Air suspension device for maglev train

Abstract

The utility model belongs to the technical field of maglev trains, and particularly relates to an air suspension device for a maglev train, which comprises a damping column and a bottom fixing frame, the bottom fixing frame is welded on the damping column, a telescopic connecting seat is mounted at the top of the damping column, a telescopic connecting column is movably inserted into an inner cavity of the telescopic connecting seat, and the bottom fixing frame is welded on the bottom fixing frame. The top of the telescopic connecting column is connected with a top fixing disc, the bottom of the telescopic connecting seat is connected with a bottom fixing disc, air bags are arranged on the surfaces of the telescopic connecting seat and the telescopic connecting column, and the two ends of each air bag are connected with the top fixing disc and the bottom fixing disc respectively; in the working process of the novel air suspension, oil liquid can be pumped through the oil injection pump and injected into the oil outlet ring, the oil outlet ring injects the oil liquid into the surface of the telescopic connecting column through the oil outlet hole, the surface of the telescopic connecting column can be lubricated, abrasion generated when the telescopic connecting column ascends and descends is reduced, and the service life of the telescopic connecting column is prolonged. And the service life of the air suspension is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of magnetic levitation train technology, specifically to an air suspension device for magnetic levitation trains. Background Technology

[0002] The secondary suspension system of a maglev train is a device located between the car body and the suspension frame, which plays a role in mitigating vibration and impact. Each car has a total of 20 air suspension devices that support the car body. The air suspension system of the maglev train is a key component to ensure its smooth operation and passenger comfort. It is mainly composed of rubber air springs and linear bearings.

[0003] Currently, patent CN208006975U discloses an air suspension device for maglev trains. The air suspension device includes an air spring assembly and a sliding platform assembly. The sliding platform assembly is mounted on top of the air spring assembly, and its bottom is mounted on a suspension frame. Air inlets are located on both sides of the sliding platform assembly. The advantages of this invention are: it avoids extensive welding work, reducing costs through mass production; it can meet the requirements of all interfaces at different locations, avoiding the common problem of incorrect assembly positions for multiple similar structures.

[0004] Existing maglev trains require air suspension to support the wheels when starting and stopping. The wheels vibrate as they move on the rails, which compresses the airbags. The guide mechanism inside the airbags constantly expands and contracts, which accelerates the wear of the guide mechanism and affects the service life of the air suspension. To solve the above problems, this application proposes an air suspension device for maglev trains. Utility Model Content

[0005] (I) Purpose of the utility model

[0006] To address the technical problems existing in the background art, this utility model proposes an air suspension device for maglev trains. During operation, the air suspension can draw oil through an oil pump and inject the oil into an oil outlet ring. The oil outlet ring injects oil onto the surface of the telescopic connecting column through an oil outlet hole, which can lubricate the surface of the telescopic connecting column, thereby reducing wear on the telescopic connecting column during lifting and lowering movements and extending the service life of the air suspension, thus solving the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To solve the above-mentioned technical problems, this utility model provides an air suspension device for maglev trains, including a shock-absorbing column and a bottom fixing frame. The bottom fixing frame is welded to the shock-absorbing column. A telescopic connecting seat is installed on the top of the shock-absorbing column. A telescopic connecting column is movably inserted into the inner cavity of the telescopic connecting seat. A top fixing plate is connected to the top of the telescopic connecting column. A bottom fixing plate is connected to the bottom of the telescopic connecting seat. An airbag is provided on the surface of the telescopic connecting seat and the telescopic connecting column. The two ends of the airbag are respectively connected to the top fixing plate and the bottom fixing plate.

[0009] An oil injection pipe is conductively connected to the top fixed plate. An oil injection pump and an oil injection solenoid valve are respectively installed on the oil injection pipe. An oil outlet ring is sleeved on the top of the telescopic connecting column, and the oil outlet ring is connected to the oil injection pipe.

[0010] Preferably, the oil outlet ring is connected to the oil injection pipe, and the surface of the oil outlet ring is provided with an oil outlet hole.

[0011] Preferably, a top fixing bracket is welded to the surface of the top fixing plate.

[0012] Preferably, the bottom of the bottom fixing plate is connected to a drain pipe, and the drain pipe is connected to the airbag.

[0013] Preferably, a discharge solenoid valve is installed on the discharge pipe.

[0014] Preferably, the outer wall surface of the telescopic connecting column is provided with a limiting seat, which is located below the oil outlet ring.

[0015] Preferably, the bottom of the bottom fixing plate is connected to an air injection pipe and an exhaust pipe, and the air injection pipe and the exhaust pipe are arranged symmetrically.

[0016] The above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0017] 1. In this utility model, the expansion and contraction of the airbag during inflation and deflation can drive the telescopic connecting column to rise and fall within the telescopic connecting seat. The telescopic connecting column and the telescopic connecting seat work together to guide the expansion and contraction of the airbag, thereby improving the lifting accuracy of the air suspension. The oil injection pipe is connected to the oil injection equipment. After the oil injection solenoid valve is opened, the oil injection pump can draw oil and inject it into the oil outlet ring. The oil outlet ring injects oil onto the surface of the telescopic connecting column through the oil outlet hole, which can lubricate the surface of the telescopic connecting column and reduce wear on the telescopic connecting column during lifting and lowering.

[0018] 2. In this utility model, after the discharge solenoid valve is opened, the gas in the airbag can be discharged through the discharge pipe. When the air in the airbag is discharged quickly, the airflow can discharge the debris generated by the wear of the moving components in the airbag, which can reduce the damage of debris to the airbag, improve the protection of the airbag, and extend the service life of the airbag. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an air suspension device for a magnetic levitation train according to the present invention.

[0020] Figure 2 This is a cross-sectional structural schematic diagram of an air suspension device for a magnetic levitation train according to the present invention.

[0021] Figure 3 This is a schematic diagram of the airbag structure of an air suspension device for a magnetic levitation train according to the present invention.

[0022] Figure 4 This is an exploded structural diagram of an air suspension device for a magnetic levitation train according to the present invention.

[0023] Figure label:

[0024] 1. Shock absorber column; 2. Bottom mounting bracket; 3. Telescopic connecting seat; 4. Telescopic connecting column; 5. Top mounting plate; 6. Top mounting bracket; 7. Oil injection pipe; 8. Oil injection pump; 9. Oil injection solenoid valve; 10. Airbag; 11. Bottom mounting plate; 12. Drain pipe; 13. Drain solenoid valve; 14. Limit seat; 15. Air injection pipe; 16. Exhaust pipe; 17. Oil outlet ring. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0026] like Figure 1-4 As shown, the present invention proposes an air suspension device for a maglev train, comprising a shock-absorbing column 1 and a bottom fixing frame 2. The bottom fixing frame 2 is welded to the shock-absorbing column 1. A telescopic connecting seat 3 is installed on the top of the shock-absorbing column 1. A telescopic connecting column 4 is movably inserted into the inner cavity of the telescopic connecting seat 3. A top fixing plate 5 is connected to the top of the telescopic connecting column 4. A bottom fixing plate 11 is connected to the bottom of the telescopic connecting seat 3. An airbag 10 is provided on the surface of the telescopic connecting seat 3 and the telescopic connecting column 4. The two ends of the airbag 10 are respectively connected to the top fixing plate 5 and the bottom fixing plate 11.

[0027] An oil injection pipe 7 is conductively connected to the top fixed plate 5. An oil injection pump 8 and an oil injection solenoid valve 9 are respectively installed on the oil injection pipe 7. An oil outlet ring 17 is sleeved on the top of the telescopic connecting column 4. The oil outlet ring 17 is connected to the oil injection pipe 7. The surface of the oil outlet ring 17 is provided with an oil outlet hole.

[0028] It should be noted that during the inflation and deflation process, the expansion and contraction of the airbag 10 can drive the telescopic connecting column 4 to rise and fall within the telescopic connecting seat 3. The telescopic connecting column 4 and the telescopic connecting seat 3 work together to guide the expansion and contraction of the airbag 10, thereby improving the lifting accuracy of the air suspension. The oil injection pipe 7 is connected to the oil injection equipment. After the oil injection solenoid valve 9 is opened, the oil injection pump 8 can draw oil and inject it into the oil outlet ring 17. The oil outlet ring 17 injects oil onto the surface of the telescopic connecting column 4 through the oil outlet hole, which can lubricate the surface of the telescopic connecting column 4 and reduce wear on the telescopic connecting column 4 during the lifting and lowering movement.

[0029] In this embodiment, as Figure 1 As shown, a top fixing bracket 6 is welded to the surface of the top fixing plate 5.

[0030] It should be noted that the top of the air suspension is secured by the top mounting bracket 6.

[0031] In this embodiment, as Figure 1 As shown, the bottom of the bottom fixing plate 11 is connected to a drain pipe 12, which is connected to the airbag 10. A drain solenoid valve 13 is installed on the drain pipe 12.

[0032] It should be noted that after the discharge solenoid valve 13 is opened, the gas inside the airbag 10 can be discharged through the discharge pipe 12. When the air inside the airbag 10 is discharged quickly, the airflow can expel the debris generated by the wear of the moving components inside the airbag 10, which can reduce the damage of debris to the airbag 10, improve the protection of the airbag 10, and extend the service life of the airbag 10.

[0033] In this embodiment, as Figure 4 As shown, the outer wall surface of the telescopic connecting column 4 is provided with a limiting seat 14, which is located below the oil outlet ring 17.

[0034] It should be noted that the limiting seat 14 can limit the lifting and lowering movement of the telescopic connecting column 4.

[0035] In this embodiment, as Figure 2 As shown, the bottom fixing plate 11 is connected to an air injection pipe 15 and an exhaust pipe 16 at its bottom, and the air injection pipe 15 and the exhaust pipe 16 are arranged symmetrically.

[0036] It should be noted that air can be injected into the inner cavity of the airbag 10 through the air injection tube 15, and when the airbag 10 is to be deflated, air can be discharged through the exhaust tube 16, thus realizing the inflation and deflation of the airbag 10.

[0037] The working principle and usage process of this utility model: The top and bottom of the air suspension are fixed by the bottom fixing bracket 2 and the top fixing bracket 6 respectively. Air can be inflated into the inner cavity of the airbag 10 through the air injection pipe 15. When deflating the airbag 10, air can be discharged through the exhaust pipe 16, thus realizing the inflation and deflation of the airbag 10. During the inflation and deflation process, the expansion and contraction of the airbag 10 can drive the telescopic connecting column 4 to rise and fall within the telescopic connecting seat 3. The telescopic connecting column 4 and the telescopic connecting seat 3 work together to guide the expansion and contraction of the airbag 10, thereby improving the lifting accuracy of the air suspension. The oil injection pipe 7 is connected to the oil injection equipment. After the oil injection solenoid valve 9 is opened, the oil injection pump 8 can draw oil and inject it into the oil outlet ring 17. The oil outlet ring 17 injects oil onto the surface of the telescopic connecting column 4 through the oil outlet hole, which can lubricate the surface of the telescopic connecting column 4 and reduce wear during the lifting and lowering movement. After the discharge solenoid valve 13 is opened, the gas in the airbag 10 can be discharged through the discharge pipe 12. When the air in the airbag 10 is discharged quickly, the airflow can discharge the debris generated by the wear of the moving components in the airbag 10, which can reduce the damage of debris to the airbag 10, improve the protection of the airbag 10, and extend the service life of the airbag 10.

[0038] It should be understood that the above-described specific embodiments of this utility model are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims or their equivalents.

Claims

1. An air suspension device for a magnetic levitation train, comprising a shock-absorbing column (1) and a bottom fixing frame (2), said bottom fixing frame (2) being welded to the shock-absorbing column (1), characterized in that, The shock-absorbing column (1) is equipped with a telescopic connecting seat (3) at the top. The telescopic connecting seat (3) is movably inserted with a telescopic connecting column (4). The top of the telescopic connecting column (4) is connected with a top fixing plate (5). The bottom of the telescopic connecting seat (3) is connected with a bottom fixing plate (11). The surfaces of the telescopic connecting seat (3) and the telescopic connecting column (4) are provided with airbags (10). The two ends of the airbags (10) are respectively connected to the top fixing plate (5) and the bottom fixing plate (11). An oil injection pipe (7) is connected to the top fixed plate (5). An oil injection pump (8) and an oil injection solenoid valve (9) are installed on the oil injection pipe (7). An oil outlet ring (17) is sleeved on the top of the telescopic connecting column (4). The oil outlet ring (17) is connected to the oil injection pipe (7).

2. The air suspension device for a magnetic levitation train according to claim 1, characterized in that, The oil outlet ring (17) is connected to the oil injection pipe (7), and the surface of the oil outlet ring (17) is provided with an oil outlet hole.

3. An air suspension device for a magnetic levitation train according to claim 2, characterized in that, The top fixing plate (5) is welded with a top fixing bracket (6).

4. An air suspension device for a magnetic levitation train according to claim 3, characterized in that, The bottom fixing plate (11) is connected to a drain pipe (12) at the bottom, and the drain pipe (12) is connected to the airbag (10).

5. An air suspension device for a magnetic levitation train according to claim 4, characterized in that, A discharge solenoid valve (13) is installed on the discharge pipe (12).

6. An air suspension device for a magnetic levitation train according to claim 5, characterized in that, The telescopic connecting column (4) has a limiting seat (14) on its outer wall surface, and the limiting seat (14) is located below the oil outlet ring (17).

7. An air suspension device for a magnetic levitation train according to claim 6, characterized in that, The bottom fixing plate (11) is connected to an air injection pipe (15) and an exhaust pipe (16) at the bottom, and the air injection pipe (15) and the exhaust pipe (16) are arranged symmetrically.

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