Brake disc, brake device and train

Abstract

The invention 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 in the circumferential direction to form a disc body, an avoiding hole is formed in the middle of the disc body, a first flow channel is formed in each base body, the first flow channels are communicated from inside to outside, and a second flow channel is formed in each base body; a plurality of concave parts are formed in the side walls of the two sides of the first flow channel, the concave parts are arranged in a staggered mode along the two sides of the first flow channel, openings of the concave parts are inclined outwards, flow guide blocks are arranged in the concave parts, and the side walls of the concave parts are matched with the flow guide blocks to form second flow channels; the two ends of the second flow channel communicate with the first flow channel. The second flow channel and the first flow channel are matched to form a Tesla one-way channel, it is ensured that air flows in the brake disc in a directional mode, and the heat rising and dissipating 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 brake device and a train. Background Art

[0002] During the braking process of a train, huge kinetic energy is quickly converted into heat energy, causing the temperature of the brake disc to rise rapidly. High temperature will make the friction performance of the brake disc unstable, which can easily lead to serious safety problems such as brake failure. Although the common ventilated brake disc has improved heat dissipation, its internal ventilation structure is relatively simple and the airflow distribution is not uniform, resulting in low heat dissipation efficiency of the brake disc, which is prone to local overheating and safety problems. 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 to improve heat dissipation efficiency and reduce safety risks.

[0004] According to the first aspect of the present invention, the brake disc of the embodiment comprises: a base body, which is provided with multiple blocks, and the multiple base bodies are connected in sequence along the circumferential direction to form a disc body, and an avoidance hole is provided in the middle of the disc body. A first flow channel is opened in the base body, and the first flow channel runs through 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.

[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, thereby 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, the plug-in groove matches the plug-in part, and the plug-in part is plug-fitted 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 the mounting hole.

[0008] The braking device according to the second embodiment of the present invention comprises 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 current collector, the current collector is arranged in the avoidance hole, the current 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 current collector.

[0011] According to some embodiments of the present invention, a thermally conductive insulating pad is disposed 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 thermomotor includes a high-temperature end and a low-temperature end, the high-temperature end is in contact with the thermal insulation pad, and the low-temperature end is in contact with air.

[0013] The train according to the third aspect of the present invention comprises the braking device described in 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 given in part in the following description and in part will be obvious from the following description, or will be learned through 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 easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 A schematic diagram of a brake disc according to an embodiment of the first aspect of the present invention; Figure 2 A cross-sectional view of a brake disc according to an embodiment of the first aspect of the present invention; 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; 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; Figure 5 This is a schematic diagram of a train according to an embodiment of the third aspect of the present invention.

[0017] Description of reference numerals: Base 110; mounting hole 111; receiving hole 112; plug-in portion 113; plug-in groove 114; avoidance hole 115; first flow channel 121; second flow channel 122; guide block 123; thermoelectric element 130; collector 140; clamp 200; DETAILED DESCRIPTION Embodiments of the present invention are described in detail below, examples of which 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0018] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and 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, and therefore should not be understood as a limitation on the present invention.

[0019] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0020] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. 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.

[0021] Reference Figures 1 to 3 The brake disc of the first aspect embodiment of the present invention comprises: a base body 110, which is provided with multiple blocks. The multiple base bodies 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 body 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 wall of the recess cooperates 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.

[0022] 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, multiple 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 replaced to complete the maintenance of the brake disc, reducing maintenance costs and improving efficiency.

[0023] 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 the mounting hole 111. At least two plug-in parts 113 are formed on both sides of the disk body along the circumferential protrusion, and two adjacent plug-in parts 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 part 113, and the plug-in part 113 and the plug-in groove 114 are plugged and matched. Through the plug-in part 113 and the plug-in groove 114, multiple bases 110 are assembled together, which is convenient and fast, and the installation efficiency is improved. The base 110 can slide relatively along the plug-in groove 114, disperse the stress generated by the braking force, and reduce the risk of cracking. The disc body is connected to the wheel by 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.

[0024] Reference Figure 4 and Figure 5 The braking device of the second embodiment of the present invention comprises a caliper 200, a thermoelectric conversion module and a brake disc of the first embodiment of the present invention, wherein the caliper 200 is used to clamp the brake disc, and the thermoelectric conversion module is electrically connected to the brake disc.

[0025] 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, multiple 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 replaced to complete the maintenance of the brake disc, reducing maintenance costs and improving efficiency.

[0026] It is understandable that, referring to Figure 2 and Figure 4 The thermoelectric conversion module includes a thermoelectric element 130 and a collector 140. The collector 140 is arranged in the avoidance hole 115. The collector 140 rotates synchronously with the disc body. The thermoelectric element 130 is arranged in the first flow channel 121. The thermoelectric element 130 and the collector 140 are electrically connected. 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. Multiple thermoelectric elements 130 are connected in parallel with the collector 140. The current generated by the thermoelectric element 130 is gathered on the collector 140. The electric energy is transmitted to the power supply system of the train through the collector 140, so as to realize waste heat recovery and save energy.

[0027] It is understandable that a heat-conducting insulating pad (not shown in the drawings) is provided between the thermoelectric element 130 and the inner wall of the first flow channel 121, and the heat-conducting insulating pad is respectively in contact with the inner wall of the first flow channel 121 and the thermoelectric element 130. The heat-conducting insulating pad is provided between the thermoelectric element 130 and the inside of the first flow channel 121 to reduce vibration and impact to the thermoelectric element 130 during braking, protect the thermoelectric element 130, and delay the service life of the thermoelectric element 130.

[0028] It can be understood that the thermomotor includes a high-temperature end and a low-temperature end, the high-temperature end is in contact with the thermal insulation pad, and the low-temperature end is in contact with the air. The temperature of the brake disc is transferred to the high-temperature end, and the high-temperature end is heated to generate a voltage difference with the low-temperature end, thereby forming an electric current to achieve waste heat recovery.

[0029] Reference Figure 5 The 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, which ensures that the air flows in a directional channel in the brake disc, prevents other reverse flows, and improves 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 severely worn or thermally fatigued, there is no need to replace the entire brake disc as a whole. The damaged substrate 110 can be quickly replaced to complete the maintenance of the brake disc, thereby reducing maintenance costs and improving efficiency.

[0030] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A brake disc, characterized in that: include: A 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, which is arranged along the circumferential direction, matches the plug-in groove, and the plug-in part is plug-fitted 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, a receiving hole is arranged at one end of the mounting hole, the receiving hole is arranged coaxially with the mounting hole, and the diameter of the receiving hole is larger than that of the mounting hole.

4. A 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, the current 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 current collector.

6. The braking device according to claim 4, characterized in that: A heat-conducting insulating pad is arranged between the thermoelectric element and the inner wall of the first flow channel, and the heat-conducting 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 thermomotor comprises 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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