EP2396265B1 - Barre de traction pour assujettir une flèche de grue - Google Patents

Barre de traction pour assujettir une flèche de grue Download PDF

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Publication number
EP2396265B1
EP2396265B1 EP10708097A EP10708097A EP2396265B1 EP 2396265 B1 EP2396265 B1 EP 2396265B1 EP 10708097 A EP10708097 A EP 10708097A EP 10708097 A EP10708097 A EP 10708097A EP 2396265 B1 EP2396265 B1 EP 2396265B1
Authority
EP
European Patent Office
Prior art keywords
tubular body
coupling elements
connecting rod
wall
bracing
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.)
Not-in-force
Application number
EP10708097A
Other languages
German (de)
English (en)
Other versions
EP2396265A1 (fr
Inventor
Thomas Müller
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.)
Vallourec Deutschland GmbH
Original Assignee
V&M Deutschland 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 V&M Deutschland GmbH filed Critical V&M Deutschland GmbH
Publication of EP2396265A1 publication Critical patent/EP2396265A1/fr
Application granted granted Critical
Publication of EP2396265B1 publication Critical patent/EP2396265B1/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
    • B66C23/82—Luffing gear
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32606—Pivoted

Definitions

  • the invention relates to a pull rod for the bracing of a crane boom according to the preamble of claim 1.
  • Cranes with crane jibs are z. B. from the DE 20 2008 006 167 U1 known.
  • the crane jibs are here with rope-shaped or from single, articulated interconnected rod-shaped elements braced.
  • a disadvantage of welded tie rods is that the welded joints between the pipe and coupling element have an increased notch sensitivity and are therefore subject to increased fatigue crack susceptibility in the weld seam area.
  • the fatigue strength of such tie rods is thus significantly limited, which leads to high costs due to premature failure.
  • the object of the invention is to provide a pull rod for bracing a crane jib, which does not have the disadvantages described and is inexpensive to produce.
  • tubular body and coupling elements of a one-piece pipe section wherein the coupling elements are each designed as a wall thickening of the ends of the tubular body, which are dimensioned so that a to be considered for the calculation of the sustainability of the tubular body cross-sectional weakening of the nominal wall thickness of the coupling elements in the field the bolt connection is avoided and the transition areas of the respective wall thickening to the tubular body to increase the fatigue strength have a ropeless transition.
  • the wall thickening can be achieved by an enlarged outer diameter and / or by a reduced inner diameter.
  • tie rod according to the invention is that on the one hand the production is much cheaper due to the one-piece design, on the other hand a significantly improved fatigue strength of the drawbar is achieved by the computationally full load capacity of the pipe cross-section in the bolt connection.
  • the wall thickening is produced in a first advantageous variant of the method by upsetting in particular by hot upsetting of the pipe end.
  • the upsetting process is advantageously carried out so that the transitions generated during compression from the pipe to the coupling piece as free of lumps and kerbarm are performed.
  • the transitions have the largest possible radius. If necessary, these transitions can also be generated by mechanical processing.
  • transitions lead to a flowing and notch-free transition to the non-thickened region of the tube. This advantageously ensures a low stress concentration factor in the transition zone.
  • the pull rod 1 consists of a tubular body 2, whose ends have coupling elements 3, which are designed according to the invention as a wall thickening of the tube.
  • the wall thickening is performed with an enlarged outer diameter, but it is also possible to realize the wall thickening by a reduced inner diameter.
  • transitions 7 of the wall thickening to the tubular body 2 are inventively ropeless and kerbarm executed to achieve the highest possible fatigue strength of the drawbar in operation.
  • the coupling elements 3 are each provided with holes 4, so that the tie rods are mutually chain link-like and articulated connectable.
  • bolts 5 are inserted with excess length in the holes 4, so that the both sides of the coupling element 3 protruding ends are connected by means of securing straps 6 and secured against loosening.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Earth Drilling (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Claims (4)

  1. Barre de traction pour le haubanage d'une flèche de grue, constituée d'un corps tubulaire métallique (2) et d'éléments de couplage (3) qui lui sont raccordés aux deux extrémités pour assurer une liaison articulée mutuelle des barres de traction avec des boulons,
    caractérisée en ce que le corps tubulaire (2) et les éléments de couplage (3) sont constitués d'une section de tube d'un seul tenant, dans laquelle les éléments de couplage (3) se présentent respectivement sous la forme d'un épaississement de paroi des extrémités du corps tubulaire (2), qui sont dimensionnées de manière à éviter un affaiblissement de l'épaisseur de paroi nominale en coupe transversale des éléments de couplage (3) dont il faut tenir compte pour le calcul de la charge utile du corps tubulaire (2), dans la zone de la liaison boulonnée, et de sorte que les zones de transition des épaisseurs de paroi respectives présentent avec le corps tubulaire une transition sans pièce rapportée pour augmenter la résistance d'endurance limite.
  2. Barre de traction selon la revendication 1, caractérisée en ce que :
    les épaisseurs de paroi sont des renforcements du diamètre externe et/ou des réductions du diamètre interne du corps tubulaire (2).
  3. Barre de traction selon la revendication 2, caractérisée en ce que :
    les épaisseurs de paroi sont des extrémités tubulaires façonnées à chaud.
  4. Barre de traction selon la revendication 1 ou la revendication 2,
    caractérisée en ce que :
    les épaisseurs de paroi sont des extrémités tubulaires épaissies par recharge par soudage.
EP10708097A 2009-02-11 2010-02-05 Barre de traction pour assujettir une flèche de grue Not-in-force EP2396265B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009008809A DE102009008809A1 (de) 2009-02-11 2009-02-11 Zugstange für die Abspannung eines Kranauslegers
PCT/DE2010/000180 WO2010091678A1 (fr) 2009-02-11 2010-02-05 Barre de traction pour assujettir une flèche de grue

Publications (2)

Publication Number Publication Date
EP2396265A1 EP2396265A1 (fr) 2011-12-21
EP2396265B1 true EP2396265B1 (fr) 2013-04-03

Family

ID=42199583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10708097A Not-in-force EP2396265B1 (fr) 2009-02-11 2010-02-05 Barre de traction pour assujettir une flèche de grue

Country Status (8)

Country Link
US (1) US8701903B2 (fr)
EP (1) EP2396265B1 (fr)
JP (1) JP5690746B2 (fr)
KR (1) KR101721891B1 (fr)
CN (1) CN102325716B (fr)
AR (1) AR075389A1 (fr)
DE (1) DE102009008809A1 (fr)
WO (1) WO2010091678A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014216674A1 (de) * 2014-08-21 2016-02-25 Schaeffler Technologies AG & Co. KG Rohrförmiges Bauteil und Verfahren zu seiner Herstellung

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009039710B4 (de) 2009-08-28 2014-03-20 V&M Deutschland Gmbh Verfahren zur Herstellung warmgewalzter Hohlprofile mit kleinen Kantenradien, Hohlprofil und Verwendung des Hohlprofils
DE202010017053U1 (de) 2010-12-24 2012-04-03 Geo. Gleistein & Sohn Gmbh Abspannelement und Zwischenprodukt aus zahlreichen geflochtenen, geschlagenen (gedrehten) oder weitgehend parallel angeordneten Kunstfasern
CN102337724A (zh) * 2011-08-02 2012-02-01 巨力索具股份有限公司 一种钢拉杆
DE202013003309U1 (de) * 2013-04-08 2014-07-09 Liebherr-Werk Biberach Gmbh Kran

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Publication number Priority date Publication date Assignee Title
DD73920A (fr) *
US3865173A (en) * 1969-05-08 1975-02-11 North American Rockwell Art of casting metals
JPS62180189A (ja) * 1986-02-03 1987-08-07 日本ハイブリツドテクノロジ−ズ株式会社 セラミツクスパイプ状部品の高温継手
JPH0338899U (fr) * 1989-08-23 1991-04-15
FR2732000B1 (fr) 1995-03-22 1997-05-30 Potain Sa Grue a montage automatise avec fleche repliable sur elle-meme
JP3949766B2 (ja) * 1997-01-14 2007-07-25 株式会社タダノ ラフィングジブ付きブームクレーンにおけるラフィングジブ支持装置
JPH1160167A (ja) * 1997-08-27 1999-03-02 Hitachi Constr Mach Co Ltd タワークレーン
JPH11180680A (ja) * 1997-12-18 1999-07-06 Kobe Steel Ltd 角形鋼管および角形鋼管を用いたラチスブーム
US6520709B1 (en) * 1999-04-30 2003-02-18 Frank's Casing Crew And Rental Tools, Inc. Variable length/capacity elevator links
SE521568C2 (sv) * 1999-10-05 2003-11-11 Vsl Int Ag Förbindelseelement
DE10062517C2 (de) * 2000-12-11 2002-12-05 Demag Mobile Cranes Gmbh & Co Teleskopausleger
CN2467487Y (zh) * 2001-03-26 2001-12-26 吴文发 塔式起重机拉杆滑轮平衡装置
DE202005008121U1 (de) * 2005-05-24 2006-10-05 Liebherr-Werk Biberach Gmbh Rohrförmiges Element mit Anschlag
DE202008006167U1 (de) 2008-05-06 2008-07-17 Terex-Demag Gmbh Seitlich abgespannter Gittermast

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014216674A1 (de) * 2014-08-21 2016-02-25 Schaeffler Technologies AG & Co. KG Rohrförmiges Bauteil und Verfahren zu seiner Herstellung

Also Published As

Publication number Publication date
US20120037584A1 (en) 2012-02-16
DE102009008809A1 (de) 2010-08-19
EP2396265A1 (fr) 2011-12-21
KR20110118795A (ko) 2011-11-01
JP2012517393A (ja) 2012-08-02
CN102325716B (zh) 2014-07-23
KR101721891B1 (ko) 2017-03-31
JP5690746B2 (ja) 2015-03-25
AR075389A1 (es) 2011-03-30
CN102325716A (zh) 2012-01-18
WO2010091678A1 (fr) 2010-08-19
US8701903B2 (en) 2014-04-22

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