Nonlinear air spring

Abstract

The utility model belongs to the technical field of air springs, and particularly relates to a nonlinear air spring which comprises a bottom plate and a top plate, a first positioning ring is fixedly arranged in the middle of the upper side wall of the bottom plate, and a second positioning ring corresponding to the first positioning ring is fixedly arranged in the middle of the lower side wall of the top plate. The inner side wall of the first positioning ring is fixedly connected with a vertically upward inner leather bag. The air spring has the advantages that the outer leather bag is arranged on the outer side of the inner leather bag, cooling water is injected between the outer leather bag and the inner leather bag, the inner leather bag is filled with air, when the air spring works, the air in the inner leather bag is repeatedly compressed, heat generated by air compression is absorbed by the cooling water on the outer side of the inner leather bag, and therefore the air spring can be cooled. A certain protection effect is achieved on the inner leather bag, and the service life of the air spring is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of air springs, in particular to a nonlinear air spring. Background Art

[0002] Air spring is a suspension device used for secondary shock absorption of rail vehicles. It is installed between the car body and the bogie. Its main function is to bear the load of the car body, adapt to the displacement of the car body and the bogie in multiple directions, buffer and absorb vertical and lateral vibrations, ensure smooth operation of the vehicle and comfortable riding for passengers.

[0003] As the air spring undergoes continuous elastic deformation when the vehicle is driving, the gas in the air spring will be repeatedly compressed, which will easily generate heat. The generated heat will be directly transferred to the bladder of the air spring. Long-term repeated heating will reduce the service life of the bladder.

[0004] To solve the above problems, we proposed a nonlinear air spring. Utility Model Content

[0005] The utility model aims to solve the problems in the background technology and proposes a nonlinear air spring.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a nonlinear air spring, comprising a bottom plate and a top plate, a positioning ring 1 is fixedly arranged in the middle of the upper side wall of the bottom plate, a positioning ring 2 corresponding to the positioning ring 1 is fixedly arranged in the middle of the lower side wall of the top plate, the inner side wall of the positioning ring 1 is fixedly connected with an inner skin bag vertically upward, the upper end of the inner skin bag is fixedly connected with the inner side wall of the positioning ring 2, the outer side wall of the positioning ring 1 is fixedly connected with an outer skin bag vertically upward, the upper end of the outer skin bag is fixedly connected with the outer side wall of the positioning ring 2, the outer wall of the outer skin bag is opened with a through hole 1 and a through hole 2, the through hole 1 is located on the upper side of the through hole 2, the through hole 1 and the through hole 2 are respectively close to the upper end and the lower end of the outer skin bag, the through hole 1 is provided with a water inlet structure, and the through hole 2 is provided with a water outlet structure.

[0007] In the above-mentioned nonlinear air spring, the water inlet structure includes a connecting pad 1 fixedly connected to the inner wall of the outer skin bladder, the connecting pad 1 is provided with a water inlet corresponding to the through hole 1, and the outer wall of the connecting pad 1 is fixedly connected with a water inlet pipe inserted in the through hole 1, and the water outlet structure includes a connecting pad 2 fixedly connected to the inner wall of the outer skin bladder, the connecting pad 2 is provided with a water outlet corresponding to the through hole 2, and the outer wall of the connecting pad 2 is fixedly connected with a water outlet pipe inserted in the through hole 2.

[0008] In the above-mentioned nonlinear air spring, the ends of the water inlet pipe and the water outlet pipe are both provided with threads, and the ends of the water inlet pipe and the water outlet pipe are both sleeved with threaded caps located outside the outer bladder.

[0009] In the above-mentioned nonlinear air spring, an air port is opened in the middle of the top plate, a connecting pipe connected to the air port is fixedly provided on the upper side wall of the top plate, an air pipe is connected to the end of the connecting pipe, and a sealing cover is provided at the end of the air pipe.

[0010] In the above-mentioned nonlinear air spring, connecting plates are fixedly provided on the outer sides of the top plate and the bottom plate, and a plurality of positioning holes are formed on the connecting plates.

[0011] In the above-mentioned nonlinear air spring, the outer walls of the upper and lower ends of the outer skin bag are fixedly sleeved with pressure rings.

[0012] Compared with the existing technology, the advantages of this nonlinear air spring are:

[0013] The utility model provides an outer bladder on the outside of the inner bladder, cooling water is injected between the outer bladder and the inner bladder, and the inner bladder is filled with air. When the air spring is working, the air in the inner bladder is repeatedly compressed, and the heat generated by the air compression will be absorbed by the cooling water on the outside of the inner bladder, which plays a certain protective role on the inner bladder and is beneficial to increasing the service life of the air spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A partial structural cutaway diagram of a nonlinear air spring proposed by the utility model;

[0015] Figure 2 for Figure 1 A magnified view of part A;

[0016] Figure 3 This is an appearance diagram of a nonlinear air spring proposed by the utility model.

[0017] In the figure: 1 bottom plate, 2 top plate, 3 positioning ring 1, 4 inner skin bag, 5 outer skin bag, 6 through hole 1, 7 through hole 2, 8 connecting pad 1, 9 water inlet, 10 water inlet pipe, 11 connecting pad 2, 12 water outlet, 13 water outlet pipe, 14 threaded cap, 15 air port, 16 connecting pipe, 17 air pipe, 18 sealing cover 1, 19 connecting plate, 20 positioning hole, 21 pressure ring. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Reference Figure 1-Figure 3 A nonlinear air spring comprises a bottom plate 1 and a top plate 2, the bottom plate 1 and the top plate 2 are vertically opposite to each other, a positioning ring 1 3 is fixedly arranged in the middle of the upper side wall of the bottom plate 1, a positioning ring 2 corresponding to the positioning ring 1 3 is fixedly arranged in the middle of the lower side wall of the top plate 2, an inner skin bag 4 vertically upward is fixedly connected to the inner side wall of the positioning ring 1 3, the upper end of the inner skin bag 4 is fixedly connected to the inner side wall of the positioning ring 2, the upper and lower ends of the inner skin bag 4 are both sealed with the inner side wall of the positioning ring 1 3, and the outer side wall of the positioning ring 1 3 is fixedly connected to the inner side wall of the positioning ring 1 3. The outer skin bag 5 has an upper end fixedly connected to the outer side wall of the positioning ring 2, and the upper and lower ends of the outer skin bag 5 are sealed with the outer side wall of the positioning ring 1 3. The outer walls of the upper and lower ends of the outer skin bag 5 are fixedly sleeved with a pressure ring 21, and the pressure ring 21 squeezes the upper and lower ends of the outer skin bag 5 onto the positioning ring 1 3 to improve the connection strength of the outer skin bag 5. The outer wall of the outer skin bag 5 is provided with a through hole 1 6 and a through hole 2 7. The through hole 1 6 is located on the upper side of the through hole 2 7, and the through hole 1 6 and the through hole 2 7 are respectively close to the upper and lower ends of the outer skin bag 5.

[0020] A water inlet structure is provided on the through hole 16, and a water outlet structure is provided on the through hole 27. Cooling water can be injected into the area between the outer skin bladder 5 and the inner skin bladder 4 through the water inlet structure. The water inlet structure includes a connection pad 18 fixedly connected to the inner wall of the outer skin bladder 5, the connection pad 18 corresponds to the through hole 16, and a water inlet 9 corresponding to the through hole 16 is provided on the connection pad 18. The outer wall of the connection pad 18 is fixedly connected to a water inlet pipe 10 inserted in the through hole 16. The water outlet structure includes a connection pad 211 fixedly connected to the inner wall of the outer skin bladder 5, the connection pad 211 corresponds to the through hole 27, and a water outlet 12 corresponding to the through hole 27 is provided on the connection pad 211. The outer wall of the connection pad 211 is fixedly connected to the inner wall of the outer skin bladder 5. A water outlet pipe 13 is fixedly connected and inserted into the through hole 27. The ends of the water inlet pipe 10 and the water outlet pipe 13 are both provided with threads. The ends of the water inlet pipe 10 and the water outlet pipe 13 are both provided with threaded caps 14 located on the outside of the outer skin bag 5. The threaded cap 14 on the water inlet pipe 10 is opened, and cooling water is injected into the interior of the outer skin bag 5 through the water inlet pipe 10. The outer wall of the outer skin bag 5 is fixedly connected with a vertical upward air guide pipe (not shown in the figure), and a sealing cover 2 is provided on the guide pipe. At this time, the sealing cover 2 must be removed to facilitate the outward exhaust during water injection, so that the cooling water can be smoothly injected between the outer skin bag 5 and the inner skin bag 4, and then the threaded cap 14 and the sealing cover 2 are installed to make the outer skin bag 5 and the inner skin bag 4 airtight.

[0021] An air port 15 is provided in the middle of the top plate 2, and a connecting pipe 16 connected to the air port 15 is fixedly provided on the upper side wall of the top plate 2. An air pipe 17 is connected to the end of the connecting pipe 16, and a sealing cover 18 is provided at the end of the air pipe 17. A connecting plate 19 is fixedly provided on the outer side of the top plate 2 and the bottom plate 1, and a plurality of positioning holes 20 are provided on the connecting plate 19. The connecting plate 19 is used to fix the nonlinear air spring between the car body and the bogie, and external air is introduced into the connecting pipe 16 through the air pipe 17, so that the gas is filled into the inner skin bag 4 through the air port 15, and then the sealing cover 18 is tightened to make the space in the inner skin bag 4 airtight. When the air spring is working, the air in the inner skin bag 4 will be repeatedly compressed, and the air compression will generate heat. At this time, the cooling water can effectively absorb the heat, play a certain protective role on the inner skin bag 4, which is beneficial to improving the service life of the air spring.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A nonlinear air spring, comprising a bottom plate (1) and a top plate (2), characterized in that: A positioning ring 1 (3) is fixedly provided in the middle of the upper side wall of the bottom plate (1), and a positioning ring 2 corresponding to the positioning ring 1 (3) is fixedly provided in the middle of the lower side wall of the top plate (2). The inner side wall of the positioning ring 1 (3) is fixedly connected with an inner skin bag (4) extending vertically upwards, and the upper end of the inner skin bag (4) is fixedly connected to the inner side wall of the positioning ring 2. The outer side wall of the positioning ring 1 (3) is fixedly connected with an outer skin bag (5) extending vertically upwards, and the upper end of the outer skin bag (5) is fixedly connected to the outer side wall of the positioning ring 2. A through hole 1 (6) and a through hole 2 (7) are provided on the outer wall of the outer skin bag (5), and the through hole 1 (6) is located on the upper side of the through hole 2 (7). The through hole 1 (6) and the through hole 2 (7) are respectively close to the upper end and the lower end of the outer skin bag (5). A water inlet structure is provided on the through hole 1 (6), and a water outlet structure is provided on the through hole 2 (7).

2. A nonlinear air spring according to claim 1, characterized in that: The water inlet structure comprises a connection pad 1 (8) fixedly connected to the inner wall of the outer skin bag (5), the connection pad 1 (8) is provided with a water inlet (9) corresponding to the through hole 1 (6), and the outer wall of the connection pad 1 (8) is fixedly connected to a water inlet pipe (10) inserted in the through hole 1 (6); the water outlet structure comprises a connection pad 2 (11) fixedly connected to the inner wall of the outer skin bag (5), the connection pad 2 (11) is provided with a water outlet (12) corresponding to the through hole 2 (7), and the outer wall of the connection pad 2 (11) is fixedly connected to a water outlet pipe (13) inserted in the through hole 2 (7).

3. A nonlinear air spring according to claim 2, characterized in that: The ends of the water inlet pipe (10) and the water outlet pipe (13) are both provided with threads, and the ends of the water inlet pipe (10) and the water outlet pipe (13) are both sleeved with threaded caps (14) located outside the outer skin bag (5).

4. A nonlinear air spring according to claim 1, characterized in that: An air port (15) is provided in the middle of the top plate (2), a connecting pipe (16) in communication with the air port (15) is fixedly provided on the upper side wall of the top plate (2), an end of the connecting pipe (16) is connected to an air pipe (17), and a sealing cover (18) is provided at the end of the air pipe (17).

5. The nonlinear air spring according to claim 1, characterized in that: A connecting plate (19) is fixedly provided on the outer sides of the top plate (2) and the bottom plate (1), and a plurality of positioning holes (20) are provided on the connecting plate (19).

6. A nonlinear air spring according to claim 1, characterized in that: The outer walls of the upper and lower ends of the outer skin bag (5) are both fixedly sleeved with pressure rings (21).

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