EP0734994A1 - Gegenwichtsstücke für Kräne und Befestigungsvorrichtung dafür - Google Patents

Gegenwichtsstücke für Kräne und Befestigungsvorrichtung dafür Download PDF

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Publication number
EP0734994A1
EP0734994A1 EP96420068A EP96420068A EP0734994A1 EP 0734994 A1 EP0734994 A1 EP 0734994A1 EP 96420068 A EP96420068 A EP 96420068A EP 96420068 A EP96420068 A EP 96420068A EP 0734994 A1 EP0734994 A1 EP 0734994A1
Authority
EP
European Patent Office
Prior art keywords
ballast
blocks
rod
centering
fixing device
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.)
Withdrawn
Application number
EP96420068A
Other languages
English (en)
French (fr)
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
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 EP0734994A1 publication Critical patent/EP0734994A1/de
Withdrawn legal-status Critical Current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
    • B66C23/74—Counterweights or supports for balancing lifting couples separate from jib

Definitions

  • the present invention relates to ballast blocks and their fixing device, these blocks being usable for ballasting and balancing cranes, in particular tower cranes of the automated assembly type.
  • the self-erecting tower cranes are provided with a fixed or rolling base chassis supporting, by means of an orientation device, a rotating chassis at the front of which is articulated a foldable or telescopic mast, kept vertical in the working position by guy ropes and carrying at its top a foldable arrow, retained in the deployed position by a set of punches and tie rods.
  • these cranes are generally equipped with a ballast called "assembly" fixed on the rear part of the rotating chassis and intended to ensure the stability of these cranes during automated unfolding / folding operations allowing the passage of a position transport folded to an unfolded working position and vice versa.
  • the assembly ballast consists of two parts designated as basic ballast blocks and arranged symmetrically on either side of the shrouds. In the working position, this assembly ballast is insufficient to ensure the stability and balancing of the crane, especially when it is lifting a load. Under these conditions, the ballasting of the crane is completed after its assembly by stacking, on the basic ballast blocks, complementary ballast blocks generally made of concrete, which can be placed either using an auxiliary machine. mounting, either using a mounting device, or even using the crane itself if the basic ballast is sufficient to ensure the stability of the crane in this load case.
  • ballast blocks of total height more or less important which requires to positively secure the complementary ballast blocks together, as well as with the basic ballast blocks themselves secured with the rotating chassis, to prevent the blocks from overturning in particular under the centrifugal effects and dynamics induced by the slewing movements of the crane.
  • ballast rods The installation of these ballast rods is usually carried out by two assemblers, a first operator presenting from the ground the ballast rods to a second operator who is mounted above the upper ballast blocks. The second operator places the ballast rods that he has grabbed over the ballast. These operations must be repeated each time the crane is assembled, and must also be performed in reverse with each dismantling of the crane. They are unnecessarily tedious, even dangerous, given the height of intervention of the second operator relative to the ground.
  • a ballasting device for a mobile crane formed of stacked blocks of ballast which are assembled two by two, by means of bolts .
  • the ballast blocks here have lateral notches, which come in alignment with each other to allow the installation of the assembly bolts.
  • the number of ballast blocks stacked on top of each other is very limited, and the stacking heights are reduced; it is thus possible to assemble these blocks two by two, by means of bolts.
  • the number of ballast blocks stacked on top of each other is generally high, and the stacking heights are significant. In this case, assembling the ballast blocks two by two would be a long and tedious operation. In addition, the assembly of the blocks located highest in the stack could not be done from the ground.
  • the present invention aims to remedy these drawbacks by providing ballast blocks and an associated fixing device, the elements of which are put in place from the ground by a single operator, in a quick, convenient, economical and, above all , safely, regardless of the stacking height of the ballast blocks, the invention thus providing a solution particularly suitable for tower cranes.
  • the invention essentially relates to ballast blocks and an associated fixing device, for cranes and in particular tower cranes comprising a fixed or rolling base chassis supporting, by means of an orientation device , a rotating chassis which carries a ballast in one or more parts at the rear, each composed of several blocks of ballast stacked one on the other, externally provided, on their lateral surface, with vertical notches coming in alignment with the one from the other, these ballast blocks being secured to one another as well as to the chassis rotating by a fixing device, characterized in that the vertical notches of the stacked ballast blocks, located in alignment with one another , receive vertical ballast rods, which can be engaged laterally in said notches, each ballast rod being provided, at its two ends, with centering and clamping means offset by rap port to the longitudinal axis of this rod, these means being fixedly mounted at one end of the rod and being removably mounted and lockable at its other end, while the upper faces of the ballast blocks, and at least the lower face of the ballast block located at
  • the ballast blocks are divided into two parts, arranged symmetrically one from the other at the rear of the rotating chassis of the crane, and each comprising a basic ballast block fixed firmly on sleepers of the rotating chassis, and complementary ballast blocks stacked on top of each other, comprising gripping means and positioning means with respect to each other and with respect to the basic ballast block, so that the notches vertical of all the superimposed ballast blocks are aligned, the complementary ballast blocks being provided on their upper faces with means receiving the centering and clamping means fixedly mounted at the upper end of each ballast rod, while the block of base ballast is provided on its underside with means receiving the centering and clamping means removably mounted and lockable at the base of each ballast.
  • the ballast rods are made of thin tubes, and are terminated, at their upper end, by a plate welded perpendicular to the longitudinal axis of the tube, the welded plate supporting, in the offset position relative to said longitudinal axis, a centering pin perpendicular to this plate and turned downwards, a space being provided between the outer face of the thin tube and the centering pin, and at their lower end by a threaded part, located in the axis of the thin tube and diameter smaller than that of the tube, receiving a removable plate supporting in the deported position a centering pin turned upward, the removable plate being pierced with a hole for the passage of the threaded part of the lower end of the ballast rod, receiving means for clamping said removable plate.
  • These clamping means provided for non-permanently fixing the removable plate on the lower end of the ballast rod, for example comprise a washer, a nut and a lock nut.
  • the ballast blocks are provided on their upper and / or lower faces with blind or through holes arranged in correspondence with the vertical notches of these blocks and designed to receive the centering pins of the plates mounted at the ends of the ballast rods housed in the aligned vertical notches of the stacked ballast blocks.
  • the ballast rods are made with one or more extensions of length equal to, or multiple of the thickness of the complementary ballast blocks, each ballast rod extension consisting of a thin tube, of which one end has a tapped hole and the other end has a threaded portion.
  • each ballast block has, on its lateral surface, two opposite vertical notches, one arranged on the front face, and the other on the rear face of the block, these notches being thus easily accessible for placing in place ballast rods which, given their number and arrangement, ensure good maintenance of the stacking of the ballast blocks.
  • ballast blocks and device associated fastening allowing the ballast blocks to be fixed together and also to secure them with the rotating chassis of the crane, the ballast rods being put in place from the ground, by a single operator, who can engage the end upper of each ballast rod, presented opposite a notch, on the ballast block located at the top of the stack, without having to climb on this stack, before fixing the lower end of said ballast rod under the basic ballast block.
  • the fixing device and the manual operations to be carried out remain the same regardless of the number of stacked ballast blocks, unlike the case of the aforementioned document GB-A-1179512 in which the ballast blocks are assembled in pairs. by means of bolts.
  • each part 3, 4 of the balancing ballast 2 comprises a base of ballast base 5, on which are stacked one or more blocks of complementary ballast 6 preferably identical to each other.
  • the different ballast blocks 5 and 6 are made of concrete.
  • the two basic ballast blocks 5 are used to assemble the crane, while the complementary ballast blocks 6 constitute the additional ballast necessary to ensure the stability and balancing of the crane in service when it is lifting loads more or less important.
  • the base ballast blocks 5 are fixed securely, and preferably permanently, on front 7 and rear 8 cross members of the rotating chassis 1 of the crane by means of threaded rods 9 passing vertically the blocks 5 by holes 10 drilled right through in these blocks 5 arranged in line with the sleepers 7.8 also drilled with holes 11, and fixed by sets of washers 12 and nuts 13.
  • the ballast blocks base 5 have on their lower face notches 14 of cross section conjugate with that of the crosspieces 7 and 8 to ensure the centering and positioning of the blocks on the crosspieces 7 and 8.
  • the ballast blocks 5 and 6 have on their lateral surface two vertical notches 15 arranged in opposite directions, one on the front face of blocks 5 and 6 and the other on the rear face of these blocks 5 and 6.
  • the complementary ballast blocks 6 comprise means (not shown) for gripping and centering, with respect to each other and also with respect to the base ballast blocks 5, so that the vertical notches 15 of the different ballast blocks 5 and 6, superimposed on one side and on the other side of the rotating chassis 1 of the crane, are aligned vertically and thus form long vertical notches, extending over the entire height of the two parts 3 and 4 of the balancing ballast 2.
  • the different ballast blocks 5 and 6 also include blind or through holes 16, opening on their upper and lower faces, and arranged in correspondence with the vertical notches 15 of these blocks 5 and 6.
  • each ballast rod 17 comprises a body 18 of relatively great length made of thin tube, terminated at its upper end by a plate 19 welded perpendicular to the longitudinal axis of the tube 18 and offset by relative to this longitudinal axis.
  • the welded plate 19 supports a centering pin 20, passing through this plate and turned downwards, the axis of the centering pin 20 being offset laterally by a distance D relative to the longitudinal axis of the tube 18 so as to spare a free space between the outer face of this tube 18 and the centering pin 20.
  • the tube 18 of the ballast rod 17 is closed by a solid welded disc 21, of diameter substantially equal to that of the tube 18, extended axially downwards by a threaded portion 22 of smaller diameter.
  • the removable plate 23 is pierced with a hole 24 sized for the passage of the threaded part 22 of the lower end of the rod ballast 17.
  • the removable plate 23 also includes a centering pin 25, offset laterally relative to the longitudinal axis of the ballast rod 17, and turned upwards.
  • FIG. 7 shows a ballast rod extension 26, intended to extend downward the main ballast rod 17 previously described.
  • the extension 26 comprises a body 27 also made of thin tube, terminated at its upper end by a solid disc 28, of diameter substantially equal to that of the tube 27, pierced in its center with a tapped hole 29 into which the screw is screwed.
  • ballast rod 17 optionally supplemented by one or more ballast rod extensions 26 abutted as a function of the stacking height of the ballast 5 and 6, with its welded upper plate 19 oriented facing the upper ballast block 6.
  • each ballast rod 17 is flanged by a nut tightening assembly 34 screwed onto the threaded part 22.
  • ballast rod 17 on the two parts 3 and 4 of the ballast 2.
  • the ballast blocks 5 and 6 are thus joined together, with each other and with the rotating chassis 1 of the crane, by means of ballast rods 17 which are all put in place and clamped from the outside, from the ground, by a single operator.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP96420068A 1995-03-28 1996-02-29 Gegenwichtsstücke für Kräne und Befestigungsvorrichtung dafür Withdrawn EP0734994A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9503981A FR2732323B1 (fr) 1995-03-28 1995-03-28 Blocs de lest pour grues et dispositif de fixation associe
FR9503981 1995-03-28

Publications (1)

Publication Number Publication Date
EP0734994A1 true EP0734994A1 (de) 1996-10-02

Family

ID=9477743

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96420068A Withdrawn EP0734994A1 (de) 1995-03-28 1996-02-29 Gegenwichtsstücke für Kräne und Befestigungsvorrichtung dafür

Country Status (3)

Country Link
EP (1) EP0734994A1 (de)
CN (1) CN1138006A (de)
FR (1) FR2732323B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007008318U1 (de) * 2007-04-13 2008-08-21 Liebherr-Werk Nenzing Gmbh Befestigungsvorrichtung und Gerät
BE1023013B1 (fr) * 2015-12-02 2016-11-04 Dufour Sa Contrepoids pour grues et procédé d'empiler des contrepoids pour grues
US9950912B2 (en) * 2014-05-26 2018-04-24 Xuzhou Heavy Machinery Co., Ltd. Combined counterweight hitching device and method thereof, and counterweight mounting structure
CN110077947A (zh) * 2019-05-06 2019-08-02 徐工集团工程机械股份有限公司建设机械分公司 平衡重紧固吊装装置及其履带起重机

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8960460B2 (en) * 2009-03-09 2015-02-24 Manitowoc Crane Companies, Llc Counterweight block and assemblies for cranes
CN102464267A (zh) * 2010-11-11 2012-05-23 徐州重型机械有限公司 一种起重机及其平衡重防倾装置
DE102016009040B4 (de) * 2016-07-25 2024-05-16 Liebherr-Werk Ehingen Gmbh Ballastiervorrichtung und Kran
CN116427384B (zh) * 2023-06-12 2023-08-25 中铁四局集团路桥工程有限公司 一种压力机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1208859B (de) * 1962-11-02 1966-01-13 Beteiligungs & Patentverw Gmbh Verfahren zur Herstellung eines Wippkran-Auslegers mit einem gegossenen Gegengewicht
GB1179512A (en) * 1967-07-04 1970-01-28 Schwermaschb Kirow Veb Improvements in or relating to Mobile Jib Cranes
FR2092660A1 (de) * 1970-06-05 1972-01-28 Richier Sa
EP0582401A1 (de) * 1992-08-07 1994-02-09 The Manitowoc Company Vorrichtung und Verfahren zum Anbringen des Gegengewichtes an Fahrzeugkränen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1208859B (de) * 1962-11-02 1966-01-13 Beteiligungs & Patentverw Gmbh Verfahren zur Herstellung eines Wippkran-Auslegers mit einem gegossenen Gegengewicht
GB1179512A (en) * 1967-07-04 1970-01-28 Schwermaschb Kirow Veb Improvements in or relating to Mobile Jib Cranes
FR2092660A1 (de) * 1970-06-05 1972-01-28 Richier Sa
EP0582401A1 (de) * 1992-08-07 1994-02-09 The Manitowoc Company Vorrichtung und Verfahren zum Anbringen des Gegengewichtes an Fahrzeugkränen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007008318U1 (de) * 2007-04-13 2008-08-21 Liebherr-Werk Nenzing Gmbh Befestigungsvorrichtung und Gerät
EP1980524A1 (de) 2007-04-13 2008-10-15 Liebherr-Werk Nenzing GmbH Befestigungsvorrichtung
US9950912B2 (en) * 2014-05-26 2018-04-24 Xuzhou Heavy Machinery Co., Ltd. Combined counterweight hitching device and method thereof, and counterweight mounting structure
BE1023013B1 (fr) * 2015-12-02 2016-11-04 Dufour Sa Contrepoids pour grues et procédé d'empiler des contrepoids pour grues
CN110077947A (zh) * 2019-05-06 2019-08-02 徐工集团工程机械股份有限公司建设机械分公司 平衡重紧固吊装装置及其履带起重机

Also Published As

Publication number Publication date
FR2732323A1 (fr) 1996-10-04
CN1138006A (zh) 1996-12-18
FR2732323B1 (fr) 1997-05-30

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