EP1418151B1 - Châssis avec des dispositifs d'articulation pour des bras d'appui - Google Patents

Châssis avec des dispositifs d'articulation pour des bras d'appui Download PDF

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Publication number
EP1418151B1
EP1418151B1 EP20030356151 EP03356151A EP1418151B1 EP 1418151 B1 EP1418151 B1 EP 1418151B1 EP 20030356151 EP20030356151 EP 20030356151 EP 03356151 A EP03356151 A EP 03356151A EP 1418151 B1 EP1418151 B1 EP 1418151B1
Authority
EP
European Patent Office
Prior art keywords
chassis
shaft
metal sheet
articulation
arm
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
EP20030356151
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1418151A1 (fr
EP1418151A8 (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
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 EP1418151A1 publication Critical patent/EP1418151A1/fr
Publication of EP1418151A8 publication Critical patent/EP1418151A8/fr
Application granted granted Critical
Publication of EP1418151B1 publication Critical patent/EP1418151B1/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
    • B66C23/62—Constructional features or details
    • 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
    • B66C23/78—Supports, e.g. outriggers, for mobile cranes

Definitions

  • the present invention relates to a chassis comprising support arms on the ground, each articulated to the chassis by a hinge device, for a machine, in particular a hoist and, more particularly, a tower crane.
  • the most common ground support system consists of four support arms, articulated to the frame.
  • Each arm made of sheet metal and having a box structure, has at its free end an adjustable foot support on the ground.
  • the other end of this support arm is articulated to the frame about a vertical axis, which allows the folding of the arm against the frame for the transport of the crane.
  • the articulating device of the arm on the chassis is of the chapetenon type, with a simple axis, the clevis being constituted by an upper plate of the frame and a bottom plate of the frame (in a corner zone of this frame), with a vertical clearance for the assembly of the arm with the frame, and the pivoting of said arm.
  • the game must take into account the superposition tolerances of the sheets that constitute the box structure of the arm, and also the realization of the frame. Thus this game can be relatively important and reach values of the order of 15 mm.
  • the correct support of the crane in working position, on the four arms deployed, is ensured by a perfect contact between the upper bearing surface of the arms, on the one hand, and the lower bearing surface of the upper plate chassis, on the other hand.
  • the aforementioned game is then located at the lower part of the arms and the frame.
  • each arm is supported on the lower plate of the frame, because of the weight of this arm.
  • the game is located at the top of the arms and the chassis.
  • the arms When placing the crane on the ground, the arms are supported successively on the ground by their respective feet.
  • the frame When placing an arm on the ground, the frame lowers until it comes into contact, by the support surface of its upper sheet, with the upper bearing surface of the arm concerned. At this moment, the frame slides downwards, along the hinge axis of the arm to the frame.
  • the document FR-A-673782 discloses a similar ground support system for a transport vehicle of a hoisting apparatus such as a crane, this vehicle comprising a chassis provided with four support arms on the ground, each of the arms support is articulated to the frame by a hinge device which comprises a substantially vertical axis of articulation, extending between a lower sheet or beam of the frame and a sheet or upper beam of the frame, the hinge axis passing through and from one side, on its height, the region of one end of the support arm. More particularly, this hinge pin passes through bores in the lower and upper plates of the frame, and in the region of the end of the support arm. Locking means in rotation of the hinge pin, with locking key, are provided in the upper part of the hinge axis, at the upper plate of the frame. This document serves as a basis for the preamble of claim 1.
  • the present invention aims to avoid the aforementioned drawbacks by providing for the support arms an improved articulation device, which guarantees in the working position a certain and permanent support of said arms against the frame, so as to ensure a perfect transmission of efforts between the arms and the chassis, thanks to a "recovery" of assembly games.
  • the positioning and traction means of the hinge pin comprise at least one traction screw, intended to be introduced through the corresponding hole of the locking positioning plate, and at least one tapped hole formed in the upper end of the hinge axis, the or each pulling screw being clamped in the corresponding tapped hole of the axis.
  • the idea underlying the invention is to achieve the articulation of each support arm on the frame, no longer by a single axis, but by means of a stepped axis, which can be pulled to the top, particularly by means of pulling screws, to bring the upper part of the arm and the upper plate of the frame.
  • Figure 1 shows a collapsible tower crane, which generally known comprises: a fixed frame 2 bearing on the ground 3; a rotating frame 4 mounted on the fixed frame 2 by means of an orientation device 5; a mast 6 articulated by its lower part on the rotating frame 4; a dispensing boom 7 hinged to the top of the mast 6; a retainer 8 of the boom 7.
  • the fixed frame 2 shown more particularly in Figure 2, comprises four support arms 9, deployable cross for the working position of the crane, and foldable against the frame 2 for transporting the crane.
  • the invention is more particularly concerned with the articulation device 10, shown in detail in FIGS. 3 and 4.
  • the fixed frame 2 comprises a lower horizontal plate 12 and an upper horizontal plate 13, of the same contour. These two superimposed plates 12 and 13 form four clevis configurations, on which the rear ends of the four support arms 9, respectively engaged between the lower plate 12 and the upper plate 13, are articulated respectively about vertical axes 14.
  • the lower plate 12 of the frame 2 comprises, in each screed portion, a bore 15 of diameter D.
  • the upper plate 13 of the frame 2 comprises, coaxially with this bore 15, another bore 16 more small diameter d.
  • the bottom plate 12 of the frame 2 is doubled by a reinforcing sheet 19, provided with a bore of the same diameter D.
  • a reinforcing sheet 20 integral with the upper sheet 13 of frame 2 in the region of its bore 16, the reinforcing sheet being provided with a bore of the same diameter d.
  • the hinge pin 14 of generally cylindrical shape, has in its lower portion an annular shoulder 21, which delimits a lower head 22 of this axis 14 of diameter D corresponding to the diameter of the bore 15 of the lower plate 12 of the chassis 2.
  • the diameter d of this axis 14 is constant, and corresponds to the diameter of the bores 17 and 18 of the arm 9 and the bore 16 of the upper plate 13 of the frame 2.
  • the hinge device 10 further comprises a positioning and locking plate 26 of the axis 14, the plate 26 having a disc shape extended by a radial lug.
  • the plate 26 In the plate 26 are formed two holes 27 whose spacing is equal to that of the two tapped holes 25 of the hinge pin 14.
  • the positioning and locking plate 26 takes support on the reinforcement plate 20 integral with the upper plate 13 of the frame 2.
  • Two tensioning screws 28 with brake are engaged from above through the respective holes 27 of the plate 26, and are respectively clamped in the two threaded holes 25 of the axis 14.
  • the arm 9 When assembling a support arm 9 with the fixed frame 2 of the tower crane, the arm 9 is engaged in one of the clevis portions of this frame 2, and is positioned so that that its bores 17 and 18 are aligned with the corresponding bores 15 and 16 of the frame 2.
  • the hinge axis 14 is introduced through the bore 15 of the bottom plate 12 of the frame 2, and successively engaged in the other bores 17 and 18 and finally 16, until its annular shoulder 21 comes to bear under the arm 9.
  • the lower head 22 of the shaft 14 is then housed in the bore 15 of corresponding diameter D of the bottom plate 12 of the frame 2, while the upper end 23 of the shaft 14 has reached the level of the upper plate 13 and its reinforcing plate 20.
  • the locking pin 30 of the positioning plate 26 is put in place, as well as this plate 26 itself, which thus bears on the reinforcing plate 20.
  • the traction screws 28 are placed in position and tightened in the corresponding threaded holes 25.
  • the hinge axis 14 is thus pulled upward, this pulling action being symbolized by an arrow T in FIG. 3.
  • the axis 14 carries with it upwardly the arm 9, via its shoulder. 21.
  • the arm 9 is thus brought closer to the upper plate 13 of the frame 2, the upper surface 31 of the arm 9 being brought against the lower surface 32 of the upper plate 13.
  • the tightening of the traction screws 28 is not continued until the arm 9 is locked, because it must be ensured that this arm 9 remains free to rotate, to be deployed or retracted.
  • Each support arm 9 thus has, finally, negligible vertical clearance, which guarantees a permanent position of support on the sheet metal upper 13 of the fixed frame 2 of the crane, for work, and therefore a perfect transmission of forces between the frame 2 and the support arms 9, and therefore between the structure of the crane and the ground 3.
  • reinforcing plates 19 and 20 increase the matting range of the hinge pin 14, in its lower and upper parts, and the reinforcing plate 20 provides a stiffening of the upper plate 13 of the frame 2, which is subjected to a bending moment during work.
  • the invention has been described above in the context of its application to a tower crane, with fixed frame 2 with articulated arms 9 of monobloc structure.
  • This invention is also applicable in the case of telescopic arms, in which case the device concerned is used for articulated mounting of the outer member of each telescopic arm.
  • the same articulation device also applies to all lifting gear or similar devices, provided with support arms on the ground for their stabilization in the working position, for example: mobile cranes, nacelles for personnel intervention at height, truck mounted cranes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP20030356151 2002-11-08 2003-10-14 Châssis avec des dispositifs d'articulation pour des bras d'appui Expired - Lifetime EP1418151B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0214034A FR2846955B1 (fr) 2002-11-08 2002-11-08 Dispositif d'articulation sur chassis pour bras d'appui au sol d'un engin
FR0214034 2002-11-08

Publications (3)

Publication Number Publication Date
EP1418151A1 EP1418151A1 (fr) 2004-05-12
EP1418151A8 EP1418151A8 (fr) 2004-08-04
EP1418151B1 true EP1418151B1 (fr) 2006-12-06

Family

ID=32104549

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030356151 Expired - Lifetime EP1418151B1 (fr) 2002-11-08 2003-10-14 Châssis avec des dispositifs d'articulation pour des bras d'appui

Country Status (4)

Country Link
EP (1) EP1418151B1 (es)
DE (1) DE60310177T2 (es)
ES (1) ES2277051T3 (es)
FR (1) FR2846955B1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3589802B1 (de) * 2017-03-02 2024-07-17 Putzmeister Engineering GmbH Tragstruktur mit integriertem kessel für eine mobile betonpumpe und mobile betonpumpe

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2906798B1 (fr) * 2006-10-06 2008-12-19 Potain Soc Par Actions Simplif Chassis avec bras d'appui au sol pour engin de levage
CN102786006A (zh) * 2011-05-20 2012-11-21 上海庞源机械租赁股份有限公司 一种超大轨距的行走塔式起重机行走底架结构
CN102556857A (zh) * 2011-12-12 2012-07-11 中联重科股份有限公司 桁架臂对接结构，具有其的桁架臂以及桁架臂起重机
CN103058079B (zh) * 2013-01-30 2014-08-13 徐州重型机械有限公司 一种铰接固定支腿及设有该支腿的起重机
DE102013205888A1 (de) * 2013-04-03 2014-10-09 Putzmeister Engineering Gmbh Fahrbare Arbeitsmaschine, insbesondere Autobetonpumpe und Herstellungsverfahren
DE102015226314A1 (de) * 2015-12-21 2017-06-22 Terex Global Gmbh Modularer Kran, Transporteinheit für einen modularen Kran und Verfahren zum Betreiben eines derartigen Krans
JP6801692B2 (ja) * 2018-05-23 2020-12-16 コベルコ建機株式会社 揺動接続構造及びクレーン

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR673782A (fr) * 1928-09-08 1930-01-20 App De Levage De Saint Quentin Système d'appui amovible pour l'augmentation temporaire de la stabilité de véhicules
DE1000981B (de) * 1955-12-22 1957-01-17 Krupp Ardelt Gmbh Abstuetzvorrichtung fuer Schwerlastfahrzeuge, insbesondere fahrbare Krane
US4394913A (en) * 1980-11-07 1983-07-26 Harnischfeger Corporation Crane having power operated outriggers and lock means therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3589802B1 (de) * 2017-03-02 2024-07-17 Putzmeister Engineering GmbH Tragstruktur mit integriertem kessel für eine mobile betonpumpe und mobile betonpumpe

Also Published As

Publication number Publication date
FR2846955B1 (fr) 2006-12-15
FR2846955A1 (fr) 2004-05-14
ES2277051T3 (es) 2007-07-01
DE60310177T2 (de) 2007-10-04
EP1418151A1 (fr) 2004-05-12
DE60310177D1 (de) 2007-01-18
EP1418151A8 (fr) 2004-08-04

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