LIEBHERR-WERK NENZING GmbH Patent applications |
Patent application number | Title | Published |
20140115002 | METHOD FOR MONITORING A NUMBER OF MACHINES AND MONITORING SYSTEM - The present disclosure is related to a method for monitoring at least one event data generating machine, including a data logging device for providing event data. The method comprises transferring logged event data from at least one of the event data generating machines to a central processor, mining a multi-dimensional sequential pattern within said transferred event data wherein at least one dimensional attribute holds information indicating said event data generating machine or the at least one event data generating machine property, and matching said mined multi-dimensional sequential pattern with patterns stored in a central pattern database. | 04-24-2014 |
20130245817 | CRANE CONTROLLER WITH DRIVE CONSTRAINT - 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. | 09-19-2013 |
20130245816 | CRANE CONTROLLER WITH CABLE FORCE MODE - The present disclosure shows a crane controller for a crane which includes a hoisting gear for lifting a load hanging on a cable, wherein the crane controller has a cable force mode in which the crane controller actuates the hoisting gear such that a setpoint of the cable force is obtained. | 09-19-2013 |
20130245815 | CRANE CONTROLLER WITH DIVISION OF A KINEMATICALLY CONSTRAINED QUANTITY OF THE HOISTING GEAR - 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. | 09-19-2013 |
20130236272 | HYDRAULIC SYSTEM AND CRANE - 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. | 09-12-2013 |
20130233820 | CRANE AND METHOD FOR CRANE CONTROL - 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. | 09-12-2013 |
20130161279 | CRANE CONTROL APPARATUS - 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. | 06-27-2013 |
20120305870 | CABLE PULLEY - The present disclosure relates to a cable pulley with a circumferentially extending groove for guiding a cable, wherein the cable pulley has a modular design and includes a wheel-shaped carrier body and a ring-shaped groove body, wherein the carrier body is at least partly made of a composite material, optionally a fiber-reinforced plastic material, and wherein the groove body circumferentially surrounds the carrier body and includes the groove. | 12-06-2012 |
20120298608 | CRANE WITH OVERLOAD SAFETY DEVICE - The present disclosure relates to a crane, in particular an offshore crane, having a slewing gear and a hydraulic slewing gear drive, wherein the slewing gear is held in its position via a holding torque applied by the hydraulic slewing gear drive, and wherein an overload safety device is provided having at least one detection means for detecting the outreach and/or the position of the crane hook and having at least one pressure relief valve, with the system pressure applied to the hydraulic slewing gear drive via at least one pressure relief valve can be regulated in dependence on the outreach and/or on the position of the crane hook. | 11-29-2012 |
20120248052 | HYDRAULIC BRAKING APPARATUS FOR A CRANE DRIVE AND CRANE - The present disclosure relates to a hydraulic braking apparatus for a crane drive for carrying out crane work, in particular a slewing gear, having at least one hydraulic stopping brake for braking the drive movement of the crane drive in an emergency situation, wherein at least one pressure regulation valve is provided for controlling at least one stopping brake to ensure a time-delayed braking torque build-up. | 10-04-2012 |
20120216609 | Method for Determining the Delivery Rate of a Liquid Conveying Device - The present disclosure relates to a method for determining the delivery rate of a liquid conveying device, in particular a concrete pump, wherein on the basis of measured values concerning the pressure of the liquid the number of the pump strokes of the concrete conveying device is determined, in particular substantially calculated, by series-connection of a plurality of filters with adaptive filter length and variable detection limits. Furthermore, the present disclosure relates to a liquid conveying device and to a construction vehicle with a liquid conveying device. | 08-30-2012 |
20120020811 | Fan Control - The present disclosure relates to a hydraulic fan control circuit for a machine, in particular for a motor vehicle, a construction machine or a lifting device, with at least one hydraulic pump and at least one hydraulic motor for driving at least one fan, wherein the hydraulic motor driving torque of at least one hydraulic motor is controllable by adjusting the absorption volume. | 01-26-2012 |
20120019056 | Chain Drive Assembly and Work Machine - The present disclosure relates to a chain drive assembly for a work machine, in particular for a crawler-mounted crane or a crawler excavator, having a drive crawler track, at least one displaceably supported sprocket wheel, in particular a guide wheel or idler wheel, and at least one tensioning device to tension the crawler track, wherein at least one abutment is provided which bounds the displacement of the displaceably supported sprocket wheel. The present disclosure further relates to a work machine, in particular to a crawler-mounted crane or a crawler excavator, having such a chain drive assembly. | 01-26-2012 |
20110315649 | Safety Device, Boom with a Safety Device and Construction Machine - The present disclosure relates to a safety device, in particular for the fall protection of persons during the inspection of a crane boom, with at least one guide directly and/or indirectly arranged on the side of the stepping plane and with at least one guiding means which is movably guidable or guided in a sliding manner in the and/or through the guide, wherein a suspension means is attachable or attached to the guiding means, by means of which at least one protective equipment is suspendable or suspended. Furthermore, the present disclosure relates to a boom with a safety device, and a construction machine. | 12-29-2011 |
20110240582 | Fall-Back Support - The present disclosure relates to a fall-back support for a luffing boom which is attached to a boom head of a crane, having at least one pressure rod which is arranged between the luffing boom and the boom head and which bounds a fall-back movement of the luffing boom, wherein the at least one pressure rod includes a fiber composite tube, in particular an aluminum tube having a reinforcement of carbon fibers. | 10-06-2011 |
20110155712 | PIPE ELEMENT WITH A TRIMMED EDGE FOR WELDING ONTO A CARRIER - The present disclosure relates to a pipe element with a trimmed edge for welding onto a carrier, wherein the trimmed edge is cut from a base tube so that the pipe element can be arranged on the surface of the carrier and welded to it along the trimmed edge, wherein the trimmed edge has a first cam with which the pipe element can be placed on the surface of the carrier. It is further provided that the trimmed edge has at least one second cam with which it can be placed on the surface of the pipe element, so that an air gap remains between the surface of the carrier and the trimmed edge in a region lying between the first cam and the second cam. | 06-30-2011 |
20110066394 | System for Determining the Load Mass of a Load Carried by a Hoist Cable of a Crane - The present disclosure relates to a system for determining the load mass of a load carried by a hoist cable of a crane, said system comprising a measurement arrangement for measuring the cable load in the hoist cable and a calculation unit for determining the load mass on the basis of the cable force, wherein the calculation unit has a compensation unit which describes and at least partly compensates the effect of the indirect determining of the load mass via the cable force in a model. | 03-17-2011 |
20110006025 | CRANE FOR HANDLING A LOAD HANGING ON A LOAD CABLE - The present invention relates to a crane for handling a load hanging on a load cable, comprising a slewing gear for rotating the crane, a luffing gear for luffing up the boom, and a hoisting gear for lowering or lifting the load hanging on the load cable, with a control unit for calculating the actuation of slewing gear, luffing gear and/or hoisting gear, wherein the calculation of the actuation commands for actuating slewing gear, luffing gear and/or hoisting gear is effected on the basis of a desired movement of the load indicated in Cartesian coordinates. | 01-13-2011 |
20110006024 | CRANE CONTROL FOR THE CONTROL OF A HOISTING GEAR OF A CRANE - The present invention relates to a crane control for the control of a hoisting gear of a crane which takes account of oscillation dynamics based on the elasticity of the hoist rope on the control of the hoisting gear and reduces them by a suitable control of the hoisting gear. | 01-13-2011 |
20110006023 | METHODS FOR CONTROLLING A DRIVE OF A CRANE - 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. | 01-13-2011 |
20100319335 | HYDRAULIC SYSTEM - The present invention relates to a hydraulic system with a feed pump for feeding hydraulic fluid, wherein the feed pump is driven by a hydraulic drive motor. The invention furthermore comprises a method for feeding hydraulic fluid into a hydraulic system via a feed pump, wherein the feed pump is driven by a hydraulic drive motor. | 12-23-2010 |
20100316451 | PILING AND DRILLING RIG WITH FOLDABLE DEFLECTION APPARATUS - The present invention relates to a piling and drilling rig having a leader, a deflection apparatus for the deflection a rope which is pivotally connected to the head of the leader in a manner pivotable between at least one transport position and at least one working position, with the deflection apparatus being rotatable about an axis standing obliquely on the axis of extent of the leader. | 12-16-2010 |
20100189541 | Device and Method for Lowering or Lifting a Load in Water - The present disclosure relates to a device for lifting and lowering a load in water, including a hoisting gear with a first hoisting rope and a storage drum with a second hoisting rope, which preferably are arranged on a floating unit. In accordance with the present disclosure, a hoisting gear frame is fastened to the first hoisting rope, whose buoyancy in water is variably adjustable. Furthermore, the present disclosure relates to a method for lifting and lowering a load in water by using such a device. | 07-29-2010 |
20090157266 | Commercial Vehicle with Control means and Method for Controlling Commercial Vehicle - The present disclosure relates to a commercial vehicle with a control unit connected with the drive of the commercial vehicle and to a method for controlling a commercial vehicle. | 06-18-2009 |