Air spring system and vehicle

Abstract

The utility model provides an air spring system and a vehicle, relates to the technical field of vehicles, and aims to solve the technical problems of poor vehicle comfort and poor stability caused by high vertical rigidity and low transverse rigidity of an air spring in the related art. The air spring system comprises an air spring body, a hollow stud and an elastic bushing; the hollow stud is arranged in the air spring body, the hollow stud is provided with a first end and a second end, the first end is located in the second part, and the second end extends towards the first part and extends out of the air spring body from the first part; the hollow stud is provided with a gas channel, and the first end and the second end are both communicated with the gas channel; the elastic bushing is fixedly arranged in the air spring body, and the hollow stud is sleeved with the elastic bushing; and when the first part and the second part generate transverse relative displacement, the hollow stud applies force to the elastic bushing, and the elastic bushing deforms. The transverse rigidity and the vertical rigidity of the air spring body are optimized, and the comfort and the stability of a vehicle are improved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to an air spring system and a vehicle. Background Technology

[0002] An air spring is a spring that uses compressed air to achieve its elastic effect by filling a sealed container with compressed air. An air spring consists of a first part and a second part connected in the vertical direction. The first part is connected to the vehicle body, and the second part is connected to the vehicle bogie. The air spring has the functions of support, vibration isolation, and height adjustment. It is used to adjust the relative displacement of the vehicle body and the bogie in the lateral and vertical directions, thereby improving the stability of the vehicle.

[0003] In related technologies, air springs have relatively low lateral stiffness. When a vehicle is cornering or subjected to large lateral forces, the displacement of the vehicle body relative to the bogie is large. The first and second parts of the air spring are prone to lateral relative displacement, and the displacement is large. In other words, the air spring is not capable enough to limit the relative displacement between the vehicle body and the bogie, resulting in a large offset between the vehicle body and the bogie, causing the vehicle to sway significantly, which leads to poor vehicle stability and comfort.

[0004] At the same time, the vertical stiffness of air springs is relatively large. When the vehicle is bumpy or subjected to large vertical forces, the vertical deformation of the air springs is small, which cannot effectively counteract the vertical force. This results in poor vertical damping performance and poor vehicle stability and comfort. Utility Model Content

[0005] In view of the above problems, this application provides an air spring system and vehicle to solve the problem of poor vehicle comfort and stability caused by the excessive vertical stiffness and insufficient lateral stiffness of air springs in the related art.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0007] This application provides an air spring system comprising: an air spring body, a hollow stud, and an elastic bushing; the air spring body includes a first portion and a second portion connected vertically, the first portion being configured to connect to the vehicle body, and the second portion being configured to connect to the vehicle bogie; the hollow stud has a first end and a second end opposite to each other along the vertical direction, the first end being located within the second portion, and the second end extending toward the first portion and protruding from the air spring body; the hollow stud has a gas channel, and both the first end and the second end are in communication with the gas channel; the elastic bushing is fixedly disposed within the air spring body, and the elastic bushing is sleeved on the outer periphery of the first end; when the vehicle body and the bogie undergo lateral relative displacement, the hollow stud applies a force to the elastic bushing, causing the elastic bushing to elastically deform.

[0008] In one embodiment of this application, the air spring system further includes: an air chamber; the first part includes a cover plate, the cover plate being away from the second part, the cover plate having a first through hole, and the second end extending out of the air spring body from the first through hole; the air chamber is disposed on the cover plate, the air chamber having a first connecting hole, the second end being connected to the first connecting hole to communicate with the gas channel; the air chamber has an air outlet.

[0009] In one embodiment of this application, the air spring system further includes: a wear-resistant ring; the wear-resistant ring is sleeved on the outer periphery of the hollow stud, and the wear-resistant ring is disposed between the inner peripheral wall of the elastic bushing and the outer peripheral wall of the hollow stud.

[0010] In one embodiment of this application, the wear-resistant ring is clearance-fitted with the outer circumference of the hollow stud.

[0011] In one embodiment of this application, the elastic bushing is provided with a plurality of second through holes with different diameters, and the central axis of the second through hole is parallel to the vertical direction.

[0012] In one embodiment of this application, the outer peripheral wall of the wear-resistant ring is provided with a first annular groove, and the elastic bushing is sleeved on the outer periphery of the wear-resistant ring, with a portion of the elastic bushing embedded in the first annular groove.

[0013] In one embodiment of this application, the elastic bushing includes: a first elastic bushing, a second elastic bushing, and a retaining ring; the first elastic bushing is sleeved on the outer periphery of the wear-resistant ring, the retaining ring is sleeved on the outer periphery of the first elastic bushing, and the second elastic bushing is sleeved on the outer periphery of the retaining ring.

[0014] In one embodiment of this application, the air spring system further includes: a fixed seat; the second part includes a base plate, and in the vertical direction, the base plate and the cover plate are opposite each other; the fixed seat is disposed in the air spring body, and one end of the fixed seat is fixedly connected to the base plate, the other end of the fixed seat extends into the first part, and the other end of the fixed seat has a third through hole; the outer peripheral wall of the elastic bushing fits against the inner peripheral wall of the third through hole.

[0015] In one embodiment of this application, the inner peripheral wall of the third through hole is provided with a first limiting flange and a second limiting flange spaced apart along the vertical direction, and the elastic bushing is located between the first limiting flange and the second limiting flange.

[0016] In one embodiment of this application, the air spring system further includes: a plug and at least one sealing ring; the plug is disposed in the first connecting hole, the outer peripheral wall of the plug has at least one second annular groove, and the at least one sealing ring is disposed in the corresponding at least one second annular groove.

[0017] In one embodiment of this application, the plug has an internal threaded hole, the central axis of which is parallel to the vertical direction; the second end has an external threaded connecting section, which is connected to the internal threaded hole.

[0018] In one embodiment of this application, the air spring system further includes: a fixing pad and at least one bolt; the air chamber (200) includes a bottom surface, the fixing pad is disposed between the bottom surface and the cover plate, the center of the fixing pad is provided with a second connecting hole, the central axis of the second connecting hole and the first connecting hole coincides, and the second end is connected to both the second connecting hole and the first connecting hole; the fixing pad is also provided with at least one third connecting hole, the bottom surface is provided with at least one fourth connecting hole, and the bolt is connected to both the third connecting hole and the fourth connecting hole.

[0019] This application embodiment also provides a vehicle, which includes the air spring system described above, and further includes a vehicle body and a bogie; the air chamber includes a bottom surface and a top surface opposite each other in the vertical direction, the bottom surface is fitted with the cover plate, and the bottom surface is provided with the first connecting hole; the top surface is provided with at least one fifth connecting hole, and the vehicle body is provided with at least one sixth connecting hole, the bolt is connected to the third connecting hole, the fourth connecting hole, the fifth connecting hole and the sixth connecting hole, so that the first part is connected to the vehicle body; the bottom plate of the second part is connected to the bogie.

[0020] The air spring system provided in this application has the following technical advantages:

[0021] A hollow stud is added to the air spring body. One end of the hollow stud is located in the first part of the air spring body, and the other end of the hollow stud is located in the second part of the air spring body. This restricts the lateral relative displacement between the first and second parts of the air spring body and enhances the lateral stiffness of the air spring body.

[0022] Meanwhile, an elastic bushing is installed inside the air spring body, and the hollow stud passes through the elastic bushing. When the vehicle is cornering or subjected to lateral force, the two ends of the hollow stud undergo lateral relative displacement. The hollow stud applies the lateral force to the elastic bushing, causing the elastic bushing to deform, thereby offsetting the lateral force and effectively improving the lateral stability of the hollow stud, thus enhancing the lateral comfort and stability of the vehicle.

[0023] Furthermore, the hollow stud has a gas channel, which allows the air spring body to communicate with the external environment, and the gas inside the air spring body can be discharged into the external environment; thereby realizing the adjustment of the internal pressure of the air spring body, optimizing the vertical stiffness of the air spring body, and improving the vertical comfort and stability of the vehicle. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional structural diagram of the air spring system provided in the embodiments of this application;

[0026] Figure 2 Exploded view of the air spring system provided in the embodiments of this application;

[0027] Figure 3 This is a front view of the air spring system provided in the embodiments of this application;

[0028] Figure 4 for Figure 3 Sectional view in the middle AA direction Figure 1 ;

[0029] Figure 5 Schematic diagram of the structure of the elastic bushing provided in the embodiments of this application Figure 1 ;

[0030] Figure 6 for Figure 3 Sectional view in the middle AA direction Figure 2 ;

[0031] Figure 7Schematic diagram of the structure of the elastic bushing provided in the embodiments of this application Figure 2 ;

[0032] Figure 8 A schematic diagram of the connection between the air spring system and the bogie provided in the embodiments of this application. Figure 1 ;

[0033] Figure 9 A schematic diagram of the connection between the air spring system and the bogie provided in the embodiments of this application. Figure 2 .

[0034] Figure label:

[0035] 100-Air spring body;

[0036] 101 - Part 1; 102 - Part 2; 110 - Axle; 120 - Cantilever; 130 - Vertical damper;

[0037] 1011 - Cover plate; 1021 - Base plate;

[0038] 200-air chamber;

[0039] 201 - Air outlet; 202 - Air tube; 203 - Protrusion; 204 - Fifth connecting hole;

[0040] 300-Hollow Stud;

[0041] 301 - External threaded connection section;

[0042] 401 - First elastic bushing; 402 - Second elastic bushing; 403 - Retaining ring; 404 - Third elastic bushing;

[0043] 4041 - Second through hole;

[0044] 500-wear-resistant ring;

[0045] 501 - First wear-resistant ring; 502 - Second wear-resistant ring;

[0046] 600-Fixed base;

[0047] 601 - First limiting flange; 602 - Second limiting flange;

[0048] 700 - Plug;

[0049] 800 - Sealing ring;

[0050] 900 - Fixed pad;

[0051] 901 - First bolt; 902 - Second connecting hole; 903 - Second bolt. Detailed Implementation

[0052] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0053] In this embodiment of the application, the direction of vehicle movement is defined as the front-back direction, which is the y-axis shown in the figure; the horizontal direction perpendicular to the direction of vehicle movement is defined as the left-right direction, which is the x-axis shown in the figure; the front-back direction and the left-right direction are both horizontal, and the direction perpendicular to the above-mentioned horizontal direction is the vertical direction, which is the z-axis shown in the figure.

[0054] During vehicle operation, air springs have lateral stiffness and vertical stiffness. Lateral stiffness refers to the relative displacement that the first and second parts of the air spring can undergo in the lateral direction, while vertical stiffness refers to the degree of elastic deformation of the air spring in the vertical direction, which is determined by the internal pressure of the air spring.

[0055] refer to Figures 1-4 The air spring system provided in this application embodiment includes: an air spring body 100, a hollow stud 300, and an elastic bushing.

[0056] The air spring body 100 includes a first part 101 and a second part 102 connected in a vertical direction (z-axis shown in the figure), and the first part 101 and the second part 102 are connected to each other; the first part 101 is connected to the vehicle body, and the second part 102 is connected to the vehicle bogie; when the vehicle body and the bogie have relative displacement in the lateral and vertical directions, the first part 101 and the second part 102 can limit the amount of relative displacement between the vehicle body and the bogie.

[0057] A hollow stud 300 is disposed inside the air spring body 100. The hollow stud 300 has a first end and a second end in the vertical direction (z-axis shown in the figure). The first end is located inside the second part 102, and the second end extends toward the first part 101. The first part 101 includes a cover plate 1011, on which a first through hole is provided. The second end extends out of the first part 101 of the air spring body 100 from the first through hole.

[0058] The hollow stud 300 has a gas channel, with both the first end and the second end connected to the gas channel. The first end is connected to the cavity of the air spring body 100, and the second end is connected to the external environment. The gas in the air spring body 100 enters the gas channel through the first end and is discharged into the external environment from the second end.

[0059] The elastic bushing is fixedly installed inside the air spring body 100 and is sleeved on the outer periphery of the hollow stud 300. When the first part 101 and the second part 102 undergo lateral (x-axis or y-axis as shown in the figure) relative displacement, the hollow stud 300 applies a force to the elastic bushing, and the elastic bushing undergoes elastic deformation.

[0060] The air spring system of this application embodiment will be described in detail below in conjunction with the vehicle's operating status.

[0061] When the vehicle experiences bumps or vertical forces:

[0062] The car body and bogie are displaced vertically, causing the air spring body 100 to be compressed vertically; the gas in the air spring body 100 is compressed into the gas channel of the hollow stud 300 and discharged into the external environment from the second end.

[0063] As some of the gas in the air spring body 100 is discharged, the internal pressure of the air spring body 100 decreases, and the air spring body 100 undergoes effective deformation in the vertical direction, thereby limiting the relative displacement between the vehicle body and the bogie in the vertical direction and improving the vertical comfort of the vehicle.

[0064] When a vehicle is cornering or subjected to lateral forces:

[0065] The car body and bogie generate relative displacement in the lateral direction. The car body and bogie respectively drive the first part 101 and the second part 102 of the air spring body 100 to generate relative lateral displacement. However, since the first end of the hollow stud 300 is located in the second part 102 and the second end of the hollow stud 300 is located in the first part 101, the hollow stud 300 can limit the relative displacement between the first part 101 and the second part 102, thereby enhancing the lateral stiffness of the air spring body 100. This allows the air spring body 100 to limit the relative displacement between the car body and the bogie, resulting in a smaller offset between the car body and the bogie, preventing the vehicle from swaying significantly, and improving the vehicle's stability and comfort.

[0066] Simultaneously, when the first part 101 and the second part 102 of the air spring body 100 undergo lateral relative displacement, the first end and the second end of the hollow stud 300 also undergo lateral relative displacement. The hollow stud 300 applies a lateral force to the elastic bushing, causing the elastic bushing to undergo elastic deformation. The elastic deformation of the elastic bushing can counteract the lateral force applied by the hollow stud 300, thereby improving the lateral stability of the hollow stud 300, improving the lateral damping performance, and further enhancing the vehicle's stability and comfort.

[0067] Continue to refer to Figures 1-4In this embodiment of the application, the air spring system further includes an air chamber 200, which is disposed on the cover plate 1011. The air chamber 200 has a bottom surface that fits against the cover plate 1011 and has a first connecting hole. The second end extending out of the first part 101 is connected to the first connecting hole, so that the gas passage of the hollow stud 300 is connected to the air chamber 200, and the gas in the air spring body 100 can enter the air chamber 200.

[0068] An air outlet 201 is also provided on the side wall of the air chamber 200. An air pipe 202 is connected to the air outlet 201. After the gas in the air spring body 100 enters the air chamber 200, it will be discharged from the air outlet 201 into the air pipe 202, and finally discharged into the external environment from the air pipe 202.

[0069] When the vehicle is bumpy or subjected to vertical force, the vehicle body and bogie are relatively displaced in the vertical direction, causing the air spring body 100 to be compressed in the vertical direction; the gas in the air spring body 100 is compressed into the air chamber 200, discharged from the air outlet 201 into the air pipe 202, and finally discharged into the external environment from the air pipe 202.

[0070] As some of the gas in the air spring body 100 is discharged, the internal pressure of the air spring body 100 decreases, and the air spring body 100 undergoes effective deformation in the vertical direction, thereby limiting the relative displacement between the vehicle body and the bogie in the vertical direction and improving the vertical comfort of the vehicle.

[0071] refer to Figure 4 and Figure 6 In this embodiment of the application, the air spring system further includes a wear-resistant ring 500, which is sleeved on the outer periphery of the hollow stud 300 and disposed between the inner peripheral wall of the elastic bushing and the outer peripheral wall of the hollow stud 300.

[0072] A wear-resistant ring 500 is provided between the inner peripheral wall of the elastic bushing and the outer peripheral wall of the hollow stud 300. When the vehicle is subjected to vertical or lateral forces, excessive friction between the hollow stud 300 and the elastic bushing is avoided, which would lead to severe wear of the elastic bushing.

[0073] In this embodiment, the wear-resistant ring 500 and the hollow stud 300 are fitted with a clearance fit on their outer periphery.

[0074] When the vehicle is subjected to only vertical force and no lateral force, this prevents excessive friction between the hollow stud 300 and the wear ring 500, thus avoiding accelerated wear between them.

[0075] Among them, the wear-resistant ring 500 is made of polytetrafluoroethylene (PTFE), which has excellent chemical stability, corrosion resistance, sealing performance, high lubricity and non-stickiness, electrical insulation and good anti-aging resistance.

[0076] refer to Figure 4 and Figure 5 In this embodiment of the application, the elastic bushing may include: a first elastic bushing 401, a second elastic bushing 402 and a fixing ring 403, and the wear-resistant ring 500 may include the first wear-resistant ring 501; the first wear-resistant ring 501 is sleeved on the outer periphery of the hollow stud 300, the first elastic bushing 401 is sleeved on the outer periphery of the first wear-resistant ring 501, the fixing ring 403 is sleeved on the outer periphery of the first elastic bushing 401, and the second elastic bushing 402 is sleeved on the outer periphery of the fixing ring 403.

[0077] In other words, the elastic bushing includes multiple layers of elastic elements, which can effectively improve the lateral stability of the hollow stud 300, improve lateral vibration damping performance, and further enhance the vehicle's stability and comfort.

[0078] The first elastic bushing 401 and the second elastic bushing 402 are both made of rubber material. A layer of rubber can be vulcanized on the outer ring of the fixing ring 403 to obtain the second elastic bushing 402; and a layer of rubber can be vulcanized on the inner ring of the fixing ring 403 to obtain the first elastic bushing 401; thereby making the first elastic bushing 401, the fixing ring 403 and the second elastic bushing 402 fixedly connected.

[0079] Similarly, a first wear-resistant ring 501 is provided on the inner ring of the first elastic bushing 401 through a vulcanization process, so that the first wear-resistant ring 501, the first elastic bushing 401, the fixing ring 403 and the second elastic bushing 402 are fixedly connected.

[0080] refer to Figure 6 and Figure 7 In this embodiment of the application, the elastic bushing may include a third elastic bushing 404, on which a plurality of second through holes 4041 are provided. The plurality of second through holes 4041 have different diameters, and the central axis of the second through holes 4041 is parallel to the vertical direction (z-axis shown in the figure).

[0081] By providing multiple second through holes 4041 of varying sizes on the third elastic bushing 404, the lateral damping effect of the third elastic bushing 404 is enhanced, thereby improving the lateral stability of the hollow stud 300, improving lateral vibration reduction performance, and further enhancing the vehicle's stability and comfort.

[0082] Continue to refer to Figure 6 In this embodiment of the application, the wear-resistant ring may include a second wear-resistant ring 502, which is sleeved on the outer periphery of the hollow stud 300, and a third elastic bushing 404 is sleeved on the outer periphery of the second wear-resistant ring 502; the outer peripheral wall of the second wear-resistant ring 502 is provided with a first annular groove, and the third elastic bushing 404 is sleeved on the outer periphery of the second wear-resistant ring 502, with a portion of the third elastic bushing 404 embedded in the first annular groove.

[0083] The first annular groove can limit the third elastic bushing 404 in the vertical direction (z-axis shown in the figure) to prevent the third elastic bushing 404 from moving up and down in the vertical direction and detaching from the second wear-resistant ring 502.

[0084] refer to Figure 4 and Figure 6 In this embodiment of the application, the second part 102 of the air spring body 100 includes a base plate 1021, which is opposite to the cover plate 1011 in the vertical direction (z-axis shown in the figure).

[0085] The air spring system also includes a mounting base 600, which is disposed inside the air spring body 100, with one end of the mounting base 600 fixedly connected to the base plate 1021 and the other end of the mounting base 600 extending into the first part 101.

[0086] The two ends of the fixed seat 600 are located in the first part 101 and the second part 102 respectively, so that the fixed seat 600 can also limit the relative displacement between the first part 101 and the second part 102, thereby enhancing the lateral stiffness of the air spring body 100 and improving the stability and comfort of the vehicle.

[0087] The other end of the fixed base 600 also has a third through hole, and the outer peripheral wall of the elastic bushing fits against the inner peripheral wall of the third through hole, so that the elastic bushing is fixedly installed in the air spring body 100.

[0088] The elastic bushing is made of rubber material. A layer of rubber can be vulcanized on the inner circumferential wall of the third through hole through a vulcanization process to obtain the elastic bushing, thereby making the elastic bushing and the fixed seat 600 fixedly connected.

[0089] refer to Figure 4 and Figure 6 In this embodiment of the application, the inner peripheral wall of the third through hole is further provided with a first limiting flange 601 and a second limiting flange 602 spaced along the vertical direction (z-axis shown in the figure), and the elastic bushing is located between the first limiting flange 601 and the second limiting flange 602.

[0090] The first limiting flange 601 and the second limiting flange 602 can limit the elastic bushing in the vertical direction (z-axis shown in the figure) to prevent the elastic bushing from moving upward and ensure that the elastic bushing can counteract the lateral force of the hollow stud 300; and prevent the elastic bushing from moving downward and detaching from the hollow stud 300.

[0091] refer to Figure 2 , Figure 4 and Figure 6In this embodiment of the application, the bottom surface of the air chamber 200 is provided with a protrusion 203 extending toward the interior of the air chamber 200, and a first connecting hole is provided on the protrusion 203.

[0092] The air spring system also includes a plug 700 and at least one sealing ring 800. The plug 700 is disposed in the first connecting hole, and the outer peripheral wall of the plug 700 has at least one second annular groove. The at least one sealing ring 800 is disposed in the corresponding at least one second annular groove.

[0093] The sealing ring 800 can seal the connection between the plug 700 and the first connecting hole.

[0094] The outer peripheral wall of the plug 700 can be provided with two second annular grooves, which are spaced apart in the vertical direction (z-axis shown in the figure), and each of the two second annular grooves is provided with a sealing ring 800.

[0095] refer to Figure 2 , Figure 4 and Figure 6 In this embodiment of the application, the plug 700 has an internal threaded hole, the central axis of which is parallel to the vertical direction (the z-axis shown in the figure); the second end of the hollow stud 300 has an external threaded connecting section 301, which is connected to the internal threaded hole, so that the second end of the hollow stud 300 is connected to the plug 700.

[0096] The plug 700, combined with the external threaded connection section 301 of the hollow stud 300, ensures the sealing of the connection while connecting the hollow stud 300 to the air chamber 200.

[0097] Continue to refer to Figure 2 , Figure 4 and Figure 6 In this embodiment of the application, the air spring system further includes: a fixing pad 900 and at least one first bolt 901; the fixing pad 900 is disposed between the bottom surface of the air chamber 200 and the cover plate 1011, and a second connecting hole 902 is provided at the center of the fixing pad 900, the central axis of the second connecting hole 902 and the first connecting hole coincide, and the second end of the hollow stud 300 passes through the second connecting hole 902 and is connected to the first connecting hole.

[0098] The fixing pad 900 is also provided with at least one third connecting hole, and the bottom surface of the air chamber 200 is provided with at least one fourth connecting hole. The first bolt 901 is connected to both the third connecting hole and the fourth connecting hole, so that the fixing pad 900 is connected to the bottom surface of the air chamber 200.

[0099] The fixed pad 900 facilitates the connection between the air chamber 200 and the air spring body 100, while also improving the connection strength between the air chamber 200 and the air spring body 100 and enhancing the structural stability of the air chamber 200.

[0100] Continue to refer to Figure 2 , Figure 4 and Figure 6 This application also provides a vehicle that includes the air spring system described above, as well as a vehicle body and a bogie.

[0101] The air chamber 200 includes a bottom surface and a top surface that are opposite each other in the vertical direction (z-axis shown in the figure). The bottom surface is attached to the cover plate 1011 and is provided with a first connecting hole. The top surface is provided with at least one fifth connecting hole 204, and the vehicle body is provided with at least one sixth connecting hole. The first bolt 901 is connected to the third connecting hole, the fourth connecting hole, the fifth connecting hole 204 and the sixth connecting hole to connect the air chamber 200 to the vehicle body.

[0102] A seventh connecting hole is provided on the base plate 102 of the second part 102 of the air spring body 100, and an eighth connecting hole is provided on the bogie. The seventh connecting hole and the eighth connecting hole are connected by a second bolt 903, so that the second part 102 of the air spring body 100 is connected to the bogie.

[0103] refer to Figure 8 and Figure 9 The bogie includes four cantilever arms 120, all of which are connected to the axle 110. Each cantilever arm 120 has a first mounting position and a second mounting position at its end. The first mounting position is used to install an air spring system, and the second mounting position is used to install a vertical shock absorber 130.

[0104] In summary, this application provides an air spring system and a vehicle. The air spring system includes an air spring body 100, a hollow stud 300, and an elastic bushing. The air spring body 100 includes a first portion 101 and a second portion 102 connected along a vertical direction (the z-axis shown in the figure). The hollow stud 300 is disposed within the air spring body 100 and has a first end and a second end opposite to each other along a vertical direction (the z-axis shown in the figure). The first end is located within the second portion 102, and the second end extends toward the first portion 101 and extends out of the first portion 102 of the air spring body 100. 01 External; The hollow stud 300 has a gas channel, with both the first end and the second end connected to the gas channel. The first end is connected to the cavity of the air spring body 100, and the second end is connected to the external environment. The gas in the air spring body 100 enters the gas channel through the first end and is discharged into the external environment from the second end. The elastic bushing is fixedly installed inside the air spring body 100 and is sleeved on the outer periphery of the hollow stud 300. When the first part 101 and the second part 102 undergo lateral (x-axis or y-axis as shown in the figure) relative displacement, the hollow stud 300 applies a force to the elastic bushing, and the elastic bushing undergoes elastic deformation.

[0105] A hollow stud 300 is added inside the air spring body 100. One end of the hollow stud 300 is located inside the first part 101 of the air spring body 100, and the other end of the hollow stud 300 is located inside the second part 102 of the air spring body 100. This restricts the lateral relative displacement between the first part 101 and the second part 102 of the air spring body 100 and enhances the lateral stiffness of the air spring body 100.

[0106] Meanwhile, an elastic bushing is provided inside the air spring body 100, and the hollow stud 300 passes through the elastic bushing. When the vehicle is cornering or subjected to lateral force, the two ends of the hollow stud 300 undergo lateral relative displacement. The hollow stud 300 applies the lateral force to the elastic bushing, causing the elastic bushing to deform, thereby offsetting the lateral force and effectively improving the lateral stability of the hollow stud 300, thus enhancing the lateral comfort and stability of the vehicle.

[0107] Furthermore, the hollow stud 300 has a gas channel, which allows the air spring body 100 to communicate with the external environment, and the gas inside the air spring body 100 can be discharged into the external environment; thereby realizing the adjustment of the internal pressure of the air spring body 100, optimizing the vertical stiffness of the air spring body 100, and improving the vertical comfort and stability of the vehicle.

[0108] The various embodiments or embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0109] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0110] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0111] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0112] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An air spring system, characterized by, The air spring system comprises: an air spring body (100), a hollow stud (300) and an elastic sleeve; the air spring body (100) comprises a first part (101) and a second part (102) connected in a vertical direction, the first part (101) is configured to be connected with a vehicle body, and the second part (102) is configured to be connected with a bogie of the vehicle; the hollow stud (300) has a first end and a second end opposite in the vertical direction, the first end is located in the second part (102), and the second end extends to the first part (101) and protrudes out of the air spring body (100) from the first part (101); the hollow stud (300) has a gas passage, and the first end and the second end are both in communication with the gas passage; the elastic sleeve is fixedly arranged in the air spring body (100), and the elastic sleeve is sleeved on the outer periphery of the first end; when the vehicle body and the bogie are relatively displaced in the transverse direction, the hollow stud (300) applies a force to the elastic sleeve, and the elastic sleeve is elastically deformed.

2. The air spring system of claim 1, wherein, The air spring system further comprises a gas chamber (200); the first part (101) comprises a cover plate (1011) away from the second part (102), and the cover plate (1011) is provided with a first through hole, and the second end protrudes out of the air spring body (100) from the first through hole; the gas chamber (200) is arranged on the cover plate (1011), and the gas chamber (200) has a first connecting hole, and the second end is connected with the first connecting hole to enable the gas chamber (200) to communicate with the gas passage; the gas chamber (200) has a gas outlet (201).

3. The air spring system of claim 2, wherein, The air spring system further comprises a wear-resistant ring (500); the wear-resistant ring (500) is sleeved on the outer periphery of the hollow stud (300), and the wear-resistant ring (500) is arranged between the inner peripheral wall of the elastic sleeve and the outer peripheral wall of the hollow stud (300).

4. The air spring system according to claim 3, wherein the wear-resistant ring (500) is in clearance fit with the outer periphery of the hollow stud (300).

5. The air spring system according to claim 3, wherein the elastic sleeve is provided with a plurality of second through holes (4041) with different diameters, and the central axes of the second through holes (4041) are parallel to the vertical direction.

6. The air spring system according to claim 5, wherein the outer peripheral wall of the wear-resistant ring (500) is provided with a first annular groove, and the elastic sleeve is sleeved on the outer periphery of the wear-resistant ring (500) and partially embedded in the first annular groove.

7. The air spring system of claim 3, wherein, the elastic sleeve comprises a first elastic sleeve (401), a second elastic sleeve (402) and a fixing ring (403). The first elastic bushing (401) is sleeved on the outer periphery of the wear-resistant ring (500), the fixed ring (403) is sleeved on the outer periphery of the first elastic bushing (401), and the second elastic bushing (402) is sleeved on the outer periphery of the fixed ring (403).

8. The air spring system of any of claims 2-7, wherein, The air spring system further comprises a fixing seat (600); The second part (102) comprises a bottom plate (1021), and the bottom plate (1021) and the cover plate (1011) are opposite in the vertical direction; The fixing seat (600) is arranged in the air spring body (100), one end of the fixing seat (600) is fixedly connected to the bottom plate (1021), the other end of the fixing seat (600) extends into the first part (101), and the other end of the fixing seat (600) has a third through hole; The outer peripheral wall of the elastic bushing is attached to the inner peripheral wall of the third through hole.

9. The air spring system according to claim 8, wherein, The inner peripheral wall of the third through hole is provided with a first limiting flange (601) and a second limiting flange (602) spaced apart in the vertical direction, and the elastic bushing is located between the first limiting flange (601) and the second limiting flange (602).

10. The air spring system of any of claims 2-7, wherein, The air spring system further comprises a plug (700) and at least one sealing ring (800); The plug (700) is arranged in the first connecting hole, and the outer peripheral wall of the plug (700) has at least one second annular groove, and the at least one sealing ring (800) is arranged in the corresponding at least one second annular groove.

11. The air spring system according to claim 10, wherein, The plug (700) has an internally threaded hole, and the central axis of the internally threaded hole is parallel to the vertical direction; The second end has an externally threaded connecting section (301), and the externally threaded connecting section (301) is connected to the internally threaded hole.

12. The air spring system of any of claims 2-7, wherein, The air spring system further comprises a fixing base plate (900) and at least one first bolt (901); The air chamber (200) comprises a bottom surface, the fixing base plate (900) is arranged between the bottom surface and the cover plate (1011), the center of the fixing base plate (900) is provided with a second connecting hole (902), the central axis of the second connecting hole (902) coincides with that of the first connecting hole, and the second end is connected to the second connecting hole (902) and the first connecting hole; The fixing base plate (900) is further provided with at least one third connecting hole, the bottom surface is provided with at least one fourth connecting hole, and the first bolt (901) is connected to the third connecting hole and the fourth connecting hole.

13. A vehicle characterized by comprising: The air spring system comprises a vehicle body and a bogie. The air chamber (200) of the air spring system comprises a bottom surface and a top surface opposite in the vertical direction, the bottom surface is attached to the cover plate (1011) of the first part (101), and the bottom surface is provided with a first connecting hole; The top surface is provided with at least one fifth connecting hole (204), and the vehicle body is provided with at least one sixth connecting hole; the fifth connecting hole (204), the sixth connecting hole, a third connecting hole on a fixing pad plate (900) of the air spring system and a fourth connecting hole on the bottom surface are connected by a first bolt (901) to connect the first part (101) of the air spring system with the vehicle body. The bottom plate (1021) of the second part (102) of the air spring system is connected with the bogie.

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