Wear-resistant thrust bearing of turbocharger

Abstract

The utility model belongs to the technical field of turbocharger accessories, particularly relates to a wear-resistant thrust bearing of a turbocharger, and aims to solve the problems of uneven distribution of lubricating oil, poor stability of an oil film and the like caused by the fact that the existing lubricating oil quickly flows towards the radial outer direction under the action of centrifugal force, and the wear of a bearing is aggravated. The thrust shaft comprises a thrust shaft body, one side of the thrust shaft body is provided with a thrust surface, a plurality of oil storage assemblies and oil supply assemblies are arranged, so that sufficient lubricating oil supply is always kept in the running process of a bearing, the lubricating efficiency is improved, and an oil inlet and an arc-shaped oil groove close to the shaft center are arranged, so that the lubricating effect is improved. By the adoption of the structure, lubricating oil can flow in the bearing more smoothly, a stable and even lubricating oil film can be formed easily, friction and abrasion of the bearing are effectively reduced, the service life of the bearing is prolonged through the design of automatic lubricating oil supply, and the overall durability of the turbocharger is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of turbocharger accessories, in particular to a wear-resistant thrust bearing of a turbocharger. Background Art

[0002] The thrust bearing is one of the key components of a turbocharger. In a turbocharger, the thrust bearing's function is to balance the turbine-end pressure and the compression-end pressure of the turbocharger rotor assembly. Its wear resistance and lubrication performance directly affect the overall performance and life of the turbocharger.

[0003] Traditional thrust bearings usually adopt a simple oil groove design, and lubricating oil is supplied to the bearings through an external oil supply system to form a lubricating film to reduce friction and wear. However, under high-speed and high-load conditions, lubricating oil consumption not only increases but also flows rapidly outward due to centrifugal force, resulting in uneven lubricating oil distribution and poor oil film stability. These problems lead to increased bearing wear and seriously affect the reliability and durability of the turbocharger. Therefore, we propose a wear-resistant thrust bearing for turbochargers to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art in that the lubricating oil flows rapidly in the radially outward direction under the action of centrifugal force, resulting in uneven distribution of the lubricating oil, poor oil film stability and increased wear of the problem bearings, and to propose a wear-resistant thrust bearing for a turbocharger.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A wear-resistant thrust bearing for a turbocharger, comprising a thrust shaft body, one side of the thrust shaft body being provided with a thrust surface, the thrust surface being provided with a plurality of oil wedge surfaces, the thrust surface being provided with a plurality of oil grooves matching the oil wedge surfaces, the inner walls of one side of the plurality of oil grooves being provided with oil inlets near the axis of the thrust shaft body, the thrust bearing further comprising:

[0007] A plurality of oil storage assemblies, each of which is provided on the thrust shaft body and is used to store oil for lubrication;

[0008] Multiple oil supply components are arranged on the thrust shaft body and located on one side of the oil storage component, and are used to transport lubricating oil to the oil tank to form an oil film.

[0009] In one possible design, the multiple oil grooves are all arc-shaped. The provision of the arc-shaped oil grooves allows the lubricating oil to flow more smoothly in the bearing, which is conducive to forming a stable lubricating oil film.

[0010] In a possible design, the oil storage assembly includes an oil storage tank, which is opened on the thrust shaft body. The outer wall of the thrust shaft body is provided with a plurality of oil filling holes, and the oil filling holes are connected to the corresponding oil storage tanks.

[0011] In a possible design, the oil supply assembly includes an oil channel, which is opened inside the thrust shaft body and located on one side of the oil storage tank. One end of the oil channel is connected to the oil storage tank, and the other end of the oil channel is connected to the oil inlet.

[0012] In one possible design, a slider with a certain weight is slidably connected to the inner wall of the oil storage tank. The centrifugal force generated by the rotation of the thrust shaft body causes the slider to move in the oil storage tank, thereby squeezing the lubricating oil and allowing the lubricating oil to flow into the oil inlet through the oil channel.

[0013] In a possible design, an oil retaining ring is fixedly provided on the outer wall of the thrust shaft body.

[0014] In the present application, lubricating oil is first injected into a plurality of oil storage tanks provided on the thrust shaft body through the oil filling holes on the outer wall of the thrust shaft body. The lubricating oil injected into the oil storage tank enters the corresponding oil groove through the corresponding oil channel. During the operation of the bearing, the lubricating oil entering the oil groove can flow smoothly and form a stable lubricating oil film due to the design of the arc-shaped oil groove, covering the thrust surface, thereby reducing friction and wear of the bearing.

[0015] When the thrust shaft body is working for a long time and the lubricating oil in the oil tank is consumed less, centrifugal force will be generated when the thrust shaft body rotates. The slider with a certain weight in the oil storage tank will move from the inside of the oil storage tank to the outside of the thrust shaft body diameter under the action of centrifugal force, thereby squeezing the lubricating oil in the oil storage tank, causing the lubricating oil to flow into the oil channel and enter the oil tank from the oil inlet near the axis in the oil tank. When the thrust shaft body rotates at a high speed, the centrifugal force increases, the kinetic energy of the slider movement increases, and more lubricating oil is squeezed into the oil channel. When the speed is low, the centrifugal force decreases, the kinetic energy of the slider movement decreases, and the squeezed lubricating oil is relatively reduced, thereby realizing autonomous adjustment of the lubricating oil supply according to the speed. At the same time, the oil inlet is arranged near the axis, so that when the thrust bearing rotates at high speed, the lubricating oil flows from the inside of the thrust bearing diameter to the outside of the thrust bearing diameter under the action of centrifugal force, which is conducive to forming a stable and uniform lubricating oil film, effectively reducing the friction and wear of the bearing.

[0016] To prevent lubricating oil leakage, an oil retaining ring is fixedly provided on the outer wall of the thrust shaft body, which effectively prevents lubricating oil from overflowing from the outside of the bearing and ensures the sealing and stability of the lubrication system. Beneficial effects

[0017] In the present invention, the wear-resistant thrust bearing of the turbocharger realizes the autonomous supply of lubricating oil by providing multiple oil storage assemblies and oil supply assemblies, thereby ensuring that the bearing always maintains sufficient lubricating oil supply during operation and improving lubrication efficiency.

[0018] In the present invention, the wear-resistant thrust bearing of the turbocharger is provided with an oil inlet and an arc-shaped oil groove near the axis, which not only makes the flow of lubricating oil in the bearing smoother, but also facilitates the formation of a stable and uniform lubricating oil film, thereby effectively reducing the friction and wear of the bearing.

[0019] In the present invention, the wear-resistant thrust bearing of the turbocharger can adapt to the lubrication requirements under different working conditions by autonomously adjusting the lubricating oil supply, thereby extending the service life of the bearing and improving the overall durability of the turbocharger.

[0020] In the utility model, by setting up multiple oil storage components and oil supply components, it is ensured that the bearings always maintain an adequate supply of lubricating oil during operation, thereby improving lubrication efficiency. The oil inlet and arc-shaped oil groove close to the axis not only make the flow of lubricating oil in the bearing smoother, but also help to form a stable and uniform lubricating oil film, effectively reducing the friction and wear of the bearings. The design of autonomous lubricating oil supply extends the service life of the bearings and improves the overall durability of the turbocharger. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional structural diagram of a wear-resistant thrust bearing for a turbocharger proposed by the present invention;

[0022] Figure 2 This is a schematic diagram of a sectional three-dimensional structure of a wear-resistant thrust bearing of a turbocharger proposed by the present invention;

[0023] Figure 3 This is a partial sectional three-dimensional structural schematic diagram of a wear-resistant thrust bearing of a turbocharger proposed by the utility model.

[0024] In the figure: 1. Thrust shaft body; 2. Oil retaining ring; 3. Oil wedge surface; 4. Oil groove; 5. Oil inlet; 6. Oil storage tank; 7. Slider; 8. Oil filling hole; 9. Oil channel. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Example

[0026] Reference Figure 1-3A thrust bearing comprises a thrust shaft body 1, one side of which is designed as a thrust surface. Multiple oil wedges 3 are carefully arranged on this thrust surface to optimize the flow path of the lubricating oil. Furthermore, multiple arcuate oil grooves 4 are cleverly arranged on the thrust surface to match the oil wedges 3. These arcuate oil grooves 4 facilitate the flow of lubricating oil within the bearing, helping to form a stable and long-lasting lubricating oil film, significantly improving the bearing's wear resistance and service life.

[0027] Each arc-shaped oil groove 4 has an oil inlet 5 on its inner wall near the axis of the thrust shaft body 1 to allow lubricating oil to be introduced into the oil groove. In order to continuously supply lubricating oil, multiple oil storage components and oil supply components are integrated on the thrust shaft body 1.

[0028] Specifically, the oil storage assembly includes oil reservoirs 6 provided on the thrust shaft body 1. These reservoirs 6 are used to store lubricating oil. To facilitate lubricating oil addition, the outer wall of the thrust shaft body 1 also includes multiple oil filling holes 8. These filling holes 8 are connected to the corresponding oil reservoirs 6, allowing the user to inject an appropriate amount of lubricating oil into the oil reservoirs 6 through the filling holes 8.

[0029] The oil supply assembly includes oil passages 9 disposed within the thrust shaft body 1. These passages 9 are located on one side of the oil reservoir 6, with one end connected to the reservoir 6 and the other end communicating with the oil inlet 5. During turbocharger operation, as the thrust shaft body 1 rotates, the lubricating oil stored in the reservoir 6 is transported through the oil passages 9 to the oil inlet 5, and then into the oil tank 4, forming an effective lubricating oil film.

[0030] The present application can be used in the technical field of turbocharger accessories, and can also be used in other fields applicable to the present application. Example

[0031] refer to Figure 2-3 Based on the first embodiment, an improvement is provided: a wear-resistant thrust bearing for a turbocharger, applicable to the field of turbocharger accessories. A heavy slider 7 is slidably connected to the inner wall of an oil reservoir 6. When the thrust shaft body 1 rotates, the slider 7 moves within the oil reservoir 6 due to centrifugal force, squeezing the lubricating oil. This squeezing action causes the lubricating oil to flow smoothly through the oil passage 9 into the oil inlet 5, thereby providing a continuous and stable supply of lubricating oil to the oil tank 4.

[0032] In addition, in order to prevent the lubricating oil from leaking during the rotation process, an oil retaining ring 2 is fixedly provided on the outer wall of the thrust shaft body 1. The design of the oil retaining ring 2 effectively prevents the lubricating oil from overflowing and ensures the stable operation of the lubrication system inside the bearing.

[0033] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wear-resistant thrust bearing for a turbocharger, comprising a thrust shaft body (1), one side of the thrust shaft body (1) being provided with a thrust surface, a plurality of oil wedge surfaces (3) being provided on the thrust surface, a plurality of oil grooves (4) matching the oil wedge surfaces (3) being provided on the thrust surface, and an oil inlet (5) being provided on the inner wall of one side of the plurality of oil grooves (4) close to the axial direction of the thrust shaft body (1), characterized in that: The thrust bearing also includes: A plurality of oil storage assemblies, each of which is arranged on the thrust shaft body (1) and is used to store oil for lubrication; A plurality of oil supply assemblies, each of which is arranged on the thrust shaft body (1) and located on one side of the oil storage assembly, and is used to transport lubricating oil to the oil tank (4) to form an oil film; The oil storage assembly includes an oil storage tank (6), the oil storage tank (6) is opened on the thrust shaft body (1), and the outer wall of the thrust shaft body (1) is provided with a plurality of oil filling holes (8), and the oil filling holes (8) are communicated with the corresponding oil storage tanks (6); The oil supply assembly includes an oil passage (9), the oil passage (9) being opened inside the thrust shaft body (1) and located on one side of the oil storage tank (6), one end of the oil passage (9) being connected to the oil storage tank (6), and the other end of the oil passage (9) being connected to the oil inlet (5); The inner wall of the oil storage bin (6) is slidably connected to a slider (7) having a certain weight. The slider (7) moves in the oil storage bin (6) through the centrifugal force generated by the rotation of the thrust shaft body (1), thereby squeezing the lubricating oil and allowing the lubricating oil to flow into the oil inlet (5) through the oil channel (9).

2. The wear-resistant thrust bearing of a turbocharger according to claim 1, characterized in that: The plurality of oil grooves (4) are all arc-shaped, and the provision of the arc-shaped oil grooves (4) allows the lubricating oil to flow more smoothly within the bearing, thereby facilitating the formation of a stable lubricating oil film.

3. The wear-resistant thrust bearing of a turbocharger according to claim 1, characterized in that: An oil retaining ring (2) is fixedly provided on the outer wall of the thrust shaft body (1).

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