Tilt pad device and thrust bearing

Abstract

The invention discloses a tilting pad device and a thrust bearing. The tilting pad device is provided with a pad seat, an elastic protective sleeve, a rigid ball head and a rigid pad. The tilting pad device is fixed to a support ring through the rigid pad. The pad seat is provided with a wear-resistant surface, which can cooperate with a thrust plate to form a friction pair with the thrust plate. The rigid ball head is connected to the pad seat and is arranged on the inner side of the elastic protective sleeve. Under the action of external thrust, the tilting pad device can be tilted through the friction pair formed by the rigid ball head and the rigid pad, thereby increasing the load capacity of the tilting pad device. One end of the elastic protective sleeve is sealed and attached to the side of the pad seat opposite to the wear-resistant surface, and the rigid pad is sealed and attached to the other end of the elastic protective sleeve, so that the inner side of the elastic protective sleeve forms a closed cavity structure, thereby blocking external impurities such as lubricating water, mud and sand, avoiding erosion of the rigid ball head by the lubricating water and mud and thus improving the service life of the rigid ball head.

Description

Technical Field

[0001] The present invention relates to the technical field of bearings, and in particular to a tilting pad device and a thrust bearing. Background Art

[0002] In the practical application of water-lubricated thrust bearings, the necessity of wear protection of rigid ball heads cannot be ignored. Water-lubricated thrust bearings use water as a lubricating medium. During operation, the bearings will suffer varying degrees of wear, especially at the rigid ball head, and its protection is crucial.

[0003] Currently, the patents related to water-lubricated thrust bearings using rigid ball heads include documents such as a diamond sliding thrust bearing with publication number CN203835953U, an ultra-heavy-load water-lubricated sliding thrust bearing and its manufacturing method with publication number CN112727919A, a heavy-load point-supported elastic tilting pad water-lubricated sliding thrust bearing with publication number CN113494523B, and a water-lubricated thrust bearing and performance testing method with publication number CN118257787A.

[0004] However, the rigid ball heads in the above water-lubricated thrust bearings are all exposed to the lubricating water, and cannot effectively prevent the impact of impurities and sediment on the ball heads, which can easily lead to the erosion of the ball heads by various impurities and chemicals in the water, causing the ball heads to wear and fail. In addition, it is difficult to lubricate the ball heads and the support rings below, resulting in the life and wear of the rigid ball heads failing to achieve the expected results. Summary of the invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and to propose a tilting pad device and a thrust bearing to solve the technical problem in the prior art that the rigid ball head of the water-lubricated thrust bearing is easily corroded, resulting in a reduced service life of the rigid ball head.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a tilting pad device, comprising:

[0008] The tile seat is provided with a wear-resistant surface;

[0009] An elastic protective sleeve, one end of which is sealingly attached to a side of the tile seat opposite to the wear-resistant surface;

[0010] A rigid ball head, disposed on the inner side of the elastic protective sleeve and connected to the tile seat; and

[0011] The rigid tile is sealed and attached to the other end of the elastic protective sleeve and is used for being fixedly connected to the support ring.

[0012] In some embodiments, a first sealing ring is provided at one end of the elastic protective sleeve close to the tile seat, and the first sealing ring is sealingly fitted with the tile seat.

[0013] In some embodiments, the tilting pad device further comprises a first pressure ring, wherein the first pressure ring is attached to a side of the first sealing ring opposite to the pad seat and is fastened to the pad seat by bolts.

[0014] In some embodiments, a connecting seat is provided on the side of the tile seat opposite to the wear-resistant surface, the connecting seat is detachably fixed to the tile seat, and the rigid ball head is integrally formed with the connecting seat.

[0015] In some embodiments, a second sealing ring is provided at one end of the elastic protective sleeve close to the rigid tile, and the second sealing ring is sealingly fitted with the rigid tile.

[0016] In some embodiments, the tilting pad device further comprises a second pressure ring, wherein the second pressure ring is attached to a side of the second sealing ring opposite to the rigid pad and is fastened to the rigid pad by bolts.

[0017] In some embodiments, a surface of the elastic protective sleeve is provided with a plurality of spacer rings evenly spaced in the axial direction.

[0018] In some embodiments, an arc-shaped groove is provided on a surface of the rigid tile close to the rigid ball head, and the arc-shaped groove is opposite to the rigid ball head.

[0019] In some embodiments, an oil film gap is formed between the rigid ball head and the arc-shaped groove.

[0020] In a second aspect, the present invention further provides a thrust bearing, comprising a support ring, a thrust plate and a plurality of the above-mentioned tilting pad devices, wherein each of the tilting pad devices is fixed to the support ring at intervals along the circumferential direction of the support ring, and the thrust plate forms a friction pair with the wear-resistant surface.

[0021] Compared with the prior art, the tilting pad device provided by the present invention is provided with a pad seat, an elastic protective sleeve, a rigid ball head and a rigid pad. The tilting pad device is fixed to the support ring through the rigid pad. The pad seat is provided with a wear-resistant surface, which can cooperate with the thrust plate to form a friction pair with the thrust plate to provide the thrust plate with rotation. The rigid ball head is connected to the pad seat and is provided on the inner side of the elastic protective sleeve. Since the elastic protective sleeve has a certain elastic property, the tilting pad device can be tilted by the friction pair formed by the rigid ball head and the rigid pad under the action of external thrust, thereby achieving And increase the load capacity of the tilting pad device; one end of the elastic protective sleeve is sealed and fitted to the side of the wear-resistant surface opposite to the tile seat, and the rigid tile block is sealed and fitted to the other end of the elastic protective sleeve, so that the inner side of the elastic protective sleeve forms a closed cavity structure, which can block external lubricating water, mud and other impurities; the rigid ball head is arranged on the inner side of the elastic protective sleeve, which can support the inclination angle of the tile seat while avoiding contact between the rigid ball head and external lubricating water, mud and other impurities, which may cause erosion to the rigid ball head, thereby increasing the service life of the rigid ball head. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a tilting pad device provided by an embodiment of the present invention;

[0023] Figure 2 is a front view of a tilting pad device provided by an embodiment of the present invention;

[0024] Figure 3 is along Figure 2 Sectional view along line AA;

[0025] Figure 4 It is a schematic diagram of the structure of the hidden tile seat and the rigid tile block of the tilting pad device provided in an embodiment of the present invention;

[0026] Figure 5 It is a structural schematic diagram of a thrust bearing hiding a thrust plate provided in an embodiment of the present invention.

[0027] Reference numerals in the figures:

[0028] 10 - tile seat 11 - wear-resistant surface 12 - substrate layer

[0029] 13—Wall surface wear-resistant layer 14—Connection seat 20—Elastic protective sleeve

[0030] 21 - spacer ring 22 - first sealing ring 23 - second sealing ring

[0031] 30 - Rigid ball head 31 - Oil film clearance 40 - Rigid tile

[0032] 41—arc groove 50—first pressure ring 60—second pressure ring

[0033] 70—Support ring. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] In order to solve the technical problem in the prior art that the rigid ball head of the water-lubricated thrust bearing is easily corroded, resulting in a reduced service life of the rigid ball head, an embodiment of the present invention provides a tilting pad device, which is mainly arranged between the support ring and the thrust plate. The tilting pad device can be tilted under the unbalanced thrust of the thrust plate, and can also block impurities such as lubricating water and mud to prevent the rigid ball head from contacting the lubricating water, mud and sand and other impurities, thereby protecting the rigid ball head and preventing erosion of the rigid ball head.

[0036] The tilting pad device provided by the embodiment of the present invention is as follows: Figure 1-5 As shown, it includes a tile seat 10, an elastic protective sleeve 20, a rigid ball head 30 and a rigid tile block 40. The tile seat 10 is provided with a wear-resistant surface 11; one end of the elastic protective sleeve 20 is sealed and fitted on the side of the tile seat 10 opposite to the wear-resistant surface 11; the rigid ball head 30 is arranged on the inner side of the elastic protective sleeve 20 and connected to the tile seat 10; the rigid tile block 40 is sealed and fitted on the other end of the elastic protective sleeve 20, and is used to be fixedly connected to the support ring 70.

[0037] Specifically, the tilting pad device is provided with a pad seat 10, an elastic protective sleeve 20, a rigid ball head 30 and a rigid pad 40. The tilting pad device is fixed to the support ring 70 through the rigid pad 40. The pad seat 10 is provided with a wear-resistant surface 11, and the wear-resistant surface 11 can cooperate with the thrust plate to form a friction pair with the thrust plate to allow the thrust plate to rotate. The rigid ball head 30 is connected to the pad seat 10 and is provided on the inner side of the elastic protective sleeve 20. Since the elastic protective sleeve 20 has a certain elastic property, when the tilting pad device is subjected to the unbalanced thrust of the thrust plate, it can drive the elastic protective sleeve 20 to deform, so that the pad seat 10 is tilted, and the rigid ball head 30 forms a friction pair with the rigid pad 40. The friction pair provides support for the inclination of the tile seat 10, thereby increasing the load capacity of the tilting tile device; one end of the elastic protective sleeve 20 is sealed and fitted to the side of the wear-resistant surface 11 of the tile seat 10, and the rigid tile block 40 is sealed and fitted to the other end of the elastic protective sleeve 20, so that the inner side of the elastic protective sleeve 20 forms a closed cavity structure, thereby blocking external lubricating water, mud and other impurities; the rigid ball head 30 is arranged on the inner side of the elastic protective sleeve 20, which can support the inclination angle of the tile seat 10 while avoiding the rigid ball head 30 from contacting with external lubricating water, mud and other impurities, causing erosion to the rigid ball head 30, thereby increasing the service life of the rigid ball head 30.

[0038] In one embodiment, Figure 1-3 As shown in Figure 5, a substrate layer 12 and a tile surface wear-resistant layer 13 are provided on the upper side of the tile seat 10. The substrate layer 12 is fixed to the base, the tile surface wear-resistant layer 13 is fixed to the substrate layer 12, and the wear-resistant surface 11 is formed on the upper surface of the tile surface wear-resistant layer 13. The substrate layer 12 can provide support for the wear-resistant layer.

[0039] It can be understood that the elastic protective sleeve 20 can be made of any elastic material such as elastic fiber, elastic plastic, etc.

[0040] In one embodiment, the elastic protective sleeve 20 is a rubber sleeve made of rubber material.

[0041] In this embodiment, Figure 1-5 As shown, a plurality of spacer rings 21 evenly spaced in the axial direction are arranged on the surface of the elastic protective sleeve 20. Specifically, the spacer rings 21 can strengthen the structure of the elastic protective sleeve 20, prevent the elastic protective sleeve 20 from cracking, and make the elastic protective sleeve 20 form a corrugated structure similar to a bellows, thereby ensuring that the elastic protective sleeve 20 has good elastic properties.

[0042] In one embodiment, in order to strengthen the sealing between the elastic protective sleeve 20 and the tile seat 10, a first sealing ring 22 is provided at one end of the elastic protective sleeve 20 close to the tile seat 10, and the first sealing ring 22 is sealed and fitted with the tile seat 10. Specifically, the gap between the elastic protective sleeve 20 and the tile seat 10 can be eliminated by the fitting of the first sealing ring 22 and the tile seat 10, thereby providing a good seal for the elastic protective sleeve 20 and effectively blocking external impurities such as lubricating water and dust.

[0043] In one embodiment, Figure 1-5 As shown, the tilting pad device further includes a first pressure ring 50, which is attached to the side of the first sealing ring 22 opposite to the pad seat 10 and is fastened to the pad seat 10 by bolts. Specifically, the first pressure ring 50 can provide pressure on the circumferential direction of the first sealing ring 22 by tightening the bolts, and the annular pressure provided by the first pressure ring 50 ensures that the first sealing ring 22 can be tightly attached to the pad seat 10.

[0044] In this embodiment, the first pressure ring 50 is connected to the tile seat 10 by a combination of 12 bolts and nuts that are evenly spaced.

[0045] In one embodiment, Figure 1-4 As shown, a connecting seat 14 is provided on one side of the tile seat 10 opposite to the wear-resistant surface 11 . The connecting seat 14 is detachably fixed to the tile seat 10 , and the rigid ball head 30 is integrally formed on the connecting seat 14 .

[0046] Specifically, the connection seat 14 can be sealed and connected to the elastic protective sleeve 20, and fixed to the rigid ball head 30. The integral molding of the rigid ball head 30 and the connection seat 14 has the following effects:

[0047] First, the rigid ball head 30 and the connecting seat 14 can be fixed, which simplifies the connection structure between the rigid ball head 30 and the connecting seat 14;

[0048] Secondly, it ensures that there is no relative displacement between the rigid ball head 30 and the connecting seat 14, thereby enhancing the overall stability, especially at high speeds and extreme conditions;

[0049] Thirdly, the matching accuracy of the rigid ball head 30 and the connecting seat 14 is ensured during the production process, eliminating the step of fine adjustment on site, reducing the difficulty of processing and assembly, and improving assembly efficiency;

[0050] Fourthly, since the rigid ball head 30 is tightly connected to the connecting seat 14, the vibration transmission is reduced, the system runs more smoothly, and the wear caused by vibration is reduced;

[0051] Fifth, it helps to form a more stable oil wedge shape, improve the oil film stiffness, and thus improve the bearing capacity of the bearing. Moreover, since there is no swing between the rigid ball head 30 and the connecting seat 14, the integrated design of the rigid ball head 30 and the connecting seat 14 can better withstand high loads and reduce the risk of oil film rupture.

[0052] Sixth, since there is no obvious relative movement between parts, the chance of wear is reduced, the service life of the overall bearing is extended, and the number of replaceable parts is reduced, thereby reducing the complexity and cost of long-term maintenance;

[0053] Seventh, the rigid ball head 30 and the connection seat 14 have the same thermal expansion coefficient, which reduces the inconsistency of dimensional changes caused by temperature differences, reduces the risk of thermal deformation, and helps to maintain a stable operating temperature range for the entire system to avoid overheating or uneven temperature distribution;

[0054] Eighth, it can quickly adapt to load changes: the integrated design of the rigid ball head 30 and the connecting seat 14 may lack flexibility in some cases, but in certain applications, it can still automatically adjust the position of the connecting seat 14 when the load changes, maintain the stability of the oil film, and enable the bearing to maintain stable operation under various working conditions, especially under start-stop, variable load or variable speed conditions;

[0055] Ninth, it simplifies the production process and reduces the number of parts, thereby reducing manufacturing costs. As the number of parts is reduced, the frequency and cost of maintenance and replacement are also reduced, which is especially important for equipment with long-term operation.

[0056] In this embodiment, the connecting seat 14 is detachably fixed to the tile seat 10 by bolts.

[0057] In this embodiment, Figure 3 As shown, a limiting installation groove is provided on one side of the tile seat 10 opposite to the wear-resistant surface 11, and the connecting seat 14 is installed in the limiting installation groove. The limiting installation groove can prevent the connecting seat 14 from shifting, so that the tile seat 10 and the connecting seat 14 form a whole.

[0058] In one embodiment, Figure 1-5 As shown, a second sealing ring 23 is provided at one end of the elastic protective sleeve 20 close to the rigid tile 40, and the second sealing ring 23 is sealed and fitted with the rigid tile 40. Specifically, the gap between the elastic protective sleeve 20 and the rigid tile 40 can be eliminated by fitting the second sealing ring 23 with the rigid tile 40, thereby providing a good seal for the elastic protective sleeve 20 and effectively blocking external impurities such as lubricating water and dust.

[0059] In one embodiment, Figure 1-5 As shown, the tilting pad device further includes a second pressure ring 60, which is attached to the side of the second sealing ring 23 opposite to the rigid pad 40 and is fastened to the rigid pad 40 by bolts. Specifically, the second pressure ring 60 can provide pressure on the circumferential direction of the second sealing ring 23 by locking the bolts, and the annular pressure provided by the second pressure ring 60 ensures that the second sealing ring 23 can be tightly attached to the pad seat 10.

[0060] In this embodiment, the second compression ring 60 is connected to the rigid tile 40 by a combination of 12 bolts and nuts that are evenly spaced.

[0061] In one embodiment, Figure 3 and 5 As shown, a side of the rigid tile 40 close to the rigid ball head 30 is provided with an arc-shaped groove 41 , and the arc-shaped groove 41 is opposite to the rigid ball head 30 .

[0062] Specifically, the rigid tile 40 can achieve the following effects by providing an arc-shaped structure with an arc-shaped groove 41:

[0063] First, improve the carrying capacity

[0064] Increase oil wedge stability: The arc-shaped groove 41 can maintain the stability of the oil film and avoid the oil film from rupturing during operation, thereby maintaining continuous fluid dynamic lubrication.

[0065] Optimized oil wedge shape: The arc-shaped groove 41 design helps to form a more perfect oil wedge shape, so that the oil film can bear the load more effectively and improve the overall load-bearing capacity.

[0066] Second, reduce friction and wear

[0067] Reduce metal-to-metal friction: Since the arc-shaped groove 41 can better maintain the oil film thickness, the direct contact between metal parts is reduced, thereby significantly reducing friction and wear.

[0068] Extended component life: Reduced friction means that parts wear less quickly, extending the service life of the entire system.

[0069] Third, improve system stability

[0070] Automatically adjust the pad position: The pads in the tilting pad bearing can swing freely according to conditions such as load, speed and lubricant viscosity. The arc groove 41 enhances this adaptive ability and makes the system more stable.

[0071] Reduce vibration: The rigid pad 40 can swing freely around the fulcrum, thereby playing a vibration reduction role.

[0072] Fourth, improve operational efficiency

[0073] Reduced power consumption: The arc-shaped groove 41 reduces energy loss due to friction by maintaining effective oil film thickness, thereby improving mechanical efficiency.

[0074] Reduced temperature rise: Since less friction and wear generate less heat, the system will have a lower temperature rise, helping to maintain it within the optimal operating temperature range.

[0075] Fifth, enhance adaptive capabilities

[0076] Adaptability to different working conditions: The arc-shaped groove 41 enables the tilting pad bearing to automatically adjust to the optimal working state under various working conditions, for example, it can maintain stable operation under start-stop, variable load or variable speed conditions.

[0077] Flexible response to load changes: When the load changes, the rigid pad 40 can automatically tilt to adapt to the new working position to maintain the continuity and stability of the oil film.

[0078] Sixth, optimize lubrication performance and ensure uniform distribution of lubricating oil: the arc-shaped groove 41 helps to evenly distribute the lubricating oil in the contact area, avoids the situation of insufficient local oil supply, and ensures a good lubrication effect.

[0079] Improving oil film stiffness: The arc-shaped groove 41 is beneficial to improving the dynamic stiffness of the oil film, making the bearing more stable when running at high speed.

[0080] In one embodiment, Figure 3As shown, an oil film gap 31 is formed between the rigid ball head 30 and the arc-shaped groove 41. Specifically, the oil film gap 31 allows the rigid ball head 30 to move toward the rigid pad 40, so that when the pad seat 10 is pushed, the elastic protective sleeve 20 can have a certain travel space, thereby providing a certain buffer for the thrust received by the pad seat 10, improving the load capacity of the tilting pad device, facilitating the formation of the oil film, increasing the thickness of the oil film, and improving the service life of the rigid ball head 30.

[0081] In one of the embodiments, the rigid ball head 30 and the rigid tile 40 are opposite to each other to form a friction pair. The rigid ball head 30 and the rigid tile 40 are made of the same material to reduce the internal stress caused by the mismatch of thermal expansion coefficients between different materials, thereby reducing friction losses, reducing excessive wear caused by the difference in hardness of different materials, ensuring uniform distribution of load on the contact surface, and avoiding local overload caused by differences in material properties.

[0082] The embodiment of the present invention further provides a thrust bearing, such as Figure 5 As shown, the thrust bearing includes a support ring 70, a thrust plate and a plurality of the above-mentioned tilting pad devices, each of which is fixed to the support ring 70 at intervals along the circumferential direction of the support ring 70, and the thrust plate forms a friction pair with the wear-resistant surface 11. Specifically, the thrust bearing can ensure the stability of the thrust bearing force by arranging a plurality of tilting pad devices, and can protect the rigid ball head 30 from being corroded by impurities such as lubricating water and dust, thereby increasing the service life of the thrust bearing and reducing the use cost of the thrust bearing.

[0083] In this embodiment, a plurality of grooves are arranged at intervals in the circumferential direction of the support ring 70, and the rigid pads 40 of the tilting pad device are fixed to the grooves by screws, and the lower friction surface of the thrust plate and the friction surface of each tilting pad device form a friction pair. Under normal circumstances, the thrust plate is uniformly stressed on each tilting pad device. When the thrust at a certain point of the thrust plate is large, the tilting pad device at that point will be driven to tilt, thereby balancing the force on the thrust plate and ensuring the stable operation of the thrust bearing.

[0084] In this embodiment, the rigid pad 40 is fixed to the groove by screws, so that the rigid pad 40 can be removed and replaced independently without the need for overall disassembly, thereby simplifying the maintenance process of the bearing.

[0085] In order to better understand the present invention, the following Figures 1 to 5 The technical solution of the present invention is described in detail: the rigid pads 40 of each tilting pad device are circumferentially mounted on the grooves of the support ring 70 and are connected by limiting bolts to form a base part.

[0086] Then, the second sealing ring 23 at the lower part of the elastic protective sleeve 20 is fitted to the rigid tile 40, the second pressure ring 60 is fitted to the second sealing ring 23, and the second pressure ring 60 is connected to the rigid tile 40 by the limit bolts, and finally the lower part of the elastic protective sleeve 20 is installed, and the elastic protective sleeve 20 is used to provide protection for the rigid ball head 30. After the lower part of the elastic protective sleeve 20 is installed, a proper amount of lubricating oil can be filled into the elastic protective sleeve 20 from the upper opening of the elastic protective sleeve 20 to reduce the wear of the ball head, reduce the operating temperature, and improve the load capacity of the ball head.

[0087] Then, the integrated device formed by the connecting seat 14 and the rigid ball head 30 is installed in the limiting installation groove at the bottom of the tilting pad by means of limiting bolts; the first sealing ring 22 of the elastic protective sleeve 20 is fitted to the connecting seat 14, the first pressure ring 50 is fitted to the first sealing ring 22 of the elastic protective sleeve 20, and the upper part of the elastic protective sleeve 20 is fixed by means of bolts, and the installation of the upper part of the elastic protective sleeve 20 is completed. At this time, the rigid ball head 30 is directly opposite to the arc groove 41 on the rigid pad 40, and the rigid ball head 30 can be positioned in the arc groove 41 by self-adaptation, and can swing freely according to conditions such as load, speed and viscosity of lubricating oil. The arc groove 41 enhances this self-adaptation ability, making the system more stable; it can better maintain the thickness of the oil film, reduce the direct contact between metal parts, and thus significantly reduce friction and wear.

[0088] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A tilting pad device, characterized in that: include: The tile seat is provided with a wear-resistant surface; An elastic protective sleeve, one end of which is sealingly attached to a side of the tile seat opposite to the wear-resistant surface; A rigid ball head, arranged on the inner side of the elastic protective sleeve and connected to the tile seat; as well as A rigid tile is sealed and fitted to the other end of the elastic protective sleeve so that a closed cavity structure is formed on the inner side of the elastic protective sleeve. The rigid tile is used to be fixedly connected to the support ring. An arc-shaped groove is provided on a side of the rigid tile close to the rigid ball head, and the arc-shaped groove is opposite to the rigid ball head. An oil film gap is formed between the rigid ball head and the arc-shaped groove.

2. The tilting pad device according to claim 1, characterized in that A first sealing ring is provided at one end of the elastic protective sleeve close to the tile seat, and the first sealing ring is in sealing contact with the tile seat.

3. The tilting pad device according to claim 2, characterized in that The tilting pad device also includes a first pressure ring, which is attached to a side of the first sealing ring opposite to the pad seat and is fastened to the pad seat by bolts.

4. The tilting pad device according to claim 2, characterized in that A connecting seat is arranged on the side of the tile seat opposite to the wear-resistant surface. The connecting seat is detachably fixed to the tile seat, and the rigid ball head is integrally formed on the connecting seat.

5. The tilting pad device according to claim 1, characterized in that: A second sealing ring is provided at one end of the elastic protective sleeve close to the rigid tile, and the second sealing ring is sealed and fitted with the rigid tile.

6. The tilting pad device according to claim 5, characterized in that The tilting pad device also includes a second pressure ring, which is attached to a side of the second sealing ring opposite to the rigid pad and is fastened to the rigid pad by bolts.

7. The tilting pad device according to any one of claims 1 to 6, characterized in that: The surface of the elastic protective sleeve is provided with a plurality of spacer rings which are evenly spaced in the axial direction.

8. A thrust bearing, characterized in that: It comprises a support ring, a thrust plate and a plurality of tilting pad devices as described in any one of claims 1 to 7, wherein each of the tilting pad devices is fixed to the support ring at intervals along the circumferential direction of the support ring, and the thrust plate forms a friction pair with the wear-resistant surface.

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