EP1352870B1 - Vorrichtung zum Anheben und Aufklappen von dem Mast und zum Anheben von dem Ausleger eines Kranes - Google Patents

Vorrichtung zum Anheben und Aufklappen von dem Mast und zum Anheben von dem Ausleger eines Kranes Download PDF

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Publication number
EP1352870B1
EP1352870B1 EP03356043A EP03356043A EP1352870B1 EP 1352870 B1 EP1352870 B1 EP 1352870B1 EP 03356043 A EP03356043 A EP 03356043A EP 03356043 A EP03356043 A EP 03356043A EP 1352870 B1 EP1352870 B1 EP 1352870B1
Authority
EP
European Patent Office
Prior art keywords
mast
articulated
jib
jack
rod
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
EP03356043A
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English (en)
French (fr)
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EP1352870A1 (de
Inventor
Aimé Gaillard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manitowoc Crane Group France SAS
Original Assignee
Potain SA
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Publication of EP1352870A1 publication Critical patent/EP1352870A1/de
Application granted granted Critical
Publication of EP1352870B1 publication Critical patent/EP1352870B1/de
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
    • B66C23/18—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

Definitions

  • the present invention relates to lifting or handling equipment, and more particularly cranes.
  • This invention relates, more specifically, to a motorized device for lifting and unfolding the mast and lifting the boom of a crane, and even more particularly a crane with multi-function boom as described by the document FR 2792627 A in the name of the Applicant.
  • This document relates to a crane configuration changeable, which comprises a mast mounted on a frame, and a distributing arrow composed of successive elements articulated together about horizontal axes, the first boom element said arrow foot being itself even articulated around a horizontal axis at the top of the mast.
  • This first boom element, and possibly the next element can be brought in a substantially vertical position, in alignment with the erected mast, so as to raise this mast. All boom elements have a raceway for the same carriage.
  • the crane can be used as a long or shortened, horizontal or inclined distributor crane, or as a "gooseneck" boom crane, depending on the configuration of the boom elements, the height of the crane being also adjustable according to the number of boom elements brought into the extension of the mast.
  • the mast can itself be foldable and usable in several positions, the various configurations of the boom elements can thus be combined with the variable configurations of the mast.
  • the foldable mast is composed of two mast elements, namely a lower mast member hinged to the crane frame, and an upper mast member hinged to the top of the lower mast member.
  • the lower mast element is in particular articulated on a rotating frame, orientable about a vertical axis on a base frame, mounted on wheels, the crane can thus be presented as a self-propelled crane.
  • the aforementioned document provides devices with cylinder, or cylinder and linkage. This results in a multiplicity of jacks and linkages, given the total number of joints to motorize.
  • the motorized lifting and unfolding device comprises a jack located between the two elements of the mast, and articulated on the one hand on the lower part of the lower mast element, on the other hand on the lower part of the upper mast element via a crankshaft.
  • the unfolding of the mast is achieved using this linkage.
  • the lifting of the boom is achieved by means of a tie rod connected on the one hand to a fixed point of the rotating frame of the crane, and on the other hand to a fixed point of the boom.
  • the present invention aims to avoid the aforementioned disadvantages, by providing an improved device for lifting and unfolding the mast and lifting the boom of a crane, more particularly adapted to a crane with multi-function boom, this device comprising a number a minimum of cylinders that can be used both for lifting-unfolding and for working the crane, while allowing various configurations of this crane, while having a small footprint, in particular to reduce the height of the crane in the folded transport position.
  • the subject of the invention is a motorized device for raising and unfolding the mast and for lifting the boom of a crane of the type concerned, this device essentially comprising a double-acting hydraulic cylinder, the two ends of which are connected respectively has a lower linkage and upper linkage, the lower linkage for raising and unfolding the mast being also connected to the lower part of the upper mast element and the upper part of the lower mast element, and the connecting rod assembly upper device for raising the boom and moving it in various working positions being also connected to the upper part of the upper mast element and to the foot of boom, the device further comprising at least one stay connecting the lower part of the mast element greater than a point of the frame of the crane on which is articulated the lower part of the lower mast element, and locking means of the lower end of the aforementioned cylinder, in at least two distinct positions, on the lower part of the upper mast element, and finally a stop located in the upper part of the upper mast element and intended to cooperate with the upper linkage.
  • the inventive idea is to provide a single cylinder, associated with two linkages to achieve both the functions of unfolding-folding the mast, lifting-lowering of the boom, and work in "flight of arrow", c that is to say with a movement of raising the boom.
  • the two locking positions of the cylinder are involved, respectively, in the "unfolded mast” position and in the "folded mast” position.
  • the proposed system has a simple and safe kinematics: it involves neither combination of movements, nor manual intervention in its operation. It also provides complete independence of the movements and positions of the mast and the boom, allowing all possible configurations, in particular from a position with a substantially horizontal folded mast, or a position with a substantially vertical unfolded mast.
  • the need for a single cylinder for various movements or functions also leads to an economic realization. Furthermore, the cylinder is not positioned between the two mast members when they are folded, but it rests on the upper mast element, which increases the viewing angle of the driver from his cabin .
  • the lower linkage comprises a first connecting rod, preferably a double rod, articulated at one of its ends to the corresponding end of the jack, hinged at an intermediate point to the lower part of the upper mast element, and hinged at its other end at one end of a secnde connecting rod, preferably a double rod, itself articulated at its other end to the upper part of the lower mast element.
  • the upper linkage it advantageously comprises a bent rod, preferably a double rod, articulated at one of its ends to the upper part of the upper mast member and hinged at its other end, to both at the corresponding end of the cylinder and at one end of another rod, preferably a single rod, the other end is articulated to the foot of arrow.
  • the cranked rod here allows the upper linkage to "bypass" the articulation of the arrow foot at the top of the mast.
  • the purpose of the interlocks is not to introduce unnecessary stresses in the lower linkage, in particular by preventing the rotation of the first link (at three points) of this linkage in the folded transport position.
  • the main cylinder not only allows the lifting of the mast and the jib foot, during the initial installation of the crane, but also obtaining all intermediate jib positions, by ordering the more or less significant output of the rod of this cylinder.
  • the boom itself consists of two or more elements, articulated together, the unfolding of these boom elements relative to each other is obtained by an auxiliary motor, in particular by jack and linkage, not directly concerned. by the present invention.
  • the crane shown in the drawing in various positions, has a base carrier frame 1, mounted on wheels 2 and provided with stabilizers 3. On the base frame 1 is mounted a rotating frame 4, orientable about a vertical axis 5, and provided with a driving cabin 6 on one of its sides.
  • a folding mast 7, composed of a lower mast member 8 and an upper mast member 9, each of polygonal section and box structure.
  • the lower mast element 8 is articulated by its base, around a horizontal axis 10, on a lower part of the rotating frame 4.
  • the upper mast element 9 is articulated by its base, around a horizontal axis 12 at the top of the mast element lower 8, this intermediate articulation of the mast 7 allowing a relative pivoting of the elements 8 and 9 on an angle of about 180 °.
  • the folding mast 7 is held by a double guy 13, which connects the base of the upper mast member 9 to the upper part of the rotating frame 4.
  • the folding mast 7 carries a distributing arrow 14, which is composed of three successive arrow elements 15, 16 and 17, each of box structure, all of which comprise, at their lower face, a path of bearing 18 for an arrow cart 19.
  • the second boom element 16 is articulated by its rear end, about a horizontal axis 21, to the front end of the boom foot 15.
  • the crane is provided with a motorized device, designated generally by 23, for raising and unfolding its mast 7 and raising its boom 14.
  • the device 23 comprises a hydraulic cylinder 24, a lower linkage 25 and an upper linkage 26 .
  • the hydraulic cylinder 24, which is a double-acting cylinder, has a body 27 whose end is connected to the lower linkage 25, and a rod 28 whose end is connected to the upper linkage 26.
  • the double rod 33 is hinged about an axis 34 on the upper part of the lower mast element 8.
  • the simple connecting rod 38 is articulated at its other end, about an axis 39, with the jib foot 15.
  • the device 23 also comprises a locking system 40 of the lower end of the jack 24, hence the end of the body 27 of the jack 24, this locking system 40 being located at the base of the upper mast element 9 , and being shown more particularly in FIGS. 12 to 14.
  • the locking system 40 further comprises a guide assembly, consisting of two parallel slides 47 and 48, carried by the upper mast element 9 and also extending parallel to this mast element 9.
  • the two slides 47 and 48 are provided with matching pinholes, which comprise on the one hand a pair of lower pinholes 49, and on the other hand a pair of upper pinholes 50.
  • the two pins 44 and 45 of the lock 41 are provided to be engaged in the lower broaching holes 49 (in the "folded mast” position), or in the upper broaching holes 50 (in the "unfolded mast” position), the cylinder head 42 being movably mounted between the two slides 47 and 48.
  • the device 23 comprises a stop 51, located at the top of the upper mast element 9 (see FIGS. 2 and 3), and cooperating with the upper linkage 26, more particularly with the double cranked rod 35, so as to stopping rotation of this rod 35 in certain phases of operation.
  • the operation of the device 23 is established as follows, starting from the folded crane transport position (FIG. 1):
  • the two mast elements 8 and 9 have then come into abutment against each other, by means of support plates situated respectively at the top of the lower mast element 8 and at the base of the element. 9. These two mast elements 8 and 9 are thus stopped in aligned position. The arrow 14 remains, until then, folded against the mast 7.
  • the jack 24 is controlled in the direction of the output of its rod 28, which actuates the upper linkage 26 and causes the lifting of the jib foot 15, to a substantially horizontal position, in fact a position slightly inclined upwards (for example at an angle of about 5 °) - see figure 5.
  • the intermediate element 16 of the boom 14, and the boom tip 17, then remain folded over the boom foot 15.
  • the lifting and unfolding operations of the mast 7 and the boom 14, and the reverse folding and lowering operations are performed according to an automatic cycle, driven by a control unit comprising a computer.
  • This triggers the succession of movement commands, taking into account the information provided by a set of sensors, for example force, position and speed sensors, to perform a preprogrammed movement cycle of which each phase is controlled by sensors that allow or not the control of the next phase.
  • the crane can still be used in another configuration, illustrated in Figure 9, in which its mast 7 is partially unfolded, and supported on the rotating frame via a rear stand 52.
  • This configuration allows a distribution of loads associated with a possibility of displacement of the base carrier frame 1, for example for the loading and unloading of trucks.
  • the longitudinal axis of the boom 14 is advantageously offset laterally with respect to the longitudinal axis of the mast 7, and also with respect to the device 23, the boom foot 15 being thus located on the side of the upper linkage 26.
  • the simple connecting rod 38 of the upper linkage 26 is articulated about an axis 39 secured to the clevises of a cross member 53 laterally welded to the boom foot 15. Due to this lateral offset, an additional gain in lateral visibility is obtained for the driver posted in the driver's cab 6 when the crane is in the folded transport position.

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

Claims (6)

  1. Motorgetriebene Vorrichtung zum Aufrichten und Ausfahren des Mastes und zum Zusammenlegen des Auslegers eines Krans, genauer gesagt, eines Krans mit Multifunktions-Ausleger mit veränderbarer Konfiguration, der einen umklappbaren Mast (7) hat, der zusammengesetzt ist aus einem unteren Mastelement (8), das an einem Gestell (4) beweglich montiert ist, und einem oberen Mastelement (9), das an der Spitze des unteren Mastelements (8) beweglich montiert ist, sowie einen Verteilerausleger (14) hat, der aus aufeinanderfolgenden, gelenkig miteinander verbundenen Elementen (15, 16, 17) zusammengesetzt ist, wobei das erste Auslegerelement, Auslegerfuß (15) genannt, seinerseits an der Spitze des Mastes (7) beweglich montiert ist, und wobei dieses erste Auslegerelement (15), und möglicherweise das folgende Element (16), in eine im wesentlichen senkrechte Stellung entsprechend der Ausrichtung des aufgerichteten Mastes (7) gebracht werden können, so dass dieser Mast (7) aufgestockt wird, wobei alle Auslegerelemente (15, 16, 17) eine Rollbahn (18) für denselben Laufwagen (19) haben, dadurch gekennzeichnet, dass die Vorrichtung einen doppelt wirkenden Hydraulikzylinder (24) umfasst, dessen zwei Enden mit einem unteren Stangensatz (25) beziehungsweise einem oberen Stangensatz (26) verbunden sind, wobei der zum Aufrichten und Ausfahren des Mastes (7) bestimmte untere Stangensatz (25) auch mit dem unteren Teil des oberen Mastelements (9) und mit dem oberen Teil des unteren Mastelements (8) verbunden ist, und wobei der zum Aufrichten des Auslegers (14) und dessen Bewegung in diverse Arbeitsstellungen bestimmte obere Stangensatz (26) auch mit dem oberen Teil des oberen Mastelements (9) und dem Auslegerfuß (15) verbunden ist, und wobei die Vorrichtung auch noch mindestens ein Ankerseil (13) umfasst, das den unteren Teil des oberen Mastelements (9) mit einem Punkt des Gestells (4) des Krans verbindet, an dem der untere Teil des unteren Mastelements (8) beweglich montiert ist, sowie Mittel (40) umfasst zum Verriegeln des unteren Endes des vorgenannten Hydraulikzylinders (24) in mindestens zwei unterschiedenen Stellungen am unteren Teil des oberen Mastelements (9), sowie schließlich einen Anschlag (51), der am oberen Teil des oberen Mastelements (9) angeordnet und vorgesehen ist, um mit dem oberen Stangensatz (26) zusammenzuwirken.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der untere Stangensatz (25) ein erstes Pleuel (29), vorzugsweise ein Doppel-Pleuel, umfasst, das an einem seiner Enden (30) mit dem entsprechenden Ende des Hydraulikzylinders (24) gelenkig verbunden ist, sowie an einem Zwischenpunkt (31) am unteren Teil des oberen Mastelements (9) angelenkt ist, und an seinem anderen Ende (32) mit einem Ende eines zweiten Pleuels (33), vorzugsweise eines Doppel-Pleuels, gelenkig verbunden ist, das seinerseits an seinem anderen Ende (34) am oberen Teil des unteren Mastelements (8) angelenkt ist.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der obere Stangensatz (26) ein erstes gekrümmtes Pleuel (35), vorzugsweise ein Doppel-Pleuel, umfasst, das an einem seiner Enden (36) mit dem oberen Teil des oberen Mastelements (9) gelenkig verbunden ist, und an seinem anderen Ende (37) eine Gelenkverbindung sowohl mit dem entsprechenden Ende des Hydraulikzylinders (24) als auch mit einem Ende eines anderen Pleuels (38), vorzugsweise eines einfachen Pleuels, hat, dessen anderes Ende (39) am Auslegerfuß (15) angelenkt ist.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Mittel (40) zum Verriegeln des unteren Endes des Hydraulikzylinders (24) an dem unteren Teil des oberen Mastelements (9) umfassen:
    - einerseits, am unteren Ende des Hydraulikzylinders (24) einen Querriegel (41), der von einem doppelt wirkenden Hilfszylinder (43) gebildet wird, dessen Gehäuse und dessen Kolbenstange jeweils mit zwei entgegengesetzten Achsbolzen (44, 45) fest verbunden sind, die in den jeweiligen Seitenteilen eines Kopfes (42) des Hauptzylinders gleitend montiert sind, wobei eine Sicherheitsfeder (46) vorgesehen ist, um den Riegel (41) in aktiver Stellung zu halten;
    - andererseits, am unteren Teil des oberen Mastelements (9) einen Führungssatz, der aus zwei Gleitschienen (47, 48) besteht, die zu diesem Mastelement (9) parallel laufen und die jeweils mit unteren (49) und oberen (50) Positionierlöchern versehen sind, die korrespondierend angeordnet sind, wobei der Zylinderkopf (42) zwischen den zwei Gleitschienen (47, 48) verschiebbar montiert ist, deren untere Positionierlöcher (49) vorgesehen sind, um jeweils die zwei Achsbolzen (44, 45) des Riegels (41) in der Stellung "Mast eingeklappt" aufzunehmen, und deren obere Positionierlöcher (50) vorgesehen sind, um jeweils die zwei Achsbolzen (44, 45) des Riegels (41) in der Stellung "Mast ausgefahren" aufzunehmen.
  5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Hydraulikzylinder (24) nicht nur für das Aufrichten des Mastes (7) und des Auslegerfußes (15) bei der erstmaligen Aufstellung des Krans vorgesehen ist, sondern auch noch für die Herstellung aller möglichen Zwischenstellungen des Auslegers, und zwar durch Steuerung des mehr oder weniger großen Hubs der Kolbenstange (28) dieses Zylinders (24).
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Längsachse des Auslegers (14) seitlich verschoben ist bezogen auf die Längsachse des Mastes (7) und auch bezogen auf die Vorrichtung (23), wobei sich der Auslegerfuß (15) an der Seite des oberen Stangensatzes (26) befindet.
EP03356043A 2002-04-12 2003-03-10 Vorrichtung zum Anheben und Aufklappen von dem Mast und zum Anheben von dem Ausleger eines Kranes Expired - Lifetime EP1352870B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0204606A FR2838415B1 (fr) 2002-04-12 2002-04-12 Dispositif de relevage et depliage du mat et de relevage de la fleche d'une grue
FR0204606 2002-04-12

Publications (2)

Publication Number Publication Date
EP1352870A1 EP1352870A1 (de) 2003-10-15
EP1352870B1 true EP1352870B1 (de) 2007-04-04

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EP03356043A Expired - Lifetime EP1352870B1 (de) 2002-04-12 2003-03-10 Vorrichtung zum Anheben und Aufklappen von dem Mast und zum Anheben von dem Ausleger eines Kranes

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Country Link
US (1) US6991120B2 (de)
EP (1) EP1352870B1 (de)
JP (1) JP4185802B2 (de)
DE (1) DE60312913T2 (de)
ES (1) ES2285068T3 (de)
FR (1) FR2838415B1 (de)
RU (1) RU2307062C2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101691190B (zh) * 2009-09-29 2012-01-04 秦皇岛天业通联重工股份有限公司 一种散货起重机

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008007970U1 (de) * 2008-06-13 2008-09-04 Bauer Maschinen Gmbh Bauarbeitsgerät mit schwenkbarem Mast
FR3044304B1 (fr) * 2015-11-27 2018-09-21 David Broennec Dispositif de levage pour pose de vitrage
CN107043078B (zh) * 2017-03-27 2018-12-14 绍兴明煌科技有限公司 一种可折叠式小型电力设备起落装置
FR3125032B1 (fr) * 2021-07-06 2023-07-07 Manitowoc Crane Group France Procédé de pilotage de grue pour sélectionner et appliquer une courbe de charge préférentielle en fonction de l’inclinaison d’un élément structurel de flèche

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1172323A (fr) 1956-02-17 1959-02-09 Chariot tracteur, notamment pour appareils de levage
IT1164241B (it) * 1983-05-25 1987-04-08 Luigi Cattaneo Spa Gru articolata ad innalzamento automatico
FR2548646B1 (fr) * 1983-07-05 1985-12-13 Cadillon Grue repliable a deploiement rapide
FR2605619B1 (fr) * 1986-10-27 1989-03-31 Potain Sa Engin repliable pour la manutention et le levage des charges
FR2731999B1 (fr) * 1995-03-21 1997-05-30 Potain Sa Grue a montage automatise avec fleche repliable lateralement
FR2765564B1 (fr) * 1997-07-02 1999-08-27 Potain Sa Mature pliable en trois elements avec dispositif de pliage/depliage pour grue a tour
FR2792627B1 (fr) * 1999-04-23 2001-06-01 Potain Sa Grue avec fleche a fonctions multiples
EP1172323A1 (de) * 2000-07-11 2002-01-16 Jean-Marc Yerly Kran mit aus Gliedern bestehendem Kranarm

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101691190B (zh) * 2009-09-29 2012-01-04 秦皇岛天业通联重工股份有限公司 一种散货起重机

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Publication number Publication date
US6991120B2 (en) 2006-01-31
DE60312913T2 (de) 2007-12-13
RU2307062C2 (ru) 2007-09-27
JP2003306295A (ja) 2003-10-28
US20030196982A1 (en) 2003-10-23
ES2285068T3 (es) 2007-11-16
EP1352870A1 (de) 2003-10-15
FR2838415B1 (fr) 2004-10-01
JP4185802B2 (ja) 2008-11-26
DE60312913D1 (de) 2007-05-16
FR2838415A1 (fr) 2003-10-17

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