A fixed bearing seal ring

Abstract

The application discloses a fixed bearing sealing ring and relates to the technical field of sealing rings, which comprises a high-temperature bearing outer steel ring and a high-temperature bearing inner steel ring arranged concentrically, a fixed ring assembly, a movable ring assembly, wherein the fixed ring assembly comprises a first ring beam fixedly installed on the inner side wall of the high-temperature bearing outer steel ring, and a matching ring is fixedly installed on the side of the first ring beam close to the high-temperature bearing inner steel ring; the movable ring assembly comprises a first ring beam fixedly installed on the outer side wall of the high-temperature bearing inner steel ring, and a horn-shaped deformed ring is fixedly installed on the side of the first ring beam close to the high-temperature bearing outer steel ring; one end of the deformed ring close to the roller is provided with a C-shaped groove ring, the deformed ring and the C-shaped groove ring are integrally formed, and a memory alloy spring ring is matched in the inside of the C-shaped groove ring. The built-in memory alloy spring ring absorbs the friction heat between the rubber rings, makes the rubber rings shrink to the original state through phase change, thereby eliminating the friction contact between the rubber rings, and the situation that long-time friction contact between the rubber rings leads to accelerated wear is avoided.

Description

Technical Field

[0001] This invention relates to the field of sealing ring technology, and more specifically, to a fixed bearing sealing ring. Background Technology

[0002] In the industrial manufacturing sector, intelligent robotic arms are one of the commonly used robotic devices. A robotic arm is an automated device designed to mimic the structure of a human arm. It typically consists of multiple movable joints and an end effector. Currently, robots in the industrial manufacturing sector use industrial robot bearings, which are usually made of high-temperature bearing steel that can withstand high temperatures. This allows them to adapt to continuous work and special environments, making the bearings more durable.

[0003] To ensure smooth joint rotation, bearings are typically used at the joints to reduce rotational resistance. Grease is usually injected inside the bearings to ensure smooth roller rolling. To prevent grease leakage, sealing rings are installed on the bearings. Some existing sealing rings are composite seals composed of multiple interlocking rubber rings. During operation, these seals rotate with the rotating body. Due to centripetal and inertial forces, the rotating rubber rings expand radially. When they come into contact with other rubber rings at their outer edges, frictional contact effectively seals the grease, preventing leakage. However, prolonged frictional contact, while achieving excellent sealing, can lead to accelerated wear of the rubber rings, thus reducing their service life.

[0004] To address the above problems, a fixed bearing seal ring is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, a fixed bearing seal ring is provided. This technical solution solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention can be implemented using the following technical solutions:

[0007] The present invention provides a fixed bearing seal ring, including a high-temperature bearing outer steel ring and a high-temperature bearing inner steel ring arranged concentrically, and a fixing ring assembly, which includes a first ring beam fixedly installed on the inner side wall of the high-temperature bearing outer steel ring, and a mating ring is fixedly installed on the side of the first ring beam near the high-temperature bearing inner steel ring.

[0008] It also includes a moving ring assembly, which includes a second ring beam fixedly installed on the outer wall of the inner steel ring of the high-temperature bearing. A trumpet-shaped deformable ring is fixedly installed on the side of the second ring beam near the outer steel ring of the high-temperature bearing. The end of the deformable ring near the roller has a C-shaped groove ring. The deformable ring and the C-shaped groove ring are integrally formed. A shape memory alloy spring ring is fitted inside the C-shaped groove ring. When the deformable ring rotates rapidly with the inner steel ring of the high-temperature bearing, the deformable ring ring and the C-shaped groove ring are driven to expand together due to the centripetal force and inertial force. After the C-shaped groove ring contacts the mating ring, friction generates heat. When the temperature accumulates to the phase transformation temperature of the shape memory alloy spring ring, the shape memory alloy spring ring contracts to its original shape, thereby driving the C-shaped groove ring to contract, so that it is separated from the mating ring ring and reduces wear.

[0009] Furthermore, an embedded groove is provided on the inner wall of the outer steel ring of the high-temperature bearing, and a first flange ring is fixedly installed on the side of the first ring beam near the outer steel ring of the high-temperature bearing. The first ring beam and the first flange ring are integrally formed, and the first flange ring is interference-fitted inside the embedded groove.

[0010] Furthermore, an outer groove is provided on the outer side wall of the inner steel ring of the high-temperature bearing, and a sixth flange ring is fixedly installed on the side of the second ring beam near the inner steel ring of the high-temperature bearing. The second ring beam and the sixth flange ring are integrally formed, and the sixth flange ring is interference-fitted inside the outer groove.

[0011] Furthermore, a first groove is provided on the side of the first ring beam near the inner steel ring of the high-temperature bearing, and a second flange ring is fixedly installed on the side of the mating ring near the outer steel ring of the high-temperature bearing. The mating ring and the second flange ring are integrally formed, and the second flange ring is bonded and fixed inside the first groove.

[0012] Furthermore, a fourth groove is provided on the side of the second ring beam near the outer steel ring of the high-temperature bearing, and the end of the deformable ring away from the roller is fixed inside the fourth groove.

[0013] Furthermore, the retaining ring assembly also includes an inner sealing ring located on the side of the first ring beam near the bearing rollers. A third flange ring is fixedly installed on the side of the inner sealing ring away from the bearing rollers, and the third flange ring is located on the side of the inner sealing ring near the outer steel ring of the high-temperature bearing. The third flange ring is integrally formed with the inner sealing ring. A fourth flange ring is fixedly installed on the side of the inner sealing ring away from the bearing rollers, and the fourth flange ring is located on the side of the inner sealing ring near the inner steel ring of the high-temperature bearing. The fourth flange ring is integrally formed with the inner sealing ring.

[0014] The first ring beam has a second groove on the side near the bearing roller, and the third flange ring is bonded and fixed inside the second groove.

[0015] Furthermore, the retaining ring assembly also includes a first seat ring disposed on the side of the first ring beam away from the bearing rollers. A fifth flange ring is fixedly installed on the side of the first seat ring close to the bearing rollers. The fifth flange ring is integrally formed with the first seat ring. A first ring groove is formed on the side of the first seat ring away from the bearing rollers.

[0016] The first ring beam has a third groove on the side away from the bearing roller, and the fifth flange ring is bonded and fixed inside the third groove.

[0017] Furthermore, the moving ring assembly also includes an outer sealing ring located on the side of the second ring beam away from the bearing rollers. A seventh flange ring is fixedly installed on the side of the outer sealing ring near the bearing rollers, and the seventh flange ring is located on the side of the outer sealing ring near the inner steel ring of the high-temperature bearing. The seventh flange ring is integrally formed with the outer sealing ring. An eighth flange ring is fixedly installed on the side of the outer sealing ring near the bearing rollers, and the eighth flange ring is located on the side of the outer sealing ring near the outer steel ring of the high-temperature bearing. The eighth flange ring is integrally formed with the outer sealing ring, and the eighth flange ring fits inside the first ring groove.

[0018] The second ring beam has a fifth groove on the side away from the bearing roller, and the seventh flange ring is bonded and fixed inside the fifth groove.

[0019] Furthermore, the moving ring assembly also includes a second seat ring located on the side of the second ring beam near the bearing rollers. A ninth flange ring is fixedly installed on the side of the second seat ring away from the bearing rollers. The ninth flange ring is integrally formed with the second seat ring. A second ring groove is opened on the side of the second seat ring near the bearing rollers, and a fourth flange ring fits inside the second ring groove.

[0020] The second ring beam has a sixth groove on the side near the bearing roller, and the ninth flange ring is bonded and fixed inside the sixth groove.

[0021] As described above, the features and advantages of a fixed bearing seal ring in this invention are:

[0022] The deformable ring and C-groove expand outward due to centripetal and inertial forces. During this expansion, the C-groove covers and supports the shape memory alloy spring ring, causing it to expand as it grows. As the C-groove continues to expand, its outer edge comes into contact with the mating ring, completely sealing the annular gap between the outer and inner steel rings of the high-temperature bearing. This prevents the grease remaining in the gap, which is used to lubricate the bearing rollers, from leaking out, ensuring stable bearing operation. After prolonged friction and heat generation, the internal temperature of the C-groove rises. When the temperature reaches the phase transition temperature of the shape memory alloy spring ring, it immediately contracts back to its original shape, causing the C-groove to contract as well. This physically separates the C-groove from the mating ring, avoiding the prolonged frictional contact between the rubber rings and the increased wear seen in existing technologies. This effectively extends the service life of the industrial robot bearing seals.

[0023] When the sealing ring is working, the inner sealing ring can prevent the grease from the bearing rollers from flowing into the sealing ring. At the same time, the cooperation between the fourth flange ring and the second ring groove can form a labyrinth channel, which effectively inhibits the loss of grease from the bearing rollers by extending and complicating the path of the grease into the sealing ring. Similarly, the outer sealing ring can prevent impurities from the external environment from entering the sealing ring. At the same time, the cooperation between the eighth flange ring and the first ring groove can form a labyrinth channel, which effectively inhibits the entry of external impurities into the bearing of the industrial robot by extending and complicating the path of external impurities into the sealing ring. This achieves the effect of ensuring the normal operation of the bearing rollers and effectively solves the problem of external impurities affecting the normal operation of the bearing rollers of high-temperature bearing steel. Attached Figure Description

[0024] Figure 1 This is a partial schematic diagram of the sealing ring assembly shown in this invention;

[0025] Figure 2 for Figure 1 Schematic diagram of the middle section;

[0026] Figure 3 This is a schematic diagram of the shape memory alloy spring coil structure shown in this invention;

[0027] Figure 4 This is a schematic diagram of the outer steel ring and inner steel ring of the high-temperature bearing shown in this invention.

[0028] Figure 5 This is a schematic diagram of the first and second ring beam structures shown in this invention;

[0029] Figure 6 This is a schematic diagram of the fit between the C-shaped groove ring and the mating ring as shown in this invention;

[0030] Figure 7 for Figure 1 Remove from Figure 2 A schematic diagram of the structure shown below.

[0031] The reference numerals in the accompanying drawings of this invention are as follows:

[0032] 11. Outer steel ring of high-temperature bearing; 111. Inner groove; 12. Inner steel ring of high-temperature bearing; 121. Outer groove;

[0033] Fixed ring assembly: 21, first ring beam; 211, first flange ring; 212, first groove; 213, second groove; 214, third groove; 22, mating ring; 221, second flange ring; 23, inner closing ring; 231, third flange ring; 232, fourth flange ring; 24, first seat ring; 241, fifth flange ring; 242, first ring groove;

[0034] Moving coil assembly: 31, second ring beam; 311, sixth flange ring; 312, fourth groove; 313, fifth groove; 314, sixth groove; 32, deformable ring; 33, C-groove ring; 34, shape memory alloy spring ring; 35, outer sealing ring; 351, seventh flange ring; 352, eighth flange ring; 36, second seat ring; 361, ninth flange ring; 362, second ring groove. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0036] See Figures 1-7 As shown, an embodiment of the present invention is provided, and a fixed bearing seal ring will be described in detail below:

[0037] See Figures 1-6 As shown in the figure, in this embodiment, due to the small and complex size of the sealing ring structure, in order to more clearly show the fit relationship between the various details, the accompanying drawings only show a partial cross-sectional view.

[0038] A fixed bearing seal ring includes a high-temperature bearing outer steel ring 11 and a high-temperature bearing inner steel ring 12 arranged concentrically, and also includes a fixing ring assembly, which includes a first ring beam 21 fixedly installed on the inner sidewall of the high-temperature bearing outer steel ring 11. A mating ring 22 is fixedly installed on the side of the first ring beam 21 near the high-temperature bearing inner steel ring 12. In this embodiment, the mating ring 22 is specifically installed as follows: a first groove 212 is opened on the side of the first ring beam 21 near the high-temperature bearing inner steel ring 12, and a second flange ring 221 is fixedly installed on the side of the mating ring 22 near the high-temperature bearing outer steel ring 11. The mating ring 22 and the second flange ring 221 are integrally formed, and the second flange ring 221 is bonded and fixed inside the first groove 212.

[0039] Furthermore, the fixed bearing seal also includes a moving ring assembly, which includes a second ring beam 31 fixedly installed on the outer wall of the inner steel ring 12 of the high-temperature bearing. A trumpet-shaped deformable ring 32 is fixedly installed on the side of the second ring beam 31 near the outer steel ring 11 of the high-temperature bearing. In this embodiment, the deformable ring 32 is specifically installed as follows: a fourth groove 312 is provided on the side of the second ring beam 31 near the outer steel ring 11 of the high-temperature bearing; the end of the deformable ring 32 away from the roller is fixed inside the fourth groove 312; and a C-shaped groove 33 is provided on the end of the deformable ring 32 near the roller. The C-shaped groove 33 is located within the trumpet-shaped deformable ring 32. At the large end, the deformable ring 32 and the C-groove ring 33 are integrally formed. The C-groove ring 33 is fitted with a shape memory alloy spring ring 34. When the deformable ring 32 rotates rapidly with the inner steel ring 12 of the high-temperature bearing, the deformable ring 32 and the C-groove ring 33 are driven by centripetal force and inertial force to expand together with the shape memory alloy spring ring 34. After the C-groove ring 33 contacts the mating ring 22, it rubs against it and generates heat. When the temperature accumulates to the phase transformation temperature of the shape memory alloy spring ring 34, the shape memory alloy spring ring 34 shrinks back to its original shape, thereby driving the C-groove ring 33 to shrink, so that it is separated from the mating ring 22 and reduces wear.

[0040] It should be noted that in industrial intelligent robotic arms, the selection of industrial robot bearing seals must take into account motion accuracy, load characteristics, and complex working conditions. Common types, based on structural design, are as follows: lip-type skeleton oil seals, such as single-lip / double-lip types, are the mainstream choice for dynamic sealing; O-rings, due to their simple structure and low cost, are mostly used for sealing static or low-speed rotating parts; composite seals, such as rubber and metal skeleton composites with dustproof lip designs, can integrate multiple functions and enhance reliability under complex working conditions; labyrinth seals, as non-contact seals, are suitable for high-speed rotating bearings to reduce frictional heat generation and are often used in conjunction with other seals to also provide dustproof effects.

[0041] This embodiment addresses the practical application situation where there is always a certain assembly gap between the sealing ring and the bearing. When the sealing ring is subjected to the combined effects of centripetal force and inertial force during rotation, its outer part is thrown out, expanding and coming into frictional contact with other structures. This achieves the effect of sealing the assembly gap and improving sealing performance in a short time. However, prolonged friction will accelerate the wear of the sealing ring. This invention utilizes the heat generated by friction to suppress the wear of the sealing ring during use and improve its service life by using the characteristic of the shape memory alloy spring ring 34 to shrink itself after absorbing a certain amount of heat, while maximizing the sealing effect.

[0042] The shape memory alloy spring coil 34 involved in this embodiment is made of existing shape memory alloy materials, see reference. Figure 3 As shown, shape memory alloys are a class of functional alloy materials with a unique "shape memory effect". Their core characteristic is that after plastic deformation under certain temperature conditions, they can recover to their original shape before deformation by heating or other means. They may also have "super elasticity" far exceeding that of ordinary metals, that is, the ability to completely recover after deformation. This characteristic comes from the reversible phase transformation process of their internal crystal structure under temperature changes.

[0043] The shape memory effect of shape memory alloys is essentially driven by martensitic and inverse phase transformations. At lower temperatures, the alloy is in the austenitic phase, also known as the high-temperature phase, with a regular and highly symmetrical crystal structure. When the temperature drops below a specific value, i.e., below the martensitic transformation initiation temperature, the crystal structure transforms into the martensitic phase, i.e., the low-temperature phase. This phase consists of various sliding "variants." Under external forces, these variants can undergo relative displacement through crystal slip or twinning, causing macroscopic plastic deformation of the material, such as bending or stretching. At this point, the alloy remembers the deformed shape. When the temperature rises back to another critical value, i.e. above the austenitic inverse transformation initiation temperature, the martensitic phase will transform back into the austenitic phase through inverse transformation. The crystal structure returns to its initial regular state, the variant displacements caused during deformation are eliminated, and the material returns to its original shape before deformation. This process is highly reversible.

[0044] It is worth noting that alloy composition, such as the nickel-titanium ratio in nickel-titanium alloys, and heat treatment processes, such as annealing temperature, can precisely control the phase transformation temperature range and crystal structure stability, thereby enabling precise design of the shape memory effect and allowing it to play a unique role in various fields.

[0045] The specific working principle of the above structure is as follows: the outer steel ring 11 of the high-temperature bearing is fixedly connected to the bearing seat of the robotic arm, while the inner steel ring 12 of the high-temperature bearing is fitted onto the rotating body. When the rotating body rotates rapidly, the deformable ring 32, which is connected to the inner steel ring 12 of the high-temperature bearing via the second ring beam 31, will rotate rapidly along with the inner steel ring 12. At this time, the deformable ring 32 and the C-shaped groove ring 33 will expand outward due to centripetal force and inertial force. During the expansion process, since the C-shaped groove ring 33 covers and supports the shape memory alloy spring ring 34, it will drive the shape memory alloy spring ring 34 to expand and grow together as it expands. After the C-shaped groove ring 33 continues to expand, its outer edge will connect to... When the C-groove ring 33 contacts the mating ring 22, the annular gap between the outer steel ring 11 and the inner steel ring 12 of the high-temperature bearing is sealed, preventing the grease remaining in the gap for lubricating the bearing rollers from leaking out. After prolonged friction and heat generation, the internal temperature of the C-groove ring 33 will rise. When the temperature accumulates to the phase transformation temperature of the shape memory alloy spring ring 34, the shape memory alloy spring ring 34 will immediately shrink back to its original shape. Through the force exerted by the shape memory alloy spring ring 34 on the C-groove ring 33, the C-groove ring 33 will shrink, causing it to detach from the mating ring 22, thus avoiding prolonged frictional contact between the two and achieving the effect of reducing wear.

[0046] See Figure 1 and Figures 4-5 As shown, the inner wall of the outer steel ring 11 of the high-temperature bearing has an inner groove 111. The first ring beam 21 is fixedly installed on the side near the outer steel ring 11 of the high-temperature bearing. The first ring beam 21 and the first flange ring 211 are integrally formed. The first flange ring 211 is interference-fitted inside the inner groove 111. The outer wall of the inner steel ring 12 of the high-temperature bearing has an outer groove 121. The second ring beam 31 is fixedly installed on the side near the inner steel ring 12 of the high-temperature bearing. The second ring beam 31 and the sixth flange ring 311 are integrally formed. The sixth flange ring 311 is interference-fitted inside the outer groove 121.

[0047] It should be noted that setting annular grooves for installing sealing rings on the outer steel ring 11 and the inner steel ring 12 of the high-temperature bearing is a common technical method, which will not be elaborated here.

[0048] As described above, by interfering with the first flange ring 211 inside the inner groove 111 and interfering with the sixth flange ring 311 inside the outer groove 121, the first ring beam 21 and the second ring beam 31 can be fixed respectively. The stable installation of the first ring beam 21 and the second ring beam 31 provides a solid foundation for the subsequent installation of other sealing rings.

[0049] See Figure 1 and Figure 4 , Figure 7 As shown, the retaining ring assembly also includes an inner sealing ring 23 located on the side of the first ring beam 21 near the bearing roller. A third flange ring 231 is fixedly installed on the side of the inner sealing ring 23 away from the bearing roller, and the third flange ring 231 is located on the side of the inner sealing ring 23 near the outer steel ring 11 of the high-temperature bearing. The third flange ring 231 is integrally formed with the inner sealing ring 23. A fourth flange ring 232 is fixedly installed on the side of the inner sealing ring 23 away from the bearing roller, and the fourth flange ring 232 is located on the side of the inner sealing ring 23 near the inner steel ring 12 of the high-temperature bearing. The fourth flange ring 232 is integrally formed with the inner sealing ring 23. A second groove 213 is provided on the side of the first ring beam 21 near the bearing roller, and the third flange ring 231 is bonded and fixed inside the second groove 213.

[0050] The retaining ring assembly also includes a first retaining ring 24 located on the side of the first ring beam 21 away from the bearing rollers. A fifth flange ring 241 is fixedly installed on the side of the first retaining ring 24 near the bearing rollers. The fifth flange ring 241 is integrally formed with the first retaining ring 24. A first ring groove 242 is formed on the side of the first retaining ring 24 away from the bearing rollers. A third groove 214 is formed on the side of the first ring beam 21 away from the bearing rollers. The fifth flange ring 241 is bonded and fixed inside the third groove 214.

[0051] The moving ring assembly also includes an outer sealing ring 35 located on the side of the second ring beam 31 away from the bearing rollers. A seventh flange ring 351 is fixedly installed on the side of the outer sealing ring 35 near the bearing rollers, and the seventh flange ring 351 is located on the side of the outer sealing ring 35 near the inner steel ring 12 of the high-temperature bearing. The seventh flange ring 351 is integrally formed with the outer sealing ring 35. An eighth flange ring 352 is fixedly installed on the side of the outer sealing ring 35 near the bearing rollers, and the eighth flange ring 352 is located on the side of the outer sealing ring 35 near the outer steel ring 11 of the high-temperature bearing. The eighth flange ring 352 is integrally formed with the outer sealing ring 35. The eighth flange ring 352 fits inside the first ring groove 242. A fifth groove 313 is opened on the side of the second ring beam 31 away from the bearing rollers, and the seventh flange ring 351 is bonded and fixed inside the fifth groove 313.

[0052] The moving ring assembly also includes a second seat ring 36 located on the side of the second ring beam 31 near the bearing roller. A ninth flange ring 361 is fixedly installed on the side of the second seat ring 36 away from the bearing roller. The ninth flange ring 361 is integrally formed with the second seat ring 36. A second annular groove 362 is formed on the side of the second seat ring 36 near the bearing roller. A fourth flange ring 232 fits inside the second annular groove 362. A sixth recess 314 is formed on the side of the second ring beam 31 near the bearing roller. The ninth flange ring 361 is bonded and fixed inside the sixth recess 314.

[0053] When the sealing ring is working, the inner sealing ring 23 can prevent the grease from the bearing rollers from flowing into the sealing ring. At the same time, the cooperation between the fourth flange ring 232 and the second ring groove 362 can form a labyrinth channel, which effectively inhibits the loss of grease from the bearing rollers by extending and complicating the path of the grease into the sealing ring. Similarly, the outer sealing ring 35 can prevent impurities from the external environment from entering the sealing ring. At the same time, the cooperation between the eighth flange ring 352 and the first ring groove 242 can form a labyrinth channel, which effectively inhibits the entry of external impurities into the bearing by extending the path of external impurities into the sealing ring and making the path tortuous and complicated, thus avoiding affecting the normal operation of the bearing rollers.

[0054] To increase the complexity of the maze passage, the passage formed by the fitting gap between the fourth flange ring 232 and the second ring groove 362, and between the eighth flange ring 352 and the first ring groove 242, can be made as tortuous as possible, within the limits of processing technology.

[0055] Furthermore, in order to improve processing convenience and reduce mold opening costs, the inner closed ring 23 and the outer closed ring 35, and the first seat ring 24 and the second seat ring 36 have the same structure.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixed bearing seal ring, comprising a high-temperature bearing outer steel ring (11) and a high-temperature bearing inner steel ring (12) arranged concentrically, characterized in that: It also includes a ring fixing assembly, which includes a first ring beam (21) fixedly installed on the inner side wall of the outer steel ring (11) of the high-temperature bearing, and a mating ring (22) is fixedly installed on the side of the first ring beam (21) near the inner steel ring (12) of the high-temperature bearing; It also includes a moving ring assembly, which includes a second ring beam (31) fixedly installed on the outer wall of the inner steel ring (12) of the high-temperature bearing. A flared deformable ring (32) is fixedly installed on the side of the second ring beam (31) near the outer steel ring (11) of the high-temperature bearing. A C-groove ring (33) is provided at the end of the deformable ring (32) near the roller. A shape memory alloy spring ring (34) is fitted inside the C-groove ring (33). When the deformable ring (32) moves rapidly with the inner steel ring (12) of the high-temperature bearing... During rotation, the deformable ring (32) and the C-groove ring (33) expand together due to the centripetal force and inertial force. After the C-groove ring (33) contacts the mating ring (22), it generates heat through friction. When the temperature accumulates to the phase transition temperature of the shape memory alloy spring ring (34), the shape memory alloy spring ring (34) shrinks back to its original shape, thereby causing the C-groove ring (33) to shrink, thus detaching it from the mating ring (22) and reducing wear.

2. The fixed bearing seal ring according to claim 1, characterized in that: The inner wall of the outer steel ring (11) of the high temperature bearing is provided with an embedded groove (111). The first ring beam (21) is fixedly installed with a first flange ring (211) on the side near the outer steel ring (11) of the high temperature bearing. The first ring beam (21) and the first flange ring (211) are integrally formed, and the first flange ring (211) is interference-fitted inside the embedded groove (111).

3. A fixed bearing seal ring according to claim 2, characterized in that: An outer groove (121) is provided on the outer side wall of the inner steel ring (12) of the high-temperature bearing. A sixth flange ring (311) is fixedly installed on the side of the second ring beam (31) near the inner steel ring (12) of the high-temperature bearing. The second ring beam (31) and the sixth flange ring (311) are integrally formed, and the sixth flange ring (311) is interference-fitted inside the outer groove (121).

4. A fixed bearing seal ring according to claim 3, characterized in that: The first ring beam (21) has a first groove (212) on the side near the inner steel ring (12) of the high-temperature bearing. The mating ring (22) has a second flange ring (221) fixedly installed on the side near the outer steel ring (11) of the high-temperature bearing. The mating ring (22) and the second flange ring (221) are integrally formed, and the second flange ring (221) is bonded and fixed inside the first groove (212).

5. A fixed bearing seal ring according to claim 4, characterized in that: The second ring beam (31) has a fourth groove (312) on the side near the outer steel ring (11) of the high-temperature bearing, and the end of the deformable ring (32) away from the roller is fixed inside the fourth groove (312).

6. A fixed bearing seal ring according to claim 5, characterized in that: The ring assembly also includes an inner sealing ring (23) located on the side of the first ring beam (21) near the bearing roller. A third flange ring (231) is fixedly installed on the side of the inner sealing ring (23) away from the bearing roller, and the third flange ring (231) is located on the side of the inner sealing ring (23) near the outer steel ring (11) of the high-temperature bearing. The third flange ring (231) is integrally formed with the inner sealing ring (23). A fourth flange ring (232) is fixedly installed on the side of the inner sealing ring (23) away from the bearing roller, and the fourth flange ring (232) is located on the side of the inner sealing ring (23) near the inner steel ring (12) of the high-temperature bearing. The fourth flange ring (232) is integrally formed with the inner sealing ring (23). The first ring beam (21) has a second groove (213) on the side near the bearing roller, and the third flange ring (231) is bonded and fixed inside the second groove (213).

7. A fixed bearing seal ring according to claim 6, characterized in that: The fixed ring assembly also includes a first seat ring (24) located on the side of the first ring beam (21) away from the bearing roller. A fifth flange ring (241) is fixedly installed on the side of the first seat ring (24) close to the bearing roller. The fifth flange ring (241) is integrally formed with the first seat ring (24). A first ring groove (242) is provided on the side of the first seat ring (24) away from the bearing roller. The first ring beam (21) has a third groove (214) on the side away from the bearing roller, and the fifth flange ring (241) is bonded and fixed inside the third groove (214).

8. A fixed bearing seal ring according to claim 7, characterized in that: The moving ring assembly also includes an outer sealing ring (35) located on the side of the second ring beam (31) away from the bearing rollers. A seventh flange ring (351) is fixedly installed on the side of the outer sealing ring (35) near the bearing rollers. The seventh flange ring (351) is located on the side of the outer sealing ring (35) near the inner steel ring (12) of the high-temperature bearing. The seventh flange ring (351) is integrally formed with the outer sealing ring (35). An eighth flange ring (352) is fixedly installed on the side of the outer sealing ring (35) near the bearing rollers. The eighth flange ring (352) is located on the side of the outer sealing ring (35) near the outer steel ring (11) of the high-temperature bearing. The eighth flange ring (352) is integrally formed with the outer sealing ring (35). The eighth flange ring (352) fits inside the first ring groove (242). The second ring beam (31) has a fifth groove (313) on the side away from the bearing roller, and the seventh flange ring (351) is bonded and fixed inside the fifth groove (313).

9. A fixed bearing seal ring according to claim 8, characterized in that: The moving ring assembly also includes a second seat ring (36) located on the side of the second ring beam (31) near the bearing roller. A ninth flange ring (361) is fixedly installed on the side of the second seat ring (36) away from the bearing roller. The ninth flange ring (361) is integrally formed with the second seat ring (36). A second ring groove (362) is opened on the side of the second seat ring (36) near the bearing roller. A fourth flange ring (232) fits inside the second ring groove (362). The second ring beam (31) has a sixth groove (314) on the side near the bearing roller, and the ninth flange ring (361) is bonded and fixed inside the sixth groove (314).

Images