EP0464062B1 - Device for inspecting the underside of bridges - Google Patents

Device for inspecting the underside of bridges Download PDF

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Publication number
EP0464062B1
EP0464062B1 EP90904744A EP90904744A EP0464062B1 EP 0464062 B1 EP0464062 B1 EP 0464062B1 EP 90904744 A EP90904744 A EP 90904744A EP 90904744 A EP90904744 A EP 90904744A EP 0464062 B1 EP0464062 B1 EP 0464062B1
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EP
European Patent Office
Prior art keywords
lifting tower
intermediate support
guide member
bridge
scaffolding
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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.)
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EP90904744A
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German (de)
French (fr)
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EP0464062A1 (en
Inventor
Alfons Moog
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Individual
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Individual
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Priority to AT90904744T priority Critical patent/ATE86324T1/en
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/10Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
    • E01D19/106Movable inspection or maintenance platforms, e.g. travelling scaffolding or vehicles specially designed to provide access to the undersides of bridges

Definitions

  • the invention relates to a bridge underside device with a chassis, an intermediate support attached to the chassis, a guide member rotatably mounted on the intermediate support about a horizontal axis of rotation, a lifting tower accommodated by the guide member and movable vertically to its axis of rotation with four corner spars, and one on the lifting tower about its longitudinal central axis rotatably mounted lower part of the lift tower and a work platform attached to it.
  • the intermediate carrier is a carriage which can move transversely on the chassis.
  • the lifting tower has a square cross section.
  • the disadvantages are the high space requirement, which makes it difficult to close the device tightly during transport, and the unfavorable weight distribution due to the symmetrical lifting tower cross section.
  • the invention has for its object to propose a compact and versatile self-assembling underside bridge device with increased stability.
  • this object is achieved according to the invention in that the guide member has a flat shape and is in sliding engagement only with the two adjacent corner bars of the lifting tower, and that these corner bars are designed for a higher load capacity than the other two Corner pillars.
  • Racks can also be attached to the loaded corner spars, which work together with a rack and pinion drive on the guide element to drive the lifting tower.
  • the guide member is preferably mounted on the intermediate carrier by means of a turntable, which is preferably also flat and plate-shaped.
  • the guide member In order to extend the lifting tower close to its free end, the guide member preferably has a shorter section with respect to its axis of rotation to the free end of the lifting tower and a longer section facing the work platform.
  • the intermediate carrier be mounted on the chassis by means of a lever parallelogram that can be pivoted about vertical axes and consists of at least two levers.
  • the unit which is folded up during transport and consists of the lifting tower and the work platform, loads parallel to itself above the edge of the bridge and then swings around the horizontal Set up the axis of rotation.
  • the parallel levers are preferably telescopic.
  • a third, preferably slightly higher, parallel lever can also be provided. If these three parallel levers can be individually telescoped and detached from the intermediate carrier, columns or masts arranged on the edge of the bridge can be bypassed by alternately pulling back the parallel levers with the bridge underside device installed. In the swung-out state, the parallel levers only have to be so far apart from one another that the mast in question finds space between them.
  • a major advantage of this design is that the work platform can be folded out of the lift tower from a work position parallel to the bridge and can accordingly be transported lying on the lift tower with the floor up.
  • the intermediate girder be attachable to the narrow side of a mobile portal scaffold. It can be the same intermediate carrier that is otherwise articulated on the parallel levers of the chassis. Instead, it is connected to length-adjustable cantilevers of the portal scaffolds, which are expediently attached to a carriage that can be moved in the vertical direction on the portal scaffold. To bypass lampposts or the like, three cantilevers which are arranged at horizontal intervals and can be individually length-adjusted and detached from the intermediate carrier can also be provided here.
  • a further proposal amounts to taking the load-bearing portal on the same road transport vehicle as the rest of the device.
  • the portal frame is preferably horizontal and transverse to Direction of passage telescopic and provided with castors. It has an opening for a road vehicle on one narrow side, onto which a structural unit consisting of the intermediate carrier, the guide element, the lifting tower and the work platform is loaded. Suitable connecting elements are provided for this purpose in order to additionally accommodate the portal scaffolding on this road vehicle.
  • the receiving devices for the intermediate carrier and the other components of the device are attached.
  • the device according to Figures 1 to 6 is built on a five-axle semi-trailer, which also serves as a transport and operating chassis. With the help of the air pressure suspension device of the three central axles, the chassis 1 is raised so far during road transport that the wheels 2 and 3 of the unsprung outer axles stand out from the road.
  • the lifting tower 4 has a rotatable lower part 5 of the lifting tower.
  • the work bridge 7, which has a telescopic additional bridge 8, is articulated about a folding axis 6.
  • the lifting tower 4 is guided in a longitudinally movable manner on an elongated flat guide member 9 with its corner spars facing this guide member.
  • the reinforced bars have a corresponding cross-sectional profile and, in the case of a rack and pinion drive, a rack.
  • the guide member 9 is rotatably mounted on a flat intermediate support 11 about a horizontal axis of rotation 12 by means of a turntable 10. Precautions have been taken to ensure that a rotational movement of at least 270 ° is possible in both directions.
  • the intermediate carrier 11 is mounted on the chassis 1 by means of two parallel levers 13 and 14.
  • the chassis-side joints are located on a bearing block 15. The joint axes run perpendicularly, so that the intermediate carrier 11 and with it all other parts can be lifted laterally from the chassis parallel to itself in their transport position.
  • Fig. 4 shows the completed unloading movement at the edge of a bridge 16.
  • a third parallel lever 18 is shown here to demonstrate the avoidance of lampposts 17 or the like at the edge of the bridge the other two and is arranged slightly raised. By swiveling the parallel levers a little more than 90 °, the parts of the device that were still folded were raised beyond the edge of the bridge, where they are initially still in a horizontal position.
  • the work platform 7 is at the top and, as also shown in FIG. 3, has its bottom up.
  • the lower part of the lifting tower 5 initially points to the left.
  • the lifting tower is now turned to the right (arrow in Fig. 5).
  • the work platform 7 hangs freely downwards and detaches from the tower during the further rotary movement. 5
  • the tower has already covered an angle of 150 °.
  • the edge of the work platform on the lower part 5 of the lift tower, designated 19, comes to rest.
  • the work platform no longer moves with respect to the tower.
  • it is horizontal and can be pivoted under the bridge after the lifting tower 4 has been lowered accordingly.
  • the additional web 8 extends. 6 shows this working position as seen from the pillar of the bridge.
  • the device is dismantled in the reverse order and with the direction of rotation in relation to the axis of rotation 12.
  • lampposts 17 can be bypassed in the assembled state of the device.
  • all three parallel levers are telescopic and individually detachable from the intermediate carrier 11.
  • the arrangement is such that two parallel levers alone can carry the bridge inspection device.
  • the figure shows how the parallel lever 13 is released from the intermediate carrier and is retracted as long as the chassis moves to the left until the lamppost 17 is between the parallel levers 13 and 18. In this position, the parallel lever 13 is coupled again and the parallel lever 18 is withdrawn, etc.
  • FIGS. 7 to 10 works with a portal frame that can be moved on castors, consisting of a horizontal upper part 20 and two side parts 21 and 22.
  • the upper part has two telescoping sections 23 and 24, each of which is firmly connected to a side part .
  • These sections can consist of telescopic tubes, lattice masts, a lattice work or the like.
  • a three-axle truck serves as a pure transport vehicle. On the one hand, it carries a structural unit consisting of intermediate support 11, slewing ring 10, guide member 9, lifting tower 4 and work platform 7 as described in the first example and in FIG. 1 and, on the other hand, the portal frame retracted to its shortest position.
  • Legs 25 equipped with castors are folded up at the four corners.
  • the unit is lower than the portal frame with the legs folded up.
  • the two side parts of the portal frame are designed differently.
  • the side part 21 forms a large opening, so that, according to FIG. 8, after the legs 25 have been unfolded, the portal frame stands on the roadway, in particular a bridge, and the truck can extend through the opening of the side part 21.
  • the further assembly process results from FIGS. 9 and 10.
  • the portal scaffold is first unloaded in the direction of travel, ie in the longitudinal direction of the bridge, and then rotated with the aid of its steering rollers (dash-dotted in FIG. 9) until it assumes a position transverse to the bridge. Now the truck also moves in the longitudinal direction of the bridge and thus parallel to the side wall 22 of the portal scaffold.
  • the horizontal, telescopically extendable arm 26 has. These are connected to the hinge eyes of the intermediate carrier 11. By raising the carriage mentioned on the side part 22, the assembly is lifted off the truck and the truck can move away. Now sections 23 and 24 of the portal scaffold upper part are moved apart until the side part 22 comes to rest on the edge of the bridge and the portal scaffold spans the entire street. If necessary, the arms 26 can also be extended further, so that the structural unit is raised above the bridge and initially still held horizontally on the portal frame. This is shown in FIG. 10. The further construction of the device takes place as described in the first example.
  • the device according to FIGS. 11 to 16 consists of a chassis in the form of a trailer 30, on which a turntable 31 is rotatably mounted a little behind the center about a vertical axis 32.
  • a weight 33 on the shorter end of the turntable 31 pointing forward and on the rear end a guide member 35 is rotatably mounted about a horizontal axis of rotation 36 by means of a turntable 34.
  • a lifting tower 37 loads on its corner spars provided with toothed racks move in the longitudinal direction.
  • a pinion is attached to the guide member 35.
  • a square corner segment 39 is rotatably mounted about an axis of rotation 40 by means of a further rotating ring 38, which extends in the direction of the central axis of the lifting tower.
  • a work bridge 41 and an additional bridge 42 pushed into it are fastened to the corner segment.
  • the bottom of the work platform, which can thus rotate in a horizontal plane around the lifting tower 37, is at the top in this transport position.
  • the lifting tower can be raised until its lower end almost reaches the guide member 35.
  • a further lifting tower segment 43 which also contains a rack section, at the bottom, for example by bolting.
  • a further lifting tower segment 44 can be attached, which is shown in FIG. 12.
  • the lift tower segments can be accommodated on the trailer 30 and carried to the construction site.
  • the additional web 42 can be extended so that the working web thus reaches its full length. Since the work platform floor is, as mentioned, at the top, provision is made according to FIG. 12 to attach foldable additional railings 45 and 46 to the work bridge 41 and to the additional bridge 42.
  • the work platforms can be climbed through the lifting tower 37 and the slewing ring 38.
  • the high-work platform constructed in this way according to FIG. B. for repairs to a gantry bridge or another bridge that spans or crosses the carriageway.
  • the direction in the horizontal is loaded as desired by rotation about the pivot axis 32 or the pivot axis 40.
  • the work platforms would be left in the starting position in the longitudinal direction of the trailer.
  • a parallel transverse movement is possible by rotating in opposite directions about the two axes 32 and 40.
  • the work platform can be moved parallel upwards along a curved tunnel wall.
  • the work platform is in this position at about the same height as the bridge (Fig. 15).
  • the lifting tower 37 is therefore lowered and supplemented with one or more lifting tower segments, if necessary.
  • the trailer 30 could also be a truck or other special vehicle.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

A device for seeing below bridges comprises an undercarriage (1), an intermediate carrier (11) mounted on the latter, a guide element (9) mounted on the intermediate carrier so as to rotate about a horizontal axis of rotation (12) and a hoisting tower (4) with four corner spars which is received by the guide element and can be displaced perpendicular to the axis of rotation of the latter. The guide element (9) has a flat shape and is slidingly engaged only with the two nearest corner spars. These corner spars are designed to support higher loads than the other two. The intermediate carrier (11) is preferably mounted on the undercarriage (1) by means of a lever parallelogram consisting of at least two levers (13, 14) which swivels about vertical axes.

Description

Die Erfindung betrifft eine Brückenuntersichtvorrichtung mit einem Fahrgestell, einem an dem Fahrgestell angebrachten Zwischenträger, einem an dem Zwischenträger um eine horizontale Drehachse drehbar gelagerten Führungsorgan, einem von dem Führungsorgan aufgenommenen, senkrecht zu dessen Drehachse verfahrbaren Hubturm mit vier Eckholmen, einem am Hubturm um dessen Längsmittelachse drehbar gelagerten Hubturmunterteil und einem an diesem angebrachten Arbeitssteg.The invention relates to a bridge underside device with a chassis, an intermediate support attached to the chassis, a guide member rotatably mounted on the intermediate support about a horizontal axis of rotation, a lifting tower accommodated by the guide member and movable vertically to its axis of rotation with four corner spars, and one on the lifting tower about its longitudinal central axis rotatably mounted lower part of the lift tower and a work platform attached to it.

Bei einer aus dem Dokument DE-A-3 305 384 bekannten Brückenuntersichtvorrichtung dieser Art ist der Zwischenträger ein auf dem Fahrgestell quer beweglicher Schlitten. Der Hubturm hat einen quadratischen Querschnitt. Das als Führungsschachtel bezeichnete Führungsorgan, das den Hubturm aufnimmt, schließt diesen ringsum ein. Nachteilig ist der hohe Raumbedarf, der das enge Zusammenklappen der Vorrichtung beim Transport erschwert, sowie die ungünstige Gewichtsverteilung infolge des symmetrischen Hubturmquerschnitts.In a bridge underside device of this type known from document DE-A-3 305 384, the intermediate carrier is a carriage which can move transversely on the chassis. The lifting tower has a square cross section. The guide element, known as the guide box, which receives the lifting tower, encloses it all around. The disadvantages are the high space requirement, which makes it difficult to close the device tightly during transport, and the unfavorable weight distribution due to the symmetrical lifting tower cross section.

Der Erfindung liegt die Aufgabe zugrunde, eine kompakte und vielseitig verwendbare selbstaufbauende Brückenuntersichtvorrichtung mit erhöhter Standfestigkeit vorzuschlagen.The invention has for its object to propose a compact and versatile self-assembling underside bridge device with increased stability.

Ausgehend von einer Vorrichtung der einleitend bezeichneten Art wird diese Aufgabe erfindungsgemäß dadurch gelöst, daß das Führungsorgan eine flache Form hat und nur mit den beiden ihm benachbarten Eckholmen des Hubturms in Gleiteingriff steht, und daß diese Eckholme auf eine höhere Belastbarkeit ausgelegt sind als die beiden übrigen Eckholme. An den belasteten Eckholmen können auch Zahnstangen angebracht sein, die zum Antrieb des Hubturmes mit einem Zahnstangenantrieb am Führungsorgan zusammenwirken. Durch diesen Vorschlag werden die Gewichte des Hubturms und des Führungsorgans in einem wesentlich höheren Made an der Brückenseite konzentriert, vor allem wenn die brückenfernen Eckholme und die Streben aus Leichtmetall bestehen.Starting from a device of the type described in the introduction, this object is achieved according to the invention in that the guide member has a flat shape and is in sliding engagement only with the two adjacent corner bars of the lifting tower, and that these corner bars are designed for a higher load capacity than the other two Corner pillars. Racks can also be attached to the loaded corner spars, which work together with a rack and pinion drive on the guide element to drive the lifting tower. With this proposal, the weights of the lifting tower and the guide member are concentrated in a much higher maggot on the bridge side, especially if the corner posts and the struts are made of light metal.

Vorzugsweise wird das Führungsorgan mittels eines Drehkranzes an dem Zwischenträger gelagert, der vorzugsweise ebenfalls flach und plattenförmig ist. Um den Hubturm bis nahe an sein freies Ende auszufahren, hat das Führungsorgan bezogen auf seine Drehachse vorzugsweise einen kürzeren zum freien Hubturmende und einen längeren zum Arbeitssteg weisenden Abschnitt.The guide member is preferably mounted on the intermediate carrier by means of a turntable, which is preferably also flat and plate-shaped. In order to extend the lifting tower close to its free end, the guide member preferably has a shorter section with respect to its axis of rotation to the free end of the lifting tower and a longer section facing the work platform.

Um beim Aufbau des Gerätes auf einer Straßenbrücke den Verkehr nicht zu gefährden, wird vorgeschlagen, daß der Zwischenträger mittels eines um lotrechte Achsen schwenkbaren Hebelparallelogramms aus wenigstens zwei Hebeln am Fahrgestell gelagert ist. Dadurch lädt sich die beim Transport zusammengeklappte Einheit aus Hubturm und Arbeitssteg parallel zu sich selbst über den Brückenrand hinaus heben und dann durch Schwenken um die horizontale Drehachse aufstellen. Vorzugsweise sind die Parallelhebel teleskopierbar. Es kann auch noch ein dritter, vorzugsweise etwas erhöht angeordneter Parallelhebel vorgesehen sein. Wenn diese drei Parallelhebel einzeln teleskopierbar und von dem Zwischenträger lösbar sind, lassen sich am Brückenrand angeordnete Säulen oder Masten durch alternierendes Zurückziehen der Parallelhebel mit aufgebauter Brückenuntersichtvorrichtung umfahren. Die Parallelhebel müssen im ausgeschwenkten Zustand nur einen so großen gegenseitigen Horizontalabstand haben, daß der betreffende Mast dazwischen Platz findet.In order not to endanger traffic when installing the device on a road bridge, it is proposed that the intermediate carrier be mounted on the chassis by means of a lever parallelogram that can be pivoted about vertical axes and consists of at least two levers. As a result, the unit, which is folded up during transport and consists of the lifting tower and the work platform, loads parallel to itself above the edge of the bridge and then swings around the horizontal Set up the axis of rotation. The parallel levers are preferably telescopic. A third, preferably slightly higher, parallel lever can also be provided. If these three parallel levers can be individually telescoped and detached from the intermediate carrier, columns or masts arranged on the edge of the bridge can be bypassed by alternately pulling back the parallel levers with the bridge underside device installed. In the swung-out state, the parallel levers only have to be so far apart from one another that the mast in question finds space between them.

Ein wesentlicher Vorteil dieser Bauart besteht auch darin, daß der Arbeitssteg aus einer zur Brücke parallelen Arbeitsstellung heraus an den Hubturm heranklappbar ist und dementsprechend mit dem Boden nach oben auf dem Hubturm liegend transportiert werden kann.A major advantage of this design is that the work platform can be folded out of the lift tower from a work position parallel to the bridge and can accordingly be transported lying on the lift tower with the floor up.

Insbesondere für innerstädtische Brücken, die auf ganzer Breite dem Verkehr zur Verfügung stehen müssen, wird vorgeschlagen, daß der Zwischenträger an der Schmalseite eines fahrbaren Portalgerüsts anbringbar ist. Es kann derselbe, sonst an den Parallelhebeln des Fahrgestells angelenkte Zwischenträger sein. Er wird statt dessen mit längenveränderbaren Auslegern des Portalgerüste verbunden, die zweckmäßigerweise an einem am Portalgerüst in Höhenrichtung verfahrbaren Schlitten angebracht sind. Zur Umfahrung von Laternenmasten o. dgl. können auch hier drei in horizontalen Abständen angeordnete, einzeln längenveränderbare und vom Zwischenträger lösbare Ausleger vorgesehen sein.In particular for inner-city bridges that must be available to traffic over their entire width, it is proposed that the intermediate girder be attachable to the narrow side of a mobile portal scaffold. It can be the same intermediate carrier that is otherwise articulated on the parallel levers of the chassis. Instead, it is connected to length-adjustable cantilevers of the portal scaffolds, which are expediently attached to a carriage that can be moved in the vertical direction on the portal scaffold. To bypass lampposts or the like, three cantilevers which are arranged at horizontal intervals and can be individually length-adjusted and detached from the intermediate carrier can also be provided here.

Ein weitergehender Vorschlag läuft darauf hinaus, auch das tragende Portal auf demselben Straßentransportfahrzeug mitzunehmen, wie die übrige Vorrichtung. Vorzugsweise ist das Portalgerüst horizontal und quer zur Durchfahrtsrichtung teleskopierbar und mit Lenkrollen versehen. Es hat an einer Schmalseite eine Öffnung für ein Straßenfahrzeug, auf welchem eine aus dem Zwischenträger, dem Führungsorgan, dem Hubturm und dem Arbeitssteg bestehende Baueinheit verladen ist. Zur zusätzlichen Aufnahme des Portalgerüsts auf diesem Straßenfahrzeug sind hierfür geeignete Verbindungselemente vorgesehen. An der anderen Schmalseite des Portalgerüsts, welche sich in der verladenen Stellung an der Fahrzeugrückseite befindet, sind die Aufnahmeeinrichtungen für den Zwischenträger und die übrigen Bauteile der Vorrichtung angebracht.A further proposal amounts to taking the load-bearing portal on the same road transport vehicle as the rest of the device. The portal frame is preferably horizontal and transverse to Direction of passage telescopic and provided with castors. It has an opening for a road vehicle on one narrow side, onto which a structural unit consisting of the intermediate carrier, the guide element, the lifting tower and the work platform is loaded. Suitable connecting elements are provided for this purpose in order to additionally accommodate the portal scaffolding on this road vehicle. On the other narrow side of the portal frame, which is in the loaded position on the rear of the vehicle, the receiving devices for the intermediate carrier and the other components of the device are attached.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung näher beschrieben. Im einzelnen zeigt

  • Fig. 1 die Seitenansicht einer auf ihrem Fahrgestell zum Straßentransport verladenen Brückenuntersichtvorrichtung,
  • Fig. 2 die Draufsicht der Vorrichtung nach Fig. 1,
  • Fig. 3 die Ansicht der Vorrichtung nach Fig. 1 in Fahrtrichtung,
  • Fig, 4 die Draufsicht der Vorrichtung nach Fig. 1 nach dem Ausschwenken der Parallelarme,
  • Fig. 5 eine Seitenansicht der Vorrichtung nach Fig. 1 auf der Brücke während des Aufbauvorgangs,
  • Fig. 6 eine Ansicht der Vorrichtung nach Fig. 1 in Brückenlängsrichtung im Betriebszustand,
  • Fig. 7 die Seitenansicht einer anderen Brückenuntersichtvorrichtung in der Verladestellung auf einem Straßentransportfahrzeug,
  • Fig. 8 die Vorrichtung wie Fig. 7 in kleinerem Maßstab zu Beginn des Aufbauvorgangs,
  • Fig. 9 eine Draufsicht im Maßstab wie Fig. 8 mit zwei weiteren Zwischenpositionen beim Aufbau,
  • Fig. 10 eine Draufsicht wie Fig. 9 mit einer weiteren Zwischenposition beim Aufbau der Vorrichtung nach Fig. 7,
  • Fig. 11 die Seitenansicht einer kombinierten Hoch- und Tiefarbeitsbühne in fahrbereiter Stellung für den Straßentransport,
  • Fig. 12 eine Ansicht der Vorrichtung nach Fig. 11 in Betriebsstellung als Hocharbeitsbühne,
  • Fig. 13 die Draufsicht der Vorrichtung nach Fig. 11 bei der Bereitstellung als Tiefarbeitsbühne,
  • Fig. 14 eine Seitenansicht dieser Vorrichtung in weiteren Zwischenstellungen,
  • Fig. 15 eine Seitenansicht in der Betriebsstellung als Tiefarbeitsbühne längs des Brückenrandes und
  • Fig. 16 eine Ansicht dieser Vorrichtung in Brückenlängsrichtung in Betriebsstellung als Untersichtvorrichtung.
Embodiments of the invention are described below with reference to the drawing. In detail shows
  • 1 is a side view of a bridge underside device loaded on its chassis for road transport,
  • 2 shows the top view of the device according to FIG. 1,
  • 3 shows the view of the device according to FIG. 1 in the direction of travel,
  • 4 shows the top view of the device according to FIG. 1 after the parallel arms have been pivoted out, FIG.
  • 5 is a side view of the device of FIG. 1 on the bridge during the assembly process,
  • 6 is a view of the device of FIG. 1 in the longitudinal direction of the bridge in the operating state,
  • 7 shows the side view of another bridge underside device in the loading position on a road transport vehicle,
  • 8 shows the device as in FIG. 7 on a smaller scale at the beginning of the assembly process,
  • 9 is a plan view on a scale like FIG. 8 with two further intermediate positions during assembly,
  • 10 is a plan view like FIG. 9 with a further intermediate position when assembling the device according to FIG. 7,
  • 11 is a side view of a combined high and low working platform in the ready position for road transport,
  • 12 is a view of the device of FIG. 11 in the operating position as a high-work platform,
  • 13 shows the top view of the device according to FIG. 11 when it is provided as a deep working platform,
  • 14 is a side view of this device in further intermediate positions,
  • Fig. 15 is a side view in the operating position as a deep working platform along the edge of the bridge and
  • Fig. 16 is a view of this device in the longitudinal direction of the bridge in the operating position as a bottom view device.

Die Vorrichtung nach den Figuren 1 bis 6 ist auf einem fünfachsigen Sattelauflieger aufgebaut, der zugleich als Transport- und Betriebsfahrgestell dient. Mit Hilfe der Luftdruck-Federungseinrichtung der drei mittleren Achsen wird das Chassis 1 beim Straßentransport so weit angehoben, daß sich die Räder 2 und 3 der ungefederten äußeren Achsen von der Fahrbahn abheben. Der Hubturm 4 hat ein drehbares Hubturmunterteil 5. An diesem ist um eine Klappachse 6 der Arbeitssteg 7 angelenkt, der einen teleskopierbaren Zusatzsteg 8 aufweist. Der Hubturm 4 ist an einem länglichen flachen Führungsorgan 9 mit seinen diesem Führungsorgan zugewandten Eckholmen längsbeweglich geführt. Dazu haben die verstärkten Holme ein entsprechendes Querschnittsprofil und im Falle eines Zahnstangenantriebs eine Zahnstange. Das Führungsorgan 9 ist mittels eines Drehkranzes 10 an einem flachen Zwischenträger 11 um eine horizontale Drehachse 12 drehbar gelagert. Es ist Vorsorge getroffen, daß eine Drehbewegung über mindestens 270° in beiden Richtungen möglich ist. Der Zwischenträger 11 ist mittels zweier Parallelhebel 13 und 14 am Chassis 1 gelagert. Die fahrgestellseitigen Gelenke befinden sich an einem Lagerbock 15. Die Gelenkachsen verlaufen lotrecht, so daß der Zwischenträger 11 und mit ihm sämtliche weiteren Teile in ihrer Transportstellung parallel zu sich selbst seitlich vom Chassis abgehoben werden können.The device according to Figures 1 to 6 is built on a five-axle semi-trailer, which also serves as a transport and operating chassis. With the help of the air pressure suspension device of the three central axles, the chassis 1 is raised so far during road transport that the wheels 2 and 3 of the unsprung outer axles stand out from the road. The lifting tower 4 has a rotatable lower part 5 of the lifting tower. The work bridge 7, which has a telescopic additional bridge 8, is articulated about a folding axis 6. The lifting tower 4 is guided in a longitudinally movable manner on an elongated flat guide member 9 with its corner spars facing this guide member. The reinforced bars have a corresponding cross-sectional profile and, in the case of a rack and pinion drive, a rack. The guide member 9 is rotatably mounted on a flat intermediate support 11 about a horizontal axis of rotation 12 by means of a turntable 10. Precautions have been taken to ensure that a rotational movement of at least 270 ° is possible in both directions. The intermediate carrier 11 is mounted on the chassis 1 by means of two parallel levers 13 and 14. The chassis-side joints are located on a bearing block 15. The joint axes run perpendicularly, so that the intermediate carrier 11 and with it all other parts can be lifted laterally from the chassis parallel to itself in their transport position.

Die vollzogene Ausladebewegung am Rand einer Brücke 16 zeigt Fig. 4. Im Gegensatz zu den vorhergehenden Figuren ist hier zur Demonstration des Umfahrens von Laternenmasten 17 o. dgl. am Rand der Brücke ein dritter Parallelhebel 18 gezeigt, der in der Mitte zwischen den beiden übrigen und etwas erhöht angeordnet ist. Durch Schwenken der Parallehebel um etwas mehr als 90° wurden die noch zusammengeklappten Vorrichtungsteile über den Rand der Brücke hinaus gehoben, wo sie sich zunächst noch in horizontaler Stellung befinden. Der Arbeitssteg 7 liegt oben und weist, wie auch Fig. 3 zeigt, mit seinem Boden nach oben.Fig. 4 shows the completed unloading movement at the edge of a bridge 16. In contrast to the previous figures, a third parallel lever 18 is shown here to demonstrate the avoidance of lampposts 17 or the like at the edge of the bridge the other two and is arranged slightly raised. By swiveling the parallel levers a little more than 90 °, the parts of the device that were still folded were raised beyond the edge of the bridge, where they are initially still in a horizontal position. The work platform 7 is at the top and, as also shown in FIG. 3, has its bottom up.

Betrachtet man die Anordnung nun gemäß Fig. 5 von der Brückenaußenseite her, so weist das Hubturmunterteil 5 zunächst nach links. Der Hubturm wird nun nach rechts gedreht (Pfeil in Fig. 5). Sobald er vertikal steht, hängt der Arbeitssteg 7 frei nach unten und löst sich bei der weiteren Drehbewegung vom Turm ab. Gemäß Fig. 5 hat der Turm bereits einen Winkel von 150° zurückgelegt. Sobald noch 30° zurückgelegt sind, kommt die mit 19 bezeichnete Kante des Arbeitsstegs am Hubturmunterteil 5 zur Anlage. Bei der weiteren 90°-Drehung bewegt sich der Arbeitssteg bezüglich des Turmes nicht mehr. Er steht schließlich horizontal und kann nach entsprechendem Absenken des Hubturms 4 unter die Brücke geschwenkt werden. Zum Schluß fährt noch der Zusatzsteg 8 aus. Diese Arbeitsposition zeigt Fig. 6 von dem Pfeiler der Brücke aus gesehen. Der Abbau der Vorrichtung verläuft in umgekehrter Reihenfolge und mit umgekehrter Drehrichtung bezüglich der Drehachse 12.If the arrangement is now viewed according to FIG. 5 from the outside of the bridge, the lower part of the lifting tower 5 initially points to the left. The lifting tower is now turned to the right (arrow in Fig. 5). As soon as it stands vertically, the work platform 7 hangs freely downwards and detaches from the tower during the further rotary movement. 5, the tower has already covered an angle of 150 °. As soon as 30 ° have been covered, the edge of the work platform on the lower part 5 of the lift tower, designated 19, comes to rest. With a further 90 ° rotation, the work platform no longer moves with respect to the tower. Finally, it is horizontal and can be pivoted under the bridge after the lifting tower 4 has been lowered accordingly. Finally, the additional web 8 extends. 6 shows this working position as seen from the pillar of the bridge. The device is dismantled in the reverse order and with the direction of rotation in relation to the axis of rotation 12.

Sofern gemäß Fig. 4 der dritte Parallelhebel 18 vorhanden ist, können im aufgebauten Zustand der Vorrichtung Laternenmasten 17 umfahren werden. Dazu ist weiter erforderlich, daß, wie Fig. 4 ebenfalls zeigt, alle drei Parallelhebel teleskopierbar und einzeln von dem Zwischenträger 11 lösbar sind. Die Anordnung ist so getroffen, daß zwei Parallelhebel allein die Brückenuntersichtvorrichtung tragen können. Die Figur zeigt, wie der Parallelhebel 13 vom Zwischenträger gelöst und zurückgezogen ist, solange das Fahrgestell sich so weit nach links bewegt, bis der Laternenmast 17 sich zwischen den Parallelhebeln 13 und 18 befindet. In dieser Stellung wird der Parallelhebel 13 wieder angekoppelt und der Parallelhebel 18 zurückgezogen usw.If the third parallel lever 18 is present according to FIG. 4, lampposts 17 can be bypassed in the assembled state of the device. This also requires that, as also shown in FIG. 4, all three parallel levers are telescopic and individually detachable from the intermediate carrier 11. The arrangement is such that two parallel levers alone can carry the bridge inspection device. The figure shows how the parallel lever 13 is released from the intermediate carrier and is retracted as long as the chassis moves to the left until the lamppost 17 is between the parallel levers 13 and 18. In this position, the parallel lever 13 is coupled again and the parallel lever 18 is withdrawn, etc.

Die in den Figuren 7 bis 10 gezeigte Vorrichtung arbeitet mit einem auf Lenkrollen verfahrbaren Portalgerüst, bestehend aus einem horizontalen Oberteil 20 und zwei Seitenteilen 21 und 22. Das Oberteil hat zwei ineinander teleskopierbare Abschnitte 23 und 24, von denen jeder mit einem Seitenteil fest verbunden ist. Diese Abschnitte können aus Teleskoprohren, Gittermasten, einem Gitterwerk o. dgl. bestehen. Ein dreiachsiger LKW dient als reines Transportfahrzeug. Er trägt einerseits eine Baueinheit aus Zwischenträger 11, Drehkranz 10, Führungsorgan 9, Hubturm 4 und Arbeitssteg 7 wie bei dem ersten Beispiel und in Fig. 1 beschrieben und andererseits das auf seine kürzeste Stellung eingefahrene Portalgerüst. An den vier Ecken sind mit Lenkrollen ausgestattete Beine 25 hochgeklappt. Die Baueinheit ist niedriger als das Portalgerüst bei hochgeklappten Beinen. Die beiden Seitenteile des Portalgerüsts sind unterschiedlich gestaltet. Das Seitenteil 21 bildet eine große Öffnung, so daß gemäß Fig. 8 nach dem Ausklappen der Beine 25 das Portalgerüst auf der Fahrbahn, insbesondere einer Brücke steht und der LKW durch die Öffnung des Seitenteils 21 ausfahren kann. Der weitere Aufbauvorgang ergibt sich aus den Fig. 9 und 10. Das Portalgerüst wird zunächst in Fahrtrichtung, d. h. in Brückenlängsrichtung abgeladen und anschließend mit Hilfe seiner Lenkrollen gedreht (strichpunktiert in Fig. 9) bis es eine Stellung quer zur Brücke einnimmt. Nun fährt der LKW ebenfalls in Brückenlängsrichtung und damit parallel an die Seitenwand 22 des Portalgerüsts heran. An diesem Seitenteil ist ein auf und abbewegbarer Schlitten angebracht, der horizontale, teleskopisch ausfahrbare Arme 26 aufweist. Diese werden mit den Gelenkaugen des Zwischenträgers 11 verbunden. Durch Hochfahren des erwähnten Schlittens am Seitenteil 22 wird die Baueinheit vom LKW abgehoben und dieser kann wegfahren. Nun werden die Abschnitte 23 und 24 des Portalgerüst-Oberteils auseinander gefahren bis das Seitenteil 22 am Brückenrand zu stehen kommt und das Portalgerüst damit die ganze Straße überspannt. Falls erforderlich können auch noch die Arme 26 weiter ausgefahren werden, so daß die Baueinheit über die Brücke hinaus gehoben und zunächst noch horizontal an dem Portalgerüst gehalten ist. Dies zeigt Fig. 10. Der weitere Aufbau der Vorrichtung vollzieht sich wie beim ersten Beispiel beschrieben.The device shown in FIGS. 7 to 10 works with a portal frame that can be moved on castors, consisting of a horizontal upper part 20 and two side parts 21 and 22. The upper part has two telescoping sections 23 and 24, each of which is firmly connected to a side part . These sections can consist of telescopic tubes, lattice masts, a lattice work or the like. A three-axle truck serves as a pure transport vehicle. On the one hand, it carries a structural unit consisting of intermediate support 11, slewing ring 10, guide member 9, lifting tower 4 and work platform 7 as described in the first example and in FIG. 1 and, on the other hand, the portal frame retracted to its shortest position. Legs 25 equipped with castors are folded up at the four corners. The unit is lower than the portal frame with the legs folded up. The two side parts of the portal frame are designed differently. The side part 21 forms a large opening, so that, according to FIG. 8, after the legs 25 have been unfolded, the portal frame stands on the roadway, in particular a bridge, and the truck can extend through the opening of the side part 21. The further assembly process results from FIGS. 9 and 10. The portal scaffold is first unloaded in the direction of travel, ie in the longitudinal direction of the bridge, and then rotated with the aid of its steering rollers (dash-dotted in FIG. 9) until it assumes a position transverse to the bridge. Now the truck also moves in the longitudinal direction of the bridge and thus parallel to the side wall 22 of the portal scaffold. On this side part there is a slide that can be moved up and down, the horizontal, telescopically extendable arm 26 has. These are connected to the hinge eyes of the intermediate carrier 11. By raising the carriage mentioned on the side part 22, the assembly is lifted off the truck and the truck can move away. Now sections 23 and 24 of the portal scaffold upper part are moved apart until the side part 22 comes to rest on the edge of the bridge and the portal scaffold spans the entire street. If necessary, the arms 26 can also be extended further, so that the structural unit is raised above the bridge and initially still held horizontally on the portal frame. This is shown in FIG. 10. The further construction of the device takes place as described in the first example.

Die Vorrichtung nach den Figuren 11 bis 16 besteht aus einem Fahrgestell in Form eines Anhängers 30, auf dem ein Drehschemel 31 ein wenig hinter der Mitte um eine vertikale Achse 32 drehbar gelagert ist. An dem nach vorne weisenden kürzeren Ende des Drehschemels 31 befindet sich ein Gewicht 33 und am hinteren Ende ist mittels eines Drehkranzes 34 ein Führungsorgan 35 um eine horizontale Drehachse 36 drehbar gelagert. In dem Führungsorgan 35 lädt sich ein Hubturm 37 an seinen mit Zahnstangen versehenen Eckholmen in Längsrichtung verfahren. An dem Führungsorgan 35 ist ein Zahntrieb angebracht. Am oberen Ende des Hubturms 37 ist mittels eines weiteren Drehkranzes 38 ein quadratisches Ecksegment 39 um eine Drehachse 40 drehbar gelagert, die sich in Richtung der Hubturmmittelachse erstreckt. An dem Ecksegment ist ein Arbeitssteg 41 und ein in diesen eingeschobener Zusatzsteg 42 befestigt. Der Boden des Arbeitssteges, der sich somit in horizontaler Ebene um den Hubturm 37 drehen kann, befindet sich in dieser Transportstellung ganz oben.The device according to FIGS. 11 to 16 consists of a chassis in the form of a trailer 30, on which a turntable 31 is rotatably mounted a little behind the center about a vertical axis 32. There is a weight 33 on the shorter end of the turntable 31 pointing forward and on the rear end a guide member 35 is rotatably mounted about a horizontal axis of rotation 36 by means of a turntable 34. In the guide member 35, a lifting tower 37 loads on its corner spars provided with toothed racks move in the longitudinal direction. A pinion is attached to the guide member 35. At the upper end of the lifting tower 37, a square corner segment 39 is rotatably mounted about an axis of rotation 40 by means of a further rotating ring 38, which extends in the direction of the central axis of the lifting tower. A work bridge 41 and an additional bridge 42 pushed into it are fastened to the corner segment. The bottom of the work platform, which can thus rotate in a horizontal plane around the lifting tower 37, is at the top in this transport position.

Zunächst soll die Verwendung der Vorrichtung für Arbeiten oberhalb der Fahrbahn erläutert werden. Schon in der Transportstellung nach Fig. 11 oder bei um 90° gedrehtem Drehschemel gemäß Fig. 12 kann der Hubturm so weit hochgefahren werden, bis sein unteres Ende das Führungsorgan 35 nahezu erreicht. In dieser Stellung ist es möglich, ein weiteres Hubturmsegment 43, das auch einen Zahnstangenabschnitt enthält, unten anzusetzen, beispielsweise durch Verbolzen. Nach Hochfahren um die Höhe dieses Segments kann ein weiteres Hubturmsegment 44 angesetzt werden, was in Fig. 12 dargestellt ist. Die Hubturmsegmente lassen sich auf dem Anhänger 30 unterbringen und zur Baustelle mitführen. Wenn die erforderliche Arbeitshöhe erreicht ist, läßt sich der Zusatzsteg 42 ausfahren, so daß der Arbeitssteg damit seine volle Länge erreicht. Da sich der Arbeitsstegboden, wie erwähnt, oben befindet, ist gemäß Fig. 12 vorgesehen, klappbare Zusatzgeländer 45 und 46 am Arbeitssteg 41 und am Zusatzsteg 42 anzubringen. Die Arbeitsstege können durch den Hubturm 37 und den Drehkranz 38 hindurch erstiegen werden.First, the use of the device for work above the carriageway will be explained. Already in the 11 or with the turntable rotated by 90 ° according to FIG. 12, the lifting tower can be raised until its lower end almost reaches the guide member 35. In this position, it is possible to attach a further lifting tower segment 43, which also contains a rack section, at the bottom, for example by bolting. After lifting up the height of this segment, a further lifting tower segment 44 can be attached, which is shown in FIG. 12. The lift tower segments can be accommodated on the trailer 30 and carried to the construction site. When the required working height is reached, the additional web 42 can be extended so that the working web thus reaches its full length. Since the work platform floor is, as mentioned, at the top, provision is made according to FIG. 12 to attach foldable additional railings 45 and 46 to the work bridge 41 and to the additional bridge 42. The work platforms can be climbed through the lifting tower 37 and the slewing ring 38.

Die so aufgebaute Hocharbeitsbühne nach Fig. 12 kann z. B. bei Reparaturen an einer Schilderbrücke oder einer anderen, die Fahrbahn quer oder schräg überspannenden Brücke verwendet werden. Die Richtung in der Horizontalen lädt sich durch Drehung um die Drehschemelachse 32 oder die Drehachse 40 beliebig einstellen. In Tunnels würde man die Arbeitsstege in der Ausgangsstellung in Anhängerlängsrichtung belassen. Eine parallele Querbewegung ist durch gegensinnige Drehungen um die beiden Achsen 32 und 40 möglich. Unter Hinzunahme der Vertikalbewegung des Hubturms 37 läßt sich der Arbeitssteg an einer gewölbten Tunnelwand parallel nach oben entlang bewegen.The high-work platform constructed in this way according to FIG. B. for repairs to a gantry bridge or another bridge that spans or crosses the carriageway. The direction in the horizontal is loaded as desired by rotation about the pivot axis 32 or the pivot axis 40. In tunnels, the work platforms would be left in the starting position in the longitudinal direction of the trailer. A parallel transverse movement is possible by rotating in opposite directions about the two axes 32 and 40. With the addition of the vertical movement of the lifting tower 37, the work platform can be moved parallel upwards along a curved tunnel wall.

Der Aufbau der Vorrichtung für Arbeiten unter einer Brücke 47 wird im folgenden anhand der Figuren 13 bis 16 beschrieben. Gemäß Fig. 13 ist der Anhänger 30 parallel zum Rand der Brücke herangefahren. Der Drehschemel 31 wurde quer gestellt, so daß er über den Brückenrand hinausragt und der Arbeitssteg 41, 42 wurde bezüglich des Hubturms 37 ebenfalls um 90° gedreht, so daß er jetzt außerhalb und oberhalb der Brücke 47 parallel zu dieser steht. Nun erfolgt die für diese Vorrichtung eigenartige Drehbewegung der aus Hubturm 37 und Arbeitsstegen 41, 42 bestehenden steifen Winkelkonfiguration um 180°. Dies zeigt Fig. 14. Die Ausgangsstellung gem. Fig. 13 ist gestrichelt eingezeichnet und die nach der Drehung erhaltene Stellung voll ausgezogen.The structure of the device for working under a bridge 47 is described below with reference to FIGS. 13 to 16 described. 13, the trailer 30 has moved parallel to the edge of the bridge. The turntable 31 was placed transversely so that it protrudes beyond the edge of the bridge and the work platform 41, 42 was also rotated by 90 ° with respect to the lifting tower 37, so that it is now outside and above the bridge 47 parallel to it. Now, the peculiar rotary movement for this device of the rigid angular configuration consisting of lifting tower 37 and work bars 41, 42 takes place through 180 °. This is shown in FIG. 14. Fig. 13 is shown in broken lines and the position obtained after the rotation is fully extended.

Der Arbeitssteg befindet sich in dieser Stellung auf etwa gleicher Höhe wie die Brücke (Fig. 15). Der Hubturm 37 wird deshalb nach unten gefahren und mit einem oder mehreren Hubturmsegmenten, soweit erforderlich, ergänzt.The work platform is in this position at about the same height as the bridge (Fig. 15). The lifting tower 37 is therefore lowered and supplemented with one or more lifting tower segments, if necessary.

In einer solchen Stellung können die häufigen Pflegearbeiten am Kappenrand einer Brücke bestens erledigt werden. Sobald der Arbeitssteg durch weitere Verlängerung des Hubturms tief genug steht, kann er unter die Brücke geschwenkt und gewünschtenfalls durch Ausfahren des Zusatzsteges 42 verlängert werden. Dies zeigt Fig. 16 in Brückenlängsrichtung gesehen.In such a position, the frequent maintenance work on the edge of the cap of a bridge can be done perfectly. As soon as the work platform is deep enough by further lengthening the lifting tower, it can be pivoted under the bridge and, if desired, extended by extending the additional web 42. 16 shows this in the longitudinal direction of the bridge.

Die Bewegungen zurück in die Transportstellung nach Fig. 11 verlaufen in umgekehrter Reihenfolge. Selbstverständlich könnte der Anhänger 30 auch ein LKW oder ein anderes Spezialfahrzeug sein.

Figure imgb0001
The movements back into the transport position according to FIG. 11 run in reverse order. Of course, the trailer 30 could also be a truck or other special vehicle.
Figure imgb0001

Claims (13)

  1. Apparatus for inspecting the underneath of bridges with a chassis (1; 30), an intermediate support (11; 31) located on the chassis, a guide member (9; 35) mounted to rotate about a horizontal axis of rotation (12; 36) on the intermediate support, a lifting tower (4; 37) with four corner spars, received by the guide member and able to travel perpendicular to its axis of rotation, a lifting tower lower part (5; 39) mounted to rotate about its longitudinal central axis on the lifting tower and a working walkway (7; 41) located on the latter, characterised in that the guide member (9; 35) has a flat shape and is in sliding engagement solely with the two corner spars of the lifting tower (4; 37) adjacent thereto, and that these corner spars are designed for higher load-carrying capacity than the two remaining corner spars.
  2. Apparatus according to Claim 1, characterised in that the guide member (9; 35) is mounted by means of a turn-table (10; 34) on the intermediate support (11; 31).
  3. Apparatus according to Claim 2, characterised in that with respect to its axis of rotation (12), the guide member (9) comprises a shorter section pointing towards the free end of the lifting tower and a longer section pointing towards the working walkway (7).
  4. Apparatus according to Claim 1, characterised in that the lifting tower (4; 37) can be moved by means of a rack and pinion drive located on the guide member (9; 35), which drive cooperates with at least one rack located on the lifting tower.
  5. Apparatus according to Claim 1, characterised in that the intermediate support (11) is mounted on the chassis (1) by means of a lever parallelogram able to tilt about vertical axes, consisting of at least two levers (13, 14).
  6. Apparatus according to Claim 5, characterised in that the parallel levers can be telescoped.
  7. Apparatus according to Claim 5, characterised in that three parallel levers (13, 14, 18) are provided, which can be telescoped individually and can be detached from the intermediate support (11).
  8. Apparatus according to Claim 1, characterised in that the working walkway (7) can be folded up onto the lifting tower (4) from a working position parallel to the bridge and can be conveyed lying on this lifting tower with the base pointing upwards.
  9. Apparatus according to Claim 1, characterised in that the intermediate support (11) can be located on the narrow side (22) of a travelling gantry scaffolding.
  10. Apparatus according to Claim 9, characterised in that the intermediate support (11) is connected to the gantry scaffolding by means of cantilevers (26) of variable length.
  11. Apparatus according to Claim 10, characterised in that three cantilevers are provided arranged at horizontal distances apart, whereof the length may be varied individually and which can be released from the intermediate support.
  12. Apparatus according to Claim 10, characterized in that the cantilevers (26) of variable length are located on a carriage able to travel in the vertical direction on the gantry scaffolding.
  13. Apparatus according to Claim 9, characterised in that the gantry scaffolding can be telescoped horizontally and at right angles to the direction of travel and is provided with guide rollers and that on one narrow side (21) it comprises an opening for a road vehicle, on which a structural unit consisting of the intermediate support (11), the guide member (9), the lifting tower (4) and the working walkway (7) is loaded, and that connecting members for additionally receiving the gantry scaffolding on this road vehicle are provided.
EP90904744A 1989-03-25 1990-03-23 Device for inspecting the underside of bridges Expired - Lifetime EP0464062B1 (en)

Priority Applications (1)

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AT90904744T ATE86324T1 (en) 1989-03-25 1990-03-23 BRIDGE UNDERVIEW DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8903771U 1989-03-25
DE8903771U DE8903771U1 (en) 1989-03-25 1989-03-25 Bridge underside inspection device

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EP0464062A1 EP0464062A1 (en) 1992-01-08
EP0464062B1 true EP0464062B1 (en) 1993-03-03

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EP (1) EP0464062B1 (en)
JP (1) JP3022988B2 (en)
AU (1) AU5282690A (en)
DE (2) DE8903771U1 (en)
WO (1) WO1990011407A1 (en)

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DE3636020A1 (en) * 1986-10-23 1988-04-28 Alfons Moog Self-erecting arrangement for inspecting bridges from below
DE3723925A1 (en) * 1987-07-20 1989-02-02 Alfons Moog WORKSTAIR, ESPECIALLY FOR BRIDGE LOWER VIEWING DEVICES
DE3824921C2 (en) * 1988-07-22 1997-07-31 Alfons Moog Bridge underride device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107503286A (en) * 2017-08-10 2017-12-22 中国建筑第四工程局有限公司 A kind of symmetrical jacking self-compacting type concrete tubular arch construction technology

Also Published As

Publication number Publication date
EP0464062A1 (en) 1992-01-08
US5318149A (en) 1994-06-07
DE59000988D1 (en) 1993-04-08
JP3022988B2 (en) 2000-03-21
JPH04504289A (en) 1992-07-30
DE8903771U1 (en) 1990-07-26
AU5282690A (en) 1990-10-22
WO1990011407A1 (en) 1990-10-04

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