RU211012U1 - APRON FOR TRANSITION BETWEEN TWO HINGED VEHICLE PARTS - Google Patents

Abstract

Apron (1) for transition between two parts (2, 3) of the vehicle hinged to each other, said apron extending in the passage direction (8) and the width direction (10) perpendicular to the passage direction, and contains two support plates (4 , 5), each of which is provided for hinged placement on the end side (12) of the vehicle parts and has an upper side (6) of the base plate, passable at least in sections, and when viewed in the height direction (11) in front of the base plates is provided / at least one connecting element (9) is provided, preferably two connecting elements, wherein the height direction is perpendicular to the passage direction and the width direction and is directed from the upper sides of the base plates. According to the utility model, it is provided that said at least one connecting element is rotatably connected to both base plates on the lower sides (7) of the base plates located opposite to the upper sides of the base plates, in order to ensure that, when parts of the vehicle are displaced, the deviation of the base plates is parallel to the height direction , wherein said at least one connecting element is adapted to be connected to parts of the vehicle only indirectly.

Description

FIELD OF TECHNOLOGY

The present utility model relates to an apron for transition between two parts of a vehicle hinged to each other, in particular a rail vehicle, said apron extending in the direction of passage and a width direction perpendicular to the direction of passage, and comprising two base plates, each of which is provided for hinged placement on the front side of the vehicle parts and has an upper side of the base plate, passable at least in sections, moreover, when viewed in the height direction, at least one connecting element, preferably two connecting elements, is provided in front of the base plates, and the height direction perpendicular to the passage direction and the width direction and directed from the upper sides of the base plates.

BACKGROUND OF THE INVENTION

Aprons for transitions between two parts of a vehicle that are hinged to one another, in particular a rail vehicle, are known per se. Such aprons, as a rule, contain two pass-through base plates pivotally mounted on the end sides of the vehicle parts to ensure that during movement the possibility of taking into account the height displacement of the vehicle parts relative to each other.

It is known from EP 24577961 B1 that, in the case where, in addition, an overlay plate resting on the base plates is provided, means can be provided on the centering link connected to the overlay plate and the ends of the vehicle parts for pressing the base plates against the overlay plate for preventing the formation of a gap between the overlay plate and the base plates during pitching, side pitching and folding, or, respectively, during superimposed movements of the vehicle parts relative to each other.

The disadvantage of the known solutions lies in their complex construction, not least due to the attachment of the centering link to the parts of the vehicle, whereby a relatively large number of parts are used, which leads to relatively high production costs.

OBJECTIVE OF UTILITY MODEL

The object of the present invention is to provide an apron in which the base plates can ideally be deflected in the most structurally simple and inexpensive way possible to reliably follow all movements of the vehicle parts relative to each other, usually occurring during the movement of the vehicle. In addition, the solution proposed by the utility model should not depend on whether an overlay plate is provided or not.

DISCLOSURE OF THE ESSENCE OF THE UTILITY MODEL

To solve this problem in the apron for the transition between two parts of a vehicle hinged to each other, in particular a rail vehicle, and the specified apron extends in the direction of the passage and in the direction of the width perpendicular to the direction of the passage, and contains two base plates, each of which is provided for hinged placement on the end side of the vehicle parts and has an upper side of the base plate, passable at least in sections, and when viewed in the height direction, at least one connecting element, preferably two connecting elements, is provided in front of the base plates, and the direction height perpendicular to the direction of passage and the direction of width and directed from the upper sides of the base plates, according to the utility model, it is provided that at least one connecting element, preferably two connecting elements, is connected / connected with the possibility rotation with both base plates on the lower sides of the base plates located opposite to the upper sides of the base plates, so that when the vehicle parts are displaced parallel to the height direction, cause the base plates to deviate, moreover, the specified at least one connecting element is configured to be connected to the vehicle parts only indirectly, in particular by means of base plates.

The passage direction may also be referred to as the first direction, the width direction as the second direction, and the height direction as the third direction, wherein the first direction, the second direction and the third direction are mutually perpendicular to each other.

The user can walk on the apron parallel to the direction of passage, and in this context, "parallel" also includes the opposite direction (ie, the apron is passable also in the direction opposite to the direction of passage), unless explicitly stated otherwise.

The apron may or may not be provided with an overlay plate. If an overlay plate is not provided, the passage is generally carried out essentially only on the upper sides of the base plates, in which case the upper sides of the base plates need not be completely passable, since the base plates may overlap in sections. If an overlay plate is provided, then, as a rule, the passage is carried out both along the upper sides of the base plates and along the upper side of the overlay plate, and in this case, both the upper sides of the base plates and the upper side can be passable, at least in sections. side of the overlay plate, and this may result in an overlap between the overlay plate and base plates, and vice versa.

The articulation of the support plates on the front sides of the vehicle parts can be realized in a known manner, for example by means of hinges.

The base plates, in particular the upper sides of the base plates, can be made up of one or more parts.

The base plates can be made, for example, from a metal containing in particular one or a plurality of aluminum alloys.

The at least one connecting element or, respectively, the connecting elements can be designed in a way known per se and in a wide variety of ways. For example, sliding gratings and/or toothed racks can be used as connecting elements.

Said at least one connecting element can be made, for example, from a metal containing in particular one or a plurality of aluminum alloys.

As mentioned above, two connecting elements are preferably provided, and more than two connecting elements (ie three, four, etc.) may also be provided. In particular, if two connecting elements are provided, when viewed in the direction of passage, they can be located on both sides of the apron.

The rotatable connection of at least one connecting element with both support plates does not exclude the possibility of other movements due to said connections. The connections can be made in such a way that straight-line movements are possible, at least within a certain range, in particular with a direction component oriented parallel to the height direction. For example, by means of a radial bearing with two degrees of freedom, rotational mobility around an axis of rotation oriented parallel to the height direction and at the same time the possibility of rectilinear movement (within a certain range) parallel to the height direction can be realized. Such bearings capable of rotation about an axis of rotation and translational movement along the axis of rotation are known per se. Here and below, radial bearings are always understood to mean such radial bearings with two degrees of freedom, unless explicitly stated otherwise.

For the sake of completeness, it should be noted that, of course, linear movements with a direction component oriented parallel to the passage direction and/or with a direction component oriented parallel to the width direction are also possible within a certain range.

In the described apron, thanks to the connecting elements connecting two base plates to each other, an optimal deflection of the base plates is ensured when the parts of the vehicle during movement make relative movements relative to each other, and these relative movements, in particular, may include a displacement parallel to the height direction. The optimum deflection of the base plates in turn ensures that the apron can pass without problems even with the indicated relative movements or displacements of the vehicle parts relative to each other.

The fact that at least one connecting element is designed to be connected to vehicle parts only indirectly means that said at least one connecting element is not intended to be connected directly to vehicle parts, i.e. without one or more intermediate elements, and accordingly made with the possibility, in particular, only indirect connection/connection. At the same time, a connection/connection should be understood only as a connection/connection that has the ability to withstand significant mechanical loads that usually occur during the operation of the transition.

By providing not direct connection of at least one connecting element or, respectively, connecting elements to vehicle parts, but only indirect connection, in particular by means of base plates, a significant structural simplification of the connecting elements as such and the apron as a whole becomes possible. In addition, the apron of the utility model requires much fewer parts than prior art solutions, so that the apron of the utility model can also be produced at a lower cost.

The axis of rotation of the connection with the possibility of rotational movement between the connecting element and the base plates can in principle be chosen arbitrarily. In addition, rotational mobility is not necessarily limited to only one axis of rotation, but may include many or even an infinite number of axes of rotation. Accordingly, in a preferred embodiment of the apron according to the utility model, at least one spherical bearing is provided for rotatably connecting at least one connecting element to at least one of the base plates. In mathematical terms, this makes it possible to rotate about an infinite number of axes of rotation, which, in particular with relative movements relative to each other of the vehicle parts running transversely to the height direction, ensures optimal mobility between the at least one connecting element and the base plates and thus optimal deflection of base plates.

In practice, in order to ensure sufficient mobility between the connected elements and thus an optimal deflection of the base plates, it is sufficient if the connecting element or, respectively, the connecting elements are connected by means of a spherical support to only one of the base plates. In such a case, the connection to another base plate can be made, for example, by means of a simple swivel bearing (with exactly one degree of freedom, i.e., rotatable about exactly one axis of rotation) or by means of a radial bearing. In addition to cost advantages, this can also lead to advantages in terms of stability of the obtained support panel arrangement. Of course, it can also be provided that at least one connecting element, preferably the connecting elements, is/are connected to both base plates via spherical supports, so that a maximum of movement between the connected elements is ensured.

In a preferred embodiment of the apron according to the utility model, it is provided that at least one connecting element contains at least one slider, preferably made of synthetic material, on which at least one of the lower sides of the base plates rests slidably. This makes it possible, firstly, to support the corresponding base plate by means of at least one connecting element, which increases the stability when walking on the apron. Secondly, at the same time, it is possible to smoothly slide the corresponding base plate relative to at least one section of at least one connecting element, in particular if relative movements of the vehicle parts relative to each other occur, preferably parallel to the height direction.

As such, such synthetic materials with appropriate anti-friction properties, such as polytetrafluoroethylene, are known.

As indicated above, the apron proposed by the utility model can be made without an overlay plate or with an overlay plate. The overlay plate can be advantageous in particular if comparatively large distances between parts of the vehicle are to be bridged by means of the apron. Accordingly, in a preferred embodiment of the apron proposed by the utility model, it is provided that the apron comprises an overlay plate with the upper side of the overlay plate passing at least in sections, and when viewed parallel to the direction of height, the overlay plate is located at least in sections between the support plates, while at least one connecting element for centering the patch plate is rotatably connected to the patch plate on the lower side of the patch plate, located opposite the top side of the patch plate.

The specified arrangement of the overlay plate relative to the base plates - when viewed in the direction of height, at least one section of one base plate, at least one section of the overlay plate and at least one section of the other base plate are visible next to each other - can be implemented in various ways. The overlay plate may be positioned "above" the base plates, i. e. when viewed in the direction of height, the overlay plate is located behind the base plates; the overlay plate may be positioned "beneath" the base plates, i. e. when viewed in the direction of height, the overlay plate is located in front of the support plates; when viewed in the height direction, the overlay plate may be positioned behind one of the two base plates and in front of the other of the two base plates.

In this embodiment, the at least one connecting element also acts as a centering element for the overlay plate. At the same time, the rotatable connection of at least one connecting element with the overlay plate provides, in particular, the possibility of compensating for the horizontal displacement of the vehicle parts relative to each other (i.e. in a plane perpendicular to the height direction or, respectively, parallel to the passage direction and / or width direction). The centering of the overlay plate, in turn, guarantees the problem-free patency of the apron over the overlay plate with the indicated relative movements or, accordingly, displacements of the vehicle parts relative to each other. In particular, in this way, gaps or gaps between the base plates and the cover plate can be prevented.

In this case, said rotational mobility can be achieved, for example, by means of a swivel bearing allowing rotation about a single axis of rotation, or by means of a radial bearing. Said single axis of rotation may be oriented, for example, perpendicular to the underside of the overlay plate.

However, rotatable connections are of course also possible, allowing rotations about more than one axis of rotation, such as spherical bearings.

According to the above, in a particularly preferred embodiment of the apron according to the utility model, it is provided that, when viewed in the height direction, the overlay plate is located in front of the base plates, the base plates resting, in particular slidably, on the upper side of the overlay plate. That is, in this case, the overlay plate is located under the base plates. To this end, the undersides of the base plates and/or the top side of the cover plate can have their own support area, which, for example, as a result of being made of a suitable material or as a result of a suitable coating (for example, PTFE), ensures that the support plates slide smoothly on the cover plate.

According to the above, in an alternative particularly preferred embodiment of the apron according to the utility model, it is provided that, when viewed in the height direction, the overlay plate is located behind the base plates, the overlay plate resting on the upper sides of the base plates, in particular with the possibility of sliding. That is, in this case, the overlay plate is located above the base plates. To this end, the top sides of the base plates and/or the underside of the cover plate can have their own support section, which, for example, as a result of being made of a suitable material or as a result of a suitable coating (for example, polytetrafluoroethylene), ensures that the cover plate slides problem-free on the base plates.

In a particularly preferred embodiment of the apron according to the utility model, it is provided that at least one connecting element comprises at least one slider, preferably made of synthetic material, on which the underside of the patch plate is slidably supported. This makes it possible, firstly, to support the overlay plate by means of at least one connecting element, which increases the stability when walking on the apron. Secondly, at the same time, it is possible to smoothly slide the overlay plate relative to at least one section of at least one connecting element, in particular if there are relative movements, preferably in the horizontal direction, of the parts of the vehicle relative to each other.

As such, such synthetic materials with appropriate anti-friction properties, such as polytetrafluoroethylene, are known.

As mentioned above, at least one connecting element can be made in a variety of ways. In a preferred embodiment of the apron proposed by the utility model, it is provided that at least one connecting element is made in the form of at least one sliding grid. In this case, the sliding grate can be made in the form of a single-section scissor mechanism or a multi-section scissor mechanism. The sliding grid makes it possible to achieve a reliable connection of the base plates, in particular in the case of relatively large displacements of the base plates relative to each other, comprising both direction components parallel to the passage direction and direction components parallel to the width direction.

In the case of a plurality of connecting elements, it can be provided that one or a plurality of connecting elements, or all of the connecting elements, are made in the form of sliding grids.

By analogy with the above, according to the utility model, a system is provided that contains the first part of the vehicle and the second part of the vehicle, moreover, these two parts of the vehicle are pivotally connected to each other, and a transition is provided between the parts of the vehicle with the apron proposed by the utility model, and at least one connecting element is connected to the vehicle parts only indirectly, in particular by means of base plates. The first vehicle part and the second vehicle part may be rail vehicle parts.

In a preferred embodiment of the proposed utility model of the system, it is provided that hinges are provided for the hinged arrangement of the base plates on the end sides of the vehicle parts. This provides a simple, inexpensive and stable connection so that the base plates can be rotated up and/or down with respect to the corresponding part of the vehicle. In this case, the pivoting takes place around pivot axes which, if the vehicle parts are not displaced relative to each other, preferably run parallel to the width direction.

BRIEF DESCRIPTION OF THE DRAWINGS

Hereinafter, the utility model is described in more detail based on examples of its implementation. Although the drawings, given by way of example, are intended to explain the idea of the utility model, they are in no way narrowing or presenting it in a limiting sense.

The drawings show the following:

fig. 1 is a top axonometric view of the first embodiment of the apron according to the utility model;

fig. 2 is an axonometric view from below of the apron of FIG. one;

fig. 3 is a section of the apron according to FIG. 1, the sectional plane being parallel to the passage direction and the height direction;

fig. 4 is a top axonometric view of a second embodiment of the apron according to the utility model;

fig. 5 is an axonometric view from below of the apron of FIG. 4;

fig. 6 is a section of the apron according to FIG. 4, the sectional plane extending parallel to the passage direction and the height direction;

fig. 7 is a top axonometric view of a third embodiment of the apron according to the utility model;

fig. 8 is an axonometric view from below of the apron of FIG. 7;

fig. 9 is a section of the apron according to FIG. 7, the sectional plane extending parallel to the passage direction and the height direction.

IMPLEMENTATION OF UTILITY MODEL

In FIG. 1 shows an axonometric plan view of a first exemplary embodiment of an apron 1 proposed by the utility model for the transition between the first rail vehicle part 2 and the second rail vehicle part 3, the vehicle parts 2, 3 being pivotally connected to each other, and for clarity only portions of the end faces are shown. sides 12 parts 2, 3 vehicle. Parts 2, 3 of the vehicle and the apron 1 are parts of the proposed utility model of the system.

The apron 1 extends in the passage direction 8 and in the width direction 10 perpendicular to the passage direction 8 . The height direction 11 is perpendicular to both the passage direction 8 and the width direction 10 .

The apron 1 comprises a first base plate 4, which is pivotally connected to the first vehicle part 2 by means of a hinge 17 (see Fig. 2) and located on its end side 12, so that the first base plate 4 can be turned "up" (i.e. . in the height direction 11) or "down" (ie against the height direction 11). In addition, the apron 1 contains a second base plate 5, also by means of a hinge 17 (see Fig. 2) pivotally connected to the second part 3 of the vehicle and located on its end side 12, so that the second base plate 5 can also be turned upwards or way down.

Each of the base plates 4, 5 comprises an upper side 6 of the base plate, at least in portions of which the user can walk when passing through the passage with a direction component parallel to the passage direction 8. The height direction 11 is directed from the upper sides 6 of the base plates.

As in FIG. 2, as well as in the section shown in Fig. 3, it is well shown that under the base plates 4, 5, i.e. when viewed in the height direction 11, in front of the base plates 4, 5, two connecting elements are provided or respectively located, made in the form of a sliding grating 9. When viewed in the direction 8 of the passage, the sliding grating 9 is located on both sides of the transition.

Each of the sliding gratings 9 is rotatably connected both to the first base plate 4 and to the second base plate 5, more specifically to the undersides 7 of the base plates 4, 5. In particular, during the movement of the vehicle parts 2, 3 can move in parallel direction 11 heights. With such an offset, the sliding gratings 9 cause the support plates 4, 5 to deviate or, respectively, rotate, as a result of which the passage is still ensured to be freely passable.

By means of the first support plate 4, the sliding bars 9 are indirectly connected to the first part 2 of the vehicle. By means of a second support plate 5, the sliding bars 9 are indirectly connected to the second part 3 of the vehicle. There is no direct connection of the sliding bars 9 with the parts 2, 3 of the vehicle.

In the shown first embodiment of the apron 1 proposed by the utility model, spherical supports 16 are provided both for rotatably connecting the sliding gratings 9 with the first base plate 4 and for rotatably connecting the sliding gratings 9 with the second base plate 5.

Each of the sliding gratings 9 can be moved apart and shifted in the form of an accordion, due to which the most different relative movements of the parts 2, 3 of the vehicle relative to each other can be taken into account with the direction components oriented parallel to the passage direction 8 and/or parallel to the width direction 10, and /or parallel to the height direction 11 . As can be seen from FIG. 2 and 3, while the lower sides 7 of the base plates 4, 5 can slide on the sliders 19 fixed on the sliding bars 9. In this case, the undersides 7 of the base plates rest on the sliders 19, so that the sliding grids 9 support the base plates 4, 5 and increase the stability of the apron 1 or, respectively, of the transition.

In the embodiments shown, the sliders 19 are made of synthetic material. In the exemplary embodiments shown, the base plates 4, 5 and the sliding grids 9 are made of metal, preferably aluminum alloy.

In the shown first exemplary embodiment, the apron 1, in addition to the support plates 4, 5, also comprises an overlay plate 13 with an upper side 14 of the overlay plate passing through at least in sections. In the first exemplary embodiment, said top plate 13, when viewed in the height direction 11, is positioned behind the base plates 4, 5, the top plate 13 being slidably supported by the base sections 20 on the upper sides 6 of the base plates, see FIG. 3. To improve the anti-friction properties, the bearing portions 20 are made from a suitable synthetic material.

As from FIG. 1 as well as from FIG. 2 it can be seen that, when viewed parallel to the height direction 11, the overlay plate 13 is located at least in sections between the base plates 4, 5 or, respectively, when viewed parallel to the height direction 11, sections of the first base plate 4, the overlay plate 13 and the second base plate 5 are located next to each other.

As appears in particular from FIG. 2, in order to center the overlay plate 13, both sliding gratings 9 are rotatably connected to the underside 15 of the overlay plate opposite the upper side 14 of the overlay plate. This, in particular when the vehicle parts 2, 3 are horizontally displaced relative to each other (i.e. parallel to the passage direction 8 and/or the width direction 10), causes the overlay plate 13 to be positioned in such a way that trouble-free walking on the apron 1 is still ensured.

Each of these connections with the possibility of rotation between the sliding bars 9 and the overlay plate 13 in the first embodiment is implemented by means of a radial bearing 18, which allows rotation 18 around an axis of rotation oriented perpendicular to the lower side 15 of the overlay plate, and translational movements in a certain range parallel to or, respectively, along the specified axis of rotation.

The second embodiment of the apron 1 proposed by the utility model, shown in FIG. 4, fig. 5 and FIG. 6 is basically the same as the first embodiment, except that when viewed in the height direction 11, the overlay plate 13 is located in front of the base plates 4, 5, the base plates 4, 5 being slidably supported by the support sections 20'. on the top side 14 of the overlay plate, see FIG. 6. To improve the anti-friction properties, the bearing areas 20' are made of a suitable synthetic material.

Since between the sliding gratings 9 and the base plates 4, 5 there are relatively large sections of the overlay plate 13 - see Fig. 5, the sliders 19 mounted on the sliding gratings 9 contact the underside 15 of the overlay plate. That is, the bottom side 15 of the patch plate slidably rests on the sliders 19, whereby it becomes possible to support the patch plate 13 by means of the sliding grids 9, which improves the walking stability of the apron 1.

Otherwise, what has been said above with respect to the first embodiment is identically applicable to the second embodiment, so the relevant statements are not repeated, but reference is made to the above explanations.

The third embodiment of the apron 1 according to the utility model, shown in FIG. 7, fig. 8 and FIG. 9 differs from the first two embodiments in that the overlay plate 13 is not provided. That is, the base plates 4, 5 together span the area between the two vehicle parts 2, 3.

In the third exemplary embodiment, when viewed in the height direction 11, the second base plate 5 is positioned behind the first base plate 4, the second base plate 5 being slidably supported by the base portion 20'' on the upper side 6 of the first base plate 4. To improve the anti-friction properties, the bearing portion 20'' is made of a suitable synthetic material.

In order to rotatably connect the sliding gratings 9 with the underside 7 of the first base plate 4, radial bearings 18 are provided in the third embodiment - see in particular FIG. 9, wherein the radial bearings 18 allow rotations about an axis of rotation oriented perpendicular to the lower side 7 of the first base plate 4 and translational movements within a certain range parallel or respectively along said axis of rotation.

The rotatable connection of the sliding gratings 9 with the lower side 7 of the second base plate 5 is realized, as in the other examples shown, by means of spherical supports 16.

Otherwise, what has been said above with respect to the first embodiment is identically applicable to the third embodiment, so the relevant statements are not repeated, but reference is made to the above explanations.

LIST OF REFERENCES

1 - apron

2 - the first part of the vehicle

3 - the second part of the vehicle

4 - first base plate

5 - second base plate

6 - upper side of the base plate

7 - bottom side of the base plate

8 - direction of passage

9 - sliding grille

10 - width direction

11 - height direction

12 - end side of the vehicle part

13 - overlay plate

14 - top side of the overlay plate

15 - bottom side of the overlay plate

16 - spherical support

17 - hinge

18 - radial bearing

19 - slider

20, 20', 20'' - reference section

Claims (8)

1. Apron (1) for the transition between two parts (2, 3) of the vehicle hinged to each other, with the apron (1) extending in the passage direction (8) and in the width direction (10) perpendicular to the passage direction, and contains two base plates (4, 5), each of which is provided for hinged placement on the end side (12) of parts (2, 3) of the vehicle and has an upper side (6) of the base plate, passable at least in sections, and when considering in the direction (11) of the height in front of the base plates (4, 5) a connecting element (9) is provided, and the direction of height (11) is perpendicular to the direction (8) of the passage and the direction (10) of the width and is directed from the upper sides (6) of the base plates, characterized in that the connecting element (9) is rotatably connected to both base plates (4, 5) on the lower sides (7) of the base plates located opposite to the upper sides (6) of the base plates, to ensure deflection of the base plates (4, 5) when the parts (2, 3) of the vehicle are displaced parallel to the direction (11) of the height, and the connecting element (9) is designed to be connected to the parts (2, 3) of the vehicle only indirectly. 2. Apron (1) according to claim 1, characterized in that at least one spherical support (16) is provided for rotatably connecting the connecting element (9) to at least one of the base plates (4, 5). 3. Apron (1) according to one of paragraphs. 1-2, characterized in that the connecting element (9) contains at least one slider (19), preferably made of synthetic material, on which at least one of the lower sides (7) of the base plates rests with the possibility of sliding. 4. Apron (1) according to one of paragraphs. 1-3, characterized in that the apron (1) contains an overlay plate (13) with the upper side (14) of the overlay plate, passable at least in sections, and when viewed parallel to the height direction (11), the overlay plate (13) is at least located between the support plates (4, 5) in sections, wherein the connecting element (9) for centering the overlay plate (13) is rotatably connected to the overlay plate (13) on the lower side (15) of the overlay plate located opposite the upper side ( 14) overhead plate. 5. Apron (1) according to claim 4, characterized in that when viewed in the direction (11) of height, the overlay plate (13) is located in front of the base plates (4, 5), and the base plates (4, 5) are supported, in particular with the possibility of sliding, on the upper side (14) of the overlay plate. 6. Apron (1) according to claim 4, characterized in that when viewed in the height direction (11), the overlay plate (13) is located behind the base plates (4, 5), and the overlay plate (13) is supported, in particular with the possibility sliding, on the upper sides (6) of the base plates. 7. Apron (1) according to one of paragraphs. 4-6, characterized in that the connecting element (9) contains at least one slider (19), preferably made of synthetic material, on which the lower side (15) of the overlay plate rests slidably. 8. Apron (1) according to one of paragraphs. 1-7, characterized in that the connecting element is formed by at least one sliding grid (9).

Images