EP2386517A1 - Flèche de grue, notamment flèche de grue mobile dotée d'éléments de traction prétendus - Google Patents

Flèche de grue, notamment flèche de grue mobile dotée d'éléments de traction prétendus Download PDF

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Publication number
EP2386517A1
EP2386517A1 EP11160100A EP11160100A EP2386517A1 EP 2386517 A1 EP2386517 A1 EP 2386517A1 EP 11160100 A EP11160100 A EP 11160100A EP 11160100 A EP11160100 A EP 11160100A EP 2386517 A1 EP2386517 A1 EP 2386517A1
Authority
EP
European Patent Office
Prior art keywords
tension elements
part according
jib part
boom
sensors
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.)
Granted
Application number
EP11160100A
Other languages
German (de)
English (en)
Other versions
EP2386517B1 (fr
Inventor
Franz Paschke
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.)
Manitowoc Crane Group France SAS
Original Assignee
Manitowoc Crane Group France SAS
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 Manitowoc Crane Group France SAS filed Critical Manitowoc Crane Group France SAS
Publication of EP2386517A1 publication Critical patent/EP2386517A1/fr
Application granted granted Critical
Publication of EP2386517B1 publication Critical patent/EP2386517B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • 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
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • 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
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • 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
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/707—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic guiding devices for telescopic jibs

Definitions

  • the invention relates to a boom, especially a crane boom, in particular a mobile crane boom according to the preamble of claim 1.
  • the object of the invention is to optimize the construction with respect to the stresses. It is solved by the subject matter of claim 1; the subclaims define advantageous embodiments.
  • One or more prestressed tension elements can therefore be integrated into a hybrid construction and checked with the aid of sensors.
  • the material can be better utilized.
  • the signals can be included in the load torque limit to control the bending moments.
  • the measured values are an essential part of the control process and the safety system.
  • the compressive stress in the forming shell can be kept nearly constant as the tensile stress in the adjacent biasing elements decreases. Accordingly, prestressing forces remain almost constant in the tensile area with a simultaneous decrease in the compressive stress in the shell. Simultaneous monitoring with sensors significantly increases safety and usability.
  • Lightweight constructions are of vital importance in crane construction and above all in jib construction. Filigree constructions and the use of lightweight, high-strength materials by utilizing the favorable-acting bias make the boom parts powerful and light with low deformations. Compared to guyed constructions requires a mast according to the invention a smaller space. The load capacities in the strength range and in the stability area can be continuously increased.
  • differential forces can be applied by means of a controlled or controlled adaptation. Due to the applied length changes are forced forces in the Boom part introduced, which counteract the physical effects. The thus statically indefinite system is able to relocate a concentration of stress. The different loads are distributed almost uniformly on the cross section, local peak stresses are avoided.
  • the force component from the guy ropes in the boom longitudinal axis is previously attributed to several boom parts.
  • the individual fasteners are additionally loaded and must be sized larger (Verbolzungsechen, cylinders, ropes, etc.). Due to the inventive bias of the individual jib parts, the low-acting biasing force is short-circuited, the connecting elements are not charged in addition and can be designed more economical.
  • piezoelectric sensors As a signal generator, inter alia, fiber optic sensors or piezoelectric sensors can be used. Piezoelectric composites would be able to detect damage to the component.
  • Actuators generate the variable tensile forces in the elements.
  • hydraulic cylinders pneumatic cylinders, spindles, springs or piezoceramic actuators can be used.
  • the cross section of the forming shell can be designed so that it is suitable to absorb compressive stresses at low material thickness.
  • a Shaping with outwardly curved shells without sharp-edged transitions is to be preferred.
  • Preferred materials for the production of the forming shell include fine grain steel, aluminum or fiber composites.
  • tension elements preferably rods, wires or slats can be used.
  • the distribution over the cross section is arbitrary.
  • the tension elements are distributed over the entire surface or partially over the cross section.
  • they are arranged between the plain bearings to use anisotropic materials that have low strengths transverse to the fiber longitudinal direction.
  • the orientation of the tension elements may extend in the cantilever direction or obliquely thereto.
  • a combination of oblique and longitudinal tension members counteracts the bending and torsional loading of the boom.
  • anisotropic materials are arranged on the sliding bearing surfaces, it must be ensured that the sliding and cladding layers distribute the high concentrated transverse forces from the bearings accordingly.
  • Suitable materials include carbon fibers, natural fibers, high strength steel wires or highly modular plastic fibers.
  • the cross-sectional shape of the tension elements is arbitrary.
  • the anchoring and the force application of the tension elements are located in or on the end frame of the jib part.
  • the tension elements are distributed in hollow profiles, channels or in an elastic matrix over the shaping shell. If the traction elements with the forming shell and / or the sheath form a shear-resistant unit, they must be prestressed before the connection. If the tension elements lie without connecting means between the shaping shell and the transverse winding, they are clamped by the bending deformation and form a positive connection with the shell and the transverse winding.
  • tension elements are in hollow profiles, they are preferably connected to the shaping shell in a shear-resistant manner and are supporting elements of the cross section.
  • the combination of the shell, the hollow sections and the envelope results in the advantageous stability-promoting sandwich construction.
  • the traction units according to the invention can also have a positive influence on the bearing behavior, fatigue strength and serviceability.
  • the tension elements are advantageously protected against damage and environmental influences.
  • the circumferential winding keeps the traction elements running in the longitudinal axis in their position and prevents detachment from the shaping shell. Preference is given to materials which can absorb high compressive forces transversely to their longitudinal axis (glass fiber, natural fiber, highly modular synthetic fibers, etc.).
  • the circumferential material layer absorbs lateral forces, and the stiffening effect increases the buckling resistance and reduces the risk of breakdown in shell constructions.
  • the circumferential fiber composite layer in conjunction with the abrasion-resistant and lubricious outer layer, protects the tension elements.
  • reference numeral 10 generally refers to the boom or boom cross-section.
  • reference numeral 11 biased tension elements are referred to, which are located within hollow sections 12.
  • the reference numeral 13 points to a layer of transverse fibers, while with 14 is a protective layer.
  • the inner shell 15 is a shaping shell, and the lamellae or lamella elements arranged in the transition region between the upper shell and the vertical section have been provided with the reference numeral 16.
  • the arrangement of the anchorages, in which the sensors and / or actuators are housed, are identified by the reference numeral 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP11160100A 2010-05-10 2011-03-29 Flèche de grue, notamment flèche de grue mobile dotée d'éléments de traction prétendus Not-in-force EP2386517B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202010006624U DE202010006624U1 (de) 2010-05-10 2010-05-10 Kranausleger, insbesondere Mobilkranausleger, mit vorgespannten Zugelementen

Publications (2)

Publication Number Publication Date
EP2386517A1 true EP2386517A1 (fr) 2011-11-16
EP2386517B1 EP2386517B1 (fr) 2013-01-23

Family

ID=42539029

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11160100A Not-in-force EP2386517B1 (fr) 2010-05-10 2011-03-29 Flèche de grue, notamment flèche de grue mobile dotée d'éléments de traction prétendus

Country Status (9)

Country Link
US (1) US8646629B2 (fr)
EP (1) EP2386517B1 (fr)
JP (1) JP5538300B2 (fr)
KR (1) KR20110124141A (fr)
CN (1) CN102241369B (fr)
BR (1) BRPI1102499A2 (fr)
CA (1) CA2736302C (fr)
DE (1) DE202010006624U1 (fr)
ES (1) ES2403704T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102733609B (zh) * 2012-06-26 2016-01-20 三一汽车制造有限公司 一种臂架、臂架系统和工程机械
US9630816B1 (en) 2013-03-11 2017-04-25 Oz Lifting Products, LLC Portable crane formed of composite members
ITMI20131680A1 (it) * 2013-10-11 2015-04-12 Cifa Spa Dispositivo ausiliario per una gru e gru comprendente tale dispositivo ausiliario
RU175228U1 (ru) * 2017-07-14 2017-11-28 Акционерное общество "Галичский автокрановый завод" Стрела подъёмного крана
WO2022011783A1 (fr) 2020-07-14 2022-01-20 三一汽车制造有限公司 Flèche, ensemble flèche et engin de chantier
CN111719865A (zh) * 2020-07-14 2020-09-29 三一汽车制造有限公司 臂架、臂架组件和作业机械

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1326943A (en) 1970-08-06 1973-08-15 Fischer H C Stressed elements and production thereof
EP0117774A1 (fr) 1983-01-21 1984-09-05 Creusot-Loire Flèche télescopique de grue
EP0449208A2 (fr) 1990-03-30 1991-10-02 Kabushiki Kaisha Toshiba Convertisseur de niveau pour la conversion de signaux de niveaux ECL en signaux de niveaux TTL
US5238716A (en) 1991-07-19 1993-08-24 Yutaka Adachi Composite beam having a hollow cross section
US5333422A (en) 1992-12-02 1994-08-02 The United States Of America As Represented By The United States Department Of Energy Lightweight extendable and retractable pole
DE4408444C1 (de) 1994-03-12 1995-04-06 Dornier Gmbh Rohr oder Hohlprofil mit besonderen Festigkeitseigenschaften bei geringem Gewicht und Verfahren zu seiner Herstellung
EP0668238A1 (fr) 1994-02-18 1995-08-23 EC Engineering + Consulting Spezialmaschinen GmbH Profil de flèche
EP0968955A2 (fr) * 1998-07-03 2000-01-05 Grove U.S. LLC Flèche de matériau composite
DE10022658A1 (de) 1999-06-28 2001-03-15 Mannesmann Ag Teleskopkran
DE20004016U1 (de) 2000-03-03 2001-07-12 Liebherr-Werk Ehingen Gmbh, 89584 Ehingen Teleskopausleger für Krane, vorzugsweise Fahrzeugkrane
DE20020974U1 (de) 2000-12-12 2002-04-25 Liebherr-Werk Ehingen Gmbh, 89584 Ehingen Fahrzeugkran
US6755212B1 (en) * 2001-02-23 2004-06-29 Schwing America, Inc. Boom stiffening system
EP1466855A2 (fr) * 2003-04-08 2004-10-13 Grove U.S. LLC Système de tension destiné à une grue mobile télescopique
EP0814050B1 (fr) 1996-06-18 2005-08-03 Grove U.S. LLC Flèche télescopique pour grues mobiles
DE19948830B4 (de) 1999-10-06 2005-11-24 Terex-Demag Gmbh & Co. Kg Teleskopausleger für Krane
DE202009009143U1 (de) 2009-07-07 2009-09-03 Terex Demag Gmbh Teleskopausleger für Krane, insbesondere Fahrzeugkrane
DE102008013203A1 (de) 2008-03-08 2009-09-17 Terex-Demag Gmbh Ausleger zur endseitigen Aufnahme von Lasten, Ausleger-Baugruppe mit mindestens zwei derartigen Auslegern sowie Verfahren zur Herstellung eines derartigen Auslegers

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0729351B2 (ja) 1986-05-28 1995-04-05 元麿 青木 射出成形機における作動油冷却方法
US5311510A (en) 1991-07-30 1994-05-10 The Furukawa Electric Co., Ltd. Data storing system for a communication control circuit
JP3175202B2 (ja) 1991-07-30 2001-06-11 古河電気工業株式会社 通信制御回路の受信データ格納方法
DE4134787A1 (de) 1991-10-22 1993-04-29 Sicom Ges Fuer Sensor Und Vors Langgestrecktes zugelement
DE4243878C2 (de) 1992-12-23 1996-05-15 Suspa Spannbeton Gmbh Überwachungsvorrichtung für Bauelemente
JPH0891788A (ja) 1994-09-29 1996-04-09 Aichi Corp 繊維強化プラスチック製ブーム
CN200995935Y (zh) * 2006-12-28 2007-12-26 长沙中联重工科技发展股份有限公司 臂架用自补偿式滑块装置

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1326943A (en) 1970-08-06 1973-08-15 Fischer H C Stressed elements and production thereof
EP0117774A1 (fr) 1983-01-21 1984-09-05 Creusot-Loire Flèche télescopique de grue
EP0449208A2 (fr) 1990-03-30 1991-10-02 Kabushiki Kaisha Toshiba Convertisseur de niveau pour la conversion de signaux de niveaux ECL en signaux de niveaux TTL
US5238716A (en) 1991-07-19 1993-08-24 Yutaka Adachi Composite beam having a hollow cross section
US5333422A (en) 1992-12-02 1994-08-02 The United States Of America As Represented By The United States Department Of Energy Lightweight extendable and retractable pole
EP0668238A1 (fr) 1994-02-18 1995-08-23 EC Engineering + Consulting Spezialmaschinen GmbH Profil de flèche
DE4408444C1 (de) 1994-03-12 1995-04-06 Dornier Gmbh Rohr oder Hohlprofil mit besonderen Festigkeitseigenschaften bei geringem Gewicht und Verfahren zu seiner Herstellung
EP0814050B1 (fr) 1996-06-18 2005-08-03 Grove U.S. LLC Flèche télescopique pour grues mobiles
EP0968955B1 (fr) 1998-07-03 2004-02-25 Grove U.S. LLC Flèche de matériau composite
EP0968955A2 (fr) * 1998-07-03 2000-01-05 Grove U.S. LLC Flèche de matériau composite
DE10022658A1 (de) 1999-06-28 2001-03-15 Mannesmann Ag Teleskopkran
DE19948830B4 (de) 1999-10-06 2005-11-24 Terex-Demag Gmbh & Co. Kg Teleskopausleger für Krane
DE20004016U1 (de) 2000-03-03 2001-07-12 Liebherr-Werk Ehingen Gmbh, 89584 Ehingen Teleskopausleger für Krane, vorzugsweise Fahrzeugkrane
DE20020974U1 (de) 2000-12-12 2002-04-25 Liebherr-Werk Ehingen Gmbh, 89584 Ehingen Fahrzeugkran
US6755212B1 (en) * 2001-02-23 2004-06-29 Schwing America, Inc. Boom stiffening system
EP1466855A2 (fr) * 2003-04-08 2004-10-13 Grove U.S. LLC Système de tension destiné à une grue mobile télescopique
DE102008013203A1 (de) 2008-03-08 2009-09-17 Terex-Demag Gmbh Ausleger zur endseitigen Aufnahme von Lasten, Ausleger-Baugruppe mit mindestens zwei derartigen Auslegern sowie Verfahren zur Herstellung eines derartigen Auslegers
DE202009009143U1 (de) 2009-07-07 2009-09-03 Terex Demag Gmbh Teleskopausleger für Krane, insbesondere Fahrzeugkrane

Also Published As

Publication number Publication date
CA2736302C (fr) 2013-08-27
DE202010006624U1 (de) 2010-08-05
CA2736302A1 (fr) 2011-11-10
ES2403704T3 (es) 2013-05-21
CN102241369B (zh) 2014-12-03
US20110272378A1 (en) 2011-11-10
BRPI1102499A2 (pt) 2012-10-16
JP2011236055A (ja) 2011-11-24
KR20110124141A (ko) 2011-11-16
JP5538300B2 (ja) 2014-07-02
US8646629B2 (en) 2014-02-11
CN102241369A (zh) 2011-11-16
EP2386517B1 (fr) 2013-01-23

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