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EP0870725B1 - Teleskopische Leiter und bewegliches Element geführt auf diese Leiter für einen Turmkran - Google Patents

Teleskopische Leiter und bewegliches Element geführt auf diese Leiter für einen Turmkran Download PDF

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Publication number
EP0870725B1
EP0870725B1 EP19980420045 EP98420045A EP0870725B1 EP 0870725 B1 EP0870725 B1 EP 0870725B1 EP 19980420045 EP19980420045 EP 19980420045 EP 98420045 A EP98420045 A EP 98420045A EP 0870725 B1 EP0870725 B1 EP 0870725B1
Authority
EP
European Patent Office
Prior art keywords
ladder
tower
rollers
uprights
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
EP19980420045
Other languages
English (en)
French (fr)
Other versions
EP0870725A1 (de
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 EP0870725A1 publication Critical patent/EP0870725A1/de
Application granted granted Critical
Publication of EP0870725B1 publication Critical patent/EP0870725B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/04—Ladders for resting against objects, e.g. walls poles, trees
    • E06C1/08—Ladders for resting against objects, e.g. walls poles, trees multi-part
    • E06C1/12—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic
    • 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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/12—Lifts or other hoisting devices on ladders

Definitions

  • the present invention relates, in general, the area of tower cranes and it relates plus in particular, to a device combining scales telescopic and a mobile element guided on these ladders, for a tower crane with telescopic mast in three elements fitted with telescopic ladders also three elements, one scale element being associated with each tower element of the tower crane.
  • mobile element is meant here any element transport can be moved and guided vertically, on the height of the mast totally or partially deployed crane, for example: crane cabin, freight elevator, personal lift, protective carrycot for crane operator.
  • this document describes a crane with mast telescopic in two parts, fitted with a ladder also telescopic and made in two parts principal, associated respectively with the two elements of mast; the upper ladder element has uprights rectangular profile, and the lower ladder element has U-shaped profile uprights that surround the amounts of the top element on three of their four faces.
  • On this ladder is mounted rolling a chassis mobile, with four rollers and four guide rollers, the latter having a groove "V" profile, said movable chassis being secured to the cabin.
  • the telescopic ladder includes, in addition to its two main elements, a weak "slide” element length, which has a profile corresponding to that of the lower ladder element, but which is mounted sliding on the upper ladder element.
  • the sliding element of the scale may stuck when moving, due to friction important, this element having no pebble rolling.
  • a simple device of stops ensures the drive link between the mobile chassis and said slide element, while a locking system would at the very least be necessary, for security reasons, especially to avoid that during the descent of the cabin the movable frame is no longer guided if the element slide gets stuck, which could even cause falling from the cabin.
  • Swiss patent 665825 is complex, unreliable and insecure, even very dangerous, while being limited, in its application, to a crane with two-part telescopic mast.
  • the document considered does not provide any solution applicable to a telescopic mast in three elements.
  • German patent application 3721673 which relates a device associated with a tower crane cabin, and allowing the cabin to be moved vertically along the crane mast.
  • the device rolls directly on the mast structure, and therefore requires a section constant horizontal of the mast, over its entire height; thus, such a device is not directly applicable to a telescopic mast crane, the elements of which have different horizontal sections from each other.
  • this device is provided with means of rotation of the cabin, and it therefore preferably applies to "turning from the top" type cranes.
  • the present invention aims to remedy the whole of these disadvantages, by providing a device telescopic ladder and mobile element guided on these ladders, specially designed for telescopic masts in three elements, the sections of which can be different, the proposed device ensuring permanently suitable guidance in the front, rear directions, right and left, as well as the resumption of the efforts due to the remote load, also ensuring a passage without discontinuity from one scale element to the next, in order to create a reliable and suitable device overall, ensuring perfectly safe guidance, while retaining a relatively simple and compact structure.
  • the telescopic ladder thus consists of two classic elements, and a more specific element, including the uprights have a particular profile ensuring, by its enveloping convex parts, a connection sliding with the two previous elements and, by its concave middle part, the passage of at least one roller guide belonging to the movable element to be guided along of the scale.
  • the fasteners of the three ladder elements on the corresponding mast elements allow deploy and retract the ladder without encountering obstacle.
  • the profile chosen for the three elements of ladders makes it possible to obtain a minimum bulk of the scales when retracted, therefore to satisfy the road gauge requirements for the transportation of crane, and this profile also achieves a "natural" structure guide, in four directions forming between them 90 ° angles, for the guide frame which supports a means of transport such as a crane cabin.
  • this frame guidance of the movable element ensures guidance in perfect security, due to the fact that during its passage on each of the three scale elements there is always rollers which enclose the uprights of the element of scale concerned. Arranged in two directions perpendicular, these rollers provide lateral guidance and forward-backward guidance, as well as resumption of lateral and / or front-rear efforts due to load supported by said guide frame.
  • the configuration proposed by the invention also ensures, in the vertical direction, a guiding continuity when passing from one scale element to the next.
  • FIG. 1 a tower crane, which includes a fixed base frame 1 on which is mounted rotating, around a vertical axis 2, another chassis 3 which carries a counterweight 4 at the rear and the front of which is mounted, along a horizontal axis 5, a telescopic mast 6.
  • the crane has a boom dispenser 7 (shown only partially), climb to the top of the mast 6.
  • Guy lines 8 connect the rotating frame 3 and mast 6, while a device rear retainer 9 connects the boom 7 to the rotating chassis 3.
  • the telescopic mast 6 consists of an element outer and lower 10, of an intermediate element 11 and an inner and upper element 12.
  • Each element mast 10, 11 or 12 for example has a square section or polygonal.
  • the telescopic mast 6 is equipped with a ladder 13, also telescopic, which consists of three elements of scale 14, 15 and 16, respectively associated with the three mast elements 10, 11 and 12.
  • the telescopic ladder 13 is shown, in the partially deployed position, on the figure 2.
  • the first scale element 14, associated with the external mast element 10, is fixed to this element of external mast 10 at a lower fixing point 17 and at an upper fixing point 18.
  • the second scale element 15, associated with the intermediate mast element 11 is fixed to this intermediate mast element 11 only at one point upper attachment 19.
  • the third element of scale 16, associated with the inner mast element 12 is attached to this inner mast member 12 only in one upper attachment point 20.
  • the telescopic ladder 13 is used to guide a element movable vertically along the mast 6, this element mobile being the crane cabin 21 in the example illustrated to the drawing.
  • the scale elements 14, 15 and 16 have relative configurations and positions shown in Figures 3 and 4.
  • the first ladder element 14 has two uprights 22 of square profile, connected by bars 23.
  • the third ladder element 16 also has two uprights 24 of square profile, connected by bars 25. These two scale elements 14 and 16 are the same width, so their respective amounts 22 and 24 come opposite, in the retracted position of the ladder 13.
  • the second ladder element 15 has a more specific configuration, clearly visible on the Figure 4.
  • This ladder element 15 has two uprights 26 of crenellated profile, which can be described as comprising a concave middle part 27, located between two parts convex 28 and 29.
  • the bars 30 of this element of scale 15 connect the concave middle parts 27 of its two uprights 26.
  • the width of this second element of scale 15 is equal to that of the first and third scale elements 14 and 16.
  • the second ladder element 15 takes place between the first element of scale 14 and the third element scale 16.
  • the convex portions 28 of the uprights 26 of the second ladder element 15 surround the corresponding 22 uprights of the first ladder element 14.
  • the other convex parts 29 of the uprights 26 of the second ladder element 15 surround the corresponding 24 uprights of the third scale element 16.
  • the crane cabin 21 is supported by a guide frame 31, located behind this cabin 21 and on one side thereof.
  • the framework of guide 31 includes a frame 32 made of tubes, which extends vertically over the height of the cabin 21 and which has a horizontal section in the shape of a "U”, surrounding the ladder 13 on its front face and on its two side faces.
  • the frame 32 of the guide frame 31 supports two identical sets of guide rollers, located respectively at the base and at the top of this frame 31, and each comprising eight guide rollers.
  • Figure 3 clearly represents the arrangement of these eight rolls, for one of the two sets of guide rollers.
  • the two central rollers 38 and 41 find passage in the concave middle portions 27 of two uprights 26 of the second ladder element 15.
  • the movable element guided on the ladder 13 still includes a platform 43 access to the cabin 21, the platform 43 comprising a hatch and lying next to scale 13, as well that opposite door 44 of cabin 21.
  • the frame 31, support of the cabin 21, can be hoisted or descended along ladder 13 by any means suitable elevation, such as rope, rope or cable, generally driven by a winch itself operated by a engine or manually.
  • These lifting means include in themselves the securities intended to prevent the fall of the frame 31, therefore of the movable element 21 such as a cabin crane, in the event of a breakdown of the driving energy.
  • Figure 1 shows several positions, namely a position lower, an intermediate position and a position in which the cabin 21 can be brought.
  • the two sets of eight rollers 33, 34, 37 to 42 of the guide frame 31 allow guiding in perfect security, when moving cabin 21, fact that for each scale element 14, 15 or 16, these rollers enclose the uprights 22, 24 or 26, the operation possible with telescopic mast 6 fully or partially deployed.
  • the device ensures the recovery of efforts due to a load offset from scale 13, which is the case here for cabin 21, offset both laterally and to the front with respect to scale 13.
  • the mobile element any configuration, other than that of a cabin, and assigning it all function: transport of people, transport of material, protection of personnel.
  • the telescopic ladders can be mounted, indifferently, outside or inside the mature.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control And Safety Of Cranes (AREA)
  • Ladders (AREA)
  • Jib Cranes (AREA)

Claims (3)

  1. Vorrichtung aus Teleskop-Leitern und einem beweglichen Element, das auf diesen Leitern geführt ist, für einen Turmdrehkran mit dreigliedrigem Teleskop-Mast, der mit ebenfalls dreigliedrigen Teleskop-Leitern ausgestattet ist, wobei ein Leiterelement jeweils einem Mastelement des Turmdrehkrans zugeordnet ist, dadurch gekennzeichnet, dass:
    das Leiterelement (14), das dem unteren, äußeren Mastelement (10) zugeordnet ist, an seinem oberen Teil (bei 18) und an seinem unteren Teil (bei 17) an diesem Mastelement (10) befestigt ist, und dass es zwei Holme (22) mit quadratischem oder rechteckigem Querschnitt besitzt, die durch Stäbe (23) verbunden sind,
    das Leiterelement (16), das dem oberen, inneren Mastelement (12) zugeordnet ist, an seinem oberen Teil (bei 20) an diesem Mastelement (12) befestigt ist, und dass es zwei Holme (24) mit quadratischem oder rechteckigem Querschnitt besitzt, die durch Stäbe (25) verbunden sind, wobei dieses Leiterelement (16) die gleiche Breite hat wie das vorhergehende Leiterelement (14),
    das Leiterelement (15), das dem mittleren Mastelement (11) zugeordnet ist, an seinem oberen Teil (bei 19) auf diesem Mastelement (11) befestigt ist, und dass es zwei Holme (26) mit Rippenprofil besitzt, die in ihrer Mitte einen konkaven Bereich (27) und, zu beiden Seiten des konkaven Mittelbereichs (27), zwei konvexe Bereiche (28, 29) aufweisen, die geeignet sind, die entsprechenden Holme (22, 24) der zwei anderen Leiterelemente (14, 16) zu umfassen, wobei die Stäbe (30) dieses Leiterelements (15) die konkaven Mittelbereiche (27) ihrer zwei Holme (26) verbinden, und dass dieses Leiterelement (15) die gleiche Breite hat wie die zwei anderen Leiterelemente (14, 16),
    das bewegliche Element (21), das auf der Leiter (13) zu führen ist, einen Führungsrahmen (31) umfasst, der seinerseits besteht aus:
    einem Traggerüst (32) mit horizontalem Querschnitt in "U"-Form, das die Leiter (13) an ihrer Vorderseite und an ihren Seitenflächen umgibt,
    ersten Führungsrollen (33, 34) mit horizontalen Achsen (35, 36), die der rechten und der linken Seitenfläche der Leiter (13) zugewandt angeordnet und geeignet sind, entlang der rechten und der linken Seitenfläche der Holme (22, 24) der Leiterelemente (14, 16) zu rollen, die dem äußeren (10) und dem inneren (12) Mastelement zugeordnet sind, und auch entlang der umgebenden konvexen Bereiche (28, 29) des Leiterelements (15), das dem mittleren Mastelement (11) zugeordnet ist,
    weiteren Führungsrollen (37 bis 42) mit horizontalen Achsen, die zu den Achsen (35, 36) der vorgenannten Rollen (33, 34) senkrecht stehen, und die auf der rechten und der linken Seite der Leiter (13) angeordnet sind, und die Rollen (37 bis 42) umfassen, die sich jeweils an der Seite der betreffenden Holme (22, 24, 26) der drei Leiterelemente (14, 16, 15) befinden, mit zentralen Rollen (38, 41), die die konkaven Bereiche (27) der Holme (26) mit Rippenprofil des Leiterelements (15) durchlaufen, das dem mittleren Mast-element (11) zugeordnet ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Führungsrollen, die zum Führungsrahmen (31) des beweglichen Elements (21) gehören, zwei Gruppen mit je acht Führungsrollen (33, 34, 37 bis 42) umfassen, die sich jeweils an der Basis und an der Spitze dieses Rahmens (31) befinden, und wobei jede umfasst:
    zwei große Führungsrollen (33, 34), die jeweils der rechten und der linken Seitenfläche der Leiter (13) zugewandt angeordnet sind, und
    sechs kleinere Führungsrollen (37 bis 42), die in zwei Gruppen zu drei Rollen (37, 38, 39; 40, 41, 42) aufgeteilt sind, die jeweils auf der rechten und der linken Seite der Leiter (13) angeordnet sind, wobei diese Rollen (37 bis 42) je zwei und zwei die Holme (22, 24, 26) der Leiterelemente (14, 16, 15) einschließen, die dem äußeren (10), dem inneren (12) und dem mittleren (11) Mast-Element zugeordnet sind, wobei die zentrale Rolle (38, 41) jeder Gruppe aus drei Rollen im konkaven Bereich (27) des entsprechenden Holms (26) des mittleren Mastelements (11) läuft,
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das bewegliche Element (21), das auf der Leiter (13) geführt ist, eine Krankabine ist.
EP19980420045 1997-04-11 1998-03-11 Teleskopische Leiter und bewegliches Element geführt auf diese Leiter für einen Turmkran Expired - Lifetime EP0870725B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9704717A FR2761969B1 (fr) 1997-04-11 1997-04-11 Dispositif d'echelles telescopiques et d'element mobile guide sur ces echelles, pour grue a tour
FR9704717 1997-04-11

Publications (2)

Publication Number Publication Date
EP0870725A1 EP0870725A1 (de) 1998-10-14
EP0870725B1 true EP0870725B1 (de) 2002-07-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980420045 Expired - Lifetime EP0870725B1 (de) 1997-04-11 1998-03-11 Teleskopische Leiter und bewegliches Element geführt auf diese Leiter für einen Turmkran

Country Status (5)

Country Link
EP (1) EP0870725B1 (de)
DE (1) DE69806532T2 (de)
ES (1) ES2179441T3 (de)
FR (1) FR2761969B1 (de)
RU (1) RU2193006C2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013103595A1 (de) * 2013-04-10 2014-10-16 Technomed GmbH Reha-Technik Lastentransportmittel

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003146581A (ja) * 2001-11-15 2003-05-21 Mitsubishi Heavy Ind Ltd クレーン及びクレーンの運転方法
FR2839055B1 (fr) * 2002-04-25 2004-10-29 Potain Sa Unite cabine-pivot repliable pour grue a tour
DE10350218A1 (de) * 2003-10-27 2005-06-02 Noell Mobile Systems & Cranes Gmbh Arbeitsbühne zur Beförderung von Personen
US11964850B2 (en) * 2019-03-20 2024-04-23 Liebherr-Werk Biberach Gmbh Crane
DE102020118141A1 (de) * 2020-07-09 2022-01-13 Liebherr-Werk Biberach Gmbh Fundamentkreuz für einen Turmkran sowie Turmkran
CN116986501A (zh) * 2023-07-28 2023-11-03 中国长江三峡集团有限公司 一种塔吊爬梯装置及其使用方法、安装方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE515824C (de) * 1927-08-03 1931-01-13 C D Magirus Akt Ges Aufricht- und ausziehbare Feuerwehrleiter mit Fahrstuhl
US3237719A (en) * 1962-01-05 1966-03-01 Donald Marsh Power lift for ladders
CH665825A5 (en) * 1985-02-06 1988-06-15 Emil Huggler Ag Crane with height adjustable driver's cab - with adjustment achieved by crane's own lifting mechanism
SE457168B (sv) * 1985-12-03 1988-12-05 Leif Uno Aake Loftmyr Anordning vid arbetshytter foer kranar
DE3816105A1 (de) * 1988-05-11 1990-01-11 Boecker Albert Gmbh & Co Kg Aus mehreren teleskopschuessen gebildeter schraegaufzug

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013103595A1 (de) * 2013-04-10 2014-10-16 Technomed GmbH Reha-Technik Lastentransportmittel

Also Published As

Publication number Publication date
DE69806532D1 (de) 2002-08-22
DE69806532T2 (de) 2003-01-30
FR2761969B1 (fr) 1999-05-28
RU2193006C2 (ru) 2002-11-20
ES2179441T3 (es) 2003-01-16
EP0870725A1 (de) 1998-10-14
FR2761969A1 (fr) 1998-10-16

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