Brake device, installation method of temperature measurement sensor and railway vehicle

Abstract

The invention provides a brake device, an installation method of a temperature measurement sensor and a railway vehicle. The brake device comprises a friction plate provided with a temperature measuring hole, and the temperature measuring hole and a friction part of the friction plate are arranged at an interval; the temperature measuring sensor is arranged in the temperature measuring hole and extends out of the temperature measuring hole; the pressing block is arranged in the temperature measuring hole and located on the side, away from the friction part, of the temperature measuring sensor so that the temperature measuring end of the temperature measuring sensor can be extruded to make contact with the inner wall, close to the friction part, of the temperature measuring hole.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle brake temperature testing, and more specifically, to a brake device, an installation method of a temperature sensor, and a rail vehicle. Background Art

[0002] A brake is a device used to slow down or stop mechanical motion. The brake can use friction plates to convert the kinetic energy of a moving object into heat energy through friction, thereby achieving deceleration or stopping. Braking devices can be widely used in various means of transportation (such as cars, bicycles, trains, etc.), mechanical equipment (such as elevators, cranes, etc.) and various transmission systems in industrial production processes. Temperature changes will affect the mechanical and chemical properties of the brake, for example, it may cause surface powdering, flaking and fluctuations in the friction coefficient, making it impossible to effectively brake the moving object. Therefore, it is crucial to monitor the temperature changes in the friction area in real time.

[0003] However, since the friction part is in a friction contact state, it is impossible to use a temperature sensor to directly contact and measure the friction part. Usually, a temperature measuring hole is opened at a position of the friction plate that is separated from the friction part, and a temperature measuring sensor is installed in the temperature measuring hole to indirectly measure the temperature of the friction part. However, the existing installation method of the temperature measuring sensor has the disadvantage of low measurement accuracy. Summary of the invention

[0004] In view of this, the present disclosure provides a braking device, an installation method of a temperature sensor, and a rail vehicle.

[0005] One aspect of the present disclosure provides a braking device, comprising: a friction plate, formed with a temperature measuring hole, the temperature measuring hole being spaced apart from a friction portion of the friction plate; a temperature measuring sensor, disposed in the temperature measuring hole and extending out of the temperature measuring hole; and a pressing block, disposed in the temperature measuring hole and located on a side of the temperature measuring sensor away from the friction portion, so as to squeeze the temperature measuring end of the temperature measuring sensor into contact with an inner wall of the temperature measuring hole close to the friction portion.

[0006] Optionally, the height of the temperature measuring end of the temperature measuring sensor is greater than the height of the main body of the temperature measuring sensor, and a portion of the pressing block close to the temperature measuring end is formed with an inclined surface inclined downward.

[0007] Optionally, the pressing block is further formed with an upper surface matching the shape of the temperature measuring hole, and a pressing surface matching the shape of the main body, and the pressing surface is connected to the inclined surface.

[0008] Optionally, the braking device further comprises: a sealing layer, covering the opening of the temperature measuring hole and wrapping the pressing block and the temperature measuring sensor at the opening.

[0009] Optionally, the sealing layer is flexible.

[0010] Optionally, the sealing layer completely wraps the portion of the pressing block extending out of the temperature measuring hole.

[0011] Optionally, the pressing block is made of a heat conductive material.

[0012] Another aspect of the present disclosure provides a method for installing a temperature sensor suitable for the braking device described above, comprising: inserting the temperature sensor into the temperature measuring hole; and inserting a pressure block into the temperature measuring hole, and pulling the temperature sensor so that the inclined surface of the pressure block squeezes the temperature measuring end of the temperature sensor, so that the temperature measuring end contacts the inner wall of the temperature measuring hole close to the friction part.

[0013] Optionally, the installation method further comprises: machining a downwardly inclined inclined surface and a pressing surface matching the shape of the main body on the pressing block.

[0014] Another aspect of the present disclosure provides a rail vehicle, comprising: a vehicle body; wheels; and a braking device as described above, mounted on the vehicle body, and utilizing friction plates of the braking device to apply braking force to the treads of the wheels to brake the rail vehicle.

[0015] According to the embodiment of the present disclosure, by providing a pressing block, the temperature measuring end of the temperature sensor can be squeezed to contact the inner wall of the temperature measuring hole close to the friction part, so that the heat generated at the friction part can be directly transferred to the temperature measuring sensor through the friction plate instead of being transferred to the temperature measuring sensor through the air. The detection accuracy of the temperature measuring sensor can be improved, thereby achieving the purpose of accurately monitoring the temperature of the friction plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other objects, features and advantages of the present disclosure will become more apparent through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0017] Figure 1 A partial cross-sectional view of a braking device in the prior art is schematically shown.

[0018] Figure 2 A partial cross-sectional view of a braking device according to an embodiment of the present disclosure is schematically shown.

[0019] Figure 3 A side view of a friction plate according to an embodiment of the present disclosure is schematically shown.

[0020] Figure 4 A cross-sectional view of a friction plate according to an embodiment of the present disclosure is schematically shown.

[0021] Figure 5The figure schematically shows the position relationship between the temperature measuring sensor and the pressing block according to the embodiment of the present disclosure.

[0022] Figure 6 Schematically shows the Figure 5 A partial enlarged view of the illustrated embodiment.

[0023] Figure 7 Schematically shows the Figure 5 A partial enlarged view of the illustrated embodiment.

[0024] Reference numerals

[0025] 1. Friction plate; 11. Temperature measuring hole; 12. Friction part; 2. Temperature sensor; 21. Temperature measuring end; 22. Main body; 3. Pressing block; 31. Inclined surface; 32. Upper surface; 33. Pressing surface; 4. Sealing layer. DETAILED DESCRIPTION

[0026] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0027] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "comprise", "include", etc. used herein indicate the existence of features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0028] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0029] When using expressions such as "at least one of A, B, and C, etc.", they should generally be interpreted according to the meaning of the expression commonly understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0030] Figure 1 A partial cross-sectional view of a braking device in the prior art is schematically shown.

[0031] like Figure 1 As shown, in the process of realizing the concept of the present disclosure, the inventor found that in the brake device of the prior art, in order to facilitate the installation of the temperature sensor 2 in the temperature measuring hole 11, the temperature sensor 2 and the temperature measuring hole 11 are clearance-matched. At this time, the temperature measuring end 21 of the temperature measuring sensor 2 will be suspended in the temperature measuring hole 11, and due to the low thermal conductivity and poor thermal conductivity of air, the temperature measuring end 21 cannot accurately capture the temperature of the friction part 12.

[0032] Figure 2 A partial cross-sectional view of a braking device according to an embodiment of the present disclosure is schematically shown. Figure 3 A side view of a friction plate according to an embodiment of the present disclosure is schematically shown. Figure 4 A cross-sectional view of a friction plate according to an embodiment of the present disclosure is schematically shown. Figure 5 The figure schematically shows the position relationship between the temperature measuring sensor and the pressing block according to the embodiment of the present disclosure.

[0033] like Figure 2-Figure 5 As shown, the present disclosure provides a braking device. The braking device can be used to brake a vehicle. The braking device may include a friction plate 1, a temperature sensor 2 and a pressure block 3. The friction plate 1 may be a brake shoe, a brake pad, a transmission belt, a wheel disc, a bearing, a gear, a brake disc and a brake drum. The friction portion 12 of the friction plate 1 may contact the tread of the wheel of the vehicle to apply a braking force to the tread, thereby braking the vehicle. A temperature measuring hole 11 may be formed on the friction plate 1. The temperature measuring hole 11 may be spaced apart from the friction portion 12 of the friction plate 1. Further, the temperature measuring hole 11 may be processed on the friction plate 1 using components such as a laser, a punch and a drill. The distance between the temperature measuring hole 11 and the friction portion 12 may be determined based on the material properties of the friction plate 1 and the state of the friction portion 12. For example, the distance between the temperature measuring hole 11 and the friction portion 12 may be determined based on the distribution and depth of cracks in the friction portion 12. In order to more accurately measure the temperature of the friction part 12, the temperature measuring hole 11 can be set as close to the friction part 12 as possible, under the premise of ensuring that the friction plate 1 and the temperature measuring hole 11 are not worn. For example, the distance between the temperature measuring hole 11 and the friction part 12 can be within 1mm-4mm. Furthermore, the depth of the temperature measuring hole 11 can be determined according to the contact state of the friction plate 1 with other surfaces to ensure that the orthographic projection of the temperature measuring end 21 falls within the orthographic projection range of the friction part 12. The orthographic projection direction can be Figure 2The vertical direction shown. The diameter of the temperature measuring hole 11 can be set according to the cross-sectional size of the temperature measuring sensor 2. The temperature measuring sensor 2 can be any one of a thermocouple sensor, a resistance temperature detector, an armored temperature measuring sensor with a metal sheath, and a thermocouple temperature measuring wire without protective measures. The temperature measuring sensor 2 can be arranged in the temperature measuring hole 11 and extend out of the temperature measuring hole 11 to be connected to an external temperature acquisition device.

[0034] Further, the pressing block 3 can be arranged in the temperature measuring hole 11 and located on the side of the temperature measuring sensor 2 away from the friction part 12, so as to squeeze the temperature measuring end 21 of the temperature measuring sensor 2 to contact with the inner wall of the temperature measuring hole 11 close to the friction part 12. The temperature measuring hole 11, the temperature measuring sensor 2 and the pressing block 3 can be an interference fit, so as to squeeze the temperature measuring end 21 of the temperature measuring sensor 2 to contact with the inner wall of the temperature measuring hole 11 close to the friction part 12.

[0035] According to the embodiment of the present disclosure, by providing a pressing block 3 and providing the pressing block 3 on the side of the temperature sensor 2 away from the friction portion 12, the temperature measuring end 21 of the temperature sensor 2 can be squeezed to contact the inner wall of the temperature measuring hole 11 close to the friction portion 12, so that the heat generated by the friction portion 12 can be directly transferred to the temperature sensor 2 through the friction plate 1, rather than being transferred to the temperature sensor 2 through the air, which can improve the detection accuracy of the temperature sensor 2, thereby achieving the purpose of accurately monitoring the temperature of the friction plate 1.

[0036] In some embodiments, the height of the temperature measuring end 21 of the temperature measuring sensor 2 is greater than the height of the main body 22 of the temperature measuring sensor 2. For example, the temperature measuring sensor 2 can be a thermocouple temperature measuring wire, which has the advantages of small thermal resistance, fast response, large temperature measuring range, and high cost performance. Further, the temperature measuring end 21 of the thermocouple temperature measuring wire is the end welding point of two thermocouple wires.

[0037] Furthermore, the portion of the pressing block 3 near the temperature measuring end 21 is formed with a downwardly inclined inclined surface 31. The inclined surface 31 can squeeze the temperature measuring end 21 of the temperature measuring sensor 2 to contact the inner wall of the temperature measuring hole 11 near the friction portion 12. Furthermore, since the inclined surface 31 is inclined downward, that is, the inclined surface 31 is formed at the top of the temperature measuring hole 11 (such as Figure 5 Therefore, in the accommodating space formed by the pressing block 3 and the temperature measuring hole 11, the space below the inclined surface 31 becomes narrower and narrower, thereby preventing the temperature measuring sensor 2 from moving toward the opening direction of the temperature measuring hole 11, thereby further improving the detection accuracy of the temperature measuring sensor 2.

[0038] Figure 6 Schematically shows the Figure 5 A partial enlarged view of the illustrated embodiment. Figure 7Schematically shows the Figure 5 A partial enlarged view of the illustrated embodiment.

[0039] like Figure 5-Figure 7 As shown, in some embodiments, the pressing block 3 is further formed with an upper surface 32 (such as Figure 5 The upper surface 32 of the temperature measuring hole 11 shown in the figure), and a pressing surface 33 matching the shape of the main body 22. The pressing surface 33 is connected to the inclined surface 31. The pressing surface 33 can be used to apply pressure to the main body 22 of the temperature measuring sensor 2, thereby fixing the temperature measuring sensor 2 and preventing the temperature measuring sensor 2 from moving, so as to further improve the detection accuracy of the temperature measuring sensor 2.

[0040] In some embodiments, the braking device may further include a sealing layer 4. The sealing layer 4 may cover the opening of the temperature measuring hole 11 and wrap the pressing block 3 and the temperature measuring sensor 2 at the opening to seal the temperature measuring hole 11. For example, the sealing layer 4 may be made of a material having waterproof, oil-proof and anti-fouling effects to prevent external water, oil and other contaminants from easily entering the gap between the temperature measuring sensor 2 and the pressing block 3, thereby ensuring the stability and reliability of the temperature measuring sensor 2.

[0041] In some embodiments, the sealing layer 4 may be flexible, so that the temperature sensor 2 is in a tough environment, which can effectively reduce the impact of external vibration, impact and drag on the temperature sensor 2 and avoid damaging the installation stability of the temperature sensor 2. The sealing layer 4 can be made of various high temperature resistant silicone rubber materials.

[0042] In some embodiments, the sealing layer 4 can completely wrap the portion of the pressing block 3 extending out of the temperature measuring hole 11 , thereby preventing the external environment from directly acting on the pressing block 3 and improving the installation stability of the pressing block 3 .

[0043] In some embodiments, the pressing block 3 can be made of a heat-conducting material (such as at least one of silver, copper and aluminum), so that the heat generated by the friction part 12 can be transferred in sequence among the friction part 12, the temperature measuring end 21, the pressing block 3, and the friction plate 1, thereby forming a heat transfer channel with good thermal conductivity, avoiding the side of the temperature measuring end 21 away from the friction part 12 from transferring heat through the air, thereby responding to the temperature change of the friction part 12 more quickly, and further improving the detection accuracy of the temperature sensor 2.

[0044] The present disclosure also provides a method for installing the temperature measuring sensor 2 applicable to the above-described braking device. The installation method may include the following operations.

[0045] Insert the temperature measuring sensor 2 into the temperature measuring hole 11 .

[0046] The pressing block 3 is inserted into the temperature measuring hole 11 , and the temperature measuring sensor 2 is pulled, so that the inclined surface 31 of the pressing block 3 presses the temperature measuring end 21 of the temperature measuring sensor 2 , so that the temperature measuring end 21 contacts the inner wall of the temperature measuring hole 11 close to the friction part 12 .

[0047] According to the embodiment of the present disclosure, by providing a pressing block 3, the temperature measuring end 21 of the temperature sensor 2 can be squeezed to contact the inner wall of the temperature measuring hole 11 close to the friction part 12, so that the heat generated by the friction part 12 can be directly transferred to the temperature sensor 2 through the friction plate 1, rather than being transferred to the temperature sensor 2 through the air. The detection accuracy of the temperature sensor 2 can be improved, thereby achieving the purpose of accurately monitoring the temperature of the friction plate 1.

[0048] In some embodiments, the installation method may further include: before inserting the pressing block 3 into the temperature measuring hole 11 , processing a downwardly inclined inclined surface 31 and a pressing surface 33 matching the shape of the main body 22 on the pressing block 3 .

[0049] According to the embodiment of the present disclosure, before the pressing block 3 is processed, on the premise that the pressing block 3 can be inserted into the temperature measuring hole 11, the diameter of the pressing block 3 should be slightly different from the diameter of the temperature measuring hole 11. For example, the diameter of the pressing block 3 is about 0.1mm-0.5mm smaller than the diameter of the temperature measuring hole 11. Furthermore, since the temperature measuring sensor 2 needs to be inserted into the temperature measuring hole 11, an inclined surface 31 and a pressing surface 33 that match the shape of the temperature measuring sensor 2 can be processed in the temperature measuring hole 11. On the premise that the pressing block 3 and the temperature measuring sensor 2 can be inserted into the temperature measuring hole 11 at the same time, as little material of the pressing block 3 as possible should be removed to ensure an interference fit between the pressing block 3 and the temperature measuring hole 11, an interference fit between the pressing block 3 and the temperature measuring sensor 2, and an interference fit between the temperature measuring sensor 2 and the temperature measuring hole 11.

[0050] According to the embodiment of the present disclosure, by machining the inclined surface 31 on the pressing block 3, the temperature sensor 2 can be prevented from moving toward the opening direction of the temperature measuring hole 11, thereby further improving the detection accuracy of the temperature sensor 2. By machining the pressing surface 33 on the pressing block 3, the temperature sensor 2 can be fixed to prevent the temperature sensor 2 from moving, thereby further improving the detection accuracy of the temperature sensor 2.

[0051] The present disclosure also provides a rail vehicle. The rail vehicle may be a high-speed train, or a normal train, etc. The rail vehicle may include a vehicle body, wheels, and the above-described braking device. The braking device may be mounted on the vehicle body. The friction plate 11 of the braking device may be used to apply a braking force to the tread of the wheel to brake the rail vehicle. Since the temperature of the friction plate 11 may be monitored more accurately, the stability of the braking device may be ensured, thereby improving the safety of the rail vehicle.

[0052] It will be appreciated by those skilled in the art that the features described in the various embodiments of the present disclosure may be combined and / or combined in a variety of ways, even if such combinations or combinations are not explicitly described in the present disclosure. In particular, without departing from the spirit and teachings of the present disclosure, the features described in the various embodiments of the present disclosure may be combined and / or combined in a variety of ways. All of these combinations and / or combinations fall within the scope of the present disclosure.

[0053] The embodiments of the present disclosure are described above. However, these embodiments are only for illustrative purposes and are not intended to limit the scope of the present disclosure. Although the embodiments are described above, this does not mean that the measures in the various embodiments cannot be used in combination to advantage. Without departing from the scope of the present disclosure, those skilled in the art may make a variety of substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. A braking device, characterized in that: include: The friction plate is formed with a temperature measuring hole, wherein the temperature measuring hole is spaced apart from the friction part of the friction plate; A temperature measuring sensor is disposed in the temperature measuring hole and extends out of the temperature measuring hole; as well as A pressing block is arranged in the temperature measuring hole and is located on a side of the temperature measuring sensor away from the friction part, so as to press the temperature measuring end of the temperature measuring sensor to contact with the inner wall of the temperature measuring hole close to the friction part.

2. The braking device according to claim 1, characterized in that: The height of the temperature measuring end of the temperature measuring sensor is greater than the height of the main body of the temperature measuring sensor, and a portion of the pressing block close to the temperature measuring end is formed with an inclined surface inclined downward.

3. The braking device according to claim 2, characterized in that: The pressing block is further formed with an upper surface matching the shape of the temperature measuring hole and a pressing surface matching the shape of the main body, and the pressing surface is connected to the inclined surface.

4. The braking device according to claim 1 or 2, characterized in that: Also includes: The sealing layer covers the opening of the temperature measuring hole and wraps the pressing block and the temperature measuring sensor at the opening.

5. The braking device according to claim 4, characterized in that: The sealing layer is flexible.

6. The braking device according to claim 4, characterized in that: The sealing layer completely wraps the portion of the pressing block extending out of the temperature measuring hole.

7. The braking device according to claim 1 or 2, characterized in that: The pressing block is made of heat-conducting material.

8. A method for installing a temperature sensor for a brake device according to claim 2, characterized in that: include: inserting the temperature measuring sensor into the temperature measuring hole; and Insert a pressing block into the temperature measuring hole, and pull the temperature measuring sensor so that the inclined surface of the pressing block presses the temperature measuring end of the temperature measuring sensor, so that the temperature measuring end contacts the inner wall of the temperature measuring hole close to the friction part.

9. The installation method according to claim 8, characterized in that: Also includes: A downwardly inclined surface and a pressing surface matching the shape of the main body are processed on the pressing block.

10. A rail vehicle, characterized in that: include: Vehicle body; wheel; as well as The braking device as described in any one of claims 1 to 7 is installed on the vehicle body, and the friction plate of the braking device is used to apply braking force to the tread of the wheel to brake the rail vehicle.

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