EP0449064A1 - Bridge-laying apparatus - Google Patents

Abstract

Laying vehicle for a bridge consisting of couplable bridge elements with a laying beam (V), a carriage (S) that can be moved on it and a swiveling lifting table (HT) on which the bridge elements are mounted (bridge stacking device BST), with a holding device (V) on the laying beam (V) HB) is provided for locking the coupled bridge elements and the slide (S) can lift the entire bridge off the laying beam (V) and move it. This means that there are no rollers or rails for moving the bridge. <IMAGE>

Description

The invention relates to a laying device for a bridge consisting of couplable bridge elements according to the preamble of claim 1.

From DE-OS 38 14 502 a laying vehicle for a bridge consisting of couplable bridge elements is known, which has an extendable and pivotable laying beam, a carriage movable thereon and a lifting table on which the bridge elements are mounted. This device forms the preamble of claim 1. The bridge elements are brought into the intended shape by the lifting table, coupled to the previously erected bridge elements and moved on the laying beam over the obstacle. No details are given there.

From DE-OS 29 26 594 a bridge laying vehicle is known which has a longitudinally displaceable bridge support with which the bridge can be moved forwards and backwards, whereby the axle load of the vehicle can be changed.

The object of the invention is to provide a laying device with which even longer bridges can be laid without a beam.

This object is achieved according to the invention by a laying device with the features of claim 1. Embodiments of the invention are the subject of subclaims.

According to the invention, a carriage or carriage that rolls on the laying beam is provided with a lifting table that holds the bridge, moves up to the next coupling point, and can set down on the laying beam. Then the next bridge part can be coupled with the sled, the parts that have been completed so far or the entire bridge can be raised and moved to the deposit point. The lifting table according to the invention makes it possible to dispense with rollers or rails on the bridge or to guide the bridge on the laying beam.

As a result, all the elements that are normally required to move the bridge (e.g. rollers, rails, drive) are no longer part of the bridge, but are integrated into the laying system, which has a very favorable effect on the required standing moment, since the bridge is now designed to be lighter can.

With the laying device according to the invention it is possible to lay different types of bridges with only minor changes. Since no rollers or rails are required for the bridge, the bridges do not have to be specially adapted to the laying vehicle. This makes it possible to assemble and lay different bridges of greater length.

The laying device according to the invention also allows a bridge that is variable in height, such as e.g. the telescopic truss bridge of DE-OS 38 14 502 to unfold, to assemble and to lay. The substructure of the bridge is held on the slide and the road plates are brought to the required height by the hydraulic cylinders (with length measuring system) of the lifting table, the telescopic diagonals being pulled apart and then locked from the lifting table.

The version in which the slide and the lifting table have a common pivot axis in their rear region is particularly simple and stable, e.g. a fixed swivel at the rear edges of the two components. The possibility of movement of the lifting table in this embodiment with respect to the slide consists in swiveling upwards to e.g. 15 °, e.g. through two hydraulic cylinders.

In a further embodiment of the invention, a support system is provided on the pivotable laying beam, which can be pivoted and extended relative to the laying beam. By extending the long laying beam with the support system at the front, the standing moment can be increased significantly by the large lever arm without the weight of the vehicle having to be increased, since the vehicle now acts as a counterweight. As the weight of the bridge is reduced due to the omission of the usual rollers or rails on the bridge, the standstill is further increased, which increases the ability to lay longer bridges.

The invention offers the following advantages:
Generation of a high level of torque of the publisher without the weight to increase the publisher.

Reduction of the bridge weight by taking over the bridge shifting devices and the bridge erection devices from the bridge into the laying system.

Possibility of laying a 40 m bridge (e.g. telescopic truss bridge) with a dead weight of ∼ 14 to, which consists of four segments (= eight bridge elements). The bridge can be transported on a vehicle and deployed from one vehicle to different heights, assembled and relocated.

It is also possible to lay the four segments individually as shorter bridges or e.g. two segments as longer bridges and the other two as single bridges.

Since all active elements are integrated into the laying system in this laying device, the laying process can be automated very well.

The invention is described in more detail with reference to ten figures.

Fig. 1

eine Verlegeeinrichtung in Transportstellung,

Fig. 2

eine Verlegeeinrichtung in Arbeitsstellung,

Fig. 3

die drei Ansichten eines Schlittens mit Hubtisch,

Fig. 4

die drei Ansichten eines Verlegebalkens,

Fig. 5

eine Verlegeeinrichtung mit Fahrzeug und vier Brückensegmenten,

Fig. 6

ein Brückensegment,

Fig. 7 und 8

ein Verlegeverfahren einer 40 m Brücke,

Fig. 9

eine Szene des Verlegeverfahrens und

Fig. 10

eine Verlegeeinrichtung in Arbeitsstellung.

Show it:

Fig. 1

a laying device in the transport position,

Fig. 2

a laying device in the working position,

Fig. 3

the three views of a slide with lifting table,

Fig. 4

the three views of a laying beam,

Fig. 5

a laying device with vehicle and four bridge segments,

Fig. 6

a bridge segment,

7 and 8

a laying process of a 40 m bridge,

Fig. 9

a scene of the laying process and

Fig. 10

a laying device in the working position.

Fig. 1 shows a laying device according to the invention (laying vehicle) in the transport position. You can see the lifting table HT, the slide S, the laying beam V, the support system ST, the rollers L of the slide S and the bridge stacking device BST on the lifting table (HT). The laying beam V is attached to the vehicle with a telescopic support in such a way that it can be moved forwards and / or swiveled downwards to the front.

• Verlegebalken V,
• Stützanlage ST,
• Schlitten S,
• Hubtisch HT.

Fig. 2 shows the laying device of Fig. 1 in the working position without bridge segments (bridge parts). It is an independent system that is connected energetically and via four mechanical fixed points to a tank as a laying vehicle. The laying system essentially consists of

• Laying beam V,
• Support system ST,
• Sledge S,
• HT lifting table.

• Hebelarm zur Erzeugung eines hohen Standmomentes,
• Träger für Schlitten S mit Hubtisch HT,
• Absetzeinrichtung für fertige Brückensegmente,
• Schwenkarm zum Ablegen und Aufnehmen der Brücken, bzw. zum Ausgleichen von unterschiedlichen Uferhöhen.

The laying beam V is connected to the tank and has the following functions:

• Lever arm for generating a high standing moment,
• Carrier for slide S with lifting table HT,
• Set-down device for finished bridge segments,
• Swivel arm for storing and picking up the bridges or for compensating for different bank heights.

The laying beam V consists of a pair of welded metal profile beams (e.g. aluminum), which are connected to each other via a torsion-resistant truss structure in the front part.

The front hydraulic support system ST is also located in the front part, pivotably connected to the laying beam V. In the rear area of the tank, the pair of bars is connected to the tank via a roller guide. A pair of rollers, arranged approximately in the middle of the tank, can be lifted using a hydraulic cylinder (telescope T), while the pair of rollers in the front area of the tank are firmly connected to the chassis. In conjunction with the front support system ST, the swiveling can be realized.

The laying beam V is brought into the extended position shown in FIG. 2 only for bridge construction. For transport, the laying beam system can be moved back over the tank until approximately the same protrusion is reached. The pair of rollers in the vicinity of the rear support system is provided for receiving the laying beam V in the transport position. As a drive for the movement in the two positions, e.g. hydraulically driven winch pairs with pre-tensioned ropes can be provided.

The hydraulic lines and the voltage supply for the valves and sensors of the two front support cylinders with their swivel drives and for the hydraulic motors of the cable winches are installed in the laying beam V protected. The supply lines in the laying beam V are flexibly connected to the tank. It is possible to use energy drag chains or a hose reel with a hydraulic motor.

In the figure, the laying beam V is moved all the way forward and the support system ST is pivoted out and extended. The carriage S is in front position. The HT lifting table is pivoted upwards as far as the slide. The holding device HB for the bridge can also be seen, with which bridge elements which have already been coupled together can be locked on the laying beam V. Not shown is a second holding device which can lock the lower chords of the bridge elements or the entire bridge elements on the slide S.

Fig. 3 shows an embodiment of a carriage in which the lifting table can be pivoted by two hydraulic telescopes. The axis of rotation of the lifting table HT on the slide S is in the rear area of the slide S and the lifting table HT. A telescopic cylinder can be seen on the bridge stacking device BST, which serves to lift the bridge stack and as a transport lock.

In the right and in the lower part of the figure, the rollers LR of the carriage S can be seen, with which the carriage S can be moved on the laying beam V. There are two sets of rollers on each side, in the embodiment shown in FIG. 2 there are four sets of rollers on each side. The S slide and the HT lifting table are designed as a lightweight structure in the framework structure.

The carriage S is used to transport the bridge parts in the longitudinal direction on the laying beam V and extends the bridge construction level to the rear. This means that no separate roles are required for the bridge. The carriage S is guided on appropriately designed rails (rails SS of FIG. 4) of the laying beam V. For this purpose, stable sets of LR rollers are housed in a rigid U-profile on both sides of the slide frame. The moments of the bridge in the installation case must also be taken from this profile.

The HT lifting table is articulated to the laying carriage S at four points. The rear joint of the HT lifting table on the slide frame consists of two fixed swivel joints. On the front part of the carriage S, the lifting table HT is connected to the carriage frame via two hydraulic cylinders. These are used to straighten the bridge segments and raise the bridge. The bridge segments rest on the HT lifting table as a stack for laying or taking up again. The lower segment is built up or merged with it. The bottom segment has to be pulled out of the bridge stack for erection. For this purpose, the remaining bridge stack is raised. This is the task of the BST bridge stacking unit, which is firmly connected to the HT lifting table. A hydraulic cylinder is articulated on the frame of the bridge stacking unit BST and pulls the remaining bridge stack. Another function of the bridge stacking unit BST is the anchoring of the bridge stack during transport or as a fixed point of the remaining bridge stack during laying
All of the drives required to erect and lock the elements are located on the S slide and the HT lifting table. A purely hydraulic drive concept is possible.

The energy supply for the slide S and the lifting table HT can be completely separated from that of the laying beam V. The supply from the vehicle to the slide can also be implemented here, as described for the laying beam V, via a hose line. The distribution to the consumers then takes place from the carriage S.

FIG. 4 shows an embodiment of a laying beam V. In the partial images on the right (enlarged view Y, section BB), the rails SS for the rollers LR of the carriage S in the upper region and in the lower region the supports and the rails SV for the vehicle-fixed roles on the vehicle chassis and on the telescope T (Fig. 5).

Fig. 5 shows a laying device, which is loaded with four 10 m bridge segments B, for laying bridges with spans between 10 and 40 m. The bridges correspond to the bridges described in DE-OS 38 14 502. It can be seen that the bridge segments B each consist of two bridge elements which are rotatably connected to one another. The bridge segments B are anchored at one of their ends in the bridge stacking device BST. Ramp parts R are fastened on both sides of the bridge segments B. The laying beam V is slidably mounted on a first set of rollers in the front area of the vehicle and on a set of rollers at the rear of the vehicle. Its inclination can be adjusted by the telescope T in the middle of the vehicle. For this purpose, rollers attached to the telescope T engage the rails SV of the laying beam V shown in FIG. 4.

6 shows two bridge segments B, each consisting of two bridge elements. In the upper partial image, bridge segment B is shaped as a 10 m short bridge. In the lower part of the picture, the bridge segment B forms a part (ramp part) of a long bridge. The bridge elements each consist of the carriageway slabs F, the telescopic diagonals D, the extendable or shortenable lower chords U and the ramps R. The left ramp R is shown in the working position (as a ramp), the right ramp R in the lower diagram in the coupling position to the rear moved so that the corresponding lower flange U can be connected to the lower flange U of the next bridge segment.

01

Verlegebalken V mit vorderer Stützanlage ST und unterem ersten Brückensegment B1 vorfahren.

02

Brückenstapel mit Hubtisch HT anheben, wobei die Untergurte des ersten Brückensegments B1 am Vorbauträger V festgehalten werden. Dadurch wird das erste Brückensegment B1 aufgerichtet. Erste und zweite Diagonale D1, D2 verriegeln und vordere Stützanlage ST ausfahren. Die am Fahrzeugheck vorgesehene zweite Abstützanlage für das Fahrzeug ist hier nur schematisch gezeigt. Mit ihr kann das Fahrzeug stabilisiert und der Verlegebalken V in eine waagrechte Lage gebracht werden.

03

Restbrückenstapel mit Schlitten S weiter zurückfahren, wobei der Hubtisch etwas abgesenkt werden kann, damit das zweite Brückenelement des ersten Brückensegments D1 leichter herausrutschen kann. Die restlichen Brückenelemente sind mit der Brückenstapeleinrichtung etwas angehoben. Das erste Brückensegment B1 ist nun fertig.

04

Restbrückenstapel mit Schlitten S weiter zurückfahren, Hubtisch HT absenken, Untergurt des unteren zweiten Brückensegments B2 am Schlitten S arretieren, Hubtisch HT wieder anheben und vierte Diagonale D4 verriegeln.

05

Schlitten mit Restbrückenstapel gegen fertiges erstes Brückensegment B1 fahren, dabei schieben sich die nicht benötigten Rampen über den Untergurt, Fahrbahn und Untergurt kuppeln.

06

Untergurt des ersten Brückensegments B1 am Verlegebalken V lösen, fertiges Brückensegment B1 mit angekuppeltem Brückensegment B2 mit Hubtisch HT etwas anheben und Schlitten S mit gesamter Brücke vorfahren.

07

Untergurt von Brückensegment B2 am Verlegebalken V festhalten und am Schlitten loslassen, Schlitten S mit Restbrückenstapel bis zum dritten Fahrbahngelenk G3 zurückfahren, Hubtisch HT anheben und Diagonalen D5 und D6 verriegeln.

08

Die Vorgänge wiederholen sich mit den beiden restlichen Brückensegmenten sinngemäß in der Reihenfolge der Schritte 6, 7 und 4, bis die ganze Brücke aufgerichtet ist. Dann wird die ganze Brücke vom Hubtisch HT etwas angehoben.

09

Brücke mit Schlitten vorfahren und durch Absenken des Hubtisches HT und des Verlegebalkens V am Gegenufer ablegen.

10

Schlitten S und Verlegebalken V zurückfahren, bis die Brücke auf dem Verlegebalken V gerade noch aufliegt. Verlegebalken V neigen und Brücke am Ufer ablegen.

7 and 8 show ten main steps of a laying process of a 40 m bridge with the laying device according to the invention. The steps mean

01

Advance laying beam V with front support system ST and lower first bridge segment B1.

02

Lift the bridge stack with the HT lifting table, the lower chords of the first bridge segment B1 being held on the stem support V. The first bridge segment B1 is thereby erected. Lock the first and second diagonals D1, D2 and extend the front support system ST. The second support system for the vehicle provided at the rear of the vehicle is shown only schematically here. With it, the vehicle can be stabilized and the laying beam V can be brought into a horizontal position.

03

Drive the remaining bridge stack further with the carriage S, whereby the lifting table can be lowered somewhat so that the second bridge element of the first bridge segment D1 can slide out more easily. The remaining bridge elements are slightly raised with the bridge stacking device. The first bridge segment B1 is now complete.

04

Drive the remaining bridge stack further with the S carriage, lower the HT lifting table, lock the lower flange of the lower second bridge segment B2 on the S carriage, raise the HT lifting table again and lock the fourth diagonal D4.

05

Drive the sled with the remaining bridge stack against the finished first bridge segment B1, thereby pushing the ramps that are not required over the lower flange, roadway and lower flange.

06

Loosen the lower flange of the first bridge segment B1 on the laying beam V, Raise finished bridge segment B1 with coupled bridge segment B2 with lifting table HT a little and move carriage S with the entire bridge.

07

Hold the lower chord of bridge segment B2 on the laying beam V and let go of the sled, move the sled S with the remaining bridge stack back to the third road joint G3, raise the lifting table HT and lock the diagonals D5 and D6.

08

The processes are repeated with the two remaining bridge segments in the order of steps 6, 7 and 4 until the entire bridge is erected. Then the entire bridge is raised slightly by the HT lifting table.

09

Advance the bridge with a sledge and place it on the opposite bank by lowering the HT lifting table and the laying beam V.

10th

Move carriage S and laying beam V back until the bridge is just resting on laying beam V. Tilt the laying beam V and place the bridge on the bank.

Fig. 9 shows a scene of the laying of the 40 m bridge at the time of coupling the last bridge segment. The frame-shaped structure of the laying beam V, the front and the rear support system ST for the vehicle and the bridge stacking device BST can be seen.

In principle, any vehicle (armored or wheeled vehicle) can be used as a laying vehicle if it can take the minimum payload of approx. 20 t. The figures for the Leopard II are shown in the figures. In the event of relocation or readmission, the vehicle must be able to compensate the bank inclinations lengthways and crossways. For this, the rear armored support system and the support system ST of the laying beam V are used. The here hydraulic cylinders arranged in pairs act on a common footplate. The vehicle is lifted from its springs and brought up to level. If a series vehicle is modified as a laying vehicle, it must essentially be taken into account that the forces can be introduced into the structure via the four fixed points from the laying system and that of the rear vehicle support system. In Fig. 9, the first three bridge segments (consisting of the first six bridge elements) are fully assembled and locked on the laying beam V with the holding device HB. The HT lifting table has built up the fourth segment. The carriage S advances for coupling.

Due to the required laying speed and the large number of drives that have to be operated in time and in a certain sequence with respect to one another (FIGS. 7 and 8) and the large variety of bridge combinations, it can be seen that the control is best carried out via a computer.

Fig. 10 shows an embodiment in which the lifting table HT2 has, in addition to the attachment to the slide S, a further horizontal axis of rotation through which the table surface can be bent, so that the front part e.g. can run horizontally or slightly downwards while the rear part of the table is raised. This can make it easier to pull out bridge elements.

Claims (4)

Laying device for a bridge consisting of couplable bridge elements with an extendable and pivotable laying beam (V), a slide (S) which can be moved thereon with a pivotable lifting table (HT) on which the bridge elements are mounted (bridge stacking device BST), characterized in that on the laying beam (V) a holding device (HB) is provided for locking the previously coupled bridge elements, that a holding device is provided on the slide (S) for locking the bridge element to be installed and that the slide (S) lift the entire bridge off the laying beam (V) and can move. Laying device according to claim 1, characterized in that the lifting table (HT) can be pivoted relative to the slide (S) about an axis lying in the rear region of the two components. Laying device according to claim 1 or claim 2, characterized by a pivotable and extendable support system (ST) on the laying beam (V). Laying device according to one of the preceding claims, characterized in that the lifting table (HT2) has a horizontally extending joint, so that its front part can be brought into a horizontal position when the lifting table (HT2) is raised.

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