Air spring air supply mechanism and magnetic levitation vehicle

Abstract

The utility model discloses an air spring air supply mechanism and a magnetic levitation vehicle, and relates to the technical field of magnetic levitation railway vehicles. The mechanism is used for conveying compressed gas to the air spring or extracting compressed gas from the air spring, and the control valve assembly is used for adjusting the pressure of the compressed gas in the air spring; a first air port and a second air port are formed in the peripheral wall of the additional air chamber, the first air port is used for being connected with an air spring in a communicating mode, the second air port is used for inputting compressed air into the additional air chamber, a mounting base is arranged on the outer side of the peripheral wall of the additional air chamber, and the second air port penetrates through the mounting base; the peripheral wall of the connecting plate is provided with an air inlet, an air outlet and a control air port, and the air inlet, the air outlet and the control air port are communicated through an air flow channel in the connecting plate; the air inlet is used for inputting compressed air into the connecting plate, the connecting plate is mounted on the mounting base, the air outlet is in butt joint with an air inlet of the additional air chamber, the control valve assembly is mounted on the connecting plate, and the control air port is in butt joint with an air port of the control valve assembly. The mechanism needs a small installation space.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic levitation rail vehicles, and more specifically, to an air spring air supply mechanism. In addition, the utility model also relates to a magnetic levitation vehicle having an air spring air supply mechanism including the air spring air supply mechanism. Background Art

[0002] Existing maglev vehicles usually have air springs on the maglev frame to improve comfort and stability. The air springs are often connected to an air spring control unit through a hose with connectors at both ends, so that air can be supplied to the air springs through the air spring control unit. With the development of technology, in order to achieve the purposes of increasing load-bearing capacity and adjusting riding height, air springs with additional air chambers have gradually appeared. However, the volume of the air spring with the additional air chamber is increased relative to the air spring without the additional air chamber. Therefore, the space required for the installation of air springs, air spring control units and other air circuit systems on the maglev vehicle is relatively large.

[0003] In summary, how to reduce the space required for installing the air spring and its connected components is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, an object of the present invention is to provide an air-spring air supply mechanism which requires less space for installation.

[0005] Another object of the utility model is to provide a magnetic levitation vehicle including an air spring air supply mechanism.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An air spring air supply mechanism is used to deliver compressed gas to an air spring or extract compressed gas from an air spring, comprising:

[0008] A control valve assembly for regulating the pressure of compressed gas in the air spring;

[0009] The additional air chamber has a first air port and a second air port on its peripheral wall, wherein the first air port is used for conducting and connecting the air spring, and the second air port is used for inputting compressed gas into the additional air chamber, and the outer side of the peripheral wall of the additional air chamber has a mounting seat, and the second air port penetrates the mounting seat;

[0010] A connecting plate, whose peripheral wall has an air inlet, an air outlet and a control air port, the air inlet, the air outlet and the control air port are connected through a gas flow channel inside the connecting plate; the air inlet is used to input compressed gas into the connecting plate, the connecting plate is installed on the mounting seat, the air outlet is connected to the air inlet of the additional air chamber, the control valve assembly is installed on the connecting plate, and the control air port is connected to the air port of the control valve assembly.

[0011] Preferably, the first side wall of the connecting plate is opposite to and in contact with the mounting seat, the control valve assembly is installed on the second side wall of the connecting plate, the air inlet is located on the third side wall of the connecting plate, the second side wall is opposite to the first side wall, and the third side wall is adjacent to both the first side wall and the second side wall.

[0012] Preferably, the mounting seat includes a first mounting portion and a second mounting portion that are independent of each other; the second air port passes through the first mounting portion, the first mounting portion is used to fix the first end of the connecting plate; the second mounting portion is used to fix the second end of the connecting plate.

[0013] Preferably, the first mounting portion and the second mounting portion both have a first threaded hole, the connecting plate has a second threaded hole, and threaded rods are inserted into the second threaded hole and the corresponding first threaded hole.

[0014] Preferably, the first mounting portion is a long strip structure, and the first end and the second end of the first mounting portion each have a first threaded hole;

[0015] The two second mounting portions are spaced apart from each other, one of the second mounting portions is close to the first end of the first mounting portion, and the other of the second mounting portions is close to the second end of the first mounting portion, and both of the two second mounting portions have one first threaded hole;

[0016] The four first threaded holes are distributed in a rectangular shape.

[0017] Preferably, the additional air chamber is a columnar structure, the second air port is located at the top of the additional air chamber, and the first air port is located at the side of the additional air chamber;

[0018] The first mounting portion and the second mounting portion both protrude from the additional air chamber, and the end surface of the free end of the first mounting portion and the end surface of the free end of the second mounting portion are both plane and coplanar, and the connecting plate is in surface contact with the mounting seat.

[0019] Preferably, the air outlet is a countersunk hole, the first end of the air outlet close to the outer side of the connecting plate has a larger aperture, and a sealing ring is nested inside the first end of the air outlet.

[0020] Preferably, the peripheral wall of the connecting plate further has a detection gas port, and the detection gas port can be connected to a detector for detecting gas parameters.

[0021] Preferably, the air inlet is a Rc3 / 8 threaded hole.

[0022] A magnetic levitation vehicle comprises an air spring and a suspension frame, and also comprises an air spring air supply mechanism provided by any of the above items, wherein the air spring and the air spring air supply mechanism are both installed on the suspension frame, and the air outlet of the additional air chamber is conductively connected to the inlet of the air spring.

[0023] The utility model provides an air spring air supply mechanism, a control valve assembly connected to an additional air chamber, the hollow additional air chamber can be connected to the control valve assembly through a first air port, and can be connected to an air spring through a second air port, so that the control valve assembly can adjust the air pressure inside the air spring.

[0024] A connecting plate is arranged between the additional air chamber and the control valve assembly, and the connecting plate is provided with an air inlet, an air outlet and a control air port, and the air inlet, the air outlet and the control air port are connected through a gas flow channel inside the connecting plate and along a preset path; in combination, the control valve assembly is mounted on the connecting plate by welding or screws, and after the control valve assembly is installed in place, the control air port is docked with the interface of the control valve assembly, so that the gas flowing out of the connecting plate through the control air port can flow into the control valve assembly; the connecting plate is mounted on the mounting seat of the additional air chamber by welding or screws, and the air outlet is docked with the first air port that penetrates the mounting seat, so that the gas flowing out through the air outlet on the connecting plate can flow into the additional air chamber.

[0025] When in use, the air spring is installed in the additional air chamber so that the second air port is connected to the air spring, and the connecting pipeline is connected at the air inlet. The gas can then flow through the air inlet, the gas flow channel, the control air port, the control valve assembly, the gas flow channel, the air outlet, the first air port, the additional air chamber, and the second air port in sequence to input compressed gas into the air spring.

[0026] The beneficial effect is that the air spring air supply mechanism requires less space for installation by adding a mounting seat on the additional air chamber and connecting the additional air chamber and the control valve assembly through a connecting plate that can be stably connected to the mounting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the structure of a specific embodiment provided by the utility model;

[0029] Figure 2 A top view of a specific embodiment provided by the utility model;

[0030] Figure 3 A top view of an additional air chamber according to a specific embodiment of the present utility model;

[0031] Figure 4 A perspective view of a connecting plate according to a specific embodiment of the present invention;

[0032] Figure 5 A front view of an additional air chamber and an air spring according to a specific embodiment of the utility model;

[0033] Figure 6 A front view of a control valve assembly and a connecting plate of a specific embodiment provided by the utility model;

[0034] Figure 7 It is a partial cross-sectional view of a connecting plate of a specific embodiment provided by the utility model.

[0035] Reference numerals:

[0036] 1-Control valve assembly;

[0037] 2-additional air chamber; 21-first air port; 22-second air port; 23-mounting seat; 231-first mounting portion; 232-second mounting portion; 233-first threaded hole;

[0038] 3-connecting plate; 31-air inlet; 32-air outlet; 33-control air port; 34-gas flow channel; 35-second threaded hole; 36-detection air port;

[0039] 4-threaded rod; 5-sealing ring;

[0040] 6- Air spring. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] The core of the utility model is to provide an empty spring air supply mechanism, which requires a small space for installation. Another core of the utility model is to provide a magnetic levitation vehicle including the empty spring air supply mechanism.

[0043] Please refer to Figure 1 The utility model provides an air spring air supply mechanism for delivering compressed gas to an air spring 6 or extracting compressed gas from an air spring 6, comprising a control valve assembly 1, an additional air chamber 2 and a connecting plate 3. Among them, the control valve assembly 1 is used to adjust the pressure of the compressed gas in the air spring 6; the peripheral wall of the additional air chamber 2 has a first air port 21 and a second air port 22, the first air port 21 is used to connect the air spring 6, and the second air port 22 is used to input compressed gas into the additional air chamber 2, and the outer side of the peripheral wall of the additional air chamber 2 has a mounting seat 23, and the second air port 22 penetrates the mounting seat 23; the peripheral wall of the connecting plate 3 has an air inlet 31, an air outlet 32 ​​and a control air port 33, and the air inlet 31, the air outlet 32 ​​and the control air port 33 are connected through the gas flow channel 34 inside the connecting plate 3; the air inlet 31 is used to input compressed gas into the inside of the connecting plate 3, the connecting plate 3 is installed on the mounting seat 23, the air outlet 32 ​​is connected to the air inlet of the additional air chamber 2, the control valve assembly 1 is installed on the connecting plate 3, and the control air port 33 is connected to the air port of the control valve assembly 1.

[0044] The control valve assembly 1 is connected to the additional air chamber 2. The control valve assembly 1 can adopt a height valve, a throttle valve, and the hollow additional air chamber 2 can be connected to the control valve assembly 1 through the first air port 21, and can be connected to the air spring 6 through the second air port 22. The control valve assembly 1 can adjust the air pressure inside the air spring 6. The control valve assembly 1 can adopt a height valve and / or a reversing valve, etc.

[0045] A connecting plate 3 is provided between the additional air chamber 2 and the control valve assembly 1. The connecting plate 3 is provided with an air inlet 31, an air outlet 32 ​​and a control air port 33. The air inlet 31, the air outlet 32 ​​and the control air port 33 are connected through a gas flow channel 34 inside the connecting plate 3 along a preset path.

[0046] In some possible embodiments, the connecting plate 3 adopts a seat structure, the gas flow channel 34 is a hole opened inside the connecting plate 3, and the gas flow channel 34 runs through the connecting plate 3, then the air inlet 31, the air outlet 32 ​​and the control air port 33 are all holes opened by the gas flow channel 34 on the connecting plate 3 and close to the outer side surface of the connecting plate 3.

[0047] In some possible embodiments, the connecting plate 3 includes an outer shell and a pipeline, and the air inlet 31, the air outlet 32 ​​and the control air port 33 are all through holes opened on the outer peripheral wall. The pipeline connects the air inlet 31, the air outlet 32 ​​and the control air port 33, and the gas flow channel 34 is the inner cavity of the pipeline.

[0048] Of course, the connection plate 3 is not limited to the above-mentioned types, as long as it can achieve the above-mentioned functions.

[0049] In coordination, each valve in the control valve assembly 1 is installed on the connecting plate 3 by welding or screws. After the control valve assembly 1 is installed in place, the control air port 33 is docked with the interface of the control valve assembly 1, so that the gas flowing out of the connecting plate 3 through the control air port 33 can flow into the control valve assembly 1; and the connecting plate 3 is installed on the mounting seat 23 of the additional air chamber 2 by welding or screws. The additional air chamber 2 includes an additional air chamber 2 main body and a mounting seat 23. The mounting seat 23 is arranged on the additional air chamber 2 main body by post-processing methods such as welding or riveting, or the additional air chamber 2 main body and the mounting seat 23 are integrally formed, and the air outlet 32 ​​is docked with the first air port 21 that passes through the mounting seat 23, so that the gas flowing out through the air outlet 32 ​​on the connecting plate 3 can flow into the additional air chamber 2.

[0050] When in use, the air spring 6 is installed in the additional air chamber 2, so that the second air port 22 is connected to the air spring 6, and the connecting pipeline is connected at the air inlet 31. The gas can flow through the air inlet 31, the gas flow channel 34, the control air port 33, the control valve assembly 1, the gas flow channel 34, the air outlet 32, the first air port 21, the additional air chamber 2, and the second air port 22 in sequence to input compressed gas to the air spring 6.

[0051] The air spring air supply mechanism is achieved by adding a mounting seat 23 on the additional air chamber 2, and the control valve assembly 1 is arranged on the connecting plate 3. The connecting plate 3 is fixedly connected to the mounting seat 23 and conducts to connect the additional air chamber 2 and the control valve assembly 1, so that the space required for the installation of the air spring air supply mechanism is smaller.

[0052] Based on the above embodiment, the first side wall of the connecting plate 3 is opposite to and in contact with the mounting seat 23, the control valve assembly 1 is installed on the second side wall of the connecting plate 3, the air inlet 31 is located on the third side wall of the connecting plate 3, the second side wall is opposite to the first side wall, and the third side wall is adjacent to both the first side wall and the second side wall.

[0053] like Figure 1 As shown, an air outlet 32 ​​is provided on the left side wall of the connecting plate 3. After assembly, the left side wall of the connecting plate 3 abuts against the end face of the free end of the mounting seat 23 to fix the connecting plate 3 on the additional air chamber 2. A control air port 33 is provided on the right side wall of the connecting plate 3 for connecting the control component, and an air inlet 31 is provided on the front side wall of the connecting plate 3 adjacent to its own left and right walls. With this arrangement, the air spring air supply mechanism can be conveniently and reasonably installed on the maglev vehicle, thereby delivering gas to the air spring 6.

[0054] Based on the above embodiment, the mounting seat 23 includes a first mounting portion 231 and a second mounting portion 232 that are independent of each other; the second air port 22 passes through the first mounting portion 231, and the first mounting portion 231 is used to be fixedly connected to the first end of the connecting plate 3; the second mounting portion 232 is used to be fixedly connected to the second end of the connecting plate 3.

[0055] like Figure 1 and Figure 5 As shown, a first mounting portion 231 and a second mounting portion 232 are independently provided on the additional air chamber 2, the second air port 22 is opened on the first mounting portion 231, and the upper end of the connecting plate 3 is connected to the first mounting portion 231, and the lower end of the connecting plate 3 is connected to the second mounting portion 232. In this arrangement, the connecting plate 3 can be stably set on the additional air chamber 2, and the dead weight of the air spring air supply mechanism can be effectively reduced.

[0056] On the basis of the above embodiment, the first mounting portion 231 and the second mounting portion 232 both have a first threaded hole 233 , the connecting plate 3 has a second threaded hole 35 , and threaded rods 4 are inserted into the second threaded hole 35 and the corresponding first threaded hole 233 .

[0057] like Figure 3 and Figure 5 As shown, a first threaded hole 233 is formed on the first mounting portion 231 and the second mounting portion 232, and the first threaded hole 233 is a blind hole, and a second threaded hole 35 is formed on the connecting plate 3 to match, and the second threaded hole 35 passes through the connecting plate 3 in the thickness direction. During assembly, the connecting plate 3 is placed at a preset position of the additional air chamber 2, so that each second threaded hole 35 is collinear with the corresponding first threaded hole 233, and the threaded rod 4 is screwed into the collinear first threaded hole 233 and the second threaded hole 35, so that the connecting plate 3 can be fixed on the additional air chamber 2. With such an arrangement, the air spring air supply mechanism is convenient for assembly and maintenance operations.

[0058] On the basis of the above embodiment, the first mounting portion 231 is a long strip structure, and the first end and the second end of the first mounting portion 231 each have a first threaded hole 233; the two second mounting portions 232 are distributed at intervals, one second mounting portion 232 is close to the first end of the first mounting portion 231, and the other second mounting portion 232 is close to the second end of the first mounting portion 231, and the two second mounting portions 232 each have a first threaded hole 233; the four first threaded holes 233 are distributed in a rectangular shape.

[0059] like Figure 5As shown, the first mounting portion 231 adopts a long strip structure extending in the transverse direction, while the second mounting portion 232 adopts a rectangular block structure, and one second mounting portion 232 is arranged on the left side, and the other second mounting portion 232 is arranged on the right side, and the four first threaded holes 233 on the first mounting portion 231 and the second mounting portion 232 are distributed in a rectangular shape. With this arrangement, the connecting plate 3 can be stably set on the additional air chamber 2, and the dead weight of the air spring air supply mechanism can be further reduced.

[0060] On the basis of the above embodiment, the additional air chamber 2 is a columnar structure, the second air port 22 is located at the top of the additional air chamber 2, and the first air port 21 is located on the side of the additional air chamber 2; the first mounting portion 231 and the second mounting portion 232 both protrude from the additional air chamber 2, and the end surface of the free end of the first mounting portion 231 and the end surface of the free end of the second mounting portion 232 are both flat and coplanar, and the connecting plate 3 and the mounting seat 23 are in surface contact.

[0061] like Figures 1 to 3 As shown, a second air port 22 is opened at the end of the columnar additional air chamber 2. When in use, the air spring 6 can be installed at the end of the additional air chamber 2, and the inner cavity of the air spring 6 is connected through the second air port 22; in conjunction, a first air port 21 is opened on the side of the columnar additional air chamber 2. After assembly, the connecting plate 3 is installed on the side of the additional air chamber 2, and the second air port 22 is connected to the air outlet 32 ​​to connect the inner cavity of the connecting plate 3 with the inner cavity of the additional air chamber 2. With this arrangement, the air spring air supply mechanism is reasonably laid out, which is convenient for being installed on the maglev vehicle.

[0062] Furthermore, the mounting seat 23 is located on the side of the columnar additional air chamber 2, and the mounting seat 23 protrudes from the additional air chamber 2 to facilitate the setting of the connecting plate 3, wherein the first mounting portion 231 and the second mounting portion 232 are coplanarly arranged. During installation, the connecting plate 3 is placed on the mounting seat 23. At this time, the side surface of the connecting plate 3 is in surface contact with the end surface of the free end of the mounting seat 23, and then the connecting plate 3 is fixed to the mounting seat 23 by the threaded rod 4. Such a setting is conducive to improving the connection stability between the connecting plate 3 and the additional air chamber 2.

[0063] On the basis of the above embodiment, the air outlet 32 ​​is a countersunk hole, the first end of the air outlet 32 ​​close to the outer side of the connecting plate 3 has a larger aperture, and a sealing ring 5 is embedded inside the first end of the air outlet 32. Figure 7 As shown, when in use, after the connecting plate 3 and the mounting seat 23 are assembled in place, a sealing ring 5 is sandwiched between the first air port 21 of the additional air chamber 2 and the air outlet 32 ​​of the connecting plate 3. The sealing ring 5 can be an O-ring 5 or a V-ring 5, etc. Such a setting is beneficial to improving the sealing performance between the connecting plate 3 and the additional air chamber 2.

[0064] Furthermore, the air inlet 31, the control air port 33, etc. on the connecting plate 3 are countersunk, and the first end of the countersunk hole close to the outer side of the connecting plate 3 has a larger aperture, and a sealing ring 5 is nested inside the first end of the air inlet 31 and the control air port 33 to further improve the sealing performance of the air spring air supply mechanism.

[0065] In some possible embodiments, the six second air ports 22 are annular and evenly distributed, such as Figure 3 As shown, in order to connect the air spring 6 and provide the air spring 6 with sufficient compressed gas.

[0066] On the basis of the above-mentioned embodiment, the peripheral wall of the connecting plate 3 further has a detection gas port 36 , and the detection gas port 36 can be connected to a detector for detecting gas parameters.

[0067] like Figure 1 and Figure 4 As shown, a detection port is also provided on the connecting plate 3, and the detection port is connected with the air inlet 31, the air outlet 32, and the control air port 33 through an air flow channel, so that the parameters of the gas flowing through the connecting plate 3 can be detected by a detector, and the detector can be a pressure gauge or a flow meter, etc.

[0068] On the basis of the above-mentioned embodiment, the air inlet 31 is a Rc3 / 8 threaded hole for connecting the pipeline of the magnetic levitation vehicle and facilitating stable connection.

[0069] In addition to the above-mentioned air spring air supply mechanism, the utility model also provides a maglev vehicle having an air spring air supply mechanism including the air spring air supply mechanism disclosed in the above-mentioned embodiment, and also including an air spring 6 and a suspension frame. The air spring 6 and the air spring air supply mechanism are both installed on the suspension frame. The air outlet 32 ​​of the additional air chamber 2 is connected to the inlet of the air spring 6. Please refer to the prior art for the structures of other parts of the maglev vehicle, which will not be repeated in this article.

[0070] It should be noted that the relational terms such as "first" and "second" mentioned above are merely used to distinguish one entity from other entities, and do not necessarily require or imply any actual relationship or order between these entities; the "upper surface, lower surface, top, bottom" and the directional words "upper, lower, left, right" mentioned above are all defined based on the drawings in the specification.

[0071] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0072] The above is a detailed introduction to the air spring air supply mechanism and the magnetic levitation vehicle provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the utility model.

Claims

1. An air spring air supply mechanism for delivering compressed gas to an air spring (6) or extracting compressed gas from an air spring (6), characterized in that: include: A control valve assembly (1) for adjusting the pressure of compressed gas in an air spring (6); The additional air chamber (2) has a first air port (21) and a second air port (22) on its peripheral wall, the first air port (21) being used for conducting and connecting to an air spring (6), the second air port (22) being used for inputting compressed gas into the additional air chamber (2), and a mounting seat (23) being provided on the outer side of the peripheral wall of the additional air chamber (2), the second air port (22) penetrating the mounting seat (23); A connecting plate (3) has a peripheral wall with an air inlet (31), an air outlet (32) and a control air port (33); the air inlet (31), the air outlet (32) and the control air port (33) are connected through a gas flow channel (34) inside the connecting plate (3); the air inlet (31) is used to input compressed gas into the connecting plate (3); the connecting plate (3) is mounted on the mounting seat (23); the air outlet (32) is connected to the air inlet of the additional air chamber (2); the control valve assembly (1) is mounted on the connecting plate (3); and the control air port (33) is connected to the air port of the control valve assembly (1).

2. The air spring air supply mechanism according to claim 1, characterized in that: The first side wall of the connecting plate (3) is opposite to and in contact with the mounting seat (23), the control valve assembly (1) is mounted on the second side wall of the connecting plate (3), the air inlet (31) is located on the third side wall of the connecting plate (3), the second side wall is opposite to the first side wall, and the third side wall is adjacent to both the first side wall and the second side wall.

3. The air spring air supply mechanism according to claim 2, characterized in that: The mounting seat (23) comprises a first mounting portion (231) and a second mounting portion (232) which are independent of each other; the second air port (22) passes through the first mounting portion (231); the first mounting portion (231) is used for fixedly connecting the first end of the connecting plate (3); and the second mounting portion (232) is used for fixedly connecting the second end of the connecting plate (3).

4. The air spring air supply mechanism according to claim 3, characterized in that: The first mounting portion (231) and the second mounting portion (232) both have a first threaded hole (233), the connecting plate (3) has a second threaded hole (35), and threaded rods (4) are inserted into the second threaded hole (35) and the corresponding first threaded hole (233).

5. The air spring air supply mechanism according to claim 4, characterized in that: The first mounting portion (231) is a long strip structure, and the first end and the second end of the first mounting portion (231) each have a first threaded hole (233); The two second mounting portions (232) are spaced apart from each other, one of the second mounting portions (232) is close to the first end of the first mounting portion (231), and the other of the second mounting portions (232) is close to the second end of the first mounting portion (231), and both of the two second mounting portions (232) have a first threaded hole (233); The four first threaded holes (233) are distributed in a rectangular shape.

6. The air spring air supply mechanism according to claim 5, characterized in that: The additional air chamber (2) is a columnar structure, the second air port (22) is located at the top of the additional air chamber (2), and the first air port (21) is located at the side of the additional air chamber (2); The first mounting portion (231) and the second mounting portion (232) both protrude from the additional air chamber (2), and the end surface of the free end of the first mounting portion (231) and the end surface of the free end of the second mounting portion (232) are both plane and coplanar, and the connecting plate (3) and the mounting seat (23) are in surface contact with each other.

7. The air spring air supply mechanism according to claim 1, characterized in that: The air outlet (32) is a countersunk hole, and the first end of the air outlet (32) close to the outer side of the connecting plate (3) has a larger hole diameter, and a sealing ring (5) is embedded inside the first end of the air outlet (32).

8. The air spring air supply mechanism according to any one of claims 1 to 6, characterized in that: The peripheral wall of the connecting plate (3) also has a detection gas port (36), and the detection gas port (36) can be connected to a detector for detecting gas parameters.

9. The air spring air supply mechanism according to any one of claims 1 to 6, characterized in that: The air inlet (31) is a Rc3 / 8 threaded hole.

10. A magnetic levitation vehicle, comprising an air spring (6) and a suspension frame, characterized in that: It also includes the air spring air supply mechanism as described in any one of claims 1 to 9 above, the air spring (6) and the air spring air supply mechanism are both installed on the suspension frame, and the air outlet (32) of the additional air chamber (2) is connected to the inlet of the air spring (6).

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