Wear-resistant and high-temperature-resistant bearing bush

Abstract

The utility model discloses a wear-resistant and high-temperature-resistant bearing bush, and relates to the technical field of sliding bearings, in particular to a wear-resistant and high-temperature-resistant bearing bush, which is mounted on a sliding bearing and comprises an upper bearing bush and a lower bearing bush, and the upper bearing bush and the lower bearing bush are buckled to form an integrally annular barrel structure; a plurality of rows of oil holes arranged in the axial direction are formed in the middle of the barrel structure. According to the bearing bush, the multiple rows of axially arranged oil holes are formed in the upper bearing bush and the lower bearing bush of the bearing bush, the cavities where the oil holes are located can store a large amount of lubricating oil, the temperature environment of the bearing bush can be effectively adjusted along with flowing of the lubricating oil on the inner wall and the outer wall of the bearing bush, and the problems of abrasion aggravation and the like caused in the high-temperature environment are solved; the wear resistance and the service life of the bearing bush are greatly improved.

Description

Technical Field

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

[0002] In the operation of sliding bearings, the bearing shell, as a key component, directly affects the service life and operational stability of the entire bearing. Existing bearing shell technologies, such as the utility model patent with patent number 201921998779.5, which describes a highly wear-resistant bearing shell, propose a technical solution to improve the wear resistance and lubrication performance of the bearing shell by setting up structures such as a friction-reducing layer, lubricant, and oxide film. This solution involves setting lubrication holes in the inner groove of the bearing shell and placing lubricant and an oxide film inside the lubrication holes, allowing the lubricant to flow out at high temperatures, thereby achieving lubrication of the inner groove of the bearing shell. However, this technical solution still has some problems in practical applications.

[0003] First, the distribution and structural design of the lubrication holes in this design are relatively simple, failing to achieve uniform lubrication of the bearing's inner groove, resulting in insufficient local lubrication and affecting the overall performance of the bearing. Furthermore, existing bearings are prone to accelerated wear and lubricant failure under high-temperature environments, which not only reduces the bearing's service life. Therefore, designing a new type of bearing that can effectively solve the above problems is a technical problem urgently needing to be solved by those skilled in the art. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a wear-resistant and high-temperature resistant bearing bush, which solves the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant and high-temperature resistant bearing bush, which is installed on a sliding bearing. The wear-resistant and high-temperature resistant bearing bush includes an upper bearing bush and a lower bearing bush. The upper bearing bush and the lower bearing bush are joined together to form an integral annular cylindrical structure. Multiple rows of axially arranged oil holes are provided in the middle of the cylindrical structure. Each oil hole in each row is arranged sequentially along the circumferential direction of the cylindrical structure, and the oil holes penetrate the wall of the cylindrical structure. The diameter of the oil hole at one end near the axis of the cylindrical structure is smaller than the diameter at the other end. Each row of oil holes includes multiple first oil holes and multiple second oil holes.

[0008] Optionally, the oil hole is frustum-shaped, and the tip of the oil hole faces the axis of the cylindrical structure.

[0009] Optionally, a first oil groove is formed on the outer side wall of the upper bearing along the axial direction, and at least one second oil groove is formed on the outer side wall of the upper bearing along the circumferential direction, and the first oil groove and the second oil groove are connected; a third oil groove is formed on the inner side wall of the upper bearing along the axial direction, and at least one fourth oil groove is formed on the inner side wall of the upper bearing along the circumferential direction, and the third oil groove and the fourth oil groove are connected.

[0010] Optionally, the first oil groove is located at the highest point on the outer side wall of the upper bearing, and the third oil groove is located at the highest point on the inner side wall of the upper bearing. The upper bearing has a drain hole that penetrates its wall and is connected to the first oil groove and the third oil groove respectively.

[0011] Optionally, a seventh oil groove is formed on the inner side wall of the lower bearing along the axial direction, and an eighth oil groove is formed on the inner side wall of the lower bearing along the circumferential direction, and the seventh oil groove and the eighth oil groove are connected.

[0012] Optionally, a fifth oil groove is provided on the outer side wall of the lower bearing along the axial direction, and a sixth oil groove is provided on the outer side wall of the lower bearing along the circumferential direction, and the fifth oil groove and the sixth oil groove are connected.

[0013] Optionally, the ratio of the area of ​​each oil drain hole to the area of ​​the outer wall of the cylinder structure is one-third to one-quarter.

[0014] (III) Beneficial Effects

[0015] This utility model provides a wear-resistant and high-temperature resistant bearing bush, which has the following beneficial effects:

[0016] 1. This wear-resistant and high-temperature resistant bearing bush features multiple rows of axially arranged oil holes on both the upper and lower bearing bushes. These oil holes are frustoconical in shape, with their tips pointing towards the axis of the cylindrical structure. This design allows for uniform distribution of lubricating oil within the bearing bush. During operation, the lubricating oil flows more smoothly to the inner wall of the bearing bush through the special structure of the oil holes, forming a uniform oil film and effectively reducing friction between the bearing bush and the rotating shaft. Simultaneously, the frustoconical shape of the oil holes, with their tips pointing towards the axis of the cylindrical structure, facilitates faster flow of lubricating oil from the outside to the inside. The small inner diameter of the oil holes effectively reduces or prevents oil film rupture or loss, ensuring the continuity of the oil film. Compared to existing technologies, this design not only improves lubrication efficiency but also avoids the problem of insufficient local lubrication, significantly extending the service life of the bearing bush. Furthermore, the special structure of the oil holes can automatically adjust the flow rate of lubricating oil according to the operating speed and temperature of the bearing bush, further improving the adaptability and reliability of lubrication and enhancing its wear-resistant and high-temperature resistant properties.

[0017] 2. By setting multiple rows of axially arranged oil holes on the upper and lower bearing shells, the cavity where each oil hole is located can store a large amount of lubricating oil. As the lubricating oil flows on the inner and outer walls of the bearing shell, it can effectively regulate the temperature environment of the bearing shell, avoid problems such as accelerated wear caused by high temperature environment, and greatly improve the wear resistance and service life of the bearing shell.

[0018] 3. This utility model incorporates multiple oil grooves on the inner and outer walls of the bearing bush, including a first, second, third, fourth, fifth, sixth, seventh, and eighth oil grooves. These grooves are interconnected, forming a complex oil circuit system. This design not only increases the storage capacity of lubricating oil but also allows the lubricating oil to form two oil films on the inner and outer walls of the bearing bush, thereby further reducing friction between the bearing bush and the rotating shaft. Simultaneously, the multi-layered oil film effectively absorbs and disperses the heat generated during bearing bush operation, lowering the bearing bush temperature and enhancing its high-temperature resistance. This effectively solves the problems of easy wear and lubricating oil failure in existing technologies at high temperatures. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of a wear-resistant and high-temperature resistant bearing bush according to the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of a wear-resistant and high-temperature resistant bearing bush according to the present invention (after the bearing bush and the rotating shaft are installed together);

[0022] Figure 3 This is a three-dimensional structural diagram of the upper bearing bush of the wear-resistant and high-temperature resistant bearing bush of this utility model;

[0023] Figure 4 This is a cross-sectional view of the upper bearing bush of the wear-resistant and high-temperature resistant bearing bush of this utility model.

[0024] Figure 5 This is a three-dimensional structural diagram of the lower bearing bush of the wear-resistant and high-temperature resistant bearing bush of this utility model;

[0025] Figure 6 This is a cross-sectional structural diagram of the lower bearing bush of the wear-resistant and high-temperature resistant bearing bush of this utility model;

[0026] Figure 7This is a three-dimensional structural diagram of a sliding bearing.

[0027] In the diagram: 1. Upper bearing shell; 101. First oil groove; 102. Second oil groove; 103. Drain hole; 104. First oil hole; 105. Third oil groove; 106. Fourth oil groove; 2. Lower bearing shell; 201. Fifth oil groove; 202. Sixth oil groove; 204. Second oil hole; 205. Seventh oil groove; 206. Eighth oil groove; 3. Rotating shaft; 4. Bearing seat; 5. Bearing cover; 6. Bolt. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying anything.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0030] Please see Figures 1 to 7 This utility model provides a technical solution: a wear-resistant and high-temperature resistant bearing bush, which is installed on a sliding bearing. The sliding bearing includes a bearing housing 4, a bearing cover 5, an upper bearing bush 1, a lower bearing bush 2, and multiple bolts 6. The bearing cover 5 is fixedly installed on the bearing housing 4 by multiple bolts 6, and a cavity is formed between the bearing cover 5 and the bearing housing 4. The upper bearing bush 1 and the lower bearing bush 2 are inserted into the cavity between the bearing cover 5 and the bearing housing 4 after being snapped together. In actual operation, a rotating shaft 3 (this rotating shaft 3 generally refers to a rotatable shaft) passes through the interior of the upper bearing bush 1 and the lower bearing bush 2. The rotating shaft 3 can be a motor shaft, etc. The rotating shaft 3 rotates at high speed between the upper bearing bush 1 and the lower bearing bush 2. The sliding bearing also includes components such as oil seals. The structure and related working principles of the sliding bearing will not be described in detail here.

[0031] A wear-resistant and high-temperature resistant bearing bush includes an upper bearing bush 1 and a lower bearing bush 2, which, when engaged, form an integral annular cylindrical structure. Multiple rows of axially arranged oil holes are formed in the middle of the cylindrical structure. Each row of oil holes is arranged sequentially along the circumference of the cylindrical structure and penetrates the wall of the structure. The diameter of the oil hole at the end closest to the axis of the cylindrical structure is smaller than the diameter at the other end. Each row of oil holes includes multiple first oil holes 104 and multiple second oil holes 204.

[0032] This design allows the lubricating oil flow to automatically adjust based on the bearing's operating speed and temperature during operation. When the bearing's operating speed increases or its temperature rises, the lubricating oil flows more easily from the oil hole, forming a uniform oil film and effectively reducing friction between the bearing and the rotating shaft 3. This automatic adjustment function not only improves lubrication efficiency but also extends the lubricating oil's service life and reduces maintenance costs. The diameter of the oil hole at the end closest to the cylinder structure's axis is smaller than that at the other end, facilitating faster flow of lubricating oil from the outside in. The smaller inner diameter of the oil hole effectively reduces or prevents oil film rupture or loss, ensuring the continuity of the oil film.

[0033] Specifically, the oil hole is frustum-shaped, and the tip of the oil hole faces the axis of the cylindrical structure.

[0034] The oil hole is frustum-shaped, with its tip pointing towards the axis of the cylindrical structure. This facilitates faster flow of lubricating oil from the outside to the inside. The small inner diameter of the oil hole effectively reduces or prevents oil film loss, ensuring oil film continuity. Simultaneously, it allows the lubricating oil flow rate to automatically adjust according to the bearing's operating speed and temperature, ensuring uniform oil distribution and improving lubrication efficiency. This design reduces lubricating oil waste, extends lubricating oil lifespan, and lowers maintenance costs.

[0035] Specifically, a first oil groove 101 is formed on the outer side wall of the upper bearing 1 along the axial direction, and at least one second oil groove 102 is formed on the outer side wall of the upper bearing 1 along the circumferential direction, with the first oil groove 101 and the second oil groove 102 communicating with each other. A third oil groove 105 is formed on the inner side wall of the upper bearing 1 along the axial direction, and at least one fourth oil groove 106 is formed on the inner side wall of the upper bearing 1 along the circumferential direction, with the third oil groove 105 and the fourth oil groove 106 communicating with each other.

[0036] The design of the first oil groove 101, the second oil groove 102, the third oil groove 105, and the fourth oil groove 106 increases the storage capacity of lubricating oil, ensuring an ample supply. Furthermore, the interconnection between the oil grooves allows the lubricating oil to form two oil films on the inner and outer walls of the bearing bush, further reducing friction between the bearing bush and the rotating shaft 3. Simultaneously, the multi-layered oil film effectively absorbs and disperses the heat generated during bearing bush operation, lowering the bearing bush temperature and enhancing its high-temperature resistance.

[0037] More specifically, the first oil groove 101 is located at the highest point on the outer side wall of the upper bearing 1, and the third oil groove 105 is located at the highest point on the inner side wall of the upper bearing 1. The upper bearing 1 is provided with a drain hole 103 that penetrates its wall, and the drain hole 103 is connected to the first oil groove 101 and the third oil groove 105 respectively.

[0038] The first oil groove 101 is located at the highest point on the outer wall of the upper bearing shell 1, which facilitates the flow of lubricating oil along the highest point (ridge) of the upper bearing shell 1 to both sides of the curved surface, ensuring the uniformity of the lubricating oil flow to both sides. The main function of the drain hole 103 is: when adding lubricating oil to the sliding bearing, oil is injected into the sliding bearing through the oil injection hole on the bearing cover 5, and the drain hole 103 corresponds longitudinally to the oil injection hole on the bearing cover 5. During oil injection, the lubricating oil can flow into the bearing shell in a timely manner through the drain hole 103, which can accelerate the flow of lubricating oil into the bearing shell and improve the oil injection efficiency. At the same time, after the oil injection hole is closed, the drain hole 103 can guide excess lubricating oil from the first oil groove 101 to the third oil groove 105, thereby realizing the internal circulation of lubricating oil. This design not only improves the utilization rate of lubricating oil, but also avoids the leakage problem caused by excessive accumulation of lubricating oil in the oil groove, further improving the operating stability of the bearing shell.

[0039] Specifically, a seventh oil groove 205 is formed on the inner sidewall of the lower bearing 2 along the axial direction, and an eighth oil groove 206 is formed on the inner sidewall of the lower bearing 2 along the circumferential direction, with the seventh oil groove 205 and the eighth oil groove 206 communicating with each other. A fifth oil groove 201 is formed on the outer sidewall of the lower bearing 2 along the axial direction, and a sixth oil groove 202 is formed on the outer sidewall of the lower bearing 2 along the circumferential direction, with the fifth oil groove 201 and the sixth oil groove 202 communicating with each other.

[0040] The design of the seventh oil groove 205, eighth oil groove 206, fifth oil groove 201, and sixth oil groove 202 increases the storage capacity of lubricating oil, ensuring an ample supply. Furthermore, the interconnection between the oil grooves allows the lubricating oil to form two oil films on the inner and outer walls of the bearing bush, further reducing friction between the bearing bush and the rotating shaft 3. Simultaneously, the multi-layered oil film effectively absorbs and disperses the heat generated during bearing bush operation, lowering the bearing bush temperature and enhancing its high-temperature resistance.

[0041] Specifically, the area of ​​each oil drain hole is one-third to one-quarter of the area of ​​the outer wall of the cylinder structure.

[0042] The area of ​​each oil drain hole refers to the area between the two furthest adjacent rows of oil drain holes on the outer wall of the cylinder structure. The area of ​​the outer wall of the cylinder structure refers to the total area of ​​the outer wall of the cylinder structure. The ratio of the area of ​​each oil drain hole to the area of ​​the outer wall of the cylinder structure ranges from one-third to one-quarter. This design ensures that the area of ​​the oil drain hole region meets the requirements for uniform distribution of lubricating oil without compromising the structural strength of the bearing due to excessive area. By rationally designing the area of ​​the oil drain hole region, the bearing can maintain good lubrication performance and structural stability during operation, further improving the service life and operational reliability of the bearing.

[0043] Meanwhile, the oil drain holes are located in the middle of the cylindrical structure to enhance temperature regulation. This is because during the operation of the sliding bearing, the inner middle part of the sliding bearing heats up first due to the influence of axial load, longitudinal load, etc. Therefore, setting the oil drain holes in the middle of the cylindrical structure can enhance the bearing's temperature self-regulation.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wear-resistant and high-temperature resistant bearing bush, which is installed on a sliding bearing, characterized in that: It includes an upper bearing shell (1) and a lower bearing shell (2), wherein the upper bearing shell (1) and the lower bearing shell (2) are fastened together to form an integral ring-shaped cylindrical structure; The cylindrical structure has multiple rows of oil holes arranged axially in the middle. Each oil hole in each row is arranged sequentially along the circumferential direction of the cylindrical structure and penetrates the wall of the cylindrical structure. The diameter of the oil hole at one end near the axis of the cylinder structure is smaller than the diameter at the other end. Each row of oil holes includes multiple first oil holes (104) and multiple second oil holes (204).

2. The wear-resistant and high-temperature resistant bearing bush according to claim 1, characterized in that: The oil hole is frustum-shaped, and the tip of the oil hole faces the axis of the cylindrical structure.

3. The wear-resistant and high-temperature resistant bearing bush according to claim 1, characterized in that: The upper bearing bush (1) has a first oil groove (101) on its outer side wall along the axial direction, and at least one second oil groove (102) on its outer side wall along the circumferential direction, and the first oil groove (101) and the second oil groove (102) are connected; the upper bearing bush (1) has a third oil groove (105) on its inner side wall along the axial direction, and at least one fourth oil groove (106) on its inner side wall along the circumferential direction, and the third oil groove (105) and the fourth oil groove (106) are connected.

4. The wear-resistant and high-temperature resistant bearing bush according to claim 3, characterized in that: The first oil groove (101) is located at the highest point on the outer side wall of the upper bearing (1), and the third oil groove (105) is located at the highest point on the inner side wall of the upper bearing (1). The upper bearing (1) is provided with a drain hole (103) that penetrates its wall, and the drain hole (103) is connected to the first oil groove (101) and the third oil groove (105) respectively.

5. The wear-resistant and high-temperature resistant bearing bush according to claim 1, characterized in that: A seventh oil groove (205) is provided on the inner side wall of the lower bearing (2) along the axial direction, and an eighth oil groove (206) is provided on the inner side wall of the lower bearing (2) along the circumferential direction, and the seventh oil groove (205) and the eighth oil groove (206) are connected.

6. The wear-resistant and high-temperature resistant bearing bush according to claim 5, characterized in that: A fifth oil groove (201) is provided on the outer side wall of the lower bearing (2) along the axial direction, and a sixth oil groove (202) is provided on the outer side wall of the lower bearing (2) along the circumferential direction, and the fifth oil groove (201) and the sixth oil groove (202) are connected.

7. The wear-resistant and high-temperature resistant bearing bush according to claim 1, characterized in that: The area of ​​each oil drain hole is one-third to one-quarter of the area of ​​the outer wall of the cylinder structure.

Images