EP1657211A3 - Crane jib - Google Patents

Crane jib Download PDF

Info

Publication number
EP1657211A3
EP1657211A3 EP05016876A EP05016876A EP1657211A3 EP 1657211 A3 EP1657211 A3 EP 1657211A3 EP 05016876 A EP05016876 A EP 05016876A EP 05016876 A EP05016876 A EP 05016876A EP 1657211 A3 EP1657211 A3 EP 1657211A3
Authority
EP
European Patent Office
Prior art keywords
jib
crane
boom
guy rope
bending moment
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
EP05016876A
Other languages
German (de)
French (fr)
Other versions
EP1657211B1 (en
EP1657211A2 (en
Inventor
Hans-Dieter Dipl.-Ing. Willim
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.)
Liebherr Werk Ehingen GmbH
Original Assignee
Liebherr Werk Ehingen 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 Liebherr Werk Ehingen GmbH filed Critical Liebherr Werk Ehingen GmbH
Publication of EP1657211A2 publication Critical patent/EP1657211A2/en
Publication of EP1657211A3 publication Critical patent/EP1657211A3/en
Application granted granted Critical
Publication of EP1657211B1 publication Critical patent/EP1657211B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B66C23/66—Outer or upper end constructions
    • 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
    • B66C23/82—Luffing gear
    • B66C23/821—Bracing equipment for booms
    • B66C23/826—Bracing equipment acting at an inclined angle to vertical and horizontal directions

Abstract

Die vorliegende Erfindung betrifft einen Kranausleger (4), insbesondere Teleskopausleger eines Fahrzeugkrans, mit einer Auslegerabspannung (15), die zumindest ein Abspannseil (18) aufweist, das von einem inneren Anlenkpunkt im Bereich eines Auslegeranlenkstücks (5) zu einem äußeren Anlenkpunkt (25) im Bereich eines auskragenden Auslegerteils (12) geführt ist. Erfindungsgemäß ist das Abspannseil (18) an seinem äußeren Ende derart angelenkt, dass die Abspannseilkraft in dem Kranausleger (4) ein Biegemoment induziert, das der Durchbiegung des Kranauslegers (14) entgegenwirkt. Dies kann dadurch erreicht werden, dass das Abspannseil (18) exzentrisch von dem Auslegerteil (11,14) angelenkt wird. Der äußere Anlenkpunkt (25) des Abspannseiles ist erfindungsgemäß von dem Auslegerteil (11,14) beabstandet an einem Anlenkbock (20) angeordnet, der an dem Auslegerteil (11,14) derart befestigt ist, dass eine Zugkraft des Abspannseils über den Anlenkbock (20) ein Biegemoment in den Kranausleger (4) einleitet, das das von einer Hakenlast und dem Eigengewicht des Auslegers (4) erzeugte Biegemoment in dem Ausleger (4) reduziert.. Der quer zur Auslegerlängsrichtung auskragende Anlenkbock (20) bildet sozusagen einen Biegemomentenbock, der derart an dem äußeren Ende des Kranauslegers (4) bzw. einem der äußeren Ausiegerteile befestigt ist, dass über den Anlenkbock (20) von der Abspannseilkraft in dem Kranausleger (4) ein dessen Durchbiegung reduzierendes Biegemoment erzeugt wird.The present invention relates to a crane jib (4), in particular telescopic jib of a vehicle crane, having a jib bracing (15) which has at least one bracing cable (18) extending from an inner articulation point in the region of a boom articulation piece (5) to an outer articulation point (25). is guided in the region of a cantilevered boom part (12). According to the invention, the guy rope (18) is articulated at its outer end in such a way that the guy rope force in the crane boom (4) induces a bending moment which counteracts the deflection of the crane boom (14). This can be achieved by articulating the guy rope (18) eccentrically by the boom part (11, 14). The outer articulation point (25) of the guy rope according to the invention of the boom part (11,14) spaced on a Anlenkbock (20) which is fixed to the boom part (11,14) such that a tensile force of the guy rope over the Anlenkbock (20 ) introduces a bending moment into the crane jib (4), which reduces the bending moment in the jib (4) generated by a hook load and the dead weight of the jib (4). The jib (20) cantilevered transversely to the jib longitudinal direction forms a bending moment jig, so to speak is attached to the outer end of the crane jib (4) or one of the outer Ausiegererteile such that over the Anlenkbock (20) of the guy rope force in the crane boom (4) a deflection-reducing bending moment is generated.

EP05016876A 2004-11-16 2005-08-03 Crane jib Active EP1657211B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202004017771U DE202004017771U1 (en) 2004-11-16 2004-11-16 crane boom

Publications (3)

Publication Number Publication Date
EP1657211A2 EP1657211A2 (en) 2006-05-17
EP1657211A3 true EP1657211A3 (en) 2007-04-18
EP1657211B1 EP1657211B1 (en) 2008-12-03

Family

ID=35809645

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05016876A Active EP1657211B1 (en) 2004-11-16 2005-08-03 Crane jib

Country Status (3)

Country Link
US (1) US7516858B2 (en)
EP (1) EP1657211B1 (en)
DE (2) DE202004017771U1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007012764U1 (en) 2007-09-12 2009-02-12 Liebherr-Werk Ehingen Gmbh Jib crane, jib and intermediate piece
DE102007056289B4 (en) * 2007-10-29 2009-06-04 Liebherr-Werk Ehingen Gmbh Method for erecting a crane jib
DE102007051539C5 (en) 2007-10-29 2018-04-12 Liebherr-Werk Ehingen Gmbh Method for erecting a crane jib
DE102010020016B4 (en) 2010-05-10 2021-04-29 Liebherr-Werk Ehingen Gmbh Crane and method of erecting the crane
CN102518305B (en) * 2011-12-13 2013-08-28 中联重科股份有限公司 Concrete pump truck and arm support thereof
JP5295417B1 (en) * 2012-08-27 2013-09-18 Ｉｈｉ建機株式会社 crane
US10479657B2 (en) * 2014-03-03 2019-11-19 Manitowoc Crane Companies, Llc Adjustable length tensioning member
CN104555760B (en) * 2014-12-26 2016-07-27 长沙中联消防机械有限公司 Telescopic jib structure and engineering truck
DE102015003982A1 (en) * 2015-03-26 2016-09-29 Liebherr-Werk Biberach Gmbh crane tower
CN105084233A (en) * 2015-06-29 2015-11-25 北汽福田汽车股份有限公司 Crane and method for establishing super-lifting device on crane
DE102016009301B4 (en) * 2016-08-01 2022-12-15 Liebherr-Werk Ehingen Gmbh Crane jib with spatial bracing
DE102018116575A1 (en) * 2018-07-09 2020-01-09 Terex Global Gmbh Support for the rear guy line of a telescopic crane
CN215711311U (en) * 2021-06-30 2022-02-01 湖南三一中型起重机械有限公司 Multi-working-condition truss arm head and crane

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3340845C1 (en) * 1983-11-11 1985-06-05 Mannesmann AG, 4000 Düsseldorf Lattice boom crane with main boom that can be dismantled
DE20020974U1 (en) * 2000-12-12 2002-04-25 Liebherr Werk Ehingen mobile crane
DE20219126U1 (en) * 2002-12-10 2004-04-15 Liebherr-Werk Ehingen Gmbh telescopic boom

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2118265A1 (en) * 1971-04-15 1972-11-09 Fried. Krupp Gmbh, 4300 Essen Telescopic boom, especially for a truck crane
DE2827088C2 (en) * 1978-06-21 1983-03-17 R. Stahl Gmbh & Co, 7000 Stuttgart Bending beam
US4383616A (en) * 1980-12-24 1983-05-17 Kidde, Inc. Luffing jib for construction crane
US4529094A (en) * 1983-08-22 1985-07-16 Harnischfeger Corporation Articulation for tower crane boom that has a parking position
DE29720972U1 (en) * 1997-11-26 1999-03-25 Ec Eng & Consult Spezialmasch Telescopic boom
DE19929549B4 (en) * 1999-06-23 2006-01-12 Terex-Demag Gmbh & Co. Kg Telescopic crane with boom extension
US7137518B2 (en) * 1999-06-28 2006-11-21 Terex-Demag Gmbh & Co. Kg Telescopic crane
DE10022658B4 (en) * 1999-06-28 2007-10-04 Terex-Demag Gmbh & Co. Kg telescopic crane

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3340845C1 (en) * 1983-11-11 1985-06-05 Mannesmann AG, 4000 Düsseldorf Lattice boom crane with main boom that can be dismantled
DE20020974U1 (en) * 2000-12-12 2002-04-25 Liebherr Werk Ehingen mobile crane
DE20219126U1 (en) * 2002-12-10 2004-04-15 Liebherr-Werk Ehingen Gmbh telescopic boom

Also Published As

Publication number Publication date
EP1657211B1 (en) 2008-12-03
EP1657211A2 (en) 2006-05-17
DE202004017771U1 (en) 2006-03-23
US20060096940A1 (en) 2006-05-11
US7516858B2 (en) 2009-04-14
DE502005006129D1 (en) 2009-01-15

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