A bearing bush with heat dissipation effect

Abstract

This utility model discloses a bearing bush with heat dissipation effect, including a lower bearing bush shell and an upper bearing bush shell. The lower bearing bush shell is located above the upper bearing bush shell. Multiple bearing bush contact pieces are fixedly embedded on the sides of both the lower and upper bearing bush shells that are close to each other. Multiple heat dissipation grooves are formed on the upper surface of the lower bearing bush shell and the outer surface of the upper bearing bush shell. One end of each set of bearing bush contact pieces extends into the interior of the two sets of heat dissipation grooves. Multiple heat dissipation strips are fixedly connected to the sides of both sets of bearing bush contact pieces that are far apart from each other. The bearing bush contact pieces of this utility model are made of copper-aluminum alloy composite material, and in conjunction with the heat dissipation strips, heat can be directly conducted from the friction source, avoiding the long-distance transmission loss of traditional heat dissipation channels. Through the cooperation of the oil injection hole, oil injection connector, and oil drain hole, a lubrication assembly can be formed. After the lubricating oil enters the strip-shaped heat dissipation groove, it forms a lubricating film, reducing the coefficient of friction and simultaneously reducing heat generation.

Description

Technical Field

[0001] This application relates to the field of bearing technology, and more particularly to a bearing with heat dissipation effect. Background Technology

[0002] The bearing bush is the core component of a sliding bearing that directly contacts the journal. It has a tile-shaped semi-cylindrical structure and is usually made of wear-resistant materials such as bronze and Babbitt metal. In special cases, materials such as carbon graphite or engineering plastics are also used. It is divided into two types: integral and split. It forms an oil film through clearance fit with the journal, thereby reducing friction, bearing load and stabilizing transmission. It is widely used in heavy-duty high-speed equipment such as automobile engines, steam turbines and marine diesel engines.

[0003] Currently, the friction between the bearing and the shaft continuously generates heat during operation. However, traditional bearing heat dissipation designs have bottlenecks: firstly, heat must be conducted long distances from the alloy layer (such as Babbitt metal) on the friction surface through the steel backing to the outside, resulting in high thermal resistance and low efficiency; secondly, the grooves created on the inner wall to enhance heat dissipation often conflict with the fluid dynamics requirements of the lubricating oil, making it difficult to simultaneously achieve efficient heat dissipation and stable oil film formation. Therefore, to solve these problems, we provide a bearing with heat dissipation capabilities. Utility Model Content

[0004] The purpose of this invention is to provide a bearing with heat dissipation effect to solve the problems mentioned in the background art.

[0005] The embodiments of this application adopt the following technical solutions:

[0006] A bearing bush with heat dissipation effect includes a lower bearing bush shell and an upper bearing bush shell. The lower bearing bush shell is located above the upper bearing bush shell. Multiple bearing bush contact pieces are fixedly embedded on the side of the lower bearing bush shell and the upper bearing bush shell that are close to each other. Multiple heat dissipation grooves are formed on the upper surface of the lower bearing bush shell and the outer surface of the upper bearing bush shell. One end of each of the two sets of bearing bush contact pieces extends into the interior of the two sets of heat dissipation grooves. Multiple heat dissipation strips are fixedly connected on the side of the two sets of bearing bush contact pieces that are far from each other. Multiple strip-shaped heat dissipation grooves are formed on the inner ring of the lower bearing bush shell and the inner ring of the upper bearing bush shell.

[0007] Preferably, one end of the lower bearing shell and one end of the upper bearing shell are provided with limiting ends, and the inner rings of the two limiting ends are provided with heat dissipation guide grooves, and the heat dissipation guide grooves are connected to the strip heat dissipation grooves.

[0008] Preferably, an oil injection hole is provided on one side of the upper bearing shell, an oil drain hole is provided on the inner ring of the upper bearing shell, and the oil drain hole is connected to the oil injection hole. The inner ring of the oil injection hole is threaded, and an oil injection connector is provided at one end of the oil injection hole. The outer surface of the oil injection connector is adapted to the inner wall thread of the oil injection hole.

[0009] Preferably, the bottom surface of the upper bearing shell is provided with a positioning groove, and the upper surface of the lower bearing shell is provided with two positioning protrusions, and the outer surface of the positioning protrusions is adapted to the inner wall of the positioning groove.

[0010] Preferably, the bearing contact piece is made of copper-aluminum alloy composite material, the heat dissipation strip is made of oxygen-free copper, and the heat dissipation strip and the bearing contact piece are fixedly connected by brazing.

[0011] Preferably, both the lower bearing shell and the upper bearing shell are made of cast aluminum alloy, and both the lower bearing shell and the upper bearing shell have an anodized heat dissipation layer on their outer surfaces.

[0012] The above-described technical solutions adopted in the embodiments of this application can achieve the following beneficial effects:

[0013] A low-thermal-resistance axial heat dissipation channel was established: by directly connecting the high thermal conductivity bearing contact piece 4 to the equally high thermal conductivity heat dissipation strip 6, and embedding the heat dissipation strip 6 into the heat dissipation groove 5 of the bearing shell in close contact, an efficient axial heat conduction path was formed directly from the friction heat source (bearing contact piece) to the external environment. This path significantly shortens the heat conduction distance and greatly reduces the thermal resistance conducted radially through the steel backing in traditional structures, thereby rapidly reducing the temperature of the friction pair region.

[0014] The unique strip-shaped heat dissipation groove (3) design achieves synergistic effect of lubrication and heat dissipation. Under the premise of ensuring the oil film bearing capacity, the flow of lubricating oil realizes active heat exchange (liquid cooling) of the friction pair. This forms a composite heat dissipation mechanism of "solid-liquid synergistic heat dissipation" with the above-mentioned axial solid heat conduction path, which solves the contradiction that traditional design cannot take into account both lubrication and heat dissipation.

[0015] Improved structural reliability and assembly accuracy: The cooperation between the positioning protrusion (13) and the positioning groove (12) ensures the alignment of the upper and lower bearing shells, avoiding local overheating and wear caused by misalignment. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 See: A three-dimensional structural diagram of the bearing bush with heat dissipation effect of this utility model from the front view;

[0018] Figure 2 See: A three-dimensional structural diagram of the bearing bush with heat dissipation effect of this utility model from the rear view;

[0019] Figure 3 See: A three-dimensional structural diagram of the lower bearing shell of the bearing bush with heat dissipation effect of this utility model, viewed from below;

[0020] Figure 4 The following is a top-view three-dimensional structural diagram of the lower bearing shell of the bearing bush with heat dissipation effect of this utility model.

[0021] Figure 5 See: A side sectional view of the upper bearing shell of the bearing bush with heat dissipation effect of this utility model.

[0022] In the figure: 1. Lower bearing shell; 2. Upper bearing shell; 3. Strip-shaped heat dissipation groove; 4. Bearing contact piece; 5. Heat dissipation groove; 6. Heat dissipation strip; 7. Oil injection hole; 8. Oil drain hole; 9. Oil injection connector; 10. Limiting end; 11. Heat dissipation guide groove; 12. Positioning groove; 13. Positioning protrusion. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] The technical solutions provided by the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0025] Please see Figure 1-5 This utility model provides a bearing technology solution with heat dissipation effect:

[0026] A bearing bush with heat dissipation effect includes a lower bearing shell 1 and an upper bearing shell 2. The lower bearing shell 1 is located above the upper bearing shell 2. Multiple bearing contact pieces 4 are fixedly embedded on the sides of both the lower and upper bearing shells that are close to each other. The bearing contact pieces 4 are made of copper-aluminum alloy with a thermal conductivity of not less than 150 W / (m·K). Multiple heat dissipation grooves 5 are formed on the upper surface of the lower bearing shell 1 and the outer surface of the upper bearing shell 2. One end of each set of bearing contact pieces 4 extends into the interior of the two sets of heat dissipation grooves 5. Multiple heat dissipation strips 6 are fixedly connected to the sides of both sets of bearing contact pieces 4 that are far apart from each other. Multiple miniature strip-shaped heat dissipation grooves 3 are formed on the inner rings of both the lower and upper bearing shells. The depth and width of the strip-shaped heat dissipation grooves 3 are designed to be micro-groove dimensions that do not affect the formation of the main oil film. The main function of the strip-shaped heat dissipation grooves 3 is: 1. To guide the lubricating oil to flow axially and promote the oil film on the friction surface. The lubricant is evenly distributed across the surface; secondly, the contact area between the lubricating oil and the inner wall of the bearing bush is increased, allowing the flowing lubricating oil to carry away some heat and achieve a liquid cooling effect. Specifically, the lower bearing bush shell 1 and the upper bearing bush shell 2 are spliced ​​together to form a complete semi-cylindrical bearing space, providing a stable support foundation for the shaft. The bearing bush contact piece 4 directly contacts the shaft to achieve frictional bearing, and its copper-aluminum alloy material provides a foundation for thermal conductivity. The heat dissipation strip 6 is fixed to the back of the bearing bush contact piece 4 by brazing. The outer dimensions of the heat dissipation strip 6 are interference-fitted with the inner cavity dimensions of the heat dissipation groove 5 or filled with high thermal conductivity thermal adhesive. When the heat dissipation strip 6 is embedded in the heat dissipation groove 5, it ensures close physical contact with the metal substrate of the lower bearing bush shell 1 or the upper bearing bush shell 2, forming a low thermal resistance heat conduction path. The existence of the heat dissipation groove 5 provides installation space for the heat dissipation strip 6 and increases the contact surface area between the bearing bush shell and the surrounding air or cooling medium.

[0027] In this embodiment, a limiting end 10 is provided at one end of the lower bearing shell 1 and one end of the upper bearing shell 2. The inner rings of both limiting ends 10 are provided with heat dissipation guide grooves 11, which are connected to the strip-shaped heat dissipation grooves 3, forming a network for guiding and distributing lubricating oil. This ensures that the lubricating oil can effectively cover the entire friction pair surface, while facilitating the discharge of hot oil and the replenishment of new oil. An oil injection hole 7 is provided on one side of the upper bearing shell 2, and an oil drain hole 8 is provided on the inner ring of the upper bearing shell 2. The oil drain hole 8 is connected to the oil injection hole 7. The inner ring of the oil injection hole 7 is threaded, and one end of the oil injection hole 7 is provided with an oil injection port. The outer surface of the oil filling connector 9 is threadedly fitted to the inner wall of the oil filling hole 7. Specifically, the limiting end 10 can axially position the bearing assembly position to prevent displacement during operation. The heat dissipation guide groove 11 on its inner side is connected to the strip heat dissipation groove 3, which can accelerate the heat dissipation in the groove. The threaded fit between the oil filling hole 7 and the oil filling connector 9 ensures the sealing performance during oil filling and facilitates the addition of lubricating oil. The lubricating oil enters the strip heat dissipation groove 3 through the oil drain hole 8. On the one hand, it forms a lubricating film to reduce the friction coefficient between the bearing contact piece 4 and the rotating shaft. On the other hand, it acts as a cooling medium to carry away the heat accumulated in the groove, realizing the linkage of heat dissipation and lubrication functions.

[0028] In this embodiment, the bottom surface of the upper bearing shell 2 is provided with a positioning groove 12, and the upper surface of the lower bearing shell 1 is provided with two positioning protrusions 13. The outer surface of the positioning protrusions 13 is adapted to the inner wall of the positioning groove 12. The bearing contact piece 4 is made of copper-aluminum alloy composite material, and the heat dissipation strip 6 is made of oxygen-free copper. The heat dissipation strip 6 and the bearing contact piece 4 are fixedly connected by brazing. Both the lower bearing shell 1 and the upper bearing shell 2 are made of cast aluminum alloy, and the outer surface of both the lower bearing shell 1 and the upper bearing shell 2 is provided with an anodized heat dissipation layer. Specifically, the matching structure of the positioning protrusions 13 and the positioning groove 12 can quickly calibrate the splicing position of the lower bearing shell 1 and the upper bearing shell 2, avoiding uneven contact and heat conduction breaks caused by assembly deviation.

[0029] Working principle: When the bearing is working, the shaft directly rubs against the bearing contact pieces 4 inside the lower bearing shell 1 and the upper bearing shell 2 to generate heat. The copper-aluminum alloy composite material of the bearing contact pieces 4 has excellent thermal conductivity, which can quickly transfer the frictional heat to the brazed oxygen-free copper heat dissipation strips 6. The heat dissipation strips 6 increase the contact area with the air, realizing the initial diffusion of heat to the outside. At the same time, lubricating oil is injected from the oil injection joint 9, and enters the lubrication network composed of the strip heat dissipation grooves 3 and heat dissipation guide grooves 11 through the oil injection hole 7 and the oil drain hole. Under the drive of the journal, it is distributed on the entire friction surface and finally discharged from both ends of the bearing. This forms a lubricating film to reduce frictional heat generation and removes heat from the grooves, improving the uniformity and efficiency of heat dissipation.

[0030] It should also be noted that, in terms of circuit structure, the drive and control circuits of this utility model are common and mature technologies. Those skilled in the art can select appropriate circuit components to build the circuit according to the power requirements and control requirements of the equipment. For the power supply components, common general-purpose power supply equipment on the market can be used, as long as it meets the voltage and current requirements of the equipment. No special design is required. In addition, the electrical components in this application are all common electrical equipment in the prior art. Furthermore, since they need to be connected to an external control system, this application will not elaborate on their models or internal structures.

[0031] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalent elements of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A bearing bush having a heat dissipation effect, comprising a lower bearing bush shell (1) and an upper bearing bush shell (2), characterized in that: The lower bearing shell (1) is located above the upper bearing shell (2). Multiple bearing contact pieces (4) are fixedly embedded on the side of the lower bearing shell (1) and the upper bearing shell (2) that are close to each other. Multiple heat dissipation grooves (5) are opened on the upper surface of the lower bearing shell (1) and the outer surface of the upper bearing shell (2). One end of the two sets of bearing contact pieces (4) extends into the interior of the two sets of heat dissipation grooves (5). Multiple heat dissipation strips (6) are fixedly connected on the side of the two sets of bearing contact pieces (4) that are far apart from each other. Multiple miniature strip heat dissipation grooves (3) are opened on the inner ring of the lower bearing shell (1) and the inner ring of the upper bearing shell (2).

2. The bearing bush with heat dissipation effect according to claim 1, characterized in that: Both the lower bearing shell (1) and the upper bearing shell (2) are provided with limiting ends (10), and the inner rings of the two limiting ends (10) are provided with heat dissipation guide grooves (11), and the heat dissipation guide grooves (11) are connected to the strip heat dissipation grooves (3).

3. The bearing bush with heat dissipation effect according to claim 1, characterized in that: An oil injection hole (7) is provided on one side of the upper bearing shell (2), and an oil drain hole (8) is provided on the inner ring of the upper bearing shell (2), and the oil drain hole (8) is connected to the oil injection hole (7).

4. The bearing bush with heat dissipation effect according to claim 3, characterized in that: The inner ring of the oil injection hole (7) is threaded, and an oil injection connector (9) is provided at one end of the oil injection hole (7). The outer surface of the oil injection connector (9) is adapted to the inner wall thread of the oil injection hole (7).

5. The bearing bush with heat dissipation effect according to claim 1, characterized in that: The bottom surface of the upper bearing shell (2) is provided with a positioning groove (12), and the upper surface of the lower bearing shell (1) is provided with two positioning protrusions (13), and the outer surface of the positioning protrusions (13) is adapted to the inner wall of the positioning groove (12).

6. The bearing bush with heat dissipation effect according to claim 1, characterized in that: The bearing contact piece (4) is made of copper-aluminum alloy composite material, the heat dissipation strip (6) is made of oxygen-free copper, and the heat dissipation strip (6) and the bearing contact piece (4) are fixedly connected by brazing.

7. The bearing bush with heat dissipation effect according to claim 1, characterized in that: Both the lower bearing shell (1) and the upper bearing shell (2) are made of cast aluminum alloy, and both the lower bearing shell (1) and the upper bearing shell (2) have an anodized heat dissipation layer on their outer surfaces.

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