EP1935833B1 - Elément de grille pour une grande grue mobile et son procédé de montage - Google Patents

Elément de grille pour une grande grue mobile et son procédé de montage Download PDF

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Publication number
EP1935833B1
EP1935833B1 EP07022135A EP07022135A EP1935833B1 EP 1935833 B1 EP1935833 B1 EP 1935833B1 EP 07022135 A EP07022135 A EP 07022135A EP 07022135 A EP07022135 A EP 07022135A EP 1935833 B1 EP1935833 B1 EP 1935833B1
Authority
EP
European Patent Office
Prior art keywords
bars
lattice piece
lattice
diagonal
corner posts
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.)
Active
Application number
EP07022135A
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German (de)
English (en)
Other versions
EP1935833A1 (fr
Inventor
Hans-Dieter 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 EP1935833A1 publication Critical patent/EP1935833A1/fr
Application granted granted Critical
Publication of EP1935833B1 publication Critical patent/EP1935833B1/fr
Active legal-status Critical Current
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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
    • B66C23/68—Jibs foldable or otherwise adjustable in configuration
    • 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

Definitions

  • the invention relates to a lattice piece for a mobile large crane and a method for erecting such a lattice piece.
  • lateral stiffeners were attached to both arms on both sides and adjusted with a double derrick (as proposed in the DE 100 02 917 A1 ).
  • the cantilevered outriggers are to be pivotable on a common axis, all solutions have in common that the width of the composite cantilever was always greater than the height.
  • the known boom in the rocker plane less resilient than perpendicular to the rocker plane.
  • the maximum length to be erected is also limited by the cross-sectional values of the jib in the teetering plane.
  • lattice pieces are for example from the DE 32 46 217 A1 or EP 0 609 998 A1 known.
  • Object of the present invention is to provide lattice pieces that can be used in a mobile crane, with extremely high loads can be lifted to great heights, the individual lattice pieces still remain road transportable.
  • a lattice piece for a mobile large crane which consists of four corner posts and diagonal bars connecting them, so divided into two parts that two interconnected corner stems each one part of the diagonal bars hinged with its one end hinged while the other end of each of the opposite corner stems is solvable.
  • the lattice pieces according to the invention can be transported in this disassembled form.
  • large lattice pieces can be created with a profile which has a cross section of, for example, 8 x 6 m and a length of 11 m.
  • the mesh pieces of the present invention can be assembled into a correspondingly powerful boom.
  • the lattice pieces according to the invention can be transported with so-called flat containers. These have dimensions that are uniform worldwide.
  • the disassembly of the lattice pieces into two parts is preferably chosen such that a separation takes place in the width as well as in the height of the lattice pieces.
  • the lattice pieces are to be designed so that the assembly and disassembly of the respective lattice piece can be carried out economically. This means that the construction and dismantling of the lattice piece must be done in a reasonable amount of time, with the least possible aids and taking into account the safety when setting up or dismantling.
  • additional zero rods can be hinged hinged to two interconnected corner stems. These zero bars serve to increase the stability. But they are not fundamentally necessary. In their place, according to another preferred embodiment of the invention, a rigid connection between the individual lattice pieces occur.
  • the lattice pieces can advantageously have corner stems, which consist of profiles which have fork-finger connections at their ends. At each corner post four zero bars and four diagonal bars can be articulated.
  • At least a portion of the zero bars and / or the diagonal bars may be telescopic.
  • Both the zero bars and the diagonal bars can be fixed in the construction in each case by means of bolted connections to the corner posts or with one another.
  • the profile of the corner handles made of two angled box-shaped miteinender welded sheets, to which each of the fork-finger connections are welded.
  • the connection between the corner stems and the diagonal and zero bars is rigid.
  • positioning devices can be provided for positioning the diagonal bars and / or zero bars in the disassembled state. So the transport units are securely kept in touch.
  • the positioning devices can also remain in the constructed lattice piece and in the crane use on or in the lattice piece.
  • a further advantageous embodiment of the invention is that an additional spatial diagonal is provided in each grid element.
  • the zero rods can roll during erection over arranged at their free ends rollers along the corner stems.
  • FIG. 1 an inventive lattice piece 10 is shown in perspective.
  • This lattice piece consists of four corner stems 12, which are connected to each other via diagonal bars 14 and 16 and zero bars 18 and 20, respectively.
  • a lattice piece 10, as in the FIGS. 1 to 5 is shown, for example, has a length L of 11 m, a width B of 8 m and a height H of 6 m.
  • this lattice piece In order to transport this lattice piece on the street, it is divided into two parts. In this case, two lattice piece halves, each comprising two corner handles 12, formed. These lattice piece parts are starting from the constructed lattice piece according to FIG. 1 formed by that corresponding bolt connections to the diagonal bars 16 and the zero bars 18 are solved at least on one side. The respective divided lattice pieces 10 are then in a folded position, as in FIG. 2 is shown transferred. For this purpose, the zero rods 20 are folded and the diagonal bars 14, which are telescopic, ateleskopiert. The corresponding folded or extended state is in FIG. 3 represented by the distinction of solid to dash-dotted lines. As in FIG.
  • the diagonal bars 14 are each struck at pivot points 22 and 24 of the corner stems 12. In extended position, as in solid line in FIG. 3 is shown, the diagonal bars 14 are bolted via bolts 26 in its extended position. The zero bars 20 are struck in each case via pivot points 28 on a corner post 12. The opposite free end can be bolted to the opposite corner post 12.
  • FIG. 4 is a view from above shown.
  • the corner handles 12 are connected to each other via the diagonal bars 16 and the zero bars 18.
  • the diagonal bars 16 are pivotable about pivot points 28, while the zero bars 18 are pivotable about pivot points 30 and 32, respectively.
  • the pivoted position is in the FIG. 4 represented by dash-dotted lines.
  • the respective free ends of the diagonal bars 16 and the zero bars 18 are bolted to the opposite Anbolz Vietnameseen the corner post 12.
  • FIG. 5 there are no spatial diagonal bars.
  • the corner handles 12 may be made of any profile.
  • the profile according to the embodiments according to FIG. 6 made of two angled and welded sheets 36, 38.
  • the cross-sectionally square profile has a side length of about 800 x 800 mm.
  • At the corner piece guide plates 40 may be welded to corresponding stiffeners 42 for receiving the zero bars or diagonal bars. With 44 bolt connections are indicated here.
  • the profiles of the diagonal bars 14, 16 and zero bars 18, 20 is arbitrary. They consist for example of a welded pipe construction or a welded construction of straight or bent sheets. In any case, the profiles are formed but kink-proof.
  • FIG. 7 is purely schematic and exemplified the process sequence for the construction of the lattice piece according to the invention.
  • Figure 7a is shown as a first transport unit 46 is removed by means of an auxiliary crane not shown here from a flat container, also not shown, on which the first transport unit has been transported and stored at a distance B from a second transport unit 48.
  • This second transport unit 48 was previously also taken up by a flat container with the auxiliary crane and to the in Figure 7a shown position.
  • the lower diagonal bars 16 are swung out and bolted, resulting in the distance B of 8 m.
  • the diagonal bars 16 and the zero bars 18 are attached to an auxiliary crane.
  • the upper diagonal 16 and the upper zero bars 18, that is, the diagonal 16 and the zero bars 18 of the upper disc swung out and bolted by means of bolts 50 with the corner stems 12 ,
  • the zero rods 20 can embrace the corner stems 12 fork-shaped. In this position, the zero rods 20 can be bolted to the corner stems 12. According to the embodiment in the Fig. 1 and Fig. 5 the zero rods 20 are bolted to corresponding tabs welded to the corner posts. Not shown here are roles similar to those in the FIG. 3 act described manner.
  • the pivot piece or the head piece (not shown here) can be made collapsible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Claims (14)

  1. Elément de grille (10) pour une grande grue mobile constituée de quatre montants d'angle (12) et de barres diagonales (14, 16) reliant ceux-ci,
    caractérisé
    en ce que les éléments de grille (10) sont chacun divisés en deux qu'à deux montants d'angle (12) reliés l'un à l'autre à chaque fois une partie des barres diagonales (14, 16) est articulée d'une manière rabattable avec son extrémité, tandis que son autre extrémité peut être relâchée à chaque fois des montants d'angle opposés (12).
  2. Elément de grille selon la revendication 1,
    caractérisé en ce que sont articulés d'une manière rabattable à deux montants d'angle (12) reliés l'un à l'autre additionnellement des barres zéro (18, 20).
  3. Elément de grille selon la revendication 1, caractérisé en ce que sont prévues entre des éléments de grille avoisinants des liaisons rigides en flexion.
  4. Elément de grille selon l'une des revendications 1 à 3, caractérisé en ce que les montants d'angle (12) sont constitués de profilés qui présentent à leurs extrémités des liaisons fourche-doigt (34).
  5. Elément de grille selon la revendication 1, 2 ou 4, caractérisé en ce que sont articulés à chaque montant d'angle (12) quatre barres zéro (18, 20) et quatre barres diagonales (14, 16).
  6. Elément de grille selon l'une des revendications 1 à 5, caractérisé en ce que les barres diagonales (14, 16) et/ou les barres zéro (18, 20) sont télescopiques au moins partiellement.
  7. Elément de grille selon l'une des revendications 1 à 6, caractérisé en ce que les barres zéro (18, 20) et/ou les barres diagonales (14, 16) peuvent être fixées à chaque fois par des assemblages à boulon aux montants d'angle (12) ou entre elles par des assemblages à boulon.
  8. Elément de grille selon l'une des revendications 1 à 7, caractérisé en ce que le profilé des montants d'angle (12) est constitué de deux tôles coudées en forme de caisson soudées l'une à l'autre.
  9. Elément de grille selon l'une des revendications 1 à 8, caractérisé en ce qu'il peut être divisé et replié de façon qu'il puisse être transporté dans un conteneur.
  10. Elément de grille selon l'une des revendications 1 à 9, caractérisé en ce que les assemblages entre les montants d'angle (12) et les barres diagonales (14, 16) et barres zéro (18, 20) sont au moins partiellement rigides en flexion.
  11. Elément de grille selon l'une des revendications 1 à 10, caractérisé en ce qu'il est prévu additionnellement une barre diagonale spatiale.
  12. Elément de grille selon l'une des revendications 1 à 10, caractérisé en ce que des dispositifs de positionnement sont prévus pour le positionnement des barres diagonales (14, 16) et/ou des barres zéro (18, 20) à l'état démonté.
  13. Procédé de dressage d'un élément de grille (10) selon l'une des revendications 1 à 12, constitué des étapes suivantes:
    - juxtaposition des deux parties de l'élément de grille;
    - pivotement vers l'extérieur de barres diagonales correspondantes (14, 16) et de barres zéro (18, 20) et boulonnage avec les montants d'angle (20) des parties opposées de l'élément de grille,
    - relevage du disque supérieur produit par l'assemblage des parties de l'élément de grille et, de ce fait, étirage de barres diagonales télescopiques (18, 20) ainsi que boulonnage des barres diagonales (18, 20) dans leur position étirée;
    - boulonnage des barres zéro pivotées durant le relevage dans la position finale (14, 16).
  14. Procédé selon la revendication 13, caractérisé en ce que les barres zéro (14, 16), pendant le dressage, roulent sur des rouleaux (52) disposés à leurs extrémités libres le long des montants d'angle.
EP07022135A 2006-12-20 2007-11-14 Elément de grille pour une grande grue mobile et son procédé de montage Active EP1935833B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006060347A DE102006060347B4 (de) 2006-12-20 2006-12-20 Gitterstück für einen mobilen Großkran und Verfahren zu seinem Aufrichten

Publications (2)

Publication Number Publication Date
EP1935833A1 EP1935833A1 (fr) 2008-06-25
EP1935833B1 true EP1935833B1 (fr) 2010-03-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07022135A Active EP1935833B1 (fr) 2006-12-20 2007-11-14 Elément de grille pour une grande grue mobile et son procédé de montage

Country Status (3)

Country Link
US (1) US7703615B2 (fr)
EP (1) EP1935833B1 (fr)
DE (2) DE102006060347B4 (fr)

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Also Published As

Publication number Publication date
DE102006060347B4 (de) 2008-09-25
DE102006060347A1 (de) 2008-06-26
US7703615B2 (en) 2010-04-27
DE502007002993D1 (de) 2010-04-15
EP1935833A1 (fr) 2008-06-25
US20080173605A1 (en) 2008-07-24

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