Toothed plate, road surface expansion joint device with toothed plate and method for fastening toothed plate to beam

Abstract

The present application relates to a toothed plate (16) for reducing noise in a road surface telescopic seaming device (1). The toothed plate (16) is configured such that it can be attached in a cantilevered manner at least in some regions to a beam of a road surface telescoping seaming device. The toothed plate (16) has a lower side (18) and an upper side (17) through which a vehicle tire can pass, and the shape of the toothed plate (16) has, in plan view, at least one first toothed tip (19) having a first end face (25) which, in side view, is recessed at least substantially from the upper side (17) towards the lower side (18). In addition, the invention relates to a telescopic road joint device (1) with the toothed plate (16) and a method for fastening the toothed plate (16).

Description

[0001] The present invention relates to a toothed plate for noise reduction in a road expansion joint device, a road expansion joint device having at least one such toothed plate, and a method for fastening such a toothed plate to a beam of the road expansion joint device.

[0002] Road expansion joint devices are used to bridge expansion joints, such as those in road bridges. Expansion joints are typically joints between two structural components of a structure that can expand or contract again. To ensure vehicles can safely pass through such expansion joints in the road surface area, road expansion joint devices are provided within the expansion joint. Depending on the size of the expansion joint being bridged, these devices typically have a number of beams arranged in the area of ​​the expansion joint and extending parallel to each other in the longitudinal direction of the joint. These beams may be permanently installed at the edges of the joint; they are then referred to as edge beams. For larger expansion joints, additional beams are placed between the two edge beams. These additional beams are called central beams or slabs, and they themselves are movably mounted in the expansion joint on the crossbeams bridging the expansion joint. To ensure that the distance between the central beams remains uniformly distributed regardless of the large or small opening of the expansion joint, such road expansion joint devices typically have mechanical control mechanisms. These mechanical control devices control the distance between the central beams, and thus ensure that the central beams are always positioned at the same distance from each other in the expansion joint, and thus allow vehicles to pass safely.

[0003] When a vehicle drives over a road expansion joint, the impact noise generated by the vehicle's tires striking the edges of beams arranged in the expansion joint contributes to noise emissions. These beam edges are more or less transverse to the direction of travel. To reduce impact noise, it is known to arrange toothed plates with serrated tips on the edge beams and / or the central beam. Thus, the corresponding vehicle tires continuously roll along the inclined edges onto the toothed plates and no longer impact the edges of the beams extending transversely to the direction of travel. If several beams are used in the expansion joint, several toothed plates are typically also arranged on the beams in such a way that the toothed plates engage in the space between adjacent or opposite toothed plates when two adjacent beams are pushed together.

[0004] For example, DE 101 08 908 A1 discloses a universal toothed plate for noise reduction in road expansion joint devices, wherein the universal toothed plate is configured such that it can be cantilevered to the beam of the road expansion joint device in at least some areas. Furthermore, the toothed plate has a lower side and an upper side configured to be passed over by vehicle tires, and the shape of the toothed plate in a plan view has at least one first toothed tip.

[0005] However, a known drawback of the design is that the toothed plates must be pushed completely together to close the gaps between adjacent plates, resulting in a relatively large number of plates required. Another disadvantage of conventional toothed plates is that they are aligned and positioned using positioning templates and welding to the beam. This leads to relatively high production and assembly costs for pavement expansion joint devices that use toothed plates to reduce noise.

[0006] Therefore, the object of the present invention is to provide an improved toothed plate and an improved road expansion joint device, which on the one hand further reduces noise and can be manufactured more easily, and on the other hand can be arranged in a way that reduces the number of toothed plates required to bridge the expansion joint.

[0007] According to the invention, the solution to this problem is achieved by the toothed plate according to claim 1, the road expansion joint device according to claim 20, and the method for fastening the toothed plate according to claim 30. Other advantageous embodiments of the invention are obtained from dependent claims 2 to 19 and dependent claims 21 to 29. Therefore, the toothed plate according to the invention differs from a general toothed plate in that the first tooth tip has a first face side that is at least substantially recessed from the upper side towards the lower side in a side view. This means using a recessed rather than a protruding face side.

[0008] Currently, the recessed end face of the toothed plate is understood as an end face extending inward at a certain angle on the lower side of the toothed plate. In the side view, the tip of the toothed plate is therefore inclined, making its upper side longer than its lower side.

[0009] The toothed plates, designed in a manner entirely different from previous designs, offer particular advantages when mounted opposite each other on a beam beneath the road expansion joint device. The combination of toothed plates with conventionally constructed tips—where the end faces protrude—and toothed plates according to the invention with toothed tips—where the end faces are configured to be concave from top to bottom—offers significant advantages. This is because the toothed tips of the opposing toothed plates can push against each other, at least in some areas. Therefore, the toothed plates constructed according to the invention increase the applicability of the road expansion joint device. This results in a greater degree of closure than before.

[0010] Preferably, the first end face of the toothed plate has at least one region with a straight orientation in a side view, said at least one region being angled to the upper side at an angle of less than or equal to 45°, preferably less than or equal to 40°. The straight orientation ensures better overlap of any tooth tips that may abut against each other and deeper interlocking of the relatively mounted toothed plates. It also simplifies manufacturing.

[0011] Preferably, the toothed plate has at least a second toothed tip in the plan view. In particular, it is advantageous if the toothed plate has several tips arranged adjacent to and parallel to each other when it is to be arranged on the edge beam.

[0012] However, the following implementation is also conceivable: in this implementation, the second tooth tip is arranged opposite to the first tooth tip in the plan view, so that the tooth plate has a rhomboid shape in the plan view.

[0013] The rhombus shape is currently understood to refer to a shape obtained from a rhombus with four sides of equal length. Therefore, the shape does not necessarily have to be a rhombus with sides of exactly the same length or straight edges. Instead, the two ends can have different shapes or dimensions, such as different lengths. The asymmetrical shape of the toothed plates is particularly advantageous. Therefore, correspondingly shaped and opposing toothed plates, when arranged laterally offset on adjacent beams, can easily overlap or interlock with each other, at least in some areas. This allows the toothed plates to interlock to a much greater extent than before when adjacent beams are pushed together.

[0014] Furthermore, the second tooth tip has a second end face that, in a side view, protrudes at least substantially from the upper side toward the lower side. The protruding end face of the tooth plate is currently understood to be a shorter end face on the upper side of the tooth plate than on the lower side. Therefore, the tooth tip is longer at the bottom than at its upper side.

[0015] Furthermore, the second end face has at least one region with a straight orientation in the side view, said at least one region being angled to the lower side at an angle of 45° or greater, preferably 50° or greater. Like the first end face, the protruding portion of the second end face is also partially straight. This straight orientation provides manufacturing advantages and better overlap of any abutting tips, and thus better meshing of the opposing toothed plates.

[0016] It is useful if the second end face extends parallel to the first end face in at least some areas of the side view. This ensures that the protruding and recessed end faces of the corresponding toothed plates fit together well. The manufacturing cost is relatively low if several such toothed plates with this shape are combined in a pavement expansion joint device.

[0017] Preferably, at least one toothed tip has at least one longitudinal side in the front view, said at least one longitudinal side extending from the upper side to the lower side of the toothed plate in a recessed manner in at least some areas. Therefore, the longitudinal sides of the toothed tip are also angled, allowing adjacent toothed plates to laterally overlap in some areas.

[0018] Furthermore, the longitudinal sides, which are recessed in some areas in the front view, also include portions that protrude from the upper side to the lower side of the toothed plate in at least some areas. This, in particular, combined with the partially recessed design, creates a complex spatial shape for the longitudinal sides. This facilitates lateral overlap of adjacent toothed plates, especially when these plates have tooth tips shaped in different ways—tooth tips with end faces shaped in different ways.

[0019] In another embodiment, the toothed plate has an elongated shape in plan view and has a plurality of toothed tips arranged parallel to each other. In this way, a toothed plate with at least one wavy or serrated edge can be produced. This design requires a relatively large amount of material. However, it has certain advantages when the toothed plate is mounted on a corresponding beam compared to installing a large number of spaced-apart small toothed plates.

[0020] In a useful manner, several toothed tips arranged parallel to each other are constructed as either first toothed tips or second toothed tips. This makes it easy to mount a toothed plate with first-type tips opposite to a toothed plate with second-type tips. Combination is also conceivable. In other words, a relatively long toothed plate has several first tooth tips with concave end faces on one long side and several second tooth tips with protruding end faces on the other opposite long side.

[0021] Preferably, at least one tooth tip is rounded at the front in the plan view. This further reduces the risk of any damage to the vehicle tires when driving on the toothed plate.

[0022] Furthermore, the toothed plate, which has an elongated shape and several toothed tips arranged parallel to each other, has a rounded portion between two adjacent toothed tips in the top view, and the rounded portion protrudes downwards in the side view. The rounded portion ensures that the tips with concave end faces of the opposing toothed plates can be partially pushed onto these rounded portions. This allows the opposing toothed plates to interlock, meaning that expansion joint devices can completely cover these areas. The protruding design of the rounded portion allows the toothed tips of the opposing toothed plates to overlap in some areas. The greater the protruding length of the rounded portion, the more the tips can overlap, and the more uniformly the upper sides are pushed together as they are driven. This further reduces noise when traveling on the toothed plate.

[0023] Preferably, the toothed plate has at least one opening extending from its upper side to its lower side, said opening for fastening the toothed plate. In other words, the opening is configured as a through opening. This makes it easier to attach the toothed plate to the beam below.

[0024] Additionally, the toothed plate has at least one fastening base on its lower side, preferably annular in shape. The fastening base also facilitates fastening the toothed plate to the beam below.

[0025] Advantageously, at least one fastening base is arranged on the lower side of the toothed plate—which is rhomboid in plan view and has a first tip and a second tip—such that the fastening base is centered at the intersection of the longitudinal axis of the toothed plate extending centrally through the two tips and the transverse axis of the toothed plate extending centrally through the two lateral corners. This central arrangement of the fastening base ensures uniform force transmission from the toothed plate to the beam.

[0026] Preferably, the toothed plate has at least one protruding, preferably tapered, centering pin on its lower side for positioning the toothed plate on the beam with the corresponding perforation. This makes it easier to install the toothed plate onto the beam. The centering pin serves as an assembly aid and has the advantage of making it easier to insert the centering pin into the corresponding hole on the beam. The use of the tapered pin particularly allows for certain tolerances in the hole, which further simplifies production.

[0027] Furthermore, the toothed plate is rhomboid in shape, having a first tooth tip and a second tooth tip, and two centering pins on its underside. These two centering pins are arranged spaced apart from each other on a centering axis that extends parallel to a transverse axis extending through the two lateral corners of the rhomboid-shaped toothed plate, wherein the centering axis extends on one side of the first tooth tip. This allows the relatively complex-shaped toothed plate to be positioned correctly on the beam in a very simple manner. This eliminates the need for positioning templates and tack welds for positioning the toothed plate. This makes the assembly and production of the corresponding pavement expansion joint device even more cost-effective and less complex.

[0028] Preferably, the toothed plate has a first toothed tip and a second toothed tip, and has a marking on its upper side that allows it to be distinguished from the second toothed tip. This makes assembly even easier. For example, the marking could be a company logo.

[0029] Preferably, the toothed plate is at least partially made of forged steel. This advantageously increases the strength and service life of the toothed plate.

[0030] The road expansion joint device according to the invention has at least one beam on which at least one toothed plate is suspended, as described above. The advantages of the toothed plate described above are achieved here by the corresponding road expansion joint device. In particular, there are significant advantages in the case of a road expansion joint device having several toothed plates.

[0031] In particular, compared to conventional toothed plates, the lateral clearance between two adjacent toothed plates can be increased, for example, from 125 mm to 150 mm, when using diamond-shaped toothed plates with first-type tips (i.e., those with concave end faces) and second-type tips (i.e., those with convex end faces). This means that the total number of toothed plates used in pavement expansion joint devices can be reduced. Another advantage of using asymmetrical diamond-shaped toothed plates is that they are easier to clean and easier to insert the sealing profile between two adjacent beams of the pavement expansion joint device. This type of pavement expansion joint device advantageously allows for greater lateral movement of the beams and better compensates for manufacturing tolerances, which simplifies production and assembly and makes them more cost-effective.

[0032] Furthermore, the road expansion joint device has at least two diamond-shaped toothed plates, which are spaced apart from each other and mounted to the first beam. The plates are arranged on the first beam such that their first tooth tips point in the same direction in plan view. Usefully, the road expansion joint device then also has at least two additional diamond-shaped toothed plates, which are spaced apart from each other and mounted to the second beam. These plates are arranged on the second beam such that, when viewed from above, their first tooth tips point in the same direction as the first tooth tips of the diamond-shaped toothed plates on the first beam. This allows adjacent toothed plates to partially overlap in the closed state. Additionally, the at least two diamond-shaped toothed plates on the first beam should be arranged offset relative to the at least two diamond-shaped toothed plates on the second beam. The spacing should be advantageously chosen such that the toothed plates of the second beam can engage in the space between the toothed plates arranged on the first beam.

[0033] Furthermore, at least two diamond-shaped toothed plates are fastened to the corresponding underlying beams such that the transverse axis of the toothed plates extends parallel to and preferably aligns with the longitudinal axis of the beams. This achieves optimal possible interlocking of the toothed plates of the second beam within the space between the toothed plates arranged on the first beam.

[0034] Usefully, the diamond-shaped toothed plates are fastened to the beam, which is constructed as a movable central beam for road expansion joint devices. This allows the toothed plates of two adjacent beams to interlock.

[0035] Preferably, the road expansion joint device has at least two toothed plates, which are arranged opposite to each other on two beams of the road expansion joint device and fastened to the respective lower beams, such that the transverse axis of the toothed plate extends at an inclined angle relative to the longitudinal axis of the beam, and preferably extends parallel to each other. The angle between the transverse axis of the toothed plate and the longitudinal axis of the beam can be, for example, between 5° and 30°, preferably between 5° and 20°. The inclined arrangement of the toothed plates allows for a larger gap width between two adjacent beams.

[0036] Preferably, the toothed plates are fastened to the two beams such that the upper sides of the toothed plates are flush with each other when the road expansion joint device is pushed together, and their first tooth tips at least partially cover the second tooth tips arranged opposite to them in the plan view. This increases the opening and closing degree of the expansion joint device. Furthermore, when pushed together, a relatively flat road surface is formed. This further reduces noise when traveling on the toothed plates compared to expansion joint devices with conventional toothed plates.

[0037] Usefully, at least one elongated toothed plate having a plurality of first toothed tips or a plurality of second toothed tips is mounted on a non-movable edge beam. In this way, the aforementioned advantages can also be transferred to the edge region of the expansion joint.

[0038] Preferably, the toothed plates of the two opposing beams are fastened to these beams such that, in the maximum open state of the expansion joint device, there is no continuous gap parallel to the longitudinal axis of the beams between the toothed tips of the toothed plates. This ensures the safe use of the two-wheeled vehicle. A typical two-wheeled vehicle wheel cannot slip too deeply between the toothed plates or become wedged.

[0039] Preferably, in the maximum open state of the road expansion joint device, the maximum lateral distance between the two toothed plates mounted on the first beam and the two toothed plates mounted on the second beam arranged adjacent to the first beam satisfies the condition that a ball with a diameter greater than 100 mm cannot be pushed through the space between the toothed plates and the beam. Specifically, this satisfies the requirements for the safe use of the road expansion joint device. Furthermore, the road expansion joint device is then constructed such that cuboids with side lengths of 200 mm × 100 mm and 350 mm × 70 mm cannot be pushed through the space between adjacent toothed plates at any angle relative to the direction of travel, and cuboids with side lengths of 220 mm × 65 mm, 350 mm × 45 mm, and 220 mm × 20 mm cannot be pushed through the space between adjacent toothed plates at an angle range of + / -20° relative to the direction of travel.

[0040] The method according to the invention for fastening the aforementioned toothed plate to a beam of a road expansion joint device comprises a first step in which at least one centering pin, preferably at least one of two centering pins, and preferably two recesses are formed in the upper side of the beam for receiving the toothed plate. In a second step, the toothed plate is positioned in the recesses by the centering pins. In a third step, the toothed plate is welded to attach it to the beam.

[0041] The aforementioned advantages of assembling the toothed plate constructed according to the invention and the road expansion joint device according to the invention are thus realized during their manufacture. In particular, this makes the assembly of the toothed plate on the beam very cost-effective and simple. If several toothed plates and several beams are installed in this way, this beneficial effect will be increased accordingly.

[0042] The invention will now be explained in more detail with reference to embodiments. The accompanying drawings are shown schematically as follows:

[0043] Figure 1 This is a side view of a first embodiment of the road expansion joint device according to the present invention;

[0044] Figure 2 This is a three-dimensional view of the toothed plate according to the present invention;

[0045] Figure 3 yes Figure 2 A top view of the upper part of the toothed plate shown;

[0046] Figure 4 It is along Figure 2 The cross-sectional view of the toothed plate taken along its longitudinal axis is shown in the figure.

[0047] Figure 5 It is along Figure 2 The cross-sectional view of the toothed plate taken along its transverse axis is shown in the figure.

[0048] Figure 6 yes Figure 2 A top view of the lower part of the toothed plate shown;

[0049] Figure 7 This is a top view of a second embodiment of the road expansion joint device according to the present invention, wherein, Figure 2 The toothed plates shown are in a pushed-together state;

[0050] Figure 8 yes Figure 7 A cross-sectional view of the expansion joint device shown;

[0051] Figure 9 It is in the fully open state. Figure 7 The plan view of the expansion joint device shown; and

[0052] Figure 10 yes Figure 9 The cross-sectional view of the expansion joint device shown.

[0053] The same components in different embodiments are indicated by the same reference numerals.

[0054] Figure 1A side view of a first embodiment of a road expansion joint device 1 according to the present invention is shown, which is used to bridge an expansion joint between a first structural component 2 and a second structural component 3. For example, these structural components may be structural components of a road bridge, such as a bridge abutment and / or bridging platform that supports the road surface.

[0055] A road surface 4 is laid on structural component 2, and a seal 5 is provided between the road surface 4 and structural component 2. The seal 5 prevents moisture from seeping into structural component 2 from above. The movable structural component 3 also has a seal 5 and the road surface 4 above it. The road expansion joint device 1 is sealed against the road surface 4 by means of a grouting joint 6 and is attached to structural component 2 or 3 by a number of anchoring devices 15.

[0056] In the first embodiment shown here, the road expansion joint device 1 has two edge beams 7 that are immovably attached to corresponding structural members 2 or 3, and five movable central beams 10. In the side view, each edge beam 7 has a horizontal portion 8 and a vertical portion 9. A grouting joint member 6 is disposed between the vertical portion 9 and the road surface 4. A sealant 5 extends on the horizontal portion 8 such that the road surface 4 is also sealed against the edge beams 7.

[0057] As already mentioned, there are five central beams 10 in this embodiment. However, the number of central beams 10 may be more or less than five. This depends, among other things, on the size of the expansion joint to be bridged.

[0058] The central beam 10 is arranged parallel to each other in the expansion joint and between the two edge beams 7. The cross-sectional shape of the central beam 10 is in the form of a double T-beam, but other shapes are also conceivable in principle. The road expansion joint device 1 also has at least two crossbeams 11, on which the central beam 10 is mounted, so that the central beam 10 can move at least in the lateral direction 10.

[0059] Claw-shaped retaining parts 12 are provided on the central beam 10 and the edge beams 7. Each claw-shaped retaining part 12 points to the adjacent central beam 10 or the adjacent edge beam 7. Each of these beams is equipped with an elastic sealing element 13 to prevent dust and moisture from entering.

[0060] The distance between two adjacent central beams 10, or between an edge beam and an adjacent central beam 10, is set by a control device not visible here, and this distance varies according to the movement or expansion of structural components 2 or 3. This distance is also referred to here as the gap width L1. When pushed together, the gap width L1 is zero. Figure 9 and Figure 10 This state is shown in the second embodiment.

[0061] exist Figure 7 and Figure 8 In the diagram, the expansion joint reaches its maximum extension. Here, the road expansion joint device 1 is in its maximum open state, and the central beam 10 is pushed so far that the gap width L1 reaches its maximum value in each case.

[0062] To reduce noise, the road expansion joint device 1 has a large number of toothed plates 16, which are cantilevered and attached to the central beam 10 and the edge beam 7. Each toothed plate 16 has an upper side 17 and a lower side 18. The upper side 17 is configured to be able to be driven over by vehicle tires. The toothed plates 16 are mounted on the central beam 10 and the edge beam 7 such that the upper side 17 of the toothed plate 16 forms a surface that is as flat as possible.

[0063] Reference Figures 2 to 6 The embodiments of the toothed plate 16 according to the present invention will now be described in more detail below.

[0064] Figure 2 A three-dimensional view of the toothed plate 16 is shown, and Figure 3 A top view of the upper side portion of the toothed plate 16 is shown. The toothed plate 16 has a first tooth tip 19 and a second tooth tip 20. The second tooth tip 20 is positioned opposite to the first tooth tip 19. A longitudinal axis LA extends through the center of the first tooth tip 19 and the second tooth tip 20. The toothed plate 16 has a first lateral angle 21 and a second lateral angle 22. The first lateral angle 21 is positioned opposite to the second lateral angle 22. A transverse axis QA of the toothed plate 16 extends through the center of the first lateral angle 21 and the second lateral angle 22. The longitudinal axis LA and the transverse axis QA extend at right angles to each other. The first tooth tip 19 and the second tooth tip 20, as well as the first lateral angle 21 and the second lateral angle 22, are arranged such that the toothed plate 16 has a rhomboid shape when viewed from above.

[0065] If possible Figure 3 As can be seen, the first tooth tip 19 and the second tooth tip 20 are rounded at their front portions. The first lateral corner 21 and the second lateral corner 22 are also rounded in the plan view. The rounded portion of the first tooth tip 19 corresponds to the rounded portion of the second tooth tip 20. The rounded portion of the first lateral corner 21 corresponds to the rounded portion of the second lateral corner 22. The radius of the rounded portions of the first tooth tip 19 and the second tooth tip 20 is larger than the radius of the rounded portions of the first lateral corner 21 and the second lateral corner 22.

[0066] Figure 4A cross-section taken along the longitudinal axis LA of the toothed plate 16 is shown. The first tooth tip 19 now has a first end face 25, which is formed in the side view to be recessed at least generally from the upper side 17 toward the lower side 18. Furthermore, in the side view, the first end face 25 has at least a first portion 26 that runs straight. The straight first portion 26 forms a first angle W1 with the upper side 17 of the toothed plate 16. The first angle W1 is less than or equal to 45°, preferably less than or equal to 40°.

[0067] The second tooth tip 20 has a second end face 27, which, in a side view along the longitudinal axis LA, at least substantially protrudes from the upper side 17 toward the lower side 18 and also has a straight-oriented portion 28. The straight-oriented portion 28 forms a second angle W2 with the lower side 18 of the tooth plate 16. The second angle W2 is greater than or equal to 45°, preferably greater than or equal to 50°. The first angle W1 may also have the same value as the second angle W2. The second end face 27 extends parallel to the first end face 25 in at least some areas; in particular, the straight-oriented first portion 26 extends parallel to the straight-oriented second portion 28.

[0068] The first longitudinal side 29 and the second longitudinal side 30 each have a protruding portion 33. The toothed plate 16 thus becomes thicker in this region from the upper side 17 toward the lower side 18. The third longitudinal side 31 and the fourth longitudinal side 32 each have another protruding portion 34, which protrudes from the upper side 17 toward the lower side 18 of the toothed plate 16. Although in each case the other protruding portion 34 is formed over the entire length of the third longitudinal side 31 and the fourth longitudinal side 32, in each case the protruding portion 33 is formed only over a portion of the length of the first longitudinal side 29 and the second longitudinal side 30.

[0069] Figure 5 The cross-section shown, taken along the transverse axis QA passing through the toothed plate 16, illustrates the lateral configuration of the toothed plate 16 in the regions of the first lateral corner 21 and the second lateral corner 22. Recessed portions 35 and 36 intersect at the first lateral corner 21 and the second lateral corner 22, respectively. Protruding portions 33 and 34 also intersect at the first lateral corner 21 and the second lateral corner 22. The recesses of the recessed portions 35 and 36 are deeper toward the center of the toothed plate 16 than the protrusions of the protruding portions 33 and 34.

[0070] from Figure 6As can be seen from the top view of the lower side portion of the toothed plate 16 shown, the first longitudinal side portion 29 and the second longitudinal side portion 30 each have a recessed portion 35 that extends recessedly from the upper side portion 17 to the lower side portion 18 of the toothed plate 16. The third longitudinal side portion 31 and the fourth longitudinal side portion 32 each have another recessed portion 36 that extends recessedly from the upper side portion 17 to the lower side portion 18 of the toothed plate 16. Although the other recessed portion 36 is formed over the entire length of the first longitudinal side portion 19 and the second longitudinal side portion 20, the recessed portion 34 is formed only over a portion of the length of the third longitudinal side portion 31 and the fourth longitudinal side portion 32. The protruding portion 33 disappears toward the first tooth tip 19 and merges into the recessed portion 35. The recessed portion 36 disappears toward the second tooth tip 20 and merges into the protruding portion 34.

[0071] As can be seen now Figure 3 As seen in the plan view of the upper side of the toothed plate 16, the toothed plate 16 has an opening 37 for fastening the toothed plate 16 to the beam, the opening 37 extending from the upper side 17 to the lower side 18 of the toothed plate 16. The opening 37 has an inner surface 38 and a central axis M1 ( Figure 2 As shown in the diagram, the central axis M1 extends through the intersection of the transverse axis QA and the longitudinal axis LA. The central axis M1 extends perpendicularly to the upper side 17 of the toothed plate 16.

[0072] If possible Figure 6 As seen in the image, the toothed plate 16 has a fastening base 39 on its lower side 18. The fastening base 39 is currently constructed as an annular protrusion. An opening 37 also extends through the fastening base 39, such that the fastening base 39 is centered at the intersection of the centrally extending longitudinal axis LA and the centrally extending transverse axis QA of the toothed plate 16. The toothed plate 16 can therefore be mounted to the central beam 10 or the edge beam 7 by welding to the inner surface 38 of the opening 37.

[0073] The fastening base 39 has two centering pins 41 on its bottom side 40. The centering pins 41 are arranged such that they protrude from the fastening base 39 parallel to the central axis M1. The centering pins 41 are arranged spaced apart from each other on the centering axis M2. The centering axis M2 extends parallel to the transverse axis QA. The centering axis M2 may extend on one side of the first toothed tip 19 or the second toothed tip 20. The centering pins 41 are equidistant from the longitudinal axis LA of the toothed plate 16.

[0074] A centering pin 41 is used to facilitate the alignment of the toothed plate 16 on either the central beam 10 or the edge beam 7. For this purpose, corresponding openings (not shown) are provided on the central beam 10 and the edge beam 7 to receive the centering pin 41. This allows the toothed plate 16 to be positioned on the central beam 10 and the edge beam 7 so that the toothed plate 16 can be subsequently fastened to the central beam 10 or the edge beam 7 by welding. The centering pin 41 is preferably tapered to simplify the insertion of the centering pin 41 into the openings in the central beam 10 and the edge beam 7.

[0075] The centering pin 41 facilitates the alignment of the toothed plate 16 on either the central beam 10 or the edge beam 7. For this purpose, corresponding openings (not shown) are provided on the central beam 10 and the edge beam 7 to receive the centering pin 41. This allows the toothed plate 16 to be positioned on the central beam 10 and the edge beam 7 so that it can be subsequently fastened to the central beam 10 or the edge beam 7 by welding. The centering pin 41 is preferably tapered in shape to simplify the insertion of the centering pin 41 into the openings in the central beam 10 and the edge beam 7.

[0076] Reference Figures 7 to 10 The various states of the road expansion joint device 1 according to the present invention will be explained in more detail below.

[0077] Figure 7 A top view of a second embodiment of the road expansion joint device 1 according to the present invention is shown. Figure 1 Compared to the first embodiment shown, this embodiment has only three central beams 10. Except for the edge regions, these central beams are completely covered by the individual toothed plates 16 mounted on them in the pushed-together state shown here.

[0078] An edge toothed plate 16a is arranged on each edge beam 7 of the road expansion joint device 1. Unlike the toothed plate 16, the edge toothed plate 16a extends over the entire width of the road expansion joint device 1.

[0079] The diamond-shaped toothed plates 16 are spaced apart from each other by a distance L2 in the longitudinal direction of the central beam 10. In the present case, the distance L2 is the distance between the central axes M1 of two adjacent toothed plates 16 on the edge beam 7 or the central beam 10. The toothed plates 16 are arranged such that the toothed plates 16 are offset relative to the toothed plates 16 arranged on the adjacent edge beam 7 or the central beam 10 by half the length of the distance L2.

[0080] Furthermore, the toothed plates 16 are arranged such that their first tooth tips 19 point in the same direction when viewed from above. Advantageously, the first tooth tips 19 point in the direction of travel, thereby reducing noise when the vehicle tires are rolling. In addition, the toothed plates 16 are arranged such that the transverse axis QA of the toothed plates 16 extends parallel to and preferably aligned with the longitudinal axis of the edge beam 7 and the central beam 10.

[0081] With the road expansion joint device 1 pushed together, the upper sides 17 of the toothed plates 16 are aligned flush with each other, forming a plane. The first toothed tip 19 then at least partially covers the second toothed tip 20, which is arranged opposite to the longitudinal axis LA of the toothed plates 16, as shown. Figure 8 As shown in the diagram, the first toothed tip 19 also partially covers the first lateral corner 21 and the second lateral corner 22 of the toothed plate 16 arranged on the adjacent edge beam 7 or central beam 10, the toothed plate 16 being arranged offset by half the length of distance L2. The first toothed tip 19 also partially covers the protruding portion 34 of the toothed plate 16 arranged on the adjacent edge beam 7 or central beam 10, the toothed plate 16 being arranged offset by half the length of distance L2.

[0082] If possible Figure 8 As can be seen particularly clearly in the cross-sectional view, in the retracted state, the second tooth tip 20 partially protrudes below the first tooth tip 19 of the oppositely arranged tooth plate 16.

[0083] exist Figure 7 As can be seen, the second toothed tip 20 also partially protrudes below the first lateral corner 21 and the second lateral corner 22 of the toothed plate 16 arranged on the adjacent edge beam 7 or central beam 10. These toothed plates 16 are offset by half the length of L2. The second toothed tip 20 also partially protrudes below the recessed portion 36 of the toothed plate 16 arranged on the adjacent edge beam 7 or central beam 10, which is offset by half the length of L2.

[0084] Figure 9 A top view of a second embodiment of the road expansion joint device 1 in its fully open state is shown. Here, the toothed plate 16 is attached to two opposing edge beams 7 or central beams 10 such that, in the fully open state, there is no continuous gap between the first toothed tip 19 and the second toothed tip 20 of the toothed plate 16 parallel to the longitudinal axis of the edge beams 7 or central beams 10.

[0085] Figure 10 A cross-section through the road expansion joint device 1 in its fully open state is shown. Here, one can see how the first toothed tip 19 overlaps with the second toothed tips 20 of the toothed plates 16 arranged on the adjacent edge beam 7 or central beam 10 by half the length of distance L2. This prevents the formation of a continuous gap between the first toothed tip 19 and the second toothed tip 20 of the toothed plate 16, perpendicular to the upper side 17 of the toothed plate 16 and parallel to the longitudinal axis of the edge beam 7 or central beam 10. List of reference numerals 1. Road surface expansion joint device 2 First structural component 3 Second structural components 4. Road surface 5. Seals 6 Grouting joint components 7 Edge beams 8. Horizontal section 9. Vertical section 10 Central Beam 11. Crossbeam 12. Maintenance section 13 Sealing elements 14. Seam gap 15 Anchoring devices 16 Toothed Plate 16a Edge toothed plate 17. Upper side 18 Lower side 19 First tooth tip 20 Second tooth tip 21 First lateral corner 22 Second lateral corner 25 First end face 26 The first part, running in a straight line 27 Second end face 28. The second part, which runs in a straight line. 29 First longitudinal side 30 Second longitudinal side 31 Third longitudinal side 32 Fourth longitudinal side 33 Highlighted parts 34. Highlighted parts 35. Recessed portion 36. Recessed portion 37 Opening 38 Inner surface 39. Secure the base 40 Bottom side 41. Stabilizing Selling L1 Gap Width L2 distance LA longitudinal axis M1 central axis M2 centering axis QA Horizontal Axis W1 First Angle W2 Second Angle

Claims

1. A toothed plate (16, 16a) for noise reduction in a road expansion joint device (1), the toothed plate (16, 16a) being designed such that it can be cantilevered to a beam (7, 10) of the road expansion joint device (1) in at least some areas, the toothed plate (16, 16a) having a lower side (18) and an upper side (17) designed to be driven over by vehicle tires, and the shape of the toothed plate (16, 16a) having at least one first toothed tip (19) in a plan view. Its features are, The first toothed tip (19) has a first end face (25) that is recessed at least approximately from the upper side (17) toward the lower side (18) in a side view.

2. The toothed plate (16, 16a) according to claim 1. Its features are, The first end face (25) has at least one portion (26) in the side view that is straight, the at least one portion (26) being at an angle (W1) to the upper side (17) of less than or equal to 45°, preferably less than or equal to 40°.

3. The toothed plate (16, 16a) according to any one of the preceding claims. Its features are, The toothed plate (16, 16a) has at least one second toothed tip (20) in the plan view.

4. The toothed plate (16, 16a) according to claim 3. Its features are, The second toothed tip (20) is arranged opposite to the first toothed tip (19) in the plan view, such that the toothed plates (16, 16a) have a rhomboid shape in the plan view.

5. The toothed plate (16, 16a) according to claim 4. Its features are, The second toothed tip (20) has a second end face (27) that protrudes at least generally from the upper side (17) toward the lower side (18) in the side view.

6. The toothed plate (16, 16a) according to claim 5. Its features are, The second end face (27) has at least one portion (28) in the side view that is straight, and the at least one portion (28) of the second end face is at an angle (W2) to the lower side (18) at an angle greater than or equal to 45°, preferably greater than or equal to 50°.

7. The toothed plate (16, 16a) according to claim 6. Its features are, The second end face (27) is parallel to the first end face (25) in at least some areas of the side view.

8. The toothed plate (16, 16a) according to any one of the preceding claims. Its features are, At least one toothed tip (19, 20) has at least one longitudinal side (20, 30, 31, 32) in the front view, the longitudinal side (20, 30, 31, 32) extending in a recessed manner from the upper side (17) of the toothed plate (16, 16a) toward the lower side (18) in at least some areas.

9. The toothed plate (16, 16a) according to claim 8. Its features are, The longitudinal side (20, 30), which is recessed in some areas in the front view, also has a portion (33) that extends in a protruding manner from the upper side (17) of the toothed plate (16, 16a) toward the lower side (18) in at least some areas.

10. The toothed plate (16, 16a) according to any one of the preceding claims. Its features are, In the plan view, the toothed plate (16, 16a) has an elongated shape and has a plurality of toothed tips (19, 20) arranged parallel to each other.

11. The toothed plate (16, 16a) according to claim 10. Its features are, The plurality of toothed tips arranged in parallel to each other are configured as a first toothed tip (19) or a second toothed tip (20).

12. The toothed plate (16, 16a) according to any one of the preceding claims. Its features are, At least one toothed tip (19, 20) is rounded at the front in the plan view.

13. The toothed plate (16, 16a) according to claim 10. Its features are, In the plan view, a rounded portion is provided between two adjacent toothed tips (19, 20), the rounded portion being configured to protrude in the side view.

14. The toothed plate (16, 16a) according to any one of the preceding claims. Its features are, The toothed plate (16, 16a) has at least one opening (37) extending from the upper side (17) of the toothed plate to the lower side (18) of the toothed plate, the at least one opening (37) being used to fasten the toothed plate (16, 16a).

15. The toothed plate (16, 16a) according to any one of the preceding claims. Its features are, The toothed plate (16, 16a) has at least one fastening base (39) on the lower side (18) of the toothed plate, and the fastening base (39) preferably has an annular shape.

16. The toothed plate (16, 16a) according to claim 15. Its features are, At least one fastening base (39) is thus provided on the lower side (18) of the toothed plate (16, 16a), which is rhomboid in shape in the plan view and has a first tip (19) and a second tip (20). The fastening base (39) is centrally located relative to the intersection of the longitudinal axis (LA) of the toothed plate (16, 16a) extending centrally through the two tips and the transverse axis (QA) of the toothed plate (16, 16a) extending centrally through the two lateral corners (21, 22) of the toothed plate (16, 16a).

17. The toothed plate (16, 16a) according to any one of the preceding claims. Its features are, The toothed plates (16, 16a) have at least one protruding, preferably tapered, centering pin (41) on the lower side (18) of the toothed plates, the centering pin (41) being used to position the toothed plates (16, 16a) on the beams (7, 10) with corresponding perforations.

18. The toothed plate (16, 16a) according to claim 17. Its features are, The toothed plates (16, 16a) have a rhomboid shape with a first toothed tip (19) and a second toothed tip (20) and have two centering pins (41) on the lower side (18) of the toothed plates (16, 16a). The two centering pins (41) are spaced apart from each other on a centering axis (M2), which extends parallel to a transverse axis (QA) extending through the two lateral corners (21, 22) of the rhomboid toothed plates (16, 16a). The centering axis (M2) extends on one side of the first toothed tip (19).

19. The toothed plate (16, 16a) according to claim 17 or 18. Its features are, The toothed plate (16, 16a) is constructed with a first toothed tip (19) and a second toothed tip (20) and has a mark on the upper side (17) of the toothed plate, the mark making the first toothed tip (19) distinguishable from the second toothed tip (20).

20. The toothed plate (16, 16a) according to any one of the preceding claims. Its features are, The toothed plates (16, 16a) are at least partially made of forged steel.

21. A road surface expansion joint device (1). Its features are, The road expansion joint device (1) has at least one beam (7, 10), the beam (7, 10) having at least one toothed plate (16, 16a) cantileveredly fastened to the beam (7, 10) according to any one of the preceding claims.

22. The road expansion joint device (1) according to claim 21. Its features are, The road expansion joint device (1) has at least two diamond-shaped toothed plates (16, 16a) fastened to a first beam (7, 10) at intervals from each other, the toothed plates (16, 16a) being arranged on the first beam (7, 10) such that the first toothed tips (19) of the toothed plates (16, 16a) point in the same direction in a plan view.

23. The road expansion joint device (1) according to claim 22. Its features are, The road expansion joint device (1) has at least two rhomboid toothed plates (16, 16a) fastened to a second beam (7, 10) at intervals from each other. The toothed plates (16, 16a) are arranged on the second beam (7, 10) such that the first toothed tip (19) of the toothed plates (16, 16a) points in the same direction as the first toothed tip (19) of the rhomboid toothed plates (16, 16a) on the first beam (7, 10) in the plan view.

24. The road expansion joint device (1) according to claim 23. Its features are, At least two diamond-shaped toothed plates (16, 16a) are fastened to the corresponding lower beams (7, 10) such that the transverse axis (QA) of the toothed plates extends parallel to the longitudinal axis (LA) of the beams (7, 10) and is preferably aligned with the longitudinal axis (LA) of the beams.

25. The road expansion joint device (1) according to claim 23. Its features are, The diamond-shaped toothed plates (16, 16a) are fastened to the beam (10), which is constructed as a movable central beam (10) of the road expansion joint device (1).

26. The road expansion joint device (1) according to claim 23. Its features are, The road expansion joint device (1) has at least two toothed plates (16, 16a) arranged opposite each other on two beams (7, 10) of the road expansion joint device (1), and the toothed plates (16, 16a) are fastened to the respective lower beams (7, 10) such that the transverse axis (QA) of the toothed plates extends at an inclined angle relative to the longitudinal axis of the beams (7, 10) and preferably extends parallel to each other.

27. The road expansion joint device (1) according to any one of claims 21 to 25. Its features are, The toothed plates (16, 16a) are fastened to the two beams (7, 10) such that the upper sides (17) of the toothed plates (16, 16a) are aligned flush with each other, and the first toothed tip (19) of the toothed plates (16, 16a) at least partially covers the second toothed tip (20) arranged opposite to the first toothed tip (19) in the plan view when the road expansion joint device (1) is pushed together.

28. The road expansion joint device (1) according to claims 21 to 27. Its features are, At least one elongated toothed plate (16, 16a) having a plurality of first toothed tips (19) or a plurality of second toothed tips (20) is fastened to an immovable edge beam (7).

29. The road expansion joint device (1) according to any one of claims 21 to 28. Its features are, The toothed plates (16, 16a) of the two opposing beams (7, 10) are fastened to the beams (7, 10) such that, in the maximum open state of the road expansion joint device (1), there is no continuous gap parallel to the longitudinal axis of the beams (7, 10) between the toothed tips (19, 20) of the toothed plates (16, 16a).

30. The road expansion joint device (1) according to any one of claims 21 to 29. Its features are, In the maximum open state of the road expansion joint device (1), the maximum value of the lateral distance between the two toothed plates (16, 16a) fastened to the first beam (7, 10) and the two toothed plates (16, 16a) fastened to the second beam (7, 10) arranged adjacent to the first beam (7, 10) satisfies the following condition: a ball with a diameter greater than 100 mm cannot be pushed through the toothed plates and the beam (7, 10).

31. A method for fastening a toothed plate (16, 16a) according to any one of claims 17 or 18 to a beam (7, 10) of a road expansion joint device (1), the method comprising the steps of: (a) At least one centering pin (41), preferably at least one of two centering pins (41), and preferably two recesses are formed in the upper side (17) of the beams (7, 10) for receiving the toothed plates (16, 16a); b) Positioning the toothed plates (16, 16a) in the recess by means of the centering pins (41) of the toothed plates (16, 16a); and c) Weld the toothed plates (16, 16a) to secure them to the beams (7, 10).

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