Brake disc and rail vehicle

Abstract

The application discloses a brake disc, which comprises a first disc body, a second disc body, a disc hub and first heat dissipation ribs, the connecting flange of the disc hub is used for being connected with an axle, the first heat dissipation ribs are multiple, and the first heat dissipation ribs are arranged between the first disc body and the second disc body, so that the space between the first disc body and the second disc body is divided into multiple air inlet channels; an air guide mechanism is further arranged at the air inlet of the air inlet channel, the air guide mechanism can be switched between a first position and a second position of the air inlet to block or open the air inlet, wherein the first position is an open position of the air inlet, and the second position is a block position of the air inlet; when the temperature of the brake disc is within a first temperature threshold, the air guide mechanism is switched to the first position to open the air inlet; and when the temperature of the brake disc is outside the first temperature threshold, the air guide mechanism is switched to the second position to block the air inlet. The brake disc can solve the contradiction between the need of ventilating and heat dissipating of the brake disc and the need of reducing the traction power loss.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail vehicle braking technology, in particular to a brake disc and a rail vehicle. BACKGROUND

[0002] The brake disc is a key component of the train basic braking system. In the train braking process, the kinetic energy of the train is converted into internal energy through the friction between the brake disc and the brake pad, so as to achieve the purpose of braking. The internal energy generated by the train braking is mainly absorbed by the brake disc and finally dissipated into the air through the convection heat exchange between the brake disc and the air.

[0003] In order to enhance the convection effect between the brake disc and the air, the brake disc of the high-speed train is usually designed in a ventilated structure, that is, the heat dissipation ribs are arranged between the friction rings. During the train running process, the airflow can flow through the inside of the brake disc to enhance the convection heat dissipation. However, the ventilated structure of the brake disc also has a problem, that is, the ventilated brake disc has a pumping effect. The driving of the brake disc needs to be provided with power by the driving device of the vehicle, which is a part of the loss of traction power. The ventilated brake disc not only converts energy during braking, but also consumes part of the power due to the pumping characteristics of the brake disc when not braking, resulting in waste of energy.

[0004] Therefore, how to solve the contradiction between the need for ventilation and heat dissipation of the brake disc during braking of the rail vehicle and the need to reduce the traction power loss of the brake disc during normal operation is a technical problem that needs to be solved by those skilled in the art. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a brake disc that can solve the contradiction between the need for ventilation and heat dissipation of the brake disc during braking of the rail vehicle and the need to reduce the traction power loss of the brake disc during normal operation.

[0006] Another purpose of the present application is to provide a rail vehicle.

[0007] To achieve the above purpose, the present application provides the following technical solutions:

[0008] A brake disc, comprising a first disc body, a second disc body, a disc hub and a first heat dissipation rib, the connecting flange of the disc hub is used for connecting with an axle, the first heat dissipation rib is a plurality of, and the first heat dissipation rib is arranged between the first disc body and the second disc body, so as to divide the space between the first disc body and the second disc body into a plurality of air inlet channels;

[0009] An air guide mechanism is further arranged at the air inlet of the air inlet channel, and the air guide mechanism can be switched between a first position and a second position of the air inlet to block or open the air inlet, wherein the first position is an open position of the air inlet, and the second position is a blocking position of the air inlet.

[0010] When the temperature of the brake disc is within the first temperature threshold, the air guide mechanism switches to the first position to open the air inlet; when the temperature of the brake disc is outside the first temperature threshold, the air guide mechanism switches to the second position to block the air inlet.

[0011] Preferably, a plurality of second heat dissipation ribs are further included, and the second heat dissipation ribs are arranged between any two first heat dissipation ribs.

[0012] The length of the second heat dissipation rib is less than the length of the first heat dissipation rib, and the second heat dissipation rib is arranged at the lower part of the air guide mechanism.

[0013] Preferably, the air guide mechanism includes a driving member and an air guide piece, and the driving member can drive the air guide piece to move to the first position or the second position.

[0014] Preferably, the mounting seat of the driving member is arranged on the first disc body or the second disc body, the driving shaft of the driving member is connected with the air guide piece, and the driving member can control the air guide piece to rotate forward or reversely by a preset angle, so as to realize the switching of the air guide piece between the first position and the second position.

[0015] Preferably, the driving member is a servo motor.

[0016] Preferably, the air guide piece is in a rectangular structure or a blade structure.

[0017] Preferably, the air guide mechanism is one, and the air guide mechanism is arranged close to the first heat dissipation rib, and the length of the air guide piece is equal to the length between adjacent two first heat dissipation ribs.

[0018] Preferably, the air guide mechanism is two, and the two air guide mechanisms are arranged at the middle position of the air inlet, and the length of the air guide pieces of the two air guide mechanisms is equal to the length of adjacent two first heat dissipation ribs.

[0019] Preferably, a temperature sensor arranged on the brake disc is further included, and the temperature sensor is electrically connected with the driving member.

[0020] A rail vehicle includes the brake disc according to any one of the above.

[0021] As can be seen from the above technical solutions, during the operation of the rail vehicle, when the temperature of the brake disc is within the first temperature threshold, the air guide mechanism switches to the first position to open the air inlet of the air intake channel, allowing outside air to enter the air intake channel through the air inlet, so that the brake disc can be ventilated and cooled; when the temperature of the brake disc is outside the first temperature threshold, the air guide mechanism switches to the second position to block the air inlet of the air intake channel, thereby reducing the pumping resistance of the brake disc and reducing the wind resistance energy consumption of the rail vehicle during operation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the brake disc disclosed in the embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the main structure of the brake disc disclosed in an embodiment of the present invention;

[0025] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0026] Figure 4 This is a schematic diagram of the air guiding mechanism in the first position as disclosed in the embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the air guiding mechanism disclosed in the embodiment of the present invention in the second position.

[0028] The names of the components are as follows:

[0029] 100-First plate, 200-Second plate, 300-Connecting flange, 400-First heat dissipation fin, 500-Second heat dissipation fin, 600-Air guide mechanism, 601-Driver, 602-Air guide vane, 700-Air intake channel. Detailed Implementation

[0030] In view of this, the core of the present invention is to provide a brake disc that can resolve the contradiction between the need for ventilation and heat dissipation of the brake disc during braking of rail vehicles and the need to reduce traction power loss of the brake disc during normal operation.

[0031] Another object of the present invention is to provide a rail vehicle.

[0032] In order to make the person skilled in the art better understand the present application, the following further detailed description of the present application is combined with the drawings and specific embodiments, please refer to Figures 1 to 5 .

[0033] The brake disc disclosed by the embodiment of the present application comprises a first disc body 100, a second disc body 200, a disc hub (not shown in the figure) and a first heat dissipation rib 400, the connecting flange 300 of the disc hub is used for being connected with an axle, the first heat dissipation rib 400 is a plurality of, and the first heat dissipation rib 400 is arranged between the first disc body 100 and the second disc body 200, so as to divide the space between the first disc body 100 and the second disc body 200 into a plurality of air inlet channels 700.

[0034] The air inlet of the air inlet channel 700 is further provided with an air guide mechanism 600, the air guide mechanism 600 can be switched between a first position and a second position of the air inlet to block or open the air inlet, wherein the first position is an open position of the air inlet, and the second position is a blocking position of the air inlet, when the temperature of the brake disc is within a first temperature threshold, the air guide mechanism 600 is switched to the first position to open the air inlet; when the temperature of the brake disc is outside the first temperature threshold, the air guide mechanism 600 is switched to the second position to block the air inlet.

[0035] When the temperature of the brake disc is within the first temperature threshold during the running of the rail vehicle, the air guide mechanism 600 is switched to the first position to open the air inlet of the air inlet channel 700, so that the external air can enter the air inlet channel 700 through the air inlet, so that the brake disc can be ventilated and cooled; when the temperature of the brake disc is outside the first temperature threshold, the air guide mechanism 600 is switched to the second position to block the air inlet of the air inlet channel 700, so that the pumping resistance of the brake disc is reduced, thereby reducing the wind resistance energy consumption of the rail vehicle during running.

[0036] Compared with the prior art, the brake disc disclosed by the embodiment of the present application can solve the contradiction between the need of ventilation and cooling of the brake disc during braking of the rail vehicle and the need of reducing the traction power loss of the brake disc during normal running, so as to make the environment of the rail vehicle more friendly.

[0037] In order to improve the heat dissipation effect of the brake disc, the brake disc disclosed by the embodiment of the present application further comprises a plurality of second heat dissipation ribs 500, wherein the second heat dissipation rib 500 is arranged between any two first heat dissipation ribs 400.

[0038] In order to facilitate arrangement, the length of the second heat dissipation rib 500 disclosed by the embodiment of the present application is preferably less than the length of the first heat dissipation rib 400, and the second heat dissipation rib 500 is arranged at the lower part of the air guide mechanism 600.

[0039] It needs to be explained that the lower part of the air guide mechanism 600 refers to the position close to the connecting flange 300.

[0040] The specific structure of the air guide mechanism 600 is not limited in the embodiment of the present application, and any structure meeting the use requirements of the present application is within the protection scope of the present application.

[0041] As a preferred embodiment, the air guide mechanism 600 disclosed in the embodiment of the present application preferably comprises a driving member 601 and an air guide piece 602, wherein the driving member 601 can drive the air guide piece 602 to run to a first position or a second position.

[0042] The mounting seat of the driving member 601 is arranged on the first disc body 100 or the second disc body 200, the driving shaft of the driving member 601 is connected with the air guide piece 602, and the driving member 601 can control the air guide piece 602 to rotate forward or reversely by a preset angle, so as to realize the switching of the air guide piece 602 between the first position and the second position.

[0043] The specific structure of the driving member 601 is not limited in the embodiment of the present application, and the driving member 601 can be a servo motor, a rotary cylinder or other mechanism capable of driving the air guide piece 602 to rotate, as long as the structure meets the use requirements of the present application.

[0044] As a preferred embodiment, the driving member 601 disclosed in the embodiment of the present application is preferably a servo motor.

[0045] The specific shape structure of the air guide piece 602 is not limited in the embodiment of the present application, and the air guide piece 602 can be a rectangular structure, a blade structure or other structure, as long as the structure meets the use requirements of the present application.

[0046] As a preferred embodiment, the air guide piece 602 disclosed in the embodiment of the present application is preferably a blade structure.

[0047] When the driving member 600 is a servo motor, the base of the servo motor is arranged on the first disc body 100 or the second disc body 200, and the motor shaft of the servo motor is connected with the air guide piece 602, wherein the servo motor can control the air guide piece 602 to rotate forward or reversely by a preset angle, so as to realize the switching of the air guide piece 602 between the first position and the second position.

[0048] The air guide mechanism 600 can be arranged one or two, and the specific arrangement number of the air guide mechanism 600 is not limited in the embodiment of the present application, and can be selected according to actual needs by those skilled in the art.

[0049] As one of the preferred embodiments, the air guide mechanism 600 disclosed by the embodiment of the present application can be one, when the air guide mechanism 600 is one, the air guide mechanism 600 needs to be arranged close to the first heat dissipation rib 400, wherein the length of the air guide sheet 602 is equal to the length between the adjacent two first heat dissipation ribs 400. In this way, when the rail vehicle is in normal operation, the air guide sheet 602 can completely block the air inlet of the air inlet channel 700 to prevent external gas from entering the brake disc, thereby effectively reducing the traction power loss.

[0050] As another preferred embodiment, the air guide mechanism 600 disclosed by the embodiment of the present application can be two, when the air guide mechanism 600 is two, the two air guide mechanisms 600 are arranged at the middle position of the air inlet, wherein the length of the air guide sheet 602 of the two air guide mechanisms 600 is equal to the length of the adjacent two first heat dissipation ribs 400. In this way, when the rail vehicle is in normal operation, the air guide sheet 602 can completely block the air inlet of the air inlet channel 700 to prevent external gas from entering the brake disc, thereby effectively reducing the traction power loss.

[0051] In order to more accurately detect the temperature of the brake disc, the brake disc disclosed by the embodiment of the present application further comprises a temperature sensor arranged on the brake disc, wherein the temperature sensor is electrically connected with the driving piece 601.

[0052] When the temperature sensor detects that the temperature of the brake disc is within the first temperature threshold, the temperature sensor transmits a signal to the driving piece 601, and the driving piece 601 controls the air guide mechanism 600 to switch to the first position to open the air inlet; when the temperature sensor detects that the temperature of the brake disc is outside the first temperature threshold, the temperature sensor transmits a signal to the driving piece 601, and the driving piece 601 controls the air guide mechanism 600 to switch to the second position to block the air inlet.

[0053] Of course, the controller needs to be arranged on the driving piece 601, the temperature sensor transmits a signal to the controller, and the controller can control the driving piece 601 to be turned on, so as to control the driving shaft of the driving piece 601 to drive the air guide sheet 602 to rotate by a preset angle.

[0054] Of course, the controller can also not be arranged on the driving piece 601, but can be arranged at other positions, and those skilled in the art can arrange it according to the arrangement requirement of the brake disc.

[0055] The embodiment of the present application further discloses a rail vehicle comprising the brake disc disclosed in any one of the above embodiments.

[0056] Since the above rail vehicle adopts the brake disc disclosed by the embodiment of the present application, the above rail vehicle has the technical advantages of the brake disc disclosed by the above embodiment, and the embodiment of the present application will not be repeated here.

[0057] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used to indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0058] Unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0059] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A brake disc, characterized in that The brake disc comprises a first disc body, a second disc body, a disc hub and a first heat dissipation rib, the connecting flange of the disc hub is used for connecting with an axle, the first heat dissipation rib is multiple, and the first heat dissipation rib is arranged between the first disc body and the second disc body to divide the space between the first disc body and the second disc body into multiple air inlet channels; An air guide mechanism is further arranged at the air inlet of the air inlet channel, the air guide mechanism can be switched between a first position and a second position of the air inlet to block or open the air inlet, wherein the first position is an open position of the air inlet, and the second position is a blocking position of the air inlet; When the temperature of the brake disc is within a first temperature threshold, the air guide mechanism is switched to the first position to open the air inlet; when the temperature of the brake disc is outside the first temperature threshold, the air guide mechanism is switched to the second position to block the air inlet; The air guide mechanism comprises a driving member and an air guide piece, the driving member can drive the air guide piece to move to the first position or the second position; A temperature sensor is further arranged on the brake disc, and the temperature sensor is electrically connected with the driving member; The mounting seat of the driving member is arranged on the first disc body or the second disc body, the driving shaft of the driving member is connected with the air guide piece, the driving member can control the air guide piece to rotate forward or reversely by a preset angle to realize the switching of the air guide piece between the first position and the second position.

2. The brake disc of claim 1, wherein Multiple second heat dissipation ribs are further arranged, and the second heat dissipation rib is arranged between any two first heat dissipation ribs; The length of the second heat dissipation rib is less than the length of the first heat dissipation rib, and the second heat dissipation rib is arranged at the lower part of the air guide mechanism.

3. The brake disc of claim 1, wherein The driving member is a servo motor.

4. The brake disc of claim 1, wherein The air guide piece is in a rectangular structure or a blade structure.

5. The brake disc of claim 1, wherein, The air guide mechanism is one, and the air guide mechanism is arranged close to the first heat dissipation rib, the length of the air guide piece is equal to the length between adjacent two first heat dissipation ribs.

6. The brake disc of claim 1, wherein, The air guide mechanism is two, and the air guide mechanisms are arranged at the middle position of the air inlet, the length of the air guide pieces of the air guide mechanisms is equal to the length between adjacent two first heat dissipation ribs.

7. A rail vehicle, characterized by The brake disc comprises the brake disc according to any one of claims 1-6.

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