EP1031530B1 - Dispositif de dépliage ou repliage simultané d'éléments de pointe d'une flèche de grue - Google Patents

Dispositif de dépliage ou repliage simultané d'éléments de pointe d'une flèche de grue Download PDF

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Publication number
EP1031530B1
EP1031530B1 EP00420021A EP00420021A EP1031530B1 EP 1031530 B1 EP1031530 B1 EP 1031530B1 EP 00420021 A EP00420021 A EP 00420021A EP 00420021 A EP00420021 A EP 00420021A EP 1031530 B1 EP1031530 B1 EP 1031530B1
Authority
EP
European Patent Office
Prior art keywords
jib
crane
tip
elements
unfolding
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
EP00420021A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1031530A1 (fr
Inventor
Olivier Gevaudant
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 EP1031530A1 publication Critical patent/EP1031530A1/fr
Application granted granted Critical
Publication of EP1031530B1 publication Critical patent/EP1031530B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B66C23/34—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
    • 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

Definitions

  • the present invention relates to tower cranes whose boom, made in several successive elements articulated between them, is collapsible for the transport of the crane, especially on the road. More particularly, the invention is concerned with crane arrows which have, towards their point, two elements of relatively short length, and it relates, still more specifically, to a device for unfolding or folding simultaneously such crane boom tip elements.
  • This known system makes it possible to fold only one element of arrowhead, of a length not exceeding 2 meters. Moreover, he requires a specific motorization.
  • a tower crane is also known for example EP-A-0733584.
  • the invention relates to a tower crane having an unfolding device or Folding crane spike tip elements to the tower, the arrow comprising a succession of elements articulated between them two by two around horizontal axes, these elements comprising at least two main elements of relatively large length, and at least two elements of relatively small length, the device comprising liaison bodies connecting the front part of the last main arrow element, the element arrowhead intermediate and arrowhead extreme element, in order to perform the simultaneous unfolding or folding, in a plane vertically, of the two peak elements in relation to the remaining part of the arrow, at least one tip member being collapsible in one direction substantially perpendicular to the main elements, this device being motorized by the lifting cable of the crane, and comprising, for this purpose, a unfolding arm carried by the front part of the last main element of the boom and equipped with a pulley for the passage of the hoisting rope at during operations of unfolding or folding the elements of the arrow, the lifting cable being then attached to one of the said elements peak.
  • the hoisting rope is, for example, tied on a swivel at the front end of the extreme element of the Arrowhead.
  • the aforementioned connecting members comprise at least one crankshaft system, located in a vertical and bound plane, by joints around horizontal axes, respectively to the two tip elements and at the front part of the last main element of the arrow.
  • the device may comprise two crankshaft systems symmetrical, arranged on each side of the arrow in vertical planes parallel.
  • the or each crank system allowing the unfolding or simultaneous folding of the two tip elements of the arrow, includes in one embodiment a three-point lever hinged by its point intermediate on a vertex of the intermediate point of arrowhead, a front link articulated at one end to the front point of the lever and, for its other end, with the extreme tip-arrow element, and a rear linkage articulated at one end to the rearward point of the lever and, by its other end, with the front part of the last main element of the arrow.
  • the lever and one of the rods of the or each crankshaft system have respective holes coming into correspondence in the unfolded position of the arrowhead, and provided for a pin lock which immobilizes the lever with respect to this rod, and which therefore immobilizes the whole system of linkage, in aligned position.
  • the linkage serves as a pull in the working position of the crane, vis-à-vis the two leading elements of the arrow.
  • This linkage can also serve as a triangulation for the boom unfolded on the ground, which is also a possible transport position on construction site.
  • the unfolding arm is articulated about an axis horizontally on the front part of the last main element of the arrow, and has abutment and / or locking means for stopping it in deployed position of use and in folded position against this element arrowhead.
  • the device that is the subject of the invention still includes a sling attached to the front of the element extreme of the arrowhead, and intended to be hung on the rear end of the first main element of the arrow, when this last is fully folded.
  • a sling attached to the front of the element extreme of the arrowhead, and intended to be hung on the rear end of the first main element of the arrow, when this last is fully folded.
  • the device is motorized, in in addition, by a cylinder for general unfolding-folding of the boom, in particular a cylinder associated with an intermediate element of folding, inserted between two main elements of the arrow; thanks to this cylinder, the last main element of the boom may be slightly inclined and raised, for clear the tip elements of the boom from the rear end of the foot of the boom, this allowing the stall of the sling and unfolding advanced elements without them encountering an obstacle.
  • the tower crane shown in FIG. 1, comprises a chassis base 1 which supports, via an orientation mechanism, a rotating frame 2 on which is articulated around a horizontal axis 3, a foldable mast 4 composed of a lower mast element 5 and an element of the upper mast 6.
  • the upper mast element 6 carries, at its summit, a crane boom 7 distributing, articulated around a horizontal axis 8 to top of the upper mast element 6.
  • Arrow 7, constituting in the state aligned with the tread of a carriage 9, consists of itself, back to front: of a first main element of arrow 10, of relatively large length; of an intermediate element 11 of folding of arrow, of relatively short length; a second main element of arrow 12, of relatively great length; of a first element of arrowhead 13, of relatively short length; and a second arrowhead element 14, of relatively short length, which is the extreme element of the arrow 7. All these arrow elements 10 to 14 are articulated between them two by two, around horizontal axes, and aligned in the working position of the crane ( Figure 1), to form the tread of the trolley 9.
  • a rigid boom punch 15 At the base of the first main arrow element 10, also called boom foot, is articulated a rigid boom punch 15, inclined towards the rear of the crane in working position.
  • An arrow pulling 16 connects the top 17 of the arrow mark 15 at a point 18 of the frame arrow foot 10.
  • An arrow retainer 19 connects the top 17 of the arrow mark 15 to the rotating frame 2, which door another ballast 20.
  • Motorized means 21 of the jack type are associated with the intermediate element 11 of arrow folding, to allow to fold down the second main element of arrow 12 on the first main element of arrow 10.
  • tip region of the arrow 7 which comprises the two arrow elements 13 and 14 of relatively small length, well visible on the enlarged detail of Figure 1 as in Figures 3 and following.
  • Arrowhead element 13 which is an element intermediate, is articulated at the front end of the second main element 12 along a horizontal axis 22. This joint is achievable, on each side of the boom 7, by a clevis-tenon system, the clevis being located for example on the intermediate element 13, while the tenon belongs to the main element of arrow 12.
  • the intermediate element 13 has, seen from the side, a triangular shape defining a top 23.
  • the second arrowhead element 14 which is the element extreme, is articulated itself at the front end of the element intermediate 13, along another horizontal axis 24.
  • This articulation is, it too, realizable on each side of the arrow 7 by a clevis-tenon system, the clevis being located for example on the extreme element 14, while that the tenon is located on the intermediate element 13.
  • the extreme element 14 is essentially rectilinear, but it also includes structures lateral 25 defining a horizontal axis of articulation 26.
  • the unfolding-folding device intended for the two elements of boom tip 13 and 14, comprises two crankshaft systems 27, arranged symmetrically on each side of the arrow 7, in planes vertical parallel.
  • Each linkage system 27 consists of a lever 28, a front connecting rod 29 and a rear connecting rod 30.
  • the lever 28 which is a three-point lever, is articulated by its intermediate point on the top 23 of the intermediate element 13 of the arrowhead, about a horizontal axis crossing 31.
  • This lever 28 has at its rear end a hole 32, intended for its locking in working position.
  • the front rod 29 is articulated, at one end, to the point front hinge 33 of the lever 28, along a horizontal axis. To his other end, the front rod 29 is articulated with the extreme element 14 of the arrowhead, along the horizontal axis 26 mentioned above.
  • the rear connecting rod 30 is articulated, at one end, to the point rear articulation 34 of the lever 28, along a horizontal axis. To his other end, the rear connecting rod 30 is articulated along a horizontal axis 35, with the front of the main boom element 12.
  • This connecting rod 30 comprises a hole 36 for locking in the working position.
  • the unfolding-folding device also comprises an arm of unfolding 37 articulated around a horizontal axis 38 on a cross member 39 (see Figure 3) secured to the front of the main element of arrow 12.
  • the unfolding arm 37 has, at its free end, a pulley 40 for at the passage of the lifting cable 41.
  • This arm 37 has a cutout form of "V" 42, allowing its support on the cross member 39 in position of use (for unfolding and folding of arrowhead elements 13 and 14).
  • the unfolding arm 37 further comprises means for locking by broaching in the transport position, in which position it is folded against the main element of arrow 12.
  • the unfolding-folding device further comprises a sling 43 (see Figure 2), fixed by loops on the front cross member 44 of the extreme element 14 of the arrowhead, and intended to hang (in folded transport position) on the rear end of the boom foot 10.
  • the motorization of the movements of the device is ensured, on the one hand, by the lifting cable 41, the end of which is fixed by a swivel at the front end of the extreme element 14 of the tip of arrow, and secondly, by the jack 21 associated with the intermediate element of folding 11 and ensuring the general unfolding-folding of the arrow 7.
  • Unlocking the unfolding arm 37 is effected by unplugging, and it is tilted manually to bring it into position raised in use, resting on the cross member 39.
  • the lifting cable 41 is then placed on the pulley 40 of the unfolding arm 37.
  • the arrow 7 is unfolded by a weak angle, for example of the order of 5 °, as suggested by the arrow F in Figure 2, to raise slightly the main element 12 and the area of the arrowhead, and allow the sling 43 to escape the rear end of the boom foot 10.
  • the lifting cable 41 is then tightened, which then pulls on the front end of the end element 14 of the arrowhead, and actuates the two crankshaft systems 27, thus causing the opening simultaneous angle between the front element 14 and the intermediate element 13 of the arrowhead, and the angle between the intermediate element 13 and the second main element 12 of the arrow.
  • the movement thus initiated is continued, until the complete alignment of elements 12, 13 and 14 of the arrow - see the intermediate positions of Figures 5 and 6, and the position final of Figure 7.
  • the arrow 7 is then folded, using the jack 21, to bring the main element 12 in its initial low position, the arrowhead now aligned with this main element 12.
EP00420021A 1999-02-26 2000-02-01 Dispositif de dépliage ou repliage simultané d'éléments de pointe d'une flèche de grue Expired - Lifetime EP1031530B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9902657A FR2790252B1 (fr) 1999-02-26 1999-02-26 Dispositif de depliage ou repliage simultane d'elements de pointe de fleche de grue
FR9902657 1999-02-26

Publications (2)

Publication Number Publication Date
EP1031530A1 EP1031530A1 (fr) 2000-08-30
EP1031530B1 true EP1031530B1 (fr) 2004-01-02

Family

ID=9542782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00420021A Expired - Lifetime EP1031530B1 (fr) 1999-02-26 2000-02-01 Dispositif de dépliage ou repliage simultané d'éléments de pointe d'une flèche de grue

Country Status (7)

Country Link
US (1) US6276541B1 (ja)
EP (1) EP1031530B1 (ja)
JP (1) JP2000255985A (ja)
DE (1) DE60007467T2 (ja)
ES (1) ES2212976T3 (ja)
FR (1) FR2790252B1 (ja)
RU (1) RU2256599C2 (ja)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20010116A1 (it) * 2001-01-23 2002-07-23 San Marco Internat S R L Gru a torre a struttura composita automontante con torre ripiegabile e sfilabile e braccio a piu' porzioni
FR2839962B1 (fr) * 2002-05-21 2004-10-29 Potain Sa Grue a tour avec contre-fleche repliable
ITMI20021957A1 (it) * 2002-09-16 2004-03-17 San Marco Internat S R L Gru a torre automontante con torre ripiegabile e sfilabile e braccio a piu' porzioni ripiegabili
US7878346B1 (en) 2008-08-25 2011-02-01 Link-Belt Construction Equipment Co., L.P., Lllp Adaptable boom extension for a mobile crane having a telescoping boom
DE102010024843B4 (de) * 2010-06-23 2012-05-31 Patrick Kramer Fahrzeug mit zumindest einem Kran
CN103508333B (zh) * 2012-06-21 2015-11-25 徐工集团工程机械股份有限公司 拉板装置及起重机
CN103626051B (zh) * 2013-09-05 2015-08-05 中联重科股份有限公司 应用于塔机的拉杆安装装置及拉杆安装方法
CN105384089A (zh) * 2015-10-30 2016-03-09 徐州建机工程机械有限公司 一种塔机起重臂拉杆结构
DE202017107301U1 (de) * 2017-09-01 2018-12-07 Liebherr-Werk Biberach Gmbh Turmdrehkran
DE102018115519B3 (de) * 2018-06-27 2019-09-12 Terex Global Gmbh Fahrzeugkran mit einem beweglichen Adapter zwischen Hauptausleger und Hauptauslegerverlängerung
CN110697436B (zh) * 2019-10-16 2020-12-01 长沙理工大学 一种水平旋转的折叠臂输送机
FR3102763B1 (fr) * 2019-10-31 2021-11-12 Manitowoc Crane Group France Grue à tour avec poinçon à pliage et dépliage automatiques
CN111787086B (zh) * 2020-06-24 2022-08-09 中国三峡建设管理有限公司 一种混凝土施工中缆机停靠装料平台桩号识别的方法
FR3123642B1 (fr) * 2021-06-07 2023-04-28 Manitowoc Crane Group France Grue à montage automatisé avec contrôle des opérations de changement de configuration
CN114737763B (zh) * 2022-03-15 2024-01-19 中联重科股份有限公司 臂架系统、控制方法及工程机械

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
US2573528A (en) * 1950-11-10 1951-10-30 Moore Corp Lee C Folding mast structure
DE3433117C2 (de) * 1984-09-08 1995-11-16 Noell Serv & Maschtechn Gmbh Turmkran mit dreiteiligem Ausleger
ATE68772T1 (de) * 1988-03-02 1991-11-15 Potain Sa Zusammenlegbarer kran mit automatischer und schneller aufrichtung.
IT1234395B (it) * 1989-06-16 1992-05-18 Ferreri Andrea Braccio di gru
FR2665429B1 (fr) * 1990-07-31 1992-10-02 Cadillon Sa Grue a montage automatise, avec fleche repliable lateralement.
FR2682097A1 (fr) * 1991-10-02 1993-04-09 Potain Sa Fleche a repliage automatise pour grue.
FR2732000B1 (fr) * 1995-03-22 1997-05-30 Potain Sa Grue a montage automatise avec fleche repliable sur elle-meme

Also Published As

Publication number Publication date
JP2000255985A (ja) 2000-09-19
DE60007467D1 (de) 2004-02-05
EP1031530A1 (fr) 2000-08-30
RU2256599C2 (ru) 2005-07-20
ES2212976T3 (es) 2004-08-16
DE60007467T2 (de) 2004-12-02
US6276541B1 (en) 2001-08-21
FR2790252A1 (fr) 2000-09-01
FR2790252B1 (fr) 2001-04-06

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