EP2925660A1 - Diagnostic de rupture de câble d'une grue - Google Patents

Diagnostic de rupture de câble d'une grue

Info

Publication number
EP2925660A1
EP2925660A1 EP13780127.0A EP13780127A EP2925660A1 EP 2925660 A1 EP2925660 A1 EP 2925660A1 EP 13780127 A EP13780127 A EP 13780127A EP 2925660 A1 EP2925660 A1 EP 2925660A1
Authority
EP
European Patent Office
Prior art keywords
cable
crane
detected
boom
control device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13780127.0A
Other languages
German (de)
English (en)
Inventor
Leo Petrak
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hirschmann Automation and Control GmbH
Original Assignee
Hirschmann Automation and Control GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hirschmann Automation and Control GmbH filed Critical Hirschmann Automation and Control GmbH
Publication of EP2925660A1 publication Critical patent/EP2925660A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • B66C13/46—Position indicators for suspended loads or for crane elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/16—Applications of indicating, registering, or weighing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/88—Safety gear
    • B66C23/90—Devices for indicating or limiting lifting moment
    • B66C23/905—Devices for indicating or limiting lifting moment electrical
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0025—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of elongated objects, e.g. pipes, masts, towers or railways

Definitions

  • the invention relates to a crane and a method for operating a crane, comprising a base part with a pivotable and telescopic boom with at least one further boom element, wherein a hosted and telescopic boom with at least one further boom element, wherein a hosted and telescopic boom is provided which has at least one cable, with which the length of the telescopic boom is detected, and a method of operating such a crane, according to the respective features of the preambles of the independent claims.
  • Cranes with pivoting, rotatable and telescopic arms which have several boom elements, as well as comparable work vehicles with variable in length work elements (so that the invention is not only on cranes with telescopic arms, but generally referred to such work vehicles) are known.
  • a base member is present, with which the crane can be brought over roads and the like to its work site.
  • a rotary part is often arranged, wherein either a cantilever is arranged on the base part or on the rotary part.
  • the boom consists of a part which is directly pivotally mounted on the base part or on the rotary part and has further boom elements.
  • LWG length-angle encoders
  • the angle of attack of the jib with respect to the base part (or the bottom) is detected and at the same time the length of the telescoped jib is detected.
  • a rope which is usually attached to the top of the last boom element, extended with and the extended length of the rope detected by the length encoder in a conventional manner. Due to the detected length and the angle of attack of the boom, these parameters can be included in a corresponding control device of the crane and taken into account during operation such that when exceeding impermissible lengths or angles of the operation of the crane is suppressed or at least a warning.
  • the length angle encoder with its elements represents a safety-relevant component, it is necessary to take measures that in the detection and transmission of the output signals of the Solnwinkelgebers, which represent the length and the angle of attack of the boom, no errors occur or that the provision of the signals is always guaranteed for the downstream control device.
  • the invention is therefore based on the object, a crane and a method for operating a crane (or generally a work machine with variable-length work elements) to provide, with the above-described disadvantages are avoided.
  • a crane or generally a work machine with variable-length work elements
  • the invention is achieved according to the invention in that a force sensor assigned to the cable is provided with which the force acting on the cable in its axial orientation is detected. This ensures that whenever the force sensor detects a predetermined force acting on the cable, the cable is still performing its function and, for example! Not torn. Should it be damaged, cracked or the like, a deviating from the predetermined range of values for a permissible force force is determined, which is discharged from the force sensor to a downstream control device.
  • This control device evaluates the force and, for example, can signal to a crane operator that safe operation of the crane is no longer possible. This can then react either manually or automatically by the control device accordingly.
  • the cable is a steel cable and / or an electrical cable.
  • the invention offers the simple possibility of retrofitting already existing length encoders with steel cables with the force sensor. For this purpose, it is only necessary to arrange the force sensor in the course of the steel cable and to ensure that its output signal is transmitted to a control device of the crane.
  • the cable is an electrical cable. By such a cable, it is possible in an advantageous manner, on the one hand to detect the boom length and at the same time to transmit signals via the electrical conductors of the electric cable.
  • the force sensor is arranged with its one end at the tip of the arm and with its other end at the end of the electric cable. Since the force sensor is thus located at the farthest point from the base part or rotary part and the control device is usually arranged in the base part or the rotary part of the crane, the signals of the force sensor can be transmitted to the control devices via the electric cable.
  • the force sensor transmits a signal acting on the cable representing signal to a control device of the crane.
  • These agents can, as already mentioned, for Example, the electric cable, which thus fulfills two functions.
  • the length of the telescopic arm is detected with it by unwinding on the length angle sensor, and at the same time the forces acting on the cable, more precisely the signals of the force sensor, are transmitted to the control device arranged further away.
  • the means may be configured as wireless transmission means, so that the output signals of the force sensor are transmitted wirelessly (for example via radio) to the control device.
  • the force acting on the cable in its axial orientation is detected with a force sensor assigned to the cable.
  • the detected force can be divided into different areas.
  • One area is such forces that act on the cable that are allowed and on the other hand are areas (especially areas below and / or above the allowable range) that are generally a problem with the cable, for example, slipping Jamming, breakage or the like.
  • the detection of the force on the cable by means of the force sensor is continuous (constantly, with an interval detection is conceivable), wherein furthermore the transmission of the output signal of the force sensor is continuous or discontinuous to the control device, and then if a transmitted Signal is missing, is recognized by the control device, a safety-critical state.
  • the force sensor is functioning properly and provides a force signal on the cable.
  • the discontinuous transmission and monitoring of the signal has the advantage that it saves energy because it is not always necessary for the signal to be transmitted and the control device does not have to constantly receive the discontinuously transmitted signals.
  • the force sensor can be designed and adapted to transmit a signal representing the force in the context of a pulse train via the cable and / or wirelessly to the control device. If this pulse train or parts of the pulse train fail, this is a signal for the control device that the transmission has not occurred properly. If a pulse sequence only lasts for a short time, it can be concluded that the transmission was only interrupted for a short time, so that no safety-critical state has yet been reached.
  • a predeterminable time threshold within which a pulse train should have been detected is absent, this is a sign of an improper transmission, so that then can be concluded on a safety-critical state.
  • the transmitted signal is evaluated by the control device and, upon leaving an uncritical region, a safety-critical state is detected by the control device.
  • a safety-critical state is detected by the control device.
  • the force acting on the cable and detected by the force sensor is within a certain predeterminable range.
  • this area is then left when the cable is broken, worn, slipped or the like, as a result of which it is advantageously provided that the transmitted signal, which represents the force acting on the cable, is evaluated by the control device.
  • the transmission of the signal takes place redundantly.
  • the redundant transmission of the signal takes place either only via the cable designed as a data cable, or only wirelessly (via two mutually independent radio links) or via the cable designed as a data cable and wirelessly.
  • For the redundant transmission of the signal via at least one radio channel are corresponding transceiver units, which are connected to the control device available, so that these transceiver units wirelessly with the control device exchange the signals.
  • 1 denotes a crane having, for example, a base part 2 (with drive for a driving operation), on which a rotary member 3 is arranged.
  • a pivotable arm 4 base arm
  • Auslegereiemente 5, 6 also only an additional boom element or more than two boom elements
  • a rope 8 (crane rope) passes over the tip of the boom element 6 to a hook 9 arranged at the end.
  • the basic part 2 is represented by a length-angle doubler 10, the structure of which is also known per se.
  • Thisjurinwinkeigeber 10 is on the one hand suitable and adapted to detect the angle of the boom 4 with respect to the Drehteii 3 and the base part 2 (not shown here). With 11, an output signal of the Conswinkelgebers 10 is designated, which is transmitted to a control device, not shown here.
  • a cable 12 is present between the Conswinkeigeber 10 and here the tip of the boom member 6.
  • This cable 12 is rolled up at fully retracted AusSegereiementen 5, 6 in the Conswinkeigeber 10 and can be rolled out during extension of the boom elements 5, 6 of a cable drum in theChinanwinkeigeber 10.
  • This process is detected in a conventional manner by the Consnwinkeigeber 10 so that the output signal 11 not only transmits the angle of attack of the boom 4 to the control device, but also the respectively set length of the boom 4 with its boom elements 5, 6th
  • the cable 12 is associated with a force sensor 13, wherein this force sensor 13 is in the embodiment of Figure 1 in the course of the cable 12 and in the end region of the boom element 6 (ie in the direction of the jib tip) is arranged.
  • this force sensor 13 is only one embodiment of a force sensor 13 and its arrangement, wherein other locations in the course of the cable 12 are conceivable.
  • the force sensor 13 according to FIG. 1 directly detects the force acting on the cable 12 in its axial direction, such force sensors also come into consideration, which detect the force acting on the cable 12 indirectly (for example, inductively).
  • two identical or different force sensors may be present under safety-relevant aspects.
  • the cable 12 is either designed in a conventional manner as a steel cable, so it is necessary in this case, the at the Jib tip recorded on the cable 12 acting force via suitable means (see Figure 2) to transmit. If the cable 12 is designed as a data cable, the force sensor 13 can be connected to the data cable in a simple manner and its signals are transmitted in the direction of the rotary member 3, so that in this case the output signal 11 also contains the force acting on the cable 12.
  • FIG. 2 shows in a schematic representation how the individual detected signals of the elements of the crane 1 can be transmitted to the control device, here denoted by 14.
  • the control device 14 of the length angle encoder 10 is connected with its Marisignai 11.
  • a base transmission device 15, a boom transmission device 16, and a hook transmission device 17 are provided.
  • Base communication device 15 is also connected to the control device 14 and adapted and configured to receive at least signals, alternatively or additionally to deliver radio signals. The same applies to the two devices 16, 17, wherein the boom transmission device
  • the forces acting on the cable 12 can be transmitted in a simple or redundant manner to the base transmission device 15 wirelessly, so that this device 15 transmits the signals of the force sensor 12 to the control device 14.
  • the parameters of the hook 9, in particular the load attached thereto are recorded and also transmitted in a particularly advantageous manner by means of the hook transmission device 17, either the device 16 or directly to the base transmission device 15, in order to also transmit it To provide control device 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Jib Cranes (AREA)
  • Control And Safety Of Cranes (AREA)
  • Communication Cables (AREA)

Abstract

L'invention concerne une grue (1) équipée d'une partie de base (2) qui comporte une flèche (4) pivotante et télescopique comprenant au moins un autre élément de flèche (5, 6). Un transmetteur de longueur et d'angle (10) comportant au moins un câble (12) détecte la longueur respective de la flèche télescopique (4), caractérisé en ce qu'un capteur dynamométrique (13) associé au câble (12) détecte la force qui agit sur le câble (12) dans son orientation axiale.
EP13780127.0A 2012-11-29 2013-10-21 Diagnostic de rupture de câble d'une grue Withdrawn EP2925660A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012221909.9A DE102012221909A1 (de) 2012-11-29 2012-11-29 Kabelbruchdiagnose bei einem Kran
PCT/EP2013/071972 WO2014082792A1 (fr) 2012-11-29 2013-10-21 Diagnostic de rupture de câble d'une grue

Publications (1)

Publication Number Publication Date
EP2925660A1 true EP2925660A1 (fr) 2015-10-07

Family

ID=49474408

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13780127.0A Withdrawn EP2925660A1 (fr) 2012-11-29 2013-10-21 Diagnostic de rupture de câble d'une grue

Country Status (9)

Country Link
US (1) US20150314997A1 (fr)
EP (1) EP2925660A1 (fr)
JP (1) JP2015535519A (fr)
CN (1) CN104995124A (fr)
BR (1) BR112015012244A2 (fr)
CA (1) CA2892734A1 (fr)
DE (1) DE102012221909A1 (fr)
RU (1) RU2015124323A (fr)
WO (1) WO2014082792A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3033294B1 (fr) 2013-08-15 2019-06-05 WIKA Mobile Control GmbH & Co. KG Frein moteur intelligent pour un capteur d'angle et de longueur d'une grue
DE102013014265A1 (de) * 2013-08-27 2015-03-05 Liebherr-Components Biberach Gmbh Vorrichtung zur Erkennung der Ablegereife eines hochfesten Faserseils beim Einsatz an Hebezeugen
US9576475B2 (en) * 2013-09-10 2017-02-21 Southwire Company, Llc Wireless-enabled tension meter
CN105444710B (zh) * 2014-08-21 2018-05-25 中联重科股份有限公司 多级伸缩结构行程测量装置和多级伸缩结构
DE202015001023U1 (de) * 2015-02-09 2016-05-10 Liebherr-Components Biberach Gmbh Kran
CN107352402B (zh) * 2017-09-21 2018-08-03 上海上安机械施工有限公司 一种吊臂断裂主动防护装置
WO2020226739A1 (fr) * 2019-05-07 2020-11-12 Tulsa Winch, Inc. Indicateur de moment de charge
DE102020131333A1 (de) * 2020-11-26 2022-06-02 Liebherr-Werk Nenzing Gmbh System und Verfahren zur Zustandserkennung einer Komponente eines Arbeitsgeräts sowie Arbeitsgerät
DE102022129460A1 (de) * 2022-11-08 2024-05-08 Fernsteuergeräte Kurt Oelsch GmbH Seillängengeber mit Sensor

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638211A (en) * 1969-10-08 1972-01-25 Litton Systems Inc Crane safety system
US3841493A (en) * 1972-06-05 1974-10-15 J Becker Moment monitoring system for hydraulic-piston type cranes
US3828339A (en) * 1973-05-14 1974-08-06 S Schedrovitsky Crane overload safety device
US3990584A (en) * 1974-06-03 1976-11-09 Strawson Hydraulics (Consultants) Limited Electrical safety control device for a variable radius crane
DE2430149A1 (de) * 1974-06-24 1976-02-12 Strawson Hydraulics Ltd Sicherheitseinrichtung fuer einen kran
US5160055A (en) * 1991-10-02 1992-11-03 Jlg Industries, Inc. Load moment indicator system
US5877693A (en) * 1998-05-27 1999-03-02 Grove U.S. L.L.C. Method and apparatus for measuring the length of a multi-section telescopic boom
JP2004047354A (ja) * 2002-07-15 2004-02-12 Fuji Heavy Ind Ltd 車両用灯具
JP4731934B2 (ja) * 2005-02-07 2011-07-27 株式会社アイチコーポレーション 伸縮ブームのワイヤ切断検出装置
DE102011051861A1 (de) * 2011-07-15 2012-12-27 L'orange Gmbh Kraftstoff-Einspritzinjektor
DE202011051861U1 (de) * 2011-11-04 2011-11-15 Fernsteuergeräte Kurt Oelsch GmbH Seilspannungsmesser für Seillängengeber

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2014082792A1 *

Also Published As

Publication number Publication date
JP2015535519A (ja) 2015-12-14
US20150314997A1 (en) 2015-11-05
DE102012221909A1 (de) 2014-06-05
BR112015012244A2 (pt) 2017-07-11
WO2014082792A1 (fr) 2014-06-05
CA2892734A1 (fr) 2014-06-05
RU2015124323A (ru) 2017-01-10
CN104995124A (zh) 2015-10-21

Similar Documents

Publication Publication Date Title
EP2925660A1 (fr) Diagnostic de rupture de câble d'une grue
EP2139803B2 (fr) Procédé pour assurer la commande d'un dispositif de déplacement de charge et commande de dispositif de déplacement de charge
EP3033294B1 (fr) Frein moteur intelligent pour un capteur d'angle et de longueur d'une grue
EP1598303B1 (fr) Grue mobile
DE102011107754B4 (de) Winkelbezogenes Verfahren zur Überwachung der Kransicherheit während des Rüstvorgangs, sowie Kran und Kransteuerung
DE102010020016B4 (de) Kran und Verfahren zum Aufrichten des Krans
EP2404861A1 (fr) Dispositif de levage avec des capteurs de position détectable
DE3420596C2 (de) Überwachungs- und Steuersystem für Auslegerkrane
WO2011023335A1 (fr) Appareil de manutention de trains de tiges, notamment appareil de manutention de tubes ou appareil de forage à entraînement par le haut et procédé d'utilisation
EP2871149A1 (fr) Entraînement d'une coulisse d'un système de verrouillage d'un système de télescopage d'une flèche de grue
EP3461676A1 (fr) Système d'alimentation en courant pour un parc de véhicules
EP2719652A1 (fr) Dispositif de transport de personnes au moyen d'une grue, et grue dotée d'un dispositif de transport de personnes
DE102012011726C5 (de) Verfahren zum Betreiben eines Krans mit Überwachungseinheit sowie Kran
EP3368462B1 (fr) Procédé pour faire fonctionner au moins deux appareils de levage en groupe, et ensemble comportant au moins deux appareils de levage
DE202014003260U1 (de) Zugbegrenzende Vorrichtung für einen Hebezug
EP2852548A1 (fr) Mesure de la longueur de la flèche d'une grue par mesure d'un temps de propagation
DE102004050647B4 (de) Überwachungsverfahren für eine Antriebseinrichtung auf Stillstand, hiermit korrespondierende Überwachungseinrichtung und hiermit korrespondierendes Antriebssystem
EP2945900B1 (fr) Dispositif d'accouplement
DE29906525U1 (de) Dachdeckerkran mit Funksender am Kranausleger
WO2016169765A1 (fr) Dispositif et procédé de confection d'une chaîne énergétique
DE102016109211A1 (de) Hilfsmaschine zur Positionierung eines Rotors einer Windenergieanlage sowie System und Verfahren zur Positionierung eines Rotors einer Windenergieanlage
DE102020110406A1 (de) Mobile Bolzenzieheinrichtung
DE102021131264A1 (de) Vorrichtung und Verfahren zur Vermeidung einer Aufweitung der Wicklungen eines Zugmittels bei Lastwechsel
EP2407412A1 (fr) Système de sécurité pour un chariot roulant d'une grue
DE102024125046A1 (de) Umlenkvorrichtung zum Umlenken eines Seils mit einem Seilsicherungselement

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20150526

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20190104

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20190515