Ceramic bearing with high temperature resistance and corrosion resistance

Abstract

The utility model relates to the technical field of bearings, in particular to a high-temperature-resistant and corrosion-resistant ceramic bearing which comprises an inner ring, an outer ring and a dust cover, a retainer is arranged between the inner ring and the outer ring, a roller is arranged in the retainer, the dust cover is fixedly connected with the inner ring, a plurality of sliding grooves are formed in the top of the dust cover, and balls slide in the sliding grooves. The bottom face of the sliding groove is an inclined face, the depth of one end of the sliding groove is larger than the diameter, the other end of the sliding groove is smaller than the diameter of the ball, the top of the dustproof cover is rotationally connected with a plurality of cooling fins, the cooling fins are evenly distributed around the center of the dustproof cover, and the sliding groove and the cooling holes are located below the dustproof cover. By means of the cooling fins, the balls and the dustproof cover, a large amount of air is blown into the bearing in the rotating process of the bearing to take away heat in the rotating process of the bearing, after the bearing stops rotating, the cooling fins and the dustproof cover are attached to protect the interior of the bearing, and the temperature of the bearing during working is effectively reduced.

Description

Technical Field

[0001] This utility model relates to a bearing, and more particularly to a ceramic bearing with high temperature and corrosion resistance, belonging to the field of bearing technology. Background Technology

[0002] Ceramic bearings are widely used in aerospace, high-end machine tools, chemical industry and many other fields due to their high temperature resistance and corrosion resistance. With the continuous increase in equipment operating speed, the friction between the rollers and the inner ring of the ceramic bearing intensifies during operation, which generates a large amount of heat. Excessive temperature will affect the mechanical performance of the ceramic bearing. Most existing ceramic bearings use natural heat dissipation, which has low heat dissipation efficiency. When facing extreme conditions such as high temperature and high speed, it is difficult to dissipate a large amount of heat quickly, which shortens the service life of the bearing and reduces the operating efficiency of the equipment.

[0003] Therefore, it is urgent to improve ceramic bearings with high temperature and corrosion resistance to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a high-temperature and corrosion-resistant ceramic bearing. Through heat sinks, balls, and a dust cover, a large amount of air is blown into the bearing during rotation, carrying away the heat generated during operation. After the bearing stops rotating, the heat sinks and dust cover adhere to protect the inside of the bearing. This not only effectively reduces the operating temperature of the bearing, reducing wear and the probability of failure, but also prevents external impurities from contaminating the inside of the bearing, thereby greatly increasing the service life and actual operating time of the bearing.

[0005] To achieve the above objectives, the main technical solution adopted by this utility model includes: an inner ring, an outer ring, and a dust cover. A retainer is provided between the inner ring and the outer ring, and a roller is provided inside the retainer. The dust cover is fixedly connected to the inner ring. Multiple sliding grooves are provided on the top of the dust cover, and ball bearings slide in the sliding grooves. Multiple heat dissipation holes are provided on the top of the dust cover. The bottom surface of the sliding groove is an inclined surface. The depth of one end of the sliding groove is greater than the diameter of the ball bearing, and the depth of the other end of the sliding groove is smaller than the diameter of the ball bearing. Multiple heat dissipation fins are rotatably connected to the top of the dust cover. The multiple heat dissipation fins are evenly distributed around the center of the dust cover. The sliding grooves and heat dissipation holes are located below the dust cover.

[0006] Preferably, the inner ring has multiple heat dissipation grooves, which are arranged in an arc around the axis of the inner ring.

[0007] Preferably, the cage surface has multiple ventilation grooves, the roller is a cylindrical roller, and the roller has through holes at both ends, the through holes corresponding to the ventilation grooves.

[0008] Preferably, the groove is arc-shaped, and the center of the groove coincides with the center of the inner ring.

[0009] Preferably, the dust cover is provided with a limiting block near the heat sink, and the limiting block is used to limit the rotation angle of the heat sink.

[0010] Preferably, both the inner ring and the outer ring are ceramic rings, and the roller is a hollow ceramic column.

[0011] This utility model has at least the following beneficial effects:

[0012] 1. Through heat sinks, ball bearings, and dust covers, a large amount of air is blown into the bearing during rotation, carrying away the heat generated during operation. After the bearing stops rotating, the heat sinks and dust covers adhere to protect the inside of the bearing. This not only effectively reduces the bearing's operating temperature and the probability of wear and failure, but also prevents external impurities from contaminating the inside of the bearing, thereby greatly increasing the bearing's service life and actual operating time. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0014] Figure 1 A cross-sectional structural schematic diagram provided for this utility model;

[0015] Figure 2 A schematic diagram of the closed heat sink provided by this utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the slide groove provided by this utility model;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the heat dissipation groove provided by this utility model;

[0018] Figure 5 A schematic diagram of the cage structure provided by this utility model.

[0019] In the diagram, 1 is the inner ring; 2 is the outer ring; 3 is the dust cover; 4 is the cage; 5 is the roller; 6 is the slide groove; 7 is the ball bearing; 8 is the heat dissipation hole; 9 is the heat sink; 10 is the heat dissipation groove; 11 is the ventilation groove; 12 is the through hole; and 13 is the limit block. Detailed Implementation

[0020] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0021] like Figures 1-5 As shown, the high-temperature and corrosion-resistant ceramic bearing provided in this embodiment includes an inner ring 1, an outer ring 2, and a dust cover 3. A cage 4 is provided between the inner ring 1 and the outer ring 2, and rollers 5 are provided inside the cage 4. The dust cover 3 is fixedly connected to the inner ring 1. Multiple grooves 6 are provided on the top of the dust cover 3, and balls 7 slide in the grooves 6. Multiple heat dissipation holes 8 are provided on the top of the dust cover 3. The bottom surface of the grooves 6 is inclined. One end of the groove 6 is deeper than the diameter of the balls 7, and the other end of the groove 6 is smaller than the diameter of the balls 7. Multiple heat sinks 9 are rotatably connected to the top of the dust cover 3, and the multiple heat sinks 9 are evenly distributed around the center of the dust cover 3. The slide groove 6 and the heat dissipation hole 8 are located below the dust cover 3. The slide groove 6 is arc-shaped, and its center coincides with the center of the inner ring 1. The dust cover 3 has a limiting block 13 near the heat sink 9. The limiting block 13 is used to limit the rotation angle of the heat sink 9. The inner ring 1 and the outer ring 2 are both ceramic rings, and the rollers 5 are hollow ceramic pillars. During the operation of the bearing, the inner ring 1 and the outer ring 2 are the main components for bearing and transmitting load. The cage 4 maintains the relative position of the rollers 5, so that the rollers 5 are evenly distributed and the bearing runs smoothly. The bearing is used vertically. When the inner ring 1 rotates from rest to accelerated rotation, the balls 7 As the ball bearing slides along the groove 6, its bottom surface is inclined, causing the ball 7 to move upwards. The ball 7 lifts the heatsink 9, which then flips upwards due to air resistance. When the heatsink 9 is stopped by the limit block 13, it reaches its maximum angle and is in an inclined position. During its high-speed rotation, the heatsink 9 cuts through the air, causing it to flow into the bearing. As the inner ring 1 decelerates from its rotating state to a stop, the ball 7 continues to rotate forward due to inertia. When the ball 7 slides to the other end of the groove 6, it no longer contacts the heatsink 9. After the inner ring 1 stops rotating, the heat sink 9 adheres to the top of the dust cover 3 under the action of gravity, preventing dust from falling into the bearing during equipment shutdown. Through the heat sink 9, ball bearing 7, and dust cover 3, a large amount of air is blown into the bearing during rotation, carrying away the heat generated during bearing operation. After the bearing stops rotating, the heat sink 9 and dust cover 3 adhere to protect the inside of the bearing, which not only effectively reduces the bearing's operating temperature and the probability of wear and failure, but also prevents external impurities from contaminating the inside of the bearing, thereby greatly increasing the bearing's service life and actual operating time.

[0022] Among them, such as Figure 4 as well as Figure 5As shown, the inner ring 1 has multiple heat dissipation grooves 10, which are arranged in an arc around the axis of the inner ring 1. The surface of the cage 4 has multiple ventilation grooves 11. The rollers 5 are cylindrical rollers with through holes 12 at both ends. The through holes 12 correspond to the ventilation grooves 11, and the direction of the ventilation grooves 11 is consistent with the rotation direction of the inner ring 1. When the inner ring 1 rotates, air carries away the heat of the inner ring 1 from the top of the inner ring 1 through the ventilation grooves 11. The ventilation grooves 11 on the surface of the cage 4 reduce weight and increase air circulation space. The rollers 5 are hollow rollers, which allows air to form convection between the ventilation grooves 11 of the cage 4 and the through holes 12 at both ends of the rollers 5, promoting air convection and enhancing the heat dissipation effect on the cage 4 and rollers 5, effectively reducing their operating temperature.

[0023] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0024] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0025] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A high-temperature and corrosion-resistant ceramic bearing, comprising an inner ring (1), an outer ring (2), and a dust cover (3), characterized in that: A retainer (4) is provided between the inner ring (1) and the outer ring (2). A roller (5) is provided in the retainer (4). The dust cover (3) is fixedly connected to the inner ring (1). The top of the dust cover (3) is provided with multiple sliding grooves (6). A ball (7) slides in the sliding groove (6). The top of the dust cover (3) is provided with multiple heat dissipation holes (8). The bottom surface of the sliding groove (6) is an inclined surface. The depth of one end of the sliding groove (6) is greater than the diameter of the ball (7). The other end of the sliding groove (6) is smaller than the diameter of the ball (7). The top of the dust cover (3) is rotatably connected with multiple heat sinks (9). The multiple heat sinks (9) are evenly distributed around the center of the dust cover (3). The sliding groove (6) and the heat dissipation holes (8) are located below the dust cover (3).

2. The high-temperature and corrosion-resistant ceramic bearing according to claim 1, characterized in that: The inner ring (1) is provided with a plurality of heat dissipation grooves (10), which are arranged in an arc around the axis of the inner ring (1).

3. A ceramic bearing with high temperature and corrosion resistance according to claim 1, characterized in that: The cage (4) has multiple ventilation grooves (11) on its surface. The roller (5) is a cylindrical roller (5). The roller (5) has through holes (12) at both ends. The through holes (12) correspond to the ventilation grooves (11).

4. A ceramic bearing with high temperature and corrosion resistance according to claim 1, characterized in that: The groove (6) is arc-shaped, and the center of the groove (6) coincides with the center of the inner ring (1).

5. A ceramic bearing with high temperature and corrosion resistance according to claim 1, characterized in that: The dust cover (3) is provided with a limiting block (13) near the heat sink (9), and the limiting block (13) is used to limit the rotation angle of the heat sink (9).

6. A ceramic bearing with high temperature and corrosion resistance according to claim 1, characterized in that: The inner ring (1) and the outer ring (2) are both ceramic rings, and the roller (5) is a hollow ceramic column.

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