EP0928769A1 - Elément de flèche pour grue à tour - Google Patents
Elément de flèche pour grue à tour Download PDFInfo
- Publication number
- EP0928769A1 EP0928769A1 EP98420243A EP98420243A EP0928769A1 EP 0928769 A1 EP0928769 A1 EP 0928769A1 EP 98420243 A EP98420243 A EP 98420243A EP 98420243 A EP98420243 A EP 98420243A EP 0928769 A1 EP0928769 A1 EP 0928769A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- triangulation
- segments
- module
- tower crane
- boom 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.)
- Granted
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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
Definitions
- the present invention relates to the field of tower cranes and it relates, more particularly, to a lattice boom element for tower crane.
- an arrow of tower crane is made up of a succession of elements of arrow, aligned and assembled to each other of so as to constitute an arrow of the desired length.
- Each boom element is a beam-like structure lattice, triangular, rectangular or trapezoidal, which includes members defining two at two of the planar faces, the members being connected between they, in these faces, by pieces of the bar kind forming a triangulation.
- the lattice boom elements are made from commercial open or closed sections, such as tubes round or square section - see for example the request German patent 2419678. This kind of realization does not not optimize the boom elements, in particular in terms of their weight and operations construction.
- tower cranes which have mast elements whose members are made of folded sheet metal with variable section over the height of these elements, at least with regard to the members rear, triangulation of the faces of the mast elements being made by diagonals in bar or tube - see French patent 2049423 showing a decrease in stages.
- present invention aims to provide a boom element for tower cranes, the structure and method of obtaining allow optimization especially in terms of reduction in the weight of the element, for equal or even improved mechanical characteristics, while simplifying and streamlining manufacturing industrial of this element.
- the present invention has essentially for an arrow element in tower crane truss, including members defining two by two planar faces, and parts connecting together the members in each of these faces to form a triangulation, the arrow element being characterized in that said parts are constituted by triangulation modules produced each from a cut sheet and possibly folded, each triangulation module comprising at least two straight segments connected to each other in forming at least one angle, this triangulation module being designed to be assembled to members, in particular by welding, at the free ends of its segments and at its or its corner areas.
- the different segments of the triangulation can be of constant section or have, at least for some of them, a section variable over the length of the segment concerned.
- each triangulation module is made from a sheet folded in the direction longitudinal segments of this module, or at least some of the said segments, so as to constitute segments shaped into angles.
- each triangulation module may have, at the free ends of its segments and in its corner area (s), a cut creating a lateral clearance, facilitating access for welding this triangulation module on the members.
- triangulation modules can have various configurations.
- each triangulation module has a configuration in "V", resulting from two segments connected in a 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 of three segments successively connected in two zones angle.
- the members of the element of arrow are, like the triangulation modules, made from cut and folded sheets.
- These members are, advantageously, of variable section over the length of the arrow element and, more particularly, of section decreasing from one end to the other of the member.
- the members are, like the triangulation modules, made of cut sheet metal and folded, we have great freedom of design in the choice of the shape of the upper member (s) and lower members, as well as the thickness of the constituent sheet.
- the principle of the invention allows, for different segments of a triangulation module, the choice a cross-section of surface and quadratic moment adapted and possibly variable, for example by performing segments of variable section by appropriate cutting of sheet metal, or by choosing to make segments in sheet metal folded or not; folding allows here, in particular, to vary the quadratic moment, while the shape of the cutting allows in particular to distribute the material of the segments of the triangulation modules so as to remove the lateral offset of the neutral fibers of these modules by compared to the neutral fiber of the members.
- the principle of the invention also allows a free choice of the form of modules: variable angle between segments, segments of different lengths and / or sections, V-shaped, "M” or “Z” as defined above, adaptation of shapes and dimensions of the corner areas used for the production of welded connections with the members, this to solve fatigue problems and to master the eccentricities of the neutral fibers.
- the invention makes it possible to optimize the management of the production of the boom 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 reduction in the number of parts required, since only one triangulation module realizes the equivalent of two or more diagonals traditional, each segment of a corresponding module to a diagonal; and limiting the operations of transformation to three types of operations: cutting, folding and welding, which can be automated.
- Figures 1 to 5 show an arrow element for tower crane, triangular section.
- the element of boom includes a top chord 1, and two lower members 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 arrow element, and a lower face, in particular horizontal.
- the upper chord 1 is made of cut and folded sheet metal, in particular of steel with an elastic limit greater than 360 N / mm 2 .
- the upper member 1 has an inverted "V" section, this section being continuously variable over the length of the member and, more particularly, decreasing from one of its ends to the other end (see FIG. 3, and also compare Figures 4 and 5).
- the two lower members 2 and 3 forming a raceway for a carriage are also made of cut and folded sheet metal, in particular of steel with an elastic limit greater than 360 N / mm 2 .
- Each lower member 2 or 3 has a rectangular section, continuously variable over the length of this member and, more particularly, decreasing in height from one end to the other end (see Figure 3, and also compare Figures 4 and 5 ).
- connecting 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 yoke and, at the other end, a connecting end piece 6 forming a tenon.
- the lower members 2 and 3 each carry, at their respective ends, connecting end pieces 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 triangulation 9 has a "V" configuration.
- Each triangulation module 9 is made in sheet cut and then folded, Figure 6 showing the shape of the cut sheet before folding, while figure 7 shows the final configuration of the module triangulation 9, as obtained after folding the sheet.
- the sheet metal is folded, on the first segment 10, along a longitudinal fold line 13 and, on the second segment 11, along a fold line longitudinal 14. After folding, the two segments 10 is 11 thus have an angle conformation.
- the sheet At the free ends of the two segments 10 and 11, as in corner area 12, the sheet includes special cutouts 15, 16, 17 and 18, angled re-entering, which define lateral clearances.
- the segments of the triangulation module 9 can have a variable section (with narrowing or widening) along their length.
- the mounting of the triangulation modules 9 is such that the area angle 12 of each module 9 is connected to the frame upper 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.
- a certain number of triangulation modules 9 are so successively mounted, along the length of the element arrow, the end of the second segment 11 of a module 9 being close to the end of the first segment 10 of the next module 9.
- each triangulation module 9 on the members 1, 2, 3 is produced by welding.
- the corner area 12 of each module 9 has a width suitable for the welded connection with one of the two wings of the upper member 1.
- the lateral clearances 15, 16, 17 and 18, located at level connections of each triangulation module 9 with the frames 1, 2, 3, allow easy access for the welding torch.
- each triangulation module 9 has 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 length, the module of triangulation thus being made symmetrical.
- Figure 8 shows a triangulation module 9 ' in the general shape of "M", which has two segments straight lines 10 and 11 connected together in a zone of angle 12, and a third rectilinear segment 19, located between the two previous segments 10 and 11 and connected, he too, at corner area 12, here relatively lying down.
- the third segment 19 is not folded longitudinally, and thus retains a configuration flat.
- Figure 9 shows a 9 '' triangulation module in general "Z" shape, which has a first segment straight 20 folded longitudinally, a second segment straight 21 connected to the first in a first zone angle 22 and a third straight segment 23 connected to the previous one in a second corner area 24.
- the triangulation modules 9 'and 9' ' are still made from sheets cut and folded.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
Description
- par des modifications de formes des modules de triangulation, telles que modification de l'angle de modules en "V", ou constitution de modules en "W", ou encore combinaison des formes précédemment décrites ;
- par une utilisation des mêmes modules de triangulation associée à des membrures classiques (et non pas constituées en tôle découpée et pliée) ;
- par une application de l'invention à des flèches de grue de section non triangulaire, mais rectangulaire ou trapézoïdale, auquel cas les modules de triangulation sont disposés sur les quatre faces de chaque élément de flèche, à savoir les deux faces latérales, la face supérieure et la face inférieure.
Claims (9)
- Elément de flèche en treillis pour grue à tour, comprenant des membrures (1,2,3) définissant deux à deux des faces planes, et des pièces reliant entre elles les membrures dans chacune de ces faces pour former une triangulation, caractérisé en ce que lesdites pièces sont constituées par des modules de triangulation (9,9'9'') réalisés chacun à partir d'une tôle découpée et éventuellement pliée, chaque module de triangulation comprenant au moins deux segments rectilignes (10,11; 10,11,19; 20,21,23) raccordés l'un à l'autre en formant au moins un angle (12; 22,24), ce module de triangulation (9,9',9'') étant prévu pour être assemblé aux membrures (1,2,3), notamment par soudage, aux extrémités libres de ses segments (10,11; 10,11,19; 20,23) ainsi qu'à sa ou ses zones d'angle (12; 22,24).
- Elément de flèche pour grue à tour selon la revendication 1, caractérisé en ce que les segments (10,11; 10,11,19; 20,21,23) des modules de triangulation (9,9',9'') possèdent, au moins pour certains d'entre eux, une section variable sur la longueur du segment concerné.
- Elément de flèche pour grue à tour selon la revendication 1 ou 2, caractérisé en ce que chaque module de triangulation (9,9',9'') est réalisé à partir d'une tôle pliée (en 13,14) suivant la direction longitudinale des segments (10,11) de ce module, ou de certains desdits segments (20,23), de manière à constituer des segments conformés en cornière.
- Elément de flèche pour grue à tour selon l'une quelconque des revendications 1 à 3, caractérisé en ce que chaque module de triangulation (9,9',9'') comporte, aux extrémités libres de ses segments (10,11) et dans sa ou ses zones d'angle (12; 22,24), une découpe (15,16,17,18) créant un dégagement latéral, facilitant l'accès pour le soudage de ce module de triangulation (9,9',9'') sur les membrures (1,2,3).
- Elément de flèche pour grue à tour selon l'une quelconque des revendications 1 à 4, caractérisé en ce que chaque module de triangulation (9) possède une configuration en "V", résultant de deux segments (10,11) raccordés dans une zone d'angle unique (12).
- Elément de flèche pour grue à tour selon l'une quelconque des revendications 1 à 4, caractérisé en ce que chaque module de triangulation (9') possède une configuration en "M", résultant de trois segments (10,11,19) raccordés dans une zone d'angle commune (12).
- Elément de flèche pour grue à tour selon l'une quelconque des revendications 1 à 4, caractérisé en ce que chaque module de triangulation (9'') possède une configuration en "Z", résultant de trois segments (20,21,23) successivement raccordés en deux zones d'angle (22,24).
- Elément de flèche pour grue à tour selon l'une quelconque des revendications 1 à 7, caractérisé en ce que ses membrures (1,2,3) sont, comme les modules de triangulation (9,9',9''), réalisées à partir de tôles découpées et pliées.
- Elément de flèche pour grue à tour selon la revendication 8, caractérisé en ce que les membrures (1,2,3) en tôle découpée et pliée sont de section variable sur la longueur de l'élément de flèche, et plus particulièrement de section décroissante d'une extrémité (5,7) à l'autre extrémité (6,8) de la membrure (1,2,3).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9800390 | 1998-01-12 | ||
FR9800390A FR2773550B1 (fr) | 1998-01-12 | 1998-01-12 | Element de fleche pour grue a tour |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0928769A1 true EP0928769A1 (fr) | 1999-07-14 |
EP0928769B1 EP0928769B1 (fr) | 2004-05-19 |
Family
ID=9521817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19980420243 Expired - Lifetime EP0928769B1 (fr) | 1998-01-12 | 1998-12-21 | Elément de flèche pour grue à tour |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0928769B1 (fr) |
JP (1) | JPH11278792A (fr) |
DE (1) | DE69823973T2 (fr) |
ES (1) | ES2221138T3 (fr) |
FR (1) | FR2773550B1 (fr) |
RU (1) | RU2215684C2 (fr) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2838416A1 (fr) * | 2002-04-16 | 2003-10-17 | Potain Sa | Triangulation d'une poutre en treillis, notamment d'un element de fleche pour grue a tour |
GB2401699A (en) * | 2001-12-20 | 2004-11-17 | Caterpillar Inc | A method of manufacturing a load bearing member and determining the effects of heat caused by welding |
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 |
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". |
CN103420283A (zh) * | 2012-05-18 | 2013-12-04 | 李宜君 | 塔式起重机的动臂结构 |
WO2014056809A1 (fr) * | 2012-10-09 | 2014-04-17 | Demag Cranes & Components Gmbh | Pont roulant, notamment sous forme de pont ou de portique, comportant au moins deux poutres |
WO2014056808A1 (fr) * | 2012-10-09 | 2014-04-17 | Demag Cranes & Components Gmbh | Pont roulant, notamment sous forme de pont ou de portique, comportant au moins une poutre |
WO2014166579A1 (fr) * | 2013-04-08 | 2014-10-16 | Liebherr-Werk Biberach Gmbh | Grue comprenant des flèches longitudinales avec des jonctions sans soudure entre les sections transversales des flèches |
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 |
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 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 (fr) * | 2019-07-04 | 2021-01-07 | コベルコ建機株式会社 | Structure de treillis et machine de travail |
USD1017647S1 (en) | 2022-04-26 | 2024-03-12 | Caterpillar Inc. | Pipelayer boom |
US11866307B2 (en) | 2022-04-26 | 2024-01-09 | Caterpillar Inc. | Configuration of a structural support for a boom of a pipelayer machine |
Citations (7)
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 (fr) * | 1968-04-03 | 1969-03-14 | ||
FR2049423A5 (fr) * | 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 |
FR2478606A1 (fr) * | 1980-03-19 | 1981-09-25 | Condecta Ag | Pylone en treillis pour grues |
-
1998
- 1998-01-12 FR FR9800390A patent/FR2773550B1/fr not_active Expired - Fee Related
- 1998-12-21 ES ES98420243T patent/ES2221138T3/es not_active Expired - Lifetime
- 1998-12-21 EP EP19980420243 patent/EP0928769B1/fr not_active Expired - Lifetime
- 1998-12-21 DE DE69823973T patent/DE69823973T2/de not_active Expired - Lifetime
- 1998-12-24 JP JP36822098A patent/JPH11278792A/ja active Pending
- 1998-12-30 RU RU98123828A patent/RU2215684C2/ru not_active IP Right Cessation
Patent Citations (7)
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 (fr) * | 1968-04-03 | 1969-03-14 | ||
FR2049423A5 (fr) * | 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 |
FR2478606A1 (fr) * | 1980-03-19 | 1981-09-25 | Condecta Ag | Pylone en treillis pour grues |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2401699A (en) * | 2001-12-20 | 2004-11-17 | Caterpillar Inc | A method of manufacturing a load bearing member and determining the effects of heat caused by welding |
GB2401699B (en) * | 2001-12-20 | 2005-05-25 | Caterpillar Inc | Load bearing member arrangement and method |
FR2838416A1 (fr) * | 2002-04-16 | 2003-10-17 | Potain Sa | Triangulation d'une poutre en treillis, notamment d'un element de fleche pour grue a tour |
EP1354841A1 (fr) * | 2002-04-16 | 2003-10-22 | Potain | Triangulation d'une poutre en treillis, notamment d'un élément de flèche pour grue à tour |
US6871469B2 (en) | 2002-04-16 | 2005-03-29 | Potain | Triangulation of a lattice girder, in particular of a jib element for a tower crane |
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 |
WO2014056809A1 (fr) * | 2012-10-09 | 2014-04-17 | Demag Cranes & Components Gmbh | Pont roulant, notamment sous forme de pont ou de portique, comportant au moins deux poutres |
WO2014056808A1 (fr) * | 2012-10-09 | 2014-04-17 | Demag Cranes & Components Gmbh | Pont roulant, notamment sous forme de pont ou de portique, comportant au moins une poutre |
CN104781179A (zh) * | 2012-10-09 | 2015-07-15 | 特雷克斯有限公司 | 具有至少一个起重机梁的起重机,特别是桥式起重机或者高架起重机 |
US9751730B2 (en) | 2012-10-09 | 2017-09-05 | Terex Mhps Gmbh | Crane, in particularly overhead crane or gantry crane, comprising at least two crane girders |
US9790060B2 (en) | 2012-10-09 | 2017-10-17 | Terex Mhps Gmbh | Crane, in particular overhead crane or gantry crane, comprising at least one crane girder |
CN104781179B (zh) * | 2012-10-09 | 2018-01-23 | 特雷克斯有限公司 | 具有至少一个起重机梁的起重机,特别是桥式起重机或者高架起重机 |
WO2014166579A1 (fr) * | 2013-04-08 | 2014-10-16 | Liebherr-Werk Biberach Gmbh | Grue comprenant des flèches longitudinales avec des jonctions sans soudure entre les sections transversales des flèches |
EP3184478A1 (fr) * | 2013-04-08 | 2017-06-28 | Liebherr-Werk Biberach GmbH | Grue |
EP3187453A1 (fr) * | 2013-04-08 | 2017-07-05 | Liebherr-Werk Biberach GmbH | Grue |
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 |
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 |
Also Published As
Publication number | Publication date |
---|---|
DE69823973T2 (de) | 2005-05-25 |
EP0928769B1 (fr) | 2004-05-19 |
JPH11278792A (ja) | 1999-10-12 |
ES2221138T3 (es) | 2004-12-16 |
FR2773550B1 (fr) | 2000-02-18 |
DE69823973D1 (de) | 2004-06-24 |
RU2215684C2 (ru) | 2003-11-10 |
FR2773550A1 (fr) | 1999-07-16 |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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