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EP0376417A1 - Connexion à plusieurs broches - Google Patents

Connexion à plusieurs broches Download PDF

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Publication number
EP0376417A1
EP0376417A1 EP89250106A EP89250106A EP0376417A1 EP 0376417 A1 EP0376417 A1 EP 0376417A1 EP 89250106 A EP89250106 A EP 89250106A EP 89250106 A EP89250106 A EP 89250106A EP 0376417 A1 EP0376417 A1 EP 0376417A1
Authority
EP
European Patent Office
Prior art keywords
hook
bolt connection
connection according
bolt
stop
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
EP89250106A
Other languages
German (de)
English (en)
Other versions
EP0376417B1 (fr
Inventor
Hermann Franzen
Walter Köllner
Dieter Klessinger
Joachim Kröll
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6369539&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0376417(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0376417A1 publication Critical patent/EP0376417A1/fr
Application granted granted Critical
Publication of EP0376417B1 publication Critical patent/EP0376417B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths

Definitions

  • the invention relates to multi-section bolt connections, in particular for crane boom parts which are preferably designed in a lattice construction.
  • Such bolt connections are known for example from DE-PS 37 06 301 and are used, among other things, to connect boom sections, in particular lattice tower parts, so-called bolt joints being welded to the belt tubes.
  • the connections are usually made in three parts and each consist of a fork piece, a bracket piece and a bolt.
  • the respective fork piece with the associated bracket piece When assembling the boom parts or shots, the respective fork piece with the associated bracket piece must first be aligned with its bores, and then a bolt must be inserted or hammered in. At each connection point there are four of these three-part connections, namely two in the upper and two in the lower flange.
  • the bolts in the upper belt level can usually only be reached with the help of a work platform, which increases the assembly effort even further.
  • the invention is therefore based on the object to improve a multi-section bolt connection of the type mentioned in such a way that it can be assembled not only faster but also more securely, in particular the necessary insertion or insertion of bolts is facilitated.
  • this idea is realized according to the invention by at least one pair of stops.
  • the idea of the solution consists essentially in that the bracket piece in the fork piece in the plane perpendicular to its bore axis is almost positively brought to a stop in such a way that the bores are then aligned with the fork piece and bracket piece and the respective bolt can be inserted without difficulty.
  • the inventive self-centering limitation of a degree of freedom of movement by at least one pair of stops is preferably by at least one hook-shaped stop of at least one pair of stops (hook stop) achieved, wherein in a further embodiment of the invention for each pair of stops having a hook-shaped stop a push block corresponding to the hook or a counter pressure surface belongs.
  • the hook-shaped stop or the hook is preferably provided on the bracket side of the connection, while the push block corresponding to the hook or the counter pressure surface is provided on the fork side.
  • the hook and push block or counter pressure surface can also be integrated into the bracket piece or fork piece. In any case, an exact fixation of the connection point of the boom parts to be connected is achieved through the assignment of the stop pairing according to the invention.
  • the assembly time can be optimized not least by the fact that the work platform mentioned at the outset, which is necessary to reach the bolts in the upper belt level, is generally eliminated.
  • Two pairs of stops are expediently provided in the upper chord level of each boom joint.
  • An even better fixation of the joint can be achieved by additionally providing at least one pair of stops consisting of two flat surfaces (surface stop), so that, in a preferred embodiment, two hook stops in the top flange level and two surface stops in the bottom flange level of each boom joint for easy assembly and also take care of disassembly.
  • the lattice mast parts can be very easily through the hook stops provided in the upper belt level, and preferably one each in the two corners of the upper belt level to be connected in the joint area, that is to say at the ends of the belt tubes to be connected thereby bring into the aligned position of the holes for the bolts to be brought in position that first the hook stops are brought into engagement, and because of the hook-shaped design of the bracket pieces, the bolts are inserted into the associated fork pieces before assembly, that is, they need to be in the Upper belt level only to be "hooked in”.
  • the third degree of freedom is then finally limited, namely by these surface stops, i.e. In the stretched, aligned position of the lattice tower parts to be connected, the surfaces forming the respective surface stop, which are provided on the fork piece and correspondingly on the bracket piece, then lie against one another in the lower chord plane in such a way that the bolt now only has to be inserted or effortlessly hammered in needs.
  • each stop pair On the respective To provide bracket piece or to form from this in a preferred embodiment, ie the bracket piece itself forms the hook instead of a hole closed on all sides.
  • the one surface of each surface stop is preferably formed by an end flattening on the bracket piece and the other surface is provided in the foot of the fork piece of this surface stop.
  • the hook or hooks of each pair of stops are deformed on the end face to form a stop pressure surface, which in the assembled state is preferably essentially vertical and the corresponding counter pressure surface provided in the foot of the fork piece lies flat.
  • a further improvement in the transmission of compressive forces in the upper chord plane can be achieved if the flat counter-pressure surface merges from the center of the boom into a concave surface which, in its curvature, matches the outer contour of the hook associated with it and which, when assembled, fits snugly against the outer surface of the hook end , with the hooks pointing away from the middle of the boom.
  • the hooks should wrap around the associated bolt by between 90 o and 180 o in the assembled state, preferably on the side facing the counter pressure surface when arranged in the top flange level up to above the horizontal diameter of the bolt and when arranged in the lower chord level to below the horizontal diameter.
  • Fig. 1 two interconnected boom sections 1 and 2 are shown with their ends carrying the bolt connections in a side view.
  • Fig. 2 which shows a section through the upper belt level
  • the invention according to a first embodiment consists of normal bolt joints, each formed from a fork piece 3 and a bracket piece 4, whereby to complete the bolt joint connection, each bolt 5 (in the exemplary embodiment shown overall four pieces for this connection point) are required.
  • the upper and lower chord tubes 7 and 8 connecting cross struts are designated.
  • the bolt connection described so far is conventional, ie the four bolts must each be aligned with the Bores of the respective fork and bracket pieces to be brought into position must be used as exclusively load-bearing or force-transmitting parts of the conventionally large dimensions, unless a four-section or multi-section connection would be provided instead of the illustrated two-section connection.
  • the embodiment according to FIGS. 1 and 2 has a pair of stops in the upper belt level in a first embodiment of the invention, which is designed as a hook stop and, in the exemplary embodiment shown, consists of one on the top of the upper belt tubes 7 in the region of the end of the boom section 2 is welded or otherwise permanently attached to the hook 9, the hook-shaped free end 9a of which extends above the fork side of the section 1 and engages behind a push block 11 attached to the top of each top chord tube.
  • the invention provides for a further pair of stops in the area of the lower chord tubes, specifically as a flat stop, which consists of a flat end face 12 of the bracket pieces and one with the flattening 12 corresponding and this in the assembled state flat surface 13 in the foot of the fork pieces 3 of the lower flange level.
  • a flat stop which consists of a flat end face 12 of the bracket pieces and one with the flattening 12 corresponding and this in the assembled state flat surface 13 in the foot of the fork pieces 3 of the lower flange level.
  • FIGS. 3 to 5 A further development of the connection described above in FIGS. 1 and 2 is shown in FIGS. 3 to 5, the hook according to the invention being integrated with the corresponding thrust block in the stirrup or fork pieces of the upper belt level in such a way that a bolt connection is produced , which are aligned in their outer contours with the outer contours of the stirrup and fork pieces, and thus do not extend beyond the upper edge of the upper chord tubes. This prevents damage to the respective hook stop.
  • This stop version is structured as follows:
  • the lower chord level is constructed essentially as in the exemplary embodiment according to FIGS. 1 and 2, i.e. a total of two surface stops are provided as stop pairs, in the area of each lower flange tube, one with a surface and the corresponding surface on the associated lower flange 8 of the weft end of the other boom part to be connected.
  • a total of two surface stops are provided as stop pairs, in the area of each lower flange tube, one with a surface and the corresponding surface on the associated lower flange 8 of the weft end of the other boom part to be connected.
  • the hook stop in the upper belt level is integrated into the conventional bolt connection.
  • the component fulfilling the hook function consists of an upper side, in the white substantial T-shaped extension 14 of the bracket piece 15 attached to the upper chord tube 7 of the boom section 2 (see in particular FIG. 5), so that there is a shoulder (perpendicular to the longitudinal axis of the upper chord pipes 7 aligned in the assembled state of the two sections 1 and 2 to be connected (end-sided Section of the T-piece) results, which fits into a corresponding, top-side recess 16 in the foot region of the fork piece 17 shown in broken lines.
  • the recess 16 narrows slightly conically towards its base and the T-extension has correspondingly inclined fitting surfaces, of which the bolts 5 not shown in FIG. 5 Receiving holes 18 facing surface 19 represents the hook-shaped stop of the bracket piece according to the invention or takes over its function, while the opposite surface 20 of the recess 16 of the fork piece 17 forms the thrust block or the counter pressure surface.
  • this embodiment of the invention aligns the upper surfaces of the bolt connection, so that there is a smooth finish towards the outside.
  • the respective hook stops only serve to make assembly of the jib parts easier and are not designed and provided for power transmissions during operation of the crane; the tensile and compressive forces in the upper chord plane are still transmitted there by the normal bolt joint, but the advantages of the invention which relate to the ease of assembly are fully and reliably achieved.
  • the invention is in one Designed in such a way that, in addition to the ease of assembly, there is the additional advantage that, via the bolt joint of the upper belt level, the compressive forces in this plane are also transmitted without bolt loading - in contrast to the previously described exemplary embodiments according to FIGS. 1 to 5 - while the tensile forces are being transmitted be transferred from the hook to the assigned pin.
  • the flats 12 and the corresponding counter surfaces 13, which are primarily centering aids for the bolts in the lower flange also transmit compressive forces in this plane without bolt loading.
  • FIGS. 6 and 7 show the two ends of the two boom sections 1 and 2 to be connected before they are joined together, specifically in FIG. 6 in a side view with their respective upper chord tubes 7 and lower chord tubes 8, while the FIG. 7 shows a top view according to view A in FIG. 6.
  • the fork piece 21 is provided with a counter pressure surface 22 in its foot region.
  • the bracket piece of the upper belt level - two at each joint, ie one for each upper belt tube - is designed as a hook 23 which is open at the top; the bolt 5 receiving bore of the bracket piece is not closed on all sides, the top opening being at least as wide as the length of the diameter of the bolt 5.
  • the hook 23 is deformed into a stop pressure surface 24 which, like the counter pressure surface 22, with which it corresponds in the assembled state and with which it then lies flat, is aligned substantially vertically and is dimensionally adapted to this.
  • a reinforcement 25 extends backwards, which serves to absorb the offset moment in the hook 23.
  • the bolt joint is designed in accordance with the exemplary embodiments according to FIGS. 1 to 5, i.e. the bracket piece 4 is provided at the free end with a flattened portion 12 which also extends substantially vertically and corresponds to the counter surface 13 provided in the foot of the fork piece 3.
  • the flattened area 12 thus represents the stop pressure surface in the lower flange level, by means of which the bolt centering in the lower flange level is achieved in cooperation with the corresponding counter pressure surface 13.
  • the previously described embodiment according to the invention is designed as a four-section connection, which leads to the fact that the bolts 5 can be kept smaller in diameter than in a two-section connection, because instead of the two interfaces of the bolts that were previously subject to shear 5 there are now four, so that ultimately the entire connection can be made significantly smaller.
  • the design of the fork and bracket pieces is as in the previously described embodiment, so that reference can be made to them and the corresponding parts are provided with the same reference numerals.
  • the hook 23 Due to the four-edgedness, of course, the hook 23 is double-formed for the upper belt level in the bracket piece, as can be seen in particular from FIG. 9. In the assembled state, these double hooks 23 then engage in the correspondingly double-shaped recesses of the associated fork piece 21 with the bolts 5 reaching behind.
  • the counter pressure surfaces 22 and 13 and the stop pressure surfaces 24 and 12 are correspondingly doubled.
  • Fig. 10 the two boom sections 1 and 2 are shown in an intermediate position during the assembly process, details of the inventive design of the bolt joint with hook stop are shown enlarged in two versions in the lower part.
  • the assembly takes place as follows:
  • the cantilever parts to be joined are aligned perpendicular to the plane of the drawing by means of the bolt connections on the upper flange via the fork and bracket piece, but hooked in the drawing plane with their longitudinal axes at an angle to one another such that the hook-shaped bracket pieces 23 engage under the respectively assigned bolts 5, as is the case in detail X clearly emerges.
  • the hooks 23 are designed in such a way that problem-free hooking of the boom part 2 is ensured, the stop pressure surfaces 24 and the counter pressure surfaces 22 having enough play in this assembly situation for the subsequent alignment movement up to the aligned position of the boom parts or shots according to FIG. 11.
  • the stop pressure surfaces 24 of the upper belt level also fit snugly against the counterpressure surfaces 22 corresponding to them, so that, in addition to fixing the position, they are also able to transmit the compressive forces occurring in the upper belt plane, since this no longer possible due to the hook 23 opened laterally upwards and is therefore no longer necessary.
  • the corresponding stop pressure surfaces 12 and counter pressure surfaces 13 are also in contact with one another and are also able to transmit compressive forces after they have been fixed and fixed during assembly for correct, elongated, aligned alignment of the boom sections 1 to be connected and served 2.
  • FIG. 10 two possible variants of the formation of the counter pressure surface 22 in the upper chord-side fork piece are shown as detail X.
  • the counter pressure surface 22 is flat in the lower area and adapted to the stop pressure surface 24 in terms of its dimensions and its orientation, while in the example shown above towards the top from the central longitudinal axis of the top flange tube of the boom section 1 towards the rear away from the free end is aligned obliquely wherever against the counter-pressure surface 22 in the example shown below, away from the center of the boom above the central longitudinal axis of the upper chord tube of the boom section 1, it merges into a concave surface 27 whose curvature is adapted to the outer contour of the hook associated with it, which in the assembled state of the outer surface 27a of the hook end fits snugly.
  • This achieves an extraordinarily favorable contact situation, which ensures that the compressive forces are introduced centrally into the top chord tubes of the weft 1, since force-transmitting surfaces now abut one another both above and below the central longitudinal axis
  • the exemplary embodiments according to FIGS. 6 to 10 have the particular advantage that the bolts 5 are generally relieved in that on the one hand the hooks on the upper belt side with their stop pressure surfaces 24 in cooperation with the counter pressure surfaces 22 and on the other hand the contact surfaces 12 and 13 transmit forces in the contact state, so that the bolt is relieved in these operating states.
  • the stop pressure surfaces and counter pressure surfaces have an additional securing effect both in the upper chord and in the lower chord plane and in particular relieve the bolts gently in the event of pressure forces being introduced, which are then transmitted by them.
  • the different pairs of stops can be attached or combined in accordance with the modified form and number, depending on the particular requirements.
  • the lower flange level in the case of basically hook-shaped bolt connections in the upper flange level.
  • the lower chord level can be two be designed sleek with correspondingly larger bolts 5, but a four-bolt bolt connection according to FIG. 12b, for example, allows the diameter of the bolts 5 to be reduced.
  • Flange connection are provided, namely that the shots 1 and 2 to be connected are provided at their mutually facing ends with corresponding flanges 28 which are to be connected by means of screws 29.
  • the flanges 28 then serve as stops with their free contact surfaces facing each other, and, with a corresponding design, can also perform assembly management and fixing tasks similar to the fork and bracket pieces designed according to the invention, while they then operate both compressive and tensile forces are able to transmit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
EP89250106A 1988-12-19 1989-12-04 Connexion à plusieurs broches Expired - Lifetime EP0376417B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3842726A DE3842726C3 (de) 1988-12-19 1988-12-19 Mehrschnittige Bolzenverbindung
DE3842726 1988-12-19

Publications (2)

Publication Number Publication Date
EP0376417A1 true EP0376417A1 (fr) 1990-07-04
EP0376417B1 EP0376417B1 (fr) 1994-03-02

Family

ID=6369539

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89250106A Expired - Lifetime EP0376417B1 (fr) 1988-12-19 1989-12-04 Connexion à plusieurs broches

Country Status (5)

Country Link
US (1) US5082128A (fr)
EP (1) EP0376417B1 (fr)
JP (1) JP2660240B2 (fr)
DE (2) DE3842726C3 (fr)
RU (1) RU1801180C (fr)

Cited By (10)

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Publication number Priority date Publication date Assignee Title
EP0533323A1 (fr) * 1991-07-25 1993-03-24 The Manitowoc Company, Inc. Dispositif de connection rapide pour éléments de flèche de grues et analogues
US6213318B1 (en) 1999-03-01 2001-04-10 Manitowoc Crane Group, Inc. Rotatable connection system for crane boom sections
EP1468955A1 (fr) * 2003-04-17 2004-10-20 Potain Dispositif d'assemblage démontable des éléments de flèche d'une grue à tour
EP1935833A1 (fr) * 2006-12-20 2008-06-25 Liebherr-Werk Ehingen GmbH Elément de grille pour une grande grue mobile et son procédé de montage
WO2013086878A1 (fr) * 2011-12-12 2013-06-20 中联重科股份有限公司 Structure à joint en about pour bras de poinçon, et bras de poinçon et grue à bras de poinçon en étant munie
EP2746214A1 (fr) * 2012-12-20 2014-06-25 Manitowoc Crane Companies, LLC Système de connecteur de colonne
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
US9121425B2 (en) 2007-11-29 2015-09-01 Manitowoc Crane Companies, Llc Connection system for crane components
US9187296B2 (en) 2007-11-29 2015-11-17 Manitowoc Crane Companies, Llc Connection system for crane column segments
EP3730448A1 (fr) * 2019-04-24 2020-10-28 Tadano Demag GmbH Grue mobile pourvue de mât extensible

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DE9013209U1 (de) * 1990-09-18 1990-12-20 Liebherr-Werk Ehingen Gmbh, 7930 Ehingen Bolzenverbindung, vorzugsweise für Auslegerzwischenstücke für Kräne
CA2108958C (fr) * 1993-01-08 1996-12-03 David J. Pech Raccord de segments d'anneau
DE4402005A1 (de) * 1994-01-18 1995-07-20 Mannesmann Ag Ein- oder mehrschnittige Bolzenverbindung für Kran-Auslegerteile
DE19544076C1 (de) * 1995-11-25 1997-04-30 Expo Mart Inc Bausatz zur Herstellung von Tragwerken aus Tragstangen und Verbindungselementen
CA2198953C (fr) * 1996-03-04 2000-10-10 Michael J. Wanek Piece de liaison desaxee de fleche relevable
US6131750A (en) * 1997-05-28 2000-10-17 Link-Belt Construction Equipment Co Connection system for boom extension
DE29807347U1 (de) 1998-04-24 1998-07-30 Tyroller Hydraulik Herzberg GmbH, 04916 Herzberg Anordnung zur Befestigung von Zusatzgeräten, insbesondere von Ladekränen an kleineren Lastkraftfahrzeugen
DE102005006456A1 (de) 2005-02-12 2006-08-24 Gottwald Port Technology Gmbh Kranausleger in Gitterbauweise
US7850016B2 (en) * 2005-03-23 2010-12-14 James Trisler Apparatus for storing lengths of pipe
DE202005008602U1 (de) * 2005-06-02 2006-10-19 Liebherr-Werk Biberach Gmbh Ausleger
DE202008016876U1 (de) * 2008-12-19 2010-09-23 Liebherr-Werk Ehingen Gmbh Drehverbindung
ES2374015B1 (es) * 2009-02-05 2012-10-30 Linden Comansa, S.L. Grúa torre sin cúspide.
DE102009022262A1 (de) * 2009-05-22 2010-11-25 Terex Demag Gmbh Winkelverstellung eines Auslegersystems
DE202010004584U1 (de) * 2010-04-06 2011-10-05 Liebherr-Werk Ehingen Gmbh Gittermastkran und Gittermastausleger
JP2011225343A (ja) * 2010-04-21 2011-11-10 Kobe Steel Ltd ラチスブーム
US8739988B2 (en) * 2010-09-20 2014-06-03 Manitowoc Crane Companies, Llc Pinned connection system for crane column segments
USD670474S1 (en) * 2011-06-14 2012-11-06 Eepos Gmbh Guide rail for mobile crane
CN102500939B (zh) * 2011-11-03 2014-10-15 常州海杰冶金机械制造有限公司 塔式起重机平衡臂的装配方法
CN102627229B (zh) * 2012-04-11 2015-03-11 中联重科股份有限公司 销轴连接结构及其安装和拆卸方法、塔式起重机
CN103303819A (zh) * 2013-07-01 2013-09-18 张家港市天运建筑机械有限公司 塔机臂架下弦
CN104512820A (zh) * 2014-12-19 2015-04-15 徐州建机工程机械有限公司 一种平头塔机起重臂连接的新型结构
DE102017000525B4 (de) * 2016-02-10 2024-02-29 Liebherr-Werk Ehingen Gmbh Gitterstückelement und Gitterstück für Kranausleger
CA2972085C (fr) * 2017-06-28 2018-05-08 John Rene Spronken Dispositif de soulevement ou support d'une charge, et elements et connecteurs destines audit dispositif
RU174726U1 (ru) * 2017-07-04 2017-10-30 Федеральное государственное бюджетное образовательное учреждение высшего образования "Брянский государственный университет имени академика И.Г. Петровского" Шарнир устройства соединения звеньев крано-манипуляторной установки
CN112520596A (zh) * 2021-01-22 2021-03-19 郑州科润机电工程有限公司 一种塔式起重机水平悬臂式起重臂的节间连接结构

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US3080068A (en) * 1960-12-15 1963-03-05 Alphie O Felkner Sectional boom for cranes
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US3250401A (en) * 1964-12-17 1966-05-10 Bucyrus Erie Co Self-erecting tower crane with bayonet joints between sections
US3323660A (en) * 1965-09-21 1967-06-06 Northwest Engineering Corp Lattice boom construction
FR1547958A (fr) * 1966-12-19 1968-11-29 Grue mobile
US3511388A (en) * 1967-09-18 1970-05-12 Manitowoc Co Pin connection for elongate load supporting boom structure
US4496262A (en) * 1982-06-01 1985-01-29 Sangster George G Linking means
DE3706301C1 (en) * 1987-02-24 1987-10-15 Mannesmann Ag Connecting sections of a lattice pole in the jib system of a movable crane

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0720961A3 (fr) * 1991-07-25 1996-07-31 Manitowoc Co
EP1016617A1 (fr) * 1991-07-25 2000-07-05 Manitowoc Crane Group, Inc. Dispositif de connexion rapide pour éléments de flèches de grues et analogues
EP0533323A1 (fr) * 1991-07-25 1993-03-24 The Manitowoc Company, Inc. Dispositif de connection rapide pour éléments de flèche de grues et analogues
US6213318B1 (en) 1999-03-01 2001-04-10 Manitowoc Crane Group, Inc. Rotatable connection system for crane boom sections
EP1044922A3 (fr) * 1999-03-01 2003-05-14 Manitowoc Crane Companies, Inc. Système de connection rotatif pour sections de flèche d'une grue
RU2336220C2 (ru) * 2003-04-17 2008-10-20 Манитовок Кран Груп Франс Монтажное устройство для разъемного соединения элементов стрелы башенного крана
EP1468955A1 (fr) * 2003-04-17 2004-10-20 Potain Dispositif d'assemblage démontable des éléments de flèche d'une grue à tour
FR2853891A1 (fr) * 2003-04-17 2004-10-22 Potain Sa Dispositif d'assemblage demontable des elements de fleche d'une grue a tour
US7156245B2 (en) 2003-04-17 2007-01-02 Potain Device for demountable assembly of the jib elements of a tower crane
EP1935833A1 (fr) * 2006-12-20 2008-06-25 Liebherr-Werk Ehingen GmbH Elément de grille pour une grande grue mobile et son procédé de montage
US7703615B2 (en) 2006-12-20 2010-04-27 Liebherr-Werk Ehingen Gmbh Lattice piece for a large mobile crane and method of erecting the same
US9121425B2 (en) 2007-11-29 2015-09-01 Manitowoc Crane Companies, Llc Connection system for crane components
US9187296B2 (en) 2007-11-29 2015-11-17 Manitowoc Crane Companies, Llc Connection system for crane column segments
WO2013086878A1 (fr) * 2011-12-12 2013-06-20 中联重科股份有限公司 Structure à joint en about pour bras de poinçon, et bras de poinçon et grue à bras de poinçon en étant munie
EP2746214A1 (fr) * 2012-12-20 2014-06-25 Manitowoc Crane Companies, LLC Système de connecteur de colonne
US9051159B2 (en) 2012-12-20 2015-06-09 Manitowoc Crane Companies, Llc Column connector system
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
EP3730448A1 (fr) * 2019-04-24 2020-10-28 Tadano Demag GmbH Grue mobile pourvue de mât extensible

Also Published As

Publication number Publication date
DE3842726A1 (de) 1990-06-21
DE58907106D1 (de) 1994-04-07
RU1801180C (ru) 1993-03-07
JP2660240B2 (ja) 1997-10-08
EP0376417B1 (fr) 1994-03-02
DE3842726C2 (de) 1995-05-18
DE3842726C3 (de) 2001-01-18
JPH02225294A (ja) 1990-09-07
US5082128A (en) 1992-01-21

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