crane load, wherein a manipulator for manipulating the load is connected by a rotator unit to a hook suspended on ropes and the skew angle ?L of the load is controlled by a control unit of the crane, characterized in that the control unit is an adaptive control unit wherein an estimated system state of the crane system is determined by use of a nonlinear model describing the skew dynamics during operation.Type: GrantFiled: June 2, 2015Date of Patent: January 31, 2017Assignee: Liebherr-Werk Nenzing GmbHInventors: Klaus Schneider, Oliver Sawodny, Ulf Schaper, Eckhard Arnold
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Patent number: 9266700Abstract: The present disclosure shows 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 a load deposition point due to the heave, wherein the heave compensation takes account of at least one constraint of the hoisting gear when calculating the actuation of the hoisting gear.Type: GrantFiled: March 7, 2013Date of Patent: February 23, 2016Assignee: Liebherr-Werk Nenzing GmbHInventors: Klaus Schneider, Eckard Arnold, Sebastian Kuechler, Oliver Sawodny
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Patent number: 9248997Abstract: The present disclosure relates to a hydraulic system for a crane with at least one hydraulic circuit, which comprises at least one hydraulic consumer, and a constant pressure network, wherein the at least one hydraulic circuit is coupled with the constant pressure network via at least one pressure reducer, whereby a higher volume flow with low pressure as compared to the constant pressure network can be generated in the hydraulic circuit.Type: GrantFiled: February 26, 2013Date of Patent: February 2, 2016Assignee: Liebherr-Werk Nenzing GmbHInventors: Christof Gassner, Markus Schwarzhans
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Patent number: 9212031Abstract: The present invention relates to a crane control apparatus for a crane where a load is suspended on a crane cable from a cable suspension point of the crane, comprising an observer for estimating at least the position and/or velocity of the load from at least one sensor input of a first sensor by using a physical model of the load suspended on the crane cable, whereby the physical model of the observer uses the load position and/or the load velocity as a state variable.Type: GrantFiled: August 27, 2012Date of Patent: December 15, 2015Assignee: Liebherr-Werk Nenzing GmbHInventors: Klaus Schneider, Oliver Sawodny, Conrad Sagert, Ulf Schaper
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Patent number: 9187295Abstract: The disclosure includes a safety method for the lifting and/or transporting of a common load using a plurality of cranes, comprising the steps: determining of possible damage incidents for movement vectors of the cranes; activation of an alarm function if predetermined movement vectors result in damage incidents and/or limitation of the movement vectors used for the control of the cranes to those movement vectors which do not result in damage incidents in any of the cranes. Furthermore, a corresponding control method as well as a safety system and a control system are provided.Type: GrantFiled: August 31, 2007Date of Patent: November 17, 2015Assignee: Liebherr-Werk Nenzing GmbHInventors: Klaus Schneider, Martin Rajek
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Patent number: D756057Type: GrantFiled: March 4, 2015Date of Patent: May 10, 2016Assignee: Liebherr-Werk Nenzing GmbHInventors: Wolfgang Nessler, Jens Woide, Walter Mietschnig
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Patent number: D758039Type: GrantFiled: March 4, 2015Date of Patent: May 31, 2016Assignee: Liebherr-Werk Nenzing GmbHInventors: Wolfgang Nessler, Jens Woide, Walter Mietschnig
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Patent number: D783220Type: GrantFiled: September 4, 2015Date of Patent: April 4, 2017Assignee: Liebherr-Werk Nenzing GmbHInventors: Sebastian Wedl, Mathias Gassner
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Patent number: D806345Type: GrantFiled: May 11, 2016Date of Patent: December 26, 2017Assignee: Liebherr-Werk Nenzing GmbHInventor: Richard Torghele
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Patent number: D843676Type: GrantFiled: March 24, 2017Date of Patent: March 19, 2019Assignee: Liebherr-Werk Nenzing GmbHInventor: Sebastian Wedl