CN110469624A - Nonlinear Space gas spring - Google Patents
Nonlinear Space gas spring Download PDFInfo
- Publication number
- CN110469624A CN110469624A CN201910769283.9A CN201910769283A CN110469624A CN 110469624 A CN110469624 A CN 110469624A CN 201910769283 A CN201910769283 A CN 201910769283A CN 110469624 A CN110469624 A CN 110469624A
- Authority
- CN
- China
- Prior art keywords
- metal pad
- rubber metal
- limiting section
- top plate
- pad top
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/20—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper characterised by comprising also a pneumatic spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
- F16F2222/126—Fluid damping using gases
Abstract
The present invention proposes a kind of Nonlinear Space gas spring, including the upper cover plate set gradually, air bag, secondary spring and bottom plate, the secondary spring includes the first rubber metal pad and the second rubber metal pad along the setting of air spring lontitudinal series, first rubber metal pad and the second rubber metal pad inner hollow form chamber, first rubber metal pad is disposed adjacent with the air bag, and first rubber metal pad side adjacent with the air bag is provided with the first rubber metal pad top plate, the first rubber metal pad top plate covers the top of first rubber metal pad and the top of the chamber, the first limiting section that the oriented chamber interior extends is formed on the first rubber metal pad top plate, the second limiting section that the oriented chamber interior extends is formed on the bottom plate, second limiting section and first limiting section be spaceds setting in the horizontal direction and can limit described the The displacement in the horizontal direction of one limiting section, realizes the nonlinear characteristic of performance level analysis, guarantees the lateral stability and comfort of vehicle.
Description
Technical field
The invention belongs to railway vehicle vibration damping technical field more particularly to a kind of Nonlinear Space gas springs.
Background technique
Currently, line air spring is widely used as Vehicle damper equipment, air spring mainly includes upper cover, air bag
And secondary spring, in the deflated condition, air bag plays main damping effect；When air spring is without gas, secondary spring rises main
Damping effect, and air bag no longer works.When secondary spring is compressed, the relationship of load index approximate with displacement presentation,
For full curve, i.e. rigidity increases with load and is gradually increased.But the defect of line air spring is as follows:
1) air spring loses under gaseity, undertakes vertical displacement by secondary spring, there may be biggish vertical when overloaded
Displacement, causes secondary spring to fail, and car body sinks to damaging other component；
2) under air spring inflated condition and when maximum horizontal displacement, horizontal change is undertaken by air bag and secondary spring together
Position will lead to air spring failure if horizontal displacement exceeds the horizontal displacement ability of air spring.
In the actual application of air spring, it is generally desirable to the rigidity of secondary spring under low load is smaller, under heavy duty
The rigidity of secondary spring is larger, and the rigidity of secondary spring has a process for mutation, i.e., nonlinear characteristic can reduce weight in this way
The amount of deflection of secondary spring is poor when carrying and is unloaded, the comfort of vehicle when can also increase low load.Currently, there is no a kind of air
Spring has the nonlinear characteristic of performance level analysis.
Summary of the invention
The present invention in view of the above technical problems, proposes a kind of air spring with performance level analysis nonlinear characteristic.
In order to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of Nonlinear Space gas spring, including upper cover plate, air bag, secondary spring and the bottom plate set gradually, the auxiliary
Spring includes the first rubber metal pad and the second rubber metal pad along the setting of air spring lontitudinal series, first rubber metal pad and described the
Two rubber metal pad inner hollows form chamber, and first rubber metal pad is disposed adjacent with the air bag, and first rubber metal pad
The side adjacent with the air bag is provided with the first rubber metal pad top plate, and the first rubber metal pad top plate covers first rubber metal pad
Top and the chamber top, the first limit that the oriented chamber interior extends is formed on the first rubber metal pad top plate
Position portion forms the second limiting section that the oriented chamber interior extends, second limiting section and described first on the bottom plate
Limiting section is spaced in the horizontal direction to be arranged and can limit the first limiting section displacement in the horizontal direction.
Preferably, second limiting section be formed as to first limiting section be open enclosing structure, described first
Limiting section is inserted in the enclosing structure to limit first limiting section in each horizontal direction relative to second limit
The displacement in portion.
Preferably, the top of second rubber metal pad is provided with the second rubber metal pad top plate, the second rubber metal pad top plate
It covers second rubber metal pad top but does not cover the chamber, the periphery of the second rubber metal pad top plate forms oriented described
The third limiting section that one rubber metal pad top plate extends, the third limiting section are spaced in the horizontal direction with the first rubber metal pad top plate
It is arranged and the first rubber metal pad top plate displacement in the horizontal direction can be limited.
Preferably, it is by described that second limiting section, which limits first limiting section displacement in the horizontal direction,
What the rigid contact of one limiting section and second limiting section was realized；The third limiting section limits the first rubber metal pad top plate
Displacement in the horizontal direction is realized by the rigid contact of the third limiting section and the first rubber metal pad top plate.
Preferably, the air bag is connect with the third limiting section, the first rubber metal pad top plate is in the unloaded state
For free end.
Preferably, vertical limit table top is formed at the top of the third limiting section, the vertical limit table top and sky
The first rubber metal pad top plate under load state is arranged at vertical upper interval and can limit the first rubber metal pad top plate vertical
Displacement.
Compared with prior art, the present invention has at least the following advantages and good effect:
1, Nonlinear Space gas spring provided by the present invention realizes the non-thread of performance level analysis by the way that limiting section is arranged
Property characteristic, with the increase of load and deformation, there is the inflection point of mutation in horizontal rigidity, guarantee the lateral stability of vehicle and comfortable
Property.
2, Nonlinear Space gas spring provided by the present invention, while there is horizontal and vertical third-order nonlinearity rigidity, drop
The amount of deflection of low no-load and the lower secondary spring of heavy duty is poor, comfort when can effectively increase low load and stabilization when improving top load
Property；It is lost the moment of gas in air spring, the classification of secondary spring vertical stiffness increases, and provides good buffering effect.
3, Nonlinear Space inside of air spring provided by the present invention is provided with position limiting structure, can in Car design manufacture
Rubber nodal point of the part positioned at car body and bogie between is saved, vehicle is reduced and newly makes design difficulty, new makes and repair and maintenance
Cost improves production efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram under the Nonlinear Space gas spring light condition that the present invention is implemented；
Fig. 2 is the schematic diagram of the Nonlinear Space gas spring horizontal displacement second stage of the embodiment of the present invention；
Fig. 3 is the schematic diagram of the Nonlinear Space gas spring horizontal displacement phase III of the embodiment of the present invention；
Fig. 4 is the schematic diagram of the Nonlinear Space gas spring vertical displacement first stage of the embodiment of the present invention；
Fig. 5 is the schematic diagram of the vertical displacement second stage of Nonlinear Space gas spring of the embodiment of the present invention；
Fig. 6 is the schematic diagram of the Nonlinear Space gas spring vertical displacement phase III of the embodiment of the present invention；
In above each figure: 1, upper cover plate；2, air bag；3, secondary spring；31, the first rubber metal pad；32, the second rubber metal pad；4,
Bottom plate；41, the second limiting section；5, chamber；6, the first rubber metal pad top plate；61, the first limiting section；7, the second rubber metal pad top plate；71,
Third limiting section；72, vertical limit table top.
Specific embodiment
In the following, the present invention is specifically described by illustrative embodiment.It should be appreciated, however, that not into one
In the case where step narration, element, structure and features in an embodiment can also be advantageously incorporated into other embodiments
In.
In the description of the present invention, it should be understood that (1) term "inner", "outside", "upper", "lower", "front", "rear" etc.
The orientation or positional relationship of instruction is positional relationship based on the figure, is merely for convenience of the description present invention and simplification is retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.(2) term " first ", " second ", " third " are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance.
As shown in Figure 1, the embodiment of the present invention provides a kind of Nonlinear Space gas spring, including upper cover plate 1, the gas set gradually
Capsule 2, secondary spring 3 and bottom plate 4, the secondary spring 3 include 31 He of the first rubber metal pad along the setting of air spring lontitudinal series
Second rubber metal pad 32, first rubber metal pad 31 and 32 inner hollow of the second rubber metal pad form chamber 5, first rubber
Heap 31 is disposed adjacent with the air bag 2, and first rubber metal pad 31 side adjacent with the air bag 2 is provided with the first rubber
Glue heap top plate 6, the first rubber metal pad top plate 6 covers the top of 31 top of the first rubber metal pad and the chamber 5, described
The first limiting section 61 of oriented 5 internal stretch of the chamber is formed on first rubber metal pad top plate 6, is formed on the bottom plate 4 oriented
The second limiting section 41 that the chamber interior extends, second limiting section 41 and first limiting section 61 in the horizontal direction between
Every setting and first limiting section 61 displacement in the horizontal direction can be limited.
In the above-described embodiments, it should be noted that " limitation first limiting section 61 position in the horizontal direction
Move ", not the first limiting section 61 is not displaced in the horizontal direction, and limiting displacement is for the second limiting section 41；When
When generating horizontal displacement, bottom plate 4 can generate corresponding horizontal displacement first and underlying second rubber metal pad 32 can first
Deformation is generated, and the first rubber metal pad 31 and the first rubber metal pad top plate 6 above being now placed in keep in situ also under effect of inertia,
When bottom plate 4 shifts so that will drive the first limiting section 61 and the first rubber after the second limiting section 41 and the contact of the first limiting section 61
Heap top plate 6 is displaced together, limits horizontal displacement of first limiting section 61 relative to the second limiting section 41 at this time.
Nonlinear Space gas spring provided by above-described embodiment, by the way that the first limiting section 61 and the second limiting section 41 is arranged,
The nonlinear characteristic of performance level analysis can be achieved.Secondary spring 3 is only by underlying second rubber metal pad 32 under low load
Horizontal displacement is undertaken, rigidity is smaller；When the load is increasing, horizontal displacement increases, and the first limiting section 61 connects with the second limiting section 41
Touching, so that the first rubber metal pad 31 and the second rubber metal pad 32 undertake horizontal displacement simultaneously, rigidity increases.It is achieved under low load
Rigidity is smaller, the biggish horizontal nonlinearity characteristic of rigidity under heavy load, improves the riding comfort in steady section, guarantees vehicle tool
There are enough recuperabilities, improves stability when vehicle passes through curve section.
As a kind of preferred embodiment of the second limiting unit 41, as shown in Figure 1, second limiting section 41 is formed as
The enclosing structure being open to first limiting section 61, first limiting section 61 are inserted in the enclosing structure to limit
State displacement of first limiting section 61 in each horizontal direction relative to second limiting section 41.The enclosing structure can be hollow
Cylindrical body, hollow cuboid or other enclosing structures, as long as the limit in each horizontal direction to the first limiting section 61 may be implemented
.
Further, as a preferred embodiment, as shown in Figure 1, the top of second rubber metal pad 32 is arranged
There is the second rubber metal pad top plate 7, the second rubber metal pad top plate 7 covers 32 top of the second rubber metal pad but do not cover the chamber
5, the periphery of the second rubber metal pad top plate 7 forms the third limiting section 71 that the oriented first rubber metal pad top plate 6 extends, described
Third limiting section 71 and the first rubber metal pad top plate 6 are spaced in the horizontal direction to be arranged and can limit first rubber metal pad top
The displacement in the horizontal direction of plate 6.
In the above-described embodiments, limiting displacement is the level for limiting the first rubber metal pad top plate 6 relative to third limiting section 71
Displacement.Being cooperated by setting third limiting section 71 and the first rubber metal pad top plate 6 can be achieved the two of air spring performance level analysis
Secondary variation.With the increase of load, the first limiting section 61 first contacted with the second limiting section 41 so that secondary spring 3 rigidity by
The rigidity of second rubber metal pad 32 is increased to the rigidity after 32 parallel connection of the first rubber metal pad 31 and the second rubber metal pad；Subsequent load is further
Increase, so that the first rubber metal pad top plate 6 is contacted with third limiting section 71, the deformation of 3 horizontal direction of secondary spring is limited, so that
The lateral stiffness of air spring further increases, and the car body recuperability provided increases, and is conducive to further limit car body generation cross
To movement, guarantee the lateral stability of vehicle.
Further, it is to pass through institute that second limiting section 41, which limits first limiting section 61 displacement in the horizontal direction,
State the first limiting section 61 and the rigid contact realization of second limiting section 41；The third limiting section 71 limits described first
The displacement in the horizontal direction of rubber metal pad top plate 6 is the rigidity by the third limiting section 71 and the first rubber metal pad top plate 6
What contact was realized.When the first limiting section 61 contacts and third limiting section 71 and the first rubber metal pad top plate 6 with the second limiting section 41
After contact, secondary spring 3 becomes rigidity completely, no longer shares horizontal distortion, and limitation car body generates excessive lateral displacement, can
Guarantee recuperability of the car body under heavy load, the lateral stability of vehicle is effectively ensured.
Further, the air bag 2 is connect with the third limiting section 71, and the first rubber metal pad top plate 6 is in unloaded shape
It is free end under state, so that first rubber metal pad 31 can still carry out after the first limiting section 61 contacts limit with the second limiting section 41
Horizontal displacement.
Nonlinear Space gas spring provided by the embodiment of the present invention has three-level horizontal rigidity, the specific variation of horizontal rigidity
Process are as follows:
(1) first stage: as shown in Figure 1, when horizontal displacement occurs, initial displacement is completely by underlying second rubber
Glue heap 32 undertakes, and for the first rubber metal pad 31 since deformation occurs for inertia, horizontal rigidity is smaller at this time；
(2) second stage: as shown in Fig. 2, with the increase of horizontal displacement, the first limiting section 61 and the second limiting section 41 are just
Property contact, the first rubber metal pad 31 and the second rubber metal pad 32 are in the horizontal direction parallel connection, and shared horizontal displacement assists bullet at this time
The horizontal rigidity of spring 3 becomes larger, i.e., the inflection point of promutation occurs in horizontal rigidity, so that the lateral stiffness of air spring increases,
Be conducive to limit the lateral deflection of car body；
(3) phase III: as shown in figure 3, further increasing with horizontal displacement, the first rubber metal pad top plate 6 and third
71 rigid contact of limiting section, the first rubber metal pad 31 and the second rubber metal pad 32 no longer generate deformation at this time, and secondary spring 3 becomes completely
To be rigid, horizontal distortion is no longer shared, the inflection point of telomutation occurs in horizontal rigidity, and the lateral stiffness of air spring is into one
Step increases, and the car body recuperability provided increases, and is conducive to limit the biggish transverse shifting of car body generation.
By the variation of the horizontal rigidity in three above stage, the lateral stability and comfort of vehicle can effectively ensure that.
In addition, as a preferred embodiment, realizing that horizontal rigidity is nonlinear simultaneously, in order to further realize
The nonlinear change of vertical stiffness, as shown in Figure 1, the top of the third limiting section 71 is formed with vertical limit table top 72, institute
Vertical limit table top 72 and the first rubber metal pad top plate 6 under light condition are stated in vertical upper interval setting and described the can be limited
One rubber metal pad top plate 6 is in vertical displacement, to limit the compressive deformation of first rubber metal pad 31.By adding vertical limit
Table top 72 cooperates with the first limiting section 61, it can be achieved that having three-level vertical stiffness in the case where air spring loses gaseity.Specifically:
(1) first stage: as shown in figure 4, air spring loses under gaseity, i.e., in the case where air bag 2 is without gaseity, vertical displacement
By the first rubber metal pad 31 and the second rubber metal pad 32 series connection shared, vertical stiffness is smaller；
(2) second stage: with the increase of vertical decrement, as shown in figure 5, the first rubber metal pad top plate 6 and vertical limit
Table top 72 contacts, and vertical deformation no longer occurs for the first rubber metal pad 31 at this time, undertakes vertical displacement by the second rubber metal pad 32 completely, auxiliary
It helps the rigidity of spring 3 to increase, that is, the inflection point of the promutation of vertical stiffness occurs；
(3) phase III: with continuing growing for vertical decrement, as shown in fig. 6,61 bottom end of the first limiting section and bottom plate
4 contacts, so that vertical deformation all no longer occurs for the first rubber metal pad 31 and the second rubber metal pad 32, secondary spring 3 becomes rigidity completely,
Limit the vertical movement of car body.
Make air spring with three-level vertical stiffness through the above structure, ensure that the vertical stability of vehicle and relax
Adaptive.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
It imitates embodiment and is applied to other fields, but without departing from the technical solutions of the present invention, according to the technical essence of the invention
Any simple modification, equivalent variations and remodeling to the above embodiments, still fall within the protection scope of technical solution of the present invention.
Claims (6)
1. a kind of Nonlinear Space gas spring, including upper cover plate, air bag, secondary spring and the bottom plate set gradually, it is characterised in that:
The secondary spring includes the first rubber metal pad and the second rubber metal pad along the setting of air spring lontitudinal series, first rubber metal pad
Chamber is formed with the second rubber metal pad inner hollow, first rubber metal pad is disposed adjacent with the air bag, and described the
The one rubber metal pad side adjacent with the air bag is provided with the first rubber metal pad top plate, the first rubber metal pad top plate covering described the
The top of one rubber metal pad and the top of the chamber form the oriented chamber interior on the first rubber metal pad top plate and extend
The first limiting section, form the second limiting section that the oriented chamber interior extends on the bottom plate, second limiting section with
First limiting section is spaced in the horizontal direction to be arranged and can limit the first limiting section displacement in the horizontal direction.
2. Nonlinear Space gas spring according to claim 1, it is characterised in that: second limiting section is formed as to described
The enclosing structure of first limiting section opening, first limiting section are inserted in the enclosing structure to limit first limit
Displacement of the portion in each horizontal direction relative to second limiting section.
3. Nonlinear Space gas spring according to claim 1, it is characterised in that: the top of second rubber metal pad is provided with
Second rubber metal pad top plate, the second rubber metal pad top plate covers second rubber metal pad top but does not cover the chamber, described
The periphery of second rubber metal pad top plate forms the third limiting section that the oriented first rubber metal pad top plate extends, the third limiting section
It is spaced in the horizontal direction with the first rubber metal pad top plate and is arranged and the first rubber metal pad top plate can be limited in the horizontal direction
Displacement.
4. Nonlinear Space gas spring according to claim 1 or 3, it is characterised in that: described in the second limiting section limitation
The displacement in the horizontal direction of first limiting section is realized by the rigid contact of first limiting section and second limiting section
's；The third limiting section limit the first rubber metal pad top plate displacement in the horizontal direction be by the third limiting section with
What the rigid contact of the first rubber metal pad top plate was realized.
5. Nonlinear Space gas spring according to claim 1, it is characterised in that: the air bag and the third limiting section connect
It connects, the first rubber metal pad top plate is free end in the unloaded state.
6. Nonlinear Space gas spring according to claim 1, it is characterised in that: be formed at the top of the third limiting section
Vertical limit table top, the first rubber metal pad top plate under the vertical limit table top and light condition be arranged at vertical upper interval and
The first rubber metal pad top plate can be limited in vertical displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910769283.9A CN110469624B (en) | 2019-08-20 | 2019-08-20 | Non-linear air spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910769283.9A CN110469624B (en) | 2019-08-20 | 2019-08-20 | Non-linear air spring |
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| Publication Number | Publication Date |
|---|---|
| CN110469624A true CN110469624A (en) | 2019-11-19 |
| CN110469624B CN110469624B (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910769283.9A Active CN110469624B (en) | 2019-08-20 | 2019-08-20 | Non-linear air spring |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027980A (en) * | 2021-03-19 | 2021-06-25 | 青岛博锐智远减振科技有限公司 | Electromagnetic suspension type air spring and railway vehicle |
| CN113969957A (en) * | 2021-10-26 | 2022-01-25 | 株洲时代瑞唯减振装备有限公司 | Air spring for enhancing energy absorption and vibration reduction capacity by utilizing airflow damping |
| CN114857203A (en) * | 2022-04-27 | 2022-08-05 | 青岛博锐智远减振科技有限公司 | Air spring |
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| JPS57140937A (en) * | 1981-02-23 | 1982-08-31 | Bridgestone Corp | Bolster spring |
| US20060195240A1 (en) * | 2005-02-17 | 2006-08-31 | Laurent Beaubatie | Secondary suspension element for a rail vehicle |
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| CN207364167U (en) * | 2017-10-27 | 2018-05-15 | 株洲时代新材料科技股份有限公司 | Hourglass air spring system |
| CN109236926A (en) * | 2018-09-06 | 2019-01-18 | 中车青岛四方机车车辆股份有限公司 | Air spring and suspension type rail vehicle with it |
| CN208417374U (en) * | 2018-07-12 | 2019-01-22 | 中铁磁浮科技（成都）有限公司 | It is a kind of that the air spring of lateral stiffness is provided |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS57140937A (en) * | 1981-02-23 | 1982-08-31 | Bridgestone Corp | Bolster spring |
| US20060195240A1 (en) * | 2005-02-17 | 2006-08-31 | Laurent Beaubatie | Secondary suspension element for a rail vehicle |
| CN202215658U (en) * | 2011-08-23 | 2012-05-09 | 吉林大学 | Semi-active control type air spring for railway vehicles |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027980A (en) * | 2021-03-19 | 2021-06-25 | 青岛博锐智远减振科技有限公司 | Electromagnetic suspension type air spring and railway vehicle |
| CN113027980B (en) * | 2021-03-19 | 2022-03-22 | 青岛博锐智远减振科技有限公司 | Electromagnetic suspension type air spring and railway vehicle |
| CN113969957A (en) * | 2021-10-26 | 2022-01-25 | 株洲时代瑞唯减振装备有限公司 | Air spring for enhancing energy absorption and vibration reduction capacity by utilizing airflow damping |
| CN114857203A (en) * | 2022-04-27 | 2022-08-05 | 青岛博锐智远减振科技有限公司 | Air spring |
| CN114857203B (en) * | 2022-04-27 | 2023-11-21 | 青岛博锐智远减振科技有限公司 | Air spring |
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| CN110469624B (en) | 2021-04-13 |
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