Hydrodynamic or hydrostatic sliding bearing, method for setting a bearing play on a hydrodynamic or hydrostatic sliding bearing, and wind turbine

Abstract

The invention relates to a hydrodynamic or hydrostatic sliding bearing (1) for rotatably supporting a shaft (3), in particular in a wind turbine (2), comprising at least one connection structure (6), a first sliding element (4) which has a first sliding surface (5) and is arranged on a connection structure (6) in a radially and / or axially displaceable manner, wherein a first ramp portion (7) on the at least first sliding element (4) and a corresponding second ramp portion (8) on the connection structure (6) are designed such that an axial offset of the sliding element (4) with respect to the connection structure (6) causes a radial offset of the sliding element (4), and / or vice versa, such that the bearing play of the sliding element (4) with respect to the shaft (3) can be adjusted, and wherein the sliding element (4) has a spherical surface (45) on the opposite side of the first sliding surface (5) and wherein the connection element (44) has a spherical surface (46) corresponding thereto in order to movably arrange the sliding element (4) on the connection element (44).

Description

[0001] P240946

[0002] - 1 -

[0003] Hydrodynamic or hydrostatic sliding bearing and methods for adjusting bearing clearance on a hydrodynamic or hydrostatic sliding bearing and wind turbine

[0004] The present invention relates to a hydrodynamic or hydrostatic sliding bearing for the rotatable support of a shaft, particularly in a wind turbine, comprising at least one first sliding element with a first sliding surface, which is arranged to be radially and / or axially displaceable on a connecting structure. The invention further relates to a method for adjusting the bearing clearance of a hydrodynamic or hydrostatic sliding bearing and a wind turbine.

[0005] Nowadays, rolling bearings are commonly used for rotor support in wind turbines. However, the use of plain bearings for such rotors has also been proposed, as for example in DE 102 55 745 A1.

[0006] The use of plain bearings in the transmission gears for wind turbines is also generally known, as shown in EP 1 184 567 A2. Another application for plain bearings in wind turbines is as a tower slewing ring bearing, as is also known from DE 100 43 936 A1. Furthermore, it is also known to use plain bearings for supporting the rotor blades of a wind turbine, as is evident, for example, from DE 10 2005 051 912 A1.

[0007] All possible applications of plain bearings within a wind turbine have in common that sufficient and reliable lubrication is essential for the longevity and operational reliability of such bearings. The oil pressure typically required for lubricating the plain bearings, or...

[0008] In hydrostatic plain bearings, the flow rate is typically supplied by an electric pump (e.g., a gear pump). Such a hydrostatic plain bearing thus has an active lubrication circuit, which is maintained by an external pump and circulated through the bearing gap between the moving elements. (See P240946.)

[0009] - 2 -

[0010] A thin hydrostatic support film builds up in the bearing gap, which reduces the friction between elements moving relative to each other.

[0011] In addition to hydrostatic plain bearings, hydrodynamic plain bearings are also known, in which the lubricating film is only generated by the movement of the plain bearing. This is generally achieved by a wedge-shaped lubrication gap, so that the force transmission occurs via the interposed lubricant film in the lubricant carried into the constriction by the surface of the moving bearing part.

[0012] Segmented hydrostatic or hydrodynamic plain bearings represent a technically interesting solution for the rotor support (main bearing) of wind turbines in the 10 MW range and above. Due to the size of the turbines, rolling bearings would be required in a size that poses challenges in both manufacturing and logistics. Furthermore, segmented plain bearings can potentially be replaced or repaired directly on the tower in the event of damage. For the proper functioning of the plain bearing, it is essential to precisely align the individual sliding elements and to set a uniform, very small clearance between the individual segments and the rotor shaft. Once the clearance has been set, the segments must be easily and securely fastened.

[0013] The object of the invention is therefore to provide a hydrodynamic or hydrostatic plain bearing that enables precise and easy-to-assemble bearing clearance adjustment and fixing of a sliding element. Furthermore, the invention aims to realize an optimized method for adjusting the bearing clearance of a hydrodynamic or hydrostatic plain bearing and an improved wind turbine.

[0014] This problem is solved by a hydrodynamic or hydrostatic sliding bearing for the rotatable support of a shaft, particularly in a wind turbine, comprising at least one connection structure, a first sliding element with a first sliding surface, which is arranged radially and / or axially displaceable on the connection structure via at least one connecting element. The bearing is classified as an axial or radial bearing P240946

[0015] - 3 - formed. A first ramp section is formed on the connecting element and a corresponding second ramp section on the connecting structure such that an axial offset of the connecting element relative to the connecting structure causes a radial offset of the connecting element and / or vice versa, so that the bearing clearance of the sliding element positioned on it relative to the shaft can be adjusted.

[0016] This offers the advantage of creating an improved possibility for the exact positioning of the sliding element on an inclined plane.

[0017] The sliding element also has a spherical surface on the opposite side, i.e., on the side facing away from the sliding surface and the shaft center, and the connecting element has a corresponding spherical surface to allow the sliding element to be movably mounted on the connecting element. This can also be described as an axial spherical bearing. Surprisingly, it has been found that an ideal sliding bearing arrangement for wind turbine shafts can be implemented using the bearing arrangement proposed above. This allows for ideal adjustment of the sliding element positions. Furthermore, the spherical surfaces enable an ideal, movable, i.e., articulated, mounting of the sliding elements and the shaft positioned on them. This is particularly important when it comes to compensating for shaft misalignments caused by varying operating conditions or wear-related positional deviations.Furthermore, it has surprisingly been found that it is particularly advantageous if the spherical bearing is provided directly as the opposite side of the sliding surface on the sliding element. While this one-piece design is rather impractical due to the more complex manufacturing process, it results in improved durability and corrosion resistance in operation by eliminating an additional joint in the bearing. In connection with the invention, the sliding element is defined as having, for example, a steel support body that may include a sliding layer and, optionally, an intermediate layer located between the sliding layer and the steel support body. P240946.

[0018] - 4 -

[0019] In conjunction with the ramp-shaped height adjustment, which is implemented by means of a connecting element that has a spherical surface complementary to the spherical surface of the sliding element, an ideal sliding bearing that is adjustable in height and tolerant with regard to shaft misalignment is proposed.

[0020] The connection structure can, for example, be designed as a bearing ring. A bearing ring is particularly preferred as a separate component, allowing the plain bearing to be pre-assembled modularly and thus ready for use at a specific location, already fitted with the appropriate sliding elements. It would also be possible for the bearing ring to be segmented. The connection structure could also be formed from a part of a housing. Alternatively, a connection structure could be formed from a component of a wind turbine structure. This can have the advantage that only relatively small elements of the plain bearing need to be transported into a wind turbine nacelle, which can offer both logistical and assembly advantages.

[0021] It would also be conceivable, in principle, to provide a displacement measuring device that is integrated into or on the sliding element or connecting element and can be used during assembly work to correctly adjust the height of the sliding element.

[0022] It would also be advantageous to arrange a strain gauge on or in the sliding element or the connecting element in order to provide a metrological recording of the loads acting on the sliding element, so that the load acting on the sliding element to be installed can be measured and the height can be adjusted, if necessary, to the wear condition of other sliding elements present in the sliding bearing, so that one sliding element is not subjected to a significantly higher load than the other sliding elements.

[0023] According to an advantageous embodiment of the invention, the sliding element can be formed from a metallic material, in particular steel. The advantage of this embodiment is that, in particular, steel P240946

[0024] - 5 - exhibits good dynamic strength. Alloyed heat-treatable steels are particularly preferred in this context. In principle, it would also be possible to make the sliding element from aluminum or an aluminum alloy.

[0025] The plain bearing preferably comprises a plurality of connecting and sliding elements, each with a sliding surface. Preferably, the sliding elements are essentially identical. This high degree of uniformity further reduces manufacturing costs.

[0026] Furthermore, it is preferred that the connecting element is clamped relative to the connecting structure by means of a wedge-shaped clamping element that is movable relative to the connecting structure. This secures the bearing gap setting particularly reliably against adjustment during operation of the sliding bearing. This offers the advantage of improved precise positioning of the sliding element on an inclined plane and reliable fixation of this sliding element during operation of the sliding bearing.

[0027] For this design, it is essential that the clamping element ensures sufficient, ideally full-surface, force transmission. To achieve this, the clamping element is wedge-shaped and fills the gap resulting from the ramped height adjustment as effectively as possible, i.e., almost completely. In contrast, a distinction must be made between holding mechanisms that only maintain the position of the connecting element at specific points or in certain areas, such as spindle-shaped or helical mechanisms.

[0028] According to an advantageous embodiment of the invention, the connecting structure can have an opening on two sides that tapers obliquely towards the sliding element, into which the at least first connecting element is inserted, and the connecting element has oblique sections on its end faces. The oblique sections are designed such that one end of the connecting element engages in a corresponding oblique guide section of the connecting structure, and the other end is held indirectly in the oblique guide section via the wedge-shaped clamping element. Thus, the connecting element is held in the oblique guide section of P240946

[0029] - 6 -

[0030] The connection structure and, on the other side, the wedge-shaped clamping element in the inclined guide section of the connection structure are held securely in the radial direction r.

[0031] The aforementioned connection can also be understood as a type of dovetail joint. The advantage of this design is that the connecting element can be ideally clamped in this way and is also adjustable in an overhead situation without the risk of it falling radially inwards.

[0032] According to a further preferred embodiment of the invention, the at least first sliding element can also be repositioned relative to the connecting structure by means of an adjusting screw. This allows for a particularly easy-to-assemble and precisely adjustable bearing clearance setting. Preferably, the adjusting screw engages directly in a bore with a corresponding internal thread provided in the connecting element. The adjusting screw can preferably be headless, i.e., consist solely of a threaded rod. In the context of the invention, the term "adjusting screw" thus also refers to a threaded rod with a nut, which serves to adjust the bearing clearance. However, it can also have a screw head.

[0033] Furthermore, according to another advantageous embodiment of the invention, the wedge-shaped clamping element can be repositioned relative to the connecting structure by means of a clamping screw. This clamping screw serves to ideally clamp the clamping element and to hold it in its position. Thus, a consistently high clamping force acting on the connecting element is generated and ensured.

[0034] Furthermore, it is preferred that the sliding element is secured to the connecting element by means of a positive locking connection. The securing need not be directly achieved by the connecting element, but can also advantageously be achieved indirectly via the connection structure. This connection should not impede the mobility of the spherical connection P240946.

[0035] - 7 - impair, but merely ideally prevent the sliding element from falling in an overhead situation.

[0036] It is also possible for the positive locking connection to be achieved using a fastener and a connecting part that is attached to the connection structure. This enables an ideal, flexible connection between the sliding element and the connection structure.

[0037] The advantage of the aforementioned designs lies in the fact that the sliding bearing is secured against falling apart and can therefore be ideally installed in an overhead situation without the risk of it falling radially inwards. Ideally, the connecting part can be made using a sheet metal or spring-loaded sheet metal. This has the advantage that it does not need to be disassembled, while still ensuring the sliding element's mobility within the spherical connection.

[0038] It can also be advantageous to further develop the invention such that the connection structure has a hydraulic channel, capable of carrying a hydraulic fluid, which surrounds the connecting element and is connected to a surface of the sliding element that is complementary to the sliding surface. For the purposes of this invention, a hydraulic channel is understood to be any line, hose, pipe, or similar component through which fluids can be conveyed. The advantage that can be achieved in this way is that the hydraulic channel can be separated from the connecting element and is also flexible in order to prevent damage that could result from the movement of the sliding element.

[0039] The object of the invention is further achieved by a method for adjusting a bearing clearance on a hydrodynamic or hydrostatic sliding bearing, comprising the following steps:

[0040] Provision of at least one first sliding element with a first sliding surface, wherein the sliding element has a spherical surface on the opposite side of the first sliding surface and a P240946

[0041] - 8 -

[0042] Connecting element, wherein the connecting element has a spherical surface corresponding to the spherical surface of the sliding element in order to arrange the sliding element movably on the connecting element, and with inclined sections which are formed at two ends, i.e. end faces,

[0043] • Provision of a connection structure for receiving the connecting element and the sliding element, wherein the connection structure has an opening on two sides that slopes obliquely towards the sliding element, into which the connecting element, which has oblique sections on its end faces, can be inserted. The oblique sections of the connecting element must be designed such that one end of the connecting element engages in a corresponding oblique guide section of the connection structure and the other end can be held indirectly in the oblique guide section via the wedge-shaped clamping element, so that the connecting element can be held securely in the oblique guide section and, by means of the wedge-shaped clamping element, in the other oblique guide section of the connection structure in the radial direction r.

[0044] • Provision of at least one wedge-shaped clamping element that can be moved relative to the connection structure and used on the inclined section,

[0045] • Placing the sliding element with its spherical surface onto the corresponding spherical surface of the connecting element

[0046] • Optional application of the positive locking connection to secure the subsequent sliding element,

[0047] Inserting the wedge-shaped clamping element into the opening, P240946

[0048] - 9 -

[0049] Inserting the connecting element with the sliding element into the opening of the connection structure,

[0050] • Adjusting the bearing play by offsetting at least the first connecting element in the opening,

[0051] • Fixing the connecting element in the set bearing clearance position by moving the wedge-shaped clamping element in the opening relative to the connection structure, so that the connecting element is held under tension relative to the connection structure,

[0052] • Optionally, attach the positive locking connection to secure the sliding element if this has not already been done in a previous step.

[0053] The invention will now be explained in more detail with reference to figures, without limiting the general concept of the invention.

[0054] It shows:

[0055] Figure 1 shows a plain bearing in a perspective view.

[0056] Figure 2 Detail view of a first side of a plain bearing in a perspective view,

[0057] Figure 3 Detail view of a second side of a sliding bearing in a perspective view

[0058] Figure 4 shows an axial sectional view through a sliding bearing with a view from a first side.

[0059] Figure 5 shows a tangential section view through a sliding bearing in the area of ​​the adjusting screw of the connecting element, P240946

[0060] - 10 -

[0061] Figure 6 shows a second tangential section view through a sliding bearing, in the area of ​​the clamping screw of the wedge-shaped connecting element,

[0062] Figure 7 shows a cross-sectional view through a sliding bearing.

[0063] Figure 8 shows a wind turbine with a sliding bearing in a schematic representation.

[0064] Figure 1 shows a hydrodynamic or hydrostatic sliding bearing 1 for the rotatable mounting of a shaft 3 (not shown in detail), in particular for a wind turbine 2, as also shown by way of example in Figure 8. Such a wind turbine 2 typically has an electric machine 41 driven by a shaft 3 via a gear arrangement 40. In such a wind turbine 2, the shaft 3 can be rotatably mounted on a sliding bearing 1, as will be explained in more detail below.

[0065] The plain bearing 1 has a plurality of essentially identical sliding elements 4, each with a connecting element 44, which can be arranged equidistantly distributed around the circumference of the connection structure 6, which is designed as a bearing ring. To avoid repetition, the function is explained below using the example of only one sliding element 4 with its connecting element 44 and a section of a connection structure 6. It is understood that a plurality of the sliding elements 4 in the plain bearing 1, preferably all sliding elements 4, are constructed and function as described below using one sliding element 4 as an example.

[0066] Figure 2 shows a perspective view of a sliding element 4 with a first sliding surface 5, which is arranged to be radially and axially displaceable on a connecting structure 6. The bearing is designed as a radial bearing. The connecting element 44 can be displaced relative to the connecting structure 6 by means of an adjusting screw 15, in this case a threaded rod with an adjusting nut 22. Figure 2 also shows that the wedge-shaped clamping element 9 can be clamped relative to the connecting structure 6 by means of a clamping screw 16. P240946

[0067] - 11 -

[0068] The clamping screw 16 thus clamps the wedge-shaped clamping element 9, which can be seen in Figure 3, after the bearing play has been correctly adjusted via the adjusting screw 15.

[0069] The connection structure 6 has a hydraulic channel 23, which can be pressurized with hydraulic fluid, that leads around the connecting element 44 and is connected to a surface of the sliding element that is complementary to the sliding surface. This means that the hydraulic channel 23, for example in the form of a pipe, hose or line, is connected to the connection structure 6.

[0070] A cover plate 21 is fixed to the connection structure 6 and is penetrated by the adjusting screw 15 and the clamping screw 16. The cover plate 21 is in turn screwed to the connection structure 6 by means of the fastening screws 25.

[0071] The advantage of the cover plate 21 is that the wedge-shaped clamping element 9 and the connecting element 44 can first be inserted axially into the opening 10 of the connection structure 6, as shown in Figure 3. The lateral area of ​​the opening 10 can then subsequently be closed on this side by the cover plate 21, and the bearing clearance can be adjusted and fixed.

[0072] The adjusting screw 15 can be locked against the cover plate 21 by means of an adjusting nut 22 once the final fixing has been carried out via the wedge-shaped clamping element 9 in order to secure a bearing play adjustment that has been carried out.

[0073] Figure 3 illustrates that the connecting element 44 is clamped relative to the connecting structure 6 by means of at least one wedge-shaped clamping element 9 which is movable relative to the connecting structure 6. The sliding element 4 is secured to the connecting element 44 by means of a positive locking connection 47. This connection is realized by means of a connecting element 48 and a connecting part 49, which is attached to the connecting structure.

[0074] Figure 4 shows an axial sectional view through a sliding bearing 1. The sliding element 4 has a spherical surface 45 on the opposite side of the first sliding surface 5. The connecting element 44 has a corresponding spherical surface 46 to movably mount the sliding element 4 on the connecting element 44. The connection structure 6 has a slope on two sides inclined towards the P240946

[0075] - 12 -

[0076] The sliding element 4 has an opening 10 into which the at least first connecting element 44 is inserted. The connecting element 44 has inclined sections 11a and 11b on its end faces, wherein the inclined sections 11a and 11b are designed such that one end 13a of the connecting element 44 engages in a corresponding inclined guide section 14 of the connecting structure 6 and the other end 13b is held in the inclined guide section 14 indirectly via the wedge-shaped clamping element 9. This secures the connecting element 44 in the inclined section 11a and, by means of the wedge-shaped clamping element 9, in the inclined guide section 14 of the connecting structure in a radial direction r.

[0077] Figure 5 shows a tangential sectional view through the sliding bearing 1 at the level of the adjusting screw 15 of the connecting element 44, illustrating the ramp section 7 of the connecting element 44 and the corresponding second ramp section 8 of the connecting structure 6. The ramp sections are designed such that an axial offset of the connecting element 44 relative to the connecting structure 6 causes a radial offset of the connecting element 44 and / or vice versa. This allows the bearing clearance of the sliding element 4 relative to the shaft 3 to be adjusted. The slope of the axially extending ramp sections 7 and 8 runs in the radial direction.

[0078] Figure 6 shows a second tangential section view through a sliding bearing, in the area of ​​the clamping screw 16 of the wedge-shaped connecting element. Here, too, the axially extending ramp sections 7 and 8 are clearly visible.

[0079] Figure 7 shows a cross-sectional view through a sliding bearing in section through the connection structure 6, the connecting element 44, and the wedge-shaped clamping element 9. It can be seen that the connecting element 44 can be repositioned relative to the connection structure 6 by means of an adjusting screw 15. For this purpose, the adjusting screw 15 engages in a corresponding bore 35 of the connecting element 44, and by turning the nut or the screw itself, an axial offset is caused along the ramp sections 7, 8, so that the connecting element 44 can also be adjusted according to the slope of the ramp.

[0080] - 13 -

[0081] Ramp sections 7 and 8 are offset radially.

[0082] A procedure for adjusting the bearing clearance on the hydrodynamic or hydrostatic sliding bearing 1 may now include the following steps:

[0083] First, at least one first sliding element 4 with a first sliding surface 5 is provided, wherein the sliding element 4 has a spherical surface 45 on the opposite side of the first sliding surface 5, and a connecting element 44, wherein the connecting element 44 has a spherical surface 46 corresponding to the spherical surface 45 of the sliding element 4, in order to arrange the sliding element 4 movably on the connecting element 44, and with inclined sections 11 a, 11 b, which are formed at two ends 13a, 13b.

[0084] Furthermore, a connection structure 6 is provided for receiving the connecting element 44 and the sliding element 4, wherein the connection structure 6 has an opening 10 on two sides that slopes obliquely towards the sliding element 4, into which the connecting element 44, which has oblique sections 11 a, 11 b on its end faces, can be inserted. The inclined sections 11 a and 11 b of the connecting element 44 must be designed such that one end 13a of the connecting element 44 engages in a corresponding inclined guide section 14 of the connection structure 6 and the other end 13b can be held indirectly in the inclined guide section 14 via the wedge-shaped clamping element 9, so that the connecting element 44 can be held securely in the inclined guide sections 14 and, by means of the wedge-shaped clamping element 9, in the other inclined guide section 14 of the connection structure in the radial direction r.

[0085] The provision also includes at least one wedge-shaped clamping element 9 that can be moved relative to the connection structure 6 and inserted on the inclined section 11 b.

[0086] First, the sliding element 4 with its spherical surface 45 is placed onto the corresponding spherical surface 46 of the connecting element 44. P240946

[0087] - 14 -

[0088] The wedge-shaped clamping element 9 and subsequently the connecting element 44 with the sliding element 4 are then inserted into the opening 10 of the connection structure 6. The side can then be closed with the cover plate 21. The bearing clearance is then adjusted by offsetting at least the first connecting element 44 in the opening 10. For this purpose, the adjusting screw 15 or the attached nut 22 can be turned.

[0089] Once the bearing clearance is correctly adjusted, the clamping element 9 is tightened by a clamping screw 16. This clamping screw 16 is, of course, still loose when the bearing clearance is adjusted via the adjusting screw 15, so that the clamping element 9 does not obstruct the adjustment. By moving the wedge-shaped clamping element 9 in the opening 10 relative to the connecting structure 6, the connecting element 44 is finally fixed in the set bearing clearance position, thus holding the connecting element 44 clamped relative to the connecting structure 6. After the connecting element 44 has been clamped by the wedge-shaped clamping element 9, the position of the nut of the adjusting screw 15, and thus also of the connecting element 44, relative to the connecting structure 6 is fixed by tightening the adjusting nut 22.

[0090] The invention is not limited to the embodiments illustrated in the figures. The foregoing description is therefore not to be considered limiting, but rather explanatory. The following claims are to be understood as meaning that a named feature is present in at least one embodiment of the invention. This does not preclude the presence of further features. Insofar as the claims and the foregoing description define 'first' and 'second' features, this designation serves to distinguish between two similar features without establishing any hierarchy. P240946

[0091] - 15 -

[0092] List of reference signs

[0093] 1 plain bearing

[0094] 2 wind turbines

[0095] 3rd wave

[0096] 4 sliding element

[0097] 5 sliding surface

[0098] 6 Connection structure / bearing ring

[0099] 7 Ramp section

[0100] 8 Ramp section

[0101] 9 wedge-shaped clamping element

[0102] 10 Opening

[0103] 11 a inclined section of the connecting element 44

[0104] 11 b inclined section of the connecting element 44

[0105] 12 -

[0106] 13a End of the connecting element 44

[0107] 13b End of the connecting element 44

[0108] 14 inclined guide section

[0109] 15 Adjustment screw

[0110] 16 clamping screw

[0111] 17...20: -

[0112] 21 Cover plate

[0113] 22 Adjusting nut

[0114] 23 Hydraulic channel

[0115] 24 -

[0116] 25 fastening screws

[0117] 26...43: -

[0118] 44 Connecting element

[0119] 45 spherical surface of the sliding element 4

[0120] 46 spherical surface of the connecting element 44

[0121] 47 Positive locking connection

[0122] 48 Fasteners

[0123] 49 Connecting part

Claims

P240946 - 16 - Claims 1. Hydrodynamic or hydrostatic sliding bearing (1) for rotatably supporting a shaft (3), in particular in a wind turbine (2), comprising a connection structure (6), at least one first sliding element (4) with a first sliding surface (5), which is arranged radially and / or axially displaceable on the connection structure (6) via at least one connecting element (44), characterized in that the bearing is designed as an axial or radial bearing and a first ramp section (7) is formed on the connecting element (44) and a corresponding second ramp section (8) is formed on the connecting element (44) such that an axial displacement of the connecting element (44) relative to the connecting structure (6) causes a radial displacement of the connecting element (44) and / or vice versa.so that the bearing clearance of the sliding element (4) relative to the shaft (3) is adjustable, wherein the sliding element (4) has a spherical surface (45) on the opposite side of the first sliding surface (5), and wherein the connecting element (44) has a corresponding spherical surface (46) in order to movably arrange the sliding element (4) on the connecting element (44).

2. Sliding bearing (1 ) according to claim 1 , characterized in that the connecting element (44) is clamped relative to the connecting structure (6) by means of a wedge-shaped clamping element (9) which is movable relative to the connecting structure (6).

3. Sliding bearing (1) according to claim 2, characterized in that the connecting structure (6) has an opening (10) on two sides which tapers obliquely towards the sliding element (4), into which the connecting element (44) is inserted and the connecting element (44) is attached. P240946 - 17 - has inclined sections (11a, 11b) on the end faces, wherein the inclined sections (11a, 11b) are designed such that one end (13a) of the connecting element (44) engages in a corresponding inclined guide section (14) of the connecting structure (6) and the other end (13b) is held indirectly in the inclined guide section (14) via the wedge-shaped clamping element (9), so that the at least one connecting element (44) is held securely in the inclined section (11a) and in the inclined guide section (14) of the connecting structure in the radial direction r by means of the wedge-shaped clamping element (9).

4. Sliding bearing (1 ) according to one of the preceding claims, characterized in that the connecting element (44) can be moved relative to the connecting structure (6) by means of an adjusting screw (15).

5. Plain bearing (1 ) according to one of claims 2-4, characterized in that the wedge-shaped clamping element (9) is clamped relative to the connecting structure (6) by means of a clamping screw (16).

6. Sliding bearing (1 ) according to one of the preceding claims, characterized in that the sliding element (4) is secured to the connecting element (44) by means of a positive locking connection (47).

7. Plain bearing (1 ) according to claim 6, characterized in that the positive locking connection (47) is realized by means of a connecting means (48) and a connecting part (49) which is attached to the connecting structure (6).

8. Plain bearing (1) according to one of the preceding claims, characterized in that the connection structure (6) has a hydraulic channel (23) which can be pressurized with a hydraulic fluid (24) and which is surrounded by the P240946 - 18 - connecting element (44) leads around and is connected to a surface of the sliding element that is complementary to the sliding surface.

9. Method for adjusting a bearing clearance on a hydrodynamic or hydrostatic sliding bearing (1) comprising the following steps: • Provision of at least one first sliding element (4) with a first sliding surface (5), wherein the sliding element (4) has a spherical surface (45) on the opposite side of the first sliding surface (5) and a connecting element (44), wherein the connecting element (44) has a spherical surface (46) corresponding to the spherical surface (45) of the at least first sliding element (4) in order to movably arrange the sliding element (4) on the connecting element (44) and with inclined sections (11a, 11b) which are formed at two ends (13a, 13b), • Provision of a connection structure (6) for receiving the connecting element (44) and the sliding element (4), wherein the connection structure (6) has an opening (10) on two sides which slopes obliquely towards the sliding element (4) into which the connecting element (44), which has oblique sections (11a, 11b) on its end faces, can be inserted.The inclined sections (11a, 11b) of the connecting element (44) must be designed such that one end (13a) of the connecting element (44) engages in a corresponding inclined guide section (14) of the connecting structure (6) and the other end (13b) can be held indirectly in the inclined guide section (14) via the wedge-shaped clamping element (9), so that the connecting element (44) can be held securely in the inclined guide section (14) and in the other inclined guide section (14) of the connecting structure by means of the wedge-shaped clamping element (9) in the radial direction r. P240946 - 19 - Provision of a wedge-shaped clamping element (9) that can be moved relative to the connection structure (6) and inserted on the inclined section (11b), • Optionally, attach the positive locking connection (47) to secure the subsequent sliding element, • Placing the sliding element (4) with its spherical surface (45) onto the corresponding spherical surface (46) of the connecting element (44) • Inserting the wedge-shaped clamping element (9) into the opening (10), • Inserting the connecting element (44) with the sliding element (4) into the opening (10) of the connecting structure (6), • Adjusting the bearing play by offsetting the connecting element (44) in the opening (10) • Fixing the connecting element (44) in the set bearing clearance position by moving the wedge-shaped clamping element (9) in the opening (10) relative to the connecting structure (6), so that the connecting element (44) is held clamped relative to the connecting structure (6). • Optionally, attach the positive locking connection (47) to secure the sliding element, if this has not already been done in a previous step.

10. Wind turbine (2) comprising a hydrodynamic or hydrostatic sliding bearing (1 ) according to one of claims 1-8 for rotatable support of a shaft (3).

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