Fairing for a rail vehicle and rail vehicle comprising the same

Abstract

The present disclosure provides a guide device for a rail vehicle and a rail vehicle comprising the guide device, the guide device comprising: two first guide plates, mounted face to face on a top of the rail vehicle, each first guide plate extending in a longitudinal vertical plane; two second guide plates, respectively rotatably mounted between the two first guide plates, such that the two first guide plates and the two second guide plates form a receiving cavity receiving a pantograph of the rail vehicle; a detection unit adapted to detect a flow rate difference of a flow rate of an airflow flowing through windward faces of the two second guide plates in a traveling direction of the rail vehicle; and a control unit configured to control the two second guide plates to rotate relative to a transverse vertical plane according to the flow rate difference, respectively, such that the flow rate difference is within a preset interval range, so as to reduce an aerodynamic drag and a lifting force of the pantograph during traveling of the rail vehicle.

Description

TECHNICAL FIELD

[0001] At least one embodiment of the present disclosure relates to the technical field of flow guiding devices for rail vehicles, and more particularly, to a flow guiding device for a rail vehicle and a rail vehicle comprising the same. BACKGROUND

[0002] With the rapid development of the railway transportation industry, the driving speed of rail vehicles is constantly improving. Under the driving condition of more than 300 km / h, the aerodynamic performance of rail vehicles becomes crucial. In particular, the pantograph, as an important device for rail vehicles to obtain power from the catenary, must face the strong impact of high-speed airflow. This impact not only affects the stability of the pantograph-catenary current collection, but also affects the overall operation safety of the rail vehicle.

[0003] During high-speed driving of the rail vehicle, the pantograph will bear complex aerodynamic loads, including aerodynamic drag and aerodynamic lift. These forces will significantly increase with the increase of vehicle speed. When the aerodynamic load exceeds the design range, the stability and current collection capacity of the pantograph will be severely affected, and even the pantograph-catenary system may fail. In addition, the pantograph will also generate aerodynamic noise under the action of high-speed airflow, which not only affects the comfort of passengers, but also increases the problem of environmental noise pollution.

[0004] To solve the above problems, the existing technology usually adopts the method of setting a flow guiding device on the outside of the pantograph to reduce the impact of high-speed airflow on the pantograph during high-speed driving of the rail vehicle. However, the existing flow guiding devices are usually semi-closed or fully closed. Although the flow guiding devices of these two structures can improve the flow field environment of the pantograph to some extent, they are fixed and cannot adapt to complex and variable driving conditions.

[0005] For example, for a semi-closed flow guiding device, although it can reduce the influence of crosswind effect on the pantograph to some extent, it has limited effect on the high-speed airflow on the windward surface and cannot significantly reduce the aerodynamic drag of the pantograph. For a fully closed flow guiding device, although it can more effectively reduce the aerodynamic drag of the pantograph on the windward surface, it will generate a larger aerodynamic drag and lift, resulting in a decrease in the overall aerodynamic performance of the rail vehicle. SUMMARY

[0006] Therefore, the present disclosure provides a flow guiding device for a rail vehicle to reduce the aerodynamic drag and lift of the pantograph during driving of the rail vehicle.

[0007] According to a first aspect of the present disclosure, a flow guide device for a rail vehicle is provided, comprising: two first flow guide plates, mounted on a top of the rail vehicle facing each other, each of the first flow guide plates extending in a longitudinal vertical plane; two second flow guide plates, respectively rotatably mounted between the two first flow guide plates, such that the two first flow guide plates and the two second flow guide plates form a containing cavity containing a pantograph of the rail vehicle; a detection unit adapted to detect a flow rate difference of an airflow flowing through windward surfaces of the two second flow guide plates in a traveling direction of the rail vehicle; and a control unit configured to control the two second flow guide plates to rotate relative to a transverse vertical plane respectively according to the flow rate difference, such that the flow rate difference is within a preset interval range, so as to reduce an aerodynamic drag and a lifting force of the pantograph during traveling of the rail vehicle.

[0008] According to an embodiment of the present disclosure, the control unit controls the two second flow guide plates to rotate relative to the transverse vertical plane towards a direction of blocking the containing cavity in response to the detection unit detecting that the airflow flowing through the windward surface of the second flow guide plate facing outside of the containing cavity increases, so as to hinder the external airflow from flowing through the inside of the containing cavity; and the control unit controls the two second flow guide plates to rotate relative to the transverse vertical plane towards a direction parallel to the top of the rail vehicle in response to the detection unit detecting that the airflow flowing through the windward surface of the second flow guide plate facing outside of the containing cavity decreases, so as to guide the external airflow to flow through the inside of the containing cavity.

[0009] According to an embodiment of the present disclosure, an angle of rotation of the second flow guide plate with the windward surface facing outside of the containing cavity relative to the transverse vertical plane is greater than an angle of rotation of the second flow guide plate with the windward surface facing inside of the containing cavity relative to the transverse vertical plane.

[0010] According to an embodiment of the present disclosure, an upper limit value of the preset interval gradually decreases as a traveling speed of the rail vehicle increases.

[0011] According to an embodiment of the present disclosure, the preset interval is 0-15 m / s when the traveling speed of the rail vehicle is less than 150 km / h, the preset interval is 0-10 m / s when the traveling speed of the rail vehicle is greater than or equal to 150 km / h and less than or equal to 300 km / h, and the preset interval is 0-5 m / s when the traveling speed of the rail vehicle is greater than 300 km / h.

[0012] According to an embodiment of the present disclosure, the control unit comprises two sets of control assemblies, each set of the control assemblies being mounted on the second guide plates, each set of the control assemblies comprising: two rotating members, each rotating member being mounted on two ends of the second guide plate in the transverse direction, each rotating member being rotatably mounted on the adjacent first guide plate at one end of the second guide plate; and at least one driving assembly connected with the rotating member and configured to drive the second guide plate to rotate relative to the transverse vertical plane through the rotating member.

[0013] According to an embodiment of the present disclosure, the driving assembly comprises: a housing mounted on the first guide plate; a motor mounted in the housing, an output shaft of the motor being connected with the rotating member; and a control unit mounted on the motor and electrically connected with the motor, the control unit being configured to receive the flow rate difference transmitted by the detection unit and control the motor to rotate according to the flow rate difference.

[0014] According to an embodiment of the present disclosure, the detection unit comprises two sets of sensing units, each set of the sensing units being mounted on the second guide plates, each set of the sensing units comprising: two sensors mounted on two sides of the second guide plate in the thickness direction, the two sensors being adapted to detect the flow rate of the airflow flowing through the windward surface of the second guide plate in opposite directions.

[0015] According to an embodiment of the present disclosure, the first guide plate is configured to be substantially trapezoidal, and the second guide plate is configured to be substantially inverted trapezoidal, two second guide plates mounted on the same first guide plate at two ends of the first guide plate in the longitudinal direction on the same side in the transverse direction.

[0016] A second aspect of the present disclosure provides a rail vehicle, comprising: a vehicle body; at least one guide device for rail vehicles according to the above-mentioned embodiments of the present disclosure; and at least one pantograph mounted in the accommodation cavity of the guide device.

[0017] According to the guide device for rail vehicles according to the above-mentioned embodiments of the present disclosure, the detection unit detects the flow rate difference of the airflow flowing through the windward surface of the two second guide plates in the direction of travel of the rail vehicle, and the control unit controls the two second guide plates to rotate relative to the transverse vertical plane according to the flow rate difference, so that the flow rate difference is within the preset interval range, thereby reducing the aerodynamic drag and lifting force of the pantograph during the travel of the rail vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a perspective view of the guide device for rail vehicles according to an embodiment of the present disclosure and a vehicle body;

[0019] Figure 2 is a front view of the guide device for rail vehicles according to an embodiment of the present disclosure and a vehicle body.

[0020] Figure 3 is a top view of a flow guide device and a vehicle body for a rail vehicle according to an embodiment of the present disclosure;

[0021] Figure 4 is a side view of a flow guide device and a vehicle body for a rail vehicle according to an embodiment of the present disclosure;

[0022] Figure 5 is a perspective view of a flow guide device for a rail vehicle according to an embodiment of the present disclosure;

[0023] Figure 6 is a state diagram of a second flow guide plate of a flow guide device for a rail vehicle according to an embodiment of the present disclosure, in a position of blocking a containing cavity;

[0024] Figure 7 is a state diagram of a second flow guide plate of a flow guide device for a rail vehicle according to an embodiment of the present disclosure, in a position parallel to a top of the rail vehicle;

[0025] Figure 8 is a side view of a flow guide device for a rail vehicle according to an embodiment of the present disclosure;

[0026] Figure 9 is a plan view of a first flow guide plate of a flow guide device for a rail vehicle according to an embodiment of the present disclosure;

[0027] Figure 10 is a front view of a second flow guide plate, a sensor, and a rotating member of a flow guide device for a rail vehicle according to an embodiment of the present disclosure;

[0028] Figure 11 is a side view of a second flow guide plate, a sensor, and a rotating member of a flow guide device for a rail vehicle according to an embodiment of the present disclosure;

[0029] Figure 12 is a perspective view of a second flow guide plate of a flow guide device for a rail vehicle according to an embodiment of the present disclosure, in a position parallel to a top of the rail vehicle;

[0030] Figure 13 is a perspective view of a drive assembly of a flow guide device for a rail vehicle according to an embodiment of the present disclosure;

[0031] Figure 14 is a perspective view of a motor of a drive assembly of a flow guide device for a rail vehicle according to an embodiment of the present disclosure;

[0032] Figure 15 is a side view of a motor of a drive assembly of a flow guide device for a rail vehicle according to an embodiment of the present disclosure.

[0033] In the drawings:

[0034] 1 - first flow guide plate;

[0035] 2 - second flow guide plate;

[0036] 3 - accommodation cavity;

[0037] 4 - detection part; 41 - sensing unit; 411 - sensor;

[0038] 5 - control part;

[0039] 51 - control assembly;

[0040] 511 - rotating member;

[0041] 512 - driving assembly; 5121 - housing; 5122 - motor; 5123 - control unit; 5124 - motor controller; 5125 - signal receiver; 5126 - output shaft;

[0042] 6 - vehicle body. DETAILED DESCRIPTION

[0043] To make the objects, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below with reference to specific embodiments and drawings.

[0044] However, it should be understood that these descriptions are merely exemplary, and are not intended to limit the scope of the present disclosure. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. However, it will be apparent to those skilled in the art that one or more embodiments can be practiced without these specific details. In addition, in the following description, descriptions of well-known structures and techniques have been omitted to avoid unnecessary obscuring of the concepts of the present disclosure.

[0045] The terms used herein are merely used to describe specific embodiments, and are not intended to limit the present disclosure. The terms "include", "comprise" and the like used herein indicate the presence of the described features, steps, operations and / or components, but do not exclude the presence or addition of one or more other features, steps, operations or components.

[0046] All terms used herein (including technical and scientific terms) have meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted to have meanings consistent with the context of the present specification, and should not be interpreted in an idealized or overly formal manner.

[0047] According to the inventive concept of one aspect of the present disclosure, a flow guiding device for a rail vehicle is provided, comprising: two first flow guiding plates, which are installed on the top of the rail vehicle facing each other, each of the first flow guiding plates extending in a longitudinal vertical plane; two second flow guiding plates, which are rotatably installed between the two first flow guiding plates respectively, such that a receiving cavity for receiving a pantograph of the rail vehicle is formed between the two first flow guiding plates and the two second flow guiding plates; a detection part, which is adapted to detect a flow rate difference of air flow flowing through windward surfaces of the two second flow guiding plates in a direction of travel of the rail vehicle; and a control part, which is configured to control the two second flow guiding plates to rotate relative to a transverse vertical plane respectively according to the flow rate difference, such that the flow rate difference is within a preset interval range, so as to reduce the aerodynamic drag and the lifting force of the pantograph during travel of the rail vehicle.

[0048] Figure 1 is a perspective view of the flow guiding device for a rail vehicle and a vehicle body according to an embodiment of the present disclosure; Figure 2 is a front view of the flow guiding device for a rail vehicle and a vehicle body according to an embodiment of the present disclosure; Figure 3 is a top view of the flow guiding device for a rail vehicle and a vehicle body according to an embodiment of the present disclosure; Figure 4 is a side view of the flow guiding device for a rail vehicle and a vehicle body according to an embodiment of the present disclosure; Figure 5 is a perspective view of the flow guiding device for a rail vehicle according to an embodiment of the present disclosure.

[0049] According to the exemplary embodiments of the present disclosure, please refer to Figures 1-5 , a flow guiding device for a rail vehicle is provided, comprising two first flow guiding plates 1, two second flow guiding plates 2, a detection part 4 and a control part 5. The two first flow guiding plates 1 are installed on the top of the rail vehicle facing each other, each of the first flow guiding plates 1 extending in a longitudinal vertical plane. The two second flow guiding plates 2 are rotatably installed between the two first flow guiding plates 1 respectively, such that a receiving cavity 3 for receiving a pantograph of the rail vehicle is formed between the two first flow guiding plates 1 and the two second flow guiding plates 2. The detection part 4 is adapted to detect a flow rate difference of air flow flowing through windward surfaces of the two second flow guiding plates 2 in a direction of travel of the rail vehicle. The control part 5 is configured to control the two second flow guiding plates 2 to rotate relative to a transverse vertical plane respectively according to the flow rate difference, such that the flow rate difference is within a preset interval range, so as to reduce the aerodynamic drag and the lifting force of the pantograph during travel of the rail vehicle. Further, the control part 5 is configured to control the two second flow guiding plates 2 to rotate relative to the transverse vertical plane in opposite directions respectively according to the flow rate difference, with the same angle.

[0050] In the embodiment, the detection part 4 is arranged to detect the flow rate difference of the airflow flowing through the windward faces of the two second flow guides 2 in the direction of travel of the rail vehicle, and the control part 5 is arranged to control the rotation of the two second flow guides 2 relative to the transverse vertical plane respectively according to the flow rate difference, so that the flow rate difference is within a preset interval range, thereby reducing the aerodynamic drag and lifting force of the pantograph during the travel of the rail vehicle, and realizing the efficient and stable operation of the rail vehicle under different working conditions.

[0051] It should be noted that, in the embodiment, the windward face refers to the side of the second flow guide 2 that receives the airflow during the travel of the rail vehicle, and the leeward face refers to the other side of the second flow guide 2 opposite to the side that receives the airflow. In the case of traveling with the two ends of the vehicle body 6 as the vehicle head respectively, the windward face and the leeward face of the second flow guide 2 can be interchangeable. For example, Figure 1 Arrow A represents the direction of travel of the rail vehicle, arrow F represents the wind direction, and arrow B represents the windward face of the second flow guide 2.

[0052] Figure 6 is a schematic view of the second flow guide of the flow guide device for the rail vehicle of the embodiment of the present disclosure in a state where the second flow guide is in a position blocking the containing cavity; Figure 7 is a schematic view of the second flow guide of the flow guide device for the rail vehicle of the embodiment of the present disclosure in a state where the second flow guide is in a position parallel to the top of the rail vehicle; Figure 8 is a side view of the flow guide device for the rail vehicle of the embodiment of the present disclosure.

[0053] In some exemplary embodiments, with reference to Figures 5-8 , the control part 5 controls the two second flow guides 2 to rotate relative to the transverse vertical plane respectively towards the direction of blocking the containing cavity 3 in response to the detection part 4 detecting that the airflow flowing through the windward face of the second flow guide 2 towards the outside of the containing cavity 3 increases, so as to hinder the external airflow from flowing through the inside of the containing cavity 3. The control part 5 controls the two second flow guides 2 to rotate relative to the transverse vertical plane respectively towards the direction of being parallel to the top of the rail vehicle in response to the detection part 4 detecting that the airflow flowing through the windward face of the second flow guide 2 towards the outside of the containing cavity 3 decreases, so as to guide the external airflow to flow through the inside of the containing cavity 3.

[0054] In the embodiment, the control part 5 controls the two second flow guides 2 to rotate relative to the transverse vertical plane respectively towards the direction of blocking the containing cavity 3 in response to the detection part 4 detecting that the airflow flowing through the windward face of the second flow guide 2 towards the outside of the containing cavity 3 increases, so as to reduce the airflow flowing into the inside of the containing cavity 3 and reduce the aerodynamic impact of the airflow on the pantograph. At the same time, the control part 5 controls the two second flow guides 2 to rotate relative to the transverse vertical plane respectively towards the direction of blocking the containing cavity 3, so as to reduce the airflow flowing out of the inside of the containing cavity 3 and reduce the exhaust speed of the airflow from the inside of the containing cavity 3, thereby reducing the flow rate difference of the airflow flowing through the windward faces of the two second flow guides 2 and maintaining the stability of the airflow flow field inside the flow guide device.

[0055] Further, the control unit 5, in response to the detection unit 4 detecting an increase in the flow rate of the airflow flowing through the second flow guide plate 2 facing the windward side of the outside of the containing cavity 3, controls the second flow guide plate 2 near the head of the rail vehicle in the direction of travel of the rail vehicle to rotate relative to the transverse vertical plane towards the direction of blocking the containing cavity 3, which can also play a role in decomposing the airflow flowing onto the second flow guide plate 2, reducing the flow rate of the airflow flowing into the inside of the containing cavity 3, and further reducing the aerodynamic impact on the pantograph.

[0056] For example, in the case that the windward angle of the airflow flowing through the second flow guide plate 2 facing the windward side of the outside of the containing cavity 3 is large, for example, the airflow is close to the front windward, at this time, the control unit 5, in response to the detection unit 4 detecting an increase in the flow rate of the airflow flowing through the second flow guide plate 2 facing the windward side of the outside of the containing cavity 3, controls the upper part of the two second flow guide plates 2 to rotate towards the outside of the containing cavity 3 respectively, so that the airflow is partially guided to the outside of the containing cavity 3, to reduce the airflow flow into the inside of the containing cavity 3, reduce the impact on the pantograph, while slowing down the exhaust speed of the airflow in the inside of the containing cavity 3, improving the stability of the flow field, and reducing the vortex generation.

[0057] Further, the control unit 5, in response to the detection unit 4 detecting an increase in the flow rate of the airflow flowing through the second flow guide plate 2 facing the windward side of the outside of the containing cavity 3, controls the second flow guide plate 2 near the head of the rail vehicle in the direction of travel of the rail vehicle to rotate relative to the transverse vertical plane towards the direction of blocking the containing cavity 3, which can also play a role in decomposing the airflow flowing onto the second flow guide plate 2, reducing the flow rate of the airflow flowing into the inside of the containing cavity 3, and further reducing the aerodynamic impact on the pantograph.

[0058] For example, in the case that the windward angle of the airflow flowing through the second flow guide plate 2 facing the windward side of the outside of the containing cavity 3 is large, for example, the airflow is close to the front windward, at this time, the control unit 5, in response to the detection unit 4 detecting an increase in the flow rate of the airflow flowing through the second flow guide plate 2 facing the windward side of the outside of the containing cavity 3, controls the upper part of the two second flow guide plates 2 to rotate towards the outside of the containing cavity 3 respectively, so that the airflow is partially guided to the outside of the containing cavity 3, to reduce the airflow flow into the inside of the containing cavity 3, reduce the impact on the pantograph, while slowing down the exhaust speed of the airflow in the inside of the containing cavity 3, improving the stability of the flow field, and reducing the vortex generation.

[0059] In addition, it needs to be explained that in the present embodiment, the second flow guide plate 2 facing the windward side of the outside of the containing cavity 3 rotates relative to the transverse vertical plane, which plays a role in guiding the airflow; the second flow guide plate 2 facing the windward side of the inside of the containing cavity 3 rotates relative to the transverse vertical plane, which plays a role in adjusting the speed of the airflow flowing out of the inside of the containing cavity 3.

[0060] With the increase of the flow rate of the airflow flowing through the windward surface of the second flow guide plate 2, the opening angle between the edges of the second flow guide plate 2 and the first flow guide plate 1 extending in the longitudinal direction decreases. With the decrease of the flow rate of the airflow flowing through the windward surface of the second flow guide plate 2, the opening angle between the edges of the second flow guide plate 2 and the first flow guide plate 1 extending in the longitudinal direction increases.

[0061] In some example embodiments, with reference to Figures 5-8 , the rotation angle of the second flow guide plate 2 with the windward surface facing the outside of the accommodation cavity 3 relative to the transverse vertical plane is greater than the rotation angle of the second flow guide plate 2 with the windward surface facing the inside of the accommodation cavity 3 relative to the transverse vertical plane.

[0062] It should be noted that in the present embodiment, in the case that the flow rate difference of the airflow flowing through the windward surfaces of the two second flow guide plates 2 is relatively large, the rotation angle of the second flow guide plate 2 with the windward surface facing the outside of the accommodation cavity 3 is relatively large, so as to adjust the speed and direction of the external airflow entering the inside of the accommodation cavity 3. The rotation angle of the second flow guide plate 2 with the windward surface facing the inside of the accommodation cavity 3 is relatively small, so as to adjust the exhaust amount of the airflow. In the case that the flow rate difference of the airflow flowing through the windward surfaces of the two second flow guide plates 2 is relatively small, the rotation angles of the two second flow guide plates 2 can be approximately synchronously rotated.

[0063] In some example embodiments, with the increase of the running speed of the rail vehicle, the upper limit value of the preset interval gradually decreases.

[0064] In some example embodiments, in the case that the running speed of the rail vehicle is less than 150 km / h, the preset interval is 0-15 m / s. In the case that the running speed of the rail vehicle is greater than or equal to 150 km / h and less than or equal to 300 km / h, the preset interval is 0-10 m / s. In the case that the running speed of the rail vehicle is greater than 300 km / h, the preset interval is 0-5 m / s.

[0065] It should be noted that in the present embodiment, in the high-speed running state of the rail vehicle, for example, the running speed is greater than 300 km / h, the airflow fluctuation will have a significant impact on the aerodynamic drag and lifting force of the pantograph and the flow guide device. Therefore, it is necessary to strictly control the preset interval of the flow rate difference of the airflow flowing through the windward surfaces of the two second flow guide plates 2. In the medium-speed running state of the rail vehicle, for example, the running speed is greater than or equal to 150 km / h and less than or equal to 300 km / h, the aerodynamic load of the pantograph and the flow guide device is relatively small at this time, so the preset interval range can be expanded to a certain extent to ensure the stability of the flow field inside the accommodation cavity 3. In the low-speed running state of the rail vehicle, for example, the running speed is less than 150 km / h, the aerodynamic load of the pantograph and the flow guide device is low, and it is only necessary to maintain the stability of the airflow inside the accommodation cavity 3, without the need to strictly control the preset interval.

[0066] Figure 9 is a plan view of a first deflector plate of a deflector device for a rail vehicle according to an embodiment of the present disclosure; Figure 10 is a front view of a second deflector plate, a sensor, and a rotating member of a deflector device for a rail vehicle according to an embodiment of the present disclosure; Figure 11 is a side view of a second deflector plate, a sensor, and a rotating member of a deflector device for a rail vehicle according to an embodiment of the present disclosure; Figure 12 is a perspective view of a second deflector plate of a deflector device for a rail vehicle according to an embodiment of the present disclosure, in a position parallel to the top of the rail vehicle.

[0067] In some example embodiments, with reference to Figures 5-12 The control unit 5 includes two sets of control assemblies 51, each mounted on a second deflector plate 2. Each set of control assemblies 51 includes two rotating members 511 and at least one driving assembly 512. The two rotating members 511 are mounted at the two ends of the second deflector plate 2 in the transverse direction, and each rotating member 511 is rotatably mounted on the adjacent first deflector plate 1 at one end of the second deflector plate 2. The at least one driving assembly 512 is connected to the rotating member 511 and is configured to drive the second deflector plate 2 to rotate relative to the transverse vertical plane through the rotating member 511.

[0068] Through the above arrangement, the driving assembly 512 drives the rotating member 511 to rotate, thereby driving the second deflector plate 2 to rotate relative to the transverse vertical plane, so as to adjust the opening angle of the second deflector plate 2 relative to the edge of the first deflector plate 1 extending in the longitudinal direction, to adjust the airflow flow rate through the inside of the accommodation cavity 3, and further adjust the flow rate difference of the airflow flow rate through the windward surface of the two second deflector plates 2.

[0069] It should be noted that in the present embodiment, one driving assembly 512 can be mounted on each rotating member 511, and the two driving assemblies 512 mounted on the same second deflector plate 2 can move synchronously, or one driving assembly 512 is in a working state and the other driving assembly 512 is in a standby state, to provide a backup driving force for driving the second deflector plate 2 to rotate relative to the transverse vertical plane.

[0070] Figure 13 is a perspective view of a driving assembly of a deflector device for a rail vehicle according to an embodiment of the present disclosure; Figure 14 is a perspective view of a motor of a driving assembly of a deflector device for a rail vehicle according to an embodiment of the present disclosure; Figure 15 is a side view of a motor of a driving assembly of a deflector device for a rail vehicle according to an embodiment of the present disclosure.

[0071] In some example embodiments, with reference to Figures 5-8 , and Figures 13-15The driving assembly 512 comprises a housing 5121, a motor 5122, and a control unit 5123. The housing 5121 is mounted on the first deflector 1. The motor 5122 is mounted inside the housing 5121, and an output shaft 5126 of the motor 5122 is connected with the rotating member 511. The control unit 5123 is mounted on the motor 5122 and electrically connected with the motor 5122, and is configured to receive the flow rate difference transmitted by the detecting part 4 and control the rotation of the motor 5122 according to the flow rate difference.

[0072] By implementing the setting mode, the control unit 5123 controls the rotation angle of the motor 5122 according to the flow rate difference transmitted by the detecting part 4, so as to control the opening and closing angle of the second deflector 2 relative to the edge of the first deflector 1 extending in the longitudinal direction.

[0073] It should be noted that in the embodiment, the control unit 5123 comprises a motor controller 5124 and a signal receiver 5125. The motor controller 5124 is mounted on the motor 5122 and electrically connected with the motor 5122. The signal receiver 5125 is mounted on the motor controller 5124 and electrically connected with the motor controller 5124 and the detecting part 4 respectively. The motor controller 5124 controls the rotation of the motor 5122 according to the flow rate difference transmitted by the signal receiver 5125 from the detecting part 4.

[0074] In some example embodiments, with reference to Figures 5-8 , and Figures 10-12 The detecting part 4 comprises two groups of sensing units 41 mounted on the two second deflectors 2 respectively. Each group of sensing units 41 comprises two sensors 411 mounted on two sides of one second deflector 2 in the thickness direction and adapted to detect the flow rate of the airflow flowing through the windward surface of the second deflector 2 in two opposite directions. It can be understood that since the railway vehicle can travel in two opposite directions, the two sides of each second deflector 2 can be used as the windward surface or the leeward surface based on the travel direction of the railway vehicle.

[0075] It should be noted that in the embodiment, the windward surface and the leeward surface of the second deflector 2 are exchanged when the railway vehicle travels with the two ends of the vehicle body 6 as the vehicle head respectively, and one sensor 411 is mounted on each side of each second deflector 2 in the thickness direction, so that when the railway vehicle changes direction, the sensor 411 can detect the flow rate of the airflow flowing through the side surface as the windward surface regardless of which side surface of the second deflector 2 in the thickness direction is the windward surface.

[0076] In some example embodiments, with reference to Figures 5-10, the first flow guide plate 1 is configured as a substantially trapezoidal shape, and the second flow guide plate 2 is configured as a substantially inverted trapezoidal shape, and two second flow guide plates 2 are respectively installed on both ends of the same first flow guide plate 1 in the longitudinal direction on the same side in the transverse direction. In this way, the accommodating cavity 3 defined by the first flow guide plate 1 and the second flow guide plate 2 is isosceles trapezoidal in the vertical section in the transverse direction and the vertical section in the longitudinal direction. Correspondingly, the control part 5 is further configured to control the two second flow guide plates 2 to rotate in opposite directions relative to the transverse vertical plane with the same angle according to the flow rate difference, so that the vertical section of the accommodating cavity 3 in the longitudinal direction is always isosceles trapezoidal.

[0077] In the embodiment, the first flow guide plate 1 is configured as a substantially trapezoidal shape, and the second flow guide plate 2 is configured as a substantially inverted trapezoidal shape, so as to play a guiding role on the airflow.

[0078] The flow guide device for a rail vehicle according to the embodiment has the following advantages:

[0079] 1. The flow field environment around the pantograph is optimized to reduce the aerodynamic resistance and lifting force of the pantograph during the running of the rail vehicle, thereby improving the overall aerodynamic performance of the rail vehicle, improving the energy efficiency, and reducing the energy consumption of the rail vehicle.

[0080] 2. The airflow passing through the inside of the flow guide device is dynamically controlled to reduce the generation of aerodynamic noise, so that the rail vehicle runs more quietly and provides a more comfortable riding environment for passengers.

[0081] 3. The airflow passing through the inside of the flow guide device is accurately controlled to reduce the lifting force borne by the pantograph, thereby effectively preventing the occurrence of unstable pantograph-catenary contact, enhancing the stability of the pantograph-catenary system, improving the power flow quality of the pantograph, and ensuring the safe operation of the power supply system of the rail vehicle.

[0082] 4. The flow guide device is always in the best state under various complex working conditions, whether it is coping with crosswind, side wind, or vortex generated by high-speed running of the rail vehicle, and can optimize the aerodynamic conditions in real time, thereby greatly improving the adaptability and reliability of the flow guide device.

[0083] 5. The structure is compact, and the detection part 4 and the control part 5 are highly integrated, stable, and responsive.

[0084] 6. In addition, the flow guide device according to the embodiment is designed with easy maintenance in mind, and the key components such as the detection part 4 and the control part 5 are easy to detect and replace, thereby improving the maintainability of the flow guide device and reducing the long-term maintenance cost.

[0085] The above advantages make the flow guiding device have wide application prospects in rail vehicles, especially in the modern high-speed rail vehicle market with increasingly high requirements for aerodynamic performance, and will have important market competitiveness and innovative value.

[0086] According to the exemplary embodiments of the present disclosure, please refer to Figures 1-4 , a rail vehicle is provided, comprising a vehicle body 6, at least one flow guiding device for rail vehicles described in the above embodiments, and at least one pantograph. The at least one pantograph is installed inside the accommodating cavity 3 of the flow guiding device.

[0087] In the present embodiment, by the above arrangement, the aerodynamic drag and lifting force of the pantograph during the driving of the rail vehicle are reduced.

[0088] So far, the embodiments of the present disclosure have been described in detail with reference to the drawings. It should be noted that the implementation modes not shown or described in the drawings or the specification are known to those skilled in the art, and are not described in detail. In addition, the above definitions of each component are not limited to the various specific structures, shapes or modes mentioned in the embodiments, and can be simply changed or replaced by those skilled in the art.

[0089] Those skilled in the art can understand that the features described in various embodiments and / or claims of the present disclosure can be combined and / or integrated in various combinations, even if such combinations or integrations are not explicitly described in the present disclosure. In particular, the features described in various embodiments and / or claims of the present disclosure can be combined and / or integrated in various combinations without departing from the spirit and teachings of the present disclosure. All these combinations and / or integrations fall within the scope of the present disclosure.

[0090] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present disclosure. It should be understood that the above description is only for specific embodiments of the present disclosure and is not intended to limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A flow guiding device for a rail vehicle, comprising: two first flow guiding plates (1) mounted on a top of the rail vehicle facing each other, each of the first flow guiding plates (1) extending in a longitudinal vertical plane; two second flow guiding plates (2) rotatably mounted between the two first flow guiding plates (1) respectively, so that the two first flow guiding plates (1) and the two second flow guiding plates (2) form a containing cavity (3) containing a pantograph of the rail vehicle; a detecting part (4) adapted to detect a flow rate difference of air flow flowing through windward surfaces of the two second flow guiding plates (2) in a traveling direction of the rail vehicle; and a controlling part (5) configured to control the two second flow guiding plates (2) to rotate relative to a transverse vertical plane respectively according to the flow rate difference, so that the flow rate difference is within a preset interval range, to reduce aerodynamic drag and lift of the pantograph during traveling of the rail vehicle.

2. The flow guide device for a rail vehicle according to claim 1, wherein The controlling part (5) controls the two second flow guiding plates (2) to rotate relative to the transverse vertical plane towards a direction of blocking the containing cavity (3) respectively in response to the detecting part (4) detecting that the air flow flowing through the second flow guiding plate (2) with a windward surface towards outside of the containing cavity (3) increases, to hinder the outside air flow flowing through inside of the containing cavity (3); The controlling part (5) controls the two second flow guiding plates (2) to rotate relative to the transverse vertical plane towards a direction parallel to the top of the rail vehicle respectively in response to the detecting part (4) detecting that the air flow flowing through the second flow guiding plate (2) with a windward surface towards outside of the containing cavity (3) decreases, to guide the outside air flow flowing through inside of the containing cavity (3).

3. The flow guide device for a rail vehicle according to claim 2, wherein A rotation angle of the second flow guiding plate (2) with a windward surface towards outside of the containing cavity (3) relative to the transverse vertical plane is greater than a rotation angle of the second flow guiding plate (2) with a windward surface towards inside of the containing cavity (3) relative to the transverse vertical plane.

4. The flow guide device for a rail vehicle according to claim 1, wherein An upper limit value of the preset interval gradually decreases with an increase of a traveling speed of the rail vehicle.

5. The flow guide device for a rail vehicle according to claim 4, wherein In a case that the traveling speed of the rail vehicle is less than 150 km / h, the preset interval is 0-15 m / s; In a case that the traveling speed of the rail vehicle is greater than or equal to 150 km / h and less than or equal to 300 km / h, the preset interval is 0-10 m / s; In a case that the traveling speed of the rail vehicle is greater than 300 km / h, the preset interval is 0-5 m / s.

6. The flow guide device for a rail vehicle according to any one of claims 1-5, wherein, The controlling part (5) comprises two groups of control assemblies (51) mounted on the two second flow guiding plates (2) respectively, each of the control assemblies (51) comprising: two rotating members (511) mounted on two ends of the second flow guiding plate (2) in a transverse direction respectively, each of the rotating members (511) rotatably mounted on an adjacent first flow guiding plate (1) at an end of the second flow guiding plate (2) extending out of the second flow guiding plate (2); and At least one driving assembly (512) is connected with the rotating member (511) and configured to drive the second guide vane (2) to rotate relative to the transverse vertical plane via the rotating member (511).

7. A flow guide device for a rail vehicle according to claim 6, wherein The driving assembly (512) comprises: a housing (5121) mounted on the first guide vane (1); a motor (5122) mounted inside the housing (5121), wherein an output shaft (5126) of the motor (5122) is connected with the rotating member (511); and a control unit (5123) mounted on the motor (5122) and electrically connected with the motor (5122), configured to receive the flow rate difference transmitted by the detection part (4) and control the motor (5122) to rotate according to the flow rate difference.

8. The flow guide device for a rail vehicle according to claim 1, wherein The detection part (4) comprises two groups of sensing units (41) respectively mounted on the two second guide vanes (2); each group of sensing units (41) comprises: two sensors (411) respectively mounted on two sides of one second guide vane (2) in the thickness direction and adapted to detect the flow rate of the airflow flowing through the windward surface of the second guide vane (2) in two opposite directions.

9. The flow guide device for a rail vehicle according to claim 1, wherein The first guide vane (1) is configured in a substantially trapezoidal shape, and the second guide vane (2) is configured in a substantially inverted trapezoidal shape, and two second guide vanes (2) are respectively mounted on the same first guide vane (1) at two ends of the first guide vane (1) in the longitudinal direction on the same side in the transverse direction.

10. A rail vehicle comprising: a vehicle body (6); at least one guide device for rail vehicles according to any one of claims 1-9; and at least one pantograph mounted inside the accommodation cavity (3) of the guide device.

Images