EP1935834B1 - Elément télescopique - Google Patents

Elément télescopique Download PDF

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Publication number
EP1935834B1
EP1935834B1 EP20070022978 EP07022978A EP1935834B1 EP 1935834 B1 EP1935834 B1 EP 1935834B1 EP 20070022978 EP20070022978 EP 20070022978 EP 07022978 A EP07022978 A EP 07022978A EP 1935834 B1 EP1935834 B1 EP 1935834B1
Authority
EP
European Patent Office
Prior art keywords
cut
section
reinforcing
telescopic
metal sheets
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.)
Expired - Fee Related
Application number
EP20070022978
Other languages
German (de)
English (en)
Other versions
EP1935834A1 (fr
Inventor
Engelbert Häbe
Joachim Henkel
Walter Gundel
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 EP1935834A1 publication Critical patent/EP1935834A1/fr
Application granted granted Critical
Publication of EP1935834B1 publication Critical patent/EP1935834B1/fr
Expired - Fee Related 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
    • 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
    • B66C23/708—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic locking devices for telescopic jibs

Definitions

  • the invention relates to a telescopic weft according to the preamble of claim 1.
  • Telescopic shots are used, for example, in mobile cranes. They usually consist of profile tubes. After pushing out, they are bolted together. These Verbolzstellen transfer large forces. Therefore, they are usually performed reinforced. Such a reinforced version is carried out by a further sheet metal layer which is applied in this area. This additional sheet metal layer is commonly referred to as a bolt plate or locking plate.
  • the bolt plates or locking plates are welded onto the profile tube at the bolting point.
  • the bolted joints are reinforced by the welded-on sheet metal.
  • the basic material of the telescope shot but burdened by the welding process. The welding process itself is expensive and must be carried out by trained personnel. This in turn leads to an increase in the cost of production.
  • Object of the present invention is to provide a generic telescope shot with a simple to apply and thus cost-effective reinforcement in the field of Verbolzstelle.
  • a telescopic weft which consists of a profile tube with at least one recess having a Verbolzstelle, thereby reinforced by sheets that the Verbolzstelle reinforcing plates are glued on both sides of the profile tube.
  • the Verbolzstelle reinforcing sheets are circular and their serving to receive the pin recess is arranged centrally.
  • the reinforcing sheets may also have any other shape, for example a rectangular shape, a square shape.
  • the shape of the recess in the telescopic tube or Anlenkschuß be arbitrary. It is also possible that the Verbolzstelle is located in the Verbolzteller off-center.
  • the plates which reinforce the bolting point may advantageously have a thickness which increases towards its recess.
  • the recess in the profile tube is dimensioned so that it receives a projection of the Verbolzstelle reinforcing plates.
  • the advantage lies in the fact that already in the connection point between the bolt plate and telescopic profile a positive connection is made.
  • the recess of the telescopic profile defined here exactly the place in which the bolt plate must be positioned, so that the arrangement of the bolt plate is additionally facilitated during assembly.
  • Verbolzstelle reinforcing sheets may be glued together in the region of their projections within the recess of the profile tube, while they are glued outside the recess on the profile tube.
  • the Verbolzstelle reinforcing plates can complete with their recess congruent with the recess of the profile tube. This allows the Verbolzstelle and the Verbolzteller be made particularly simple and inexpensive.
  • the recesses of the profile tube may be slightly larger than the recesses of the Verbolzstelle reinforcing plates, so that they protrude beyond the edge of the recess of the profile tube.
  • the Verbolzstelle can be arranged in the upper flange, in one or both of the side walls and / or the lower flange of the profile tube.
  • FIG. 1 a section through a detail of a telescopic section 10 is shown.
  • an upper flange 12 of the telescopic section 10 forming profile tube is shown here, which has a recess 22 through which a not shown here pin for making a bolt connection can be inserted.
  • the upper flange 12 of the telescopic section 10 has reinforcements in the form of applied metal sheets 16 and 18.
  • a plate 16 is placed from above on the upper belt, while the other sheet 18 is placed from below on the top flange.
  • the sheets 16 and 18 are glued to the top chord 12, respectively. This forms between the top flange 12 on the one hand and the sheets 16 and 18 on the other hand adhesive surfaces 20. These adhesive surfaces 20 seal the top flange in the gain region and thereby prevent corrosion at this point.
  • the recess 22 is formed in the profile tube larger than the diameter of the plug pin not shown here.
  • a recess corresponding to the diameter of the plug-in pin for connection has the otherwise circularly formed plates 16 and 18 which serve to reinforce the bolting point 14.
  • these sheets 16 and 18 each have a projection 26 which is dimensioned so that the plates 16 and 18 in the recess 22 in the profile tube 12 abut by the correspondingly formed paragraph (see , FIG. 1 ).
  • the projections 26 are further dimensioned so that the sheets 16 and 18 in the region of the recess 22 of the profile tube 12 are connected to each other in area by an adhesive surface 20.
  • the recess 22 of the upper belt 12 is machined and defined on the projection 26 of the sheets 16 and 18 at.
  • the recess in the telescopic profile can be used as a positioning aid for the sheets 16 and 18 during bonding.
  • the adhesive surface 20 is still a positive connection between the sheets 16 and 18 and the upper flange created.
  • the sheets 16 and 18 have an increasing thickness towards their recess 24. This thickness can, as in FIG. 1 is shown, gradually increase.
  • FIG. 2 corresponds essentially to that according to FIG. 1 , Here, however, no projection 26 is provided in the sheets 16 and 18.
  • the recess 22 in the top flange 12 and the recesses 24 in the sheets 16 and 18 have substantially the same diameter.
  • the upper flange 12 itself is part of the Verbolzstelle.
  • Each adhesive surface 20 has a certain elasticity, so that additionally dimensional fluctuations that can occur are compensated.
  • the plates 16 and 18 may protrude further beyond the base material of the upper flange 12 in the Verbolzstelle, as in the FIG. 2 not shown.
  • the Verbolzstellen 14 produce in a particularly simple and cost-effective manner.

Claims (8)

  1. Elément télescopique (10) constitué d'un tube profilé (12) avec au moins un emplacement de boulonnage (14) présentant un évidement (22), qui est renforcé par des tôles (16, 18), caractérisé en ce que sont collées sur les deux côtés du tube profilé (12) des tôles (16, 18) renforçant l'emplacement de boulonnage (14).
  2. Elément télescopique selon la revendication 1, caractérisé en ce que les tôles (16, 18) renforçant l'emplacement de boulonnage (14) sont circulaires, et leur évidement (24) servant à la réception d'un boulon est disposé au milieu.
  3. Elément télescopique selon la revendication 1 ou 2, caractérisé en ce que les tôles (16, 18) renforçant l'emplacement de boulonnage (14) ont une épaisseur qui augmente vers leur évidement (24).
  4. Elément télescopique selon l'une des revendications 1 à 3, caractérisé en ce que l'évidement (22) dans le tube profilé (12) est dimensionné de façon à recevoir une saillie (26) des tôles (16, 18) renforçant l'emplacement de boulonnage (14).
  5. Elément télescopique selon la revendication 4, caractérisé en ce que les tôles (16, 18) renforçant l'emplacement de boulonnage (14) sont assemblées par collage dans la zone de leurs saillies (26) à l'intérieur de l'évidement (22) du tube profilé (12), tandis qu'à l'extérieur de l'évidement (22) elles sont collées sur le tube profilé (12).
  6. Elément télescopique selon l'une des revendications 1 à 4, caractérisé en ce que les tôles (16, 18) renforçant l'emplacement de boulonnage (14) se terminent avec leur évidement (24) en coïncidence avec l'évidement (22) du tube profilé (12).
  7. Elément télescopique selon l'une des revendications 1 à 3, caractérisé en ce que l'évidement (22) du tube profilé (12) est légèrement plus grand que les évidements (24) des tôles (16, 18) renforçant l'emplacement de boulonnage (14) de sorte que celles-ci font saillie sur le bord de l'évidement (22) du tube profilé (12).
  8. Elément télescopique selon l'une des revendications 1 à 7, caractérisé en ce que l'emplacement de boulonnage (14) est disposé dans le brin supérieur (12), dans une ou les deux des parois latérales et/ou le brin inférieur du tube profilé.
EP20070022978 2006-12-21 2007-11-27 Elément télescopique Expired - Fee Related EP1935834B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200620019308 DE202006019308U1 (de) 2006-12-21 2006-12-21 Teleskopschuß

Publications (2)

Publication Number Publication Date
EP1935834A1 EP1935834A1 (fr) 2008-06-25
EP1935834B1 true EP1935834B1 (fr) 2011-09-28

Family

ID=39205953

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070022978 Expired - Fee Related EP1935834B1 (fr) 2006-12-21 2007-11-27 Elément télescopique

Country Status (2)

Country Link
EP (1) EP1935834B1 (fr)
DE (1) DE202006019308U1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010013544U1 (de) * 2010-09-23 2012-01-19 Liebherr-Werk Ehingen Gmbh Teleskopschuß und Kran mit Teleskopschuß
DE202019101975U1 (de) 2019-04-05 2019-04-15 Manitowoc Crane Group France Sas Teleskopschuss mit Blechaussteifung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1193544A (en) * 1968-02-28 1970-06-03 Jones Cranes Ltd Improvements in or relating to Cranes.
DE4018222A1 (de) * 1990-06-07 1991-12-12 Krupp Industrietech Teleskopausleger mit kupplungsvorrichtung fuer ausschiebeanordnung
DE29824867U1 (de) 1997-05-28 2003-03-06 Demag Mobile Cranes Gmbh & Co Kran mit einem Teleskopausleger
ATE286849T1 (de) * 1999-04-29 2005-01-15 Terex Demag Gmbh & Co Kg Kran mit einem teleskopausleger
US6786233B1 (en) * 2001-02-23 2004-09-07 Schwing America, Inc. Boom utilizing composite material construction

Also Published As

Publication number Publication date
EP1935834A1 (fr) 2008-06-25
DE202006019308U1 (de) 2008-04-30

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