EP0523757B1 - Portable bridge - Google Patents

Portable bridge Download PDF

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Publication number
EP0523757B1
EP0523757B1 EP92116939A EP92116939A EP0523757B1 EP 0523757 B1 EP0523757 B1 EP 0523757B1 EP 92116939 A EP92116939 A EP 92116939A EP 92116939 A EP92116939 A EP 92116939A EP 0523757 B1 EP0523757 B1 EP 0523757B1
Authority
EP
European Patent Office
Prior art keywords
bridge
sections
launching girder
support
stem
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92116939A
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German (de)
French (fr)
Other versions
EP0523757A2 (en
EP0523757A3 (en
Inventor
Rüdiger Kahmann
Hans-Norbert Wiedeck
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.)
Fried Krupp AG Hoesch Krupp
Original Assignee
Fried Krupp AG Hoesch Krupp
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Publication date
Application filed by Fried Krupp AG Hoesch Krupp filed Critical Fried Krupp AG Hoesch Krupp
Publication of EP0523757A2 publication Critical patent/EP0523757A2/en
Publication of EP0523757A3 publication Critical patent/EP0523757A3/en
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Publication of EP0523757B1 publication Critical patent/EP0523757B1/en
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D15/00Movable or portable bridges; Floating bridges
    • E01D15/12Portable or sectional bridges
    • E01D15/133Portable or sectional bridges built-up from readily separable standardised sections or elements, e.g. Bailey bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D15/00Movable or portable bridges; Floating bridges
    • E01D15/12Portable or sectional bridges
    • E01D15/127Portable or sectional bridges combined with ground-supported vehicles for the transport, handling or placing of such bridges or of sections thereof

Definitions

  • the invention relates to a layable bridge, which has at least three bridge sections - two ramp sections and at least one inner section - and a lower tension that can be extended downwards, the bridge sections being displaceable in a longitudinally displaceable manner on a laying device.
  • a generic bridge is known from DE-A-23 24 646.
  • this bridge is mounted in a longitudinally displaceable manner on a laying device in the form of roller stands set up on the bank.
  • the known bridge only has a stem which is arranged at the end opposite the supported end.
  • the undervoltage is formed by two side tension bands made of chain links that are connected to each other, the proportion of which increases the counter torque required during installation.
  • a layable bridge is also known, the bridge sections of which can be moved in a longitudinally displaceable manner on the laying beam of a laying device.
  • These bridge sections are designed as a downwardly open U-shaped beam with lateral legs, and a stem beam section is assigned to each bridge section.
  • The are a whole support beam sections stored centrally between the legs of the bridge sections.
  • the load-bearing capacity of the installed bridge is limited to the dimension which results from the cross section of the bridge sections and the stem support sections located within them, so that the length of a known bridge of the known type is limited for a given cross section.
  • the invention has for its object to provide a relocatable bridge that can be safely and quickly installed even in longer bridge lengths.
  • the bridge sections are designed as a downwardly open U-shaped carrier with lateral legs, that centrally connected between the two legs of the bridge sections, simultaneously connectable stem support sections are mounted so that the stem carrier formed from the stem support sections at least has a transverse joint and that the undervoltage extended downward is formed by the stem support.
  • the stem support that can be moved within the bridge sections not only allows - with the same counter-torque in the laying device - a greater length than a bridge with a stem.
  • the weight of the bridge to be installed is reduced, which means that the possible length of the bridge can be increased during installation.
  • the prefabricated girder enables the bridge to be laid under its tension - with the same load and the same construction cross-section as a whole - a greater bridge length between the support points.
  • the stem support sections have coaxially mounted rollers which engage in guide rails arranged on the legs of the bridge sections and - with the exception of the rollers arranged on the two ends of the stem support - in the direction of their axis of rotation out of the guide rails in the direction are displaceable on the inside of the stem girder.
  • the rollers of the stem support sections - in particular during the laying process - engage in the guide rails of the bridge sections, the stem support sections are rigidly supported in the bridge sections.
  • the displaceability of the middle rollers out of the guide rails represents an advantageous possibility of extending the stem support downwards as an undervoltage.
  • rollers arranged in pairs with the same axis can preferably be displaced by a disengaging device with a double inclined guide that is height-adjustable in the vertical longitudinal center plane of the stem support and can be actuated from the outside.
  • ends of the inner sections of the stem support and the bridge part forming the middle of the bridge can preferably be connected to the two ends in a longitudinally adjustable support which, in a further embodiment of the invention, can be arranged in the stem support so as to be folded out.
  • a bridge according to the invention in one exemplary embodiment has two ramp sections 1 and 1 'and two inner sections 2 and 2', one ramp section and one inner section each forming half of the bridge which can be laid.
  • the bridge further comprises a stem support 7, which is composed of stem sections arranged in the bridge sections 1, 2,...
  • the stem sections can be locked together with the bridge sections 1, 2, ... at the same time.
  • the stem support 7 is longitudinally displaceable within the bridge in the stretched state.
  • the stem support 7 In the area of the middle of the bridge, the stem support 7 has a joint 10 with an axis running transversely to the longitudinal extension of the stem support.
  • the inner sections 2, 2 'of the bridges as shown in FIG. 7, have two mutually parallel beams 11, 12, which are connected to one another via a carriageway slab 13 on their upper side, so that in cross section a U which is open towards the bottom results.
  • the stem beam 7 runs in the longitudinal direction.
  • a U-shaped rail 14 arranged in the longitudinal direction so that the open sides of the two rails face each other.
  • each stem support section has at least two pairs of rollers 15 and 15 ', respectively.
  • the displacement of the rollers 15 is effected by a double inclined guide 28, in which a V-shaped rail 29 that can be moved up and down is provided, in which a displacement roller 30 engages.
  • the displacement roller 30 is arranged at the inner end of a longitudinally displaceable axis 31 which carries the roller 15 at the other end.
  • the displacement of the axis 31 and thus the rollers 15 takes place in that a punch 32 acting on the lower tip of the V-shaped rail 29 is moved up and down, which is guided in a height-adjustable manner in the vertical longitudinal center plane of the stem support 7 and approximately up to Top of the stem support is enough.
  • the adjustment can be done manually or by means of an appropriate device centrally.
  • a knee lever system can also be used instead of the V-shaped rail.
  • a support device 33 can be connected to the stem support 7 on the one hand and to the rails 14 of the bridge sections 1, 2, ... on the other hand.
  • the support device 33 has an upper cross member 34, at the end of which rollers 35 engage in the rails 14, and a lower cross member 36 fastened to the upper side of the stem support 7.
  • Between the cross members 34 and 36 extend in the vertical direction two transverse to the bridge aligned hydraulic cylinders 37 which are extended for bracing.
  • a triangular cross stabilization 38 is inserted between the two hydraulic cylinders 37.
  • the support device 33 is connected in a shear-resistant manner at its ends, which also applies to the two end fastenings of the stem girder in the bridge.
  • the number of inner sections 2, 2 'which can be laid can be any, depending on the length of the bridge to be laid and the sections and the laying capacity of the vehicle provided with a laying device.
  • the supporting device 33 for the undervoltage is preferably placed in the vertical plane between two inner sections.
  • U-shaped rails 16 are arranged opposite one another in the same way as the rails 14. As can be seen in FIG. 11, these are flying mounted rollers 17 of roller sets 18 and 19 are arranged, which - opposite - are arranged on both sides of the laying arm 8.
  • Racks 20 are arranged somewhat above the rails 16, parallel to these.
  • the lower outer corners of the stem support 7 are also provided with parallel racks 21.
  • the two vehicles A and B each carry a ramp section 1 or 1 'and an inner section 2 or 2' as bridge sections.
  • the ramp section 1 is fastened directly to a frame 3 which is arranged to be longitudinally displaceable on the vehicle A or B, while the bridge section 2 of approximately the same length rests on the ramp section 1.
  • the vehicle and associated bridge sections each form a unit, the advantage of which is in particular that they can be combined as desired to form a bridge.
  • Each vehicle can only have one bridge section (ramp section) and possibly carry three bridge sections.
  • the vehicle A is brought backwards up to close to the obstacle to be bridged, for example a river 4.
  • Vehicle B is positioned opposite vehicle A in the opposite direction at a distance of approximately one vehicle length.
  • the bridge parts are moved in a manner known per se from the transport position into the installation position (Fig. 2). This is done in that the ramp sections 1 and 1 'are moved backwards on their vehicles and at the same time the inner sections 2 and 2' are raised by an arm 39 to such an extent that the movement of the ramp sections is made possible.
  • the position of the ramp and inner sections in front of each other are reached, they are each locked rigidly with each other.
  • the stem sections arranged in the bridge sections which cannot be seen in FIGS. 1 to 3, are locked together at the same time.
  • Fig. 3 it can be seen how the one half of the bridge produced by the locking is then moved forward in the direction of the other half of the bridge with respect to the vehicle in question and is locked together after the collision. A simultaneous coupling of the inner stem sections is also carried out.
  • the locking is preferably carried out automatically by corresponding snap-in clutches.
  • the entire bridge is moved in the direction of the obstacle 4 for laying.
  • the longitudinally displaceable stem support 7 is extended completely to its end position or at least to such an extent that the obstacle 4 is completely spanned when the position recognizable in FIG. 4, which is then approached and in which the middle of the bridge approximately over the supports 6 is arranged, is reached.
  • the vehicle B has thereby been released from the bridge and can be removed.
  • the bridge is moved a little further over the obstacle until the middle of the bridge lies approximately at the end of the laying arm 8, which in the area of the supports 6 can be pivoted about a horizontal axis 8 ′ on the frame 3 of the vehicle A. is articulated.
  • the laying arm 8 By pivoting the laying arm 8 by means of a hydraulic cylinder 9 engaging it in a joint 9 'and articulated with the other end on the frame 3 downwards, the free end of the stem support 7 is deposited on the other side, not shown, bank. Then the bridge, which is supported on the stem support 7, is moved to the other side of the bank.
  • the support on the other side of the bank is designed in a known manner so that there is enough space for the tip 1a of the ramp section 1 of the bridge so that the bridge can be moved to its end position.
  • the interior and ramp sections each have a length of 13 m, so that the overall length of the bridge is 52 m.
  • the length of the stem support 7 is about three quarters of this length.
  • Fig. 6 shows the finished bridge after lowering the ramp part 1 'in a known manner by means of the installation arm 8 which is pivoted completely downwards.
  • the stem support 7 is then retracted in its starting position before installation and, forming an undervoltage, extended downwards, what is made possible by the joint 10.
  • Vehicle A like vehicle B, has support rollers 40 on the upper side of its driver's cab 43, which also encloses the vehicle drive motor, the axes of which extend transversely to the direction of displacement, and on which the bridge sections in the case of a Support sagging.
  • the drive 23 When moving a bridge half or the entire bridge after coupling, as shown in FIGS. 2 and 3, the drive 23 is pivoted downward, so that the pinion 22 and the racks 20 of the carrier 11, 12 of the bridge sections engage. The intervention of the drive of the vehicle A is sufficient for moving the entire bridge. The drive 23 is then pivoted upward so that the pinions 22 engage in the toothed racks 21 of the stem support 7 and can thereby be extended in the direction of the obstacle (FIG 4).
  • the drive 23 for engaging the pinions 22 in the toothed racks 20 of the bridge sections 1, 2,... is again pivoted downward, which is now on the tip of the stem support 7 on the one hand and on the rollers 16 on the other hand, the supporting bridge is completely driven over the obstacle 4.
  • Additional support rollers 40 are also located on the driver's cab 43 of vehicles A. and B. The bridge is supported on these support rollers only when moving in the horizontal direction (FIGS. 2 to 4).
  • the stem support 7 is returned to the starting position, i.e. symmetrical to the middle of the bridge, retracted. Due to the connection in the roller guides 14, 15, the stem support 7 is connected to the bridge and supports the load in accordance with its height rigidity.
  • the stem support 7 released by the sinking of the rollers 15 can now move downward out of the bridge as a result of the joint 10. Then in the area of the joint 10, the support device 33 is connected to the stem support 7 on the one hand and to the rails 14 of the bridge sections 1, 2,... On the other hand, and the hydraulic cylinders 37 are extended by the stem support 7 for tensioning the undervoltage.
  • the vehicle A which is again provided with a laying arm 8 and a frame 3, carries only one ramp section 1, while another vehicle C, which is only used for the transport of bridge parts and two stacked inner sections 2, 2 ' carries, drives backwards to the front of the vehicle A (Fig. 12).
  • the sections are slightly raised by a scissor-type lifting device 42 provided with support rollers 41 at their upper ends, which, as can be seen in FIG. 13, is arranged on the vehicle C until the inner section 2 lying above and slightly projecting at the end of the vehicle with ramp section 1 on vehicle A is at the same height.
  • the lifting device 42 is lowered again and the coupled bridge parts or sections 1 and 2 are moved with the laying arm 8 towards the obstacle 4.
  • the inner section 2 ′ still located on the vehicle C is raised with the lifting device 42 to such an extent that it can be coupled to the inner section 2 by slightly moving the vehicle C backwards or by advancing the coupled sections 1 and 2.
  • the vehicle C is removed and a ramp section 1 ′ located on another vehicle D, which also has a lifting device 42, is coupled to the inner section 2 ′ by moving out.
  • the frame 3 of the vehicle A is extended and the laying process is carried out as in the exemplary embodiment according to FIGS. 3 to 6.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Telephone Function (AREA)
  • Clamps And Clips (AREA)
  • Connection Of Plates (AREA)

Description

Die Erfindung bezieht sich auf eine verlegbare Brücke, die mindestens drei Brückenabschnitte - zwei Rampenabschnitte und mindestens einen Innenabschnitt - und eine nach unten hin ausfahrbare Unterspannung aufweist, wobei die Brückenabschnitte auf einer Verlegeeinrichtung längsverschieblich verfahrbar sind.The invention relates to a layable bridge, which has at least three bridge sections - two ramp sections and at least one inner section - and a lower tension that can be extended downwards, the bridge sections being displaceable in a longitudinally displaceable manner on a laying device.

Eine gattungsgemäße Brücke ist aus der DE-A-23 24 646 bekannt. Diese Brücke ist für den Verlegevorgang mit den Fahrbahnträgern dieser Brückenabschnitte auf einer Verlegeeinrichtung in Form am Ufer aufgestellter Rollenböcke längsverschieblich gelagert. Die bekannte Brücke weist lediglich einen Vorbauschnabel auf, der an dem dem abgestützten Ende gegenüberliegenden Ende angeordnet ist. Während des Verlegens muß also für den gesamten jeweils überkragenden Teil der Brücke das entsprechend notwendige Gegenmoment aufgebracht werden. Die Unterspannung wird durch zwei seitliche Zugbänder aus miteinander verbundenen Kettengliedern gebildet, deren Anteil das notwendige Gegenmoment bei der Verlegung noch vergrößert.A generic bridge is known from DE-A-23 24 646. For the laying process with the carriageway girders of these bridge sections, this bridge is mounted in a longitudinally displaceable manner on a laying device in the form of roller stands set up on the bank. The known bridge only has a stem which is arranged at the end opposite the supported end. During installation, the corresponding counter torque must be applied to the entire projecting part of the bridge. The undervoltage is formed by two side tension bands made of chain links that are connected to each other, the proportion of which increases the counter torque required during installation.

Aus der DE-A-28 46 182 ist ferner eine verlegbare Brücke bekannt, deren Brückenabschnitte an dem Verlegebalken einer Verlegeeinrichtung längsverschieblich verfahrbar sind. Diese Brückenabschnitte sind als nach unten hin offener U-förmiger Träger mit seitlichen Schenkeln ausgebildet, und jedem Brückenabschnitt ist ein Vorbauträgerabschnitt zugeordnet. Die einen ganzen Vorbauträger bildenden Vorbauträgerabschnitte sind zentral zwischen den Schenkeln der Brückenabschnitte gelagert. Die Tragfähigkeit der verlegten Brücke ist auf das Maß beschränkt, das sich aus dem Querschnitt der Brückenabschnitte und der innerhalb dieser befindlichen Vorbauträgerabschnitte ergibt, so daß die Länge einer verlegbaren Brücke der bekannten Art bei gegebenem Querschnitt begrenzt ist.From DE-A-28 46 182 a layable bridge is also known, the bridge sections of which can be moved in a longitudinally displaceable manner on the laying beam of a laying device. These bridge sections are designed as a downwardly open U-shaped beam with lateral legs, and a stem beam section is assigned to each bridge section. The are a whole support beam sections stored centrally between the legs of the bridge sections. The load-bearing capacity of the installed bridge is limited to the dimension which results from the cross section of the bridge sections and the stem support sections located within them, so that the length of a known bridge of the known type is limited for a given cross section.

Demgegenüber liegt der Erfindung die Aufgabe zugrunde, eine verlegbare Brücke zu schaffen, die auch in größeren Brückenlängen sicher und schnell verlegt werden kann.In contrast, the invention has for its object to provide a relocatable bridge that can be safely and quickly installed even in longer bridge lengths.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Brückenabschnitte als nach unten hin offener U-förmiger Träger mit seitlichen Schenkeln ausgebildet sind, daß zentral zwischen den beiden Schenkeln den Brückenabschnitten zugeordnete, gleichzeitig mitverbindbare Vorbauträgerabschnitte längsverschieblich gelagert sind, daß der aus den Vorbauträgerabschnitten gebildete Vorbauträger mindestens ein Quergelenk aufweist und daß die nach unten hin ausgefahrene Unterspannung durch den Vorbauträger gebildet ist.This object is achieved in that the bridge sections are designed as a downwardly open U-shaped carrier with lateral legs, that centrally connected between the two legs of the bridge sections, simultaneously connectable stem support sections are mounted so that the stem carrier formed from the stem support sections at least has a transverse joint and that the undervoltage extended downward is formed by the stem support.

Der innerhalb der Brückenabschnitte bewegbare Vorbauträger erlaubt nicht nur - bei gleichem Gegenmoment in der Verlegeeinrichtung - eine größere Länge gegenüber einer Brücke mit einem Vorbauschnabel. Durch den Wegfall einer separaten, zusätzlichen Unterspannung verringert sich das Gewicht der zu verlegenden Brücke, wodurch die mögliche Länge der Brücke beim Verlegen vergrößert werden kann. Schließlich ermöglicht der Vorbauträger bei der fertig verlegten Brücke in seiner Eigenschaft als Unterspannung - bei gleicher Belastung und gleichem Konstruktionsquerschnitt insgesamt - eine größere Brückenlänge zwischen den Auflagerpunkten.The stem support that can be moved within the bridge sections not only allows - with the same counter-torque in the laying device - a greater length than a bridge with a stem. By eliminating a separate, additional undervoltage, the weight of the bridge to be installed is reduced, which means that the possible length of the bridge can be increased during installation. After all, the prefabricated girder enables the bridge to be laid under its tension - with the same load and the same construction cross-section as a whole - a greater bridge length between the support points.

Vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Unteransprüchen wiedergegeben. So weisen die Vorbauträgerabschnitte zu ihrer Längsverschieblichkeit gegenüber den Brückenabschnitten paarweise gleichachsig gelagerte Rollen auf, die in an den Schenkeln der Brückenabschnitte angeordneten Führungsschienen eingreifen und - mit Ausnahme der an den beiden Enden des Vorbauträgers angeordneten Rollen - in Richtung ihrer Drehachse aus den Führungsschienen heraus in Richtung auf das Innere des Vorbauträgers verschiebbar sind. Solange die Rollen der Vorbauträgerabschnitte - insbesondere beim Verlegevorgang - in den Führungsschienen der Brückenabschnitte eingreifen, sind die Vorbauträgerabschnitte biegesteif in den Brückenabschnitten gelagert. Die Verschiebbarkeit der mittleren Rollen aus den Führungsschienen heraus stellt eine vorteilhafte Möglichkeit dar, den Vorbauträger als Unterspannung nach unten auszufahren.Advantageous embodiments of the invention are given in the dependent subclaims. For example, in order to be longitudinally displaceable compared to the bridge sections, the stem support sections have coaxially mounted rollers which engage in guide rails arranged on the legs of the bridge sections and - with the exception of the rollers arranged on the two ends of the stem support - in the direction of their axis of rotation out of the guide rails in the direction are displaceable on the inside of the stem girder. As long as the rollers of the stem support sections - in particular during the laying process - engage in the guide rails of the bridge sections, the stem support sections are rigidly supported in the bridge sections. The displaceability of the middle rollers out of the guide rails represents an advantageous possibility of extending the stem support downwards as an undervoltage.

Dabei kann das Verschieben der paarweise gleichachsig angeordneten Rollen vorzugsweise durch eine Ausrückvorrichtung mit einer in der senkrechten Längsmittelebene des Vorbauträgers höhenverstellbaren und von außen betätigbaren Doppel-Schrägführung erfolgen.In this case, the rollers arranged in pairs with the same axis can preferably be displaced by a disengaging device with a double inclined guide that is height-adjustable in the vertical longitudinal center plane of the stem support and can be actuated from the outside.

Die die Brückenmitte bildenden Enden der Innenabschnitte des Vorbauträgers und des Brückenteils sind dabei vorzugsweise mit den beiden Enden in einer längsverstellbaren Stütze verbindbar, die in einer weiteren Ausgestaltung der Erfindung in dem Vorbauträger ausklappbar angeordnet sein kann.The ends of the inner sections of the stem support and the bridge part forming the middle of the bridge can preferably be connected to the two ends in a longitudinally adjustable support which, in a further embodiment of the invention, can be arranged in the stem support so as to be folded out.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung, mit deren Hilfe auch der Verlegevorgang der Brücke nachfolgend näher erläutert wird, schematisch dargestellt. Es zeigen:

Fig. 1
zwei mit einer Verlegeeinrichtung versehene und jeweils einen Innen- und einen Rampenabschnitt einer Brücke tragende Fahrzeuge in Transportstellung, frontseitig einander gegenüberstehend,
Fig. 2
die beiden Fahrzeuge mit in Verlegestellung miteinander gekoppelten Brücken- und Rampenteilen,
Fig. 3
die beiden Fahrzeuge mit in der Verlegestellung miteinander gekoppelter Brücke,
Fig. 4
die von einem der beiden Fahrzeuge übernommene Brücke mit ausgefahrenem Vorbauträger,
Fig. 5
die über die Verlegeeinrichtung des Fahrzeugs weiter ausgefahrene Brücke beim Absenken des Vorbauträgers auf das gegenseitige Ufer,
Fig. 6
die fertig verlegte Brücke mit ausgefahrener Unterspannung in Ansicht,
Fig. 7
einen Schnitt nach der Linie VII-VII in Fig. 5,
Fig. 8
einen Querschnitt durch den Vorbauträger mit einer Ausrückvorrichtung für dessen Rollenführungen,
Fig. 9
einen Schnitt nach der Linie IX-IX in Fig. 6,
Fig. 10
einen am Verlegearm angelenkten, mit der Brücke und dem Vorbauträger alternierend verbindbaren Antrieb in Ansicht,
Fig. 11
ein mit einer Verlegeeinrichtung versehenes Fahrzeug in Seitenansicht in größerem Maßstab und
Fig. 12 bis 14
den Koppel- und Verlegevorgang mit mehreren Fahrzeugen, von denen nur eins mit einer Verlegeeinrichtung versehen ist, in Ansicht.
An embodiment of the invention is shown schematically in the drawing, with the help of which the laying process of the bridge is also explained in more detail below. Show it:
Fig. 1
two vehicles provided with a laying device and each carrying an inner and a ramp section of a bridge in the transport position, facing each other from the front,
Fig. 2
the two vehicles with the bridge and ramp parts coupled to each other in the laying position,
Fig. 3
the two vehicles with the bridge coupled in the laying position,
Fig. 4
the bridge taken over by one of the two vehicles with the stem extended,
Fig. 5
the bridge extended further via the laying device of the vehicle when the stem girder is lowered onto the mutual bank,
Fig. 6
the completed bridge with extended undervoltage in view,
Fig. 7
5 shows a section along the line VII-VII in FIG. 5,
Fig. 8
3 shows a cross section through the stem support with a disengaging device for its roller guides,
Fig. 9
6 shows a section along the line IX-IX in FIG. 6,
Fig. 10
a drive in articulation on the laying arm, which can be alternately connected to the bridge and the stem support, in view,
Fig. 11
a vehicle provided with a laying device in side view on a larger scale and
12 to 14
the coupling and laying process with several vehicles, only one of which is provided with a laying device, in view.

Wie aus Fig. 6 ersichtlich, weist eine Brücke nach der Erfindung in einem Ausführungsbeispiel zwei Rampenabschnitte 1 und 1' sowie zwei Innenabschnitte 2 und 2' auf, wobei ein Rampen- und ein Innenabschnitt jeweils die eine Hälfte der verlegbaren Brücke bilden.As can be seen from FIG. 6, a bridge according to the invention in one exemplary embodiment has two ramp sections 1 and 1 'and two inner sections 2 and 2', one ramp section and one inner section each forming half of the bridge which can be laid.

Die Brücke umfaßt ferner einen Vorbauträger 7, der aus in den Brückenabschnitten 1, 2, ... angeordneten Vorbauabschnitten zusammengesetzt ist. Die Vorbauträgerabschnitte sind gleichzeitig mit den Brückenabschnitten 1, 2, ... miteinander verriegelbar. Der Vorbauträger 7 ist in gestrecktem Zustand innerhalb der Brücke längsverschieblich. Im Bereich der Brückenmitte weist der Vorbauträger 7 ein Gelenk 10 mit einer quer zur Längserstreckung des Vorbauträgers verlaufenden Achse auf.The bridge further comprises a stem support 7, which is composed of stem sections arranged in the bridge sections 1, 2,... The stem sections can be locked together with the bridge sections 1, 2, ... at the same time. The stem support 7 is longitudinally displaceable within the bridge in the stretched state. In the area of the middle of the bridge, the stem support 7 has a joint 10 with an axis running transversely to the longitudinal extension of the stem support.

Die Innenabschnitte 2, 2' der Brücken weisen, wie es Fig. 7 zeigt, zwei parallel zueinander verlaufende Träger 11, 12 auf, die über eine Fahrbahnplatte 13 an ihrer Oberseite miteinander verbunden sind, so daß sich im Querschnitt ein nach unten hin offenes U ergibt. In der Mitte zwischen den beiden Trägern 11 und 12 verläuft in Längsrichtung der Vorbauträger 7. An den einander zugewandten Innenseiten der Träger 11 und 12 ist jeweils eine U-förmige Schiene 14 in Längsrichtung so angeordnet, daß die offenen Seiten der beiden Schienen einander zugewandt sind. In die Schienen 14 greifen im Vorbauträger 7 gelagerte und aus diesem hervortretende Rollen 15 und (an den beiden Enden des Vorbauträgers 7) 15' ein, die gleichachsig paarweise einander gegenüberliegen und die eine Längsverschiebung des Vorbauträgers 7 in der Brücke dadurch ermöglichen, daß diese Führung in den Rampenabschnitten 1, 1' fortgesetzt ist. Jeder Vorbauträgerabschnitt weist mindestens zwei Paar Rollen 15 bzw. 15' auf.The inner sections 2, 2 'of the bridges, as shown in FIG. 7, have two mutually parallel beams 11, 12, which are connected to one another via a carriageway slab 13 on their upper side, so that in cross section a U which is open towards the bottom results. In the middle between the two beams 11 and 12, the stem beam 7 runs in the longitudinal direction. On the mutually facing inner sides of the beams 11 and 12, respectively a U-shaped rail 14 arranged in the longitudinal direction so that the open sides of the two rails face each other. In the rails 14 mounted in the stem support 7 and protruding rollers 15 and (at the two ends of the stem support 7) 15 ', which are opposite each other in pairs on the same axis and which allow a longitudinal displacement of the stem support 7 in the bridge, that this guide is continued in the ramp sections 1, 1 '. Each stem support section has at least two pairs of rollers 15 and 15 ', respectively.

Mit Ausnahme der vier an beiden Enden des Vorbauträgers 7 angeordneten Rollen 15' sind sämtliche über die Länge des Vorbauträgers verteilten Rollen 15 in Richtung ihrer Drehachse so nach innen verschiebbar, daß sie nicht mehr in die Schienen 14 eingreifen und jeweils in einer Ausnehmung 27 des Vorbauträgers 7 versenkbar sind, wie es in Fig. 8 angedeutet ist.With the exception of the four rollers 15 'arranged on both ends of the stem support 7, all of the rollers 15 distributed over the length of the stem support are displaceable in the direction of their axis of rotation in such a way that they no longer engage in the rails 14 and in each case in a recess 27 in the stem support 7 are retractable, as indicated in Fig. 8.

Das Verschieben der Rollen 15 wird durch eine Doppel-Schrägführung 28 bewirkt, bei der eine auf- und abbewegbare V-förmige Schiene 29 vorgesehen ist, in welche eine Verschieberolle 30 eingreift. Die Verschieberolle 30 ist am innenliegenden Ende einer längsverschieblichen Achse 31 angeordnet, die am anderen Ende die Rolle 15 trägt. Das Verschieben der Achse 31 und damit der Rollen 15 erfolgt dadurch, daß ein an der unten liegenden Spitze der V-förmigen Schiene 29 angreifender Stempel 32 auf- und abbewegt wird, der in der senkrechten Längsmittelebene des Vorbauträgers 7 höhenverstellbar geführt ist und etwa bis zur Oberseite des Vorbauträgers reicht. Das Verstellen kann von Hand oder mittels einer entsprechenden Einrichtung zentral erfolgen. Anstelle der V-förmigen Schiene kann auch ein Kniehebelsystem eingesetzt werden.The displacement of the rollers 15 is effected by a double inclined guide 28, in which a V-shaped rail 29 that can be moved up and down is provided, in which a displacement roller 30 engages. The displacement roller 30 is arranged at the inner end of a longitudinally displaceable axis 31 which carries the roller 15 at the other end. The displacement of the axis 31 and thus the rollers 15 takes place in that a punch 32 acting on the lower tip of the V-shaped rail 29 is moved up and down, which is guided in a height-adjustable manner in the vertical longitudinal center plane of the stem support 7 and approximately up to Top of the stem support is enough. The adjustment can be done manually or by means of an appropriate device centrally. A knee lever system can also be used instead of the V-shaped rail.

Im Bereich des Gelenks 10 ist eine Abstützvorrichtung 33 mit dem Vorbauträger 7 einerseits und mit den Schienen 14 der Brückenabschnitte 1, 2, ... andererseits verbindbar. Die Abstützvorrichtung 33 weist einen oberen Querträger 34, an dessen Ende Rollen 35 in die Schienen 14 eingreifen, und einen unteren an der Oberseite des Vorbauträgers 7 befestigten Querträger 36 auf. Zwischen den Querträgern 34 und 36 erstrecken sich in senkrechter Richtung zwei quer zur Brücke ausgerichtete nebeneinanderliegende Hydraulikzylinder 37, die zur Verspannung ausgefahren werden. Zwischen den beiden Hydraulikzylindern 37 wird eine dreieckförmige Querstabilisation 38 eingesetzt. Die Abstützvorrichtung 33 ist an ihren Enden schubfest verbunden, was auch für die beiden Endbefestigungen des Vorbauträgers in der Brücke gilt.In the area of the joint 10, a support device 33 can be connected to the stem support 7 on the one hand and to the rails 14 of the bridge sections 1, 2, ... on the other hand. The support device 33 has an upper cross member 34, at the end of which rollers 35 engage in the rails 14, and a lower cross member 36 fastened to the upper side of the stem support 7. Between the cross members 34 and 36 extend in the vertical direction two transverse to the bridge aligned hydraulic cylinders 37 which are extended for bracing. A triangular cross stabilization 38 is inserted between the two hydraulic cylinders 37. The support device 33 is connected in a shear-resistant manner at its ends, which also applies to the two end fastenings of the stem girder in the bridge.

Es ist möglich, insbesondere bei längeren Brücken oder einem nicht ausreichend knicksteifen Vorbauträger, mehrere Abstützvorrichtungen und zugeordnete Gelenke vorzusehen, so daß die Unterspannung in Form einer Kettenlinie verläuft.It is possible to provide several support devices and associated joints, particularly in the case of longer bridges or an insufficiently rigid front beam, so that the undervoltage runs in the form of a chain line.

Die Anzahl der verlegbaren Innenabschnitte 2, 2' kann - je nach Länge der zu verlegenden Brücke und der Abschnitte sowie der Verlegekapazität des mit einer Verlegeeinrichtung versehenen Fahrzeugs - beliebig sein. Im Falle der Verwendung einer ungeraden Zahl von Innenabschnitten wird die Abstützvorrichtung 33 für die Unterspannung vorzugsweise in die senkrechte Ebene zwischen zwei Innenabschnitten gelegt.The number of inner sections 2, 2 'which can be laid can be any, depending on the length of the bridge to be laid and the sections and the laying capacity of the vehicle provided with a laying device. In the case of using an odd number of inner sections, the supporting device 33 for the undervoltage is preferably placed in the vertical plane between two inner sections.

An den unteren einander zugewandten Ecken der Träger 11 und 12 sind U-förmige Schienen 16 in gleicher Weise wie die Schienen 14 einander gegenüberliegend angeordnet. In diesen sind, wie aus Fig. 11 ersichtlich, fliegend gelagerte Rollen 17 von Rollensätzen 18 und 19 angeordnet, die - gegenüberliegend - an beiden Seiten des Verlegearms 8 beidseitig angeordnet sind.At the lower mutually facing corners of the beams 11 and 12, U-shaped rails 16 are arranged opposite one another in the same way as the rails 14. As can be seen in FIG. 11, these are flying mounted rollers 17 of roller sets 18 and 19 are arranged, which - opposite - are arranged on both sides of the laying arm 8.

Etwas über den Schienen 16 sind - parallel zu diesen - Zahnstangen 20 angeordnet. Die unteren äußeren Ecken des Vorbauträgers 7 sind ebenfalls mit parallel verlaufenden Zahnstangen 21 versehen.Racks 20 are arranged somewhat above the rails 16, parallel to these. The lower outer corners of the stem support 7 are also provided with parallel racks 21.

Nachfolgend wird das Verlegen der Brücke mit zwei Innenabschnitten 2, 2' und zwei Rampenabschnitten 1, 1' anhand der Zeichnung näher erläutert:The laying of the bridge with two inner sections 2, 2 'and two ramp sections 1, 1' is explained in more detail below with reference to the drawing:

Wie aus Fig. 1 ersichtlich, tragen die beiden Fahrzeuge A und B als Brückenabschnitte jeweils einen Rampenabschnitt 1 bzw. 1' und einen Innenabschnitt 2 bzw. 2'. In der gezeigten Transportstellung ist der Rampenabschnitt 1 direkt auf einem längsverschieblich auf dem Fahrzeug A bzw. B angeordneten Rahmen 3 befestigt, während der etwa gleichlange Brückenabschnitt 2 auf dem Rampenabschnitt 1 aufliegt. Hierbei bilden Fahrzeug und zugeordnete Brückenabschnitte jeweils eine Einheit, deren Vorteil insbesondere darin besteht, daß sie zur Bildung einer Brücke beliebig zusammengestellt werden können. Dabei kann jedes Fahrzeug auch nur einen Brückenabschnitt (Rampenabschnitt) und u.U. drei Brückenabschnitte tragen.As can be seen from FIG. 1, the two vehicles A and B each carry a ramp section 1 or 1 'and an inner section 2 or 2' as bridge sections. In the transport position shown, the ramp section 1 is fastened directly to a frame 3 which is arranged to be longitudinally displaceable on the vehicle A or B, while the bridge section 2 of approximately the same length rests on the ramp section 1. The vehicle and associated bridge sections each form a unit, the advantage of which is in particular that they can be combined as desired to form a bridge. Each vehicle can only have one bridge section (ramp section) and possibly carry three bridge sections.

Zur Vorbereitung des Verlegens wird das Fahrzeug A rückwärts bis nahe an das zu überbrückende Hindernis, z.B. einen Fluß 4, herangeführt. Das Fahrzeug B wird dem Fahrzeug A gegenüber in umgekehrter Richtung mit einem Abstand von etwa einer Fahrzeuglänge aufgestellt. Nach der Aufstellung der Fahrzeuge A und B werden die Brückenteile in an sich bekannter Weise aus der Transportstellung in die Verlegestellung verfahren (Fig. 2). Das geschieht dadurch, daß die Rampenabschnitte 1 und 1' auf ihren Fahrzeugen nach hinten verfahren werden und gleichzeitig die Innenabschnitte 2 und 2' durch einen Arm 39 so weit angehoben werden, daß das Verfahren der Rampenabschnitte ermöglicht wird. Sobald die Stellung der Rampen- und Innenabschnitte voreinander erreicht ist, werden sie jeweils miteinander biegesteif verriegelt. Die in den Brückenabschnitten angeordneten Vorbauträgerabschnitte, die in den Fig. 1 bis 3 nicht erkennbar sind, werden dabei gleichzeitig miteinander verriegelt.In preparation for the laying, the vehicle A is brought backwards up to close to the obstacle to be bridged, for example a river 4. Vehicle B is positioned opposite vehicle A in the opposite direction at a distance of approximately one vehicle length. After the installation of vehicles A and B, the bridge parts are moved in a manner known per se from the transport position into the installation position (Fig. 2). This is done in that the ramp sections 1 and 1 'are moved backwards on their vehicles and at the same time the inner sections 2 and 2' are raised by an arm 39 to such an extent that the movement of the ramp sections is made possible. As soon as the position of the ramp and inner sections in front of each other is reached, they are each locked rigidly with each other. The stem sections arranged in the bridge sections, which cannot be seen in FIGS. 1 to 3, are locked together at the same time.

In Fig. 3 ist erkennbar, wie anschließend die durch die Verriegelung hergestellte eine Brückenhälfte in Richtung auf die andere Brückenhälfte in bezug auf das betreffende Fahrzeug nach vorn verfahren wird und nach dem Zusammenstoßen miteinander verriegelt wird. Dabei erfolgt ebenfalls wieder eine gleichzeitige Kopplung der innenliegenden Vorbauträgerabschnitte. Die Verriegelung erfolgt vorzugsweise selbsttätig durch entsprechende Einrastkupplungen. Danach wird der Rahmen 3 des Fahrzeugs A nach hinten, also zum Hindernis 4 hin, vollständig ausgefahren, so daß die am Ende des Rahmens an seinen Ecken angeordneten zwei Stützen 6 in nach unten ausgefahrenem Zustand sich in ausreichendem Abstand kurz vor der Böschung 5 auf dem Erdreich abstützen.In Fig. 3 it can be seen how the one half of the bridge produced by the locking is then moved forward in the direction of the other half of the bridge with respect to the vehicle in question and is locked together after the collision. A simultaneous coupling of the inner stem sections is also carried out. The locking is preferably carried out automatically by corresponding snap-in clutches. Thereafter, the frame 3 of the vehicle A to the rear, that is to say to the obstacle 4, is fully extended, so that the two supports 6 arranged at the ends of the frame at its corners are in the extended state at a sufficient distance shortly before the slope 5 on the Support soil.

Daran anschließend wird die gesamte Brücke zum Verlegen in Richtung auf das Hindernis 4 verschoben. In dieser Stellung wird der in der Brücke längsverschiebliche Vorbauträger 7 vollständig bis zu seiner Endstellung oder zumindest so weit ausgefahren, daß das Hindernis 4 vollständig überspannt wird, wenn die in der Fig. 4 erkennbare Stellung, die anschließend angefahren wird und in welcher die Brückenmitte etwa über den Stützen 6 angeordnet ist, erreicht ist. Das Fahrzeug B ist dadurch von der Brücke freigegeben worden und kann entfernt werden.Then the entire bridge is moved in the direction of the obstacle 4 for laying. In this position, the longitudinally displaceable stem support 7 is extended completely to its end position or at least to such an extent that the obstacle 4 is completely spanned when the position recognizable in FIG. 4, which is then approached and in which the middle of the bridge approximately over the supports 6 is arranged, is reached. The vehicle B has thereby been released from the bridge and can be removed.

Anschließend wird, wie in Fig. 5 gezeigt, die Brücke noch etwas weiter über das Hindernis gefahren, bis die Brückenmitte etwa am Ende des Verlegearms 8 liegt, der im Bereich der Stützen 6 um eine horizontale Achse 8' schwenkbar am Rahmen 3 des Fahrzeugs A angelenkt ist. Durch Verschwenken des Verlegearms 8 mittels eines in einem Gelenk 9' an ihm angreifenden, und mit dem anderen Ende am Rahmen 3 angelenkten Hydraulikzylinders 9 nach unten wird das freie Ende des Vorbauträgers 7 auf das jenseitige, nicht dargestellte Ufer abgesetzt. Danach wird die Brücke, sich am Vorbauträger 7 abstützend, bis zum jenseitigen Ufer verfahren. Die Abstützung auf dem jenseitigen Ufer ist dabei in bekannter Weise so gestaltet, daß genügend Freiraum für die Spitze 1a des Rampenabschnitts 1 der Brücke vorhanden ist, so daß die Brücke bis in ihre Endstellung verfahren werden kann. Die Innen- und Rampenabschnitte weisen jeweils eine Länge von 13 m auf, so daß sich für die Brücke eine Gesamtlänge von 52 m ergibt. Die Länge des Vorbauträgers 7 beträgt etwa drei Viertel dieser Länge.Subsequently, as shown in FIG. 5, the bridge is moved a little further over the obstacle until the middle of the bridge lies approximately at the end of the laying arm 8, which in the area of the supports 6 can be pivoted about a horizontal axis 8 ′ on the frame 3 of the vehicle A. is articulated. By pivoting the laying arm 8 by means of a hydraulic cylinder 9 engaging it in a joint 9 'and articulated with the other end on the frame 3 downwards, the free end of the stem support 7 is deposited on the other side, not shown, bank. Then the bridge, which is supported on the stem support 7, is moved to the other side of the bank. The support on the other side of the bank is designed in a known manner so that there is enough space for the tip 1a of the ramp section 1 of the bridge so that the bridge can be moved to its end position. The interior and ramp sections each have a length of 13 m, so that the overall length of the bridge is 52 m. The length of the stem support 7 is about three quarters of this length.

Fig. 6 zeigt die fertig verlegte Brüke nach dem Absenken des Rampenteils 1' in bekannter Weise mittels des vollständig nach unten geschwenkten Verlegearms 8. Anschließend wird der Vorbauträger 7 in seiner Ausgangsstellung vor dem Verlegen zurückgefahren und, eine Unterspannung bildend, nach unten ausgefahren, was durch das Gelenk 10 ermöglicht wird.Fig. 6 shows the finished bridge after lowering the ramp part 1 'in a known manner by means of the installation arm 8 which is pivoted completely downwards. The stem support 7 is then retracted in its starting position before installation and, forming an undervoltage, extended downwards, what is made possible by the joint 10.

In die Zahnstangen 20 und 21 der Träger 11, 12 bzw. des Vorbauträgers 7 sind zwei fliegend gelagerte Ritzel 22 einrückbar, die gleichachsig an einem Antrieb 23 gegenüberliegend angeordnet sind. Der mit einem Antriebsmotor und einem Getriebe versehene Antrieb 23 ist um eine horizontale Achse 24 schwenkbar an der Verlegeeinrichtung 8 so angelenkt, daß die Ritzel 22 etwa in der Mitte zwischen den beiden Rollensätzen 18 und 19 liegen. Die Schwenkung um die Achse 24 wird durch hydraulische Hubzylinder 25 bewirkt, die einerseits an der Unterseite des Antriebs und andererseits an dem Verlegearm 8 angelenkt sind (Fig. 10). Das Fahrzeug A weist - wie das Fahrzeug B - auf der Oberseite seines am Front-Ende angeordneten Fahrerhauses 43, das auch den Fahrzeug-Antriebsmotor umschließt, Stützrollen 40 auf, deren Achsen quer zur Verschieberichtung verlaufen, und auf welche sich die Brückenabschnitte im Falle eines Durchhängens abstützen.In the racks 20 and 21 of the carrier 11, 12 and the stem carrier 7, two overhung pinions 22 can be engaged, which are coaxial with a drive 23 are arranged opposite one another. The provided with a drive motor and a gear drive 23 is pivoted about a horizontal axis 24 on the laying device 8 so that the pinion 22 are approximately in the middle between the two roller sets 18 and 19. The pivoting about the axis 24 is effected by hydraulic lifting cylinders 25, which are articulated on the one hand on the underside of the drive and on the other hand on the laying arm 8 (FIG. 10). Vehicle A, like vehicle B, has support rollers 40 on the upper side of its driver's cab 43, which also encloses the vehicle drive motor, the axes of which extend transversely to the direction of displacement, and on which the bridge sections in the case of a Support sagging.

Beim Verfahren einer Brückenhälfte bzw. der gesamten Brücke nach dem Zusammenkoppeln, wie es in Fig. 2 und 3 dargestellt ist, wird der Antrieb 23 nach unten verschwenkt, so daß die Ritzel 22 und die Zahnstangen 20 der Träger 11, 12 der Brückenabschnitte eingreifen. Für das Verfahren der gesamten Brücke genügt das Eingreifen des Antriebs des Fahrzeugs A. Danach wird der Antrieb 23 nach oben geschwenkt, so daß die Ritzel 22 in die Zahnstangen 21 des Vorbauträgers 7 eingreifen und dadurch dieser in Richtung über das Hindernis ausgefahren werden kann (Fig. 4).When moving a bridge half or the entire bridge after coupling, as shown in FIGS. 2 and 3, the drive 23 is pivoted downward, so that the pinion 22 and the racks 20 of the carrier 11, 12 of the bridge sections engage. The intervention of the drive of the vehicle A is sufficient for moving the entire bridge. The drive 23 is then pivoted upward so that the pinions 22 engage in the toothed racks 21 of the stem support 7 and can thereby be extended in the direction of the obstacle (FIG 4).

Nach dem Überspannen des Hindernisses durch den Vorbauträger 7 wird der Antrieb 23 zum Eingriff der Ritzel 22 in die Zahnstangen 20 der Brückenabschnitte 1, 2, ... wieder nach unten geschwenkt und die sich jetzt auf der Spitze des Vorbauträgers 7 einerseits und auf den Rollen 16 andererseits abstützende Brücke vollständig über das Hindernis 4 gefahren. Weitere Stützrollen 40 befinden sich auch auf dem Fahrerhaus 43 der Fahrzeuge A und B. Auf diesen Stützrollen stützt sich die Brücke lediglich beim Verfahren in horizontaler Richtung ab (Fig. 2 bis 4).After the obstacle has been spanned by the stem support 7, the drive 23 for engaging the pinions 22 in the toothed racks 20 of the bridge sections 1, 2,... Is again pivoted downward, which is now on the tip of the stem support 7 on the one hand and on the rollers 16 on the other hand, the supporting bridge is completely driven over the obstacle 4. Additional support rollers 40 are also located on the driver's cab 43 of vehicles A. and B. The bridge is supported on these support rollers only when moving in the horizontal direction (FIGS. 2 to 4).

Nachdem die Brücke auf dem jenseitigen Ufer des Hindernisses 4 ihre Endstellung erreicht hat, sind nur noch die Rollen 17 der am Verlegearm 8 außenliegend angeordneten Rollensätze 18 mit den Schienen 16 in Eingriff. Durch Verschwenken des Verlegearms 8 nach unten wird dann die Brücke hinter dem Fahrzeug am Ufer abgelegt, wobei die entsprechend schwenkbar gelagerten Rollensätze 18 die Richtung der Schiene 16 ständig beibehalten. Nach dem Ablegen wird das Fahrzeug A vorgefahren und damit von der Brücke entkoppelt. Nicht dargestellte Absenkvorrichtungen an beiden Enden der Brücke legen diese endgültig auf den beiden Ufern ab.After the bridge on the opposite bank of the obstacle 4 has reached its end position, only the rollers 17 of the roller sets 18 arranged on the outside of the laying arm 8 are in engagement with the rails 16. By pivoting the laying arm 8 downward, the bridge behind the vehicle is then deposited on the bank, the correspondingly pivoted roller sets 18 constantly maintaining the direction of the rail 16. After being put down, vehicle A is pulled up and thus decoupled from the bridge. Lowering devices (not shown) at both ends of the bridge finally place them on the two banks.

Nach dem Ablegen der Brücke wird der Vorbauträger 7 in die Ausgangslage, d.h. symmetrisch zur Brückenmitte, zurückgefahren. Durch die Verbindung in den Rollenführungen 14, 15 ist der Vorbauträger 7 mit der Brücke verbunden und trägt entsprechend seiner Höhensteifigkeit an der Last mit.After the bridge has been laid down, the stem support 7 is returned to the starting position, i.e. symmetrical to the middle of the bridge, retracted. Due to the connection in the roller guides 14, 15, the stem support 7 is connected to the bridge and supports the load in accordance with its height rigidity.

Eine erhebliche Vergrößerung der Brückensteifigkeit wird durch den Einsatz des Vorbauträgers 7 als Unterspannung bewirkt, wie es in Fig. 6 dargestellt ist. Zu diesem Zweck werden - bis auf die vier an den beiden Enden angeordneten Rollen 15' - sämtliche Rollen 15 des Vorbauträgers 7 so in ihre Ausnehmung 27 zurückgezogen bzw. versenkt, daß sie nicht mehr in die Schienen 14 eingreifen.A considerable increase in the bridge stiffness is brought about by the use of the stem support 7 as undervoltage, as is shown in FIG. 6. For this purpose - with the exception of the four rollers 15 'arranged at the two ends - all rollers 15 of the stem support 7 are retracted or sunk into their recess 27 such that they no longer engage in the rails 14.

Der durch das Versenken der Rollen 15 freigegebene Vorbauträger 7 kann sich nunmehr infolge des Gelenks 10 nach unten aus der Brücke herausbewegen. Danach wird im Bereich des Gelenks 10 die Abstützvorrichtung 33 mit dem Vorbauträger 7 einerseits und mit den Schienen 14 der Brückenabschnitte 1, 2, ... andererseits verbunden, und die Hydraulikzylinder 37 werden zur Verspannung der Unterspannung durch den Vorbauträger 7 ausgefahren.The stem support 7 released by the sinking of the rollers 15 can now move downward out of the bridge as a result of the joint 10. Then in In the area of the joint 10, the support device 33 is connected to the stem support 7 on the one hand and to the rails 14 of the bridge sections 1, 2,... On the other hand, and the hydraulic cylinders 37 are extended by the stem support 7 for tensioning the undervoltage.

Bei dem Ausführungsbeispiel nach den Fig. 12 bis 14 trägt das wieder mit einem Verlegearm 8 und einem Rahmen 3 versehene Fahrzeug A nur einen Rampenabschnitt 1, während ein weiteres Fahrzeug C, das nur dem Transport von Brückenteilen dient und zwei aufeinandergestapelte Innenabschnitte 2, 2' trägt, rückwärts an die Stirnseite des Fahrzeugs A heranfährt (Fig. 12).In the embodiment according to FIGS. 12 to 14, the vehicle A, which is again provided with a laying arm 8 and a frame 3, carries only one ramp section 1, while another vehicle C, which is only used for the transport of bridge parts and two stacked inner sections 2, 2 ' carries, drives backwards to the front of the vehicle A (Fig. 12).

Zum Koppeln werden die Abschnitte durch eine scherenartige, an ihren oberen Enden mit Stützrollen 41 versehene Hebeeinrichtung 42, die, wie aus Fig. 13 ersichtlich, auf dem Fahrzeug C angeordnet ist, leicht angehoben, bis der oben liegende und am Fahrzeugende leicht vorkragende Innenabschnitt 2 mit dem Rampenabschnitt 1 auf dem Fahrzeug A auf gleicher Höhe liegt. Nach dem Koppeln wird die Hebeeinrichtung 42 wieder abgesenkt und die gekoppelten Brückenteile bzw. - abschnitte 1 und 2 mit dem Verlegearm 8 zum Hindernis 4 hin verfahren. Danach wird der noch auf dem Fahrzeug C befindliche Innenabschnitt 2'mit der Hebeeinrichtung 42 so weit angehoben, daß er durch leichtes Rückwärtsfahren des Fahrzeugs C oder Vorfahren der gekoppelten Abschnitte 1 und 2 mit dem Innenabschnitt 2 gekoppelt werden kann. Nach dem Absenken der Hebeeinrichtung 42 wird das Fahrzeug C entfernt und ein auf einem weiteren ebenfalls eine Hebeeinrichtung 42 aufweisenden Fahrzeug D befindlicher Rampenabschnitt 1' mit dem Innenabschnitt 2' durch Herausfahren gekoppelt.For coupling, the sections are slightly raised by a scissor-type lifting device 42 provided with support rollers 41 at their upper ends, which, as can be seen in FIG. 13, is arranged on the vehicle C until the inner section 2 lying above and slightly projecting at the end of the vehicle with ramp section 1 on vehicle A is at the same height. After coupling, the lifting device 42 is lowered again and the coupled bridge parts or sections 1 and 2 are moved with the laying arm 8 towards the obstacle 4. Thereafter, the inner section 2 ′ still located on the vehicle C is raised with the lifting device 42 to such an extent that it can be coupled to the inner section 2 by slightly moving the vehicle C backwards or by advancing the coupled sections 1 and 2. After the lowering of the lifting device 42, the vehicle C is removed and a ramp section 1 ′ located on another vehicle D, which also has a lifting device 42, is coupled to the inner section 2 ′ by moving out.

Nachdem sich das Fahrzeug D entfernt hat, wird der Rahmen 3 des Fahrzeugs A ausgefahren und der Verlegevorgang wie beim Ausführungsbeispiel nach den Fig. 3 bis 6 durchgeführt.After the vehicle D has moved away, the frame 3 of the vehicle A is extended and the laying process is carried out as in the exemplary embodiment according to FIGS. 3 to 6.

Bei diesem Ausführungsbeispiel wird nur ein mit einer Verlegeeinrichtung versehenes Fahrzeug benötigt, und die übrigen Brückenteile können beliebig auf die einfacher ausgebildeten und damit billigeren "Hilfs"-Fahrzeuge verteilt werden. Ferner kann auf diese Weise die Ladehöhe der Fahrzeuge gering gehalten werden.In this exemplary embodiment, only one vehicle provided with a laying device is required, and the remaining bridge parts can be distributed as desired over the simpler and thus cheaper “auxiliary” vehicles. Furthermore, the loading height of the vehicles can be kept low in this way.

Claims (5)

  1. Portable bridge, which has at least three bridge sections - two ramp sections (1, 1') and at least one inside section (2, 2') - and a downwardly extensible lower span (7), said bridge sections (1, 1', 2, ...) being movable to allow longitudinal displacement on a relocation means (8), characterised in that the bridge sections (1, 1', 2, ...) are constructed as downwardly open U-shaped girders with lateral legs (11, 12); that launching girder sections, which are allocated to the bridge sections (1, 1', 2, ...) and may be connected at the same time as the bridge sections, are mounted centrally between the two legs (11, 12) to allow longitudinal displacement; that the launching girder (7) formed from the launching girder sections has at least one transverse joint (10); and that the downwardly extended lower span is formed by the launching girder (7).
  2. Bridge according to Claim 1, characterised in that for their longitudinal displacement relative to the bridge sections (1, 1', 2, ...), the launching girder sections have rolls (15, 15'), which are mounted equiaxially in pairs, engage in guide rails (14) arranged on the legs (11, 12) of the bridge sections (1, 1', 2, ...) and - with the exception of the rolls (15') arranged on the two ends of the launching girder (7) - are displaceable out of the guide rails (14) in the direction of their rotational axis and towards the interior of the launching girder (7).
  3. Bridge according to Claim 2, characterised in that for the displacement of the rolls (15) arranged equiaxially in pairs, a disengaging device with a double inclined guide means (28) is provided which is adjustable in height in the vertical longitudinal central plane of the launching girder (7) and may be operated from the outside.
  4. Bridge according to one of Claims 1 to 3, characterised in that the ends of the inside sections of the launching girder and bridge part forming the centre of the bridge may be connected to the two ends of a longitudinally adjustable support (33).
  5. Bridge according to Claim 4, characterised in that the support (33) is arranged to fold out in the launching girder part.
EP92116939A 1986-08-20 1987-08-07 Portable bridge Expired - Lifetime EP0523757B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3628273 1986-08-20
DE19863628273 DE3628273A1 (en) 1986-08-20 1986-08-20 INSTALLATION SYSTEM FOR A DISASSEMBLABLE BRIDGE
EP87111453A EP0256446B1 (en) 1986-08-20 1987-08-07 Positioning system for a dismountable bridge

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP87111453.4 Division 1987-08-07

Publications (3)

Publication Number Publication Date
EP0523757A2 EP0523757A2 (en) 1993-01-20
EP0523757A3 EP0523757A3 (en) 1993-03-03
EP0523757B1 true EP0523757B1 (en) 1995-09-27

Family

ID=6307802

Family Applications (2)

Application Number Title Priority Date Filing Date
EP87111453A Expired - Lifetime EP0256446B1 (en) 1986-08-20 1987-08-07 Positioning system for a dismountable bridge
EP92116939A Expired - Lifetime EP0523757B1 (en) 1986-08-20 1987-08-07 Portable bridge

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP87111453A Expired - Lifetime EP0256446B1 (en) 1986-08-20 1987-08-07 Positioning system for a dismountable bridge

Country Status (4)

Country Link
EP (2) EP0256446B1 (en)
DE (3) DE3628273A1 (en)
ES (2) ES2039384T3 (en)
NO (1) NO873263L (en)

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DE3814502C3 (en) * 1988-04-29 1995-08-03 Dornier Gmbh bridge
DE3837122C2 (en) * 1988-11-02 1997-09-11 Krupp Foerdertechnik Gmbh Method of assembling a collapsible bridge on a vehicle
DE3842373A1 (en) * 1988-12-16 1990-06-21 Gutehoffnungshuette Man Transporting vehicle for bridges or bridge sections of a dismountable bridge
DE3911266A1 (en) * 1989-04-07 1990-10-11 Krupp Industrietech LAYABLE BRIDGE AND SYSTEM FOR LAYING THE BRIDGE
DE3914441A1 (en) * 1989-05-02 1990-11-08 Krupp Industrietech AVAILABLE BRIDGE
FR2649425B1 (en) * 1989-07-05 1991-11-15 Cnim BRIDGE SYSTEM FOR CROSSING OBSTACLES SUCH AS BREACH
DE4009354C2 (en) * 1990-03-23 1995-11-23 Gutehoffnungshuette Man Detachable track carrier bridge with a stem carrier arranged between the track carriers
DE4022641A1 (en) * 1990-07-17 1992-01-23 Gutehoffnungshuette Man Wheel or chain-propelled vehicle for laying dismantlable bridge - has push frame fully extendable over at least one vehicle end
DE4303222A1 (en) * 1993-02-04 1994-08-11 Krupp Foerdertechnik Gmbh Laying vehicle for layable bridges
DE19524062C1 (en) * 1995-07-01 1996-09-12 Gutehoffnungshuette Man Bridge-laying vehicle using sections of different lengths
DE19610440C2 (en) * 1996-03-16 2000-03-23 Man Technologie Gmbh Device for assembling and laying track carrier and stem sections to form a bridge structure
DE19643810C2 (en) * 1996-10-30 1998-12-10 Krupp Foerdertechnik Gmbh Handling device for a bridge laying system
DE19701650C2 (en) * 1997-01-18 2001-08-16 Man Technologie Gmbh Laying device and method for laying dismountable bridges
DE19750490A1 (en) * 1997-11-14 1999-05-27 Ewk Gmbh Bridge element for the formation of bridges which can be laid by means of a laying vehicle
DE10307858B3 (en) * 2003-02-25 2004-06-09 Dornier Gmbh Transportable bridge structure has end sections compensating length differences between modular longitudinal supports and suspension arcs
CN108487089B (en) * 2018-04-03 2019-08-02 锦州铁道勘察设计院有限公司 A method of railroad bridge is removed and set up on hillside
RU2758315C1 (en) * 2020-12-21 2021-10-28 Федеральное государственное бюджетное учреждение "Центральный научно-исследовательский испытательный институт инженерных войск имени Героя Советского Союза генерал-лейтенанта инженерных войск Д.М. Карбышева" Министерства обороны Российской Федерации Folding block of collapsible bridge

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DE2324646C3 (en) * 1973-05-16 1982-01-28 Fried. Krupp Gmbh, 4300 Essen Method for assembling a bridge and bridge to be assembled according to the method, in particular bridge that can be dismantled
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Also Published As

Publication number Publication date
NO873263D0 (en) 1987-08-05
EP0256446B1 (en) 1993-04-21
DE3785515D1 (en) 1993-05-27
ES2039384T3 (en) 1993-10-01
EP0523757A2 (en) 1993-01-20
DE3751547D1 (en) 1995-11-02
ES2077319T3 (en) 1995-11-16
EP0523757A3 (en) 1993-03-03
NO873263L (en) 1988-02-22
EP0256446A2 (en) 1988-02-24
EP0256446A3 (en) 1989-07-26
DE3628273A1 (en) 1988-03-03

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