High-temperature-resistant self-lubricating sliding bearing

Abstract

A bearing cover is arranged at the upper end of a bearing seat, arc-shaped metal frameworks are arranged in the middle of the inner side face of the bearing seat and the middle of the inner side face of the bearing cover, self-lubricating layers are fixedly connected to the inner side faces of the arc-shaped metal frameworks, a lower bearing bush is arranged on the inner side of the bearing seat, and the lower bearing bush is arranged on the inner side of the bearing seat. A lower bearing bush is arranged on the inner side of the bearing cover, a lower bearing bush is arranged on the inner side of the bearing cover, a lower bearing bush is arranged on the inner side of the bearing cover, an upper bearing bush is arranged on the inner side of the bearing cover, and the lower bearing bush and the upper bearing bush are attached to the self-lubricating layer on the upper side and the self-lubricating layer on the lower side respectively. Graphite and molybdenum disulfide have excellent high-temperature self-lubricating performance, PTFE can improve the wear resistance and formability of materials, then the self-lubricating effect of the sliding bearing can be effectively improved, the semicircular detachable structure is more convenient to disassemble, assemble and replace, and the disassembly and replacement cost of the abraded sliding bearing is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sliding bearing technology, specifically a high-temperature resistant self-lubricating sliding bearing. Background Technology

[0002] As a key component in mechanical transmission, sliding bearings mainly support rotating shafts and reduce frictional losses between shafts and bearings. They are widely used in metallurgy, chemical industry, aerospace and other fields.

[0003] A high-temperature resistant sliding bearing for a high-temperature conveyor roller track in a heating furnace, disclosed in CN215521674U, is described. This device features a self-lubricating insert made of graphite, which provides excellent self-lubrication. It offers good lubrication even when lubricating oil is rapidly depleted and replenished in a timely manner. However, this self-lubricating insert is located inside the bearing housing and bearing cover, and its position relative to the outer surface of the bearing bush is point-like. Even when the bearing bush rotates, the connection remains linear, leading to significant wear on the non-contact areas. Furthermore, although this device includes a lubricating oil addition structure, it is not suitable for operation in high-temperature environments, resulting in a significant reduction in the service life of the sliding bearing. Therefore, a high-temperature resistant self-lubricating sliding bearing needs to be designed to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a high-temperature resistant self-lubricating sliding bearing to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature resistant self-lubricating sliding bearing, comprising a bearing housing and a bearing cover tightly connected to the upper end of the bearing housing, wherein the bearing housing is provided with a bearing cover at the upper end, and an arc-shaped metal frame is provided at the middle position of the inner side of the bearing housing and the bearing cover, wherein a self-lubricating layer is fixedly connected to the inner side of the arc-shaped metal frame, a lower bearing shell is provided on the inner side of the bearing housing, and an upper bearing shell is provided on the inner side of the bearing cover, wherein the lower bearing shell and the upper bearing shell are respectively in contact with the self-lubricating layers on the upper and lower sides;

[0006] The outer edges of the lower and upper bearing shells are sealed with high-temperature resistant sealing rings.

[0007] Preferably, locking bolts are provided on both the left and right sides of the inside of the bearing cover, and the locking bolts are spirally connected to the bearing seat. Threaded holes are provided on both the left and right sides of the upper end face of the bearing seat.

[0008] Preferably, mounting holes are provided at both ends of the bearing housing.

[0009] Preferably, both the bearing housing and the bearing cover have U-shaped grooves on their inner sides, and the inner side of the U-shaped grooves has limiting protrusions. The limiting protrusions are fixedly connected to the bearing housing and the bearing cover respectively, and the limiting protrusions are slidably connected to the arc-shaped metal frame. A retaining groove is provided at the middle position of the arc-shaped metal frame.

[0010] Preferably, both the lower and upper bearing bushes have lubrication grooves on their outer surfaces.

[0011] Preferably, the front and rear ends of the bearing housing and bearing cover are fixedly connected with side wings, the side wings are sealed to the high-temperature resistant sealing ring, and the inner side of the side wings is provided with a limiting groove.

[0012] Preferably, the self-lubricating layer is a composite material composed of PTFE, graphite, and molybdenum disulfide.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This high-temperature resistant self-lubricating sliding bearing features an arc-shaped metal skeleton that axially limits the self-lubricating layer. The self-lubricating layer is constructed using a composite system of PTFE, graphite, and molybdenum disulfide. Graphite and molybdenum disulfide exhibit excellent high-temperature self-lubricating properties, while PTFE enhances the material's wear resistance and formability, thus effectively improving the self-lubricating effect of the sliding bearing. Furthermore, the semi-circular, detachable structure facilitates disassembly and replacement, reducing the cost of replacing worn sliding bearings.

[0015] 2. This high-temperature resistant self-lubricating sliding bearing, through the fit between the side wing and the lower and upper bearing shells, can limit the movement of the upper and lower bearing shells. Furthermore, the high-temperature resistant sealing rings can be embedded between the side wing, the lower bearing shell, and the upper bearing shell respectively, with an interference fit, which improves the sealing performance between the lower bearing shell, the upper bearing shell, the bearing housing, and the bearing cover. Moreover, the high-temperature resistant sealing rings made of fluororubber can operate in high-temperature environments, preventing external high-temperature dust and impurities from entering the bearing interior, while reducing the loss of the medium in the self-lubricating layer. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the installation structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the installation structure of the bearing housing of this utility model;

[0018] Figure 3 This is a bottom view of the mounting structure of the bearing cover of this utility model;

[0019] Figure 4 This is a schematic diagram of the installation structure of the lower bearing and upper bearing of this utility model.

[0020] In the diagram: 1. Bearing housing; 2. Bearing cover; 3. Arc-shaped metal frame; 4. Self-lubricating layer; 5. Lower bearing shell; 6. Upper bearing shell; 7. High-temperature resistant sealing ring; 8. Locking bolt; 9. Threaded hole; 10. Mounting hole; 11. U-shaped groove; 12. Limiting protrusion; 13. Lubrication groove; 14. Side wing; 15. Limiting groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please refer to Figure 1-4 As shown, this utility model provides a high-temperature resistant self-lubricating sliding bearing, including a bearing housing 1 and a bearing cover 2 tightly connected to the upper end of the bearing housing 1. The bearing cover 2 is provided at the upper end of the bearing housing 1. An arc-shaped metal frame 3 is provided at the middle position of the inner side of the bearing housing 1 and the bearing cover 2. A self-lubricating layer 4 is fixedly connected to the inner side of the arc-shaped metal frame 3. The arc-shaped metal frame 3 can perform axial limiting treatment on the self-lubricating layer 4. The inner side of the bearing housing 1 is provided with a lower bearing shell 5, and the inner side of the bearing cover 2 is provided with an upper bearing shell 6. The lower bearing shell 5 and the upper bearing shell 6 are respectively in contact with the upper and lower self-lubricating layers 4. The self-lubricating layer 4 can be located between the bearing housing, the bearing cover, the lower bearing shell and the upper bearing shell to form a self-lubricating structure and improve the self-lubricating effect.

[0023] High-temperature resistant sealing rings 7 are sealed at the outer edges of the lower bearing shell 5 and the upper bearing shell 6. Through the function of the high-temperature resistant sealing rings 7, they can be embedded between the side wing 14, the lower bearing shell 5 and the upper bearing shell 6 respectively, and are interference fit, which improves the sealing performance between the lower bearing shell 5, the upper bearing shell 6, the bearing housing 1 and the bearing cover 2. In addition, the high-temperature resistant sealing rings 7 made of fluororubber can operate in high-temperature environments, preventing external high-temperature dust and impurities from entering the bearing, while reducing the loss of the medium in the self-lubricating layer 4.

[0024] Specifically, locking bolts 8 are provided on both the left and right sides of the inside of the bearing cover 2. The locking bolts 8 are screwed to the bearing seat 1. Threaded holes 9 are provided on both the left and right sides of the upper end face of the bearing seat 1. The locking bolts 8 can be connected to the threaded holes 9 to achieve a fixed connection between the bearing cover 2 and the bearing seat 1.

[0025] Specifically, mounting holes 10 are provided at both the left and right ends of the bearing housing 1, through which the sliding bearing can be installed on the required installation equipment.

[0026] Specifically, U-shaped grooves 11 are provided on the inner sides of both the bearing housing 1 and the bearing cover 2. Limiting protrusions 12 are provided on the inner side of the U-shaped grooves 11. The limiting protrusions 12 are fixedly connected to the bearing housing 1 and the bearing cover 2 respectively. The limiting protrusions 12 are slidably connected to the arc-shaped metal frame 3. A slot is provided at the middle position of the arc-shaped metal frame 3. The arc-shaped metal frame 3 can be installed in the U-shaped grooves 11 by the action of the limiting protrusions 12, thereby enabling circumferential limiting treatment of the self-lubricating layer 4.

[0027] Specifically, lubrication grooves 13 are provided on the outer surfaces of both the lower bearing 5 and the upper bearing 6, so that the self-lubricating medium can be retained in the lubrication grooves 13, thereby improving the service life of lubrication.

[0028] Specifically, the front and rear ends of the bearing housing 1 and the bearing cover 2 are fixedly connected with side wings 14. The side wings 14 are sealed to the high-temperature resistant sealing ring 7. The inner side of the side wings 14 is provided with a limiting groove 15, so that the high-temperature resistant sealing ring 7 can be interference-fitted with the side wings 14, the lower bearing shell 5 and the upper bearing shell 6, thereby improving the sealing effect on the sliding bearing.

[0029] Specifically, the self-lubricating layer 4 is a composite material made of PTFE, graphite and molybdenum disulfide. By using a composite system of PTFE, graphite and molybdenum disulfide in the self-lubricating layer 4, the graphite and molybdenum disulfide have excellent high-temperature self-lubricating properties, and PTFE can improve the wear resistance and formability of the material, thereby effectively improving the self-lubricating effect of the sliding bearing.

[0030] Working Principle: This utility model is a high-temperature resistant self-lubricating sliding bearing. When in use, the mounting bolts are inserted into the mounting holes 10 and connected to the equipment using the sliding bearing. The locking bolts 8 secure the bearing cover 2 to the bearing seat 1. During use, the limiting protrusions 12 allow the arc-shaped metal frame 3 to be installed in the U-shaped groove 11, thus providing circumferential limiting for the self-lubricating layer 4. The self-lubricating layer 4 is constructed using a composite system of PTFE, graphite, and molybdenum disulfide. Graphite and molybdenum disulfide possess excellent high-temperature self-lubricating properties, while PTFE enhances the material's wear resistance and... The moldability effectively enhances the self-lubricating effect of the sliding bearing, allowing the worn self-lubricating medium to remain in the lubrication groove 13, thus extending the lubrication service life. Furthermore, the semi-circular detachable structure facilitates disassembly and replacement, reducing the cost of replacing worn sliding bearings. Additionally, the high-temperature resistant sealing ring 7 can be embedded between the side wing 14, the lower bearing shell 5, and the upper bearing shell 6 with an interference fit, improving the sealing performance between the lower bearing shell 5, the upper bearing shell 6, the bearing housing 1, and the bearing cover 2. Moreover, the high-temperature resistant sealing ring 7 made of fluororubber can operate in high-temperature environments, preventing external high-temperature dust and impurities from entering the bearing interior, while also reducing the loss of the medium in the self-lubricating layer 4.

[0031] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0032] 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 resistant self-lubricating sliding bearing, comprising a bearing housing (1) and a bearing cap (2) tightly connected to the upper end of the bearing housing (1), characterized in that: The bearing housing (1) is provided with a bearing cover (2) at its upper end. An arc-shaped metal frame (3) is provided at the middle position of the inner side of the bearing housing (1) and the bearing cover (2). A self-lubricating layer (4) is fixedly connected to the inner side of the arc-shaped metal frame (3). A lower bearing shell (5) is provided on the inner side of the bearing housing (1). An upper bearing shell (6) is provided on the inner side of the bearing cover (2). The lower bearing shell (5) and the upper bearing shell (6) are respectively attached to the self-lubricating layer (4) on the upper and lower sides. High-temperature resistant sealing rings (7) are sealed at the outer edge of the lower bearing (5) and the upper bearing (6).

2. The high-temperature resistant self-lubricating sliding bearing according to claim 1, characterized in that: Locking bolts (8) are provided on both the left and right sides of the inside of the bearing cover (2). The locking bolts (8) are spirally connected to the bearing seat (1). Threaded holes (9) are provided on both the left and right sides of the upper end face of the bearing seat (1).

3. The high-temperature resistant self-lubricating sliding bearing according to claim 1, characterized in that: Mounting holes (10) are provided at both the left and right ends of the bearing housing (1).

4. The high-temperature resistant self-lubricating sliding bearing according to claim 1, characterized in that: The inner sides of the bearing seat (1) and the bearing cover (2) are provided with U-shaped grooves (11). The inner side of the U-shaped groove (11) is provided with a limiting protrusion (12). The limiting protrusion (12) is fixedly connected to the bearing seat (1) and the bearing cover (2) respectively. The limiting protrusion (12) is slidably connected to the arc-shaped metal frame (3). A slot is provided at the middle position of the arc-shaped metal frame (3).

5. The high-temperature resistant self-lubricating sliding bearing according to claim 1, characterized in that: Lubrication grooves (13) are provided on the outer surfaces of both the lower bearing (5) and the upper bearing (6).

6. The high-temperature resistant self-lubricating sliding bearing according to claim 1, characterized in that: The front and rear ends of the bearing housing (1) and bearing cover (2) are fixedly connected with side wings (14), and the side wings (14) are sealed to the high temperature resistant sealing ring (7). The inner side of the side wings (14) is provided with a limiting groove (15).

7. The high-temperature resistant self-lubricating sliding bearing according to claim 1, characterized in that: The self-lubricating layer (4) is a composite material made of PTFE, graphite and molybdenum disulfide.

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