Liebherr Werk Nenzing GmbH

Nenzing, Austria

Liebherr Werk Nenzing GmbH

Nenzing, Austria

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Patent
Liebherr Werk Nenzing GmbH | Date: 2014-12-23

The present disclosure relates to a work machine, in particular to a cable-operated excavator, for dragline bucket operation, comprising a dragline bucket taken up by a hoist rope, wherein the attachment can be retracted by means of 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.


Patent
Liebherr Werk Nenzing GmbH | Date: 2016-01-27

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.


Patent
Liebherr Werk Nenzing GmbH | Date: 2014-11-24

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.


Patent
Liebherr Werk Nenzing GmbH | Date: 2014-03-18

The present disclosure relates to a holding device for storing holding rods on a crane, with at least two holders, at least one securing piece and at least one lock, wherein the at least two holders comprise at least one toothed connecting surface each and at least four lead-throughs each, at least one of which each is designed as oblong hole. According to the present disclosure, the at least two holders are connectable with each other via a connector through the one oblong hole each and are connectable with the crane through at least one further lead-through each, wherein the at least two holders together comprise a common U-shaped deposition region for accommodating and horizontally fixing holding rods, and wherein the holding rods are vertically fixable by means of the at least one securing piece and the at least one lock inside the U-shaped deposition region.


Patent
Liebherr Werk Nenzing GmbH | Date: 2016-06-21

The present invention relates to a method for controlling a vibrating pile driver when driving a pile element (4) into a ground (6), wherein the vibrating pile driver includes a vibration unit (2) connected with the same and is attached to a carrier machine (5, 1), the method comprising the following steps: detecting at least one first status parameter of the carrier machine (5, 1) and detecting at least one second status parameter of the vibration unit (2). The method is characterized in that with reference to the at least one first status parameter and the at least one second status parameter a statistical ground model is generated, and individual operating parameters of the carrier machine (5, 1) and the vibration unit (2) are adapted to the statistical ground model, in order to optimize the energy consumption and/or an advance rate when driving in the pile element (4).


Patent
Liebherr Werk Nenzing GmbH | Date: 2015-12-09

This invention 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 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.


Patent
Liebherr Werk Nenzing GmbH | Date: 2015-01-07

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.


Patent
Liebherr Werk Nenzing GmbH | Date: 2015-06-02

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.


Patent
Liebherr Werk Nenzing GmbH | Date: 2013-02-27

The present invention relates to a crane control apparatus for a crane where a load (10) is suspended on a crane cable (20) from a cable suspension point of the crane, comprising an observer for estimating at least the position and/or velocity of the load (10) 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.


Patent
Liebherr Werk Nenzing GmbH | Date: 2014-07-02

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.

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