FR2541983A1 - Transportable folding rotary tower crane - Google Patents

Transportable folding rotary tower crane Download PDF

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Publication number
FR2541983A1
FR2541983A1 FR8402731A FR8402731A FR2541983A1 FR 2541983 A1 FR2541983 A1 FR 2541983A1 FR 8402731 A FR8402731 A FR 8402731A FR 8402731 A FR8402731 A FR 8402731A FR 2541983 A1 FR2541983 A1 FR 2541983A1
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FR
France
Prior art keywords
jib
counterweight
counter
crane
tower
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
FR8402731A
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French (fr)
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FR2541983B1 (en
Inventor
Gunter Lehner
Frank Burgdorf
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.)
PEKAZETT BAUMASCH
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PEKAZETT BAUMASCH
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Application filed by PEKAZETT BAUMASCH filed Critical PEKAZETT BAUMASCH
Publication of FR2541983A1 publication Critical patent/FR2541983A1/en
Application granted granted Critical
Publication of FR2541983B1 publication Critical patent/FR2541983B1/en
Expired 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
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • 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

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

Abstract

The crane, which has a two section telescopic mast (1,2) has a jib (3) and counter jib (4) with a cast iron balance weight (6) mounted on it. The two jibs are connected by hinges to the upper section (2) of the mast so that they can be swung from a horizontal position projecting outwards in opposite directions to a folded vertical position for transport. The outer ends are connected to tensioning cables passing over an extension (5) on the upper section, and the jibs can be lowered without auxiliary equipment by releasing the cables. Projecting from the bottom section (1) of the mast is a support (7) for the balance weight, which can be moved along the counter jib, using a guiding track incorporated in the counter jib. This enables the balance weight to be supported at a suitable position when folded, so that it can safely travel by road.

Description

Grue pivotante a tour, à flèche et contre-flèche
La présente invention est relative à une grue pivotante a tour, comportant une flèche et une contre-flèche portant un contrepoids, qui peut etre montée et démontée sans l'intervention de moyens auxiliaires extérieurs et peut, dans sa position de transport, dans laquelle elle est démontée etre déplacée sur route au complet, avec toutes ses parties essentielles, la tour étant télescopique.Swivel tower, jib and counter-jib crane
The present invention relates to a rotary tower crane, comprising a jib and a counter-jib carrying a counterweight, which can be assembled and disassembled without the intervention of external auxiliary means and can, in its transport position, in which it is dismantled be moved on the road complete, with all its essential parts, the tower being telescopic.

Dans les grues à tour traditionnelles,ie contrepoids, constitue par des plaques de bâton, est mis en place pendent le montage, à l'extrémité de la contre-flèche, de préférence au moyen d'une grue auxiliaire -Ces contrepoids doivent etre transportés, montés et démontés a part, ce qui complique le montage de la grue et le rend plus onereux
Dans le cas des grues à montage rapide que l'on utilisait jusqu'à pressent on avait l'habitude, pour le transport sur route de chantier à chantier, de replier la grue sans démonter l'une quelconque de ses parties essentielles, le montage et le démontage de la grue pouvant alors s'effectuer sans l'intervention de moyens auxiliaires extérieurs.In the traditional tower cranes, ie counterweight, constituted by stick plates, is put in place during the assembly, at the end of the counter-jib, preferably by means of an auxiliary crane - These counterweights must be transported , assembled and disassembled apart, which complicates the assembly of the crane and makes it more expensive
In the case of quick-erecting cranes that were used until the present day, for the transport on the road from site to site, we used to fold the crane without dismantling any of its essential parts, the assembly and the disassembly of the crane can then be carried out without the intervention of external auxiliary means.

Cependant, si l'on essaie de replier de cette manière connue, pour le transport sur route, une grue comportant une contre-flèche et un contrepoids attaché à l'extrémité de cette contre-flèche on constate que le contrepoids se place dans une position défavorable, de sorte que la charge du véhicule est mal répartie. Par contre, si le contrepoids est placé sur le véhicule dans une position favorable pour le transport sur route, sa position sera défavorable pour le fonctionnement de la grue C'est essentiellement pour cette raison que. le contrepoids doit être enlevô,pour le transport sur route. However, if one tries to fold in this known manner, for road transport, a crane comprising a counter-jib and a counterweight attached to the end of this counter-jib, it can be seen that the counterweight is placed in a position unfavorable, so that the vehicle load is unevenly distributed. On the other hand, if the counterweight is placed on the vehicle in a favorable position for road transport, its position will be unfavorable for the operation of the crane. It is essentially for this reason that. the counterweight must be removed for road transport.

Le but de l'invention est donc de permettre la rôalisation d'une grue à tour du type précité dans laquelle le contrepoids monté sur la contre-flèche se place toujours, que ce soit pour le fonctionnement de la grue ou pour son transport sur route, de telle manière que son centre de gra- vité soit dans la position la plus favorable, cette position étant prise automatiquement lors du montage et du démontage
Ce but est atteint, suivant l'invention, d fait que le contrepoids monté sur la contre-flèche est fixé solidement sur elle, mais de manière à pouvoir se déplacer, et que le fût extérieur de la tour porte une console sur laquelle, lors de la rentrée du fût intérieur, le contrepoids prend appui de telle façon que son centre de gravite soit dans la position la plus favorable pour le transport sur route
L'invention résout le problème des centres de gravite différents par un dôplacement du contrepoids pendant le montage ou le dônontage. Ce déplacement du contrepoids lors de la sortie ou de la rentrée des éléments télescopique3 de la tour s'effectue automatiquesent sans autre intervention.The object of the invention is therefore to allow the positioning of a tower crane of the aforementioned type in which the counterweight mounted on the counter-jib is always placed, whether for the operation of the crane or for its transport on the road. , so that its center of gravity is in the most favorable position, this position being taken automatically during assembly and disassembly
This object is achieved, according to the invention, d that the counterweight mounted on the counter-jib is fixed securely on it, but so as to be able to move, and that the outside shaft of the tower carries a console on which, during from the re-entry of the internal barrel, the counterweight is supported so that its center of gravity is in the most favorable position for road transport
The invention solves the problem of different centers of gravity by displacing the counterweight during assembly or disassembly. This displacement of the counterweight when the telescopic elements 3 of the tower exit or re-enter is effected automatically without any other intervention.

Comme le déplacement du contrepoids s'effectue alors que la contre-flèche ast suspendue verticalement depuis le haut de la tour, le dispositif de maintien peut être de construction simple car il ne doit absorber que des efforts de guidage et non pas des efforts de frottement.As the movement of the counterweight takes place while the counter-jib is suspended vertically from the top of the tower, the holding device can be of simple construction since it must only absorb guide forces and not friction forces .

L'invention est décrite ci-après d'une manière plus détaillée au moyen d'un exemple de réalisation, en se référant au dessin dans lequel
La figure i représente une grue dont la flèche et la contre-flèche sont dans leur position de travail.The invention is described below in more detail by means of an exemplary embodiment, with reference to the drawing in which
Figure i shows a crane whose jib and counter-jib are in their working position.

La figure 2 représente la grue partiellement démontée au début de la rentrée des pièces télescopiques de la tour. Figure 2 shows the crane partially dismantled at the start of the retraction of the telescopic parts of the tower.

La figure 3 représente la grue dont toutes les pièces télescopiques sont rentrées
La figure 1 représente une grue en position de tra- vail. La tour télescopique comporte un fût extérieur (1) et un fût intérieur (2), Pour plus de clarté 5 les cables assurant les mouvements télescopiques de la tour, le levage et l'abaissement des charges, de même que le montage et le démontage de la grue ne sont pas représentés a A l'extrôiuite' supérieure du fût intérieur (2), la flèche (3) et la contreflèche (4) sont maintenues dans leur position de travail. Figure 3 shows the crane with all the telescopic parts retracted
Figure 1 shows a crane in the working position. The telescopic tower has an exterior shaft (1) and an interior shaft (2). For greater clarity, 5 the cables ensuring the telescopic movements of the tower, lifting and lowering of loads, as well as mounting and dismounting. of the crane are not shown at the upper end of the inner shaft (2), the boom (3) and the jib (4) are kept in their working position.

par des câbles de tension (8) qui sont guidés sur un appuitendeur (5). Pour le montage et le démontage de la grue, la flèche (3) et la contre-flèche (4) peuvent pivoter autour d'axes horizontaux. L'extrémité de la contre-flèche (4) porte un contrepoids (6) qui y est fixé. Du côté de la conteflèche (4), le fût extérieur (1) porte une console (7) ou un dispositif analogue.by tension cables (8) which are guided on a support (5). For mounting and dismounting the crane, the boom (3) and the counter-jib (4) can pivot around horizontal axes. The end of the counter-jib (4) carries a counterweight (6) which is fixed to it. On the side of the counter-arrow (4), the outer barrel (1) carries a console (7) or a similar device.

Pour le démontage de la tour, que la figure 1 représente dans sa position de travail, la flèche (3) et la contre-flèche (4) sont rabattues vers le bas, au moyen d'un appareil de montage non représente, jusqu'à ce qu'elles pendent, parallèlement à la tour (1,2). Le contrepoids (6) pend à 19extrémité de la contre-flèche (4). C'est la situation représentée par la figure 2. L'appui-tendeur -(5) peut évidemment être rabattu, lui aussi, d'une manière connue, pour le transport sur route. For dismantling the tower, which FIG. 1 represents in its working position, the arrow (3) and the counter-arrow (4) are folded down, by means of a mounting device not shown, until that they hang parallel to the tower (1,2). The counterweight (6) hangs at the end of the counter-jib (4). This is the situation shown in Figure 2. The tensioner support - (5) can obviously be folded down, too, in a known manner, for road transport.

Lorsque le fût intérieur (2) rentre ensuite dans le fût extérieur (i), le contrepoids (6) prend appui, à partir d'une certaine hauteur, sur la console (7). Lorsque le fût intérieur continue à rentrer, la contre-flèche (4) continue également à descendre, mais le'contrepoids (6) reste dans sa position, détermine à l'avance,yqui est choisie de telle manière qu'après le repliement de la grue complètement démontée le centre de gravité du contrepoids se trouve dans une position favorable par rapport au véhicule de transport sur route (non représenté). When the inner barrel (2) then enters the outer barrel (i), the counterweight (6) bears, from a certain height, on the console (7). When the internal barrel continues to enter, the counter-jib (4) also continues to descend, but the counterweight (6) remains in its position, determines in advance, yqui is chosen so that after the folding of with the crane completely dismantled, the center of gravity of the counterweight is in a favorable position with respect to the road transport vehicle (not shown).

Comme le contrepoids (6) s'appuie de tout son poids sur la console (7), le dispositif de maintien situé entre le contrepoids (6) et la contre-flèche (4) ne doit absorber, pendant le déplacement, pratiquement aucun effort de guidage et absolument aucun effort de frottement. Il peut donc être constitué par une simple glissière de guidage. As the counterweight (6) rests with its full weight on the console (7), the holding device located between the counterweight (6) and the counter-jib (4) must absorb virtually no force during movement. guide and absolutely no friction effort. It can therefore be constituted by a simple guide slide.

La figure 3 représente la grue quand les pièces télescopiques de la tour sont complètement rentrées Pour le transport sur route, la grue est rabattue, suivant un pro- cédé connu applique pour les grues à montage rapide à flèche à chariot ou à flèche articulée, le contrepoids (6) restant à sa place sur la tour. FIG. 3 shows the crane when the telescopic parts of the tower are fully retracted. For road transport, the crane is folded down, according to a known method applied for quick-erecting cranes with jib boom or articulated jib, the counterweight (6) remaining in its place on the tower.

Pour le montage de la grue, les opérations s'effectuent en sens inverse. Dans ce cas également, le contrepoids, qui reste à sa place sur la grue pendant le trajet sur route, se place automatiquement dans sa position optimale à l'extrémité libre de la contre-flèche.  For mounting the crane, the operations are carried out in reverse. In this case also, the counterweight, which remains in its place on the crane during the road journey, is automatically placed in its optimal position at the free end of the counter-jib.

Comme, pour le transport sur route, il faut non seulement que les poids, mais également les dimensions ne dépassent pas des valeurs maximales déterminées, le contrepoids est constitue par un moulage d'acier ou par des plaques d'acier soudé et non pas, comme d'habitude, par du béton. Le poids spécifique de l'acier étant nettement spe'rieur, les dimensions du contrepoids peuvent être réduites comme l'exige le trans- port sur route.  As, for road transport, not only the weights but also the dimensions must not exceed determined maximum values, the counterweight is constituted by a steel casting or by welded steel plates and not, as usual, by concrete. As the specific weight of the steel is clearly higher, the dimensions of the counterweight can be reduced as required for road transport.

Claims (3)

REVENDICATIONS 1. Grue à tour pivotante, comportant une flèche et une contre-flèche portant un contrepoids, qui peut etre montée et démontée sans l'intervention de moyens auxiliaires extérieurs et peut, dans sa position de transport9 dans laquelle elle est démontée, entre déplacée sur route au complet, avec toutes ses parties essentielles, la tour étant télesco- pique, caractérisée en ce que le contrepoids (6) monté sur la contre-flèche (4) est fixe sur elle solidement, mais de manière à pouvoir se déplacer le long de celle ci et que le fût extérieur (1) de la tour porte une console fixe (7) sur -laquelle, lors de la rentrée du fût intôrieur (2), le contre- poids (6) prend appui de telle manière que son centre de gravité ssit dans la position la plus favorable pour le transport sur route. 1. Swivel tower crane, comprising a jib and a counter-jib carrying a counterweight, which can be assembled and disassembled without the intervention of external auxiliary means and can, in its transport position9 in which it is disassembled, moved between complete road, with all its essential parts, the tower being telescopic, characterized in that the counterweight (6) mounted on the counter-jib (4) is fixed on it securely, but so as to be able to move along of the latter and that the exterior shaft (1) of the tower carries a fixed console (7) on which, when the interior shaft (2) is retracted, the counterweight (6) is supported so that its center of gravity is in the most favorable position for road transport. 2.- Grue a tour pivotante selon la revendication 1, caraotérisée en ce que, dans la zone de déplacement du contrepoids (6), elle comporte, entre la contre-flèche (4) et le contrepoids (6), un dispositif de guidage a coulisse. 2. A swivel tower crane according to claim 1, characterized in that, in the displacement zone of the counterweight (6), it comprises, between the counter-jib (4) and the counterweight (6), a guide device backstage. 3.- Grue àtour pivotante selon l'une des revendications 1 ou 2, caractérisée en ce que le contrepoids (6) est en acier moulé.  3.- Swivel tower crane according to one of claims 1 or 2, characterized in that the counterweight (6) is made of cast steel.
FR8402731A 1983-03-05 1984-02-23 SWIVELING CRANE WITH LATHE, BOOM AND COUNTER-BOOM Expired FR2541983B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833307893 DE3307893C2 (en) 1983-03-05 1983-03-05 Tower crane with jib and counter jib

Publications (2)

Publication Number Publication Date
FR2541983A1 true FR2541983A1 (en) 1984-09-07
FR2541983B1 FR2541983B1 (en) 1988-07-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR8402731A Expired FR2541983B1 (en) 1983-03-05 1984-02-23 SWIVELING CRANE WITH LATHE, BOOM AND COUNTER-BOOM

Country Status (3)

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CH (1) CH662333A5 (en)
DE (1) DE3307893C2 (en)
FR (1) FR2541983B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2816303A1 (en) * 2000-11-07 2002-05-10 Jean Bard Tower crane has base with tower and assembly with boom and stowable counter-boom

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105293302B (en) * 2015-11-25 2017-08-18 镇海建设集团有限公司 Tower crane with wind-shielding function
CN105293301B (en) * 2015-11-25 2017-08-08 镇海建设集团有限公司 Windproof tower crane
CN105293310B (en) * 2015-11-25 2017-09-15 镇海建设集团有限公司 A kind of tower crane with windproof structure
CN105271024B (en) * 2015-11-25 2017-09-05 镇海建设集团有限公司 Tower crane with windproof structure
CN105293299B (en) * 2015-11-25 2017-08-18 镇海建设集团有限公司 Windproof derrick crane for building
CN105293316B (en) * 2015-11-25 2017-08-25 镇海建设集团有限公司 A kind of windproof tower crane
CN105293303B (en) * 2015-11-25 2017-07-28 镇海建设集团有限公司 A kind of windproof derrick crane for building
CN105293311B (en) * 2015-11-25 2017-07-28 镇海建设集团有限公司 A kind of tower crane with wind-shielding function
CN105293300B (en) * 2015-11-25 2018-02-09 镇海建设集团有限公司 Can be with the tower crane of fast assembling-disassembling balancing weight
CN107381370A (en) * 2017-09-19 2017-11-24 安徽骏达起重机械有限公司 Multiple scalable boom cranes
CN109335977A (en) * 2018-12-10 2019-02-15 佛山科学技术学院 The wind-proof device of building crane
CN113526366B (en) * 2021-06-11 2023-10-03 浙江省建设工程机械集团有限公司 Multifunctional flat arm tower crane for fire fighting

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1310001A (en) * 1963-03-04
DE1205674B (en) * 1962-04-25 1965-11-25 Richier Sa Tower crane
FR2041657A5 (en) * 1969-05-29 1971-01-29 Richier Sa
DE8135286U1 (en) * 1981-12-03 1982-12-02 Liebherr-Werk Biberach Gmbh, 7950 Biberach TURNING CRANE TOP

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT713343A (en) * 1961-06-01

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1310001A (en) * 1963-03-04
DE1205674B (en) * 1962-04-25 1965-11-25 Richier Sa Tower crane
FR2041657A5 (en) * 1969-05-29 1971-01-29 Richier Sa
DE8135286U1 (en) * 1981-12-03 1982-12-02 Liebherr-Werk Biberach Gmbh, 7950 Biberach TURNING CRANE TOP

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2816303A1 (en) * 2000-11-07 2002-05-10 Jean Bard Tower crane has base with tower and assembly with boom and stowable counter-boom

Also Published As

Publication number Publication date
FR2541983B1 (en) 1988-07-22
DE3307893A1 (en) 1984-09-06
DE3307893C2 (en) 1985-01-24
CH662333A5 (en) 1987-09-30

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