EP2677095A2 - Access system for overhanging or convex curved walls - Google Patents

Access system for overhanging or convex curved walls Download PDF

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Publication number
EP2677095A2
EP2677095A2 EP13172344.7A EP13172344A EP2677095A2 EP 2677095 A2 EP2677095 A2 EP 2677095A2 EP 13172344 A EP13172344 A EP 13172344A EP 2677095 A2 EP2677095 A2 EP 2677095A2
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EP
European Patent Office
Prior art keywords
boom
ballast weights
arms
platform
ballast
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.)
Granted
Application number
EP13172344.7A
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German (de)
French (fr)
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EP2677095A3 (en
EP2677095B1 (en
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Gesta Gesellschaft fur Stahlrohrgerueste mbH
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Gesta Gesellschaft fur Stahlrohrgerueste mbH
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Publication of EP2677095A2 publication Critical patent/EP2677095A2/en
Publication of EP2677095A3 publication Critical patent/EP2677095A3/en
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Publication of EP2677095B1 publication Critical patent/EP2677095B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
    • E04G3/30—Mobile scaffolds; Scaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables
    • E04G3/305—Mobile scaffolds; Scaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables specially adapted for tanks, silos or similar vessels
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
    • E04G3/243—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons following the outside contour of a building
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
    • E04G3/30—Mobile scaffolds; Scaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables
    • E04G3/32—Hoisting devices; Safety devices
    • E04G3/325—Safety devices for stabilising the mobile platform, e.g. to avoid it swinging in the wind
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
    • E04G3/34—Mobile scaffolds; Scaffolds with mobile platforms characterised by supporting structures provided on the roofs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
    • E04G2003/283—Mobile scaffolds; Scaffolds with mobile platforms mobile horizontally
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
    • E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
    • E04G2003/286—Mobile scaffolds; Scaffolds with mobile platforms mobile vertically

Definitions

  • Access systems of the type described above are known in various embodiments and are used in practice, for example, to carry out repair and renovation work on cooling towers of power plants and in particular of fossil power plants.
  • Such cooling towers are needed in power plants to cool the water vapor generated and thus supply the recooling operation again.
  • the cooling towers also serve to divert previously cleaned, ie desulphurized and de-stoked flue gases to the environment. These aggressive media must be absorbed by the concrete shell of the cooling tower without damage. Due to the constant exposure to flue gases and / or water vapor, the concrete shell is exposed to a certain amount of wear, so that maintenance and coating work is required.
  • the working platform of the indoor vehicle is braced by tensioning cables with an undercarriage, which is movably held along rails at the bottom of the cooling tower.
  • the working platform of the outdoor vehicle is movably guided at a defined distance from the wall of the cooling tower or the like.
  • the work platform is supported by running elements in the form of wheels or freely rotatable rollers on the wall.
  • a boom is mounted on the platform, which protrudes from the working platform in the direction away from the wall and carries at its free end ballast weights.
  • the boom possesses two cantilever arms each supported at one end portion thereof on both sides of the work platform and projecting therefrom in parallel therefrom, the free ends of the two cantilever arms being connected together by a base support to form a U-shaped cantilever.
  • the free end of the boom is connected via two support cables, which are fixed in the region of the free ends of the boom arms, connected to the superstructure. Furthermore, winches are provided to shorten the length of the support ropes and thus to pivot the boom upwards or conversely to increase the length of the pull ropes and thus lower the boom arm.
  • winches are provided to shorten the length of the support ropes and thus to pivot the boom upwards or conversely to increase the length of the pull ropes and thus lower the boom arm.
  • the highest contact pressure is exerted on the working platform.
  • the horizontal forces exerted by the support ropes on the superstructure when the boom is oriented horizontally become too high. The same applies to the forces acting on the support cables.
  • the boom is pivoted downwards by extending the support ropes over the winches when the platform is near the top of the wall.
  • this lowering can also lead to problems, since too unfavorably downwardly pivoted boom static unfavorable conditions may occur, which cause the platform is pivoted outwardly from the cooling tower wall or folds down.
  • Object of the present invention is therefore a vehicle and a boom for such a vehicle of the type mentioned so To design that the risk of statically unfavorable rope geometries and thus a folding of the platform is at least reduced.
  • the ballast weights are kept movably guided on the boom arms in the longitudinal direction, that drive means are provided to move the ballast weights along the Auslagerarme, and that the support cables to attached to the ballast weights.
  • the boom according to the invention is characterized in that the ballast weights are kept movably guided on the cantilever arms in the longitudinal direction thereof and that fastening means for attaching supporting cables are provided on the ballast weights.
  • the invention is thus based on the consideration to arrange the ballast weights movable on the boom arms, so that their position and thus also the point of force application of the support ropes, which act on the ballast weights change. For example, when the boom is lowered sharply, the ballast weights can be moved up to the work platform along the boom. As a result, the angle which the support rope encloses with the vertical decreases, with the result that the horizontal forces which are introduced into the superstructure are reduced. Furthermore, the torque which is introduced via the ballast weight and the swivel arm in the work platform, reduced because the ballast weights have a smaller distance from the platform. As a result, static unfavorable situations and in particular a folding down of the platform can be safely prevented.
  • the ballast weights are moved together or are moved. This ensures that the ballast weights each have the same distance from occupy the platform and according to the forces acting on the support cables and thus the superstructure and on the platform forces are uniform. However, when other loads such as occurring wind loads occur, it may also be possible to move the ballast weights independently of each other in order to compensate for the externally applied loads.
  • the drive means for the ballast weights may for example be designed in the form of toothed belt drives, and they are suitably controllable from the work platform.
  • the two extension arms can be connected to one another at their free end regions remote from the working platform in order to form a substantially U-shaped outrigger, which has a high stability.
  • the ballast weights are each held on a frame which surrounds the associated cantilever arm, or form this and the frame is movable on the cantilever arm in its longitudinal direction.
  • the frame By framing a very compact and stable arrangement is created. It is possible to support the frame on all sides of the boom.
  • the frame can also be guided in each case on opposite sides of the extension arm, so that the guides need only absorb pressure forces. This opens up the possibility of supporting the frame in a simple manner via rollers on the extension arm. In this way, the management effort is minimized, and it can also be prevented jamming in the area of the guides.
  • an actuating device is provided, in particular in the form of a traction sheave, and that the support cables are attached to the boom arms on the actuators and actuated for pivoting the boom arms.
  • the actuators for the support cables are provided directly on the boom here. The fact that they are positioned on the ballast weight and can be moved with it, they can be moved up to the platform for maintenance, so that the maintenance can be done from the work platform.
  • extension arms can be pivoted relative to the working platform by at least 120 °, in particular at least 140 °, and preferably by at least 160 °.
  • This embodiment offers the possibility of the cantilever arms between an upper pivot position and a lower pivot position in which they occupy almost a vertical position, but are slightly tilted away from the wall to be processed, to pivot.
  • FIG. 1 is shown in a schematic representation of a cooling tower K with an indoor vehicle 2 and an outdoor vehicle 3 according to the present invention.
  • the indoor vehicle 2 comprises a superstructure 4, which is held on the upper edge - ie the crown - of the cooling tower K moved.
  • the uppercarriage 4 has a base support 5 which extends from the outside of the cooling tower K to the inside and supported by several sets of rollers 6 on the top of the cooling tower and is movable along it. From the base support 5, a support 7 protrudes downwards, on which a plurality of sets of guide rollers 8 are held, which are supported horizontally on the side surfaces of a provided on the top of the cooling tower guide channel FK.
  • a weight 9 is held, which serves as a counterweight to the interior of the superstructure 4 hanging components of the indoor vehicle 2.
  • a downwardly projecting support structure 10 is provided, to which a working platform 11 is suspended via driving and safety cables 12, 13, via which the vertical position of the working platform 11 by means of a corresponding, not shown in the drawing Winch can be adjusted.
  • the work platform 11 is supported on a plurality of rollers 14 on the inner wall of the cooling tower K from. Furthermore, the work platform 11 is braced downwards by a tensioning cable 15 with a lowercarriage 16, which is held movably at the bottom of the cooling tower K along rails 17.
  • the outdoor vehicle 3 has a superstructure 18, which is formed in the same manner as the superstructure 4 of the indoor vehicle.
  • the only difference is that the work platform 11 is held at the end of the base support 5 projecting beyond the edge of the cooling tower K and, accordingly, the counterweight 9 hangs against the opposite inner end of the base support 5.
  • the working platform 11 is also hung here by means of driving and guiding cables 12, 13 to the superstructure 18 and can be connected via a non-illustrated Drive over these ropes 12, 13 are moved in the vertical direction.
  • rollers 14 are provided, via which the working platform 11 is supported on the convex curved outer wall of the cooling tower K.
  • the rollers 14 are configured to allow a process in both the vertical and horizontal directions.
  • the rollers 14 may be designed to be correspondingly rotatable.
  • a boom 19 is pivotally supported in a vertical plane, which protrudes from the working platform 11 in the direction away from the cooling tower K direction and carries ballast weights 20.
  • the boom 19 has two cantilever arms 21, which are each pivotally supported at its one end portion on the two sides of the platform 11 and protrude parallel thereto, the free ends of the two cantilever arms 24 to form a U-shaped boom 19 together by a in the drawing base, not shown, are connected.
  • the two extension arms 21 are pivoted to the work platform 11 by almost 180 °, so that they occupy almost vertical position in the upper and lower end position, in which case they are slightly swung away from the wall to be processed.
  • the ballast weights 20 are in the direction of the double arrow A of FIG FIG. 4 along the extension arms 21 movable.
  • the ballast weights 20 are each held on a frame 22, which, as in FIG. 5 is clearly visible, the respective cantilever arm 21 engages and is movably supported and guided on this.
  • the frame 22 has like the cantilever arm 21 has a rectangular cross section and is supported on all four outer sides of the extension arms 21 by guide rollers 23. To this Way need to be absorbed by the guide rollers 23 only compressive forces.
  • drives are provided, via which the frame 22 can be moved.
  • Each frame 22 carries on its upper side further a winch 24, here a traction sheave, over which a support rope 25 which is connected at its free end to the superstructure 18, up or can be unwound to the boom 19 relative to the platform 11 in to pivot a vertical plane.
  • a winch 24 here a traction sheave
  • the boom 19 In normal operation, the boom 19 is positioned approximately in a horizontal position, and the frames 22 with the ballast weight 20 are moved to the outer end of the boom arms 20 so that over the ballast weights 20 compressive forces are exerted on the platform 11 (see FIGS. 6 and 9 ).
  • the platform 11 When the platform 11 is raised, as it is also in FIG. 6 is shown, however, the horizontal forces that are introduced in the horizontal alignment of the boom 19 of the support cables 25 in the uppercar 18, too high. For this reason, when the work platform 11 is near the upper edge of the cooling tower K, the boom 19 is pivoted downwardly by extending the support cables 25 over the winches 24.

Abstract

The access equipment has a revolving platform which is arranged at the upper edge of the cooling tower (K). A work platform is hung with guide ropes at the revolving platform. Intersect is provided with two cantilever arms which are pivotably held at the work platform around a common axis. The cantilever arms are fixed at the revolving platform over supporting ropes. The ballast weights provided at the cantilever arms are held in longitudinal direction. The supporting ropes are secured at the ballast weights.

Description

Die vorliegende Erfindung betrifft eine Befahranlage für überhängende oder konvex gekrümmte Wände insbesondere von turmartigen Bauwerken wie beispielsweise Kühltürmen, mit

  • einem Oberwagen, der am oberen Rand der Wand verfahrbar anbringbar ist,
  • einer Arbeitsbühne, die mittels Fahr- und Führungsseilen an den Oberwagen gehängt ist,
  • einem den Fahrseilen zugeordneten Antrieb, um die Arbeitsbühne über die Fahrseile vertikal zu verfahren, und
  • einem Ausleger mit zwei Auslegerarmen, die an der Arbeitsbühne beabstandet zueinander und um eine gemeinsame Achse verschwenkbar gehalten sind und jeweils ein Ballast-Gewicht tragen, wobei die Auslegerarme über Stützseile an dem Oberwagen fixiert und über den Stützseilen zugeordnete Betätigungseinrichtungen gegenüber der Arbeitsbühne verschwenkbar sind. Des Weiteren betrifft die Erfindung einen Ausleger für eine solche Befahreinrichtung.
The present invention relates to a vehicle for overhanging or convex curved walls in particular of tower-like structures such as cooling towers, with
  • a superstructure, which can be moved around the top of the wall,
  • a working platform suspended by means of driving and guiding cables to the superstructure,
  • a drive associated with the drive cables for vertically moving the work platform over the drive cables, and
  • a boom with two boom arms spaced from each other on the work platform and pivotally supported about a common axis and each carrying a ballast weight, the boom arms being fixed to the superstructure via support ropes and pivoting relative to the work platform via actuators associated with the support ropes. Furthermore, the invention relates to a boom for such a transport device.

Befahranlagen der vorbeschriebenen Art sind in unterschiedlichen Ausführungsformen bekannt und werden in der Praxis beispielsweise eingesetzt, um Reparatur- und Sanierungsarbeiten an Kühltürmen von Kraftwerken und insbesondere von fossilen Kraftwerken vorzunehmen. Solche Kühltürme werden in Kraftwerken benötigt, um den erzeugten Wasserdampf abzukühlen und so dem Rückkühlbetrieb wieder zuzuführen. In fossilen Kraftwerken dien(t)en die Kühltürme auch dazu, zuvor gereinigte, d.h. entschwefelte und entstickte Rauchgase an die Umgebung abzuleiten. Diese aggressiven Medien müssen von der Betonschale des Kühlturms schadlos aufgenommen werden. Durch die beständige Beaufschlagung durch Rauchgase und/oder Wasserdampf ist die Betonschale einem gewissen Verschleiß ausgesetzt, sodass Instandhaltungs- und Beschichtungsarbeiten erforderlich sind.Access systems of the type described above are known in various embodiments and are used in practice, for example, to carry out repair and renovation work on cooling towers of power plants and in particular of fossil power plants. Such cooling towers are needed in power plants to cool the water vapor generated and thus supply the recooling operation again. In fossil power plants, the cooling towers also serve to divert previously cleaned, ie desulphurized and de-stoked flue gases to the environment. These aggressive media must be absorbed by the concrete shell of the cooling tower without damage. Due to the constant exposure to flue gases and / or water vapor, the concrete shell is exposed to a certain amount of wear, so that maintenance and coating work is required.

Zur Durchführung solcher Wartungs- und Reparaturarbeiten an den inneren und äußeren Wandflächen werden gattungsgemäße Befahranlagen eingesetzt. Diese bestehen in der Regel aus einer oder mehreren Außen- und Innen-Befahranlagen. Beide Befahranlagen besitzen einen Oberwagen, welcher sich am oberen Rand des Kühlturms abstützt und entlang des Randes verfahrbar ist. An den Oberwagen ist eine Arbeitsbühne über mehrere Fahr-und Sicherheitsseile gehängt, über welche auch die vertikale Position mittels entsprechender Antriebe eingestellt werden kann. Des Weiteren sind Mittel vorgesehen, um die Arbeitsbühne gegen die jeweilige Bauwerkwand zu drücken, und hierin unterscheiden sich die Außen- und Innen-Befahranlagen im Wesentlichen.To carry out such maintenance and repair work on the inner and outer walls generic access systems are used. These usually consist of one or more outdoor and indoor vehicles. Both vehicles have a superstructure, which is supported on the upper edge of the cooling tower and is movable along the edge. On the uppercarriage a working platform is suspended over several driving and safety ropes, over which also the vertical position can be adjusted by means of appropriate drives. Furthermore, means are provided to urge the platform against the respective building wall, and herein the outdoor and indoor facilities substantially differ.

Wenn beispielsweise die konvex gekrümmte Wandung eines Kühlturms bearbeitet werden soll, ist die Arbeitsbühne der Innen-Befahranlage über Spannseile mit einem Unterwagen verspannt, der am Boden des Kühlturms entlang von Schienen verfahrbar gehalten ist.If, for example, the convex curved wall of a cooling tower is to be processed, the working platform of the indoor vehicle is braced by tensioning cables with an undercarriage, which is movably held along rails at the bottom of the cooling tower.

Die Arbeitsbühne der Außen-Befahranlage ist in definiertem Abstand zu der Wand des Kühlturm oder dgl. bewegbar geführt. Konkret stützt sich die Arbeitsbühne über Laufelemente in Form von Laufrädern oder frei drehbaren Laufrollen an der Wand ab. Um den notwendigen Anpressdruck insbesondere bei überhängenden bzw. konvex gewölbten Wänden zu gewährleisten, ist an der Arbeitsbühne ein Ausleger angebracht, welcher von der Arbeitsbühne in der von der Wand wegweisenden Richtung abragt und an seinem freien Endbereich Ballast-Gewichte trägt. In der Regel besitzt der Ausleger zwei Auslegerarme, die jeweils an ihrem einen Endbereich an den beiden Seiten der Arbeitsbühne gehalten sind und parallel von dieser abragen, wobei die freien Enden der beiden Auslegerarme unter Bildung eines U-förmigen Auslegers miteinander durch einen Basisträger verbunden sind. Das freie Ende des Auslegers ist über zwei Stützseile, die im Bereich der freien Enden der Auslegerarme fixiert sind, mit dem Oberwagen verbunden. Des Weiteren sind Winden vorgesehen, um die Länge der Stützseile zu verkürzen und so den Ausleger nach oben zu schwenken oder in umgekehrter Weise die Länge der Zugseile zu vergrößern und so den Auslegerarm abzusenken. In der horizontalen Stellung des Auslegers werden die höchsten Anpressdrücke auf die Arbeitsbühne ausgeübt. Wenn die Arbeitsbühne angehoben wird, werden allerdings die horizontalen Kräfte, die bei horizontaler Ausrichtung des Auslegerarms von den Stützseilen auf den Oberwagen ausgeübt werden zu hoch. Gleiches gilt auch für die auf die Stützseile wirkenden Kräfte.The working platform of the outdoor vehicle is movably guided at a defined distance from the wall of the cooling tower or the like. Specifically, the work platform is supported by running elements in the form of wheels or freely rotatable rollers on the wall. In order to ensure the necessary contact pressure, especially in overhanging or convex walls, a boom is mounted on the platform, which protrudes from the working platform in the direction away from the wall and carries at its free end ballast weights. In general, the boom possesses two cantilever arms each supported at one end portion thereof on both sides of the work platform and projecting therefrom in parallel therefrom, the free ends of the two cantilever arms being connected together by a base support to form a U-shaped cantilever. The free end of the boom is connected via two support cables, which are fixed in the region of the free ends of the boom arms, connected to the superstructure. Furthermore, winches are provided to shorten the length of the support ropes and thus to pivot the boom upwards or conversely to increase the length of the pull ropes and thus lower the boom arm. In the horizontal position of the boom, the highest contact pressure is exerted on the working platform. When the platform is raised, however, the horizontal forces exerted by the support ropes on the superstructure when the boom is oriented horizontally become too high. The same applies to the forces acting on the support cables.

Aus diesem Grund wird der Ausleger nach unten geschwenkt, indem die Stützseile über die Winden verlängert werden, wenn sich die Arbeitsbühne nahe des oberen Randes der Wand befindet. Dieses Absenken kann jedoch auch zu Problemen führen, da bei zu stark nach unten geschwenktem Ausleger statisch ungünstige Verhältnisse auftreten können, die dazu führen, dass die Arbeitsbühne nach außen von der Kühlturmwandung weggeschwenkt wird bzw. umklappt.For this reason, the boom is pivoted downwards by extending the support ropes over the winches when the platform is near the top of the wall. However, this lowering can also lead to problems, since too unfavorably downwardly pivoted boom static unfavorable conditions may occur, which cause the platform is pivoted outwardly from the cooling tower wall or folds down.

Ferner wird als nachteilig angesehen, dass die Winden, über welche die Stützseile an den freien Enden des Auslegers fixiert sind, zu Wartungszwecken schlecht zugänglich sind.Furthermore, it is considered disadvantageous that the winches, over which the support cables are fixed at the free ends of the boom, are difficult to access for maintenance purposes.

Aufgabe der vorliegenden Erfindung ist es daher, eine Befahranlage sowie einen Ausleger für eine solche Befahranlage der eingangs genannten Art so auszugestalten, dass die Gefahr von statisch ungünstigen Seilgeometrien und damit eines Umklappens der Arbeitsbühne zumindest vermindert wird.Object of the present invention is therefore a vehicle and a boom for such a vehicle of the type mentioned so To design that the risk of statically unfavorable rope geometries and thus a folding of the platform is at least reduced.

Diese Aufgabe ist bei einer Befahranlage der eingangs genannten Art dadurch gelöst, dass die Ballast-Gewichte an den Auslegerarmen in deren Längsrichtung bewegbar geführt gehalten sind, dass Antriebsmittel vorgesehen sind, um die Ballast-Gewichte entlang der Auslagerarme zu verfahren, und dass die Stützseile an den Ballast-Gewichten befestigt sind. Entsprechend zeichnet sich der erfindungsgemäße Ausleger dadurch aus, dass die Ballast-Gewichte an den Auslegerarmen in deren Längsrichtung bewegbar geführt gehalten sind und dass an den Ballast-Gewichten Befestigungsmittel zur Anbringung von Stützseilen vorgesehen sind.This object is achieved in a vehicle of the type mentioned fact that the ballast weights are kept movably guided on the boom arms in the longitudinal direction, that drive means are provided to move the ballast weights along the Auslagerarme, and that the support cables to attached to the ballast weights. Accordingly, the boom according to the invention is characterized in that the ballast weights are kept movably guided on the cantilever arms in the longitudinal direction thereof and that fastening means for attaching supporting cables are provided on the ballast weights.

Der Erfindung liegt somit die Überlegung zugrunde, die Ballast-Gewichte an den Auslegerarmen verfahrbar anzuordnen, sodass sich ihre Position und damit auch der Kraftangriffspunkt der Stützseile, die an den Ballast-Gewichten angreifen, verändern lässt. Wenn beispielsweise der Auslegerarm stark abgesenkt wird, können die Ballast-Gewichte an die Arbeitsbühne entlang des Auslegerarms herangefahren werden. Hierdurch wird der Winkel, den das Stützseil mit der Vertikalen einschließt, kleiner mit der Folge, dass sich die Horizontalkräfte, welche in den Oberwagen eingeleitet werden, reduzieren. Des Weiteren wird das Drehmoment, welches über das Ballast-Gewicht und den Schwenkarm in die Arbeitsbühne eingeleitet wird, verringert, weil die Ballast-Gewichte einen geringeren Abstand von der Arbeitsbühne besitzen. In der Folge können statisch ungünstige Situationen und insbesondere ein Umklappen der Arbeitsbühne sicher verhindert werden.The invention is thus based on the consideration to arrange the ballast weights movable on the boom arms, so that their position and thus also the point of force application of the support ropes, which act on the ballast weights change. For example, when the boom is lowered sharply, the ballast weights can be moved up to the work platform along the boom. As a result, the angle which the support rope encloses with the vertical decreases, with the result that the horizontal forces which are introduced into the superstructure are reduced. Furthermore, the torque which is introduced via the ballast weight and the swivel arm in the work platform, reduced because the ballast weights have a smaller distance from the platform. As a result, static unfavorable situations and in particular a folding down of the platform can be safely prevented.

Gemäß einer Ausführungsform der Erfindung ist vorgesehen, dass die Ballast-Gewichte gemeinsam verfahrbar sind oder verfahren werden. Hierdurch wird erreicht, dass die Ballast-Gewichte jeweils den gleichen Abstand von der Arbeitsbühne einnehmen und entsprechend die auf die Stützseile und damit den Oberwagen sowie auf die Arbeitsbühne wirkenden Kräfte gleichmäßig sind. Beim Auftreten sonstiger Belastungen wie beispielsweise bei auftretenden Windlasten kann jedoch auch die Möglichkeit bestehen, die Ballast-Gewichte unabhängig voneinander zu verfahren, um die von außen einwirkenden Belastungen zu kompensieren.According to one embodiment of the invention it is provided that the ballast weights are moved together or are moved. This ensures that the ballast weights each have the same distance from occupy the platform and according to the forces acting on the support cables and thus the superstructure and on the platform forces are uniform. However, when other loads such as occurring wind loads occur, it may also be possible to move the ballast weights independently of each other in order to compensate for the externally applied loads.

Die Antriebsmittel für die Ballast-Gewichte können beispielswiese in Form von Zahnriemenantrieben ausgebildet sein, und sie sind zweckmäßigerweise von der Arbeitsbühne aus steuerbar.The drive means for the ballast weights may for example be designed in the form of toothed belt drives, and they are suitably controllable from the work platform.

Ferner können in an sich bekannter Weise die beiden Auslegerarme an ihren von der Arbeitsbühne fernen freien Endbereichen miteinander verbunden sein, um einen im Wesentlichen U-förmigen Ausleger zu bilden, der eine hohe Stabilität besitzt.Furthermore, in a manner known per se, the two extension arms can be connected to one another at their free end regions remote from the working platform in order to form a substantially U-shaped outrigger, which has a high stability.

Gemäß einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass die Ballast-Gewichte jeweils an einem Rahmen, welcher den zugehörigen Auslegerarm umgreift, gehalten sind oder diesen bilden und der Rahmen an dem Auslegerarm in dessen Längsrichtung verfahrbar ist. Durch die Rahmenbildung wird eine sehr kompakte und stabile Anordnung geschaffen. Dabei ist es möglich, den Rahmen allseitig an dem Auslegerarm abzustützen. Insbesondere kann der Rahmen auch jeweils auf gegenüberliegenden Seiten an dem Auslegerarm geführt werden, sodass die Führungen nur Druckkräfte aufnehmen müssen. Hierdurch wird die Möglichkeit eröffnet, den Rahmen in einfacher Weise über Rollen an dem Auslegerarm abzustützen. Auf diese Weise wird der Führungsaufwand minimiert, und es kann auch ein Verklemmen im Bereich der Führungen verhindert werden.According to a preferred embodiment of the invention, it is provided that the ballast weights are each held on a frame which surrounds the associated cantilever arm, or form this and the frame is movable on the cantilever arm in its longitudinal direction. By framing a very compact and stable arrangement is created. It is possible to support the frame on all sides of the boom. In particular, the frame can also be guided in each case on opposite sides of the extension arm, so that the guides need only absorb pressure forces. This opens up the possibility of supporting the frame in a simple manner via rollers on the extension arm. In this way, the management effort is minimized, and it can also be prevented jamming in the area of the guides.

Gemäß einer weiteren Ausführungsform der Erfindung ist vorgesehen, dass an den Ballast-Gewichten jeweils eine Betätigungseinrichtung insbesondere in der Form einer Treibscheibenwinde vorgesehen ist, und dass die Stützseile an den Auslegerarmen über die Betätigungseinrichtungen befestigt und zum Schwenken der Auslegerarme betätigbar sind. In an sich bekannter Weise sind hier die Betätigungseinrichtungen für die Stützseile unmittelbar am Auslegerarm vorgesehen. Dadurch, dass sie an dem Ballast-Gewicht positioniert und mit diesem verfahrbar sind, können sie zu Wartungszwecken an die Arbeitsbühne herangefahren werden, sodass die Wartung von der Arbeitsbühne aus erfolgen kann.According to a further embodiment of the invention it is provided that on the ballast weights in each case an actuating device is provided, in particular in the form of a traction sheave, and that the support cables are attached to the boom arms on the actuators and actuated for pivoting the boom arms. In known manner, the actuators for the support cables are provided directly on the boom here. The fact that they are positioned on the ballast weight and can be moved with it, they can be moved up to the platform for maintenance, so that the maintenance can be done from the work platform.

Schließlich ist zweckmäßiger Weise vorgesehen, dass die Auslegerarme gegenüber der Arbeitsbühne um wenigstens 120°, insbesondere wenigstens 140° und vorzugsweise um wenigstens 160° verschwenkbar sind. Diese Ausgestaltung bietet die Möglichkeit, die Auslegerarme zwischen einer oberen Schwenkposition und einer unteren Schwenkposition, in der sie nahezu eine vertikale Lage einnehmen, jedoch von der zu bearbeitenden Wand leicht weggekippt sind, zu verschwenken.Finally, it is expediently provided that the extension arms can be pivoted relative to the working platform by at least 120 °, in particular at least 140 °, and preferably by at least 160 °. This embodiment offers the possibility of the cantilever arms between an upper pivot position and a lower pivot position in which they occupy almost a vertical position, but are slightly tilted away from the wall to be processed, to pivot.

Hinsichtlich weiterer vorteilhafter Ausgestaltungen der Erfindung wird auf die Unteransprüche sowie die nachfolgende Beschreibung eines Ausführungsbeispiels und die Bezugnahme auf die beiliegende Zeichnung verwiesen. In der Zeichnung zeigt:

Figur 1
in schematischer Darstellung einen Kühlturm mit einer Innen-Befahranlage und einer Außen-Befahranlage gemäß der vorliegenden Erfindung,
Figur 1a
den unteren Endabschnitt der Innen-Befahranlage aus Figur 1,
Figur 2
den Oberwagen der Innen-Befahranlage mit der daran gehaltenen Arbeitsbühne aus Figur 1 in vergrößerter Darstellung,
Figur 3
den Ausschnitt aus Figur 1a in weiter vergrößerter Darstellung,
Figur 4
die Außen-Befahranlage gemäß der vorliegenden Erfindung aus Figur 1 in vergrößerter Darstellung,
Figur 5
in Querschnittsansicht einen Auslegerarm der Außen-Befahranlage mit einem daran verfahrbar geführten Rahmen,
Figur 6
in schematischer Darstellung die Funktionsweise der erfindungsgemäßen Außen-Befahranlage,
die Figuren 7 bis 9
unterschiedliche Betriebspositionen der AußenBefahranlage gemäß der vorliegenden Erfindung und
Figur 10
in schematischer Darstellung eine Außen-Befahranlage in instabilem Zustand.
With regard to further advantageous embodiments of the invention, reference is made to the subclaims and the following description of an embodiment and the reference to the accompanying drawings. In the drawing shows:
FIG. 1
1 is a schematic representation of a cooling tower with an inside traffic control system and an outside traffic control system according to the present invention,
FIG. 1a
the lower end portion of the indoor vehicle FIG. 1 .
FIG. 2
the superstructure of the indoor vehicle with the work platform held on it FIG. 1 in an enlarged view,
FIG. 3
the cutout FIG. 1a in a further enlarged view,
FIG. 4
the outdoor vehicle according to the present invention from FIG. 1 in an enlarged view,
FIG. 5
in cross-sectional view of a boom arm of the outdoor vehicle with a movable guided frame,
FIG. 6
a schematic representation of the operation of the outdoor vehicle according to the invention,
FIGS. 7 to 9
different operating positions of the external vehicle according to the present invention and
FIG. 10
in a schematic representation of an outdoor vehicle in an unstable state.

In Figur 1 ist in schematischer Darstellung ein Kühlturm K mit einer Innen-Befahranlage 2 und einer Außen-Befahranlage 3 gemäß der vorliegenden Erfindung dargestellt. Die Innen-Befahranlage 2 umfasst einen Oberwagen 4, der an der am oberen Rand - d.h. der Krone - des Kühlturms K verfahrbar gehalten ist. Konkret besitzt der Oberwagen 4 einen Basisträger 5, der sich von der Außenseite des Kühlturms K zur Innenseite erstreckt und über mehrere Sätze von Laufrollen 6 an der Kühlturmoberseite abgestützt und entlang von dieser verfahrbar ist. Von dem Basisträger 5 ragt ein Träger 7 nach unten ab, an welchem mehrere Sätze von Führungsrollen 8 gehalten sind, die sich an den Seitenflächen eines an der Kühlturmoberseite vorgesehenen Führungskanals FK horizontal abstützen.In FIG. 1 is shown in a schematic representation of a cooling tower K with an indoor vehicle 2 and an outdoor vehicle 3 according to the present invention. The indoor vehicle 2 comprises a superstructure 4, which is held on the upper edge - ie the crown - of the cooling tower K moved. Specifically, the uppercarriage 4 has a base support 5 which extends from the outside of the cooling tower K to the inside and supported by several sets of rollers 6 on the top of the cooling tower and is movable along it. From the base support 5, a support 7 protrudes downwards, on which a plurality of sets of guide rollers 8 are held, which are supported horizontally on the side surfaces of a provided on the top of the cooling tower guide channel FK.

An dem nach außen über den Rand des Kühlturms K vorstehenden Endbereich des Basisträgers 5 ist ein Gewicht 9 gehalten, das als Gegengewicht zu den innen an dem Oberwagen 4 hängenden Bauteile der Innen-Befahranlage 2 dient. An dem inneren Endbereich des Basisträgers 4 ist eine nach unten ragende Trägerkonstruktion 10 vorgesehen, an welche eine Arbeitsbühne 11 über Fahr- und Sicherheitsseile 12, 13 gehängt ist, über welche auch die vertikale Position der Arbeitsbühne 11 mittels einer entsprechenden, in der Zeichnung nicht dargestellten Seilwinde eingestellt werden kann.At the outwardly beyond the edge of the cooling tower K projecting end portion of the base support 5, a weight 9 is held, which serves as a counterweight to the interior of the superstructure 4 hanging components of the indoor vehicle 2. At the inner end region of the base support 4, a downwardly projecting support structure 10 is provided, to which a working platform 11 is suspended via driving and safety cables 12, 13, via which the vertical position of the working platform 11 by means of a corresponding, not shown in the drawing Winch can be adjusted.

Die Arbeitsbühne 11 stützt sich über mehrere Laufrollen 14 an der Innenwand des Kühlturms K ab. Des Weiteren ist die Arbeitsbühne 11 nach unten hin durch ein Spannseil 15 mit einem Unterwagen 16 verspannt, der am Boden des Kühlturms K entlang von Schienen 17 verfahrbar gehalten ist.The work platform 11 is supported on a plurality of rollers 14 on the inner wall of the cooling tower K from. Furthermore, the work platform 11 is braced downwards by a tensioning cable 15 with a lowercarriage 16, which is held movably at the bottom of the cooling tower K along rails 17.

Die Außen-Befahranlage 3 besitzt einen Oberwagen 18, der in gleicher Weise wie der Oberwagen 4 der Innen-Befahranlage ausgebildet ist. Der einzige Unterschied besteht darin, dass die Arbeitsbühne 11 an dem über den Rand des Kühlturms K nach außen ragenden Ende des Basisträgers 5 gehalten ist und entsprechend das Gegengewicht 9 an dem gegenüberliegenden inneren Ende des Basisträgers 5 hängt.The outdoor vehicle 3 has a superstructure 18, which is formed in the same manner as the superstructure 4 of the indoor vehicle. The only difference is that the work platform 11 is held at the end of the base support 5 projecting beyond the edge of the cooling tower K and, accordingly, the counterweight 9 hangs against the opposite inner end of the base support 5.

Die Arbeitsbühne 11 ist auch hier mittels Fahr- und Führungsseilen 12, 13 an den Oberwagen 18 gehängt und kann über einen nicht näher dargestellten Antrieb über diese Seile 12, 13 in vertikaler Richtung verfahren werden. An der Arbeitsbühne 11 sind Laufrollen 14 vorgesehen, über welche sich die Arbeitsbühne 11 an der konvex gekrümmten Außenwandung des Kühlturms K abstützt. Die Laufrollen 14 sind so ausgestaltet, dass sie ein Verfahren sowohl in vertikaler, als auch in horizontaler Richtung erlauben. Hierzu können die Laufrollen 14 entsprechend drehbar ausgestaltet sein. Alternativ ist es möglich, zwei Sätze von Laufrollen 14 vorzusehen, die der vertikalen Verfahrrichtung und der horizontalen Verfahrrichtung zugeordnet sind, wobei der jeweils nicht aktive Satz von Laufrollen 14 weggeschwenkt werden kann.The working platform 11 is also hung here by means of driving and guiding cables 12, 13 to the superstructure 18 and can be connected via a non-illustrated Drive over these ropes 12, 13 are moved in the vertical direction. On the work platform 11 rollers 14 are provided, via which the working platform 11 is supported on the convex curved outer wall of the cooling tower K. The rollers 14 are configured to allow a process in both the vertical and horizontal directions. For this purpose, the rollers 14 may be designed to be correspondingly rotatable. Alternatively, it is possible to provide two sets of rollers 14, which are associated with the vertical direction of travel and the horizontal direction of travel, wherein the respective non-active set of rollers 14 can be pivoted away.

An der Arbeitsbühne 11 ist ein Ausleger 19 in einer vertikalen Ebene schwenkbar gehalten, welcher von der Arbeitsbühne 11 in der vom Kühlturm K wegweisenden Richtung abragt und Ballast-Gewichte 20 trägt. Der Ausleger 19 besitzt zwei Auslegerarme 21, die jeweils an ihrem einen Endbereich an den beiden Seiten der Arbeitsbühne 11 schwenkbar gehalten sind und parallel von dieser abragen, wobei die freien Enden der beiden Auslegerarme 24 unter Bildung eines U-förmigen Auslegers 19 miteinander durch einen in der Zeichnung nicht dargestellten Basisträger verbunden sind. In der dargestellten Ausführungsform sind die beiden Auslegerarme 21 mit der Arbeitsbühne 11 um knapp 180° schwenkbar, so dass sie in der oberen und unteren Endlage jeweils fast die vertikale Lage einnehmen, wobei sie dann leicht von der zu bearbeitenden Wand weggeschwenkt sind.On the work platform 11, a boom 19 is pivotally supported in a vertical plane, which protrudes from the working platform 11 in the direction away from the cooling tower K direction and carries ballast weights 20. The boom 19 has two cantilever arms 21, which are each pivotally supported at its one end portion on the two sides of the platform 11 and protrude parallel thereto, the free ends of the two cantilever arms 24 to form a U-shaped boom 19 together by a in the drawing base, not shown, are connected. In the illustrated embodiment, the two extension arms 21 are pivoted to the work platform 11 by almost 180 °, so that they occupy almost vertical position in the upper and lower end position, in which case they are slightly swung away from the wall to be processed.

Erfindungsgemäß sind die Ballast-Gewichte 20 in der Richtung des Doppelpfeils A von Figur 4 entlang der Auslegerarme 21 verfahrbar. Hierzu sind die Ballast-Gewichte 20 jeweils an einem Rahmen 22 gehalten, welcher, wie in Figur 5 gut erkennbar ist, den jeweiligen Auslegerarm 21 umgreift und verfahrbar an diesem abgestützt und geführt ist. Der Rahmen 22 besitzt wie der Auslegerarm 21 einen rechteckigen Querschnitt und ist an allen vier Außenseiten der Auslegerarme 21 durch Führungsrollen 23 abgestützt. Auf diese Weise brauchen von den Führungsrollen 23 nur Druckkräfte aufgenommen zu werden. Des Weiteren sind Antriebe vorgesehen, über welche die Rahmen 22 verfahren werden kann.According to the invention, the ballast weights 20 are in the direction of the double arrow A of FIG FIG. 4 along the extension arms 21 movable. For this purpose, the ballast weights 20 are each held on a frame 22, which, as in FIG. 5 is clearly visible, the respective cantilever arm 21 engages and is movably supported and guided on this. The frame 22 has like the cantilever arm 21 has a rectangular cross section and is supported on all four outer sides of the extension arms 21 by guide rollers 23. To this Way need to be absorbed by the guide rollers 23 only compressive forces. Furthermore, drives are provided, via which the frame 22 can be moved.

Jeder Rahmen 22 trägt an seiner Oberseite ferner eine Seilwinde 24, hier eine Treibscheibenwinde, über welche ein Stützseil 25, welches an seinem freien Ende mit dem Oberwagen 18 verbunden ist, auf- oder abgewickelt werden kann, um den Ausleger 19 gegenüber der Arbeitsbühne 11 in einer vertikalen Ebene zu verschwenken.Each frame 22 carries on its upper side further a winch 24, here a traction sheave, over which a support rope 25 which is connected at its free end to the superstructure 18, up or can be unwound to the boom 19 relative to the platform 11 in to pivot a vertical plane.

Im normalen Betrieb wird der Ausleger 19 etwa in horizontaler Lage positioniert, und die Rahmen 22 mit den Ballast-Gewicht 20 werden an das äußere Ende der Auslegerarme 20 verfahren, sodass über die Ballast-Gewichte 20 Druckkräfte auf die Arbeitsbühne 11 ausgeübt werden (siehe Figuren 6 und 9). Wenn die Arbeitsbühne 11 angehoben wird, wie dies ebenfalls in Figur 6 gezeigt ist, werden allerdings die horizontalen Kräfte, die bei horizontaler Ausrichtung des Auslegers 19 von den Stützseilen 25 in den Oberwagen 18 eingeleitet werden, zu hoch. Aus diesem Grund wird der Ausleger 19, wenn sich die Arbeitsbühne 11 nahe des oberen Randes des Kühlturms K befindet, nach unten geschwenkt, indem die Stützseile 25 über die Seilwinden 24 verlängert werden. Dieses Absenken kann jedoch zu Problemen führen, da bei zu stark nach unten geschwenktem Ausleger 19 statisch ungünstige Verhältnisse auftreten können, die dazu führen können, dass die Arbeitsbühne 11 nach außen von der Kühlturmwandung weggeschwenkt wird bzw. umklappt, wie dies in Figur 10 angedeutet ist. Aus diesem Grund werden in der nach unten geschwenkten Lage die Ballast-Gewichte 20 über die Rahmen 22 an die Arbeitsbühne 11 herangefahren. Ein Vergleich der Figuren 7 und 8 zeigt, dass auf diese Weise der Winkel α , da das Stützseil 25 mit der Vertikalen einschließt, kleiner wird, sodass die auf den Oberwagen 18 wirkenden horizontalen Kräfte abnehmen. Des Weiteren wird auch der Abstand zwischen dem Angriffspunkt der Ballast-Gewichte 20 an den Auslegerarmen 21 und der Arbeitsbühne verringert mit der Folge, dass das Drehmoment auf die Arbeitsbühne 14 wirkende und diese von dem Kühlturm K wegschwenkende Drehmoment abnimmt. Im Ergebnis wird eine stabile Anordnung erzielt.In normal operation, the boom 19 is positioned approximately in a horizontal position, and the frames 22 with the ballast weight 20 are moved to the outer end of the boom arms 20 so that over the ballast weights 20 compressive forces are exerted on the platform 11 (see FIGS. 6 and 9 ). When the platform 11 is raised, as it is also in FIG. 6 is shown, however, the horizontal forces that are introduced in the horizontal alignment of the boom 19 of the support cables 25 in the uppercar 18, too high. For this reason, when the work platform 11 is near the upper edge of the cooling tower K, the boom 19 is pivoted downwardly by extending the support cables 25 over the winches 24. However, this lowering can lead to problems, since at too much downwardly pivoted boom 19 can occur statically unfavorable conditions that can cause the platform 11 is pivoted to the outside of the cooling tower wall or pivots, as shown in FIG. 10 is indicated. For this reason, the ballast weights 20 are moved over the frame 22 to the working platform 11 in the downwardly pivoted position. A comparison of FIGS. 7 and 8 shows that in this way the angle α, since the support rope 25 includes with the vertical, becomes smaller, so that the forces acting on the upper carriage 18 horizontal forces decrease. Furthermore, the distance between the point of application of the ballast weights 20 to the boom arms 21 and the platform reduced with the result that the torque acting on the platform 14 and this wegschwenkende away from the cooling tower K torque decreases. As a result, a stable arrangement is achieved.

Claims (14)

Befahranlage für überhängende oder konvex gekrümmte Wände insbesondere von turmartigen Bauwerken wie beispielsweise Kühltürmen, mit - einem Oberwagen (18), der am oberen Rand der Wand (K) verfahrbar anbringbar ist, - einer Arbeitsbühne (11), die mittels Fahr- und Führungsseilen (12, 13) an den Oberwagen (18) gehängt ist, - einem den Fahrseilen (12) zugeordneten Antrieb, um die Arbeitsbühne (11) über die Fahrseile (12) vertikal zu verfahren, und - einem Ausleger (19) mit zwei Auslegerarmen (21), die an der Arbeitsbühne (11) beabstandet zueinander und um eine gemeinsame Achse verschwenkbar gehalten sind und jeweils ein Ballast-Gewicht (20) tragen, wobei die Auslegerarme (21) über Stützseile (25) an dem Oberwagen (18) fixiert und über den Stützseilen (25) zugeordnete Betätigungseinrichtungen (24) gegenüber der Arbeitsbühne (11) verschwenkbar sind, dadurch gekennzeichnet, dass die Ballast-Gewichte (20) an den Auslegerarmen (21) in deren Längsrichtung bewegbar geführt gehalten sind, dass Antriebsmittel vorgesehen sind, um die Ballast-Gewichte (20) entlang der Auslagerarme (21) zu verfahren, und dass die Stützseile (25) an den Ballast-Gewichten (20) befestigt sind. Access control system for overhanging or convexly curved walls, in particular tower-like structures such as cooling towers, with a superstructure (18) which is movably attachable to the upper edge of the wall (K), a working platform (11) which is suspended from the superstructure (18) by means of driving and guiding cables (12, 13), - A the ropes (12) associated drive to move the platform (11) via the drive cables (12) vertically, and - A boom (19) with two cantilever arms (21) on the platform (11) spaced from each other and are pivotally supported about a common axis and each carrying a ballast weight (20), wherein the cantilever arms (21) via support cables (21) 25) are fixed to the uppercarriage (18) and actuators (24) associated with the supporting cables (25) are pivotable relative to the working platform (11), characterized in that the ballast weights (20) on the cantilever arms (21) in their longitudinal direction are movably guided, that drive means are provided to move the ballast weights (20) along the Auslagerarme (21), and that the support cables (25) are attached to the ballast weights (20). Befahranlage nach Anspruch 1, dadurch gekennzeichnet, dass die Ballastgewichte (20) gemeinsam verfahrbar sind oder verfahren werden.Access system according to claim 1, characterized in that the ballast weights (20) are movable together or are moved. Befahranlage nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Antriebsmittel für die Ballast-Gewichte (20) in Form von Zahnriemenantrieben ausgebildet sind.Access control system according to claim 1 or 2, characterized in that the drive means for the ballast weights (20) are designed in the form of toothed belt drives. Befahranlage nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Antriebsmittel für die Ballast-Gewichte (20) von der Arbeitsbühne (11) aus steuerbar sind.Access control system according to one of the preceding claims, characterized in that the drive means for the ballast weights (20) from the working platform (11) are controllable. Befahranlage nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die beiden Auslegerarme (21) an ihren von der Arbeitsbühne (11) fernen freien Endbereichen miteinander verbunden sind.Access control system according to one of the preceding claims, characterized in that the two extension arms (21) are connected to one another at their free end regions remote from the working platform (11). Befahranlage nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die beiden Auslegerarme (21) parallel zueinander angeordnet sind.Access control system according to one of the preceding claims, characterized in that the two extension arms (21) are arranged parallel to each other. Befahranlage nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Ballast-Gewichte (20) jeweils an einem Rahmen (22), welcher den zugehörigen Auslegerarm (21) umgreift, gehalten sind oder diesen bilden, und der Rahmen (22) an dem Auslegerarm (21) in dessen Längsrichtung verfahrbar ist.Access control system according to one of the preceding claims, characterized in that the ballast weights (20) in each case on a frame (22) which surrounds the associated cantilever arm (21) are held or form, and the frame (22) on the cantilever arm (21) is movable in the longitudinal direction. Befahranlage nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass an den Ballast-Gewichten (20) jeweils eine Betätigungseinrichtung (24) insbesondere in der Form einer Treibscheibenwinde vorgesehen ist, und dass die Stützseile (25) an den Auslegerarmen (21) über die Betätigungseinrichtungen (24) befestigt und zum Schwenken der Auslegerarme (21) betätigbar sind.Access control system according to one of the preceding claims, characterized in that on the ballast weights (20) each have an actuating device (24) is provided, in particular in the form of a traction sheave, and that the support cables (25) on the boom arms (21) via the actuators (24) attached and for pivoting the cantilever arms (21) are actuated. Ausleger zum Anpressen einer hängenden Arbeitsbühne an eine Wand, insbesondere an eine überhängende Wand oder eine konvex gekrümmte Wand, für eine Befahranlage nach einem der vorherigen Ansprüche, mit zwei Auslegerarmen (21), die an einer Arbeitsbühne (11) beabstandet zueinander und um eine gemeinsame Achse verschwenkbar anbringbar sind und jeweils ein Ballast-Gewicht (20) tragen, dadurch gekennzeichnet, dass die Ballast-Gewichte (20) an den Auslegerarmen (21) in deren Längsrichtung bewegbar geführt gehalten sind und dass an den Ballast-Gewichten (20) Befestigungsmittel (24) zur Anbringung von Stützseilen (25) vorgesehen sind.A boom for pressing a suspended platform on a wall, in particular on an overhanging wall or a convex curved wall, for a vehicle according to one of the preceding claims, with two boom arms (21) spaced on a working platform (11) to each other and about a common axis are pivotally attachable and each carrying a ballast weight (20), characterized in that the ballast weights (20) are held movably guided on the cantilever arms (21) in the longitudinal direction and that to the ballast Weights (20) fastening means (24) for attachment of support cables (25) are provided. Ausleger nach Anspruch 9, dadurch gekennzeichnet, dass die beiden Auslegerarme (21) an ihren von den Befestigungsmitteln fernen freien Endbereichen miteinander verbunden sind.Boom according to Claim 9, characterized in that the two extension arms (21) are connected to one another at their free end regions remote from the attachment means. Ausleger nach Anspruch 9 oder 10, dadurch gekennzeichnet, dass die beiden Auslegerarme (21) parallel zueinander angeordnet sind.Boom according to claim 9 or 10, characterized in that the two extension arms (21) are arranged parallel to each other. Ausleger nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, dass die Ballast-Gewichte (20) jeweils an einem Rahmen (22), welcher den zugehörigen Auslegerarm (21) umgreift, gehalten sind oder diesen bilden, und der Rahmen (22) an dem Auslegerarm (21) in dessen Längsrichtung verfahrbar ist.Boom according to one of claims 9 to 11, characterized in that the ballast weights (20) each on a frame (22) which surrounds the associated cantilever arm (21) are held or form, and the frame (22) the extension arm (21) is movable in the longitudinal direction thereof. Ausleger nach einem der Ansprüche 9 bis 12, dadurch gekennzeichnet, dass an den Ballast-Gewichten (20) jeweils eine Betätigungseinrichtung (24) insbesondere in der Form einer Treibscheibenwinde vorgesehen ist, wobei Stützseile (25) an den Auslegerarmen (21) über die Betätigungseinrichtungen (24) befestigbar und betätigbar sind.Boom according to one of claims 9 to 12, characterized in that on the ballast weights (20) each have an actuating device (24) is provided, in particular in the form of a traction sheave, wherein support ropes (25) on the cantilever arms (21) via the actuators (24) can be fastened and actuated. Ausleger nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Auslegerarme (21) gegenüber der Arbeitsbühne (11) um wenigstens 120°, insbesondere um wenigstens 140° und vorzugsweise um wenigstens 160° verschwenkbar sind.Boom according to one of the preceding claims, characterized in that the extension arms (21) are pivotable relative to the working platform (11) by at least 120 °, in particular by at least 140 ° and preferably by at least 160 °.
EP13172344.7A 2012-06-21 2013-06-17 Access system for overhanging or convex curved walls Active EP2677095B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201210105417 DE102012105417B4 (en) 2012-06-21 2012-06-21 Access system for overhanging or convex curved walls

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EP2677095A2 true EP2677095A2 (en) 2013-12-25
EP2677095A3 EP2677095A3 (en) 2014-07-02
EP2677095B1 EP2677095B1 (en) 2016-08-24

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DE (2) DE102012105417B4 (en)
ES (1) ES2591207T3 (en)
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CN104963495A (en) * 2015-06-05 2015-10-07 中国十七冶集团有限公司 Suspension hanging basket for installation of roof surface bottom layer color plate
CN104963495B (en) * 2015-06-05 2017-07-14 中国十七冶集团有限公司 A kind of hanging basket for installing roofing bottom colored steel
EP3112555A1 (en) * 2015-06-29 2017-01-04 Politechnika Slaska A device for moving across vertical construction objects, particularly cooling towers and dams
CN105544956A (en) * 2015-12-14 2016-05-04 中煤建筑安装工程集团有限公司 Coal bunker external air cannon platform work vehicle
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CN111648596A (en) * 2020-05-07 2020-09-11 五冶集团上海有限公司 Device and method for using outer platform of shallow circular bin slip form as outer wall coating construction platform
CN111648596B (en) * 2020-05-07 2021-12-07 五冶集团上海有限公司 Device and method for using outer platform of shallow circular bin slip form as outer wall coating construction platform
CN113090000A (en) * 2021-05-26 2021-07-09 华电重工股份有限公司 Hanging basket construction device for curved surface appearance building
CN113090000B (en) * 2021-05-26 2023-02-17 华电重工股份有限公司 Hanging basket construction device for curved surface appearance building

Also Published As

Publication number Publication date
EP2677095A3 (en) 2014-07-02
PL2677095T3 (en) 2017-02-28
ES2591207T3 (en) 2016-11-25
DE202013005412U1 (en) 2013-09-23
DE102012105417A1 (en) 2013-12-24
EP2677095B1 (en) 2016-08-24
DE102012105417B4 (en) 2014-02-20

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