High-temperature-resistant self-lubricating bearing

Abstract

The invention belongs to the technical field of bearings, and particularly relates to a high-temperature-resistant self-lubricating bearing which comprises an inner ring, an outer ring with a cavity is arranged on the surface of the inner ring, a plurality of rollers are mounted between the outer ring and the inner ring, the cambered surfaces of the rollers are in contact with the outer ring and the inner ring, and a retainer is mounted on the surface of the inner ring; efficient lubrication is achieved through unique design. On one hand, the movable pushing plate is arranged in the discharging cavity and matched with the extrusion part, when the pushing plate moves, the pushing plate is driven through transmission of the S-shaped rod, solid lubricating oil can be rapidly extruded to the surface of the roller, and it is ensured that lubrication is timely and effective; on the other hand, when the bearing operates for a long time and the temperature rises, the air bag arranged in the mounting box pushes the push plate to move due to the thermal expansion effect, and solid lubricating oil is automatically extruded out for lubrication. The continuous and timely lubrication mode effectively reduces the friction between the roller and the inner ring and the friction between the roller and the outer ring, obviously improves the temperature resistance of the bearing, prolongs the service life of the bearing, and enables the bearing to stably operate in a high-temperature environment.

Description

Technical Field

[0001] This invention relates to the field of bearing technology, and in particular to a high-temperature self-lubricating bearing. Background Technology

[0002] In modern industry, bearings, as key components in mechanical equipment that support rotating parts, reduce friction coefficients, and ensure rotational accuracy, are widely used in numerous industries such as automotive, aerospace, energy, and metallurgy. With the continuous advancement of industrial technology, mechanical equipment is evolving towards extreme operating conditions such as high speed, heavy load, and high temperature, placing increasingly stringent demands on bearing performance. Especially in high-temperature environments, traditional bearings are prone to accelerated wear, shortened lifespan, and unstable operation due to lubrication and heat dissipation issues, severely impacting the normal operation and reliability of mechanical equipment. Therefore, developing bearings with high temperature resistance and self-lubricating properties has become a crucial trend in the current industry development.

[0003] Traditional bearing lubrication methods, such as grease lubrication and oil lubrication, have significant shortcomings when operating in high-temperature environments. Grease lubrication is prone to deterioration and loss at high temperatures, leading to a rapid decline in lubrication performance and failing to provide continuous and effective lubrication protection for the bearing. While oil lubrication can meet the requirements of high-temperature conditions to some extent, it requires a complex lubrication system, increasing equipment cost and maintenance difficulty. Moreover, both grease and oil lubrication are difficult to precisely control the supply amount and timing of lubricant at high temperatures, easily causing insufficient or excessive lubrication, affecting the normal operation of the bearing.

[0004] During bearing operation, friction between the rollers and the inner and outer rings generates wear particles, while the lubricating oil deteriorates and accumulates over time. If these impurities and old lubricating oil are not cleaned promptly, they will further exacerbate bearing wear and reduce bearing cleanliness and operational stability. However, most existing bearings are not equipped with dedicated automatic cleaning devices, requiring regular manual cleaning and maintenance. This not only increases maintenance costs and workload but also makes it difficult to remove impurities in a timely manner on equipment where shutdown for maintenance is challenging, severely impacting bearing lifespan and the normal operation of the equipment.

[0005] When bearing maintenance is required, such as cleaning scrapers or replacing parts, the existing bearing structure design is often inadequate, leading to complex and difficult maintenance operations. For example, the contact and separation of cleaning components from rollers in some bearings is inconvenient, requiring the disassembly of multiple parts, increasing maintenance time and costs. Furthermore, the fixing structure of some bearings is not stable enough, and loosening can easily occur during operation, causing changes in the relative positions of the bearing components, affecting the bearing's accuracy and operational stability, and potentially even leading to safety accidents. Summary of the Invention

[0006] To address the aforementioned problems, this invention proposes a high-temperature-resistant self-lubricating bearing, which more precisely solves the problems mentioned in the background art.

[0007] This invention is achieved through the following technical solution: This invention proposes a high-temperature resistant self-lubricating bearing, comprising an inner ring, an outer ring with a cavity on its surface, and multiple rollers installed between the outer and inner rings, with the arc surfaces of the rollers contacting both the outer and inner rings. A cage is installed on the surface of the inner ring to divide the rollers. Two dividing plates are provided on one side of each roller on the inner wall of the cavity, forming a discharge chamber between the two dividing plates. The discharge chamber is used to place solid lubricating oil. A movable pusher plate is provided on the inner bottom wall of the discharge chamber to push the solid lubricating oil. A discharge groove is provided at the discharge chamber of the cavity, corresponding to the position of the roller, so that the solid lubricating oil is squeezed out by the pusher plate and contacts the roller surface for lubrication. A pressing part is provided at the bottom of the outer ring to push the pusher plate.

[0008] Preferably, the extrusion section includes a mounting box located at the bottom of the outer ring. A movable push plate is provided on the inner wall of the mounting box. An S-shaped rod is installed on the side of the push plate, and the other end of the S-shaped rod is connected to the push plate, so as to drive the push plate to move synchronously when the push plate moves.

[0009] Preferably, a support spring is installed on the side of the push plate, and the end of the support spring is connected to the inner wall of the mounting box. An air bladder is provided between the inner wall of the mounting box and the push plate. An air nozzle is installed on the side of the air bladder and extends to the outside of the mounting box. The air bladder is used to expand due to thermal expansion when the bearing operates for a long time and the temperature rises, so as to push the push plate and drive the push plate to extrude solid lubricating oil.

[0010] Preferably, the inner wall of the cage has a placement groove on one side of the roller, and a cleaning part is provided in the placement groove for cleaning the lubricating oil on the roller surface that has been used for a long time.

[0011] Preferably, a base is installed at the bottom of the outer ring, the base is used to hold the lubricating oil after cleaning, and the surface of the base is provided with a chip discharge port for discharging the lubricating oil after cleaning.

[0012] Preferably, the cleaning unit includes a mounting plate installed on the inner wall of the placement groove, a return spring is installed at the end of the mounting plate, a scraper is installed on one side of the return spring, and the position of the scraper is adjustable for cleaning the roller after adjusting it to the roller position.

[0013] Preferably, a pressure ring is provided at the top of the outer ring, and a pressure plate is installed at the bottom of the pressure ring. The bottom of the pressure plate and the top of the scraper are both set as inclined surfaces, so that when the pressure ring is placed at the top of the outer ring, the pressure plate can squeeze the scraper to separate the scraper from the roller.

[0014] Preferably, a mounting plate is mounted on the surface of the pressure ring, the mounting plate being used to fix the pressure ring after it is placed on top of the outer ring, and a rotatable limiting plate is mounted on the top of the outer ring, the limiting plate being used to limit the mounting plate after it is rotated to the top of the mounting plate.

[0015] Preferably, a nut is installed on the top of the limiting plate, and a bolt is threaded onto the inner wall of the nut, the bolt being connected through the limiting plate and the mounting plate.

[0016] Compared with the prior art, the present invention provides a high-temperature resistant self-lubricating bearing, which has the following beneficial effects: This high-temperature resistant self-lubricating bearing achieves efficient lubrication through a unique design. Firstly, a movable pusher plate within the discharge chamber, working in conjunction with the extrusion section, drives the pusher plate via an S-shaped rod as it moves, rapidly extruding solid lubricating oil onto the roller surface, ensuring timely and effective lubrication. Secondly, an air bladder within the mounting housing, due to thermal expansion as the bearing's temperature rises during prolonged operation, pushes the pusher plate to move, automatically extruding solid lubricating oil for lubrication. This continuous and timely lubrication method effectively reduces friction between the rollers and the inner and outer rings, significantly improving the bearing's temperature resistance and service life, enabling stable operation in high-temperature environments.

[0017] This high-temperature resistant self-lubricating bearing features a groove and cleaning section on the inner wall of the cage. The scraper in the cleaning section, under the action of a return spring, makes close contact with the roller surface, promptly removing long-used lubricating oil and impurities, preventing oil buildup and deterioration that could damage the bearing. Simultaneously, the base and chip discharge port at the bottom of the outer ring facilitate the drainage of waste oil after cleaning, keeping the bearing interior clean and dry.

[0018] This high-temperature resistant self-lubricating bearing features a pressure ring and pressure plate on the top of the outer ring. An inclined surface pressurizes the scraper, disengaging it from the rollers for easy cleaning and other maintenance. A mounting plate on the pressure ring surface engages with a rotatable limiting plate on the top of the outer ring to secure and limit the pressure ring. Nuts and bolts on the top of the limiting plate further stabilize it and prevent the pressure ring from loosening or falling off. This robust structural design ensures ease of operation and safety during bearing maintenance, improving the overall stability and reliability of the bearing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a high-temperature-resistant self-lubricating bearing proposed in this invention; Figure 2 This is a front sectional view of the structure of a high-temperature self-lubricating bearing proposed in this invention; Figure 3 This is a side sectional view of the structure of a high-temperature self-lubricating bearing proposed in this invention; Figure 4 This is a top view of the structure of a high-temperature self-lubricating bearing proposed in this invention; Figure 5 This is a top sectional view of the structure of a high-temperature self-lubricating bearing proposed in this invention; Figure 6 This is a schematic diagram of the structure of a high-temperature-resistant self-lubricating bearing proposed in this invention; Figure 7 This is a schematic diagram of the structure of a high-temperature-resistant self-lubricating bearing proposed in this invention; Figure 8 This invention proposes a high-temperature resistant self-lubricating bearing. Figure 1 Enlarged schematic diagram of region B in the middle.

[0020] In the diagram: 1. Outer ring; 11. Dividing plate; 12. Feeding chamber; 13. Discharge chute; 14. Limiting plate; 15. Nut; 16. Bolt; 2. Inner ring; 3. Roller; 4. Cage; 41. Placement groove; 5. Push plate; 6. Extrusion section; 61. Mounting box; 62. S-shaped rod; 63. Push plate; 64. Support spring; 65. Airbag; 66. Air nozzle; 7. Base; 71. Chip discharge port; 8. Pressure ring; 81. Pressure plate; 82. Mounting plate; 9. Cleaning section; 91. Scraper; 92. Return spring; 93. Mounting plate. Detailed Implementation

[0021] To more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings. Example

[0022] like Figures 1-8As shown, an embodiment of the present invention discloses a high-temperature self-lubricating bearing, comprising an inner ring 2, the surface of which is provided with an outer ring 1 having a cavity. Multiple rollers 3 are uniformly installed between the outer ring 1 and the inner ring 2, the arc surfaces of which are in close contact with the outer ring 1 and the inner ring 2 to ensure the stability of the bearing during operation. A cage 4 is fixedly installed on the surface of the inner ring 2, which is used to divide the rollers 3 and prevent them from colliding with each other during operation. Two dividing plates 11 are provided on one side of each roller 3 on the inner wall of the cavity, forming a discharge chamber 12 between the two dividing plates 11, which is used to place solid lubricating oil. A movable pusher plate 5 is provided on the inner bottom wall of the discharge chamber 12, which can push the solid lubricating oil towards the roller 3 when subjected to external force. A discharge groove 13 is provided at the discharge chamber 12, corresponding to the position of the roller 3. When the pusher plate 5 pushes the solid lubricating oil, the lubricating oil is squeezed out through the discharge groove 13 and comes into contact with the surface of the roller 3, thus lubricating the roller 3. This effectively reduces the friction between the roller 3 and the inner ring 2 and outer ring 1, improving the bearing's temperature resistance and service life. In practical applications, this high-temperature self-lubricating bearing can operate stably in high-temperature environments. The solid lubricating oil is continuously supplied to the surface of the roller 3 by the pusher plate 5, ensuring the long-term lubrication effect of the bearing and significantly improving its temperature resistance and service life.

[0023] In this invention, the extrusion section 6 includes a mounting box 61 located at the bottom of the outer ring 1. A movable push plate 63 is provided on the inner wall of the mounting box 61, and an S-shaped rod 62 is fixedly mounted on the side of the push plate 63. The other end of the S-shaped rod 62 is connected to the pusher plate 5. When the push plate 63 moves within the mounting box 61, the pusher plate 5 moves synchronously through the transmission action of the S-shaped rod 62, thereby pushing the solid lubricating oil. Through the design of the extrusion section 6, when the bearing requires lubrication, the movement of the push plate 63 can quickly drive the pusher plate 5 to extrude the solid lubricating oil onto the surface of the roller 3, ensuring timely and effective lubrication and improving the bearing's operational stability and temperature resistance.

[0024] In this invention, a support spring 64 is installed on the side of the push plate 63, and the end of the support spring 64 is connected to the inner wall of the mounting box 61 to provide a restoring force for the push plate 63. An air bladder 65 is provided between the inner wall of the mounting box 61 and the push plate 63, and an air nozzle 66 is installed on the side of the air bladder 65, extending to the outside of the mounting box 61. After the bearing has been used for a long time, the air bladder 65 expands due to heat, pushing the push plate 63 to move, which in turn drives the pusher plate 5 to extrude solid lubricating oil. In practical applications, when the bearing operates for a long time and the temperature rises, the air bladder 65 pushes the push plate 63 to move due to the thermal expansion effect, automatically realizing the extrusion and lubrication of solid lubricating oil, effectively preventing bearing wear and failure caused by high temperature, and improving the reliability and service life of the bearing.

[0025] In this invention, a placement groove 41 is formed on the inner wall of the cage 4 on one side of the roller 3, and a cleaning part 9 is provided in the placement groove 41. The cleaning part 9 is used to clean the lubricating oil that has been used for a long time on the surface of the roller 3, preventing the lubricating oil from accumulating and deteriorating, which could damage the bearing. Through the design of the cleaning part 9, the old lubricating oil on the surface of the roller 3 can be cleaned in time during the operation of the bearing, maintaining the cleanliness and lubrication effect inside the bearing, thereby improving the operational stability and service life of the bearing.

[0026] In this invention, a base 7 is installed at the bottom of the outer ring 1. The base 7 is used to hold the lubricating oil after cleaning. A chip discharge port 71 is provided on the surface of the base 7 to discharge the lubricating oil after cleaning, preventing the lubricating oil from accumulating inside the base 7. The design of the base 7 and the chip discharge port 71 allows for convenient discharge of waste oil during lubrication cleaning of the bearing, maintaining the cleanliness and dryness of the bearing's interior, which is beneficial for the long-term stable operation of the bearing.

[0027] In this invention, the cleaning unit 9 includes a mounting plate 93 installed on the inner wall of the placement groove 41. A return spring 92 is installed at the end of the mounting plate 93, and a scraper 91 is installed on one side of the return spring 92. The position of the scraper 91 is adjustable. By adjusting the position of the scraper 91 to make it contact the roller 3, the surface of the roller 3 is cleaned. In practical applications, the scraper 91 maintains close contact with the surface of the roller 3 through the action of the return spring 92, effectively cleaning the old lubricating oil and impurities on the surface of the roller 3, and improving the cleanliness and operational stability of the bearing.

[0028] In this invention, a pressure ring 8 is provided at the top of the outer ring 1, and a pressure plate 81 is installed at the bottom of the pressure ring 8. Both the bottom of the pressure plate 81 and the top of the scraper 91 are sloped. When the pressure ring 8 is placed on top of the outer ring 1, the pressure plate 81 can squeeze the scraper 91, causing the scraper 91 to disengage from the roller 3. Through the design of the pressure ring 8 and the pressure plate 81, when it is necessary to clean the scraper 91 or perform other maintenance operations, simply placing the pressure ring 8 on top of the outer ring 1 is sufficient to disengage the scraper 91 from the roller 3, facilitating the maintenance and upkeep of the bearing.

[0029] In this invention, a mounting plate 82 is installed on the surface of the pressure ring 8. The mounting plate 82 is used to fix the pressure ring 8 after it is placed on top of the outer ring 1. A rotatable limiting plate 14 is installed on the top of the outer ring 1. The limiting plate 14 is used to limit the mounting plate 82 after it rotates to the top, preventing the pressure ring 8 from loosening during operation. Through the design of the mounting plate 82 and the limiting plate 14, the pressure ring 8 can be effectively fixed and limited after being placed on top of the outer ring 1, ensuring the stability of the scraper 91 in the disengaged state from the roller 3, and improving the maintenance efficiency and safety of the bearing.

[0030] In this invention, a nut 15 is installed on the top of the limiting plate 14, and a bolt 16 is threadedly connected to the inner wall of the nut 15. When the limiting plate 14 rotates to the top of the mounting plate 82, the bolt 16 passes through the mounting plate 82 and is threadedly connected to the nut 15, thereby further fixing the mounting plate 82. Through the design of the nut 15 and bolt 16, the limiting plate 14 can be more firmly fixed after rotating to the top of the mounting plate 82, effectively preventing the pressure ring 8 from loosening and falling off during operation, and improving the overall stability and reliability of the bearing.

[0031] The working principle of this invention is as follows: A comprehensive inspection is performed on all components of the high-temperature self-lubricating bearing, including the outer ring 1, inner ring 2, rollers 3, cage 4, pressing section 6, related component mounting box 61, S-shaped rod 62, push plate 63, support spring 64, air bladder 65, air nozzle 66, cleaning section 9, related component mounting plate 93, return spring 92, scraper 91, base 7, pressure ring 8, and related fixing component mounting plate 82, limit plate 14, nut 15, and bolt 16, to ensure no damage, deformation, or missing parts. The surfaces of each component are cleaned with a cleaning agent and a clean cloth to remove oil, dust, and other impurities, ensuring surface cleanliness and preventing impurities from entering the bearing and affecting its operation. The inner ring 2 is placed on a suitable workbench, and the cage 4 is fixedly installed on the surface of the inner ring 2. Multiple rollers 3 are then evenly installed between the inner ring 2 and the cage 4, ensuring that the arc surface of the rollers 3 is in close contact with the inner ring 2 and the cage 4, guaranteeing the smooth operation of the bearing. The outer ring 1 with a cavity is fitted over the inner ring 2 and the rollers 3, ensuring the rollers 3 between the outer ring 1 and the inner ring 2 are properly installed. Two dividing plates 11 are installed on the inner wall of the outer ring 1 at one side of each roller 3, forming a discharge chamber 12, and an appropriate amount of solid lubricating oil is placed into the discharge chamber 12. The extrusion section 6 is installed: the mounting box 61 is placed at the bottom of the outer ring 1, and the push plate 63 is placed inside the mounting box 61, with one end of the support spring 64 connected to the side of the push plate 63 and the other end connected to the inner wall of the mounting box 61. One end of the S-shaped rod 62 is fixed to the side of the push plate 63, and the other end is connected to the push plate 5 inside the discharge chamber 12. The air bladder 65 is placed between the inner wall of the mounting box 61 and the push plate 63, with the air nozzle 66 extending to the outside of the mounting box 61. Installation of Cleaning Section 9: Install the mounting plate 93 in the placement groove 41 on the inner wall of the retainer 4, located on one side of the roller 3. Install one end of the return spring 92 on the end of the mounting plate 93 and the other end on the scraper 91. Adjust the position of the scraper 91 so that it contacts the roller 3. Installation of Base 7: Install the base 7 at the bottom of the outer ring 1, ensuring that the chip discharge port 71 is unobstructed. Installation of Pressure Ring 8 and Related Fixing Components: Place the pressure ring 8 on top of the outer ring 1, so that the bottom inclined surface of the pressure plate 81 contacts the top inclined surface of the scraper 91, squeezing the scraper 91 to disengage it from the roller 3. Rotate the limiting plate 14 to the top of the mounting plate 82, pass the bolt 16 through the mounting plate 82 and thread it with the nut 15 to fix the mounting plate 82. Install the installed high-temperature self-lubricating bearing in the corresponding position of the equipment and start the equipment to make the bearing start running. The roller 3 rolls between the inner ring 2 and the outer ring 1 to realize the rotation function of the equipment. Normal situation: During the operation of the bearing, when lubrication is required, the push plate 63 in the mounting box 61 can be moved by external power. When the pusher plate 63 moves, it drives the pusher plate 5 to move in the discharge chamber 12 through the transmission action of the S-shaped rod 62. The pusher plate 5 pushes the solid lubricating oil through the discharge groove 13 to be squeezed onto the surface of the roller 3, thereby lubricating the roller 3 and reducing the friction between the roller 3 and the inner ring 2 and the outer ring 1.High-temperature conditions: When the bearing operates for a long time and the temperature rises, the gas inside the air bladder 65 expands due to heat, pushing the pusher plate 63 to move within the mounting box 61. The pusher plate 63 drives the pusher plate 5 via the S-shaped rod 62 to squeeze solid lubricating oil onto the surface of the roller 3, automatically achieving lubrication and preventing bearing wear and failure due to high temperature.

[0032] During bearing operation, the scraper 91 maintains close contact with the surface of the roller 3 under the action of the return spring 92, cleaning the lubricating oil that has been used for a long time on the surface of the roller 3, preventing the lubricating oil from accumulating and deteriorating, which could damage the bearing. The cleaned lubricating oil falls into the base 7 and is discharged through the chip discharge port 71, keeping the inside of the bearing clean and dry. When it is necessary to clean the scraper 91 or adjust its contact with the roller 3, first loosen the bolt 16, rotate the limiting plate 14 to disengage it from the top of the mounting plate 82, and then remove the pressure ring 8, so that the scraper 91 returns to the contact state with the roller 3 under the action of the return spring 92. At this time, the scraper 91 can be cleaned or adjusted. After cleaning or adjustment, place the pressure ring 8 back on the top of the outer ring 1, so that the pressure plate 81 squeezes the scraper 91 to disengage it from the roller 3, rotate the limiting plate 14 to the top of the mounting plate 82, and tighten the bolt 16 to fix the mounting plate 82. Regularly check the remaining amount of solid lubricating oil in the discharge chamber 12. When the lubricating oil is insufficient, open the corresponding opening on the outer ring 1 and add an appropriate amount of solid lubricating oil to the discharge chamber 12, either in the manner specified in the design, to ensure continuous lubrication of the bearing. Regularly inspect all components of the bearing for wear, damage, or loosening. If severe wear of the roller 3, deformation of the cage 4, or failure of the support spring 64 is found, replace the corresponding components promptly to ensure normal operation and service life of the bearing.

[0033] Finally, it should be noted that the basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this specification. Such modifications, improvements, and corrections are suggested in this specification, and therefore remain within the spirit and scope of the exemplary embodiments of this specification. Furthermore, this specification uses specific terms to describe embodiments of this specification. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this specification can be appropriately combined. Moreover, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this specification are not intended to limit the order of the processes and methods of this specification.

[0034] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-temperature self-lubricating bearing, comprising an inner ring (2), characterized in that, The inner ring (2) has an outer ring (1) with a cavity on its surface. Multiple rollers (3) are installed between the outer ring (1) and the inner ring (2), and the arc surface of the rollers (3) contacts the outer ring (1) and the inner ring (2). A retainer (4) is installed on the surface of the inner ring (2). The retainer (4) is used to divide the rollers (3). Two dividing plates (11) are provided on one side of each roller (3) on the inner wall of the cavity. A discharge cavity (12) is formed between the two dividing plates (11). The discharge cavity (12) is used to solidify the material. For the placement of solid lubricating oil, a movable pusher plate (5) is provided on the inner bottom wall of the discharge chamber (12). The pusher plate (5) is used to push the solid lubricating oil. A discharge groove (13) is provided in the cavity located at the discharge chamber (12). The discharge groove (13) is positioned corresponding to the roller (3). It is used for the solid lubricating oil to be squeezed out by the pusher plate (5) and then contact the surface of the roller (3) for lubrication. A squeezing part (6) is provided at the bottom of the outer ring (1). The squeezing part (6) is used to push the pusher plate (5).

2. The high-temperature self-lubricating bearing according to claim 1, characterized in that, The extrusion section (6) includes a mounting box (61) located at the bottom of the outer ring (1). A movable push plate (63) is provided on the inner wall of the mounting box (61). An S-shaped rod (62) is installed on the side of the push plate (63). The other end of the S-shaped rod (62) is connected to the push plate (5) and is used to drive the push plate (5) to move synchronously when the push plate (63) moves.

3. The high-temperature self-lubricating bearing according to claim 2, characterized in that, A support spring (64) is installed on the side of the push plate (63). The end of the support spring (64) is connected to the inner wall of the mounting box (61). An air bladder (65) is provided between the inner wall of the mounting box (61) and the push plate (63). An air nozzle (66) is installed on the side of the air bladder (65). The air nozzle (66) extends to the outside of the mounting box (61). The air bladder (65) is used to expand due to thermal expansion when the bearing operates for a long time and the temperature rises. It is used to push the push plate (63) and thereby drive the pusher plate (5) to extrude solid lubricating oil.

4. The high-temperature self-lubricating bearing according to claim 1, characterized in that, The inner wall of the retainer (4) is provided with a placement groove (41) on one side of the roller (3). A cleaning part (9) is provided in the placement groove (41) for cleaning the lubricating oil on the surface of the roller (3) that has been used for a long time.

5. A high-temperature self-lubricating bearing according to claim 1, characterized in that, The bottom of the outer ring (1) is equipped with a base (7), which is used to hold the lubricating oil after cleaning. The surface of the base (7) is provided with a chip discharge port (71), which is used to discharge the lubricating oil after cleaning.

6. A high-temperature self-lubricating bearing according to claim 1, characterized in that, The cleaning section (9) includes a mounting plate (93) installed on the inner wall of the placement groove (41). A return spring (92) is installed at the end of the mounting plate (93). A scraper (91) is installed on one side of the return spring (92). The position of the scraper (91) is adjustable and is used to clean the roller (3) after being adjusted to the roller (3).

7. A high-temperature self-lubricating bearing according to claim 6, characterized in that, The top of the outer ring (1) is provided with a pressure ring (8), and the bottom of the pressure ring (8) is provided with a pressure plate (81). The bottom of the pressure plate (81) and the top of the scraper (91) are both set as inclined surfaces, so that when the pressure ring (8) is placed on the top of the outer ring (1), the pressure plate (81) can squeeze the scraper (91) to separate the scraper (91) from the roller (3).

8. A high-temperature self-lubricating bearing according to claim 7, characterized in that, The surface of the pressure ring (8) is fitted with an mounting plate (82), which is used to fix the pressure ring (8) after it is placed on top of the outer ring (1). The top of the outer ring (1) is fitted with a rotatable limiting plate (14), which is used to limit the mounting plate (82) after it is rotated to the top of the mounting plate (82).

9. A high-temperature self-lubricating bearing according to claim 8, characterized in that, A nut (15) is installed on the top of the limiting plate (14), and a bolt (16) is threadedly connected to the inner wall of the nut (15). The bolt (16) is connected through the limiting plate (14) and the mounting plate (82).

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