EP1072553B1 - Dispositif de repliage d'une flèche de grue à éléments emboítables - Google Patents

Dispositif de repliage d'une flèche de grue à éléments emboítables Download PDF

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Publication number
EP1072553B1
EP1072553B1 EP00420135A EP00420135A EP1072553B1 EP 1072553 B1 EP1072553 B1 EP 1072553B1 EP 00420135 A EP00420135 A EP 00420135A EP 00420135 A EP00420135 A EP 00420135A EP 1072553 B1 EP1072553 B1 EP 1072553B1
Authority
EP
European Patent Office
Prior art keywords
jib
crane
arrow
articulated
elements
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
EP00420135A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1072553A1 (fr
Inventor
Jean-Paul Verchere
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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Filing date
Publication date
Application filed by Potain SA filed Critical Potain SA
Publication of EP1072553A1 publication Critical patent/EP1072553A1/fr
Application granted granted Critical
Publication of EP1072553B1 publication Critical patent/EP1072553B1/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
    • B66C23/18—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
    • B66C23/18—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 an unfolding / folding device motorized, independently controlled, of a composite crane boom of elements linked together by articulation, with two elements of arrow consecutive fit into each other in the folded position of the arrow.
  • This known folding device further comprises a connecting rod of connection of the upper chords of the two boom members, said connecting rod being articulated at the front end of the upper chord of the foot of arrow, and being sliding in lateral guides in an arc provided at the back of the arrowhead.
  • the congestion of the arrow being mounting is always important, and does not prevent an obstacle possible.
  • the unfolding / folding of the arrowhead is impossible, when the crane is working, to avoid an obstacle or to distribute a load with a short arrow configuration.
  • French Patent Application No. 2,546,496 describes another tower crane with boom consisting of two elements hinged together, and nestable in the folded position. Both boom elements are hinged between them around a horizontal axis located halfway up the arrow, the foot arrowhead having here a U-shaped section, while the tip arrow has a triangular section.
  • the motorization of unfolding / folding the boom is provided by a cable associated with an arm of lever in an arc of a circle, itself powered by the articulation of the foot of arrow on the top of the mast of the crane.
  • This motorization device makes it possible to obtain a position in "Gooseneck" of the boom, while continuing to raise it.
  • it retains the same disadvantages as those of the document previous, because the kinematics of unfolding / folding the elements of arrow remains imposed by the movement of the foot of the arrow.
  • the present invention aims to remedy these drawbacks by providing a folding / unfolding device to avoid, in progress mounting or working the crane, obstacles such as buildings existing, trees, power lines ..., while allowing an increase load characteristics by folding the boom tip.
  • the subject of the invention is essentially a crane boom comprising a device of unfolding / folding motorized said crane boom composed of elements linked together by articulation, with two consecutive arrow elements nestable one inside the other in the folded position of the arrow, these two elements with respective sections allowing their interlocking, and being articulated to each other about a horizontal axis located substantially halfway up the boom, the forward boom element having, in its rear part, lateral guides in an arc receiving a transverse horizontal axis connected to the rear arrow element, the unfolding / folding device comprising, for its motorization, on the one hand a double-acting cylinder, located in the vertical median plane of the boom and articulated by a first end, about a horizontal axis, to the element rear boom at the height of the upper frame (s) of this element, and secondly, a crankshaft consisting of a straight rod articulated on the one hand to the second end of the cylinder and on the other hand to the rear part of the front boom element, in the lower part of
  • the right rod and the crank are one, one and the other, double rods, leaving a free passage to the cylinder.
  • the respective ends of these rods, opposite to those of the articulation of the cylinder, are preferably articulated to respective screeds, fixed one on the lower part of the front arrow element, and the other on the part bottom of the rear arrow element.
  • the output control of the cylinder rod allows unfolding arrow elements to an aligned relative position, and the return control of the cylinder rod allows the folding of the elements of arrow until they fit together, all relative positions intermediates that can also be obtained. So, the position of the tip is no longer imposed by that of the foot of the arrow, and the point of arrow can, at any time, be brought to a desired position for avoid an obstacle.
  • the arrowhead may be occasionally folded, to allow the work of the crane with a short arrow and thus increase the load characteristics of the crane.
  • the linkage is designed to allow 180 ° rotation of the boom element before, relative to the rear arrow element.
  • the rear part of the front boom element has two vertical side plates, in each of which is provided with a guide and stop light in arc shape, each light being traversed by one end of the transverse horizontal axis connected to the rear arrow element, and each side plate being traversed by the axis of articulation of the boom element forward relative to the rear boom element, located substantially midway up of the arrow.
  • the hinge axis of the boom element forward relative to the rear boom element, located substantially midway up of the arrow includes a functional game, so as to release this axis of any effort, to make the linking system of the two isostatic arrow elements when aligned.
  • the front ends of the frames of the rear boom element are connected by a transverse stiffening sleeve, crossed by the horizontal axis transversal aforementioned.
  • the lower chords of the rear boom element their front end, means of support and guidance for the ends rear of the lower chords of the front boom member; these means preferably include, at the front end of each lower chord of the rear boom element, a horizontal support, a lower guide provided by a support plate, and lateral guidance provided by a support plate with ramp, such a combination allowing all efforts to be resumed and to precisely align the lower chords of the two boom members so as to form a continuous raceway for the carriage movable along the arrow.
  • Figures 1 to 3 show a folding tower crane which includes a fixed base frame 1 on which a frame is mounted rotating 3, steerable about a vertical axis 2.
  • the crane includes a mast 4, made in two elements 5 and 6 hinged together about an axis horizontal 7.
  • the lower mast element 5 is articulated by its base, around of a horizontal axis 8, at the front of the rotating frame 3.
  • At the top of the upper mast element 6 is hinged around a horizontal axis 9, an arrow 10 along which is movable a carriage 11, the arrow 10 being composed here of two elements, an arrow foot 12 and a Arrowhead 13.
  • the crane still includes struts 14 mast training 4, a retainer 15 of the arrow 10, and a ballast 16 carried by the rear part of the rotating frame 3.
  • the arrow foot 12 has a triangular section
  • the Arrowhead 13 has a U-shaped section.
  • This tip 13 is articulated, by its rear part, to the front part of the foot of arrow 12, about a horizontal axis 17 located substantially at half height of the boom 10.
  • the two mast elements 5 and 6 are arranged horizontally one above on the other, and the two arrow elements 12 and 13 are also arranged horizontally, above the mast elements 5 and 6, these two elements 12 and 13 being interlocked one inside the other, the section triangular foot of the arrow 12 nesting in the "U" section of the arrowhead 13 returned (see also Figure 8).
  • the foot of boom 12 comprises two lower chords 18 serving as rolling path to the carriage 11, and an upper chord 19, defining the triangular running section of the arrow foot 12.
  • the tip 13 comprises two lower chords 20, and two chords The chords are interconnected in the different faces of the two boom elements 12 and 13, by lattice structures 22, 23 and by lower cross members 24, 25.
  • chord 19 is divided into two symmetrical branches 26, the front ends are connected by a transverse stiffening sleeve 49, crossed by a horizontal axis 27 which is located at the height of upper ribs 21 of the boom tip 13.
  • Two plates side 28 connect the ends of the sleeve 49 to the front ends of the two lower chords 18 of the jib 12.
  • This axis horizontal 17 has a functional game, freeing it from everything effort to make the isostatic binding system when arrow 10 is aligned.
  • each side plate 29 of the arrowhead 13 is provided a hinge light in the form of an arc 30, centered on the horizontal axis 17.
  • the two arcuate lights 30 are crossed by the ends of the horizontal axis 27, located at the front of the foot 12.
  • This axis 27 is provided at each end with a lateral locking 31 such as head or washer.
  • the articulation described above is motorized by a jack double acting 32 and a connecting rod 33.
  • the jack 32 located in the vertical median plane of the arrow 10, has a body 34 articulated by its rear end, about an axis horizontal 35, at the foot of arrow 12 at the height of the upper chord 19, especially to the point where this upper chord 19 is divided into two branches 26.
  • the rod 36 of the cylinder 32 is articulated by its end before, around a horizontal axis 37, at one end of a first connecting rod 38 belonging to the crankshaft 33.
  • the connecting rod 38 is a double right connecting rod, whose end lower is articulated around a horizontal axis 39 to a clevis 40 fixed on the lower rear crossmember 25 of the boom tip 13.
  • the linkage 33 comprises another double rod 41, shaped bent.
  • One end of the double cranked rod 41 is hinged, around of the aforementioned horizontal axis 37, at the front end of the rod 36 of the jack 32.
  • the other end of the double cranked rod 41 is articulated, around a horizontal axis 42, to a clevis 43 fixed on the lower front cross member 24 the foot of the arrow 12.
  • the elbow 44 of the double rod 41 leaves the passage to the axis 27, as shown in particular in FIGS. twin rod configuration of this crank 41, as well as the first rod 38, leaves a free passage to the rod 36 of the cylinder 32.
  • the fully extended position of the rod 36 of the cylinder 32 corresponds to the aligned position of the arrow 10, illustrated in FIGS. 6.
  • the horizontal axis 27 abuts at one end of arcuate lights 30, which ensures the connection and continuity of the respective upper chords 19, 26 and 21 of the boom foot 12 and the arrowhead 13.
  • the folding of the arrow 10 is obtained by controlling the cylinder 32 in the direction of the retraction of its stem 36.
  • the jib foot 12 being maintained substantially horizontal, the arrowhead 13 pivots around the horizontal axis 17 and then raises according to the arrow 48, through positions intermediates, one of which is illustrated in Figure 7.
  • the reverse control of the jack 32 that is to say in the direction of the output of its rod 36, causes the reverse movement of unfolding of the arrow 10, bringing the arrowhead 13 into alignment with the foot of arrow 12.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP00420135A 1999-07-22 2000-06-22 Dispositif de repliage d'une flèche de grue à éléments emboítables Expired - Lifetime EP1072553B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9909688A FR2796632B1 (fr) 1999-07-22 1999-07-22 Dispositif de repliage d'une fleche de grue a elements emboitables
FR9909688 1999-07-22

Publications (2)

Publication Number Publication Date
EP1072553A1 EP1072553A1 (fr) 2001-01-31
EP1072553B1 true EP1072553B1 (fr) 2004-01-02

Family

ID=9548525

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00420135A Expired - Lifetime EP1072553B1 (fr) 1999-07-22 2000-06-22 Dispositif de repliage d'une flèche de grue à éléments emboítables

Country Status (7)

Country Link
US (1) US6290078B1 (es)
EP (1) EP1072553B1 (es)
JP (1) JP2001063961A (es)
DE (1) DE60007488T2 (es)
ES (1) ES2211485T3 (es)
FR (1) FR2796632B1 (es)
RU (1) RU2249561C2 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110520581A (zh) * 2017-03-07 2019-11-29 普茨迈斯特工程有限公司 带有减少结构空间的折入位置的悬臂系统

Families Citing this family (8)

* 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
AT508171A1 (de) * 2009-05-07 2010-11-15 Epsilon Kran Gmbh Kran mit totpunktüberwindung
CN104340882B (zh) * 2014-09-25 2016-12-07 中联重科股份有限公司 折叠臂架和起重机
AR098042A1 (es) * 2014-10-16 2016-04-27 Pablo Ribotta Esteban Brazo articulado porta-boquillas para pulverizadora agrícola
FR3046149B1 (fr) * 2015-12-23 2017-12-29 Manitowoc Crane Group France Grue a tour a depliage et repliage automatiques et comprenant un mat et une fleche decalee par rapport au mat
DE102016015385A1 (de) * 2016-12-22 2018-06-28 Liebherr-Werk Biberach Gmbh Kran mit Abklappausleger
ES2910102A1 (es) * 2020-11-09 2022-05-11 Saez Machinery S L Grua torre de plegado y desplegado automatizado

Family Cites Families (14)

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Publication number Priority date Publication date Assignee Title
US2581087A (en) * 1947-12-22 1952-01-01 Lourie L Eakin Hoisting apparatus
US2689053A (en) * 1948-10-18 1954-09-14 Lourie L Eakin Hoisting apparatus
US2901125A (en) * 1954-06-22 1959-08-25 J H Holan Corp Derricks
US3032207A (en) * 1960-02-23 1962-05-01 Humboldt Company Loading boom with adjustable extension arm
US3426916A (en) * 1967-06-29 1969-02-11 Bucyrus Erie Co Boom retracting machinery
US3944081A (en) * 1969-04-09 1976-03-16 General Crane Industries Limited Tower crane
US3819059A (en) * 1972-01-19 1974-06-25 Mantel Brothers Proprietary Lt Foldable cranes
US4150754A (en) * 1977-05-23 1979-04-24 Ami Industries, Inc. Utility crane
NO147229C (no) * 1981-02-11 1983-03-02 Kverneland As Anordning ved hengsle, saerlig for jordbruksredskaper
IT1164241B (it) 1983-05-25 1987-04-08 Luigi Cattaneo Spa Gru articolata ad innalzamento automatico
DE3441573A1 (de) 1984-11-14 1986-05-15 Peiner Hebe- Und Transportsysteme Gmbh, 5500 Trier Turmkran mit geteiltem ausleger
IT1182698B (it) * 1985-11-22 1987-10-05 Andrea Ferreri Braccio per gru
US4775287A (en) * 1987-05-18 1988-10-04 Hering Sr James R Adjustable boom
DE9316113U1 (de) * 1993-10-21 1995-02-16 Liebherr-Werk Biberach GmbH, 88400 Biberach Turmdrehkran

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110520581A (zh) * 2017-03-07 2019-11-29 普茨迈斯特工程有限公司 带有减少结构空间的折入位置的悬臂系统

Also Published As

Publication number Publication date
RU2249561C2 (ru) 2005-04-10
ES2211485T3 (es) 2004-07-16
FR2796632B1 (fr) 2001-08-24
JP2001063961A (ja) 2001-03-13
EP1072553A1 (fr) 2001-01-31
DE60007488T2 (de) 2004-11-25
DE60007488D1 (de) 2004-02-05
US6290078B1 (en) 2001-09-18
FR2796632A1 (fr) 2001-01-26

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