EP1873114B1 - Transportabler Turmkrahn mit einer mobilen Ballastvorrichtung - Google Patents

Transportabler Turmkrahn mit einer mobilen Ballastvorrichtung Download PDF

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Publication number
EP1873114B1
EP1873114B1 EP20070356042 EP07356042A EP1873114B1 EP 1873114 B1 EP1873114 B1 EP 1873114B1 EP 20070356042 EP20070356042 EP 20070356042 EP 07356042 A EP07356042 A EP 07356042A EP 1873114 B1 EP1873114 B1 EP 1873114B1
Authority
EP
European Patent Office
Prior art keywords
counterweight
tower crane
mast
revolving platform
articulated
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 - Fee Related
Application number
EP20070356042
Other languages
English (en)
French (fr)
Other versions
EP1873114A1 (de
Inventor
François Aquino
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
Manitowoc Crane Group France SAS
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 Manitowoc Crane Group France SAS filed Critical Manitowoc Crane Group France SAS
Publication of EP1873114A1 publication Critical patent/EP1873114A1/de
Application granted granted Critical
Publication of EP1873114B1 publication Critical patent/EP1873114B1/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B66C23/18—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
    • B66C23/348—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes the erection being operated by jacks
    • 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
    • B66C23/344—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes adapted for transport 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
    • B66C23/62—Constructional features or details
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/74—Counterweights or supports for balancing lifting couples separate from jib

Definitions

  • the present invention relates, in general, to the field of tower cranes, and more particularly that of transportable tower cranes, which are foldable for use on a construction site, and foldable for transport from a place of use to a other. Even more particularly, this invention relates to such a crane equipped with a mobile ballast device, the term "ballast" here designating a counterweight placed at the base of the crane, for its balancing and stabilization in position d 'use.
  • this tower crane comprises a rotating platform, on which is articulated the lower element of the mast, while the upper element of the mast is hinged to the top of the lower element of the mast.
  • the unfolding of the mast is controlled by an articulated assembly with stay cables and connecting rods which, in the particular case of the aforementioned document, comprises a single stay placed in a central position, that is to say located in the vertical median plane of the platform. rotating form and mast.
  • the mobile ballast as provided in this document EP 0508907 A1 , is a counterweight mounted on a frame-shaped support, which is itself hinged around a horizontal axis, at the rear of the rotating platform.
  • the front part of this support is hingedly connected, via two lateral rods, to the lower element of the mast.
  • the counterweight itself, mounted on the support, is made as a single block, with two massive side parts and with a median recessed portion.
  • the counterweight and its support are folded horizontally on the rotating platform, occupying the free space between this platform and the articulated structures of the crane. The latter then engage, in part, in the median recess of the counterweight.
  • connection made by the connecting rods between the ballast support and the lower mast element causes, simultaneously, the deployment of the mobile ballast upwards or its folding on the platform -form.
  • Such a mobile ballast device already meets the general purpose, which is to place, in the position of use, the counterweight quite far from the axis of vertical orientation of the crane, to produce a moment of high stability, while folding the ballast for the transport of the crane, in particular its transport on road.
  • the solution proposed by this document is only suitable for an embodiment with a central strut mast training. It is not directly transferable to a crane which, in a more usual way, has two side mast mast shrouds; indeed, in this case, there would be interference between the shrouds and connecting rods, during the lifting of the crane and therefore the mobile ballast.
  • the mounting of the counterweight on a support causes a complication of the structure of the mobile ballast device, without providing any particular advantage.
  • this method of mounting the counterweight does not optimize, in the lowered transport position, the situation of the mobile ballast relative to the wheels by which the crane is carried and towed on the road.
  • the present invention aims to avoid all the disadvantages previously described, and is therefore intended to improve the device considered mobile ballast for tower crane, in particular to adapt it to foldable cranes with lateral stays, while keeping a simple structure, and optimizing the raised and lowered positions of the counterweight, taking into account the environment of this counterweight.
  • the subject of the invention is a transportable tower crane with a mobile ballast device, of the kind in question here, that is to say constituted of a counterweight connected by articulation to the rear part of a platform. rotating form of the crane and also connected in an articulated manner, via at least one connecting rod, to an element of a foldable and foldable mast of the crane, so that in the unfolded position of use of the crane, the counterweight is straightened substantially vertically above the rear portion of the turntable, while in the folded transport position of the crane the counterweight is folded over the turntable,
  • the counterweight is, on the one hand, articulated to the rear part of the rotating platform by means of lateral elements extending substantially perpendicular to the longitudinal direction of said counterweight, and in that this counterweight is, on the other hand, hingedly connected, via the rod or rods, to the upper element of the foldable and collapsible mast.
  • the counterweight is articulated to the rear part of the rotating platform by means of two elongate triangular side plates, integral with this counterweight, the axis of articulation located at the tip of these plates.
  • an essential characteristic of the crane according to the present invention resides the particular mode of articulation of the counterweight on the rotating platform, which allows, in the position of use, to bring the counterweight into a position as far as possible from the axis of rotation of the crane, to produce a moment of high stability.
  • the plates by which the counterweight is articulated on the platform allow to shift back the center of gravity of the ballast, relative to their articulation, a distance equal to the sum of the half-height of the counterweight and the length of these plates.
  • the use of such plates allows a direct articulation of the counterweight on the platform, without the need for a particular support shaped frame.
  • the counterweight in the folded transport position the counterweight is brought back above the crane's running axle on the ground, which limits the load on it and allows to obtain an action of the towing shaft of the crane, exerted on the tractor truck, which is oriented towards the ground.
  • the counterweight in the folded transport position, has an inclined general orientation, rising from the rear towards the front relative to the rotating platform.
  • the counterweight in this particular folded position, can in particular be folded over a cabinet in the central part of the rotating platform, while occupying a sufficiently low height.
  • the counterweight can also, in the transport position, be folded horizontally above the rotating platform.
  • the counterweight is composed of two separate lateral blocks disposed respectively above the two longitudinal sides of the rotating platform, which allows the articulated structure of the crane to lower in the folded position, between these two blocks. .
  • the inclined transport position of the counterweight does not constitute an obstacle to the complete folding of the crane.
  • the mobile tower crane with mobile ballast device object of the present invention, overcomes all the disadvantages or shortcomings of the device known in the state of the art.
  • This tower crane comprises at its base a fixed frame 1 on which is pivotably mounted, about a vertical axis, a rotating frame or a rotating platform 2.
  • the crane comprises a folding foldable mast 3, which is composed of a lower mast element 4 and an upper mast element 5.
  • the lower mast element 4 is articulated by its base, about a horizontal axis 6, on the rotating platform 2, towards the front thereof.
  • the upper mast element 5 is articulated by its base, around a horizontal axis 7, at the top of the lower mast element 4.
  • the boom (not shown) of the crane is itself carried, articulated way by the top of the upper mast element 5.
  • the rotating platform 2 here includes, in its central part, a cabinet 8 between the two lateral parts of which is pivotally mounted the lower mast element 4.
  • the crane comprises two lateral mast struts 9, mounted between the rotating platform 2 and the mast 3. More particularly, each shroud 9 is hinged, on the one hand, at a point 10 situated on the rear of the mast. the cabinet 8 and, secondly, at a point 11 located on the upper mast element 5.
  • the two stays 9 are associated with a motorized control device for unfolding and folding the mast 3, which device is composed of a linkage 12 located in the region of the intermediate articulation (axis 7) of the mast 3, and a single cylinder 13 connecting the linkage 12 to an intermediate point 14 of the lower mast element 4.
  • the linkage 12 comprises, on each side of the region of the intermediate hinge of the mast 3, two connecting rods respectively articulated to the two elements of mast 4 and 5.
  • the crane further comprises a rear tie rod, not shown, which connects the rear portion of the rotating platform 2 to the arrow, to ensure the retention thereof.
  • This rear tie also controls the unfolding of the boom simultaneously with the unfolding of the mast 3 controlled by the device composed of the linkage 12 and the jack 13.
  • the crane comprises a mobile ballast device, designated as a whole by the reference 15.
  • the mobile ballast device 15 comprises a counterweight, which consists of two separate lateral blocks 16, arranged respectively above on both longitudinal sides of the rotating platform 2, in a symmetrical arrangement with respect to the vertical median plane of this platform. A central free space 17 is thus formed between the two constituent blocks 16 of the counterweight.
  • the counterweight consisting of the two blocks 16, is articulated to the rear part of the rotating platform 2 by means of two lateral plates 18, of elongated triangular shape, which extend substantially perpendicular to the longitudinal direction of this counterweight .
  • the axis of articulation, thus connecting the counterweight to the rotating platform 2, is a horizontal axis 19 which is located at the tip of the plates 18.
  • the portion of the counterweight furthest from these plates 18 is connected, by two lateral rods 20, to the upper mast element 5. More particularly, the two rods 20 are parallel and each connect one of the side blocks 16 of the counterweight to one side of the upper mast element 5. One end of each rod 20 is hingedly connected at a point 21 to the corresponding side block 9 while the other end of this rod 20 is articulated on a spacer lateral 22 carried by the upper mast element 5, in particular welded to this mast element.
  • the positions of the hinge points 21, and the spacers 22, offset the vertical planes of displacement of the two rods 20 outwardly, relative to the vertical displacement planes of the two shrouds 9. The latter thus occupy an "inner" position , avoiding any interference between the stays 9 on the one hand, and the connecting rods 20 on the other hand.
  • the counterweight consisting of the two blocks 16 is pivotally movable about the axis 19 between a rectified position of use ( figures 1 and 2 ) and a folded transport position ( figure 4 ), passing through intermediate positions such as that of the figure 3 .
  • Unfolding or folding the mast 3 of the crane controlled by the jack 13 associated with the linkage 12, is used to straighten the counterweight (blocks 16) and bring it to the use position, or to fold it down in working position, via connecting rods 20.
  • the two triangular side plates 18 extend substantially horizontally towards the rear of the hinge axis 19, which shifts the center of gravity of the counterweight (blocks 16) towards the rear, with respect to the axis of articulation 19, a distance equal to the sum of the half height of the 16 blocks and the length of a plate 18. It is therefore understandable to achieve a high counterweight, and long plates 18.
  • the counterweight (blocks 16) has a general orientation inclined at an angle A, which may be of the order of 30 °, relative to the horizontal, the counterweight rising from the rear to the front relatively to the rotating platform 2.
  • angle A which may be of the order of 30 °, relative to the horizontal
  • the blocks 16 constituting the counterweight are folded over the cabinet 8 present in the central part of the rotating platform 2.
  • the articulated structure of the crane including its boom here not shown, is lowered between the two blocks 16, and thus takes place in the central free space 17.

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

Claims (8)

  1. Transportierbarer Turmkran mit mobiler Ballastvorrichtung (15), wobei diese Vorrichtung (15) aus einem Gegengewicht (16) besteht, das über ein Gelenk (19) mit dem hinteren Bereich einer Drehplattform (2) des Krans verbunden und auch über mindestens eine Schubstange (20) mit einem Element eines ausfahrbaren und zusammenlegbaren Masts (3) des Krans gelenkig verbunden ist, derart, dass in der ausgefahrenen Nutzungsstellung des Krans das Gegengewicht (16) im Wesentlichen senkrecht über dem hinteren Bereich der Drehplattform (2) aufgerichtet wird, während in der zusammengelegten Transportstellung des Krans das Gegengewicht (16) über der Drehplattform (2) heruntergeklappt wird, dadurch gekennzeichnet, dass das Gegengewicht (16) einerseits an den hinteren Bereich der Drehplattform (2) mittels seitlicher Elemente (18) angelenkt ist, die sich im Wesentlichen lotrecht zur Längsrichtung des Gegengewichts (16) erstrecken, und dass dieses Gegengewicht (16) andererseits mittels der Schubstange oder der Schubstangen (20) mit dem oberen Element (5) des ausfahrbaren und zusammenlegbaren Masts (3) gelenkig verbunden ist.
  2. Transportierbarer Turmkran nach Anspruch 1, dadurch gekennzeichnet, dass das Gegengewicht (16) am hinteren Bereich der Drehplattform (2) mittels zweier Seitenplatten (18) länglicher Dreiecksform angelenkt ist, die fest mit diesem Gegengewicht (16) verbunden sind, wobei die Gelenkachse (19) sich in Höhe der Spitze dieser Platten (18) befindet.
  3. Transportierbarer Turmkran nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass in der umgeklappten Transportstellung das Gegengewicht (16) eine geneigte allgemeine Ausrichtung (A) besitzt, die bezüglich der Drehplattform (2) von hinten nach vorne ansteigt.
  4. Transportierbarer Turmkran nach Anspruch 3, dadurch gekennzeichnet, dass das Gegengewicht (16) auf ein Gehäuse (8) umgeklappt wird, das sich im zentralen Bereich der Drehplattform (2) befindet.
  5. Transportierbarer Turmkran nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass in der Transportstellung das Gegengewicht (16) oberhalb der Drehplatteform (2) in die Waagrechte umgeklappt wird.
  6. Transportierbarer Turmkran nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Gegengewicht aus zwei getrennten seitlichen Blöcken (16) besteht, die je oberhalb der zwei Längsseiten der Drehplattform (2) angeordnet sind.
  7. Transportierbarer Turmkran nach Anspruch 6, dadurch gekennzeichnet, dass zwei parallele Schubstangen (20) vorgesehen sind, die je einen der seitlichen Blöcke (16) des Gegengewichts mit einer Seite des oberen Mastelements (5) verbinden.
  8. Transportierbarer Turmkran nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass am oberen Mastelement (5) seitliche Abstandshalter (22) vorgesehen sind, an denen die Schubstangen (20) angelenkt sind und die die Verschiebungsebenen dieser Schubstangen (20) bezüglich der Verschiebungsebenen der Abspannanker (9) zum Aufrichten des Masts (3) nach außen verschieben, die eine "innere" Stellung einnehmen.
EP20070356042 2006-06-29 2007-04-03 Transportabler Turmkrahn mit einer mobilen Ballastvorrichtung Expired - Fee Related EP1873114B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0605877A FR2903095B1 (fr) 2006-06-29 2006-06-29 Dispositif de lest mobile pour grue a tour transportable

Publications (2)

Publication Number Publication Date
EP1873114A1 EP1873114A1 (de) 2008-01-02
EP1873114B1 true EP1873114B1 (de) 2008-12-31

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EP20070356042 Expired - Fee Related EP1873114B1 (de) 2006-06-29 2007-04-03 Transportabler Turmkrahn mit einer mobilen Ballastvorrichtung

Country Status (4)

Country Link
EP (1) EP1873114B1 (de)
DE (1) DE602007000430D1 (de)
ES (1) ES2320279T3 (de)
FR (1) FR2903095B1 (de)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE680166A (de) * 1965-05-07 1966-10-03
ES2054535B1 (es) * 1991-04-12 1995-08-01 Aldaz Alberto Munarriz Perfeccionamientos en el objeto de la patente principal n 9100941 por "sistema de contrapeso basculante para gruas desplegables".

Also Published As

Publication number Publication date
FR2903095A1 (fr) 2008-01-04
DE602007000430D1 (de) 2009-02-12
ES2320279T3 (es) 2009-05-20
EP1873114A1 (de) 2008-01-02
FR2903095B1 (fr) 2008-08-22

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