EP0974546B1 - Verbindungsvorrichtung für metalische Gitterelementen - Google Patents

Verbindungsvorrichtung für metalische Gitterelementen Download PDF

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Publication number
EP0974546B1
EP0974546B1 EP99420156A EP99420156A EP0974546B1 EP 0974546 B1 EP0974546 B1 EP 0974546B1 EP 99420156 A EP99420156 A EP 99420156A EP 99420156 A EP99420156 A EP 99420156A EP 0974546 B1 EP0974546 B1 EP 0974546B1
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EP
European Patent Office
Prior art keywords
socket
tower
members
base
belonging
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
EP99420156A
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English (en)
French (fr)
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EP0974546A1 (de
Inventor
Eric Pommier
Thierry Toureau
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
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Filing date
Publication date
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Publication of EP0974546A1 publication Critical patent/EP0974546A1/de
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Publication of EP0974546B1 publication Critical patent/EP0974546B1/de
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Expired - Lifetime legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02—Structures made of specified materials
    • E04H12/08—Structures made of specified materials of metal
    • E04H12/10—Truss-like structures
    • 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
    • B66C23/16—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 with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements
    • 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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/26—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
    • B66C23/28—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels
    • B66C23/283—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels with frameworks composed of assembled elements
    • B66C23/286—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail constructed to operate at successively higher levels with frameworks composed of assembled elements with locking devices

Definitions

  • the present invention relates to an assembly device removable, intended to ensure the "end-to-end" connection between members of mast elements of a tower crane, usable on construction sites of buildings.
  • the tower of such a crane is often made up of mast elements stackable, to be frequently assembled together, or separated from each other, depending on whether you wish to raise or raise the crane, or disassemble.
  • Mast elements usually of square horizontal section, each consist of four vertical corner members, joined together by two to two by a triangulation consisting of horizontal crosspieces and diagonals.
  • the mast elements When the crane is mounted, the mast elements are arranged vertically above each other, and they are rigidly connected to one another to others by their corner frames.
  • the "end-to-end" links carried out between these corner chords must ensure the continuity of the mast, as well as the transmission of longitudinal and transverse forces from various solicitations.
  • US-A-3,511,388 discloses an assembly device applying to an oblique crane boom, in which the tenon has a single transverse bore receiving a connecting pin, the attachment tenon being made on an end piece welded to the end of another arrow element.
  • a particular assembly device uses for assembly "butt" of hollow configuration members, an inner splint of cross section adapted, especially square. Fixing the splint on each chord is provided by two orthogonal connecting axes, which through bores in the splice and in the chord. The attaching the splice to the lower part of the frame of the mast element higher is thus achieved by two removable orthogonal connection axes.
  • the attachment of the splice to the upper part of the chord the lower mast element is made by two other connecting axes orthogonal which are permanently mounted, each connecting axis having a head held by a stop plate, welded to a matting plate itself previously welded outside the frame of the mast element lower, at a bore traversed by the connection axis considered.
  • the splint is thus fixed permanently to the top of the frame of the lower mast element, by pre-assembly carried out at the factory; the removable attachment, to be made on the site of use of the tower crane, relates only to the connection between the splice and the frame of the upper mast.
  • the known removable assembly device here mentioned, still has various disadvantages that the present invention proposes to remove.
  • the invention therefore aims to simplify this assembly device and make it more reliable by reducing the number of parts constituents of the device and the operations to be carried out, while improving the quality and longevity of the assembly.
  • the subject of the invention is an assembly device demountable to provide the "end-to-end" connection between chords of mast elements of a tower crane, the chords being of configuration hollow, the device consisting essentially of ribs each comprising a tenon-shaped upper portion and a portion lower part in the form of a base, the upper part forming a tenon having a cross-section adapted to the hollow inner section of the frames, and having at least two transverse bores staggered, and made according to orthogonal directions, which are intended to be traversed by axes detachable connecting links, also introduced through bores in the lower part of a chord belonging to a mast element upper, and nested on the tenon, while the lower part in the form of base, of larger cross-section than the post, is provided for be welded, by its lower face, on the upper part of a frame belonging to a lower mast element.
  • the proposed assembly device thus comprises ribs, which on the one hand are fixed permanently, by welding, on the vertices chords of the lower mast element, and on which, on the other hand, fit the lower parts of the corresponding chords of the upper mast element, removable pins providing a rigid connection, but not permanent, between the lower parts of the chords of the upper mast element and the corresponding ribs.
  • the upper mast element also plays the role lower mast element, vis-à-vis another mast element which is superimposed.
  • each splint is a molded or forged part weldable mechanical steel.
  • the base of this splint can be welded to the top of the frame, belonging to the mast element lower, by flash welding.
  • the pellet of the splint has a central recess, in the shape of a truncated warhead, which opens at the base of the base, so that this base has a section of matter that decreases continuously from its top to its base, the faces Lateral of the base thus having a decreasing thickness, from top to bottom.
  • the truncated ogive shaped recess provides a gradient of homogeneous stresses, between the weakest section, at the base of the base, and the strongest section, at the top of the pellet.
  • the lateral faces of splint comprises two outer lateral faces, the thickness of which minimum, measured at the base of the pellet, is identical to that of the wings corresponding members of the chord, belonging to the chord of the lower mast, on which is welded this base, and two lateral faces of which the minimum thickness, measured at the base of the base, is greater than that of the wings of the same frame.
  • both sides external sides are reference faces intended to ensure perfect continuity with those of the frame of the mast element lower, while the two inner lateral faces, of greater thickness, are planned to overcome the dispersion of the transverse dimensions of the chord, especially in the case where it is performed by welding of two angles along their longitudinal edges; the side faces thicker inner parts guarantee a welded section optimal, especially for an arc welding of the base on the top of the chord.
  • the expressions "outer side faces” and “faces inner side here denotes, respectively, the two lateral faces of the which appear on the outer side of the mast element concerned, and two other lateral faces of the base that appear on the inner side of the mast element concerned, the base having a total of four lateral faces, corresponding to the four sides of its square horizontal section.
  • the upper face of the base of the splint advantageously forms for the inner wings of the chord belonging to the mast element superior, a support surface of a width greater than the thickness of the wings interior of said chord.
  • the tenon of the splint comprises, in its zone of connection to the base, a throat rounded profile device, connecting to the upper face of the base which serves to support the lower end face of the chord belonging to the lower mast element.
  • This peripheral groove makes it possible to reduce the coefficient of concentration of stress, in the connection zone between the lower part of the post and the upper part of the base of the splint.
  • FIG. 1 represents two consecutive mast elements 1, superimposed, belonging to a tower crane mast.
  • Each mast element 1 has a horizontal section of generally square shape, and includes four corner members 2, arranged vertically and joined in pairs, on the four lateral faces of the mast element 1, by a triangulation composed of horizontal crosspieces 3 and diagonals 4.
  • Each frame 2 is advantageously formed by two angles united by welding, along their longitudinal edges so as to constitute a tubular section of substantially square horizontal section, whose orientation is similar to that of the square section of the mast element 1.
  • the frames 2 of the mast elements 1 thus have upper and lower extremities open, and they are assembled at means of splice 5, belonging to the demountable assembly device making the subject of the invention.
  • Each splint 5, shown in detail in FIG. 2 is a cast or forged part made of weldable mechanical steel, which comprises a upper portion 6 shaped tenon, and a lower portion 7 shaped pellet.
  • the upper part 6 forming tenon has a section horizontal, generally square shape, its upper end presenting a central tip 8 and chamfers 9.
  • This upper part 6 of the splint 5 has two bores 10 and 11 identical and superimposed, made according to two orthogonal horizontal directions.
  • the axis geometry of the lower bore 10 cuts perpendicularly the two opposite vertical faces 12 of the post 6, from one face to the other, and the axis geometry of the upper bore 11 cuts perpendicularly the two other opposite side faces 13, from one face to the other.
  • the axes two bores 10 and 11 are offset vertically, one compared to the other, of a height greater than the diameter of these bores.
  • Each of the bores 10 and 11 has, in the direction of its geometric axis, two successive parts of diameters slightly separate from each other by an inner annular shoulder, respectively 14 and 15.
  • the post 6 comprises, on one of its vertical edges, a clearance forming a flat 16, intended to receive inscriptions identification of the splint 5 and its characteristics, with a view to "Traceability”.
  • the tenon comprises at its base, in its zone of connection to the base 7, a peripheral groove 17 of rounded profile, of which the shape and the dimensions make it possible to reduce the coefficient of concentration of stress at the connection between the lower part of the tenon 6 and the upper part of the base 7.
  • the base 7 has a horizontal section of general shape square, larger than the section of the post 6, and has a recess central 18, which opens at the base of this base 7.
  • the recess 18 of the base 7 has the shape of a truncated warhead, so that this pellet 7 has a section of horizontal matter that passes gradually from a maximum value, at the peak of base 7, to a minimum value, at base of this base 7.
  • the upper horizontal face 19 of the base 7, surrounding the throat 17, is erected and constitutes a perfectly flat bearing surface for the lower end face of the chord 2 of the mast element 1 superior, itself erect (see also Figure 3). It will be noted that from the of the two inner wings of this chord 2, the upper face 19 of the base 7 has a width L greater than the thickness of the inner wings of said chord 2.
  • the lower horizontal face 20 of the base 7 is welded, in particular by sparking, on the upper end face of the chord 2 of the lower mast element 1.
  • the four lateral faces of the base 7 comprise two faces outer sides 21 (i.e. the faces that appear on the side outside of the mast element 1), and two inner lateral faces 22. Given the ogival shape of the recess 18, all these faces Laterals 21 and 22 have a decreasing thickness, from top to bottom.
  • the two outer lateral faces 21 of the base 7 have, at their base, a thickness e identical to that of the outer wings corresponding to frame 2 of the mast element 1.
  • These faces outer lateral portions 21 constitute reference surfaces, disposed in perfect continuity with the corresponding surfaces of chord 2 of the mast element 1.
  • the two inner lateral faces 22 of the base 7 have, at their base, a thickness E greater than that of the inner wings the corresponding members of frame 2 of the mast element 1. This thickness E more important to compensate for the dispersion of dimensions cross-sections of the membrane 2, in particular in the case where it is formed by the meeting of two angles, and it guarantees a section of optimum welding for spark welding of the cap 7 on the face upper end of the chord 2 of the lower mast element 1.
  • each frame 2 of the upper mast element 1 is supported on the face upper 19 of the base 7 of the corresponding splice 5, welded to a frame 2 of the lower mast element 1.
  • Each link axis 25 or 26 comprises successively, from one end to the other: an enlarged head, a cylindrical part of more large diameter (corresponding to the larger diameter part of the bore 10 or 11 of the post 6), a cylindrical part of smaller diameter (corresponding to the smaller diameter part of the bore 10 or 11), and a frustoconical end portion.
  • Removable organs are still provided for immobilisation in translation and possibly in rotation of each link axis 10 or 11.
  • the ogive-shaped recess truncated 18 of the base 7 makes it possible to obtain a stress gradient homogeneous, between the weakest horizontal section (at the base of the base) and the strongest horizontal section (at the top of the base).
  • each mast element 1 comprising, as described above, four fishplates 5 whose pellets 7 are welded to the vertices of four members 2 of this mast element 1.
  • connection axes 25 and 26 are removed, after withdrawal of their means immobilization, which allows the lifting of members 2 belonging to to the upper mast element 1, and their dislocation relative to the pins 6 ribs 5, which remain in place at the tops of the ribs 2 of the lower mast element 1.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Transportation (AREA)
  • Civil Engineering (AREA)
  • Jib Cranes (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Revetment (AREA)
  • Artificial Fish Reefs (AREA)

Claims (7)

  1. Lösbare Zusammenbau-Vorrichtung, die dazu dient, die "End-zu-End"-Verbindung zwischen Streben (2) von Mastelementen (1) eines Turmdrehkrans herzustellen, wobei die Streben (2) eine hohle Form haben, dadurch gekennzeichnet, dass die Vorrichtung aus Verbindungsteilen (5) besteht, von denen jedes einen oberen Teil (6) in Zapfenform und einen unteren Teil (7) in Sockelform umfasst, und wobei der obere zapfenförmige Teil (6) einen Querschnitt besitzt, der dem inneren hohlen Querschnitt der Streben (2) angepasst ist, und mindestens zwei versetzte Querbohrungen (10, 11) aufweist, die in senkrecht zueinander stehenden Richtungen ausgeführt sind, und vorgesehen sind, um herausnehmbare Verbindungsstifte (25, 26) hindurchzustecken, die auch durch Bohrungen (23) hindurch eingeführt werden, die im unteren Teil einer Strebe (2) angeordnet sind, die zu einem oberen Mastelement (1) gehört, und die vorgesehen ist, um auf den Zapfen (6) aufgesetzt zu werden, während der untere Teil (7) in Sockelform mit einem größeren Querschnitt als der des Zapfens (6) dazu vorgesehen ist, um mit seiner unteren Fläche (20) auf den oberen Teil einer Strebe (2), die zu einem unteren Mastelement (1) gehört, geschweisst zu werden.
  2. Lösbare Vorrichtung für den Zusammenbau von Mast-Streben eines Turmdrehkrans nach Anspruch 1, dadurch gekennzeichnet, dass der Sockel (7) des Verbindungsteils (5) eine zentrale Aussparung (18) in Form eines abgestumpften Spitzkegels hat, der zur Basis des Sockels (7) hin offen ist, so dass dieser Sockel (7) einen Materialquerschnitt besitzt, der von der Spitze zur Basis hin abnimmt, wodurch die Seitenflächen (21, 22) des Sockels (7) eine von oben nach unten abnehmende Dicke aufweisen.
  3. Lösbare Vorrichtung für den Zusammenbau von Mast-Streben eines Turmdrehkrans nach Anspruch 2, dadurch gekennzeichnet, dass die Seitenflächen des Sockels (7) des Verbindungsteils (5) zwei äußere Seitenflächen (21) haben, deren Minimaldicke (e), gemessen an der Basis des Sockels (7), so beschaffen ist, dass sie gleich derjenigen der entsprechenden Wände der Strebe (2) ist, die zum unteren Mastelement (1) gehört, auf die dieser Sockel (7) geschweisst ist, sowie zwei innere Seitenflächen (22) haben, deren Minimaldicke (E), gemessen an der Basis des Sockels (7), so beschaffen ist, dass sie größer ist als diejenige der Wände der gleichen Strebe (2).
  4. Lösbare Vorrichtung für den Zusammenbau von Mast-Streben eines Turmdrehkrans nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die obere Fläche (19) des Sockels (7) des Verbindungsteils (5) eine Auflagefläche für die inneren Wände der zum oberen Mastelement (1) gehörenden Strebe (2) bildet, deren Breite (L) größer ist als die Dicke (e) der inneren Wände dieser Strebe (2).
  5. Lösbare Vorrichtung für den Zusammenbau von Mast-Streben eines Turmdrehkrans nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Zapfen (6) des Verbindungsteils (5) in seinem Verbindungsbereich mit dem Sockel (7) eine periphere Hohlkehle (17) mit abgerundetem Profil hat, die anschließt an die obere Fläche (19) des Sockels (7), die als Auflage für die untere Endfläche der Strebe (2) dient, die zum oberen Mastelement (1) gehört.
  6. Lösbare Vorrichtung für den Zusammenbau von Mast-Streben eines Turmdrehkrans nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Verbindungsteil (5) ein schweissbares, gegossenes oder geschmiedetes Teil aus Maschinenbau-Stahl ist.
  7. Lösbare Vorrichtung für den Zusammenbau von Mast-Streben eines Turmdrehkrans nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Sockel (7) des Verbindungsteils (5) vorgesehen ist, um auf den oberen Teil der Strebe (2), die zum unteren Mastelement (1) gehört, durch Elektro-Stumpfschweissen geschweisst zu werden.
EP99420156A 1998-07-24 1999-07-08 Verbindungsvorrichtung für metalische Gitterelementen Expired - Lifetime EP0974546B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9809721A FR2781535B1 (fr) 1998-07-24 1998-07-24 Dispositif d'assemblage de membrures de charpente metallique en treillis
FR9809721 1998-07-24

Publications (2)

Publication Number Publication Date
EP0974546A1 EP0974546A1 (de) 2000-01-26
EP0974546B1 true EP0974546B1 (de) 2005-01-05

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Application Number Title Priority Date Filing Date
EP99420156A Expired - Lifetime EP0974546B1 (de) 1998-07-24 1999-07-08 Verbindungsvorrichtung für metalische Gitterelementen

Country Status (7)

Country Link
EP (1) EP0974546B1 (de)
JP (1) JP2000169084A (de)
KR (1) KR100627863B1 (de)
DE (1) DE69923038T2 (de)
ES (1) ES2234230T3 (de)
FR (1) FR2781535B1 (de)
RU (1) RU2222488C2 (de)

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ES2556614T3 (es) * 2013-02-14 2016-01-19 Manitowoc Crane Group France Dispositivo de embridado para unir dos elementos de mástil y conjunto que comprende dos elementos de mástil y dispositivos de embridado de este tipo
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
FR3014509B1 (fr) * 2013-12-11 2016-01-01 Manitowoc Crane Group France Dispositif d’eclissage pour lier deux elements structurels d’une grue a tour
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RU2645319C1 (ru) * 2016-12-20 2018-02-20 федеральное государственное бюджетное образовательное учреждение высшего образования "Ульяновский государственный технический университет" Узловое соединение стержней п-образного сечения пространственной конструкции
CN107010547A (zh) * 2017-05-09 2017-08-04 徐州建机工程机械有限公司 一种塔机新型片节结构
CN107503558A (zh) * 2017-08-30 2017-12-22 重庆标王机械设备有限公司 一种组合式塔架的钢结构塔体标准节
CN107555327A (zh) * 2017-10-26 2018-01-09 河北九通重工股份有限公司 一种便于运输拆装的塔机标准节
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EP3778465A4 (de) * 2018-05-18 2022-03-09 Kobelco Construction Machinery Co., Ltd. Gitterstruktur, gitterstrukturkopplungskörper, arbeitsmaschine und verbinder
JP6870692B2 (ja) 2018-05-18 2021-05-12 コベルコ建機株式会社 ラチス構造物、ラチス構造物連結体、作業機械、及びコネクタ
IT201900005782A1 (it) * 2019-04-15 2020-10-15 Fin Group S R L Dispositivo di sollevamento trasportabile
CN110230254B (zh) * 2019-06-25 2021-02-12 浙江中锐新材料科技有限公司 一种钢桁架桥梁装配式节点连接结构
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DE2337769A1 (de) * 1973-07-25 1975-02-06 Werner Dipl Ing Weissmann Zusammensetzbare mastteile fuer turmdrehkrane
DE3936257C2 (de) * 1989-10-31 1999-04-08 Man Ghh Logistics Bolzenverbindung für Eckstiele eines Kranturms
FR2680813B1 (fr) 1991-08-30 1995-10-20 Potain Sa Dispositif d'assemblage demontable pour elements de charpente metallique.

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DE69923038T2 (de) 2005-12-15
JP2000169084A (ja) 2000-06-20
EP0974546A1 (de) 2000-01-26
KR100627863B1 (ko) 2006-09-25
DE69923038D1 (de) 2005-02-10
FR2781535B1 (fr) 2000-08-25
RU2222488C2 (ru) 2004-01-27
KR20000016964A (ko) 2000-03-25
ES2234230T3 (es) 2005-06-16
FR2781535A1 (fr) 2000-01-28

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