EP0870725B1 - Dispositif d'échelles télescopiques et d'élément mobile guidé sur ces échelles, pour grue à tour - Google Patents
Dispositif d'échelles télescopiques et d'élément mobile guidé sur ces échelles, pour grue à tour Download PDFInfo
- 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
Links
Images
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.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control And Safety Of Cranes (AREA)
- Ladders (AREA)
- Jib Cranes (AREA)
Description
- l'élément d'échelle, associé à l'élément de mât inférieur et extérieur, est fixé à sa partie supérieure et à sa partie inférieure sur cet élément de mât, et possède deux montants de section carrée ou rectangulaire, reliés par des barreaux,
- l'élément d'échelle, associé à l'élément de mât supérieur et intérieur, est fixé à sa partie supérieure sur cet élément de mât, et possède deux montants de section carrée ou rectangulaire, reliés par des barreaux, la largueur de cet élément d'échelle étant égale à celle du précédent,
- l'élément d'échelle, associé à l'élément de mât intermédiaire, est fixé par sa partie supérieure sur cet élément de mât, et possède deux montants de profil crénelé, présentant en leur milieu une partie concave et, de part et d'autre de la partie médiane concave, deux parties convexes aptes à envelopper les montants correspondants des deux autres éléments d'échelle, les barreaux de cet élément d'échelle reliant les parties médianes concaves de ses deux montants, et la largeur de cet élément d'échelle étant égale à celle des deux autres éléments d'échelle,
- l'élément mobile, à guider sur l'échelle,
comprend un cadre de guidage composé lui-même :
- d'une charpente de section horizontale en forme de "U", entourant l'échelle sur sa face avant et sur ses faces latérales,
- de premiers rouleaux de guidage, d'axes horizontaux, situés en regard des faces latérales droite et gauche de l'échelle, et aptes à rouler le long des faces latérales droite et gauche des montants des éléments d'échelle associés aux éléments de mât extérieur et intérieur, et aussi le long des parties convexes enveloppantes de l'élément d'échelle associé à l'élément de mât intermédiaire,
- d'autres rouleaux de guidage, d'axes horizontaux orthogonaux aux axes des rouleaux précédents et répartis sur les côtés droit et gauche de l'échelle, et comprenant des rouleaux prenant place de part et d'autre des montants respectifs des trois éléments d'échelle, avec des rouleaux centraux trouvant passage dans la partie concave des montants de profil crénelé de l'élément d'échelle associé à l'élément de mât intermédiaire.
- deux grands rouleaux de guidage situés respectivement en regard des faces latérales droite et gauche de l'échelle, et
- six plus petits rouleaux de guidage, répartis en deux groupes de trois rouleaux situés respectivement sur les côtés droit et gauche de l'échelle, ces rouleaux enserrant deux à deux les montants des éléments d'échelle associés aux éléments de mât extérieur, intérieur et intermédiaire, le rouleau central de chaque groupe de trois rouleaux trouvant passage dans la partie concave du montant de profil crénelé de l'élément d'échelle associé à l'élément de mât intermédiaire.
- le long des faces latérales droite et gauche des montants 22 du premier élément d'échelle 14, et/ou
- le long des parties convexes 28 et 29 des montants 26 du deuxième élément d'échelle 15, et/ou
- le long des faces latérales droite et gauche des montants 24 du troisième élément d'échelle 16.
- Les montants 22 du premier élément d'échelle 14 sont enserrés, à droite, par la paire de rouleaux 37 et 38 et, à gauche, par la paire de rouleaux 40 et 41, chaque paire comprenant un rouleau extérieur et un rouleau central.
- Les montants 24 du troisième élément d'échelle 16 sont enserrés, à droite, par la paire de rouleaux 38 et 39 et, à gauche, par la paire de rouleaux 41 et 42, chaque paire comprenant un rouleau extérieur et un rouleau central.
- Les montants 26 du deuxième élément d'échelle 15 sont enserrés, à droite, par la paire de rouleaux 37 et 39 et, à gauche, par la paire de rouleaux 40 et 42, chaque paire comprenant les deux rouleaux extérieurs.
Claims (3)
- Dispositif d'échelles télescopiques et d'élément mobile guidé sur ces échelles, pour grue à tour à mâture télescopique en trois éléments équipée d'échelles télescopiques elles aussi en trois éléments, un élément d'échelle étant associé à chaque élément de mât de la grue à tour, caractérisé en ce que :l'élément d'échelle (14), associé à l'élément de mât inférieur et extérieur (10), est fixé à sa partie supérieure (en 18) et à sa partie inférieure (en 17) sur cet élément de mât (10), et possède deux montants (22) de section carrée ou rectangulaire, reliés par des barreaux (23),l'élément d'échelle (16), associé à l'élément de mât supérieur et intérieur (12), est fixé à sa partie supérieure (en 20) sur cet élément de mât (12), et possède deux montants (24) de section carrée ou rectangulaire, reliés par des barreaux (25), la largeur de cet élément d'échelle (16) étant égale à celle du précédent (14),l'élément d'échelle (15), associé à l'élément de mât intermédiaire (11), est fixé par sa partie supérieure (en 19) sur cet élément de mât (11), et possède deux montants (26) de profil crénelé, présentant en leur milieu une partie concave (27) et, de part et d'autre de la partie médiane concave (27), deux parties convexes (28,29) aptes à envelopper les montants (22,24) correspondants des deux autres éléments d'échelle (14,16), les barreaux (30) de cet élément d'échelle (15) reliant les parties médianes concaves (27) de ses deux montants (26), et la largeur de cet élément d'échelle (15) étant égale à celle des deux autres éléments d'échelle (14,16),l'élément mobile (21), à guider sur l'échelle (13), comprend un cadre de guidage (31) composé lui-même :d'une charpente (32) de section horizontale en forme de "U", entourant l'échelle (13) sur sa face avant et sur ses faces latérales,de premiers rouleaux de guidage (33,34), d'axes horizontaux (35,36), situés en regard des faces latérales droite et gauche de l'échelle (13), et aptes à rouler le long des faces latérales droite et gauche des montants (22,24) des éléments d'échelle (14,16) associés aux éléments de mât extérieur (10) et intérieur (12), et aussi le long des parties convexes enveloppantes (28,29) de l'élément d'échelle (15) associé à l'élément de mât intermédiaire (11),d'autres rouleaux de guidage (37 à 42), d'axes horizontaux orthogonaux aux axes (35,36) des rouleaux précédents (33,34) et répartis sur les côtés droit et gauche de l'échelle (13), et comprenant des rouleaux (37 à 42) prenant place de part et d'autre des montants respectifs (22,24,26) des trois éléments d'échelle (14,16,15), avec des rouleaux centraux (38,41) trouvant passage dans les parties concaves (27) des montants (26) de profil crénelé de l'élément d'échelle (15) associé à l'élément de mât intermédiaire (11).
- Dispositif selon la revendication 1, caractérisé en ce que les rouleaux de guidage appartenant au cadre de guidage (31) de l'élément mobile (21) comprennent deux ensembles de huit rouleaux de guidage (33,34,37 à 42), situés respectivement à la base et au sommet dudit cadre (31) et comprenant, chacun :deux grands rouleaux de guidage (33,34) situés respectivement en regard des faces latérales droite et gauche de l'échelle (13), etsix plus petits rouleaux de guidage (37 à 42), répartis en deux groupes de trois rouleaux (37,38,39;40,41,42) situés respectivement sur les côtés droit et gauche de l'échelle (13), ces rouleaux (37 à 42) enserrant deux à deux les montants (22,24,26) des éléments d'échelle (14,16,15) associés aux éléments de mât extérieur (10), intérieur (12) et intermédiaire (11), le rouleau central (38,41) de chaque groupe de trois rouleaux trouvant passage dans la partie concave (27) du montant (26) correspondant de l'élément de mât intermédiaire (11).
- Dispositif selon la revendication 1 ou 2, caractérisé en ce que l'élément mobile (21), guidé sur l'échelle (13), est une cabine de grue.
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 (fr) | 1998-10-14 |
EP0870725B1 true EP0870725B1 (fr) | 2002-07-17 |
Family
ID=9506008
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19980420045 Expired - Lifetime EP0870725B1 (fr) | 1997-04-11 | 1998-03-11 | Dispositif d'échelles télescopiques et d'élément mobile guidé sur ces échelles, pour grue à tour |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0870725B1 (fr) |
DE (1) | DE69806532T2 (fr) |
ES (1) | ES2179441T3 (fr) |
FR (1) | FR2761969B1 (fr) |
RU (1) | RU2193006C2 (fr) |
Cited By (1)
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)
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)
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 |
-
1997
- 1997-04-11 FR FR9704717A patent/FR2761969B1/fr not_active Expired - Fee Related
-
1998
- 1998-03-11 DE DE1998606532 patent/DE69806532T2/de not_active Expired - Lifetime
- 1998-03-11 ES ES98420045T patent/ES2179441T3/es not_active Expired - Lifetime
- 1998-03-11 EP EP19980420045 patent/EP0870725B1/fr not_active Expired - Lifetime
- 1998-04-10 RU RU98106853A patent/RU2193006C2/ru not_active IP Right Cessation
Cited By (1)
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 (fr) | 1998-10-14 |
FR2761969A1 (fr) | 1998-10-16 |
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