High-speed maglev train bidirectional ram air inlet and maglev train

Abstract

The invention discloses a bidirectional ram air inlet for a high-speed maglev train and a maglev train, wherein the bidirectional ram air inlet comprises an upper cover plate, a lower cover plate, a left guide plate, a right guide plate and a middle guide plate; the two side wing edges of the upper cover plate are bent downward, and the two side wing edges of the lower cover plate are bent upward; the left guide plate and the right guide plate are respectively bent and symmetrical, and both comprise a first guide portion and a second guide portion at an angle, and the width of the first guide portion gradually widens from the end to the bending portion; the upper cover plate, the lower cover plate, the left guide plate and the right guide plate are enclosed to form an opening that gradually widens from both ends to the middle and gradually deepens in depth; the middle guide plate is provided with a guide body, which divides the opening into two symmetrical trumpet-shaped air inlets. The ram air inlet can realize bidirectional efficient air intake, can meet the air intake requirements of the air conditioning system of the bidirectional operation of the maglev train, and reduce the energy consumption of the train at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of maglev trains, and in particular to a bidirectional ram air inlet of a high-speed maglev train. The present invention also relates to a maglev train provided with the bidirectional ram air inlet. Background Art

[0002] At present, my country is developing high-speed maglev trains, which can run at speeds of up to 600km / h. At such a high speed, the aerodynamic performance of the train deteriorates sharply, the resistance and energy consumption problems become prominent, and the pressure outside the train changes dramatically, especially in long and large tunnels. The pressure outside the train drops rapidly, which will have a very adverse effect on the ventilation and air intake of the air-conditioning system.

[0003] The ram air intake is an intake structure that uses the driving speed to force the air flow into the intake duct through the guide port. It is commonly used in motorcycles, high-performance cars and aircraft. It allows a larger flow of air to enter the engine, thereby increasing the engine power.

[0004] As the research on high-speed maglev trains is at the engineering prototype stage, there is no mature experience to draw on. The ram air intakes on motorcycles, high-performance cars and airplanes have great limitations and are generally used to supply air to the engine, not for air-conditioning systems. They cannot be applied across fields to maglev trains and change the application object to air-conditioning systems. Therefore, it is necessary to independently develop a ram air intake suitable for high-speed maglev train air-conditioning systems. Summary of the invention

[0005] The purpose of the present invention is to provide a bidirectional ram air inlet for a high-speed maglev train. The ram air inlet can realize bidirectional efficient air intake, meet the air intake requirements of the air conditioning system of the bidirectional operation of the maglev train, and reduce the energy consumption of the train.

[0006] Another object of the present invention is to provide a maglev train provided with the high-speed maglev train bidirectional ram air inlet.

[0007] To achieve the above-mentioned object, the present invention provides a bidirectional ram air inlet for a high-speed maglev train, comprising an upper cover, a lower cover, a left guide plate, a right guide plate and a middle guide plate; the two side wing edges of the upper cover are bent downward, the middle back of the upper cover is bent downward, the two side wing edges of the lower cover are bent upward, and the middle back of the lower cover is bent downward; the left guide plate and the right guide plate are respectively bent and symmetrical, both of which include a first guide portion and a second guide portion at an angle, and the width of the first guide portion is from the end to the The bending part gradually becomes wider; the upper edges of the left guide plate and the right guide plate are connected to the upper cover plate, and the lower edges of the left guide plate and the right guide plate are connected to the lower cover plate. The upper cover plate, the lower cover plate, the left guide plate, and the right guide plate are enclosed to form an opening that gradually becomes wider and deeper from both ends to the middle; the middle guide plate covers between the front edges of the middle back of the upper cover plate and the lower cover plate, and the inner surface of the middle guide plate is provided with a guide body in the middle position, which divides the opening into two left-right symmetrical trumpet-shaped air inlets.

[0008] Optionally, the cross-section of the flow guide is in the shape of a peak bulging inwards.

[0009] Optionally, an upper notch is opened in the middle of the upper cover plate, and the contour of the upper notch is consistent with the cross-sectional shape of the intermediate guide plate; a lower notch is opened in the middle of the lower cover plate, and the contour of the lower notch is consistent with the cross-sectional shape of the intermediate guide plate; the upper edge and lower edge of the intermediate guide plate are respectively embedded in the upper notch and the lower notch.

[0010] Optionally, the middle backs of the upper cover plate and the lower cover plate and the second guide portions of the left guide plate and the right guide plate form an air duct connected to the two trumpet-shaped air inlets.

[0011] Optionally, the first guide portions of the left guide plate and the right guide plate are connected to the upper cover plate and the lower cover plate along the diagonal directions of the wing edges on both sides of the upper cover plate and the lower cover plate.

[0012] Optionally, both side wing edges of the upper cover plate and the lower cover plate are provided with arc-shaped bending corners in the middle, and the shapes of the upper edge and the lower edge of the first guide part of the left guide plate and the right guide plate are adapted thereto.

[0013] Optionally, there is a spacing between the ends of the two side wing edges of the upper cover plate and the lower cover plate, and they are connected by baffles located at both ends.

[0014] Optionally, both side wing edges of the upper cover plate and the lower cover plate are provided with a circle of inner pads consistent with the outer contour shape thereof on the periphery.

[0015] Optionally, a sealing frame is connected to the end of the air duct, and the sealing frame has a circumferential groove, and a sealing strip is arranged in the groove.

[0016] To achieve the other purpose mentioned above, the present invention provides a maglev train, including a car body and a ram air inlet arranged on the car body, the ram air inlet is the bidirectional ram air inlet of the high-speed maglev train described in any of the above technical solutions, and the bidirectional ram air inlet of the high-speed maglev train is installed in an installation hole at the upper part of the side wall adjacent to the roof.

[0017] Optionally, the outer sides of the upper cover plate, the lower cover plate and the middle guide plate are processed with steps overlapping with the side wall, and the depth of the steps is consistent with the thickness of the outer side plate of the side wall.

[0018] The bidirectional ram air inlet of the high-speed maglev train provided by the present invention has two symmetrical trumpet-shaped air inlets on the left and right, each of which gradually widens and deepens from both ends to the middle, and can realize bidirectional efficient air intake. When the train runs at high speed, air flows to the trumpet-shaped air inlet, the air flow velocity decreases, the pressure and temperature increase, and the air is compressed, and can quickly enter the interior of the air-conditioning unit along the trumpet-shaped air inlet channel, which can meet the air intake requirements of the air-conditioning system of the bidirectional operation of the maglev train and reduce the energy consumption of the train. In addition, the ram air inlet also has an aesthetic effect, and has the characteristics of good aerodynamic performance, simple structure, convenient production, strong bearing capacity, beautiful appearance, and more economy.

[0019] The maglev train provided by the present invention is provided with the high-speed maglev train bidirectional ram air inlet. Since the high-speed maglev train bidirectional ram air inlet has the above-mentioned technical effects, the maglev train provided with the bidirectional ram air inlet should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A longitudinal cross-sectional view of a high-speed maglev train bidirectional ram air inlet matched with a side wall provided by an embodiment of the present invention;

[0021] Figure 2 A transverse cross-sectional view of a high-speed maglev train bidirectional ram air inlet matched with a side wall provided by an embodiment of the present invention;

[0022] Figure 3 An isometric view of a bidirectional ram air inlet and a side wall of a high-speed maglev train provided by an embodiment of the present invention from an outside perspective;

[0023] Figure 4 An isometric view of a bidirectional ram air inlet and a side wall of a high-speed maglev train provided by an embodiment of the present invention from an inner perspective;

[0024] Figure 5 An isometric view of a bidirectional ram air inlet for a high-speed maglev train provided by an embodiment of the present invention;

[0025] Figure 6 An isometric view of a bidirectional ram air intake for a high-speed maglev train provided by an embodiment of the present invention from another perspective;

[0026] Figure 7 It is a schematic diagram of the structure of the mounting holes on the side wall corresponding to the bidirectional ram air intake of the high-speed maglev train;

[0027] Figure 8 It is a schematic diagram of the exploded structure of the bidirectional ram air inlet of a high-speed maglev train;

[0028] Fig. 9 It is the axonometric view of the upper cover plate;

[0029] Fig.10 It is the axonometric view of the lower cover;

[0030] Fig.11 is an axonometric view of the middle guide plate;

[0031] Fig.12 It is a schematic diagram of the local structure in which the sealing frame cooperates with the air conditioner card slot through the sealing strip;

[0032] Fig.13 This is a schematic diagram of the structure of the bidirectional ram air intake of a high-speed maglev train installed on the side wall;

[0033] Fig.14 It is a partial cross-sectional view of the coordination between the bidirectional ram air intake and the side wall of a high-speed maglev train.

[0034] In the figure:

[0035] 10. Bidirectional ram air inlet 11. Upper cover 111. Wing edge 112. Middle back 113. Upper notch 12. Lower cover 121. Wing edge 122. Middle back 123. Lower notch 13. Left guide plate 131. First guide part 132. Second guide part 14. Right guide plate 15. Middle guide plate 151. Guide body 16. Baffle 17. Inner pad 18. Sealing frame 181. Card groove 182. Sealing strip 183. Card edge 20. Maglev train 21. Side wall 22. Mounting hole 23. Step DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] In this article, the terms "upper, lower, inside, outside" and the like are established based on the positional relationships shown in the drawings. The corresponding positional relationships may also change depending on the drawings, and therefore cannot be understood as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second" and the like are merely used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components.

[0038] Please refer to Figures 1 to 7 , Figure 1 A longitudinal cross-sectional view of a high-speed maglev train bidirectional ram air inlet matched with a side wall provided by an embodiment of the present invention; Figure 2 A transverse cross-sectional view of a high-speed maglev train bidirectional ram air inlet matched with a side wall provided by an embodiment of the present invention; Figure 3 An isometric view of a bidirectional ram air inlet and a side wall of a high-speed maglev train provided by an embodiment of the present invention from an outside perspective; Figure 4 An isometric view of a bidirectional ram air inlet and a side wall of a high-speed maglev train provided by an embodiment of the present invention from an inner perspective; Figure 5 An isometric view of a bidirectional ram air inlet for a high-speed maglev train provided by an embodiment of the present invention; Figure 6 An isometric view of a bidirectional ram air intake for a high-speed maglev train provided by an embodiment of the present invention from another perspective; Figure 7 Schematic diagram of the mounting holes on the side wall corresponding to the bidirectional ram air intake of the high-speed maglev train

[0039] As shown in the figure, in a specific embodiment, the bidirectional ram air inlet 10 provided by the present invention is applied to the air-conditioning unit of a high-speed maglev train. It has a shuttle shape with thinner ends and wider middle, and gradually widens from the two ends to the middle. The middle is the air duct leading to the air-conditioning air inlet of the maglev train. The entire bidirectional ram air inlet 10 is installed from the inside of the side wall 21 of the maglev train.

[0040] With two symmetrical trumpet-shaped air inlets on the left and right, each air inlet gradually widens and deepens from both ends to the middle, which can achieve efficient two-way air intake. When the train runs at high speed, the air flows to the trumpet-shaped air inlet, the air flow speed decreases, the pressure and temperature increase, and the air is compressed. It can quickly enter the air conditioning unit along the trumpet-shaped air inlet channel in the direction indicated by the arrow, which can meet the air intake requirements of the air conditioning system of the maglev train running in both directions, while reducing the energy consumption of the train.

[0041] The head of the bidirectional ram air inlet 10 is embedded in the side wall 21 of the maglev train and coincides with the mounting hole 22 on the side wall 21. Its outer surface is a curved surface and is naturally integrated with the body shape. It not only has good aerodynamic performance, simple structure, convenient manufacturing, strong load-bearing capacity, and is more economical, but also has an aesthetic effect and a good appearance.

[0042] Please refer to Figures 8 to 11 , Figure 8 It is a schematic diagram of the exploded structure of the bidirectional ram air inlet of a high-speed maglev train; Fig. 9 It is the axonometric view of the upper cover plate; Fig.10 It is the axonometric view of the lower cover; Fig.11 This is an axonometric view of the middle guide plate.

[0043] As shown in the figure, the bidirectional ram air inlet 10 of a high-speed maglev train is mainly composed of an upper cover plate 11, a lower cover plate 12, a left guide plate 13, a right guide plate 14, a middle guide plate 15, a baffle 16, an inner pad 17 and a sealing frame 18, and the above components are all aluminum alloy components and are connected to each other by welding.

[0044] Specifically, the upper cover plate 11 is generally in a "T" shape and is formed by pressing a thick aluminum plate. The wing edges 111 on both sides are bent downward, and the middle back 112 is bent downward. An upper notch 113 is opened at the front edge of the middle back 112. The contour of the upper notch 113 is consistent with the cross-sectional shape of the middle guide plate 15.

[0045] Similar to the upper cover plate 11 , the lower cover plate 12 is generally in a “T” shape and is formed by pressing thick aluminum plates. The wing edges 121 on both sides thereof are bent upward, and the middle back portion 122 thereof is also bent downward. A lower notch 123 is provided at the front edge of the middle back portion 122 , and the contour of the lower notch 123 is consistent with the cross-sectional shape of the middle guide plate 15 .

[0046] The left guide plate 13 and the right guide plate 14 are arranged on both sides of the air inlet. The left inverted flow plate 13 has the same structure as the right guide plate 14, and is a left-right symmetrical part, which is also formed by pressing a thick aluminum plate. Taking the left guide plate 13 as an example, the left guide plate 13 is bent, and has a first guide portion 131 and a second guide portion 132 at an angle. The upper edge and the lower edge of the first guide portion 131 are generally symmetrical, and its width gradually widens from the end to the bending portion, and the second guide portion 132 is generally fan-shaped; the upper edges of the left guide plate 13 and the right guide plate 14 are welded to the upper cover plate 11, and the lower edges of the left guide plate 13 and the right guide plate 14 are welded to the lower cover plate 12. The upper cover plate 11, the lower cover plate 12, the left guide plate 13, and the right guide plate 14 are enclosed together to form an opening that gradually widens from both ends to the middle and gradually deepens in depth.

[0047] The middle air guide plate 15 is a thick aluminum plate machined part, whose outer surface is consistent with the side wall, covering between the front edges between the upper cover plate 11 and the lower cover plate 12, and its upper edge and lower edge are respectively embedded in the upper notch 113 and the lower notch 123, and are welded to the upper cover plate 11 and the lower cover plate 12. The inner surface of the middle air guide plate 15 is provided with a longitudinal guide body 151 in the middle position. The cross-section of the guide body 151 is in the shape of a peak convex inwardly. The root of the guide body 151 has a smooth transition to the inner surface of the middle air guide plate 15 on both sides. The middle air guide plate 15 divides the entire opening into two left-right symmetrical trumpet-shaped air inlets, which can better collect air and guide air into the interior of the air-conditioning unit.

[0048] The middle back of the upper cover plate 11 and the lower cover plate 12 and the second guide portion 132 of the left guide plate 13 and the right guide plate 14 form an air duct, which is downwardly curved, with two trumpet-shaped air inlets connected at one end and the other end leading to the air-conditioning unit to input the collected air into the air-conditioning unit.

[0049] The first guide portions 131 of the left guide plate 13 and the right guide plate 14 are welded to the upper cover plate 11 and the lower cover plate 12 along the diagonal direction of the side wing edges of the upper cover plate 11 and the lower cover plate 12. The side wing edges of the upper cover plate 11 and the lower cover plate 12 are provided with arc-shaped bending angles in the middle, and the shapes of the upper and lower edges of the first guide portions 131 of the left guide plate 13 and the right guide plate 14 are adapted thereto.

[0050] The two side wing edges of the upper cover plate 11 and the lower cover plate 12 are provided with a circle of inner pads 17 consistent with their outer contour shapes on the periphery. There is a spacing between the ends of the two side wing edges of the upper cover plate 11 and the lower cover plate 12, and they are connected by baffles 16 located at both ends. The inner pads 17 and the baffles 16 are both made of thin aluminum plates and mainly play a sealing role.

[0051] The inner pad 17 is intermittently welded to the upper cover plate 11, the lower cover plate 12, the left guide plate 13, the right guide plate 14, and the middle guide plate 15 in the circumferential direction. The welds in the area where the entire ram air inlet is connected to the external air are fully welded and sealed, and the welds in the remaining unconnected areas are intermittently welded, thereby reducing welding deformation and ensuring the overall shape of the guide plate.

[0052] Please refer to Fig.12 , Fig.12 It is a schematic diagram of the local structure in which the sealing frame cooperates with the air conditioner slot through the sealing strip.

[0053] As shown in the figure, the cross section of the air duct is generally rectangular, and a sealing frame 18 is welded to the rear thereof. The sealing frame 18 has a circumferential groove 181 , and a sealing strip 182 is arranged in the groove 181 .

[0054] Specifically, the sealing frame 18 is made of U-shaped aluminum profiles, and the inside of the slot 181 is used to install the sealing strip 182 so that it can be assembled with the card edge 183 of the air-conditioning unit during assembly. The U-shaped sealing slot structure can reduce unnecessary welds, thereby reducing welding deformation, while ensuring the flatness requirements of the sealing surface.

[0055] The above embodiments are only preferred solutions of the present invention, and are not limited thereto. On this basis, targeted adjustments can be made according to actual needs to obtain different implementation methods. For example, the bidirectional ram air inlet can also be integrally formed with composite materials, or integrally processed with thick aluminum plates. And so on. Since there are many possible implementation methods, they will not be described one by one here.

[0056] Please refer to Fig.13 , Fig.14 , Fig.13 This is a schematic diagram of the structure of the bidirectional ram air intake of a high-speed maglev train installed on the side wall; Fig.14 It is a partial cross-sectional view of the coordination between the bidirectional ram air intake and the side wall of a high-speed maglev train.

[0057] In addition to the above-mentioned high-speed maglev train bidirectional ram air inlet 10, the present invention also provides a maglev train 20, which is composed of a car body and a maglev system arranged at the bottom of the car body. The car body is provided with a ram air inlet for supplying air to the air-conditioning unit. This bidirectional ram air inlet is the high-speed maglev train bidirectional ram air inlet 10 described above.

[0058] According to the position requirement of the air intake of the air-conditioning unit, the bidirectional stamped air intake 10 is located on the upper side of the vehicle body. According to the current existing vehicle cross-sectional structure, it is exactly at the connection position between the side wall 21 and the roof. This results in that the opening of the bidirectional stamped air intake 10 cannot be machined. If manual opening is used, the opening size and accuracy requirements cannot be guaranteed. Therefore, the present application sets the mounting hole 22 of the bidirectional stamped air intake 10 on a profile to ensure the size requirements.

[0059] To this end, it is necessary to re-divide the side wall 21 and the roof profile. Taking into account the side door interface requirements, the air inlet mounting hole 22 is set on the side wall 21, and the joint position between the side wall 21 and the roof structure is moved up to ensure that the two-way stamping air inlet 10 is just arranged on a side wall profile to facilitate processing and size control. However, due to the cross-sectional structural requirements of the vehicle, the joint position cannot be moved upward indefinitely. While ensuring the opening requirements, the upper joint of the side wall profile is as close to the mounting hole 22 as possible.

[0060] After the improvement, the bidirectional ram air inlet 10 is installed on the upper part of the side wall 21 near the roof. Due to the difficulty in forming thick aluminum plates and the need for full welding due to sealing requirements, welding deformation is difficult to control. Taking into account the aesthetic requirements of the outer side of the side wall 21 and ensuring the quality of the outer weld, the outer sides of the upper cover plate 11, the lower cover plate 12, and the middle guide plate 15 are all processed with steps 23 overlapping the side wall 21. The depth of the step 23 is consistent with the thickness of the outer plate of the side wall 21.

[0061] After the two-way stamping air inlet 10 is welded together, when it is welded to the side wall 21, the step 23 can ensure that it is a curved surface after welding. This step 23 not only serves as a welding pad, that is, to ensure the quality of the weld, but also avoids welding deformation of the side wall panel. The inner pad 17 of the two-way stamping air inlet 10 is fitted and connected to the inner plate of the side wall 21, thereby ensuring sealing.

[0062] The above-mentioned welding positions (except the outer side of the ram air inlet and the side wall) are all structured with double-sided grooves, the main purpose of which is to adopt double-sided welding to reduce welding deformation.

[0063] The bidirectional ram air inlet provided by the present invention has the following advantages:

[0064] 1) Excellent aerodynamic performance

[0065] The bidirectional ram air inlet structure is provided with trumpet-shaped air inlets on both sides, which can meet the air intake requirements of the train when running in both directions. When the train runs forward, air enters the air conditioner from the left air inlet, and the specific order is: air → left guide plate 13 → middle guide plate 15 → upper cover plate 11, lower cover plate 12 → inside of the air conditioner. When the train runs backward, the bidirectional air intake function is realized by providing air inlets on both sides, which is consistent with the front.

[0066] By means of the smooth transition design of the upper cover plate 11 , the lower cover plate 12 , the left guide plate 13 , the right guide plate 14 , and the middle guide plate 15 , the air can be better guided.

[0067] 2) Simple structure and easy to install

[0068] The bidirectional ram air inlet is welded from eight parts in total, has a simple structure, is easy to process and install. The middle guide plate 15 is processed from thick aluminum plate instead of being formed by bending the thick aluminum plate, which can save costs.

[0069] 3) Strong carrying capacity

[0070] Through simulation calculation, the upper cover plate 11, the lower cover plate 12, the left guide plate 13, the right guide plate 14, and the middle guide plate 15 are all processed by thick aluminum plates, and the remaining parts are processed by thin plates, which can meet the aerodynamic load of -20000Pa to +7500Pa.

[0071] 4) Aesthetics

[0072] The outer contour of the bidirectional ram air inlet 10 is consistent with the side wall 21 and can be perfectly integrated. At the same time, due to the curved surface structure design of the upper cover plate 11, the lower cover plate 12, the left guide plate 13, the right guide plate 14, and the middle guide plate 15, it has a better appearance effect.

[0073] The bidirectional ram air intake for high-speed maglev train and maglev train provided by the present invention are introduced in detail above. Specific examples are used herein to illustrate the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A bidirectional ram air inlet for a high-speed maglev train, characterized in that: The invention comprises an upper cover plate (11), a lower cover plate (12), a left guide plate (13), a right guide plate (14) and a middle guide plate (15); the two side wings (111) of the upper cover plate (11) are bent downwards, the middle back (112) of the upper cover plate (11) is bent downwards, the two side wings (121) of the lower cover plate (12) are bent upwards, and the middle back (122) of the lower cover plate (12) is bent downwards; the left guide plate (13) and the right guide plate (14) are respectively bent and symmetrical, and both comprise a first guide portion (131) and a second guide portion (132) at an angle, and the width of the first guide portion (131) gradually increases from the end portion to the bending portion. The left and right air guide plates (13) and (14) are connected to the upper cover plate (11), and the lower edges of the left and right air guide plates (13) and (14) are connected to the lower cover plate (12); the upper cover plate (11), the lower cover plate (12), the left air guide plate (13), and the right air guide plate (14) are enclosed to form an opening that gradually widens from both ends to the middle and gradually deepens in depth; the middle air guide plate (15) covers between the front edges of the middle back of the upper cover plate (11) and the lower cover plate (12); a guide body (151) is provided on the inner surface of the middle air guide plate (15) at the middle position, dividing the opening into a left-right symmetrical trumpet-shaped air inlet.

2. The high-speed maglev train bidirectional ram air inlet according to claim 1, characterized in that: The cross section of the flow guide (151) is in the shape of a peak bulging inwards.

3. The high-speed maglev train bidirectional ram air inlet according to claim 2, characterized in that: An upper notch (113) is provided in the middle of the upper cover plate (11), and the contour of the upper notch (113) is consistent with the cross-sectional shape of the intermediate guide plate (15); a lower notch (123) is provided in the middle of the lower cover plate (12), and the contour of the lower notch (123) is consistent with the cross-sectional shape of the intermediate guide plate (15); the upper edge and the lower edge of the intermediate guide plate (15) are respectively embedded in the upper notch (113) and the lower notch (123).

4. The high-speed maglev train bidirectional ram air inlet according to claim 1, characterized in that: The middle backs of the upper cover plate (11) and the lower cover plate (12) and the second air guide portions of the left air guide plate (13) and the right air guide plate (14) form an air duct connected to the two trumpet-shaped air inlets.

5. The high-speed maglev train bidirectional ram air inlet according to claim 1, characterized in that: The first guide portions of the left guide plate (13) and the right guide plate (14) are connected to the upper cover plate (11) and the lower cover plate (12) along the diagonal direction of the wing edges on both sides of the upper cover plate (11) and the lower cover plate (12).

6. The high-speed maglev train bidirectional ram air inlet according to claim 1, characterized in that: The side wing edges of the upper cover plate (11) and the lower cover plate (12) are provided with arc-shaped bending corners in the middle, and the shapes of the upper edge and the lower edge of the first guide portion of the left guide plate (13) and the right guide plate (14) are adapted thereto.

7. The high-speed maglev train bidirectional ram air inlet according to claim 1, characterized in that: There is a spacing between the ends of the two side wing edges of the upper cover plate (11) and the lower cover plate (12), and they are connected via baffles (16) located at both ends.

8. The high-speed maglev train bidirectional ram air inlet according to claim 1, characterized in that: The upper cover plate (11) and the lower cover plate (12) are provided with a circle of inner pads (17) on the outer periphery of both side wings, which are consistent with the outer contour shape thereof.

9. The high-speed maglev train bidirectional ram air inlet according to claim 4, characterized in that: The end of the air duct is connected to a sealing frame (18), the sealing frame (18) having a circumferential slot (181), and a sealing strip (182) is provided in the slot (181).

10. A maglev train, comprising a car body and a ram air inlet arranged on the car body, characterized in that: The ram air inlet is a high-speed maglev train bidirectional ram air inlet (10) as described in any one of claims 1 to 9, and the high-speed maglev train bidirectional ram air inlet (10) is installed in a mounting hole (22) at the upper part of the side wall (21) adjacent to the roof.

11. The maglev train according to claim 10, characterized in that: The outer sides of the upper cover plate (11), the lower cover plate (12) and the middle guide plate (15) are all processed with steps (23) overlapping the side wall (21), and the depth of the step (23) is consistent with the thickness of the outer side plate of the side wall (21).

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