EP0928769B1 - Auslegerteil für Turmkran - Google Patents

Auslegerteil für Turmkran Download PDF

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Publication number
EP0928769B1
EP0928769B1 EP19980420243 EP98420243A EP0928769B1 EP 0928769 B1 EP0928769 B1 EP 0928769B1 EP 19980420243 EP19980420243 EP 19980420243 EP 98420243 A EP98420243 A EP 98420243A EP 0928769 B1 EP0928769 B1 EP 0928769B1
Authority
EP
European Patent Office
Prior art keywords
triangulation
segments
tower crane
module
jib element
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 - Lifetime
Application number
EP19980420243
Other languages
English (en)
French (fr)
Other versions
EP0928769A1 (de
Inventor
François Aquino
Jean-Claude Saint Gerand
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.)
Manitowoc Crane Group France SAS
Original Assignee
Potain SA
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 Potain SA filed Critical Potain SA
Publication of EP0928769A1 publication Critical patent/EP0928769A1/de
Application granted granted Critical
Publication of EP0928769B1 publication Critical patent/EP0928769B1/de
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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

Definitions

  • the present invention relates to the field of tower cranes and it concerns, more particularly, a lattice boom element for tower crane.
  • an arrow of tower crane is constituted by a succession of elements arrowheads, aligned and assembled to each other to form an arrow of the desired length.
  • Each arrow element is a beam structure latticework, of triangular, rectangular or trapezium, which includes chords defining two at two flat faces, the chords being connected between they, in these faces, by pieces of the bar type forming a triangulation.
  • lattice boom elements are made from open or closed sections of the trade, such as tubes of round or square section - see eg demand German patent 2419678. This kind of realization does not does not optimize the arrow elements, especially from the point of view of their weight and the operations of construction.
  • tower cranes that have mast elements whose ribs are made of folded sheet with a variable section over the height of these elements, at least as regards the ribs back, the triangulation of the faces of the mast elements being made by bar or tube diagonals - see French Patent 2049423 showing a decrease in steps.
  • the present invention aims at providing an arrow element for tower cranes whose structure and method of obtaining allow optimization especially in terms of decrease in the weight of the element, for mechanical characteristics equal or even improved, while simplifying and streamlining manufacturing this element.
  • the present invention has essentially for object an arrow element in lattice for tower cranes, including chords defining two to two flat faces, and parts interconnecting the chords in each of these faces to form a triangulation, said parts being constituted by triangulation modules made each from a cut sheet metal and possibly folded, the boom element being characterized in that each triangulation module comprises at least two rectilinear segments connected to each other by forming at least one angle and presenting at least two free ends, this triangulation module being assembled to the frames, particularly by welding, to free ends of his segments as well as his or her corner areas.
  • the different segments of the modules of triangulation may be of constant section or possess, at least for some of them, a section variable on the length of the segment concerned.
  • each triangulation module is made from a folded sheet according to the direction longitudinal segments of this module, or at least some of those segments, so as to constitute shaped segments in angle.
  • each triangulation module may have, at the free ends of its segments and in one or more corner regions, a cutout creating a lateral clearance, facilitating access for the welding of this module of triangulation on the frames.
  • the triangulation modules may have various configurations.
  • each triangulation module has a configuration in "V", resulting from two segments connected in one zone single angle.
  • each triangulation module has an "M" configuration, resulting from three segments connected in a common corner area.
  • each module of triangulation has a "Z" configuration, resulting in of three segments successively connected in two zones angle.
  • the members of the element of arrow are, like the triangulation modules, realized from cut and folded sheets.
  • These chords are, advantageously, of variable section over the length of the boom element and, more particularly, section decreasing from one end to the other of the chord.
  • an arrow element resulting from the assembly of at least three members, and series of triangulation modules arranged in different faces defined by the chords.
  • chords are, like triangulation modules, made of cut sheet metal and folded, we have great freedom of design in the choice of the shape of the upper frame (s) and lower chords, as well as the thickness of the constituent sheet.
  • the principle of the invention makes it possible for different segments of a triangulation module, the choice a quadratic surface and quadratic moment and possibly variable, for example by realizing segments of variable section by an appropriate cut of sheet metal, or by choosing to make segments in sheet folded or not; folding here makes it possible, in particular, to vary the quadratic moment, while the form of the cutting allows in particular to distribute the material of segments of the triangulation modules so as to remove the lateral shift of the neutral fibers of these modules by relative to the neutral fiber of the frames.
  • the principle of the invention also allows a free choice of the shape of the modules: variable angle between segments, segments of lengths and / or different sections, "V" shapes, "M” or “Z” as previously defined, adaptation of shapes and dimensions of the corner areas used for making welded connections with the members, this to solve fatigue problems and to control the eccentricities of the neutral fibers.
  • the invention makes it possible to optimize the management of the production of the arrow elements: by allowing this production from the supply of a single type of material, in the form of a flat product; by bringing a significant decrease in the number of parts needed, since only one triangulation module realizes the equivalent of two or more diagonals traditional, each segment of a corresponding module at a diagonal; and by limiting the operations of transformation into three types of operations: cutting, folding and welding, which can be automated.
  • Figures 1 to 5 show an arrow element for tower cranes, of triangular section.
  • the element of arrow includes an upper chord 1, and two lower chords 2 and 3, parallel to each other, which define, two by two, two inclined lateral faces, symmetrical with respect to the longitudinal median plane 4 of the boom element, and a lower face, in particular horizontal.
  • the upper chord 1 is made of sheet metal cut and folded, in particular steel of elastic limit greater than 360 N / mm 2 .
  • the upper chord 1 has an inverted "V" section, this section being continuously variable along the length of the chord and, more particularly, decreasing from one of its ends to the other end (see FIG. and compare also Figures 4 and 5).
  • the two lower chords 2 and 3 forming a tread for a trolley are also made of cut sheet metal and folded, in particular steel of elastic limit greater than 360 N / mm 2 .
  • Each lower chord 2 or 3 has a rectangular section, continuously variable along the length of this chord and, more particularly, decreasing in height from one end to the other end (see FIG. 3, and compare also FIGS. ).
  • connection ends for the assembly of the arrow element considered with other elements of similar arrow.
  • the upper chord 1 thus carries, at one end, a connecting end 5 forming a clevis and, the other end, a connecting end 6 forming tenon.
  • the lower chords 2 and 3 each carry, at their respective ends, connection ends 7 and 8.
  • each triangulation module 9 comprises two rectilinear segments 10 and 11 connected to each other in 12 at an angle, so that the module of triangulation 9 has a configuration in "V".
  • Each triangulation module 9 is made of cut and folded sheet, figure 6 showing the shape of the sheet cut before folding, while Figure 7 shows the definitive configuration of the module of triangulation 9, as obtained after folding of the sheet.
  • the folding of the sheet is made on the first segment 10, along a longitudinal fold line 13 and, on the second segment 11, following a fold line longitudinal 14. After folding, the two segments 10 is 11 and have a conformation angle.
  • the sheet has special cut-outs 15, 16, 17 and 18, angled entering, which define side clearances.
  • the segments of the triangulation module 9 may have a variable section (with narrowing or enlargement) along their length.
  • the assembly of triangulation modules 9 is such that the area 12 of each module 9 is connected to the frame superior 1, while the free ends of both segments 10 and 11 of each module 9 are connected to a lower chord, such as chord 2.
  • Some number of triangulation modules 9 are thus successively mounted, along the length of the arrow, the end of the second segment 11 of a module 9 being close to the end of the first segment 10 of next module 9.
  • each triangulation module 9 on the frames 1, 2, 3 is made by welding.
  • the corner area 12 of each module 9 has a width adapted to the welded connection with one of the two wings of the upper chord 1.
  • the side clearances 15, 16, 17 and 18, located at the level connections of each triangulation module 9 with the frames 1, 2, 3, allow easy access for the welding torch.
  • each triangulation module 9 possesses two segments 10 and 11 of unequal lengths. Reports lengths of the two segments 10 and 11 can be modified, and in a variant not shown, these two segments 10 and 11 are of equal lengths, the module of triangulation thus being made symmetrical.
  • FIG. 8 shows a triangulation module 9 ' in the general form of "M", which has two segments rectilinear lines 10 and 11 interconnected in an area 12, and a third rectilinear segment 19, located between the two previous segments 10 and 11 and connected, also, at the corner area 12, here relatively elongate.
  • the third segment 19 is not folded longitudinally, and thus retains a configuration flat.
  • Figure 9 shows a 9 "triangulation module in the general form of "Z", which comprises a first segment rectilinear 20 folded longitudinally, a second segment rectilinear 21 connected to the first in a first zone 22 and a third rectilinear segment 23 connected to the previous one in a second corner zone 24.
  • the triangulation modules 9 'and 9 " are still made from sheet metal cut and folded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Claims (9)

  1. Auslegerelement in Strebenfachwerk-Technik für einen Turmkran, das Streben (1, 2, 3) umfasst, von denen jeweils zwei eine ebene Fläche bilden, sowie Teile, die die Streben untereinander auf jeder dieser Flächen verbinden, um eine Dreiecks-Konfiguration zu bilden, wobei diese Teile aus Dreiecks-Bausteinen (9, 9', 9") bestehen, von denen jeder aus einem gestanzten und eventuell gefalzten Blech hergestellt ist, dadurch gekennzeichnet, dass jeder Dreiecks-Baustein mindestens zwei geradlinige Segmente (10, 11; 10, 11, 19; 20, 21, 23) umfasst, die miteinander so verbunden sind, dass sie mindestens einen Winkel (12; 22, 24) bilden und mindestens zwei freie Enden aufweisen, wobei dieser Dreiecks-Baustein (9, 9', 9'') an die Streben (1, 2, 3) montiert ist, insbesondere durch Schweißen, und zwar an den freien Enden seiner Segmente (10, 11; 10,11, 19; 20, 23) sowie an seinem Winkelbereich oder an seinen Winkelbereichen (12; 22, 24).
  2. Auslegerelement für einen Turmkran nach Anspruch 1, dadurch gekennzeichnet, dass die Segmente (10, 11; 10, 11, 19; 20, 21, 23) der Dreiecks-Bausteine (9, 9', 9''), zumindest bestimmte dieser Segmente, einen Querschnitt haben, der längs des betreffenden Segments variabel ist.
  3. Auslegerelement für einen Turmkran nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass jeder Dreiecks-Baustein (9, 9', 9") aus einem gefalzten Blech (bei 13, 14) hergestellt ist, das der Längsrichtung der Segmente (10, 11) oder bestimmter Segmente (20, 23) dieses Bausteins folgt, und zwar so, dass Winkelprofil-Segmente gebildet werden.
  4. Auslegerelement für einen Turmkran nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass jeder Dreiecks-Baustein (9, 9', 9") an den freien Enden seiner Segmente (10, 11) und in seinem Winkelbereich oder seinen Winkelbereichen (12; 22, 24) einen Ausschnitt (15, 16, 17, 18) besitzt, der einen seitlichen Freistich schafft, der den Zugang für das Schweißen dieses Dreiecks-Bausteins (9, 9', 9") an die Streben (1, 2, 3) erleichtert.
  5. Auslegerelement für einen Turmkran nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass jeder Dreiecks-Baustein (9) eine V-förmige Konfiguration besitzt, die sich aus zwei Segmenten (10, 11) ergibt, die mit einem einzigen Winkelbereich (12) verbunden sind.
  6. Auslegerelement für einen Turmkran nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass jeder Dreiecks-Baustein (9') eine M-förmige Konfiguration besitzt, die sich aus drei Segmenten (10, 11, 19) ergibt, die mit einem gemeinsamen Winkelbereich (12) verbunden sind.
  7. Auslegerelement für einen Turmkran nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass jeder Dreiecks-Baustein (9'') eine Z-förmige Konfiguration besitzt, die sich aus drei Segmenten (20, 21, 23) ergibt, die nacheinander mit zwei Winkelbereichen (22, 24) verbunden sind.
  8. Auslegerelement für einen Turmkran nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass seine Streben (1, 2, 3), wie die Dreiecks-Bausteine (9, 9', 9''), aus gestanzten und gefalzten Blechen hergestellt sind.
  9. Auslegerelement für einen Turmkran nach Anspruch 8, dadurch gekennzeichnet, dass die Streben (1, 2, 3) aus gestanztem und gefalztem Blech einen längs des Auslegerelements variablen Querschnitt besitzen, und zwar, noch genauer gesagt, einen von einem Ende (5, 7) zum anderen Ende (6, 8) der Strebe (1, 2, 3) abnehmenden Querschnitt.
EP19980420243 1998-01-12 1998-12-21 Auslegerteil für Turmkran Expired - Lifetime EP0928769B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9800390A FR2773550B1 (fr) 1998-01-12 1998-01-12 Element de fleche pour grue a tour
FR9800390 1998-01-12

Publications (2)

Publication Number Publication Date
EP0928769A1 EP0928769A1 (de) 1999-07-14
EP0928769B1 true EP0928769B1 (de) 2004-05-19

Family

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Family Applications (1)

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EP19980420243 Expired - Lifetime EP0928769B1 (de) 1998-01-12 1998-12-21 Auslegerteil für Turmkran

Country Status (6)

Country Link
EP (1) EP0928769B1 (de)
JP (1) JPH11278792A (de)
DE (1) DE69823973T2 (de)
ES (1) ES2221138T3 (de)
FR (1) FR2773550B1 (de)
RU (1) RU2215684C2 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2401699B (en) * 2001-12-20 2005-05-25 Caterpillar Inc Load bearing member arrangement and method
FR2838416B1 (fr) * 2002-04-16 2004-10-01 Potain Sa Triangulation d'une poutre en treillis, notamment d'un element de fleche pour grue a tour
ITBA20110013A1 (it) * 2011-03-22 2012-09-23 Sites Srl "procedimento di fabbricazione di un'unica struttura reticolare bidimensionale realizzata in acciaio, in cui le aste hanno una sezione rettangolare, e strutture reticolari tridimensionali realizzate mediante le strutture bidimensionali".
CN102556857A (zh) * 2011-12-12 2012-07-11 中联重科股份有限公司 桁架臂对接结构，具有其的桁架臂以及桁架臂起重机
CN103420283A (zh) * 2012-05-18 2013-12-04 李宜君 塔式起重机的动臂结构
DE102012109586A1 (de) * 2012-10-09 2014-04-10 Demag Cranes & Components Gmbh Kran, insbesondere Brückenkran oder Portalkran, mit mindestens zwei Kranträgern
DE102012109588A1 (de) * 2012-10-09 2014-04-10 Demag Cranes & Components Gmbh Kran, insbesondere Brückenkran oder Portalkran, mit mindestens einem Kranträger
DE202013003309U1 (de) * 2013-04-08 2014-07-09 Liebherr-Werk Biberach Gmbh Kran
CN104555757A (zh) * 2013-10-11 2015-04-29 北汽福田汽车股份有限公司 连接臂架及设有该连接臂架的臂架系统和工程设备
CN106892365A (zh) * 2017-04-20 2017-06-27 沈阳建筑大学 一种双臂并行平头塔式起重机
WO2021002452A1 (ja) * 2019-07-04 2021-01-07 コベルコ建機株式会社 ラチス構造物及び作業機械
CN113979338A (zh) * 2021-11-19 2022-01-28 徐州建机工程机械有限公司 一种双回转塔身结构
US11866307B2 (en) 2022-04-26 2024-01-09 Caterpillar Inc. Configuration of a structural support for a boom of a pipelayer machine
USD1017647S1 (en) 2022-04-26 2024-03-12 Caterpillar Inc. Pipelayer boom

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
USRE16482E (en) * 1926-11-23 Metallic structure
US2066388A (en) * 1932-09-17 1937-01-05 Firm Edward G Budd Mfg Company Construction of metal girders
DE976777C (de) * 1953-04-25 1964-04-23 Donges Stahlbau Ges Mit Beschr Geschweisster raeumlicher Fachwerktraeger
FR1560103A (de) * 1968-04-03 1969-03-14
FR2049423A5 (de) * 1969-06-10 1971-03-26 Edilmac Spa
DE2419678A1 (de) * 1974-04-24 1975-11-06 Messerschmitt Boelkow Blohm Gittermast-konstruktion, insbesondere fuer kranausleger und aehnliche bauwerke
IT1141853B (it) * 1980-03-19 1986-10-08 Condecta Macchine Edili Srl Struttura reticolare con elementi poligonali per traliccio,particolarmente di gru a torre automontante

Also Published As

Publication number Publication date
RU2215684C2 (ru) 2003-11-10
JPH11278792A (ja) 1999-10-12
ES2221138T3 (es) 2004-12-16
FR2773550A1 (fr) 1999-07-16
DE69823973D1 (de) 2004-06-24
DE69823973T2 (de) 2005-05-25
FR2773550B1 (fr) 2000-02-18
EP0928769A1 (de) 1999-07-14

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