Wear-resistant brake disc easy to dissipate heat

Abstract

The application relates to the technical field of brake discs, in particular to a wear-resistant and easy-to-heat-dissipating brake disc which comprises a center connecting body, a radial heat conduction sheet group, an annular rib plate structure and a surface strengthening layer. The radial heat conduction sheet group improves the heat dissipation efficiency through embedded heat conduction metal particles and micro-groove structures, the annular rib plate structure optimizes the airflow path by using arc-shaped flow guide grooves, and the surface strengthening layer improves the wear resistance by using tungsten carbide and nickel-based alloy composite materials. The application can significantly improve the heat dissipation performance and wear resistance of the brake disc, prolong the service life, meet the high-frequency braking demand, reduce the maintenance difficulty and improve the braking reliability.

Description

Technical Field

[0001] This utility model belongs to the field of automotive braking technology, specifically a wear-resistant and heat-dissipating brake disc. Background Technology

[0002] In the field of automotive braking systems, with the continuous improvement of vehicle performance, brake discs, as key components, face increasingly higher requirements in terms of heat dissipation and wear resistance. The performance of brake discs directly affects the braking effect and safety of a vehicle, especially under high-frequency braking and extreme conditions, where their heat dissipation and durability are particularly important. To meet these demands, various improved designs have been proposed in existing technologies to enhance the operational stability of brake discs.

[0003] A search revealed a motor vehicle brake disc with publication number CN103671642B, published on January 20, 2016. This design achieves good ventilation and heat dissipation performance by incorporating streamlined raised sections on both sides of the brake disc, combined with heat dissipation holes. Furthermore, this structure can improve airflow efficiency to some extent, thereby reducing temperature accumulation during brake disc operation. However, due to the relatively simple design of its heat dissipation holes and raised sections, it is difficult to adequately address high temperatures under extreme conditions, resulting in limited heat dissipation effectiveness. Simultaneously, this design does not optimize the brake disc material, leading to insufficient wear resistance and susceptibility to surface damage under high-frequency braking scenarios, thus affecting the overall service life.

[0004] Therefore, based on the above issues, there is still room for further improvement in existing technologies. Utility Model Content

[0005] The purpose of this invention is to provide a wear-resistant and heat-dissipating brake disc to solve the problems of insufficient heat dissipation and poor wear resistance in existing technologies. A wear-resistant and heat-dissipating brake disc includes: a central connecting body; a radial heat-conducting plate assembly connected to the central connecting body for rapidly conducting heat radially to the outer edge of the brake disc; an annular rib structure connected to the radial heat-conducting plate assembly and disposed in the outer peripheral area of ​​the brake disc to enhance airflow and improve heat dissipation efficiency; and a surface reinforcement layer covering the working surface of the brake disc, made of a high-hardness composite material, to improve the wear resistance of the brake disc.

[0006] By adopting the above technical solutions, the radial heat-conducting fin assembly design can significantly accelerate the heat transfer from the center of the brake disc to the outer edge, avoiding heat concentration and high temperature problems. The annular rib structure, through its unique geometry, optimizes the airflow path, thereby improving heat dissipation. The surface reinforcement layer uses a high-hardness composite material, which effectively improves the wear resistance of the brake disc's working surface and exhibits stronger durability in high-frequency braking scenarios.

[0007] The central connector, the radial heat-conducting fin assembly, and the annular rib structure are integrally formed through a casting process. This integral structure consists of a base material and embedded heat-conducting metal particles. The base material is cast iron, and the embedded heat-conducting metal particles are copper or aluminum particles, with the embedded heat-conducting metal particles accounting for 15% to 20% of the volume. By integrally casting the central connector, radial heat-conducting fin assembly, and annular rib structure, assembly steps are reduced, while the overall strength and stability of the brake disc are enhanced. The addition of embedded heat-conducting metal particles significantly improves the thermal conductivity of the brake disc, allowing heat to be distributed more evenly across the entire brake disc and reducing the occurrence of localized overheating.

[0008] The radial heat-conducting fin assembly comprises multiple heat-conducting fin units, each with a thickness that gradually decreases from the center to the edge. Each fin unit has a microgroove structure on its surface, which increases the air contact area and promotes heat dissipation. The varying thickness of the heat-conducting fin units allows for more efficient heat diffusion from the center to the edge, while the microgroove structure further increases the contact area between the fin units and the air, thus accelerating the heat dissipation process. This design not only improves heat dissipation efficiency but also reduces the risk of brake disc deformation due to excessive temperature.

[0009] The inner side of the annular rib structure is provided with an arc-shaped guide channel, the cross-sectional shape of which is semi-circular, to guide airflow in a specific direction. The design of the arc-shaped guide channel optimizes the airflow trajectory, allowing air to pass more smoothly through the annular rib structure, thereby carrying away more heat. Furthermore, the semi-circular cross-sectional shape of the arc-shaped guide channel reduces air resistance while ensuring smooth airflow, further improving heat dissipation.

[0010] The surface reinforcement layer is attached to the working surface of the brake disc via plasma spraying. The thickness of the surface reinforcement layer is 0.2 mm to 0.5 mm, and its material composition includes tungsten carbide and a nickel-based alloy, with tungsten carbide comprising 60% to 70% of the mass and the nickel-based alloy comprising 30% to 40% of the mass. The plasma spraying process ensures strong adhesion between the surface reinforcement layer and the brake disc substrate, while the material composition of the surface reinforcement layer provides excellent hardness and wear resistance. This design significantly extends the service life of the brake disc, exhibiting enhanced durability, especially under high-frequency braking conditions.

[0011] The central connector has a mounting hole at its center, and the inner wall of the mounting hole is threaded for bolt connection with the vehicle wheel hub. The threaded design of the mounting hole allows the brake disc to be securely connected to the vehicle wheel hub via bolts, enhancing the installation stability of the brake disc. Furthermore, the threaded structure facilitates the disassembly and maintenance of the brake disc, improving ease of use.

[0012] The outer end of the radial heat-conducting fin assembly is provided with a protruding structure, which connects to the inner side of the annular rib structure. The protruding structure has a trapezoidal cross-sectional shape to enhance the connection strength between the two. This protruding structure design not only improves the connection strength between the radial heat-conducting fin assembly and the annular rib structure but also optimizes the heat transfer efficiency from the heat-conducting fin assembly to the annular rib structure. The trapezoidal cross-sectional shape further enhances the structure's shear resistance, ensuring the reliability of the brake disc under extreme operating conditions.

[0013] In summary, this utility model includes at least one of the following beneficial technical effects: 1. The overall structural design with embedded heat-conducting metal particles significantly improves the thermal conductivity of the brake disc, enabling heat to be distributed more evenly and avoiding local overheating; 2. The arc-shaped guide groove and microgroove structure optimize the airflow path and increase the air contact area, greatly improving heat dissipation efficiency and meeting the heat dissipation requirements under extreme working conditions; 3. The surface reinforcement layer uses a composite material of tungsten carbide and nickel-based alloy, which significantly improves the wear resistance of the brake disc, extends its service life, and adapts to high-frequency braking scenarios. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the entire utility model;

[0015] Figure 2 This is a schematic diagram of the component structure of this utility model;

[0016] Figure 3 The present invention relates to the thickness variation design and microgroove structure of the radial heat-conducting plate assembly;

[0017] Figure 4 This is a partially enlarged schematic diagram of the annular rib structure of this utility model.

[0018] The attached figures are labeled as follows:

[0019] 1. Central connector; 2. Radial heat-conducting fin assembly; 3. Annular rib structure; 4. Arc-shaped flow channel; 5. Protruding structure; 6. Microgroove; 7. Mounting hole. Detailed Implementation

[0020] This utility model relates to a wear-resistant and heat-dissipating brake disc, the structure and function of which are described in detail below. Figures 1 to 3 The accompanying drawings will be used to illustrate the specific design, connection relationships, and working principles of each component.

[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] 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, and 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 relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Example 1

[0025] In this embodiment, as Figure 2 As shown, the overall structure of the brake disc includes a central connector 1, a radial heat-conducting plate group 2, an annular rib structure 3, and a surface reinforcement layer.

[0026] The central connector 1, as the core component of the brake disc, is located in the central area of ​​the entire structure. Its main function is to connect to the vehicle wheel hub and transmit braking force. A mounting hole 7 is provided in the center of the central connector 1. The inner wall of the mounting hole 7 is machined with a threaded structure for bolt connection with the vehicle wheel hub. This threaded design ensures the brake disc is securely fixed to the vehicle wheel hub while facilitating disassembly and maintenance. The central connector 1, through a casting process, forms an integral structure with the radial heat-conducting plate assembly 2 and the annular rib structure 3, ensuring the overall strength and stability of the brake disc.

[0027] Example 2

[0028] Radial heat-conducting sheet group 2 is set up based on Example 1.

[0029] In this embodiment, the radial heat-conducting sheet assembly 2 is connected to the central connector 1, and its main function is to rapidly conduct heat radially to the outer edge of the brake disc. Figure 3 As shown, the radial heat-conducting plate group 2 consists of multiple heat-conducting plate units, each with a thickness that gradually decreases from the center to the edge. This thickness variation design allows heat to diffuse more efficiently from the center to the edge.

[0030] Furthermore, the surface of the heat-conducting plate unit is machined with microgrooves 6, which increase the air contact area and thus promote heat dissipation. The outer end of the radial heat-conducting plate assembly 2 is provided with a protruding structure 5, such as... Figure 3 As shown, the protruding structure 5 is connected to the inner side of the annular rib structure 3, and the cross-sectional shape of the protruding structure 5 is trapezoidal. This design not only enhances the connection between the radial heat-conducting fin assembly 2 and the annular rib structure 3, but also optimizes the heat transfer efficiency from the heat-conducting fin assembly 2 to the annular rib structure 3. The trapezoidal cross-sectional shape further enhances the structure's shear resistance, ensuring the reliability of the brake disc under extreme operating conditions.

[0031] Example 3

[0032] Based on Example 1, an annular rib structure 3 is provided.

[0033] In this embodiment, the annular rib structure 3 is located on the outer periphery of the brake disc, and its main function is to enhance airflow and improve heat dissipation efficiency. An arc-shaped guide groove 4 is provided on the inner side of the annular rib structure 3, such as... Figure 4 As shown, the cross-sectional shape of the arc-shaped guide channel 4 is semi-circular. The design of the arc-shaped guide channel 4 optimizes the airflow trajectory, allowing air to pass more smoothly through the annular rib structure 3, thereby carrying away more heat.

[0034] In addition, the semi-circular cross-sectional shape of the arc-shaped guide channel 4 can reduce air resistance while ensuring smooth airflow, thereby further improving the heat dissipation effect.

[0035] In addition, a surface-strengthening layer covers the working surface of the brake disc, its main function being to improve the brake disc's wear resistance. The surface-strengthening layer is attached to the working surface of the brake disc using a plasma spraying process, with a thickness of 0.2mm to 0.5mm. The material composition of the surface-strengthening layer includes tungsten carbide and a nickel-based alloy, with tungsten carbide accounting for 60% to 70% by mass and the nickel-based alloy accounting for 30% to 40% by mass. The plasma spraying process ensures strong adhesion between the surface-strengthening layer and the brake disc substrate, while the material composition of the surface-strengthening layer gives it excellent hardness and wear resistance. This design significantly extends the service life of the brake disc, exhibiting enhanced durability, especially under high-frequency braking scenarios.

[0036] The central connector 1, radial heat-conducting fin assembly 2, and annular rib structure 3 are formed into an integral structure through a casting process. The overall structure consists of a base material and embedded heat-conducting metal particles. The base material is cast iron, and the embedded heat-conducting metal particles are copper or aluminum particles, with the embedded heat-conducting metal particles accounting for 15% to 20% of the volume. This design reduces assembly steps while enhancing the overall strength and stability of the brake disc. The addition of embedded heat-conducting metal particles significantly improves the thermal conductivity of the brake disc, allowing heat to be distributed more evenly across the entire brake disc and reducing the occurrence of localized overheating.

[0037] In practical applications, when a vehicle brakes, the friction between the brake disc and brake pads generates a large amount of heat. This heat is first transferred to the radial heat-conducting fin assembly 2 through the surface reinforcement layer, and then the radial heat-conducting fin assembly 2 rapidly conducts the heat radially to the outer edge of the brake disc. Because the thickness of the radial heat-conducting fin assembly 2 gradually decreases from the center to the edge, and its surface is machined with a microgroove structure 6, the heat can be diffused and dissipated into the air more efficiently. At the same time, the annular rib structure 3 optimizes the airflow trajectory through its inner arc-shaped guide groove 4, allowing air to pass through the annular rib structure 3 more smoothly, thereby carrying away more heat.

[0038] As can be seen from the above specific embodiments, the brake disc of this utility model achieves efficient heat dissipation and excellent wear resistance through reasonable structural design and material selection. This design not only meets the needs of use under extreme working conditions, but also significantly extends the service life of the brake disc and improves the safety and reliability of the vehicle.

[0039] In summary, when the vehicle brakes, the brake disc achieves efficient heat transfer and dissipation through the aforementioned structural design. The surface reinforcement layer improves the brake disc's wear resistance, and the radial heat-conducting fin assembly 2 and the annular rib structure 3 work together to optimize heat dissipation efficiency.

[0040] It should be noted that all electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device that can be controlled by a computer or other means. The detailed description of known functions and known components is omitted in the specific implementation of this disclosure. In order to ensure the compatibility of the device, the operating methods used are consistent with the parameters of commercially available instruments.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A wear-resistant and heat-dissipating brake disc, characterized in that: Including the central connector (1); Radial heat-conducting sheet assembly (2) is connected to the central connector (1); The annular rib structure (3) is connected to the radial heat-conducting plate group (2) and is disposed in the outer peripheral area of ​​the brake disc; A surface-reinforcing layer is applied to the working surface of the brake disc.

2. The wear-resistant and heat-dissipating brake disc according to claim 1, characterized in that: The central connector (1), the radial heat-conducting plate group (2), and the annular rib structure (3) are formed into an integral structure through a casting process. The integral structure consists of a substrate and embedded heat-conducting metal particles, wherein the substrate is made of cast iron and the embedded heat-conducting metal particles are copper or aluminum particles.

3. The wear-resistant and heat-dissipating brake disc according to claim 1, characterized in that: The radial heat-conducting sheet group (2) includes multiple heat-conducting sheet units, the thickness of each heat-conducting sheet unit gradually decreases from the center to the edge, and microgroove (6) structures are processed on the surface of the heat-conducting sheet unit.

4. The wear-resistant and heat-dissipating brake disc according to claim 1, characterized in that: The inner side of the annular rib structure (3) is provided with an arc-shaped guide groove (4), and the cross-sectional shape of the arc-shaped guide groove (4) is semi-circular.

5. A wear-resistant and heat-dissipating brake disc according to claim 1, characterized in that, The surface strengthening layer is attached to the working surface of the brake disc by plasma spraying. The thickness of the surface strengthening layer is 0.2 mm to 0.5 mm, and the material composition of the surface strengthening layer includes tungsten carbide and nickel-based alloy.

6. A wear-resistant and heat-dissipating brake disc according to claim 1, characterized in that, The central connector (1) has a mounting hole (7) in the middle, and the inner wall of the mounting hole (7) is machined with a thread structure.

7. A wear-resistant and heat-dissipating brake disc according to claim 1, characterized in that, The outer end of the radial heat-conducting plate group (2) is provided with a protruding structure (5), which is connected to the inner side of the annular rib structure (3), and the cross-sectional shape of the protruding structure (5) is trapezoidal.

Images