EP1958917A1 - Coup de télescopage - Google Patents

Coup de télescopage Download PDF

Info

Publication number
EP1958917A1
EP1958917A1 EP07024227A EP07024227A EP1958917A1 EP 1958917 A1 EP1958917 A1 EP 1958917A1 EP 07024227 A EP07024227 A EP 07024227A EP 07024227 A EP07024227 A EP 07024227A EP 1958917 A1 EP1958917 A1 EP 1958917A1
Authority
EP
European Patent Office
Prior art keywords
profile tube
verbolzstelle
recess
welding
sheet
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
EP07024227A
Other languages
German (de)
English (en)
Other versions
EP1958917B1 (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 EP1958917A1 publication Critical patent/EP1958917A1/fr
Application granted granted Critical
Publication of EP1958917B1 publication Critical patent/EP1958917B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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. They are usually carried out reinforced. Such a reinforced design is usually carried out by a further sheet metal layer which is applied in this area. This additional sheet metal layer is 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 base material of the telescopic section but charged by the welding process.
  • the welding process itself is expensive.
  • the so-called MAG welding process is usually used.
  • Object of the present invention is therefore to provide a generic telescope shot with a simple to apply and structurally stable Verbolzstelle.
  • a telescopic weft which consists of a profile tube with at least one recess having a Verbolzstelle, with a Verbolzstelle provided from a metal sheet, which is welded via a butt weld via laser beam welding or laser hybrid welding in the profile tube.
  • Laser beam welding in contrast to laser hybrid welding, has the great advantage that no filler metal is required because the base material alone is melted and forms the weld seam. Thus, the yield strength of the base material can be fully utilized. Laser hybrid welding is used when there is a larger gap between the sheets to be joined.
  • the bolt plate can not be welded according to the teaching of claim 1, since due to the strong shrinkage stresses in the radial direction already at or shortly after welding there is a risk of cracking at or in the seam.
  • Verbolzstelle forming sheet of the same material as the profile tube but is formed comparatively thicker.
  • the Verbolzstelle is circular and its serving to receive a bolt recess is arranged almost centrally.
  • the plate forming the bolting point has a thickness increasing towards its recess in the direction of the bolting point.
  • the bolted plate is designed in such a way that the sheet forming the bolting point thickens steadily from the sheet thickness of the profile tube to the larger thickness of the plate-shaped central area around the recess.
  • FIG. 1 is the top view of an upper flange of a telescopic section belonging to a profile tube 10, in which a Verbolzstelle 12 is arranged in the form of a Verbolztellers.
  • the Verbolzstelle 12 has almost centrally a recess 14 through which a not shown here bolts for producing a bolt connection can be inserted.
  • FIG. 1 In the illustration according to FIG. 1 only a section of the telescopic section forming a profile tube 10 is shown.
  • the telescopic weft is to be bolted after pushing out with another telescopic weft with appropriate Verbolzstelle.
  • Verbolzvorganges The manner of such a Verbolzvorganges is well known and will therefore not be shown again in detail at this point.
  • the statement made in the exemplary embodiment with respect to the telescopic weft statement applies in the same way to an articulated weft application.
  • the Verbolzstelle 12 is attached to the upper flange of the telescopic section.
  • a corresponding Verbolzstelle but also be provided on the lower flange or on the side walls.
  • FIG. 3 is the joint area between the profile tube 10 and Verbolzstelle 12 shown enlarged.
  • the intended in the region of this joint weld 16 results from the enlarged view according to FIG. 4 ,
  • This is a butt joint in the form of an I-seam.
  • a compound as a 1-seam (butt weld) has a significantly lower negative metallurgical influence on the component to be produced by the welding process.
  • the notch case is favorably influenced by the geometric design of the weld. This results in a significantly higher fatigue strength.
  • the circular Verbolzteller is divided into different thickness ranges.
  • the thickness of the bolt plate corresponds to that of the sheet thickness of the surrounding profile tube 10. This thickness retains the bolt plate for a region 18.
  • the bolt plate has approximately three times the thickness. This area is shown here at 20. From the region 18 of lesser thickness to the region 20 of greater thickness, the thickness increases steadily in a transition region 22.
  • the advantages of this solution are a very favorable flow of forces. Due to the butt joint and the notch-free seam transition as well as the low residual weld stress, a weld with very good mechanical properties is created here.
  • the laser seam is aftertreated. This is done by at least one side smoothing the laser weld. This smoothing can be done, for example, thermally by laser post-treatment with an unsharp laser. Other smoothing methods, such as, for example, mechanical smoothing methods, can alternatively be used.
  • the Verbolzteller is performed circular.
  • any other form of the bolted plate is possible, that is, for example, a polygonal symmetrical or asymmetrical shape.
  • the arrangement and geometric configuration of the recess 14 is not limited to the embodiment described above within the scope of the invention. Again, any shapes can be realized within the scope of the invention.
  • the position of the receiving points of the bolt is not necessarily central, but may also vary within the scope of the invention.
  • the required gap in the laser beam welding or laser hybrid welding can be achieved on the one hand by machining the Verbolztellers with the appropriate Tolleranzen and on the other hand at the hole in the tube of the telescopic section by laser cutting.
  • the profile tube and the bolt plate are advantageously made of a fine grain structural steel with a high yield strength. Due to the use of laser beam welding or laser hybrid welding, no filler metal is needed, because the base material alone is melted and forms the weld. Thus, the yield strength of the material can be fully utilized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
EP20070024227 2007-02-14 2007-12-13 Coup de télescopage Active EP1958917B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200720002203 DE202007002203U1 (de) 2007-02-14 2007-02-14 Teleskopschuß

Publications (2)

Publication Number Publication Date
EP1958917A1 true EP1958917A1 (fr) 2008-08-20
EP1958917B1 EP1958917B1 (fr) 2013-02-13

Family

ID=39469516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070024227 Active EP1958917B1 (fr) 2007-02-14 2007-12-13 Coup de télescopage

Country Status (2)

Country Link
EP (1) EP1958917B1 (fr)
DE (1) DE202007002203U1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009012772A1 (de) 2009-03-13 2010-09-16 Koki Technik Seating Systems Gmbh Fahrzeugsitz
DE202010013544U1 (de) * 2010-09-23 2012-01-19 Liebherr-Werk Ehingen Gmbh Teleskopschuß und Kran mit Teleskopschuß

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19836085A1 (de) * 1997-09-11 1999-04-01 Mannesmann Ag Verfahren zur Herstellung eines Teleskopschusses für Teleskopausleger eines Kranes
EP1055635A2 (fr) 1999-04-29 2000-11-29 MANNESMANN Aktiengesellschaft Grue avec une flèche télescopique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4018222A1 (de) * 1990-06-07 1991-12-12 Krupp Industrietech Teleskopausleger mit kupplungsvorrichtung fuer ausschiebeanordnung
DE10113471B4 (de) * 2001-03-19 2005-02-17 Highyag Lasertechnologie Gmbh Verfahren zum Hybridschweißen mittels eines Laserdoppelfokus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19836085A1 (de) * 1997-09-11 1999-04-01 Mannesmann Ag Verfahren zur Herstellung eines Teleskopschusses für Teleskopausleger eines Kranes
EP1055635A2 (fr) 1999-04-29 2000-11-29 MANNESMANN Aktiengesellschaft Grue avec une flèche télescopique

Also Published As

Publication number Publication date
DE202007002203U1 (de) 2008-06-26
EP1958917B1 (fr) 2013-02-13

Similar Documents

Publication Publication Date Title
DE10014078C2 (de) Verfahren zur Herstellung eines Schweißbolzens
WO2009135779A1 (fr) Utilisation d'un matériau composite métallique dans une structure de véhicule
DE102011055993B3 (de) Kraftfahrzeug-Fahrwerkskomponente
EP2195226A1 (fr) Procédé pour fabriquer un assemblage de composants principalement plat et assemblage de composants principalement plat
DE102011054542A1 (de) Laser-überlappschweissverfahren für teile aus verzinktem stahlblech
EP2551050B1 (fr) Procédé de soudage de tuyaux à paroi mince par soudage à haute température
DE102016120913A1 (de) Riss- und bruchbeständige Schweissverbindung und Schweissverfahren
DE2522277A1 (de) Zusammengesetzter turbinenrotor und herstellungsverfahren fuer einen solchen rotor
DE19913436C1 (de) Schweißverbindung von Bauteilen aus unterschiedlichen Werkstoffen
EP3245118A1 (fr) Profilé creux pourvu de moulures
DE102010010008A1 (de) Verfahren zur Herstellung eines geschweißten Hohlprofils sowie geschweißtes Hohlprofil
EP1958917B1 (fr) Coup de télescopage
DE102009041703A1 (de) Karosseriebauteil und Karosserie
DE102011113258B4 (de) Teleskopschuß und Kran mit Teleskopschuß
DE102010021138A1 (de) Karosseriebauteil
DE102015003128B4 (de) Verbindungsanordnung für eine Karosserie eines Personenkraftwagens
EP3601791B1 (fr) Segment bride pour un segment annulaire de tour en acier pour éolienne et procédé associé
DE102013107179B4 (de) Stoßabsorptionsvorrichtung für ein Kraftfahrzeug
DE102007032267A1 (de) Abgasanlagen-Rohr mit maßgeschneiderter Wandstärke
DE102011116155A1 (de) Hilfsrahmen für Kraftfahrzeuge
DE102020116570B3 (de) Laufrad für eine hydraulische Maschine und Herstellungsverfahren
DE3034995A1 (de) Fahrzeugrad, insbesondere fuer kfz
DE202005008121U1 (de) Rohrförmiges Element mit Anschlag
DE102012012901A1 (de) Stoßfängeranordnung für ein Kraftfahrzeug
DE102013226093A1 (de) Verfahren zur Auslegung eines Deformationselements sowie Deformationselement

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

17P Request for examination filed

Effective date: 20080826

17Q First examination report despatched

Effective date: 20080926

AKX Designation fees paid

Designated state(s): DE FR IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR IT

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502007011288

Country of ref document: DE

Effective date: 20130404

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20131114

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502007011288

Country of ref document: DE

Effective date: 20131114

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20191220

Year of fee payment: 13

Ref country code: IT

Payment date: 20191231

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201213

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201231

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20220606

Year of fee payment: 16

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230607