Structural sliding bearing

Abstract

The invention relates to a structural sliding bearing (1) having at least one sliding surface (2) with a sliding plate (3) and a mating surface which are in sliding contact such that the sliding plate (3) can be moved relative to the at least one mating surface and which is arranged on a back plate (4), the mating surface is formed as a slide piece (5). The slide piece (5) is configured to have a slide piece protrusion (6) that protrudes at least partially beyond the back plate (4). Other embodiments of the invention provide arrangements as seismic protection devices and as spherical plain bearings.

Description

[0001] The present invention relates to a structural sliding bearing, which includes at least one sliding surface having a sliding plate and a mating surface, the sliding plate and the mating surface are in sliding contact so that the sliding plate can slide relative to the at least one mating surface, and the mating surface is arranged on a back plate, wherein the mating surface is formed as a sliding sheet.

[0002] Such structural plain bearings have long been known. They are used in structures such as buildings, industrial plants and bridges to support these structures or parts of structures, such as abutments or bridge decks on supports. In addition, certain structural forms can be used as earthquake protection devices to reduce the shear forces generated by earthquakes on the structure. In Europe, the basic requirements for the planning, design and construction of structural bearings are specified in EN 1990 and EN 1337 respectively. As far as earthquake protection devices are concerned, they are specified in EN 1998 and EN 15129.

[0003] Here, with respect to sliding surface, refers to the combination of a sliding plate and a mating surface that allows relative displacement. The sliding plate is usually made of a sliding material such as PTFE, UHMWPE or another material with a desired generally lower friction characteristic. The mating surface is made of such a material, and the sliding material combination of this material and the sliding plate can ensure the desired friction characteristics in the sliding surface. The mating surface is usually made of a chrome-plated steel surface or a sliding sheet such as made of stainless steel, or is coated or otherwise processed so that it can have the desired sliding characteristics in combination with the sliding plate. The sliding plate and the mating surface do not have to be flat. Especially, in earthquake protection devices, the sliding plate and the mating surface are usually spherically curved.

[0004] A backing plate is to be understood as a metal component for supporting a sliding plate or a mating surface with which the structural plain bearing is attached to the structure. The backing plate can also be used at least partially as a mating surface, i.e. the surface of the backing plate is machined or treated in such a way that the backing plate in combination with the sliding plate sliding thereon ensures the desired sliding properties. For example, a chrome-plated steel surface of the backing plate can also be used as a mating surface.

[0005] Structural plain bearings are designed for both displacements that occur under service conditions and displacements that occur due to events that are irregular and do not necessarily have to occur during the service life of the structural bearing. EN 1990 defines the limit states that certain characteristics of the structure or its structural bearing must ensure. Serviceability limit states include load conditions that correspond to normal service conditions and do not cause any damage to the structure. In contrast, ultimate limit states include load conditions that correspond to extreme events. Extreme events can be, for example, earthquakes, fires, explosions or impacts on the structure. The ultimate limit state ensures the load-bearing capacity of the structure during such extreme events so that the structure does not fail. Here, damage may occur within certain limits. The limit states must be determined individually for the respective structure and structural bearing, since they depend, for example, on the type of structure and the expected load conditions and may vary greatly. Ultimately, the limit states represent requirements that the respective structural plain bearing must meet. For example, the structural plain bearing must have a displacement capacity that corresponds to the expected displacement of the structure for the respective limit state.

[0006] Therefore, the known structural plain bearings are cooperatively dimensioned by the designer of the structure and the designer of the structural bearing so that they meet the corresponding requirements in the above-mentioned two basic states. However, structural bearings with a large difference between the displacement in the serviceability limiting state and the displacement in the ultimate limiting state are dimensioned relatively large. This is because, up to now, for safety reasons, it has been assumed that the bearing must have sufficient displacement capacity in the ultimate limiting state and that in this state the back plate still supports the mating surface over its entire surface. This results in a relatively large back plate, and this can be a disadvantage if there is limited space at the installation location of the bearing. In addition, relatively large dimensioned structural plain bearings are associated with correspondingly high costs.

[0007] The invention is therefore based on the problem of providing a structural plain bearing which has a more compact design and is less expensive to produce while maintaining the same level of safety.

[0008] The solution to this problem is achieved by a universal structural sliding bearing according to the invention, which has a sliding piece with a sliding piece protrusion that protrudes at least partially beyond the back plate. Therefore, the sliding piece is not completely supported by the back plate, but protrudes at least partially at the side. The term sliding piece protrusion should not be understood restrictively. The sliding piece can be suspended from the back plate at its edge or rest beyond the back plate, that is, the sliding piece can be realized, for example, as a sliding piece protrusion or a sliding piece protrusion.

[0009] The solution according to the invention is based on the following discovery: the back plate can be dimensioned smaller while maintaining the same displacement capacity without compromising the safety of the bearing. However, this is only possible when the sliding sheet is at least partially larger than the back plate. Investigations by the applicant have shown that it is the projection of the sliding sheet that produces the following effect: the sliding plate is not affected as much as previously assumed when it is pushed over the edge of the back plate. For the applicant, this is explained by the fact that in the area of ​​the sliding sheet projection, it is precisely because of the sliding sheet that there are no sharp edges where the sliding sheet may be caught or planed off. The sliding sheet prevents or covers the sharp edges by its projection. Therefore, the back plate can be made slightly smaller. Therefore, compared with conventional structural sliding bearings with the same displacement capacity, the structural sliding bearing according to the invention can be manufactured in a more cost-effective manner.

[0010] In other words, the structured sliding bearing according to the invention provides an increased displacement capability compared to a conventional bearing having a back plate of the same size.

[0011] In a further embodiment, the structural plain bearing is designed as an earthquake protection device or earthquake isolator. Therefore, the structural plain bearing is designed so that it at least reduces the influence of earthquakes on the structure. This is done, for example, by using curved sliding surfaces that allow a pendulum motion of the structure. This pendulum motion caused by the earthquake then leads to the fact that the fundamental vibration period of the structure is no longer in the period range of the maximum earthquake energy, and the energy of the earthquake is dissipated in the plain bearing of the structure.

[0012] Alternatively or additionally, the back plate is dimensioned so large that, in the limited state of suitability of the structural plain bearing, the sliding plate, in the case of maximum lateral displacement, is in full-surface contact with a portion of the sliding sheet in which the sliding sheet is still supported by the full-surface of the back plate. Thus, the sliding plate of the structural plain bearing is always in contact with the portion of the sliding sheet supported by the full-surface of the back plate during displacements due to load conditions occurring in the use state. In other words, the back plate is dimensioned so large that it fully supports the sliding sheet in the corresponding portion.

[0013] In a further implementation, the back plate is dimensioned so large that the sliding plate partially rests on the sliding sheet protrusion with maximum lateral displacement under the load bearing capacity limiting conditions, especially under the load bearing capacity limiting conditions caused by earthquake load conditions. Therefore, at least under the extreme limiting conditions, the sliding plate can also slide onto the sliding sheet protrusion. Therefore, the back plate can be dimensioned to be smaller, making the structural sliding bearing more compact and cost-effective. This is based on the following concept: the structural sliding bearing is usually checked for its condition and any damage after the situation corresponding to the extreme limiting conditions, and repaired or replaced if necessary. Therefore, the sliding sheet does not have to be fully supported by the back plate under the extreme limiting conditions, as long as it is ensured that the structural sliding bearing does not fail. This may occur, for example, because the sliding plate completely slides off the sliding sheet or because a part of the bearing is tilted laterally.

[0014] In practice, the back plate is dimensioned so large that the sliding piece is supported by the full surface of the back plate to the extent that the bearing forces generated in the limiting state of the load bearing capacity pass through this part of the back plate. The back plate is therefore dimensioned so large that the bearing forces generated in the limiting state of the load bearing capacity are introduced into the back plate via the sliding piece, so that the sliding piece is completely supported by the back plate in the region of the generated bearing forces. This ensures that in the limiting state of the load bearing capacity, the sliding piece projection is not loaded with a maximum lateral displacement, so that the sliding piece projection fails, for example due to the sliding piece tilting to one side.

[0015] In a further embodiment, at least one lateral protrusion is provided at one back plate to support one of the sliding sheet protrusions, preferably one protrusion is provided for each sliding sheet protrusion. Thus, in the region of the sliding sheet protrusion, a protrusion can be provided to support the sliding sheet. This ensures that the sliding sheet is in contact with the sliding plate even when forces are applied to the sliding sheet protrusions. The protrusions also reduce the deflection of the sliding sheet protrusions when the sliding sheet protrusions are loaded. Thus, the back plate of the structural sliding bearing according to the invention can be dimensioned to be smaller than the back plate of a conventional structural sliding bearing.

[0016] For this purpose, the projection can be connected to the back plate by means of a strain-fit assembly, a screw connection and / or by means of welding. Thus, the projection can then be attached to the back plate of the structural plain bearing. This makes it possible to produce the back plate with the projection in a cost-effective manner. It is even conceivable that the displacement capacity of existing bearings can be increased in this way.

[0017] In a further embodiment, the structural plain bearing has a sliding element. In particular, the sliding element can be a rigid sliding element or a joint sliding element. Different geometric shapes are conceivable, whereby a cap shape is a particularly common shape. In this case, the structural plain bearing is a spherical plain bearing, the structure of which is known per se. The joint sliding element allows the back plates to rotate relative to each other, whereby torsions of the structure can be absorbed in the structural bearing. On the other hand, a structural bearing with a rigid sliding element cannot absorb these torsions.

[0018] In practice, a structural plain bearing has at least two sliding surfaces. The sliding surfaces can therefore be designed for different displacements. This means that the structural plain bearing can be better designed for the structure. For example, by at least two sliding surfaces, a greater displacement capacity can also be achieved.

[0019] In a further embodiment, at least one sliding surface has a limiting device for limiting the displacement capacity of the structural sliding bearing. The limiting device can be, for example, a guide rail or a stop. The limiting device limits the displacement of the structural sliding bearing in at least one direction. Thus, an undesired displacement or a displacement exceeding a certain value can be prevented.

[0020] It may be useful for one sliding surface to have a different coefficient of friction than at least one other sliding surface. For example, one sliding surface may be designed for displacements in operating conditions, while another sliding surface has a higher coefficient of friction, for example in order to dissipate additional energy in the event of a large displacement at the extreme limit of the load-bearing capacity in the event of an earthquake.

[0021] Furthermore, the sliding surface has a radius of curvature that is different from the radius of curvature of at least one other sliding surface. Sliding surfaces of different radii of curvature allow the sliding surface to be designed for different load situations.

[0022] Further implemented, the sliding surface has a friction coefficient that varies from the inside (center of the surface) along the surface of the sliding plate to the outside (edge ​​of the surface). The varying friction coefficient allows the friction characteristics to be designed for different lateral displacements. This means, for example, that the friction coefficient can increase with increasing displacement and thus more energy can be dissipated by a greater displacement, or vice versa, or the friction coefficient describes any function of the displacement.

[0023] In a further embodiment, at least one sliding surface has a radius of curvature that varies from the inside to the outside. Due to the variation in the radius of curvature of the sliding surface, the structure is lifted more or less with increasing displacement. This means that more or less energy can be dissipated with a larger displacement than with a smaller displacement.

[0024] Preferably, at least one sliding plate has a circular shape in a plan view. In particular in this case, the sliding plate advantageously has a radius that is different from the radius of at least one other sliding plate. Thus, a sliding plate can have a larger or smaller radius than another sliding plate. By using sliding plates of different sizes, the friction properties of the sliding plates can be designed differently from each other and thus the structural plain bearing can be individually adapted to the structure.

[0025] In a further embodiment, the sliding plate has an inner sliding disc and an outer sliding ring at least partially surrounding the sliding disc. The outer sliding ring at least partially surrounding the inner sliding disc can increase the surface area of ​​the sliding plate. This reduces the wear of the sliding plate because the load is transmitted over a larger area. In addition, in the event of damage or excessive wear, the inner sliding disc and the outer sliding ring can be replaced independently of each other. It is also conceivable that the outer sliding ring partially protrudes beyond the edge of the sliding plate at the maximum lateral displacement. It is also conceivable that when the bearing moves backwards from the maximum lateral displacement, the outer sliding ring is damaged or torn, while the inner sliding disc is not damaged.

[0026] It may be advantageous that the outer sliding ring is spaced apart from the inner sliding disk. The distance between the outer sliding ring and the inner sliding disk allows them to deform during lateral displacement without affecting the other of the outer sliding ring and the inner sliding disk. This prevents excessive wear due to contact between the inner sliding disk and the outer sliding ring.

[0027] Alternatively or additionally, the inner sliding disk has a different friction coefficient compared to the outer sliding ring. Due to the different friction values ​​of the inner sliding disk and the outer sliding ring, the sliding characteristics can be designed individually.

[0028] Further implemented, the sliding sheet is dimensioned so large that when the sliding plate is displaced to reach the maximum displacement capacity, the edge of the sliding sheet is additionally obtained. The larger size of the sliding sheet prevents parts of the sliding plate from being sheared off by the edge of the sliding sheet, for example due to lateral expansion caused by deformation of the sliding plate at the maximum lateral displacement. This reduces the wear of the sliding plate at the maximum lateral displacement. Ideally, the edge is completely circumferential.

[0029] The sliding sheet can be connected to the back plate by force fit and / or form fit. In particular, this can be achieved in a way that the sliding sheet is partially recessed into the back plate. Therefore, the recess only partially surrounds the circumference of the sliding sheet. The partial recess makes it possible, for example, to size the back plate smaller than the sliding sheet and to provide a sliding sheet protrusion on the sliding sheet. Investigations have shown that the partial recess of the sliding sheet is sufficient to securely fasten the sliding sheet to the back plate. The recess can be composed of a plurality of sections or a continuous section arranged around the sliding sheet.

[0030] Alternatively or further, the sliding piece is fastened to the back plate by means of at least one fastening means, such as nails, welded connections, screws, adhesive joints, retaining bolts and / or by bolts protruding into recesses in the back plate, the recesses preferably being as precise as possible. By fastening the sliding piece to the back plate by means of one of the above fastening means or by a combination of at least two of the above fastening means, slipping of the sliding piece is prevented. These means can be used, for example, if the cavity machining of the sliding piece is not sufficient for fixing alone or if there is no cavity machining. This ensures that the structural sliding bearing has sliding characteristics according to the design and that the sliding piece cannot be displaced due to the action of forces or load conditions.

[0031] In the following, the invention is explained in more detail with reference to an example of embodiment shown in the accompanying drawings. In the accompanying drawings, schematically shown:

[0032] Figure 1A It is a cross-sectional view through a universal structural sliding bearing at a central position;

[0033] Figure 1B is the state of maximum lateral displacement through the limit limiting state Figure 1A A cross-sectional view of a structured sliding bearing shown in;

[0034] Figure 2A It passes through along the section plane AA Figure 1A A cross-sectional view of a structured sliding bearing shown in;

[0035] Figure 2B It passes through along the section plane AA Figure 1B A cross-sectional view of a structured sliding bearing shown in;

[0036] Figure 3A is a cross-sectional view through a first embodiment of a structured sliding bearing according to the invention at a central position;

[0037] Figure 3B is the state of maximum lateral displacement through the limit limiting state Figure 3A A cross-sectional view of a structured sliding bearing shown in;

[0038] Figure 4A It passes through along the cross-sectional plane BB Figure 3A A cross-sectional view of a structured sliding bearing shown in;

[0039] Figure 4B It passes through along the cross-sectional plane BB Figure 3B A cross-sectional view of a structured sliding bearing shown in;

[0040] Figure 5Ais a cross-sectional view through a structural sliding bearing with a protrusion according to a second embodiment of the present invention at a central position;

[0041] Figure 5B is the state of maximum lateral displacement through the limit limiting state Figure 5A A cross-sectional view of a structured sliding bearing shown in;

[0042] Fig. 6A is a cross-sectional view through a sliding member of a third embodiment having an inner sliding disk and an outer sliding ring surrounding the inner sliding disk;

[0043] Figure 6B The third embodiment of the invention has a state of maximum lateral displacement through the limit limiting state. Fig. 6A A cross-sectional view of a structural sliding bearing of a sliding member shown in ;

[0044] Fig. 7A is a cross-sectional view through a back plate and a sliding sheet having a sliding sheet protrusion of a structural sliding bearing according to a fourth embodiment of the present invention; and

[0045] Figure 7B yes Fig. 7A , wherein the sliding piece has a sliding piece protrusion.

[0046] Similar parts or elements are given the same reference numerals in the drawings.

[0047] Figures 1A to 2B The central position ( Figure 1A and Figure 2A ) and with a limiting state ( Figure 1B and Figure 2B ) is a cross-section of a universal structural sliding bearing 1 with maximum displacement under .

[0048] The universal structural sliding bearing 1 is composed of two back plates 4 arranged one above the other, each of which has four recesses 11 for fastening to the structure, and the back plates 4 are fastened to the structure using these recesses 11. A sliding sheet 5 is attached to each of the back plates 4. In this example, the sliding sheet 5 has a circular shape and is concave. Each sliding sheet 5 has a central axis M passing through the center of the sliding sheet 5. The back plates 4 are arranged so that the surfaces of the sliding sheets 5 face each other. A sliding member 8 is arranged between the sliding sheets 5. The sliding member 8 has two convex surfaces, each of which has a convex sliding plate 3 attached to it. The curvature radius of the concave sliding sheet 5 and the convex sliding plate 3 is designed so that the surface of the sliding plate 3 is in full surface contact with the corresponding sliding sheet 5. The sliding plates 3 are each in sliding contact with the sliding sheet 5 and form a sliding surface 2 with the sliding sheet 5.

[0049] Figure 1A and Figure 2A The structured plain bearing 1 is shown in a central position. Figure 2A Shown along Figure 1A The cross section of the cross section plane AA is shown in FIG. 8 . The sliding member 8 is arranged in a central position between the back plates 4 . In the central position, the central axis M1 of the upper sliding piece, the central axis M2 of the lower sliding piece and the vertical axis of the sliding member 8 coincide.

[0050] Figure 1B and Figure 2B The structural plain bearing 1 is shown in the extreme limit state along the sectional plane. Here, the sliding element 8 is displaced laterally to the maximum extent, so that the maximum displacement capacity of the structural plain bearing 1 is utilized. At the maximum displacement, the sliding plate 3 on the sliding element 8 is displaced on the sliding sheet 5 to such an extent that the edge of the sliding plate 3 touches the edge of the sliding sheet 5, but the sliding plate 3 is still in full surface contact with the sliding sheet 5. Due to the geometry of the sliding element 8 and the sliding sheet 5, the distance between the back plates 4 at the maximum displacement of the structural plain bearing 1 is greater than the distance between the back plates 4 in the central position.

[0051] Figure 3A and Figure 4A The structural plain bearing 1 according to the invention is shown in a centered position. Figure 1A and Figure 2A Unlike the general structural sliding bearing 1 shown in FIG, the sliding plate 5 has a sliding plate protrusion 6 at the edge that protrudes laterally beyond the back plate 4. Figure 4A and Figure 4B As can be seen in FIG. 5 , the sliding piece protrusions 6 are formed only in four partial regions of the circumferential line of the sliding piece 5 . Therefore, the sliding piece 5 does not completely protrude beyond the back plate 4 .

[0052] Due to the slide tab 6, the slide 8 can be partially displaced over the edge of the back plate 4 under load bearing capacity limiting conditions, which Figure 3B and Figure 4B However, this is only to the extent that the sliding plate 3 of the sliding member 8 is still in full surface contact with the sliding sheet 5. Therefore, FIG. 3A to FIG. 4B The displacement capacity of the structural sliding bearing 1 according to the present invention is greater than Figures 1A to 2B The displacement capacity of the general structural sliding bearing 1 in the embodiment of the present invention is improved, and the back plate 4 has the same size. Alternatively, if the sliding sheet 5 has the same size, the back plate 4 can be sized smaller than before.

[0053] exist Figure 5A In the second exemplary embodiment of the structured plain bearing 1 according to the invention shown, the structured plain bearing 1 is in a central position. Figure 4ACompared to the first exemplary embodiment shown in , the structural plain bearing 1 of the second exemplary embodiment has a projection 7 for each sliding plate projection 6 , which is arranged laterally on the back plate 4 and supports the sliding plate projection 6 over its entire surface.

[0054] Figure 5B Shown through Figure 5A A cross section of a structural plain bearing 1 of a second embodiment of the present invention is shown in a state of load bearing capacity limitation and lateral displacement to the maximum extent. The sliding plate 3 attached to the sliding member 8 is in full surface contact with the sliding sheet 5, which is supported by the protrusion 7 at the sliding sheet projection 6.

[0055] Fig. 6A 1 shows a sliding member 8 of a third embodiment of a structural sliding bearing 1 according to the present invention. The sliding plates 3 arranged on the sliding member 8 are each composed of an inner sliding disk 9 and an outer sliding ring 10 surrounding the inner sliding disk. The outer sliding ring 10 is arranged to be spaced apart from the inner sliding disk 9.

[0056] Figure 6B The structural sliding bearing 1 of the third embodiment with the maximum lateral displacement in the extreme limiting state is shown. Here, the edge of the inner sliding disk 9 touches the edge of the sliding sheet 5, so that the inner sliding disk 9 is in full-surface contact with the sliding sheet 5 and is supported by the full-surface of the back plate 4. Therefore, the outer sliding ring 10 surrounding the inner sliding disk 9 is partially displaced beyond the edge of the sliding sheet 5. Therefore, the crescent-shaped portion of the outer sliding ring 10 is no longer in contact with the sliding sheet 5, but is located outside the sliding sheet 5 without support.

[0057] Fig. 7A The back plate 4 and the slide 5 of the third embodiment are shown. This embodiment also has slide protrusions 6, but these slide protrusions are designed so that they are completely located above the back plate 4 and are not supported by the back plate 4. The slide protrusions 6 of the third embodiment can also be a single slide protrusion 6 that encloses the entire slide 5.

[0058] Figure 7B A top view of the back plate 4 is shown of an embodiment in which the sliding piece projection 6 surrounds the sliding piece 5 and the sliding piece projection 6 is not supported by the back plate 4 .

[0059] Reference numerals

[0060] 1Structural sliding bearings

[0061] 2 Sliding surface

[0062] 3 Sliding panels

[0063] 4 Back Panel

[0064] 5 Slide

[0065] 6 Sliding piece protrusion

[0066] 7 Lateral protrusions

[0067] 8 Slide

[0068] 9Inner sliding ring

[0069] 10External sliding ring

[0070] 11 Recess for fastening the structural sliding bearing

[0071] The center axis of the sliding piece on M1

[0072] The center axis of the lower sliding piece of M2

Claims

1. A structural sliding bearing (1), the structural sliding bearing (1) having at least one sliding surface (2), the at least one sliding surface having a sliding plate (3) and a mating surface, the sliding plate (3) and the mating surface being in sliding contact so that the sliding plate (3) can move relative to at least one of the mating surfaces, and the mating surface is arranged on a back plate (4), wherein: The mating surface is formed as a sliding sheet (5), It is characterized in that The sliding piece (5) has a sliding piece protrusion (6) which at least partially protrudes beyond the back plate (4).

2. The structured sliding bearing (1) according to claim 1, It is characterized in that The structural sliding bearing (1) is formed as an earthquake protection device.

3. The structured sliding bearing (1) according to claim 1 or 2, It is characterized in that The back plate (4) is dimensioned so large that, in the limited state of suitability of the structural sliding bearing (1), the sliding plate (3) is in full-surface contact with a portion of the sliding sheet (5) in the case of maximum lateral displacement, in which the sliding sheet (5) is still supported by the back plate (4) over its full surface.

4. The structured plain bearing (1) according to one of the preceding claims, It is characterized in that The back plate (4) is dimensioned so large that the sliding plate (3) partially rests on the sliding piece projection (6) with maximum lateral displacement in an extreme limiting state of load bearing capacity, in particular in a limiting state of load bearing capacity caused by seismic load conditions.

5. The structured sliding bearing (1) according to claim 4, It is characterized in that The back plate (4) is dimensioned so large that the sliding sheet (5) is supported by the back plate (4) at the location of the generated vertical load.

6. Structural plain bearing (1) according to one of the preceding claims, It is characterized in that At least one lateral protrusion (7) is provided on the back plate (4) to support one of the sliding sheet protrusions (6), preferably one protrusion (7) is provided for each sliding sheet protrusion (6).

7. The structured sliding bearing (1) according to claim 6, It is characterized in that The protrusion (7) is connected to the back plate (4) by means of an expansion joint, a screw connection and / or by means of welding.

8. The structured plain bearing (1) according to one of the preceding claims, It is characterized in that The structured sliding bearing (1) has a sliding element (8), in particular an intrinsically rigid or joined sliding element (8).

9. The structured plain bearing (1) according to one of the preceding claims, It is characterized in that The structured sliding bearing (1) has at least two sliding surfaces (2).

10. The structured plain bearing (1) according to one of the preceding claims, It is characterized in that At least one sliding surface (2) has limiting means for limiting the displacement capacity of the structural sliding bearing (1).

11. The structured plain bearing (1) according to one of the preceding claims, It is characterized in that The sliding surface (2) has a different coefficient of friction than at least one other sliding surface (2).

12. The structured plain bearing (1) according to one of the preceding claims, It is characterized in that The sliding surface (2) has a different radius of curvature than at least one other sliding surface (2).

13. The structured plain bearing (1) according to one of the preceding claims, It is characterized in that At least one sliding surface (2) has a friction coefficient that varies from the inside to the outside along the surface of the sliding plate (3).

14. The structural sliding bearing according to claim 12, It is characterized in that At least one sliding surface (2) has a radius of curvature that varies from the inside to the outside.

15. The structured plain bearing (1) according to one of the preceding claims, It is characterized in that At least one sliding plate (3) has a circular shape in plan view.

16. The structured plain bearing (1) according to one of the preceding claims, It is characterized in that The sliding plate (3) has a different radius than at least one other sliding plate (3).

17. The structured plain bearing (1) according to one of the preceding claims, It is characterized in that The sliding plate (3) has an inner sliding disk (9) and an outer sliding ring (10) which at least partially surrounds the sliding disk (9).

18. The structured sliding bearing (1) according to claim 17, It is characterized in that The outer sliding ring (10) is spaced apart from the inner sliding disc (9).

19. The structured sliding bearing (1) according to claim 17 or 18, It is characterized in that The inner sliding disk (9) and the outer sliding ring (10) have different friction coefficients.

20. The structured plain bearing (1) according to one of the preceding claims, It is characterized in that The sliding piece (5) is dimensioned so large that an additional edge of the sliding piece (5) is produced when the sliding plate (3) is displaced to reach the maximum displacement capacity.

21. The structured plain bearing (1) according to one of the preceding claims, It is characterized in that The sliding sheet (5) is connected to the back plate (4) by force fit and / or form fit.

22. The structured plain bearing (1) according to one of the preceding claims, It is characterized in that The sliding sheet (5) is partially recessed into the back plate (4).

23. The structured sliding bearing (1) according to claim 21 or 22, It is characterized in that The slide (5) is fastened to the back plate (4) by means of at least one fastening means such as nails, a welded connection, screws, an adhesive connection, retaining bolts and / or by bolts protruding into a recess of the back plate (4), the recess preferably being as precise as possible.

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