Forced heat dissipation high-speed train brake disc capable of reducing air pumping energy consumption
By designing a three-layer heat dissipation structure on the brake disc of high-speed trains and optimizing the heat dissipation rib arrangement, the problem of difficulty in dissipating heat in high-temperature environments is solved, and more efficient braking and longer service life are achieved, ensuring that The train operates safely in high-altitude long ramp environments.
Patent Information
- Application Number
- CN202421270015.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-06-05
Smart Images
Figure CN222254822U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rail vehicle braking, in particular to a forced heat dissipation high-speed train brake disc capable of reducing pump wind energy consumption. Background Art
[0002] my country's railway trains currently generally use friction braking, which converts the train's kinetic energy into heat energy for dissipation through friction pairs. However, once the braking power exceeds the limit, if the heat generated cannot be dissipated in time, the temperature of the friction pair will continue to rise, posing a threat to the safety of train operation. This challenge is even more prominent under extreme conditions of high-altitude and long-distance slopes.
[0003] First, the thin air in high altitude areas will affect the heat dissipation effect of traditional brake systems. After long-term high-intensity braking, the temperature of traditional brake discs will rise rapidly, but due to the thinness of the surrounding air, the heat dissipation effect is greatly reduced, making it difficult for the brake disc temperature to drop quickly, which in turn affects the braking efficiency and durability.
[0004] Secondly, when braking on long downhill sections, the braking power required is greater, the wheels and brake discs are subjected to higher temperatures, and the braking situation is more severe. This long-distance, long-term friction braking will cause the brake system to continue to heat up. High temperature will cause the friction coefficient between the brake disc surface and the brake lining to decrease, thereby reducing braking efficiency, increasing the wear rate of the brake lining, and may even cause safety hazards such as brake failure. Traditional brake discs are difficult to effectively cope with such high temperature conditions when facing the above service conditions. Utility Model Content
[0005] In view of the above problems, the utility model aims to provide a forced heat dissipation high-speed train brake disc that reduces pump wind energy consumption, and is designed to cope with the extreme service conditions of high altitudes, long slopes, and high-speed trains, and to ensure that the braking system can operate stably and reliably in such environments; the utility model can not only effectively reduce the temperature of the braking system and improve the braking efficiency, but also extend the service life of the braking system and ensure the safety of train driving.
[0006] The technical solution of the utility model is as follows:
[0007] A forced heat dissipation high-speed train brake disc for reducing pump wind energy consumption comprises a connected disc body and a flange plate, wherein the disc body has a disc body friction surface and a disc body back surface, the disc body is provided with a disc body center hole, the flange plate is provided with a flange hole, the flange plate is provided on one side of the disc body back surface, and a three-layer heat dissipation structure is provided on the disc body back surface, the three-layer heat dissipation structure comprises an outer heat dissipation rib, an inner heat dissipation rib and a pit structure, the shapes of the outer heat dissipation rib and the inner heat dissipation rib are elliptical, capsule-shaped and concave capsule-shaped; the outer heat dissipation rib and the inner heat dissipation rib are arranged in two ways: uniform arrangement and scattered arrangement; the pit structure is provided on the surface of the flange plate opposite to the disc body back surface, the pit structure is circular and arranged in a uniform arrangement.
[0008] Preferably, the outer heat dissipation ribs are tangential heat dissipation ribs, and the long axes of the tangential heat dissipation ribs are arranged perpendicular to the diameter direction of the disk body; the inner heat dissipation ribs are radial heat dissipation ribs, and the long axes of the radial heat dissipation ribs are arranged along the diameter direction of the disk body.
[0009] Preferably, the center distance between the outer heat dissipation ribs in two adjacent weeks, determined by the heat dissipation rib cross-section, is △R1=22~28mm; the center distance between the heat dissipation rib cross-section in the transition zone between the outer heat dissipation rib and the inner heat dissipation rib is △R2=28~32mm; the center distance between the inner heat dissipation ribs in two adjacent weeks is △R3=18~22mm; the outer heat dissipation ribs and the inner heat dissipation ribs in different weeks are staggered; the angle α1 between the center of the cross-section of two adjacent heat dissipation ribs in the same week and the center of the disk body is 7°~9°.
[0010] Preferably, the center distance between the outer heat dissipation ribs in two adjacent weeks, determined by the cross-section of the heat dissipation ribs, is △R4=32mm~38mm; the center distance determined by the cross-section of the heat dissipation ribs in the transition zone between the outer heat dissipation ribs and the inner heat dissipation ribs is △R5=32mm~38mm; the angle α2 between the lines connecting the cross-sectional centers of two adjacent outer heat dissipation ribs in the same circumference and the center of the disk body is 6°~12°; the outer heat dissipation ribs are arranged in a scattered manner, with one scattering area occupying 30°, and twelve scattering areas evenly distributed on the circumference; the inner heat dissipation ribs are evenly distributed around the circumference, and the inner and outer heat dissipation ribs are staggered between different circumferences.
[0011] Preferably, the pit structure has a pit diameter d1=10mm-12mm and a depth h=2mm-3mm.
[0012] Preferably, the pits are arranged in a radial direction along the back side of the disk body to form a plurality of pit columns, and the pits in each pit column are spaced apart by 1 mm to 2 mm; the pit columns are evenly distributed in the gaps of the inner heat dissipation ribs.
[0013] Preferably, the outer heat dissipation ribs and the inner heat dissipation ribs are elliptical columnar heat dissipation ribs, the outer heat dissipation ribs are evenly arranged or scattered, the inner heat dissipation ribs are evenly arranged, and the ratio of the short axis a to the long axis b of the elliptical columnar heat dissipation ribs is a / b=0.5~1.
[0014] Preferably, the outer heat dissipation ribs and the inner heat dissipation ribs are capsule-shaped columnar heat dissipation ribs, the outer heat dissipation ribs are evenly arranged or scattered, and the inner heat dissipation ribs are evenly arranged; the ratio of the semicircular diameter at both ends of the capsule-shaped columnar heat dissipation ribs to the distance from their center d2=0.5~0.7.
[0015] Preferably, the outer layer heat dissipation ribs are uniformly arranged or scatteredly arranged concave capsule-shaped columnar heat dissipation ribs, and the inner layer heat dissipation ribs are uniformly arranged capsule-shaped columnar heat dissipation ribs.
[0016] Preferably, the long sides of the concave capsule-shaped columnar heat dissipation ribs are provided with inwardly recessed cavities, the ratio of the semicircular diameter at both ends of the concave capsule-shaped columnar heat dissipation ribs to the distance from their centers d2=0.5~0.7, the semicircular connection at both ends is an arc, and the radius of the arc R=25mm~35mm.
[0017] The beneficial effects of the utility model are:
[0018] 1. The utility model sets a three-layer heat dissipation structure that is symmetrical along the center of the disc body, so that the brake disc can reduce the pump wind resistance during operation, reduce energy consumption, accelerate the rapid diffusion of friction heat, and avoid excessive temperature rise of the friction disc;
[0019] 2. The utility model can realize multi-directional forced airflow guidance by setting tangential heat dissipation ribs and radial heat dissipation ribs, guide the air on the side of the brake disc body to quickly diffuse and flow outside the disc body in radial, tangential and even axial directions, accelerate the convection speed during braking, realize continuous ventilation and heat dissipation of the brake disc, and accelerate the dissipation of heat generated by friction braking;
[0020] 3. The utility model can increase the heat dissipation area, optimize the airflow guidance and improve the convection heat transfer coefficient by setting the elliptical columnar heat dissipation ribs, thereby effectively improving the heat dissipation efficiency and performance of the brake disc;
[0021] 4. The utility model increases the average convection heat transfer coefficient of the brake disc by providing capsule-shaped columnar heat dissipation ribs, and utilizes the semicircular design at both ends to reduce the accompanying air resistance moment, thereby reducing the pump wind resistance;
[0022] 5. The utility model is provided with concave capsule-shaped columnar heat dissipation ribs, which can increase the heat dissipation area and speed up the air flow rate while maintaining a low air resistance moment, thereby achieving a more effective heat dissipation effect and reducing the weight of the brake disc;
[0023] 6. The utility model replaces the traditional disc surface heat dissipation groove by arranging a pit structure, thereby solving the problems of stress concentration in the heat dissipation groove of the traditional brake disc during braking and accumulation of wear debris in the heat dissipation groove; at the same time, it increases the surface area of the brake disc in contact with the air, which can promote the formation of turbulence in air flow, thereby improving the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0025] Figure 1 This is a schematic diagram of the structure of the forced heat dissipation high-speed train brake disc that reduces the energy consumption of pump wind according to the utility model;
[0026] Figure 2 It is a cross-sectional schematic diagram of an embodiment of the utility model when the heat dissipation ribs are arranged in a uniform manner;
[0027] Figure 3 It is a cross-sectional schematic diagram of an embodiment of the utility model when the heat dissipation rib arrangement mode is a scattering arrangement;
[0028] Figure 4 An enlarged cross-sectional view of a pit of a pit structure of the utility model in one embodiment;
[0029] Figure 5 It is a cross-sectional schematic diagram of a full elliptical uniformly distributed heat dissipating rib of the utility model in one embodiment;
[0030] Figure 6 It is an isometric view of a full elliptical uniformly distributed heat dissipating rib of the utility model in one embodiment;
[0031] Figure 7 It is a cross-sectional isometric view of a full elliptical uniformly distributed heat dissipating rib of the utility model in one embodiment;
[0032] Figure 8 It is a cross-sectional schematic diagram of a full elliptical scattering type heat dissipation rib of the utility model in one embodiment;
[0033] Fig. 9 It is an isometric view of a full elliptical scattering type heat dissipation rib of the utility model in one embodiment;
[0034] Fig.10 It is a cross-sectional isometric view of a full elliptical scattering type heat dissipation rib of the utility model in one embodiment;
[0035] Fig.11 It is a cross-sectional schematic diagram of a fully capsule uniformly distributed heat dissipation rib of the utility model in one embodiment;
[0036] Fig.12 It is an isometric view of the full-capsule uniformly distributed heat dissipation rib of the utility model in one embodiment;
[0037] Fig.13 It is a cross-sectional isometric view of a fully capsule uniformly distributed heat dissipation rib of the utility model in one embodiment;
[0038] Fig.14 It is a cross-sectional schematic diagram of a full-capsule scattering type heat dissipation rib of the utility model in one embodiment;
[0039] Fig.15 It is an isometric view of a full-capsule scattering type heat dissipation rib of the utility model in one embodiment;
[0040] Fig.16 It is a cross-sectional isometric view of a full-capsule scattering type heat dissipation rib of the utility model in one embodiment;
[0041] Fig.17 It is a cross-sectional schematic diagram of the concave capsule uniformly distributed heat dissipation rib of the utility model in one embodiment;
[0042] Fig.18 It is an isometric view of the concave capsule uniformly distributed heat dissipation rib of the utility model in one embodiment;
[0043] Fig.19 It is a cross-sectional isometric view of the concave capsule uniformly distributed heat dissipation rib of the utility model in one embodiment;
[0044] Fig. 20 It is a cross-sectional schematic diagram of a concave capsule scattering type heat dissipation rib of the utility model in one embodiment;
[0045] Fig.21 It is an isometric view of a concave capsule scattering type heat dissipation rib of the utility model in one embodiment;
[0046] Fig. 22 It is a cross-sectional isometric view of a concave capsule scattering type heat dissipation rib of the utility model in one embodiment.
[0047] Numbers in the figure: 1-disk body, 2-heat dissipation rib, 3-pit structure, 4-pit row, 5-flange hole, 6-center hole of disk body, 7-friction surface of disk body, 8-back side of disk body, 9-flange, 10-elliptical columnar heat dissipation rib, 11-capsule-shaped columnar heat dissipation rib, 12-concave capsule-shaped columnar heat dissipation rib. DETAILED DESCRIPTION
[0048] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0049] It should be noted that, in the absence of conflict, the embodiments in this application and the technical features in the embodiments may be combined with each other.
[0050] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.
[0051] In the present invention, unless otherwise stated, the terms "first", "second", etc. are used to distinguish similar objects, rather than to describe a specific order or sequence. The terms used in this way should be understood; the terms "upper", "lower", "left", "right", etc. are usually used in relation to the directions shown in the drawings, or in relation to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inner", "outer", etc. refer to the inside and outside relative to the outline of each component itself. However, the above-mentioned directional words are not used to limit the present invention.
[0052] like Figure 1 As shown, a forced heat dissipation high-speed train brake disc for reducing pump wind energy consumption includes a connected disc body 1 and a flange 9, the disc body 1 has a disc body friction surface 7 and a disc body back side 8, the disc body 1 is provided with a disc body center hole 6, the flange 9 is provided with a flange hole 5, the flange 9 is arranged on one side of the disc body back side 8, and a three-layer heat dissipation structure is arranged on the disc body back side 8, the three-layer heat dissipation structure includes an outer heat dissipation rib, an inner heat dissipation rib and a pit structure 3, the shapes of the outer heat dissipation rib and the inner heat dissipation rib are elliptical, capsule-shaped and concave capsule-shaped; the arrangement modes of the outer heat dissipation rib and the inner heat dissipation rib are uniform arrangement and scattered arrangement; the surface of the flange 9 opposite to the disc body back side 8 is provided with the pit structure 3, the pit structure 3 is circular and the arrangement mode is uniform arrangement.
[0053] In the above example, the shape and arrangement of the heat dissipation ribs 2 were adjusted to study the effects of these variables on the heat dissipation performance of the brake disc. In this process, multiple key parameters such as the shape and position of the heat dissipation ribs 2 were comprehensively considered, and a four-factor three-level orthogonal experimental design method was applied for system evaluation. The heat dissipation power and pump air power of the brake disc were used as the core evaluation criteria to determine the optimal parameter configuration range.
[0054] By performing an orthogonal test range analysis on the simulation results, the optimal combination of each parameter in the embodiment is accurately determined. By analyzing the simulation data of dozens of heat dissipation ribs 2 with different structures, it is found that as the number of subdivisions of the heat dissipation ribs 2 increases, the overall average convection heat transfer coefficient increases, which means that the heat dissipation performance is improved. However, it is also observed that if the heat dissipation ribs 2 are too dense, it may lead to an increase in the weight of the brake disc, which may bring other adverse effects. Therefore, the heat dissipation ribs 2 are arranged as the outer layer heat dissipation ribs and the inner layer heat dissipation ribs, and the heat dissipation efficiency is improved as much as possible without increasing the weight as much as possible, so as to enhance the overall performance of the brake disc.
[0055] By setting the three-layer heat dissipation structure, the brake disc can reduce the pump wind resistance and energy consumption during operation; by adding the regularly arranged pit structure 3, not only the heat dissipation area is increased, but also the speed of forced convection is effectively increased. In addition, the brake disc surface of the utility model does not need to be ventilated, so that the overall structural strength is optimized, and a high and stable friction coefficient can be obtained during the braking process. The pit structure 3 increases the air flow speed of the air inlet while increasing the heat dissipation area.
[0056] In a specific embodiment, the disk body 1 is provided with bolt holes (not shown in the figure), and the disk body 1 is connected to the flange 9 by bolts.
[0057] In the above embodiment, the disc body 1 is connected to the flange 9 by bolts, and the design of the bolt holes allows for quick installation and removal of the brake disc, which makes the heat dissipation rib structure easy to process and the brake disc as a whole easy to assemble. The disc body 1 is firmly connected to the flange 9 by the bolts, which enhances the stability and reliability of the overall structure. The bolt connection method provides flexibility, so that the brake disc can be adapted to a variety of different types of flanges or brake systems.
[0058] In a specific embodiment, the outer heat dissipation ribs are tangential heat dissipation ribs, and the long axes of the tangential heat dissipation ribs are arranged perpendicular to the diameter direction of the disk body 1; the inner heat dissipation ribs are radial heat dissipation ribs, and the long axes of the radial heat dissipation ribs are arranged along the diameter direction of the disk body 1.
[0059] In the above embodiment, during the braking process, by providing the tangential heat dissipation ribs and the radial heat dissipation ribs, not only the forced guidance of the radial and tangential airflows is achieved, but also the air is quickly diffused from the side of the brake disc to the outside along these directions and the axial direction. This design generates high-speed airflow, effectively speeding up the convection speed during braking, thereby continuously ventilating and dissipating the brake disc, and accelerating the dissipation of heat generated by friction braking.
[0060] Comparative analysis of simulation results shows that when the inner heat dissipation ribs of the brake disc are designed as radial heat dissipation ribs, the average convective heat transfer coefficient of the brake disc increases significantly with the increase of the train running speed, which means that the heat dissipation performance is significantly improved under high-speed running conditions. The radial heat dissipation ribs can provide a larger windward area, which helps to improve the heat dissipation efficiency. In order to reduce the pumping effect, the usual practice is to close the air inlet. Through the fitting analysis of the simulation data, when the angle of the heat dissipation rib 2 is between 69° and 101°, the pumping resistance will decrease. In order to adapt to the different shapes of heat dissipation ribs 2 and achieve the best effect, 90° was finally selected as the design angle of the heat dissipation rib 2. This angle allows the outer heat dissipation ribs to be arranged in a tangential manner, optimizing the air flow and reducing the pumping effect while maintaining efficient heat dissipation performance.
[0061] In a specific embodiment, the center distance between the outer heat dissipation ribs in two adjacent weeks, determined by the cross-section of the heat dissipation ribs, is △R1=22~28mm; the center distance between the heat dissipation ribs in the transition zone between the outer heat dissipation ribs and the inner heat dissipation ribs, is △R2=28~32mm; the center distance between the inner heat dissipation ribs in two adjacent weeks, is △R3=18~22mm; the outer heat dissipation ribs and the inner heat dissipation ribs in different weeks are staggered; the angle α1 between the center of the cross-section of two adjacent heat dissipation ribs in the same week and the center of the disk body 1 is 7°~9°.
[0062] In the above embodiments, the structural features when the heat dissipation ribs are evenly arranged are described, such as Figure 2 shown.
[0063] In a specific embodiment, the center distance △R4 determined by the cross section of the heat dissipating ribs between two adjacent outer heat dissipating ribs is 32mm~38mm; the center distance △R5 determined by the heat dissipating rib cross section in the transition zone between the outer heat dissipating ribs and the inner heat dissipating ribs is 32mm~38mm; the angle α2 between the line connecting the cross-sectional centers of two adjacent outer heat dissipating ribs of the same circumference and the center of the disk body 1 is 6°~12°; the outer heat dissipating ribs are arranged in a scattered manner, with one scattering area occupying 30°, and twelve scattering areas evenly distributed on the circumference; the inner heat dissipating ribs are evenly distributed on the circumference, and the inner and outer heat dissipating ribs are staggered between different circumferences.
[0064] In the above embodiment, the structural features of the heat dissipation ribs 2 when they are arranged in a scattered manner are described, such as Figure 3 shown.
[0065] In a specific embodiment, the pit diameter d1 of the pit structure 3 is 10 mm to 12 mm, and the depth h is 2 mm to 3 mm. The pits are arranged in a radial direction along the back side 8 of the disk body to form a plurality of pit columns 4, and the interval between the pits in each pit column 4 is 1 mm to 2 mm; the pit columns 4 are evenly distributed in the gaps of the inner heat dissipation ribs. When the heat dissipation ribs 2 are evenly arranged, the pit columns 4 are evenly arranged along the circumference. When the heat dissipation ribs 2 are scattered, there is a group of pit structures 3 between every two scattering areas.
[0066] In the above embodiment, the cross-sectional enlarged view of the pit is as follows: Figure 4 As shown, the cross-sectional curve of the pit is half an ellipse, and the pit with an elliptical cross-section helps to disperse the stress that may be generated by the brake disc during braking through a smooth transition radius, thereby reducing the degree of stress concentration and avoiding material fatigue and cracks. The shallow depth design of the pit ensures that the cross-sectional material of the brake disc maintains sufficient thickness, which will not weaken the overall strength of the brake disc and ensure the stability and durability of the structure.
[0067] In a specific embodiment, the outer heat dissipation ribs and the inner heat dissipation ribs are elliptical columnar heat dissipation ribs 10, the outer heat dissipation ribs are evenly arranged or scattered, the inner heat dissipation ribs are evenly arranged, and the ratio of the short axis a to the long axis b of the elliptical columnar heat dissipation ribs 10 is a / b=0.5~1.
[0068] In the above embodiment, when the outer heat dissipation ribs and the inner heat dissipation ribs are both elliptical columnar heat dissipation ribs 10, the outer heat dissipation ribs and the inner heat dissipation ribs are evenly arranged to obtain full elliptical uniformly distributed heat dissipation ribs, such as Figure 5-7 As shown; when the outer heat dissipation ribs and the inner heat dissipation ribs are both elliptical columnar heat dissipation ribs 10, the outer heat dissipation ribs are scattered, and the inner heat dissipation ribs are evenly arranged, a full elliptical scattering type heat dissipation rib is obtained, such as Figure 8-10 As shown;
[0069] In a specific embodiment, the outer heat dissipation ribs and the inner heat dissipation ribs are capsule-shaped columnar heat dissipation ribs 11, the outer heat dissipation ribs are evenly arranged or scattered, and the inner heat dissipation ribs are evenly arranged; the ratio of the semicircular diameter at both ends of the capsule-shaped columnar heat dissipation ribs 11 to the distance between their centers is d2=0.5~0.7.
[0070] In the above embodiment, when the outer heat dissipation ribs and the inner heat dissipation ribs are both capsule-shaped columnar heat dissipation ribs 11, the outer heat dissipation ribs and the inner heat dissipation ribs are evenly arranged to obtain full-capsule uniformly distributed heat dissipation ribs, such as Figure 11-13As shown; when the outer heat dissipation ribs and the inner heat dissipation ribs are both capsule-shaped columnar heat dissipation ribs 11, the outer heat dissipation ribs are scattered, and the inner heat dissipation ribs are evenly arranged, a full capsule scattering type heat dissipation rib is obtained, such as Figure 14-16 As shown; by providing the capsule-shaped columnar heat dissipation ribs 11, the average convection heat transfer coefficient of the brake disc is increased, and the curved surface shape at both ends is used to reduce the accompanying air resistance moment, thereby reducing the pump wind resistance.
[0071] In a specific embodiment, the outer heat dissipation ribs are uniformly or scatteredly arranged concave capsule-shaped columnar heat dissipation ribs 12, and the inner heat dissipation ribs are uniformly arranged capsule-shaped columnar heat dissipation ribs 11. Both sides of the long sides of the concave capsule-shaped columnar heat dissipation ribs 12 are provided with inwardly concave cavities, and the ratio of the semicircular diameter at both ends of the concave capsule-shaped columnar heat dissipation ribs 12 to the distance between the semicircular diameter and the center thereof is d2=0.5-0.7, and the semicircular connection at both ends is an arc, and the radius of the arc is 25mm-35mm.
[0072] In the above embodiment, when the outer heat dissipation ribs are uniformly arranged concave capsule-shaped columnar heat dissipation ribs 12, and the inner heat dissipation ribs are uniformly arranged capsule-shaped columnar heat dissipation ribs 11, concave capsule uniformly distributed heat dissipation ribs are obtained. Figure 17-19 When the outer heat dissipation ribs are scattered concave capsule-shaped columnar heat dissipation ribs 12, and the inner heat dissipation ribs are uniformly arranged capsule-shaped columnar heat dissipation ribs 11, a concave capsule scattering heat dissipation rib is obtained, such as Figure 20-22 By providing the concave capsule-shaped columnar heat dissipation rib 12, the two sides of the long axis of the capsule-shaped columnar heat dissipation rib 11 are provided with inwardly concave cavities. The design of the concave cavities can greatly increase the heat dissipation area of the entire heat dissipation rib 2, while accelerating the air flow rate to obtain a larger convection heat flow; at the same time, the concave capsule-shaped columnar heat dissipation rib 12 also reduces the weight of the brake disc.
[0073] In a specific embodiment, the disc body 1 and the flange 9 are both made of aluminum-based composite materials. Hard reinforcing materials such as ceramic particles or fibers are added to the aluminum-based composite materials.
[0074] In the above embodiment, the aluminum-based composite material is relatively light. By adopting the aluminum-based composite material, the overall weight of the train can be reduced, energy consumption can be reduced, and operating efficiency can be improved. In addition, the aluminum-based composite material is added with hard reinforcing materials such as ceramic particles or fibers, which can effectively improve the wear resistance of the brake disc and extend its service life.
[0075] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A forced heat dissipation high-speed train brake disc with reduced pump wind energy consumption, characterized in that: It includes a connected disk body and a flange plate, the disk body has a disk body friction surface and a disk body back side, the disk body is provided with a disk body center hole, the flange plate is provided with a flange hole, the flange plate is provided on one side of the back side of the disk body, and a three-layer heat dissipation structure is provided on the back side of the disk body, the three-layer heat dissipation structure includes an outer heat dissipation rib, an inner heat dissipation rib and a pit structure, the shapes of the outer heat dissipation rib and the inner heat dissipation rib are elliptical, capsule-shaped and concave capsule-shaped; the arrangement modes of the outer heat dissipation rib and the inner heat dissipation rib are uniform arrangement and scattered arrangement; the surface of the flange plate opposite to the back side of the disk body is provided with the pit structure, the pit structure is circular and the arrangement mode is uniform arrangement.
2. The forced heat dissipation high-speed train brake disc with reduced pump wind energy consumption according to claim 1 is characterized in that: The outer heat dissipation ribs are tangential heat dissipation ribs, and the long axes of the tangential heat dissipation ribs are arranged perpendicular to the diameter direction of the disk body; the inner heat dissipation ribs are radial heat dissipation ribs, and the long axes of the radial heat dissipation ribs are arranged along the diameter direction of the disk body.
3. The forced heat dissipation high-speed train brake disc with reduced pump wind energy consumption according to claim 2 is characterized in that: The center distance between the outer heat dissipation ribs in two adjacent weeks, determined by the cross-section of the heat dissipation ribs, is △R1=22~28mm; the center distance between the heat dissipation ribs in the transition zone between the outer heat dissipation ribs and the inner heat dissipation ribs, determined by the cross-section of the heat dissipation ribs, is △R2=28~32mm; the center distance between the inner heat dissipation ribs in two adjacent weeks, is △R3=18~22mm; the outer heat dissipation ribs and the inner heat dissipation ribs in different weeks are arranged alternately; the angle α1 between the center of the cross-section of two adjacent heat dissipation ribs in the same week and the center of the disk body is 7°~9°.
4. The forced heat dissipation high-speed train brake disc with reduced pump wind energy consumption according to claim 2 is characterized in that: The center distance between the outer heat dissipation ribs in two adjacent weeks, determined by the cross section of the heat dissipation ribs, is △R4=32mm~38mm; the center distance determined by the cross section of the heat dissipation ribs in the transition zone between the outer heat dissipation ribs and the inner heat dissipation ribs is △R5=32mm~38mm; the angle α2 between the connecting line of the cross-sectional center of two adjacent outer heat dissipation ribs in the same circumference and the center of the disk body is 6°~12°; the outer heat dissipation ribs are arranged in a scattered manner, with one scattering area occupying 30°, and twelve scattering areas evenly distributed on the circumference; the inner heat dissipation ribs are evenly distributed on the circumference, and the inner and outer heat dissipation ribs are staggered between different circumferences.
5. The forced heat dissipation high-speed train brake disc with reduced pump wind energy consumption according to claim 1 is characterized in that: The pit structure has a pit diameter d1=10mm-12mm and a depth h=2mm-3mm.
6. The forced heat dissipation high-speed train brake disc with reduced pump wind energy consumption according to claim 5 is characterized in that: The pits are arranged in a radial direction along the back of the disk body to form a plurality of pit columns, and the pits in each pit column are spaced apart by 1 mm to 2 mm; the pit columns are evenly distributed in the gaps of the inner heat dissipation ribs.
7. The forced heat dissipation high-speed train brake disc with reduced pump wind energy consumption according to claim 1 is characterized in that: The outer heat dissipation ribs and the inner heat dissipation ribs are elliptical columnar heat dissipation ribs, the outer heat dissipation ribs are evenly arranged or scattered, the inner heat dissipation ribs are evenly arranged, and the ratio of the short axis a to the long axis b of the elliptical columnar heat dissipation ribs is a / b=0.5~1.
8. The forced heat dissipation high-speed train brake disc with reduced pump wind energy consumption according to claim 1 is characterized in that: The outer heat dissipation ribs and the inner heat dissipation ribs are capsule-shaped columnar heat dissipation ribs, the outer heat dissipation ribs are evenly arranged or scattered, and the inner heat dissipation ribs are evenly arranged; the ratio of the semicircular diameter at both ends of the capsule-shaped columnar heat dissipation ribs to the distance between their centers is d2=0.5~0.
7.
9. The forced heat dissipation high-speed train brake disc with reduced pump wind energy consumption according to claim 1 is characterized in that: The outer layer heat dissipation ribs are uniformly arranged or scatteredly arranged concave capsule-shaped columnar heat dissipation ribs, and the inner layer heat dissipation ribs are uniformly arranged capsule-shaped columnar heat dissipation ribs.
10. The forced heat dissipation high-speed train brake disc with reduced pump wind energy consumption according to claim 9, characterized in that: The long sides of the concave capsule-shaped columnar heat dissipation rib are provided with inwardly concave cavities, the ratio of the semicircular diameter at both ends of the concave capsule-shaped columnar heat dissipation rib to the distance between its center d2=0.5~0.7, the semicircular connection at both ends is an arc, and the radius of the arc R=25mm~35mm.