Brake disc, brake device and train

Abstract

The application discloses a brake disc, a brake device and a train. The brake disc comprises a plurality of base bodies, the base bodies are sequentially connected along the circumference to form a disc body, an avoiding hole is arranged in the middle of the disc body, a first flow channel is arranged in the base body, the first flow channel penetrates from the inside to the outside, a plurality of recesses are arranged on the side walls on both sides of the first flow channel, the recesses are staggered along the side walls on both sides of the first flow channel, the openings of the recesses are inclined outward, a flow guide block is arranged in the recess, the side wall of the recess and the flow guide block cooperatively form a second flow channel, and the two ends of the second flow channel are communicated with the first flow channel. The second flow channel and the first flow channel cooperatively form a Tesla one-way channel, so that the air is ensured to flow in a directional channel in the brake disc, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of train braking, and in particular to a brake disc, a braking device and a train. Background Art

[0002] During train braking, enormous kinetic energy is rapidly converted into heat, causing the brake disc temperature to rise rapidly. High temperatures can destabilize the disc's frictional properties, potentially leading to serious safety issues such as brake failure. While common ventilated brake discs offer some improvements in heat dissipation, their relatively simple internal ventilation structure and uneven airflow distribution result in inefficient heat dissipation, making them prone to localized overheating and potentially causing safety issues. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a brake disc, a brake device and a train, which improve heat dissipation efficiency and reduce safety risks.

[0004] According to the first aspect of the present invention, the brake disc of the embodiment includes: a base, which is provided with multiple blocks, and the multiple bases are connected in sequence along the circumferential direction to form a disc body, an avoidance hole is provided in the middle of the disc body, a first flow channel is opened in the base, the first flow channel runs from the inside to the outside, and the side walls on both sides of the first flow channel are provided with multiple recesses, and the multiple recesses are staggered along both sides of the first flow channel, and the openings of the recesses are inclined outward, and a guide block is provided in the recess, and the side walls of the recess cooperate with the guide block to form a second flow channel, and both ends of the second flow channel are connected to the first flow channel.

[0005] The brake disc according to the embodiment of the first aspect of the present invention has at least the following beneficial effects: the second flow channel cooperates with the first flow channel to form a Tesla one-way channel, ensuring that the air flows in a directional manner in the brake disc and improving the heat dissipation efficiency.

[0006] According to some embodiments of the present invention, at least two plug-in parts are formed on both sides of the disk body protruding along the circumferential direction, and two adjacent plug-in parts cooperate to form a plug-in groove. The plug-in groove is arranged along the circumferential direction, and the plug-in groove matches the plug-in part, and the plug-in part is plugged into and cooperated with the plug-in groove.

[0007] According to some embodiments of the present invention, the base is provided with a mounting hole for accommodating a bolt, a receiving hole is provided at one end of the mounting hole, the receiving hole is coaxially arranged with the mounting hole, and the diameter of the receiving hole is larger than that of the mounting hole.

[0008] The braking device according to the second embodiment of the present invention includes a caliper, a thermoelectric conversion module and the brake disc according to the first embodiment of the present invention, wherein the caliper is used to clamp the brake disc, and the thermoelectric conversion module is electrically connected to the brake disc.

[0009] The braking device according to the embodiment of the second aspect of the present invention has at least the following beneficial effects: the second flow channel cooperates with the first flow channel to form a Tesla one-way channel, ensuring that the air flows in a directional manner in the brake disc, thereby improving the heat dissipation efficiency.

[0010] According to some embodiments of the present invention, the thermoelectric conversion module includes a thermoelectric component and a collector, the collector is arranged in the avoidance hole, the collector rotates synchronously with the disk, the thermoelectric component is arranged in the first flow channel, and the thermoelectric component is electrically connected to the collector.

[0011] According to some embodiments of the present invention, a thermally conductive insulating pad is provided between the thermoelectric element and the inner wall of the first flow channel, and the thermally conductive insulating pad is in contact with the inner wall of the first flow channel and the thermoelectric element respectively.

[0012] According to some embodiments of the present invention, the thermoelectric element includes a high-temperature end and a low-temperature end, the high-temperature end is in contact with the thermally conductive insulating pad, and the low-temperature end is in contact with air.

[0013] A train according to an embodiment of the third aspect of the present invention includes the braking device described in the embodiment of the second aspect of the present invention.

[0014] The train according to the embodiment of the third aspect of the present invention has at least the following beneficial effects: the second flow channel cooperates with the first flow channel to form a Tesla one-way channel, ensuring that the air flows in a directional manner in the brake disc, thereby improving the heat dissipation efficiency.

[0015] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0017] Figure 1 A schematic diagram of a brake disc according to an embodiment of the first aspect of the present invention;

[0018] Figure 2 A cross-sectional view of a brake disc according to an embodiment of the first aspect of the present invention;

[0019] Figure 3 A schematic diagram of a base body in a brake disc according to an embodiment of the first aspect of the present invention;

[0020] Figure 4 A schematic diagram of a brake disc and a current collector in a brake device according to an embodiment of the second aspect of the present invention;

[0021] Figure 5 This is a schematic diagram of a train according to an embodiment of the third aspect of the present invention.

[0022] Description of reference numerals:

[0023] Base 110; mounting hole 111; receiving hole 112; plug portion 113; plug slot 114; avoidance hole 115; first flow channel 121; second flow channel 122; guide block 123; thermoelectric element 130; current collector 140; clamp 200; DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0026] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Reference Figures 1 to 3The brake disc of the embodiment of the first aspect of the present invention includes: a base 110, which is provided with multiple blocks. The multiple bases 110 are connected in sequence along the circumferential direction to form a disc body, and an avoidance hole 115 is provided in the middle of the disc body. A first flow channel 121 is opened in the base 110, and the first flow channel 121 runs through from the inside to the outside. The side walls on both sides of the first flow channel 121 are provided with multiple recesses, and the multiple recesses are staggered along both sides of the first flow channel 121. The openings of the recesses are inclined outward, and a guide block 123 is provided in the recess. The side walls of the recess cooperate with the guide block 123 to form a second flow channel 122, and both ends of the second flow channel 122 are connected to the first flow channel 121.

[0029] The second flow channel 122 cooperates with the first flow channel 121 to form a Tesla one-way channel, ensuring that air flows in a directional manner within the brake disc, preventing other reverse flows and improving heat dissipation efficiency. In addition, multiple substrates 110 are spliced ​​together to form the disc body. The substrates 110 are connected to each other, which can not only disperse the stress generated by the braking force, but also avoid cracking due to local overheating. During high-speed rotation, the substrates 110 can move relative to each other, absorbing or alleviating thermal stress and vibration. In addition, when the friction surface of the substrate 110 is worn or severely thermally fatigued, there is no need to replace the entire brake disc. The damaged substrate 110 can be quickly removed and replaced to complete the repair and maintenance of the brake disc, reducing maintenance costs and improving efficiency.

[0030] It is understandable that, referring to Figure 1 The base 110 is provided with a mounting hole 111 for accommodating a bolt, and a receiving hole 112 is provided at one end of the mounting hole 111. The receiving hole 112 is coaxially arranged with the mounting hole 111, and the diameter of the receiving hole 112 is larger than that of the mounting hole 111. At least two plug-in portions 113 are formed on both sides of the disk body along the circumferential protrusion, and two adjacent plug-in portions 113 cooperate to form a plug-in groove 114. The plug-in groove 114 is arranged along the circumferential direction, and the plug-in groove 114 matches the plug-in portion 113, and the plug-in portion 113 and the plug-in groove 114 are plugged in and matched. By plugging and matching the plug-in portion 113 with the plug-in groove 114, multiple bases 110 are assembled together, which is convenient and quick, and improves installation efficiency. The base 110 can slide relatively along the plug-in groove 114, dispersing the stress generated by the braking force and reducing the risk of cracking. The disc body is connected to the wheel by means of bolts passing through the mounting holes 111 and being threadedly connected to the wheel, and the bolts are embedded in the base 110 through the receiving holes 112 to avoid interference during braking.

[0031] Reference Figure 4 and Figure 5 The braking device of the second embodiment of the present invention includes a clamp 200, a thermoelectric conversion module and a brake disc of the first embodiment of the present invention, the clamp 200 is used to clamp the brake disc, and the thermoelectric conversion module is electrically connected to the brake disc.

[0032] The second flow channel 122 cooperates with the first flow channel 121 to form a Tesla one-way channel, ensuring that air flows in a directional manner within the brake disc, preventing other reverse flows and improving heat dissipation efficiency. In addition, multiple substrates 110 are spliced ​​together to form the disc body. The substrates 110 are connected to each other, which can not only disperse the stress generated by the braking force, but also avoid cracking due to local overheating. During high-speed rotation, the substrates 110 can move relative to each other, absorbing or alleviating thermal stress and vibration. In addition, when the friction surface of the substrate 110 is worn or severely thermally fatigued, there is no need to replace the entire brake disc. The damaged substrate 110 can be quickly removed and replaced to complete the repair and maintenance of the brake disc, reducing maintenance costs and improving efficiency.

[0033] It is understandable that, referring to Figure 2 and Figure 4 The thermoelectric conversion module includes a thermoelectric element 130 and a current collector 140. The current collector 140 is disposed in the avoidance hole 115 and rotates synchronously with the disc body. The thermoelectric element 130 is disposed in the first flow channel 121 and is electrically connected to the current collector 140. During braking, the heat generated by the friction of the brake disc is transferred to the thermoelectric element 130. The thermoelectric element 130 is made of high-temperature resistant thermoelectric material. The thermoelectric element 130 generates current when heated. There are multiple thermoelectric elements 130, and multiple thermoelectric elements 130 are connected in parallel with the current collector 140. The current generated by the thermoelectric elements 130 is converged on the current collector 140, and the electrical energy is transmitted to the power supply system of the train through the current collector 140, realizing waste heat recovery and saving energy.

[0034] It is understood that a thermally conductive insulating pad (not shown in the drawings) is disposed between the thermoelectric element 130 and the inner wall of the first flow channel 121. The thermally conductive insulating pad contacts the inner wall of the first flow channel 121 and the thermoelectric element 130, respectively. The thermally conductive insulating pad is disposed between the thermoelectric element 130 and the interior of the first flow channel 121 to reduce vibration and impact to the thermoelectric element 130 during braking, protecting the thermoelectric element 130 and extending its service life.

[0035] As can be understood, thermoelectric element 130 includes a high-temperature end and a low-temperature end. The high-temperature end contacts the thermally conductive insulating pad, while the low-temperature end contacts the air. The brake disc's heat is transferred to the high-temperature end, where it generates a voltage difference with the low-temperature end, generating an electric current and recovering waste heat.

[0036] Reference Figure 5The train of the third embodiment of the present invention includes the braking device of the second embodiment of the present invention. The second flow channel 122 cooperates with the first flow channel 121 to form a Tesla one-way channel, ensuring that the air flows in a directional channel in the brake disc, preventing other reverse flows, and improving the heat dissipation efficiency. In addition, a plurality of substrates 110 are spliced ​​to form a disc body, and the substrates 110 are connected to each other, which can not only disperse the stress generated by the braking force, but also avoid cracking caused by local overheating. When rotating at high speed, relative movement can occur between the substrates 110 to absorb or alleviate thermal stress and vibration. In addition, when the friction surface of the substrate 110 is worn or thermal fatigue is severe, there is no need to replace the entire brake disc as a whole. The damaged substrate 110 can be quickly removed to complete the repair and maintenance of the brake disc, thereby reducing maintenance costs and improving efficiency.

[0037] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the scope of the present invention.

Claims

1. A brake disc, characterized in that include: The base body is provided with multiple blocks, and the multiple base bodies are connected in sequence along the circumferential direction to form a disk body, and an avoidance hole is provided in the middle of the disk body. A first flow channel is opened in the base body, and the first flow channel runs from the inside to the outside. The side walls on both sides of the first flow channel are provided with multiple recesses, and the multiple recesses are staggered along both sides of the first flow channel. The openings of the recesses are inclined outward, and a guide block is provided in the recess. The side walls of the recess cooperate with the guide block to form a second flow channel, and both ends of the second flow channel are connected to the first flow channel.

2. The brake disc according to claim 1, characterized in that At least two plug-in parts are formed on both sides of the disk body protruding along the circumferential direction, and two adjacent plug-in parts cooperate to form a plug-in groove. The plug-in groove is arranged along the circumferential direction, and the plug-in groove matches the plug-in part, and the plug-in part is plugged and matched with the plug-in groove.

3. The brake disc according to claim 1, characterized in that The base is provided with a mounting hole for accommodating a bolt, and a receiving hole is provided at one end of the mounting hole. The receiving hole is coaxially arranged with the mounting hole, and the diameter of the receiving hole is larger than that of the mounting hole.

4. Braking device, characterized in that: The invention comprises a caliper, a thermoelectric conversion module and the brake disc according to any one of claims 1 to 3, wherein the caliper is used to clamp the brake disc, and the thermoelectric conversion module is electrically connected to the brake disc.

5. The braking device according to claim 4, characterized in that The thermoelectric conversion module includes a thermoelectric component and a current collector. The current collector is arranged in the avoidance hole and rotates synchronously with the disk. The thermoelectric component is arranged in the first flow channel and is electrically connected to the current collector.

6. The braking device according to claim 5, characterized in that A thermally conductive insulating pad is provided between the thermoelectric element and the inner wall of the first flow channel, and the thermally conductive insulating pad is in contact with the inner wall of the first flow channel and the thermoelectric element respectively.

7. The braking device according to claim 6, characterized in that The thermoelectric element includes a high-temperature end and a low-temperature end, wherein the high-temperature end contacts the thermal insulation pad, and the low-temperature end contacts the air.

8. A train, characterized in that The brake device comprises the brake device according to any one of claims 4 to 7.

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