High-heat-dissipation cast steel brake disc of high-speed train

Abstract

The utility model discloses a high-heat-dissipation cast steel brake disc of a high-speed train, which relates to the technical field of brake discs and comprises a main disc and an auxiliary disc, the main disc and the auxiliary disc are fixed through a plurality of groups of threaded components, a plurality of air guide sheets are uniformly distributed on the inner side wall of the main disc in the circumferential direction of the main disc in an integrated manner, and the section of each air guide sheet is arc-shaped. According to the utility model, the arc-shaped design of the air guide sheets and the arrangement of the air guide groove arrays jointly promote the full contact between natural air and the air guide sheets, so that the heat dissipation area is increased, the natural air can take away heat more effectively, and the heat dissipation performance is obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of brake discs, in particular to a cast steel brake disc with high heat dissipation for high-speed trains. Background Technique

[0002] A brake disc is a component used to generate a braking force that hinders the movement or tendency of a high-speed train. A hydraulic brake disc is an important component in a brake. During braking, the friction pads press against both ends of the brake disc to generate friction, converting the kinetic energy of the high-speed train into heat and dissipating it.

[0003] The brake disc is made of cast iron material, and its heat capacity is limited. Moreover, in high-speed trains, the high-speed train contains more energy. If relying on the traditional solid brake disc for heat dissipation and cooling, the temperature of the brake disc will rise to six or seven hundred degrees Celsius. At this time, the performance of the friction pads and the brake disc will decline significantly. Therefore, a ventilated disc has emerged. During the running of the high-speed train, natural wind passes through the holes in the center of the ventilated disc, taking away part of the heat energy, which can greatly reduce the temperature rise of the brake disc; however, for the traditional ventilated brake disc, with the increase of the load of the high-speed train and the increase of the vehicle speed, the temperature rise of the ventilated disc is also getting larger and larger. Content of the Utility Model

[0004] The purpose of the utility model is to provide a cast steel brake disc with high heat dissipation for high-speed trains to solve the problems put forward in the above background technique.

[0005] To solve the above technical problems, the utility model provides the following technical solution: A cast steel brake disc with high heat dissipation for high-speed trains, including a main disc and a sub-disc. The main disc and the sub-disc are fixed by multiple groups of threaded components. A plurality of air guide vanes evenly distributed circumferentially around it are integrally arranged on the inner side wall of the main disc. The cross-section of the air guide vane is arc-shaped, and an air guide groove array is arranged on the side wall of the air guide vane.

[0006] Further, the air guide groove array is a plurality of transverse grooves arranged at equal intervals.

[0007] Further, the air guide groove array is a plurality of circular through holes evenly arranged.

[0008] Further, the air guide groove array is a plurality of honeycomb grooves evenly arranged.

[0009] Further, on the opposite side of two adjacent air guide vanes and the opposite side of the main disc and the sub-disc, an air guide channel is formed. On the inner wall of the air guide channel, two groups of heat dissipation hole arrays are symmetrically arranged. The heat dissipation hole array is composed of a plurality of heat dissipation holes arranged at equal intervals. The plurality of heat dissipation holes in the same group are arranged along the air guide direction of the air guide channel.

[0010] Further, a plurality of limiting grooves are evenly distributed on the inner side wall of the auxiliary disk along its circumferential direction. The number of the limiting grooves is the same as that of the air guiding vanes, and the limiting grooves are used for inserting the ends of the symmetrically arranged air guiding vanes.

[0011] Further, a plurality of convex blocks are evenly arranged on the inner walls of the main disk and the auxiliary disk at equal intervals. Through holes for the execution ends of the threaded components to pass through are arranged on the convex blocks. The inner diameter of the heat dissipation holes closest to the input end of the air guiding channel in each heat dissipation hole array is the same as the inner diameter of the through holes, and is also used for the execution ends of the threaded components to pass through.

[0012] The beneficial effects achieved by the present utility model are as follows:

[0013] 1. Through the arc design of the air guiding vanes and the arrangement of the air guiding groove array, the full contact between the natural wind and the air guiding vanes is jointly promoted, thereby increasing the heat dissipation area, enabling the natural wind to more effectively take away heat, and thus significantly improving the heat dissipation performance.

[0014] 2. By symmetrically arranging the heat dissipation hole arrays, the enhanced heat dissipation in a limited space is realized.

[0015] 3. The air guiding vanes are firmly connected to the auxiliary disk by being inserted into the limiting grooves. This connection method can effectively resist external vibration and impact, ensuring that the air guiding structure is not prone to loosening or damage during long-term use.

[0016] 4. By adding through holes and cooperating with the outermost heat dissipation holes, the threaded components can simultaneously fix the outside and inside of the main disk and the auxiliary disk, realizing a dual fixing method, significantly enhancing the connection strength between the main disk and the auxiliary disk, and improving the stability and reliability of the overall structure. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a high heat dissipation cast steel brake disk for a high-speed train in the embodiment;

[0018] Figure 2 It is a cross-sectional view of the air guiding vane in the embodiment;

[0019] Figure 3 It is a planar display diagram of the air guiding groove array in the embodiment;

[0020] Figure 4 It is a display diagram of the inner side wall of the auxiliary disk in the embodiment. Detailed Embodiment

[0021] The present utility model will be further described below with reference to the drawings.

[0022] As Figures 1-3As shown in the figure, the utility model discloses a cast steel brake disc with high heat dissipation for high-speed trains, including: a main disc 1 and a sub-disc 2. The main disc 1 and the sub-disc 2 are fixed by multiple groups of threaded components 4. A plurality of air guide vanes 11 evenly distributed circumferentially around it are integrally arranged on the inner side wall of the main disc 1. The cross-section of the air guide vane 11 is arc-shaped, and an air guide groove array 12 is arranged on the side wall of the air guide vane 11.

[0023] Based on the above structure, as Figures 1-3 shown, when natural wind enters between two adjacent air guide vanes 11, the natural wind contacts the air guide vane 11 for heat exchange, and as the natural wind flows, the heat is carried away, thus achieving the purpose of heat dissipation. The arc-shaped setting of the air guide vane 11 is conducive to the flow of natural wind. As for the setting of the air guide groove array 12, while the brake disc achieves high heat dissipation performance, it also reaches the goal of light weight. At the same time, the air guide groove array 12 guides the natural wind to pass through the air guide vane 11, increasing the contact surface between the natural wind and the air guide vane 11, and further increasing the heat dissipation effect.

[0024] Furthermore, as Figure 3 shown in Figure 3-1, the air guide groove array 12 is a plurality of transverse grooves arranged at equal intervals. The setting of the transverse grooves maximizes the effect of light weight and also maximizes the contact surface between the natural wind and the air guide vane 11.

[0025] Furthermore, as Figure 3 shown in Figure 3-2, the air guide groove array 12 is a plurality of circular through grooves arranged evenly. The circular through grooves have excellent stability and load-bearing capacity on the premise of ensuring an increased contact surface, and can effectively disperse stress and reduce weight.

[0026] Furthermore, as Figure 3 shown in Figure 3-3, the air guide groove array 12 is a plurality of honeycomb grooves arranged evenly. The honeycomb grooves have excellent stability and load-bearing capacity on the premise of ensuring an increased contact surface, and can effectively disperse stress and reduce weight.

[0027] Furthermore, as Figures 1-2 shown in Figures 3 and 4, on the relative side of two adjacent air guide vanes 11 and the relative side of the main disc 1 and the sub-disc 2, an air guide channel is formed. Two groups of heat dissipation hole arrays 13 are symmetrically arranged on the inner wall of the air guide channel. The heat dissipation hole array 13 is composed of a plurality of heat dissipation holes arranged at equal intervals. The multiple heat dissipation holes in the same group are arranged along the air guide direction of the air guide channel. By symmetrically arranging the heat dissipation hole array 13, the enhanced heat dissipation in a limited space is achieved.

[0028] Furthermore, as Figure 4As shown in the figure, a plurality of limiting grooves 21 evenly distributed circumferentially around it are provided on the inner side wall of the auxiliary disk 2. The number of the limiting grooves 21 is the same as that of the air guiding vanes 11, and the limiting grooves 21 are used for inserting the ends of the symmetrically arranged air guiding vanes 11. By inserting the air guiding vanes 11 into the limiting grooves 21, a firm connection is formed with the auxiliary disk 2. This connection method can effectively resist external vibration and impact, ensuring that the air guiding structure is not prone to loosening or damage during long-term use.

[0029] Furthermore, as Figure 1 shown in the figure, a plurality of bumps 3 are evenly spaced on the inner walls of the main disk 1 and the auxiliary disk 2. Through holes 31 for the execution ends of the threaded components 4 to pass through are provided on the bumps 3. The inner diameter of the heat dissipation hole closest to the input end of the air guiding channel in each group of heat dissipation hole arrays 13 is the same as the inner diameter of the through holes 31, and it is also used for the execution ends of the threaded components 4 to pass through. By adding the through holes 31 and cooperating with the outermost heat dissipation holes, the threaded components 4 can simultaneously fix the outside and inside of the main disk 1 and the auxiliary disk 2, realizing a double fixing method, significantly enhancing the connection strength between the main disk 1 and the auxiliary disk 2, and improving the stability and reliability of the overall structure.

[0030] The threaded component adopted in the present utility model has the same structure as the threaded component (fixed nut and fixed bolt) adopted in the patent with the publication number CN110159680B and the patent name of a combined cooling ventilation brake disk, which is already the prior art and will not be elaborated here.

[0031] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present utility model.

Claims

1. High heat dissipation cast steel brake disc for high-speed train, comprising a main disc (1) and a secondary disc (2), wherein the main disc (1) and the secondary disc (2) are fixed by multiple groups of threaded components (4), and it is characterized in that: A plurality of air guiding vanes (11) uniformly distributed circumferentially around it are integrally provided on the inner side wall of the main disk (1). The cross section of the air guiding vane (11) is arc-shaped, and an air guiding groove array (12) is provided on the side wall of the air guiding vane (11).

2. The high heat dissipation cast steel brake disc for high-speed trains according to claim 1, wherein: The air guiding groove array (12) is a plurality of transverse grooves arranged at equal intervals.

3. The high heat dissipation cast steel brake disc for high-speed trains according to claim 1, characterized in that: The air guiding groove array (12) is a plurality of circular through grooves uniformly arranged.

4. The high heat dissipation cast steel brake disc for high-speed trains according to claim 1, wherein: The air guiding groove array (12) is a plurality of honeycomb grooves uniformly arranged.

5. The high heat dissipation cast steel brake disc for high-speed train according to any one of claims 1-4, characterized in that: On the opposite side of the adjacent two air guiding vanes (11) and on the opposite side of the main disk (1) and the auxiliary disk (2), an air guiding channel is formed. Two groups of heat dissipation hole arrays (13) are symmetrically arranged on the inner wall of the air guiding channel. The heat dissipation hole array (13) is composed of a plurality of heat dissipation holes arranged at equal intervals. The plurality of heat dissipation holes in the same group are arranged along the air guiding direction of the air guiding channel.

6. The high heat dissipation cast steel brake disc for high-speed train according to claim 5, characterized in that: A plurality of limiting grooves (21) uniformly distributed circumferentially around it are provided on the inner side wall of the auxiliary disk (2). The number of the limiting grooves (21) is the same as that of the air guiding vanes (11), and the limiting grooves (21) are used for inserting the ends of the symmetrically arranged air guiding vanes (11).

7. The high heat dissipation cast steel brake disc for high-speed train according to claim 6, characterized in that: A plurality of bumps (3) are equally spaced on the inner walls of the main disk (1) and the auxiliary disk (2). A through hole (31) for the execution end of the threaded component (4) to pass through is provided on the bump (3). The inner diameter of the heat dissipation hole closest to the input end of the air guiding channel in each group of the heat dissipation hole arrays (13) is the same as the inner diameter of the through hole (31), and it is also used for the execution end of the threaded component (4) to pass through.

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