EP0175052A1 - Grue à tour pivotante - Google Patents

Grue à tour pivotante Download PDF

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Publication number
EP0175052A1
EP0175052A1 EP85105441A EP85105441A EP0175052A1 EP 0175052 A1 EP0175052 A1 EP 0175052A1 EP 85105441 A EP85105441 A EP 85105441A EP 85105441 A EP85105441 A EP 85105441A EP 0175052 A1 EP0175052 A1 EP 0175052A1
Authority
EP
European Patent Office
Prior art keywords
cab
tower
tower crane
ladder
crane according
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Withdrawn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
EP85105441A
Other languages
German (de)
English (en)
Inventor
Johann Woisetschläger
Horst Zerza
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.)
Liebherr Werk Bischofshofen GmbH
Original Assignee
Liebherr Werk Bischofshofen GmbH
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 Liebherr Werk Bischofshofen GmbH filed Critical Liebherr Werk Bischofshofen GmbH
Publication of EP0175052A1 publication Critical patent/EP0175052A1/fr
Withdrawn legal-status Critical Current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
    • B66C13/00—Other constructional features or details
    • B66C13/52—Details of compartments for driving engines or motors or of operator's stands or cabins
    • B66C13/54—Operator's stands or cabins

Definitions

  • the invention relates to a tower crane with a telescopic tower supported on an undercarriage or portal, provided with a rotating device, at the upper end of which a boom held by guy ropes, in which a trolley runs, is articulated and which has a driver's cab below the boom and which is provided with a ladder leading to it.
  • tower cranes The economic viability of tower cranes is also largely determined by how quickly and with what effort they can be moved from one location to another, by what means and with what amount of time they take to be dismantled, transported on the road and erected again at a new location to let.
  • the manufacturers strive to design them in such a way that this work can be carried out without additional equipment, for example without additional cranes or lifting equipment.
  • the driver's cab can be arranged in an integral manner within the cross-section of the tower, this is not possible with smaller tower cranes because of the too small tower cross-section, so that the driver's cab is attached to the tower at a suitable point and connected to it got to.
  • the subsequent attachment of the driver's cab on the tower is difficult and can be accomplished in a simple manner only with an additional lifting device, the requirement of which is to be avoided.
  • the cab can either be attached to the upper end of the outer mast connected to the undercarriage or portal or to the upper end of the telescopic inner mast.
  • the driver's cab it is not possible to arrange the driver's cab at other locations on the telescopic mast.
  • a special hoist is required to move the cab between the two possible positions.
  • the object of the invention is to provide a tower crane of the type specified, on the tower of which the cab fasten with simple means at any height and can be moved to any place without special lifting equipment even after assembly.
  • this object is achieved in that the spars of the ladder attached to an outside of the tower form the guide rails for pairs of guide shoes arranged in pairs in the upper and lower region of the driver's cab, which overlap the spars from the outside in a U-shape, and in that Tower-facing wall of the cab is arranged at least one pivotable or extendable and secured in its pivoted position by a stop pawl, which is supported in its pivoted position for locking the cab in the desired height on a rung of the ladder.
  • the driver's cab is guided in the manner of an elevator on the rails of the ladder which form the guide rails, so that the driver's cab can be attached to the crane hook of the trolley moved up to the tower and can be moved to any point on the tower where it is on a rung through the Jack or any other fastener can be set.
  • the cab can remain connected to the outer tower, so that no special assembly of the cab is required and this can be moved to the desired height after erecting and telescoping the tower and locked there on the tower.
  • Each guide shoe is expediently provided with three rollers running on the web and the legs of each spar consisting of a U-profile.
  • the pawl is acted upon by a spring in the direction of its pivoted-out position.
  • This configuration makes it possible to pull up the driver's cab by the crane hook, the latch being able to drive over the rungs by pushing them in and, after driving over each rung, snaps back into their pivoted-out locking position.
  • the spring consisting of a tension spring can be relocated in such a way that the latch is acted on in the direction of its pivoted-in position. If the cab is raised over a short distance to lower it, the spring pulls the pawl into its ineffective position so that the cab can be lowered.
  • this can be provided with a swing-out arm, the free end of which has an eyelet or a pin held in aligned bores in the form of a pin, in which a rope which can be suspended in the load hook of the trolley can be fixed.
  • the spars expediently consist of telescoping U-profiles.
  • back protection brackets which are connected to one another and to the cab by means of ropes or belts are freely displaceably guided on the spars below the cab. These back guards can be bundled together before pulling up the cab, so that they are pulled off the bundle one after the other when the cab is raised.
  • the back protection bars are expediently provided at their ends with mutually directed U-shaped profiled shoes.
  • the bottom back guard bar is provided with at least two eyelets, via which it can be coupled to the floor or base frame of the driver's cab by means of ropes.
  • the entire bundle of the back protection bars is expediently raised over a certain distance with the driver's cab and then the bottom back guard bar is locked on the spars before the belts or ropes are loosened, so that the lower back guard bars are still bundled when the cab is not in its uppermost position lie on top of each other and do not hinder the crane operator from climbing.
  • FIG. 1 For reasons of the simplified illustration, only the telescoped tower with the telescoping ladder attached to it and the driver's cab moved and locked into its uppermost position is shown in FIG. 1 on a smaller scale than the other figures.
  • the tower consists of the lower outer tower section 1 attached to the undercarriage, not shown, and the telescopic upper tower section 2.
  • the tower 1, 2 On the front side shown, the tower 1, 2 is level if telescopic ladder 3 is attached.
  • the cab 6 On the spars 4, 5 of the ladder 3, the cab 6 is slidably guided, which is locked in the upper position shown on a rung 7 of the ladder 3.
  • a side wall of the driver's cab 6 is provided with guide shoes guided on the spars 4, 5 of the ladder 3, so that the driver's cab 6 is guided laterally on the tower 1, 2 and can be fastened to it.
  • the spars 4, 5 of the ladder 3 are connected by connecting pieces 8 to the jacket of the lower tower section 1, which, like the upper tower section 2, consists of a closed box section.
  • the spars 4, 5 of the ladder attached to the lower tower section 1 consist of U-profiles, the legs of which are directed towards one another, while the spars 4 ', 5' which are telescopically guided in the spars 4, 5 are those with the telescopic upper tower section 2 connected conductors consist of box profiles, which are welded together by the rungs 7 ', which are connected to the central regions of the mutually facing sides of the box profiles.
  • the rungs 7 of the lower ladder section are welded to the outer legs of the spars 4, 5 in the manner shown.
  • the spars 4, 5 and 4 ', 5' form the guide rails for the guide shoes 9 of the cab 6.
  • the guide shoes 9 are fastened in pairs on the rear side wall of the cab 6 in horizontal planes. In Fig. 4 only part of the base frame 10 of the cab 6 is shown.
  • the guide shoes 9 are attached to this base frame on opposite sides. These consist of a spar 4, 5 and 4 ', 5' from the outside approximately U-shaped support frame 11 in which three rollers are mounted.
  • Two casters 12, 13 are mounted about mutually parallel horizontal axes in such a way that they run on the legs of the U-profiles forming the bars 4, 5 or on the corresponding opposite sides of the box profiles forming the bars 4 ', 5'.
  • the third roller 14 is mounted on a horizontal axis perpendicular to the axes of the rollers 12, 13 and runs, as can be seen from FIG. 3, on the outer web parts of the bars 4, 5 or on the outer sides of the bars 4 '. , 5 '.
  • corresponding carriage-shaped guide shoes are fastened with rollers 12 to 14, so that the driver's cab 6 can be moved on the ladder bars 4, 5, 4 ', 5' without tilting, but is otherwise held to prevent tipping.
  • the approximately triangular pawl 17 is pivotally mounted on a pin 18 which is held in a fork-shaped bearing block 15 which is welded to the side member 16 of the upper frame of the cab 6.
  • the triangular pawl 17 engages in its shown pivoted position through a slot-like recess in the rear wall, so that it can be supported in the manner shown on a rung 7 of the ladder 3.
  • the pawl 17 is welded to a flat iron piece 19 which forms a second lever arm, as it were, and which stands on the pawl 17 at right angles.
  • the right narrow side 20 of the flat iron piece 19 thus forms a stop surface which is supported in the pivoted-out position of the pawl 17 on a reinforced part of the side wall 21 of the cab 6.
  • a tension spring 22 is attached, the other End is hooked into the hook 23, which is located below the pawl 17 on the side wall of the cab 6. The spring 22 thus endeavors to hold the pawl 17 in the pivoted-out position shown.
  • the spring 22 is repositioned by 90 3 so that it tries to pivot the pawl 17 into its unlocked position. If after changing the spring 22 the cab 6 is raised so far that the pawl 17 is released from the rung 7, the pawl 17 swivels inwards and the cab 6 can be lowered and raised as desired.
  • back protection brackets usually consist of brackets rigidly connected to the tower or the ladder, the assembly of which is cumbersome or which take up additional space during road transport.
  • the back protection brackets 25 are provided at their ends with U-shaped slide shoes 26 which overlap the spars 4, 5, 4 ', 5' of the ladder 3 such that they are displaceably guided on them.
  • the arched back protection brackets are connected in their apex areas and in their inner areas close to the guide shoes 26 in the manner shown in FIG. 6 by straps 27.
  • the upper ends of the straps 27 are attached to the floor or base frame 10 of the cab 6. Between two successive back protection brackets 25, the belts 27 have the same section lengths.
  • the lower back protection bar 25 is provided in the manner shown in FIG. 2 with three eyelets 28, in which cables 29 are suspended, the other ends of which are suspended in the manner in corresponding eyes 30 which are fastened to the floor or base frame 10 of the cab 6 are that the back guards are held in a stacked form below the cab 6.
  • the driver's cab 6 is raised so high by the crane hook that the lowermost back protection bar 25 of the back protection bar lying one above the other in the stack is in the manner shown in FIG. 2 at the point at which, for safety reasons, the ladder 3 lowest back protection bar must be arranged.
  • the lowermost back protection bar 25 is fixed on the bars 4, 5, for example by inserted bolts.
  • the tethers 29 are loosened, so that when the cab is raised, the straps 27 tighten in sections and, after their tightening, each pull a back protection bar 25 from the stack 31.
  • the back protection bar 25 are thus held securely in position by their guide shoes 26 and the belts 27.
  • the straps 27 have the same section lengths between the back protection brackets 25.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Control And Safety Of Cranes (AREA)
EP85105441A 1984-09-12 1985-05-03 Grue à tour pivotante Withdrawn EP0175052A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3433537 1984-09-12
DE19843433537 DE3433537A1 (de) 1984-09-12 1984-09-12 Turmdrehkran

Publications (1)

Publication Number Publication Date
EP0175052A1 true EP0175052A1 (fr) 1986-03-26

Family

ID=6245245

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85105441A Withdrawn EP0175052A1 (fr) 1984-09-12 1985-05-03 Grue à tour pivotante

Country Status (2)

Country Link
EP (1) EP0175052A1 (fr)
DE (1) DE3433537A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2747380A1 (fr) * 1996-04-16 1997-10-17 Potain Sa Procede et dispositif pour l'acces securise a un poste de conduite eleve, notamment sur une grue a tour
EP2639193A1 (fr) 2012-03-15 2013-09-18 Manitowoc Crane Group France Dispositif d'accès en hauteur pour grue à tour
WO2023142506A1 (fr) * 2022-01-28 2023-08-03 湖南三一塔式起重机械有限公司 Système de rotation et grue à tour

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE457168B (sv) * 1985-12-03 1988-12-05 Leif Uno Aake Loftmyr Anordning vid arbetshytter foer kranar

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US976240A (en) * 1909-01-27 1910-11-22 John L Winkler Life-saving apparatus.
US2338833A (en) * 1942-09-23 1944-01-11 Bailey Vivian Pinnock Fire rescue device
US3080981A (en) * 1961-06-06 1963-03-12 Schwermaschb Kirow Veb Tower-crane cabin
DE2307355A1 (de) * 1972-02-16 1973-08-30 Potain Sa Liftvorrichtung fuer den fuehrerstand eines krans in fachwerkausfuehrung
DE2905758A1 (de) * 1979-02-15 1980-08-28 Orenstein & Koppel Ag Fahrstuhl fuer fuehrerhaeuser von foerdergeraeten wie bagger, krane, bauaufzuege, bergbauaufzuege o.dgl.
DE3124303A1 (de) * 1980-06-23 1982-05-27 Manitou B.F. S.A., 44150 Ancenis, Loire-Atlantique Ausziehbarer teleskopkran mit kranfuehrerhaus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US976240A (en) * 1909-01-27 1910-11-22 John L Winkler Life-saving apparatus.
US2338833A (en) * 1942-09-23 1944-01-11 Bailey Vivian Pinnock Fire rescue device
US3080981A (en) * 1961-06-06 1963-03-12 Schwermaschb Kirow Veb Tower-crane cabin
DE2307355A1 (de) * 1972-02-16 1973-08-30 Potain Sa Liftvorrichtung fuer den fuehrerstand eines krans in fachwerkausfuehrung
DE2905758A1 (de) * 1979-02-15 1980-08-28 Orenstein & Koppel Ag Fahrstuhl fuer fuehrerhaeuser von foerdergeraeten wie bagger, krane, bauaufzuege, bergbauaufzuege o.dgl.
DE3124303A1 (de) * 1980-06-23 1982-05-27 Manitou B.F. S.A., 44150 Ancenis, Loire-Atlantique Ausziehbarer teleskopkran mit kranfuehrerhaus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2747380A1 (fr) * 1996-04-16 1997-10-17 Potain Sa Procede et dispositif pour l'acces securise a un poste de conduite eleve, notamment sur une grue a tour
EP0803466A1 (fr) * 1996-04-16 1997-10-29 Potain Procédé et dispositif pour l'accés sécurisé à un poste de conduite élevé, notamment sur une grue à tour
EP2639193A1 (fr) 2012-03-15 2013-09-18 Manitowoc Crane Group France Dispositif d'accès en hauteur pour grue à tour
US9382099B2 (en) 2012-03-15 2016-07-05 Manitowoc Crane Group France Sas Motorized height access device for tower cranes
WO2023142506A1 (fr) * 2022-01-28 2023-08-03 湖南三一塔式起重机械有限公司 Système de rotation et grue à tour

Also Published As

Publication number Publication date
DE3433537A1 (de) 1986-04-17

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Inventor name: WOISETSCHLAEGER, JOHANN