EP0156304B1 - Dispositif pour l'inspection des parties inférieures des ponts - Google Patents

Dispositif pour l'inspection des parties inférieures des ponts Download PDF

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Publication number
EP0156304B1
EP0156304B1 EP85103282A EP85103282A EP0156304B1 EP 0156304 B1 EP0156304 B1 EP 0156304B1 EP 85103282 A EP85103282 A EP 85103282A EP 85103282 A EP85103282 A EP 85103282A EP 0156304 B1 EP0156304 B1 EP 0156304B1
Authority
EP
European Patent Office
Prior art keywords
bridge
tower
underside
chassis
viewing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP85103282A
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German (de)
English (en)
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EP0156304A2 (fr
EP0156304A3 (en
Inventor
Alfons Moog
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT85103282T priority Critical patent/ATE47176T1/de
Publication of EP0156304A2 publication Critical patent/EP0156304A2/fr
Publication of EP0156304A3 publication Critical patent/EP0156304A3/de
Application granted granted Critical
Publication of EP0156304B1 publication Critical patent/EP0156304B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
    • E01D19/106—Movable 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 an operating chassis standing on the bridge and movable along the edge of the bridge, and a lifting and lowering lifting tower held and carried by the latter, which extends downwards past the edge of the bridge and attached to the lower end of which a work platform projecting under the bridge is.
  • Such devices are used instead of scaffolding or lifting lifts in the inspection or renovation of concrete bridges in particular to get to the underside of the bridge.
  • Known bridge underside devices for example according to DE-OS 33 05 384, have a box-like ring construction which comprises the lifting tower and which projects from the operating chassis beyond the edge of the bridge and holds the lifting tower and guides it in its lifting and lowering movement. Accordingly, the entire length of the lifting tower must be particularly rigid and thus heavy.
  • the lifting drive usually a hydraulic working cylinder, is arranged in the lifting tower.
  • this known construction is relatively heavy.
  • the invention has for its object to provide a light bridge underside device that loads the cap area (cantilevered edge area) of the bridge less in weight and also allows to overcome the high soundproofing walls running along the bridge edge.
  • the operating chassis has a guide tower located on the inside of the edge barrier of the bridge and that the lifting tower is guided up and down on the guide tower by means of supporting members projecting over the edge barrier.
  • the guide tower is located on the bridge within the perimeter barrier, e.g. B. the bridge railing, so that its weight does not generate an outward tilting moment.
  • Heavy I-profile rails are preferred for guiding, which are weight-related.
  • the usually very heavy hydraulic cylinder for lifting drive can be arranged on the guide tower and thus on the bridge.
  • the lifting tower can be so long (high) that in the operating position (work platform swung under the bridge) the bottom support elements reach over the soundproof wall so that it does not form an obstacle during work.
  • a floor can be provided in the area of the supporting members, so that access to the work platform can be made easily through the guide tower upwards, over this floor and through the lifting tower downwards.
  • the lifting tower can also be dimensioned more easily because the forces are not introduced at changing locations, but at the same location via the supporting members.
  • the bridge underside device can be constructed using a crane.
  • the service chassis be designed as a transport vehicle suitable for transporting the entire bridge inspection device over longer distances and have a turntable that can be rotated about a vertical axis which the guide tower by a horizontal, in the. Operating position in the longitudinal axis of the bridge is pivotally mounted.
  • the transport vehicle can be a trailer or a truck, each of which is parked in the longitudinal direction near the edge of the bridge.
  • the transport vehicle can be a trailer or a truck, each of which is parked in the longitudinal direction near the edge of the bridge.
  • Rail cars can be very heavy, e.g. B. 60 to, so that the stability of the device is guaranteed.
  • railway bridges are usually narrow.
  • the turntable can be equipped with support rollers that can be lowered onto the bridge surface and run in the longitudinal direction of the bridge, the axes of which cross the swivel axis of the guide tower perpendicularly.
  • the chassis of the transport vehicle can also have cross arms provided with corresponding support rollers.
  • these booms can be height-adjustable or foldable and can be arranged on both sides of the vehicle.
  • a further improvement of this construction is that the turntable is arranged on a cross slide that is movable horizontally and transversely to the direction of travel with respect to the vehicle chassis.
  • the bridge underside device can be adjusted precisely in relation to the bridge edge in the transverse direction of the bridge without having to maneuver the transport vehicle.
  • the changing distance from railings, guardrails or the like from the edge of the bridge can thus be taken into account.
  • the cross slide will be placed in a stable guide and driven by means of a hydraulic cylinder.
  • the adjustment range can e.g. B. 0.5 m on both sides.
  • the guide tower is pivotally mounted on the operating chassis about a horizontal axis and has a turntable on its lower side in the horizontal transport position, which is rotatably connected to a transport chassis, the turntable axis being perpendicular to the guide tower and perpendicular to the standing surface of the Transport chassis extends.
  • the transport chassis can in particular be a four-wheel trailer.
  • Another preferred embodiment, also with sliding frame on the guide tower up and down is that three parallelogram frames are arranged on the sliding frame, each having a plurality of superposed, up and down swiveling arms, which are connected to each other by a vertically arranged articulated bracket and by means of a rotary actuator. can be actuated, and that the arms can be connected to the lifting tower with the aid of plug-in coupling parts.
  • the swivel arms of one of the three frame levels can be released without any risk to stability.
  • the coupling process takes place here with the help of the swivel drive.
  • the arms are coupled to the lifting tower in the horizontal position and released in the pivoted down position. They each give space for the mast to drive past.
  • this construction has the advantage that the distance between the lifting tower and the guide tower can be varied if desired by the common inclination of all pivot arms. This can be of particular importance in road transport because it is possible in this way to reduce the overall height of the bridge inspection device loaded for transport.
  • two pivoting frames are pivotally mounted about vertical axes on the sliding frame of the guide tower as supporting members, each of which can carry the lifting tower alone.
  • the operation of such a device is easier because the operating chassis only has to stop once in order to couple one swivel frame and to release the other.
  • the direction of movement of the coupling elements is horizontal. It can therefore be advantageous to give the coupling members a limited height adjustment, for example driven by short hydraulic cylinders, for easy insertion and locking of the coupling members on at least one swivel frame.
  • a safety control device which prevents the simultaneous actuation of all the support members and prevents the separation of further support members as long as one support member is disconnected.
  • the bridge underside device according to FIGS. 1 to 7 uses a three-axle truck 1 as a combined operating and transport chassis. On its chassis 2 there is a turntable 3, the axis of rotation of which is designated 4.
  • This guide tower 8 is pivoted about a horizontal axis 9 on the turntable 3
  • the towers and the work platform consist of a lattice structure, for. B. made of aluminum.
  • the sliding carriage 7 consists of four rigidly connected support arms 10, the gripping hooks 11 (FIG. 5) of which engage in corresponding hook eyelets 12 on the lifting tower 6.
  • the sliding carriage 7 is guided so that it can be moved in two I-shaped rails 14 of the guide tower 8 by means of rollers 13.
  • the drive is formed by a hydraulic telescopic cylinder 15 attached to the outside of the guide tower.
  • the lifting tower 6 is divided into an upper part 16 and a lower part 17, which are connected to one another by a turntable 18, the axis of which is aligned with the axis of the tower.
  • the drive of the slewing ring is not shown.
  • the work platform 5 consists of a main web 19 which is pivotably articulated about an axis 20 on the lower part 17 of the lifting tower and an additional web 21 which can be telescoped in the longitudinal direction. From the tabs 22 attached to the lower part 17, two hydraulic cylinders extended by tubes 23 extend to the end of the main web 19.
  • the two webs have a U-shaped cross section and therefore include the lifting tower 6 in the folded state.
  • the bridge underside device further comprises two triangular bent swivel arms 24 (FIG. 6) which are articulated on the turntable 3 so as to be pivotable about vertical axes 25.
  • the axes of rotation are formed by stable hinges stiffened with triangular support walls 26.
  • Two gripping hooks 27 are arranged on the swivel arms 24, which can grip the lifting tower 6 on lateral cross bars 28.
  • two extension rails 29 (FIG. 4) which can be pulled out laterally from the chassis 2 and on which support legs 30 are hinged are used.
  • the support legs are provided with roll rolls 31 which run parallel to the truck 1.
  • a slow drive for the movement of the assembled device on the bridge can be installed in the truck or act on the support rollers 31.
  • FIGS. 3 and 4 show the so-called cap area of a bridge 32 in cross section.
  • a bridge pier 33 is indicated.
  • a railing 34 is shown in FIG. 2 and a soundproof wall 35 is shown in FIG. 3 as examples of edge barriers. 4 and 5, on the other hand, a mast 36 is shown in the same place, which carries a lamp housing 37 for street lighting. It is explained with the aid of FIGS. 6 and 7 how the bridge underside device can drive past such masts in the assembled state.
  • Fig. 3 it is indicated that the turntable 3 can be mounted on a cross slide 39 which can be adjusted within the vehicle width by means of a hydraulic cylinder.
  • a cross slide 39 which can be adjusted within the vehicle width by means of a hydraulic cylinder.
  • the structure of the bridge underside device is as follows: The truck 1 in the transport state acc. Fig. 1 moves parallel to the edge of the bridge. First, the support rollers 31 are positioned between the truck and the edge barrier. The boom rails 29 now serve as support for the turntable 3, which is rotated 90 ° into the position shown in FIG. 2. By means of two hydraulic drive cylinders 38, which are articulated on the turntable 3 and on the other hand on the guide tower 8, the guide tower with all attachments and superstructures is pivoted up about the pivot axis 9 with respect to the turntable. This construction phase must take place at a point on the bridge where the edge barrier is not too high.
  • the lifting tower 6 can be moved with the work platform 5 on the guide tower a little way beyond the edge of the bridge.
  • An intermediate position with an inclination of approximately 45 ° is indicated by dash-dotted lines in FIG. 2.
  • FIG. 3 shows the position of the bridge underside device from the viewing direction as in FIG. 2 after the guide tower 8 has been erected.
  • the lifting tower 6 is held outside the bridge edge on the guide tower and can now be lowered.
  • a possibly existing cross slope of the bridge can be compensated for by measuring the swivel angle of the guide tower 8 to somewhat more or less than 90 °.
  • the work platform 5 is folded down, namely in that the built-in in the tubes 23 Lift cylinders are extended.
  • Fig. 3 shows the work platform in an inclined position.
  • the lifting tower 6 is lowered by retracting the telescopic cylinder 15 and the lower part 17 of the lifting tower together with the work platform on the slewing ring 18 is rotated by 180 °.
  • the work platform 5 thereby pivots under the bridge, which is shown in FIG. 4.
  • the additional web 21 can be extended to the right.
  • the work platform is swiveled out parallel to the bridge by means of the turntable 18 and swung in again behind the pillar.
  • the height of the bridge box how high the soundproof wall 35 may be.
  • Lower bridge boxes allow higher soundproof walls and vice versa.
  • the working height between the bottom of the work platform 5 and the lower surface of the bridge box can be set as desired on the telescopic cylinder 15.
  • the device is highly resilient; the weight of the guide tower 8 and the truck 1 guarantee that no dangerous tilting moments occur even when the work platform is pivoted outwards in the construction phase (FIG. 3).
  • FIGS. 4 to 7 The following description of the mode of operation of those parts of the bridge underside device, which makes it possible to drive past masts, makes particular reference to FIGS. 4 to 7.
  • the device moves in the direction of the arrow towards the edge of the bridge along towards the masts 36 (Fig. 7).
  • the lifting tower 6 and the guide tower 8 are connected to one another by the sliding carriage 7.
  • the lifting tower hangs in the four gripping hooks 11 of the support arms 10.
  • the two swivel arms 24 are folded forward from the transport position into a middle waiting position, but only to the extent that at least the left swivel arm does not impede the approach to the mast 36.
  • the device moves into the position shown in solid lines in FIG. 7.
  • the mast is now immediately in front of the sliding carriage 7.
  • the travel drive stops and the lifting tower 6 is raised so far that the swivel arms 24 with their Gripping hook 27 can grip from the side under the cross bars 28 of the lifting tower.
  • This position of the swivel arms is shown in FIGS. 5 and 7.
  • the lifting tower is set back a little by means of the sliding carriage so that the gripping hooks 27 engage the cross bars and the swivel arms take on the full weight of the lifting tower 6 and the work platform 5.
  • the sliding carriage 7 moves further downward, however, so that its gripping hooks 11 detach from the hook eyelets 12.
  • the guide tower 8 is tilted back slightly, as shown in FIG. 5, and in this position the sliding carriage 7 can be moved higher, the lower support arms 10 with their gripping hooks coming past the lower hook eyelets 12.
  • the support arms 10 of the slide carriage are no longer an obstacle to the further journey, so that the device can be brought into the position shown in dash-dot lines in FIG. 7.
  • the mast is now beyond the two towers but still within the space enclosed by the swivel arms 24.
  • the sliding carriage 7 is lowered again, the guide tower 8 is brought into the vertical and the sliding carriage is coupled to the lifting tower 6 again by starting up again.
  • the lifting tower is also raised a little way so that the cross bars 28 can be released from the gripping hooks 27 and the two swivel arms 24 can be folded back into the position according to FIG. 6 or the transport position.
  • the swivel arms 24 are preferably actuated by means of hydraulic lifting cylinders (not shown).
  • a hydraulic or electrical safety control device ensures that the coupling and decoupling processes take place in the manner described. In particular, it is ensured that the two swivel arms can only be actuated together and only at a certain height of the lifting tower, in which the cross bars 28 are located just above the gripping hooks 27. Otherwise, a malfunction is already ruled out in that the lifting tower 6 can only be uncoupled from the sliding carriage 7 in that it rests on the swivel arms 24. Conversely, the swivel arms can only be released if the lifting tower 6 hangs in the gripping hook 11 of the sliding carriage.
  • FIGS. 8 and 9 Another construction for driving past a mast is sketched in FIGS. 8 and 9.
  • the sliding carriage here has the shape of a sliding sleeve 40 surrounding the guide tower 8 with lateral widenings.
  • Each consists of two arms 43 and 44 which are pivotably mounted about horizontal axes 41 and 42 and which are connected to one another by a vertical joint bracket 45.
  • Each parallelogram frame can be switched between a carrying position with horizontally extended arms and a rest position with arms that are inclined downwards by means of a lifting cylinder 46 that engages the upper arm.
  • the lifting tower 6 has laterally protruding brackets 47, which make it possible to arrange a total of six hook eyelets 48 in pairs in the longitudinal direction of the bridge so that they can cooperate with the hooks provided on the arms of the parallelogram frame.
  • the arrangement is such that two parallelogram frames, i. H. four arms, carry the lift tower 6 and can absorb all occurring moments.
  • the device passes the mast designated here by 49 by alternately lowering the parallelogram frame.
  • the movement takes place in In the direction of the arrow, the arms 43, 44 are first lowered and the device is moved until the mast is in the first chamber. After coupling the arms 43 and 44, the arms 43 'and 44' are lowered. Now you continue to drive the device until the mast 49 is in the second "chamber".
  • FIGS. 10 and 11 A plate 51 and 52 is pivotally mounted on the left and right of the sliding sleeve of the guide tower, designated 50, about vertical axes 53 and 54.
  • the panels can actually be flat lattice structures.
  • Each plate carries four horizontally acting coupling parts 55, which laterally grip the lifting tower 6.
  • the construction can be such that one of the two plates 51 and 52 alone gives the lifting tower 6 sufficient support.
  • the coupling parts 55 must be equipped with corresponding locking devices and provision must also be made for the fixing of the respective load-bearing plate, in the example plate 51, on the guide tower 8. The particularly simple procedure is advantageous compared to the constructions described so far.
  • FIG. 12 Another underside bridge device is shown in FIG. 12. It differs from the examples described so far in that the lifting tower 6 is guided up and down on the guide tower 8 by means of rigid guide arms 57 attached to it. Furthermore, there is no need for an expensive truck as a transport vehicle. Instead, a simple two-axle trailer chassis 58, the twin wheels of which are designated 59, is used for road transport. A separate company chassis is provided for operation on the bridge, consisting of a platform 60, a running frame 61 and a drive frame 62. The horizontal axis 9 of the guide tower 8 is articulated on the platform 60.
  • the special feature is that on the side of the guide tower 8 facing away from the lifting tower 6 there is a turntable 63 which is rotatably connected to the trailer chassis 58, the axis of rotation 64 extending perpendicularly to the base of the trailer chassis 58.
  • the advantage of this bridge underside device lies in the extremely narrow working base on the bridge, so that it is particularly suitable for very narrow bridges or for bridges with extreme traffic loads.
  • the dismantling of the device into the transport position is described as follows: after the work platform 5 has been folded in, the towers are inclined to the right about the axis 9 and pivoted into the horizontal position. The twin wheels 59 come into contact with the surface of the bridge. The weight of the device is now on the turntable 63. Now the bogie 61 is lifted from the base by swiveling the support wheels up and the drive frame 62 is uncoupled from the lifting cylinder 65 attached to the platform 60. Now you turn the whole device on the turntable by 90 ° in the longitudinal direction of the bridge and the direction of travel.
  • the drive frame 62 which is now located next to the trailer chassis and between its two axles, is finally coupled to the lifting cylinder 65 at another point and lifted up by it so far that it does not interfere with road transport.
  • the device can now be driven off by means of a towing vehicle.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Claims (10)

1. Dispositif pour l'inspection du dessous de ponts, comportant un châssis (2) se trouvant sur le pont (32) et déplaçable le long de la bordure du pont et un pylône (6) levable et abaissable, porté et maintenu par celui-ci, qui s'étend vers le bas par dehors de la bordure du pont et à l'extrémité inférieure duquel est prévue une passerelle de travail (5) en porte-à-faux sous le pont, caractérisé en ce que le châssis (2) présente un pylône de guidage (8) se trouvant du côté interne de la barrière latérale (34) du pont (32), et en ce que le pylône (6) est déplaçable vers le haut et vers le bas sur le pylône de guidage au moyen d'organes de support (7, 10, 11, 24 ; 40, 43, 44 ; 50, 51, 52 ; 57) en porte-à-faux au-dessus de la barrière latérale.
2. Dispositif selon la revendication 1, caractérisé en ce que le châssis est réalisé sous forme d'un véhicule de transport (1) approprié pour le transport du dispositif d'inspection dans son ensemble sur de longues distances, et présente un chariot (3) rotatif autour d'un axe vertical (4), sur lequel le pylône de guidage (8) est monté pivotant autour d'un axe horizontal (9).
3. Dispositif selon la revendication 2, caractérisé en ce que le chariot est équipé de galets d'appui abaissables sur la surface du pont, dont les axes croisent perpendiculairement l'axe de pivotement (9) du pylône de guidage (8).
4. Dispositif selon la revendication 2, caractérisé en ce que le châssis (2) du véhicule de transport (1) présente des bras transversaux (29) munis de galets d'appùi (31).
5. Dispositif selon la revendication 2, caractérisé en ce que le chariot est agencé sur un coulisseau transversal (39) mobile horizontalement et transversalement au sens de marche par rapport au châssis (2).
6. Dispositif selon la revendication 1, caractérisé en ce que le pylône de guidage (8) est monté pivotant autour d'un axe horizontal (9) sur le châssis (60), et présente, sur son dessous en position de transport horizontale, un chariot de rotation (63), qui peut tourner avec un châssis de transport (58), l'axe (64) du chariot de rotation s'étendant orthogonalement au pylône de guidage (8) et orthogonalement à la surface du châssis de transport.
7. Dispositif selon les revendications 1 et 2, caractérisé en ce que, sur le pylône de guidage (8), est prévu un support coulissant (7) déplaçable . vers le haut et vers le bas, auquel sont fixés des bras de support (10) rigides en porte-à-faux, et en ce que, sur le chariot de rotation (3), sont montés de façon pivotante autour d'axes verticaux (25) deux bras (24), les bras de support, les bras pivotants et le pylône de guidage (6) présentant des parties de couplage (11, 12, 27, 28) qui peuvent être couplées et découplées en direction verticale pour leur liaison mutuelle.
8. Dispositif selon la revendication 1, caractérisé en ce que, sur le pylône de guidage (8), est prévu un support coulissant (40) déplaçable vers le haut et vers le bas, sur lequel sont agencés trois parallélogrammes, lesquels présentent chacun plusieurs bras superposés (43, 44, 43', 44', 43", 44") qui peuvent pivoter vers le haut et vers le bas, qui sont reliés l'un à l'autre par une barre articulée (45, 45', 45") agencée verticalement et peuvent être actionnés au moyen d'un entraînement de pivot (46), et en ce que les bras peuvent être reliés au pylône (6) à l'aide de parties de couplage enfichables.
9. Dispositif selon la revendication 1, caractérisé en ce que, sur le pylône de guidage (8), est prévu un support coulissant (50) déplaçable vers lé haut et vers le bas, sur lequel sont montés de façon pivotante autour d'axes verticaux (53, 54) deux cadres (51, 52), desquels chacun peut porter seul le pylône (6).
10. Dispositif selon une des revendications 7 à 9, caractérisé en ce qu'un dispositif de commande de sécurité est prévu, lequel empêche l'actionnement simultané de tous les organes de support ainsi que la séparation d'autres organes de support, aussi longtemps qu'un organe de support est séparé.
EP85103282A 1984-03-24 1985-03-21 Dispositif pour l'inspection des parties inférieures des ponts Expired EP0156304B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85103282T ATE47176T1 (de) 1984-03-24 1985-03-21 Brueckenuntersichtvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843410952 DE3410952A1 (de) 1984-03-24 1984-03-24 Brueckenuntersichtvorrichtung
DE3410952 1984-03-24

Publications (3)

Publication Number Publication Date
EP0156304A2 EP0156304A2 (fr) 1985-10-02
EP0156304A3 EP0156304A3 (en) 1986-12-30
EP0156304B1 true EP0156304B1 (fr) 1989-10-11

Family

ID=6231553

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85103282A Expired EP0156304B1 (fr) 1984-03-24 1985-03-21 Dispositif pour l'inspection des parties inférieures des ponts

Country Status (4)

Country Link
US (1) US4696371A (fr)
EP (1) EP0156304B1 (fr)
AT (1) ATE47176T1 (fr)
DE (2) DE3410952A1 (fr)

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DE8903771U1 (de) * 1989-03-25 1990-07-26 Moog, Alfons, 7774 Deggenhausertal Brückenuntersichtvorrichtung
DE8910749U1 (de) * 1989-09-08 1991-02-07 Moog, Alfons, 7774 Deggenhausertal Brückenuntersichtvorrichtung
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WO1997020988A1 (fr) * 1995-12-07 1997-06-12 Alfons Moog Dispositif de controle des ponts
CA2227986C (fr) * 1997-01-31 2004-12-28 Kidde Industries, Inc. Appareil de levage muni d'un ensemble articule de double fleche sous forme de parallelogramme
US5857534A (en) * 1997-06-05 1999-01-12 Kansas State University Research Foundation Robotic inspection apparatus and method
ITVI980095A1 (it) * 1998-05-07 1999-11-07 Cte Srl Elevatore per traslochi
DE19944801B4 (de) * 1999-09-18 2010-02-18 Starkstrom-Anlagen-Gesellschaft Mbh Vorrichtung zum Einhausen und Oberflächenbearbeiten von Stahlgittermasten u. dgl.
US6598702B1 (en) 2000-07-13 2003-07-29 Mcgillewie, Jr. Garth E. Under bridge access apparatus with cross-linking member connecting tower with vehicular chassis
FR2821638B1 (fr) * 2001-03-01 2005-01-14 Frederic Desneux Equipement pour la restauration, le nettoyage et/ou la mise en place d'equipements divers sur des parois verticales et/ou sous des voutes d'un ouvrage
CN102797222B (zh) * 2012-07-24 2014-09-24 武汉武大巨成结构股份有限公司 一种能避让桥侧障碍的吊架铰接式桥梁检修车
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JP6486771B2 (ja) * 2015-05-27 2019-03-20 前田建設工業株式会社 構造物の点検装置、及び点検方法
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ATE47176T1 (de) 1989-10-15
EP0156304A2 (fr) 1985-10-02
DE3410952A1 (de) 1985-09-26
DE3573628D1 (en) 1989-11-16
US4696371A (en) 1987-09-29
EP0156304A3 (en) 1986-12-30

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