RU2702487C2 - Overlapping device for movable bridge and movable bridge, having such shutoff device - Google Patents

Abstract

FIELD: construction.SUBSTANCE: invention relates to shutoff device for covering clearance in connection (2) between stationary element (3) and movable element (4) of movable bridge (5). Overlapping device (1) has transition structure (6) with at least one movable beam (7).EFFECT: movable beam (7) has at least one positioning device (8), which makes it possible to install movable beam (7) in specified position in gap (2) in connection.22 cl, 5 dwg

Description

The present invention relates to an overlapping device for closing the gap in the connection between the stationary element and the movable element of the movable bridge.

In this case, the term "movable bridge" means a bridge whose load-bearing structure is capable of moving in whole or in part. Typically, movable bridges are used to temporarily increase or even open a gap under the movable part of the bridge. To increase or open the lumen, the movable bridge element is at least partially separated from the stationary bridge element and, depending on the type of bridge, is lifted (drawbridge), folded (drawbridge) or rotated in a horizontal plane (swing bridge). In addition to the bridges mentioned above, there are a number of other movable bridges to which the present invention also relates.

In the closed state, a gap is formed between the movable element and the stationary bridge element. It must have a predetermined size in order to compensate for the movement of the components relative to each other in order to prevent contact and thereby stresses under tension, compression or torsion between adjacent components. Accordingly, the size of the gap in the connection of the bridge structural elements is chosen so that the components do not come into contact during their operation. Therefore, the gap in the connection can be relatively large and vary greatly depending on the load on the bridge.

In stationary bridges, the gap in the connection is blocked by a blocking device. Due to this, the possibility of safe crossing of large gaps in the joints is also guaranteed, that is, pedestrians do not fall into them and the wheels of vehicles do not fall into them. This overlapping device to a certain extent provides the most continuous transition between the component parts. Due to this, their maximum soft crossing by vehicles is also ensured.

In contrast, the gap in the junction of known movable bridges usually remains open, i.e. there is no overlapping device in the gap or to us. This is due to the rarity of movable bridges, partly due to their smaller size and the fact that they are often crossed at low speeds. Accordingly, the size of the gap in the joint is often small in any case, and noise pollution at lower speeds is lower.

As an alternative to open clearances in joints, sometimes overlapping devices in the form of so-called tenon joints are also used. They have two engaging spike plates. One stud plate is attached to the stationary component, and the other to the movable element. Accordingly, it moves with the movable element of the bridge. When the bridge is closed, the spike plates engage, as a result of which the gap in the joint partially overlaps.

As in the case of the gap remaining in the joint, and in the case of studded joints, the maximum gap size that can be closed is limited so that vehicles do not go too deep into it, or because the plate spikes cannot be arbitrarily long.

Accordingly, the present invention is based on the task of creating an overlapping device that allows you to overlap both small and large gaps in the joints of movable bridges.

The solution to this problem is achieved by the device according to p. 1 and a movable bridge according to p. 22 of the claims. Applicable improvements to the invention are described in the independent claims.

Accordingly, the overlapping device according to the invention differs from the devices known from the prior art in that it comprises a transition structure having at least one movable beam and at least one positioning device for installing at least one movable transition beam to a predetermined position in the gap in the connection between the stationary and movable bridge elements after moving the movable bridge element.

In this case, the term “transition structure” means a part of an overlapping device that ultimately compensates for the relative movement of the components when the bridge is closed. On the other hand, the term "overlapping device" means the entire unit with components on the stationary and movable elements of the bridge.

In this case, the term "movable beam of the transition structure" means a beam of any type that is capable of moving relative to the transition structure. The movable beam may be part of the transition structure. However, it can also be additionally located on the transition structure. The movable beam can also be composed of many components.

The overlapping device has a positioning device for moving the movable beam to the desired position when the bridge is closed. In this case, the term "positioning device" means a device of any type that allows you to set the movable beam in a predetermined position. For example, this can be done mechanically, but also hydraulically or electrically.

The approach to solving the problem of the invention is based on the idea of using transition structures, such as, for example, rotary transverse transition structures, also in movable bridges. Due to such complex transition structures, it also becomes possible to overlap the gaps in the joints formed with large sliding and / or slopes. The solution according to the invention provides significant advantages over the stud connection also in the case of transverse sliding / displacement. Accordingly, it is also very applicable in the case of long or also wide bridges.

The positioning device has a corresponding trunnion. In this case, the term “pin” means a rod or spike of any type that, due to its shape and physical contact with another element of the bridge, is capable of specifically aligning the positioning device mechanically.

In addition, it is advantageous for the positioning device to have at least one pin guide, preferably in the form of a funnel. Such a mechanically designed positioning device can be manufactured at low cost and is fault tolerant and resistant to contamination. When the trunnion engages with the guide, preferably a horizontal force occurs, which ultimately provides positioning. In this case, the trunnion and the guide may have arbitrary shapes without being limited to a funnel-shaped or rounded shape. However, the advantage of the funnel-shaped design is the possibility of easy positioning in the transverse and longitudinal directions.

Accordingly, the trunnion and / or the guide have at least one friction reducing support, preferably a slide made of sliding material and / or a roller. In this case, the term "bearing element" means any device that reduces friction between the journal and the guide. The advantage of the sliders over the rollers is their ability to also redistribute higher loads between the pin and the guide. To ensure sliding between the pin and the guide, many pairs of mating materials can be used, such as, for example, plastic-plastic, plastic-metal, metal-metal, ceramic-metal, etc.

On the other hand, when using the roller as a load-bearing element, a particularly low wear-causing contact between the pin and the guide is provided. In this case, the rollers themselves can rely on ball bearings, roller bearings, plain bearings, etc.

The positioning device may also be advantageously equipped with at least one means of lateral alignment and / or at least one means of longitudinal alignment. The term "transverse centering means" means a device that orientates the movable beam mainly transversely to the extension of the bridge. It is necessary, for example, when shifting the movable bridge element in the transverse direction as a result of opening and closing, for example, due to tolerances in the support. The same applies to the longitudinal centering device, except that in this case the displacements of the movable beam in the longitudinal direction are predominantly compensated, for example, due to thermal deformations of the movable bridge element in the longitudinal direction. The lateral alignment means and / or the longitudinal alignment means can be grouped into one device, or the lateral alignment means and the longitudinal alignment means can be provided as two separate devices. The functional combination of the transverse centering device and the longitudinal centering device can be realized, for example, by means of a cylindrical pin that engages with a funnel as a guide. The advantage of this grouping is the reduction in the number of parts, which is especially cost-effective. By separating the transverse centering device and the longitudinal centering device, it is possible to optimally adapt the positioning device to the relevant requirements, such as corresponding offsets.

It is advantageous if the positioning device is designed in such a way that a predetermined, in particular, minimum edge gap is formed between the stationary bridge element and the transition structure. The smaller the edge gap at the closed bridge, the less the roadway is disturbed. Accordingly, for example, the noise generated when crossing the edge gap is minimized. In addition, with a minimum edge gap, the penetration of moisture and dirt into the overlapping device is reduced.

The positioning device can also be advantageously equipped with at least one shock absorbing device. The term “cushioning device” means a device that is capable of damping forces, in particular horizontal forces and / or moments of forces that do not necessarily occur between the movable beam of the transition structure and the stationary element of the bridge. In this case, the shock-absorbing device consists of at least one force-transmitting element located on the movable beam, for example, in the form of a spacer, which is in contact with at least one shock-absorbing element attached to the stationary element of the bridge when the bridge close. Accordingly, the horizontal forces arising when the bridge is closed can be transmitted by a movable beam or transition structure to the stationary element of the bridge without deforming the positioning device. In particular, the shock absorbing device may also consist of several parts. Accordingly, the positioning device can actually be embedded in a shock absorbing device.

The shock-absorbing device itself can be advantageously equipped with at least one shock-absorbing lateral force support and / or at least one shock-absorbing longitudinal force support. The term "shock absorbing lateral forces bearing" means a bearing, which, in particular, absorbs forces and moments of force transverse to the direction of extension of the bridge. Such lateral forces can be generated, for example, by lateral wind loads. The same applies to the shock absorbing longitudinal force support, which absorbs the longitudinal forces arising, for example, when driving or braking vehicles. Due to the functional separation of the shock-absorbing longitudinal and transverse forces of the bearings, it becomes possible to best set the dimensions of both the shock-absorbing lateral forces of the bearings and the shock-absorbing longitudinal forces of the bearings depending on the forces arising. For example, with large lateral forces and small longitudinal forces, a corresponding large shock absorbing lateral force bearing and a small shock absorbing longitudinal force bearing can be used. However, the combination of a shock absorbing lateral support force and a shock absorbing longitudinal support force provides particular cost effectiveness since the number of parts of the overlapping device is limited.

In the case of lower perceived loads, the shock absorber and the positioning device can be functionally combined in one device. In this case, the term “functional union” means that a positioning device, for example, is capable of, in addition to setting the movable beam to a predetermined position, also absorb the perceived load at this point, for example, during operation of the bridge. For example, such a functional union can be achieved by suitably designed trunnions, supporting elements or guides. Accordingly, first the contact surface of the journal and the guide is used to set the movable beam in a predetermined position, and then it can absorb the perceived load. For example, rings may be provided on the trunnion.

In addition, in particular in the case of medium and high perceived loads, it may be advantageous for the shock absorber and the positioning device to be functionally separated in the various devices. It is understood that the components responsible for positioning, when the bridge is closed, no longer have to absorb the perceived loads. Instead, these loads are taken over by a shock-absorbing device that is specially used and has the specified dimensions for this. This can be applicable only at medium and high perceived loads, since it is no longer possible or uneconomical to use a trunnion, guide or carrier element of the corresponding large size. In this case, it is more economical to separate the positioning function and the force transfer function.

In this case, it may be convenient for the overlapping device to have at least one means of creating a certain distance between the pin and the guide in the state when the shock-absorbing device is in operation. For example, this means may be a hydraulic system and appropriately designed contact surface geometry. Due to this, the pin and the guide do not touch while the bridge is closed. Accordingly, it is guaranteed that the perceived load, which could overload and thereby deform the pin, is perceived by the shock-absorbing device.

It may be convenient for the transition structure to be a rotatable transverse transition structure. The pivoting transverse transition structure is a device in which several lamellas extending transversely to the direction of movement are rotatably attached to each other on at least one pivoting transverse element. Accordingly, the transverse transverse transition structure is especially applicable for complex and complex movements, as well as earthquake-threatened structures.

It may also be advantageous for the at least one movable beam of the overlapping device to be a pivot transverse element of a pivot transverse transition structure. In this case, the pivoting transverse element is positioned directly by the positioning device.

It may also be advantageous for the transition structure to be a central beam transition structure. The lamellas of the central beam transition structure, also called central beams, are located not on the rotary transverse elements, but on the transverse elements, which are able to move in the longitudinal direction, and often pass parallel to the direction of movement. In this case, the length of the lamellas can be adjusted so that the lamellas are pulled together as a chain when they are smoothly shifted to each other, or moved apart by connecting straps absorbing the tensile force that connects the lamellas to each other. This design guarantees a long service life and ease of maintenance, which makes it particularly economical.

It may be advantageous for the at least one movable beam to be an edge beam, a transverse element and / or a central beam transition structure. Accordingly, the positioning device is located directly on these elements, which makes additional elements redundant.

It may also be advantageous for the at least one movable beam to be a lifting beam of a transition structure. The term "lifting beam" means a beam that is provided in addition to the transition structure and on which the transition structure is at least partially supported when it is not connected to the stationary element of the bridge. Such a lifting beam could be required only when using large and heavy transition structures, such as rotary transverse elements. Since rotary transverse elements have not yet been used in movable bridges, their dimensions do not actually allow the load of the transition structure to be absorbed in a state when it has supports on one side. Accordingly, it is possible to appropriately adapt the dimensions and bearing capacity of existing beams, such as pivoting transverse elements or normal transverse elements, or to use a separate lifting beam. In this case, depending on the load, a more economical solution is chosen.

It may be advantageous to have a beam support on the movable bridge member, at least for the movable beam, into which the corresponding movable beam is guided. The beam support, with regard to its degrees of freedom, can be adapted to the transition structure. That is, the movable beam can only move in the directions that the transition structure allows. The beam support does not allow movement in other directions in order to prevent damage to the transition structure.

It is useful that the overlapping device is waterproof. This is achieved, for example, through the use of connecting straps between the lamellas. Due to this, leakage of rainwater or salt water in the winter between the bridge elements and its uncontrolled runoff from the bridge is prevented. In this case, it may be convenient that at least one downpipe is located in the edge gap and / or guide. Even with a minimal edge gap, a small amount of water can still seep into the gap. Such leaking water can be purposefully diverted through a downpipe, such as, for example, a street gutter under an edge gap. The guide of the positioning device can also come in contact with moisture when the bridge is open. Accordingly, for example, rainwater can seep into the funnel of the guide. A drainpipe may also be provided at this location.

It may be advantageous for the transition structure to be on a stationary bridge element. If the movable bridge is, for example, a movable bridge, the transition structure does not have to move with the movable bridge element. In this way, in particular in drawbridges, full contact is prevented, which would lead to noise pollution. In addition, with such a strong shift of the transition structure, future positioning is difficult. In addition, the weight of the movable part of the bridge would increase, which is unfavorable for supports and drives.

On the other hand, it may also be advantageous for the transition structure to be on the movable element of the bridge. This, for example, concerns the case when there is little available space on the stationary element for embedding the transition structure. Only in the case of a drawbridge or swing bridge, in which the movable part moves only in one plane, is the shift of the transition structure not expected during movement.

As already mentioned above, the invention relates not only to a blocking device as such, but also to a movable bridge equipped with a blocking device according to the invention. In this case, movable bridges of any type are possible, such as, for example, movable bridges, swing bridges, drawbridges, etc.

The invention is further explained in detail using the examples illustrated in the drawings. In the drawings:

in FIG. 1 schematically shows a drawbridge according to the invention;

in FIG. 2 shows a longitudinal section through a first example of a blocking device according to the invention in a state where the movable bridge element is lowered to the stationary bridge element;

in FIG. 3 shows a longitudinal section through a second example of an overlapping device according to the invention according to;

in FIG. 4 is a plan view of part of a third example of an overlapping device according to the invention;

in FIG. 5 shows a longitudinal section along line AA in FIG. four.

In the figures, the same positions denote the same elements of different embodiments.

In FIG. 1 schematically shows a drawbridge 5 according to the invention, having two stationary elements 3 and an intermediate movable element 4, which can be raised and lowered. In the raised state, the clearance under the movable element 4 of the bridge is increased, i.e. overall height of the bridge is greater. On the other hand, in the lowered state, the overall height of the bridge is limited by its movable element 4. In the lowered state of the movable element 4, there are gaps 2 in the joints between the movable element 4 and the stationary element 3 of the bridge. Each of these gaps 2 in the joints 2 is covered by a blocking device 1 according to the invention, which cannot be seen in FIG. 1 due to image scale.

In FIG. 2 is a cross-sectional view of such an overlapping device 1 according to a first embodiment of the invention. In a sectional view, the movable member 4 of the bridge is omitted. The overlapping device 1 has a transition structure 6, a movable beam 7 and a positioning device 8.

In order to absorb the weight of the structure of the transition structure 6, at least when lifting and lowering, a lifting beam 20 is fixed under the transition structure 6. The first side of the lifting beam 20 rests on the movable bridge element 4. On the second side of the lifting beam 20, in addition to the positioning device 8, the edge beam 18 of the transition structure 6 is fixed, as well as the socket 21. The lifting beam 20, the positioning device 8, the edge beam 18 and the socket 21 form a functional unit that connects the transition structure 6 to the side of the stationary element bridge 3 when the bridge is closed. Accordingly, in this example, the movable beam 7, which is set to a predetermined position by the positioning device 8, means a block of at least a lifting beam 20, an edge beam 18, and a socket 21.

In the lowered state of the movable bridge element 4 between the socket 21 and the stationary element of the bridge 3 there remains an edge gap 22 (not shown in Fig. 2). The marginal gap 22 should be as small as possible, to prevent leakage of dirt and liquid and to provide a fairly uniform transition of the roadway. Ultimately, the positioning device 8 provides the smallest possible marginal gap 22. The positioning device 8 on the side of the movable bridge element 4 has a pin 9. The positioning device 8 on the side of the stationary bridge element 3 has a guide 10, which in this example is made in the form of a funnel.

Between the trunnion 9 and the guide 10 is a carrier 11, which in this case is attached to the trunnion 9. In the first example, the carrier 11 has sliders 12 made of plastic. When the movable element 4 of the bridge is lowered, the pin 9 enters the funnel-shaped guide 10 and, accordingly, is set to a predetermined position. In this way, between the socket 21 and the stationary element of the bridge 3, in the end, a minimum edge gap 22 is provided.

In addition, the overlapping device 1 has a shock-absorbing device 14. In this case, the shock-absorbing device 14 consists of two force transmitting elements 14a located on a straight line with the pin 9 and two shock absorbing elements 14b. On the one hand, this design allows you to lower and raise the movable element 4 of the bridge in the vertical direction, and on the other hand, the forces and moments of forces that are generated when the bridge is closed and can not be damaged, for example, edge beam 18 or axle 9. For example, forces and moments of force can be generated when vehicles cross the bridge or as a result of thermal expansion of the bridge elements.

The transition structure 6 provides a uniform transition of the carriageway.

To be able to absorb the forces arising from crossing the bridge by vehicles, the transition structure 6 has several lamellas 28 that are transverse to the direction of travel. Between the lamellas 28 of the transition structure 6 seals are installed (not shown in Fig. 2), which prevent leakage of moisture. A liquid leaking into the guide 10, when the bridge is open, draws down a drain pipe 23b. In addition, the drainpipe 23a under the edge gap 22 does not allow moisture seeping through the edge gap 22 to fall into the blocking device 1 from below.

In FIG. 3 shows a second embodiment of the overlapping device 1. It is mainly similar to the first embodiment and differs primarily in the positioning device used 8. If the sliders 12 are used in the first embodiment, the rollers 13 are used in this case. They are especially applicable in small bridges, having smaller and lighter transition structures 6. Small forces are required to position these smaller transition structures 6. In this case, the rollers 13 provide a smooth movement of the axle 9 into the guide 10. However, such rollers 13 are less acceptable at medium and high load pressures, since they are not able to transmit sufficiently large forces. Due to the interaction of the shape of the pins 9, including the roller 13, the guide 10, the force transmitting element 14a and the shock-absorbing element 14b, there is no contact between the guide 10 and the roller 13 in the lowered end position of the movable bridge element 4, but the upper end of the pin practically enters the force transmitting element . Accordingly, when the bridge is closed, the external end of the positioning device 8 is not affected by forces and moments of force that could cause undesirable deformation of the journal.

In FIG. 4 is a plan view of part of an overlapping device 1 according to a third embodiment of the invention. In this case, the stationary element of the bridge 3, the edge gap 22, the socket 21, the transition structure 6 in the form of a rotary transverse transition structure 106, as well as the movable element 4 of the bridge are shown from above. The pivoting transverse elements 16 under the lamellas 28, as well as the lifting beams 20, are illustrated by shading. The pivoting cross members 16 are slightly slanted with respect to the direction of travel and are pivotally connected to the lamellas 28. Due to this design, all lamellas 28 are evenly extended and retracted. Lifting beams 20 are movably mounted on the movable bridge element 4. They allow the pivoting transverse transition structure 106 to move in the provided range of degrees of freedom. The lifting beams 20 together with the socket 21 bear the weight of the pivoting transverse transition structure 106 when the bridge is raised. In this way, an appropriate guide is provided and the overload of the transverse elements 19 is prevented.

In FIG. 5 is a sectional view taken along line AA of the overlapping device 1 illustrated in FIG. 4. In this case, various components of the overlapping device are visible, which, on the one hand, provide for positioning when the movable bridge element is lowered, and on the other hand, absorb horizontal forces. The overlapping device 1 has a positioning device 8. The positioning device 8 is formed by a pin 9 and a guide 10 attached to the stationary element 3 of the bridge. As the supporting elements 11 are used sliders. Accordingly, the positioning device 8 can simultaneously act as a shock absorbing lateral force of the support 26. In the lowered state, it also absorbs the forces arising transversely to the direction of movement between the socket 21 and the stationary element 3 of the bridge.

Since in this example, the longitudinal forces arising could significantly exceed the transverse forces, in this case three separate shock absorbing longitudinal forces of the support 27 are provided, although not all of them are visible in a sectional view. In this case, the separation of the positioning device 8 and the shock absorbing longitudinal forces of the support 27 makes it possible to optimally select the dimensions of the respective components.

In addition, a separate longitudinal centering means 25 is provided. The functional separation of the lateral centering means and the longitudinal centering means ensures optimal adaptation to conditions (for example, to the size of the overlapping gap). For example, larger longitudinal displacements than transverse displacements can be deliberately set. In this case, lifting beams 20 are also used to take on the weight of the transition structure 6 and sockets 21 when the bridge is open / open.

List of items:

1. overlapping device

2. clearance in connection

3. stationary element of the bridge

4. movable bridge element

5. movable bridge

6. transition structure

7. movable beam

8. positioning device

9. trunnion

10. guide

11. bearing element

12. slider

13. movie

14. The shock absorbing device 14a. force transmitting element 14b. shock absorbing element

15. beam support

16. rotatable cross member

17. central beam transition structure

18. edge beam

19. transverse element

20. lifting beam

21. nest

22. marginal clearance

23a. downpipe

23b. downpipe in the edge gap

24. lateral positioning means

25. longitudinal positioning means

26. shock absorbing lateral support

27. shock absorbing longitudinal bearing support

28. slats

106. rotatable transverse transition structure

Claims (22)

1. The overlapping device (1) for closing the gap in the connection (2) between the stationary element (3) and the movable element (4) of the movable bridge (5), characterized in that the overlapping device (1) has a transition structure (6) at least with at least one movable beam (7) and at least one positioning device (8) for installing at least one movable beam (7) of the transition structure (6) in a predetermined position in the gap in the connection (2) between the stationary element (3) and the movable element (4) of the bridge after moving the movable element the one (4) of the bridge. 2. The overlapping device (1) according to claim 1, characterized in that the positioning device (8) has a pin (9). 3. Overlapping device (1) according to any one of the preceding paragraphs, characterized in that the positioning device (8) has at least one guide (10) of the journal (9), preferably made in the form of a funnel. 4. Overlapping device (1) according to any one of the preceding paragraphs, characterized in that the pin (9) and / or the guide (10) has at least one friction reducing bearing element (11), preferably a slider (12) made of sliding material, and / or roller (13). 5. Overlapping device (1) according to any one of the preceding paragraphs, characterized in that the positioning device (8) has at least one transverse centering means (24) and / or at least one longitudinal centering means (25). 6. Overlapping device (1) according to any one of the preceding paragraphs, characterized in that the positioning device (8) is designed in such a way that a predetermined, in particular, minimum edge gap (b) is formed between the stationary bridge element (3) and the transition structure (6) ( 22). 7. Overlapping device (1) according to any one of the preceding paragraphs, characterized in that the positioning device (8) has at least one shock-absorbing device (14). 8. Overlapping device (1) according to any one of the preceding paragraphs, characterized in that the shock-absorbing device (14) has at least one shock-absorbing lateral force bearing (26) and / or at least one longitudinal-shock-absorbing bearing (27). 9. Overlapping device (1) according to any one of the preceding paragraphs, characterized in that the shock-absorbing device (14) and the positioning device (8) are functionally combined in one device. 10. Overlapping device (1) according to any one of the preceding paragraphs, characterized in that the shock-absorbing device (14) and the positioning device (8) are functionally separated in various devices. 11. Overlapping device (1) according to any one of the preceding paragraphs, characterized in that it has at least one means of creating a certain distance between the journal and the guide in the state when the shock-absorbing device is in effect. 12. Overlapping device (1) according to any one of the preceding paragraphs, characterized in that the transition structure (6) is a rotary transverse transition structure (15). 13. Overlapping device (1) according to any one of the preceding paragraphs, characterized in that at least one movable beam (7) is a rotatable transverse element (16) of a rotatable transverse transition structure (15). 14. The overlapping device (1) according to any one of paragraphs. 1-11, characterized in that the transition structure (6) is the Central beam transition structure (17). 15. Overlapping device (1) according to any one of the preceding paragraphs, characterized in that at least one movable beam (7) is made in the form of an edge beam (18), a transverse element (19) and / or a central beam (17) of the transition structure (6). 16. Overlapping device (1) according to any one of the preceding paragraphs, characterized in that at least one movable beam (7) is made in the form of a lifting beam (20) of the transition structure (6). 17. Overlapping device (1) according to any one of the preceding paragraphs, characterized in that for at least one movable beam (7) on the movable element (4) of the bridge, a beam support (15) is provided, into which the corresponding movable beam (7) is directed . 18. Overlapping device (1) according to any one of the preceding paragraphs, characterized in that the overlapping device (1) is made waterproof. 19. Overlapping device (1) according to any one of the preceding paragraphs, characterized in that at least one downpipe (23) is located in the edge gap (22) and / or in the guide (10). 20. Overlapping device (1) according to any one of the preceding paragraphs, characterized in that the transition structure (6) is located on a stationary element (3) of the bridge. 21. Overlapping device (1) according to any one of the preceding paragraphs, characterized in that the transition structure (6) is located on the movable element (4) of the bridge. 22. A movable bridge having an overlapping device (1) according to any one of the preceding paragraphs.

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