CN109236938B - Air-free low-rigidity large-dynamic-displacement air spring system - Google Patents
Air-free low-rigidity large-dynamic-displacement air spring system Download PDFInfo
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- CN109236938B CN109236938B CN201811472406.4A CN201811472406A CN109236938B CN 109236938 B CN109236938 B CN 109236938B CN 201811472406 A CN201811472406 A CN 201811472406A CN 109236938 B CN109236938 B CN 109236938B
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- sleeve
- pressing sleeve
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- spring
- cover plate
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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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
- F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses an airless low-rigidity large-dynamic displacement air spring system which comprises an upper cover plate, an airbag, an upper prepressing sleeve, a lower prepressing sleeve and a lower pressure bearing sleeve, wherein the periphery of the upper cover plate is connected with the periphery of a sleeve opening of the lower pressure bearing sleeve through the airbag, a low-level laminated spring is arranged at the bottom of an inner cavity of the lower pressure bearing sleeve, the lower prepressing sleeve is connected to the low-level laminated spring, the sleeve opening of the lower prepressing sleeve faces the upper cover plate, the sleeve opening of the upper prepressing sleeve is in sliding connection with the sleeve opening of the lower pressure bearing sleeve and can vertically move along the sleeve opening of the lower pressure bearing sleeve, a plurality of high-level steel springs which are concentrically arranged are prepressed between the upper prepressing sleeve and the lower prepressing sleeve, and each high-level steel spring is positioned at the central position of the upper prepressing. The air spring system has the advantages of simple and compact structure, convenience in installation, small vertical rigidity, strong dynamic displacement capability, comfort and high safety.
Description
Technical Field
The invention mainly relates to a buffer damping technology, in particular to an airless low-rigidity large-dynamic-displacement air spring system.
Background
Air spring assemblies are used in a wide variety of applications, such as railway cars, heavy-duty vehicles, and other applications where cushioning or shock absorption is important. Typically, such spring assemblies include an elastomeric body positioned between a pair of rigid end plates. The elastomer is made of rubber and is compressed by a load acting on the spring assembly. In the prior art, the rubber emergency spring can creep during the service life due to the characteristics of rubber, and the vertical rigidity can be increased when the load is increased due to the nonlinearity of the rubber. In some high-speed vehicle projects, the auxiliary spring is required to have smaller vertical rigidity, smaller outer diameter size and larger dynamic displacement. Considering the stability requirement of the auxiliary spring, the requirement is difficult to be met by the existing rubber auxiliary spring.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an air spring system with air-free low rigidity and large dynamic displacement, which has the advantages of simple and compact structure, convenient installation, small vertical rigidity, strong dynamic displacement capability, comfort and high safety.
In order to solve the technical problems, the invention adopts the following technical scheme:
the air spring system comprises an upper cover plate, an air bag, an upper prepressing sleeve, a lower prepressing sleeve and a lower pressure bearing sleeve, wherein the periphery of the upper cover plate is connected with the periphery of a lower pressure bearing sleeve opening through the air bag, a low-level laminated spring is arranged at the bottom of an inner cavity of the lower pressure bearing sleeve, the lower prepressing sleeve is connected onto the low-level laminated spring, a sleeve opening of the lower prepressing sleeve faces the upper cover plate, the sleeve opening of the upper prepressing sleeve is in sliding connection with the sleeve opening of the lower pressure bearing sleeve and can vertically move along the sleeve opening of the lower pressure bearing sleeve, a plurality of high-level steel springs which are concentrically arranged are prepressed between the upper prepressing sleeve and the lower prepressing sleeve, and each high-level steel spring is positioned at the central positions of the upper prepressing sleeve and the lower prepressing sleeve.
As a further improvement of the above technical solution:
the lower pressure-bearing sleeve is provided with an inner guide table at the inner edge of the sleeve opening, the upper pre-pressing sleeve is provided with an outer guide table at the outer edge of the sleeve opening, and the outer guide table is buckled below the inner guide table.
And an avoidance cavity for the movement of the upper pre-pressing sleeve is formed between the lower pressure bearing sleeve and the periphery of the low-position laminated spring and the periphery of the lower pre-pressing sleeve.
The lower pressure-bearing sleeve comprises a bottom plate and a surrounding plate, the surrounding plate is detachably connected with the bottom plate through a bolt, the inner guide table is arranged on the inner edge of the surrounding plate, the air bag is connected with the periphery of the surrounding plate, and the low-level stack springs are arranged on the bottom plate.
The center of the top of the inner cavity of the upper prepressing bush is provided with an upper positioning column, the center of the bottom of the inner cavity of the lower prepressing bush is provided with a lower positioning column, the top end of each high-position steel spring is sleeved on the periphery of the upper positioning column, and the bottom end of each high-position steel spring is sleeved on the periphery of the lower positioning column.
The center of the bottom surface of the upper cover plate is provided with a stop table, the top surface of the upper pre-pressing sleeve is provided with a stop groove, and the size of the stop groove is larger than that of the stop table.
The top of the upper cover plate is provided with a detachable damper.
And the top of the upper pre-pressing sleeve is provided with a wear plate which is in contact with the upper cover plate in an air leakage state.
The bottom of the outer peripheral surface of the upper cover plate is provided with a snap ring, one end of the air bag is buckled with the snap ring, and the other end of the air bag is connected with the lower pressure-bearing sleeve in a self-sealing mode.
Compared with the prior art, the invention has the advantages that:
the invention relates to an air spring system without air, with low rigidity and large dynamic displacement, which comprises an upper cover plate, an air bag, an upper prepressing sleeve, a lower prepressing sleeve and a lower pressure bearing sleeve, wherein the periphery of the upper cover plate is connected with the periphery of a sleeve opening of the lower pressure bearing sleeve through the air bag, a low-level laminated spring is arranged at the bottom of an inner cavity of the lower pressure bearing sleeve, the lower prepressing sleeve is connected to the low-level laminated spring, the sleeve opening of the lower prepressing sleeve faces the upper cover plate, the sleeve opening of the upper prepressing sleeve is in sliding connection with the sleeve opening of the lower pressure bearing sleeve and can vertically move along the sleeve opening of the lower pressure bearing sleeve, a plurality of high-level steel springs which are concentrically arranged are prepressed between the upper prepressing sleeve and the lower prepressing sleeve, and each high-level steel spring is positioned at. In the structure, a series connection structure is formed by a plurality of concentrically arranged high-position steel springs and low-position laminated springs, so that lower vertical rigidity can be obtained, the safety of air leakage operation is improved, the derailment coefficient is reduced, and the structure is simple and convenient to install; the high-position steel spring and the low-position laminated spring are both positioned in a prepressing chamber formed by the upper prepressing sleeve and the lower pressure-bearing sleeve, so that smaller outer diameter size can be obtained, and the whole structure is more compact; the high-position steel spring and the low-position laminated spring initially form pre-pressure, and the vertical rigidity of the auxiliary spring under heavy load can be greatly reduced through the series structure with the pre-pressure, so that the dynamic displacement capacity of a system is improved, and the comfort of the auxiliary spring under the heavy load is also improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The reference numerals in the figures denote:
1. an upper cover plate; 11. a stop table; 12. a retaining ring; 2. an air bag; 3. mounting a pre-pressing sleeve; 31. an outer guide table; 32. an upper positioning column; 33. a stopper groove; 4. a pre-pressing sleeve is arranged; 41. a lower positioning column; 5. a lower pressure-bearing sleeve; 51. an inner guide table; 52. a base plate; 53. enclosing plates; 6. a low-level stack spring; 7. a high-position steel spring; 8. an avoidance cavity; 9. a damper; 10. a wear plate.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples.
As shown in fig. 1, an embodiment of the airless low-stiffness large dynamic displacement air spring system of the present invention includes an upper cover plate 1, an airbag 2, an upper pre-pressing sleeve 3, a lower pre-pressing sleeve 4, and a lower pressure-bearing sleeve 5, wherein the periphery of the upper cover plate 1 is connected to the periphery of the opening of the lower pressure-bearing sleeve 5 through the airbag 2, a low-level stack spring 6 is disposed at the bottom of the inner cavity of the lower pressure-bearing sleeve 5, the lower pre-pressing sleeve 4 is connected to the low-level stack spring 6, the opening of the lower pre-pressing sleeve 4 faces the upper cover plate 1, the opening of the upper pre-pressing sleeve 3 is in sliding connection with the opening of the lower pressure-bearing sleeve 5 and can vertically move along the opening of the lower pressure-bearing sleeve 5, a plurality of high-level steel springs 7 concentrically disposed are pre-pressed between the upper pre-pressing sleeve 3 and the lower pre-pressing sleeve 4, and each high-. In the structure, a series structure is formed by a plurality of concentrically arranged high-position steel springs 7 and low-position laminated springs 6, so that lower vertical rigidity can be obtained, the safety of air leakage operation is improved, the derailment coefficient is reduced, and the structure is simple and convenient to install; the high-position steel spring 7 and the low-position laminated spring 6 are both positioned in a prepressing cavity formed by the upper prepressing sleeve 3 and the lower pressure bearing sleeve 5, so that smaller outer diameter size can be obtained, and the whole structure is more compact; the high-position steel spring 7 and the low-position laminated spring 6 initially form pre-pressure, and the vertical rigidity of the auxiliary spring under heavy load can be greatly reduced through the series structure with the pre-pressure, so that the dynamic displacement capacity of a system is improved, and the comfort of the auxiliary spring under the heavy load is also improved.
In this embodiment, the inner edge of the looping of the lower pressure-bearing sleeve 5 is provided with an inner guide table 51, the outer edge of the looping of the upper pre-pressing sleeve 3 is provided with an outer guide table 31, and the outer guide table 31 is buckled below the inner guide table 51. The outer guide table 31 is buckled with the inner guide table 51 to play a role of vertical guide on one hand and prevent the upper pre-pressing sleeve 3 from being separated to form stable pre-pressing force on the other hand; in addition, the outer guide table 31 buckled on the inner guide table 51 can limit the transverse displacement of the auxiliary spring system, improve the stability and prevent the transverse instability of the auxiliary spring.
In this embodiment, an escape cavity 8 for the movement of the upper pre-pressing sleeve 3 is formed between the lower pressure-bearing sleeve 5 and the outer peripheries of the low-position stack spring 6 and the lower pre-pressing sleeve 4. This setting of dodging chamber 8 prevents to go up pre-compaction cover 3 and the range upon range of spring 6 of low level and pre-compaction cover 4 production down and interferes, has guaranteed the vertical displacement volume of going up pre-compaction cover 3.
In this embodiment, the lower pressure-bearing sleeve 5 includes a bottom plate 52 and a surrounding plate 53, the surrounding plate 53 is detachably connected to the bottom plate 52 by bolts, the inner guide table 51 is disposed on the inner edge of the surrounding plate 53, the airbag 2 is connected to the outer periphery of the surrounding plate 53, and the low-level stack spring 6 is disposed on the bottom plate 52. The lower pressure bearing sleeve 5 and the upper pre-pressing sleeve 3 are convenient to install and sleeve in a sleeved mode by the aid of the detachable connecting structures, and installation convenience is improved.
In this embodiment, the center of the top of the inner cavity of the upper pre-pressing sleeve 3 is provided with an upper positioning column 32, the center of the bottom of the inner cavity of the lower pre-pressing sleeve 4 is provided with a lower positioning column 41, the top of each high-position steel spring 7 is sleeved on the periphery of the upper positioning column 32, and the bottom of each high-position steel spring 7 is sleeved on the periphery of the lower positioning column 41. The upper positioning column 32 and the lower positioning column 41 can limit the sliding of the high-position steel spring 7, play a role in positioning, and facilitate the quick installation of the high-position steel spring 7.
In this embodiment, the stop table 11 is disposed at the center of the bottom surface of the upper cover plate 1, the stop groove 33 is disposed on the top surface of the upper pre-pressing sleeve 3, and the size of the stop groove 33 is larger than that of the stop table 11. The stop table 11 is matched with the stop groove 33, so that the transverse displacement of the air spring can be limited in the air leakage state, and different stop displacement requirements can be met.
In this embodiment, the top of the upper cover plate 1 is provided with a detachable damper 9. The damper 9 facilitates replacement and adjustment of system damping.
In this embodiment, the top of the upper pre-pressing sleeve 3 is provided with a wearing plate 10 which contacts with the upper cover plate 1 in the air-leakage state. The wearing plate 10 can reduce the friction coefficient of relative movement of air leakage, prolong the service life and reduce noise.
In this embodiment, the bottom of the outer circumferential surface of the upper cover plate 1 is provided with a snap ring 12, one end of the airbag 2 is fastened with the snap ring 12, and the other end is connected with the lower pressure-bearing sleeve 5 in a self-sealing manner. In the structure, the small opening of the air bag 2 is connected with the lower pressure-bearing sleeve 5 in a self-sealing manner, so that air leakage is prevented.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (9)
1. An airless low-rigidity large-dynamic displacement air spring system is characterized in that: the air bag pre-pressing device comprises an upper cover plate (1), an air bag (2), an upper pre-pressing sleeve (3), a lower pre-pressing sleeve (4) and a lower pressing sleeve (5), wherein the periphery of the upper cover plate (1) is connected with the periphery of a sleeve opening of the lower pressing sleeve (5) through the air bag (2), a low-level laminated spring (6) is arranged at the bottom of an inner cavity of the lower pressing sleeve (5), the lower pre-pressing sleeve (4) is connected onto the low-level laminated spring (6), the sleeve opening of the lower pre-pressing sleeve (4) faces the upper cover plate (1), the sleeve opening of the upper pre-pressing sleeve (3) is in sliding connection with the sleeve opening of the lower pressing sleeve (5) and can vertically move along the sleeve opening of the lower pressing sleeve (5), a plurality of concentrically arranged high-level steel springs (7) are pre-pressed between the upper pre-pressing sleeve (3) and the lower pre-pressing sleeve (4), and each high-level steel spring (7) is positioned at the central positions of the upper pre-pressing sleeve (3) and the lower pre-pressing;
the high-level steel springs (7) and the low-level laminated springs (6) which are concentrically arranged form a series structure; the high-position steel spring (7) and the low-position laminated spring (6) are both positioned in a prepressing chamber formed by the upper prepressing sleeve (3) and the lower pressure bearing sleeve (5); the high-position steel spring (7) and the low-position laminated spring (6) form pre-pressure initially;
an avoidance cavity (8) for the movement of the upper pre-pressing sleeve (3) is formed between the lower pressure-bearing sleeve (5) and the peripheries of the low-position laminated spring (6) and the lower pre-pressing sleeve (4).
2. The airless, low stiffness, large dynamic displacement air spring system of claim 1, wherein: the inner edge of the opening of the lower pressure bearing sleeve (5) is provided with an inner guide table (51), the outer edge of the opening of the upper pre-pressing sleeve (3) is provided with an outer guide table (31), and the outer guide table (31) is buckled below the inner guide table (51).
3. The airless, low stiffness, large dynamic displacement air spring system of claim 2, wherein: the lower pressure bearing sleeve (5) comprises a bottom plate (52) and a surrounding plate (53), the surrounding plate (53) is detachably connected with the bottom plate (52) through a bolt, the inner guide table (51) is arranged on the inner edge of the surrounding plate (53), the air bag (2) is connected with the periphery of the surrounding plate (53), and the low-level laminated spring (6) is arranged on the bottom plate (52).
4. The airless, low stiffness, large dynamic displacement air spring system of claim 3, wherein: an upper positioning column (32) is arranged at the center of the top of the inner cavity of the upper pre-pressing sleeve (3), a lower positioning column (41) is arranged at the center of the bottom of the inner cavity of the lower pre-pressing sleeve (4), the top end of each high-position steel spring (7) is sleeved on the periphery of the upper positioning column (32), and the bottom end of each high-position steel spring (7) is sleeved on the periphery of the lower positioning column (41).
5. The airless, low stiffness, large dynamic displacement air spring system of claim 4, wherein: the upper cover plate (1) bottom surface center is equipped with stop platform (11), go up pre-pressing sleeve (3) top surface and be equipped with stop groove (33), the size of stop groove (33) is greater than the size of stop platform (11).
6. The airless, low stiffness, large dynamic displacement air spring system of claim 5, wherein: the top of the upper cover plate (1) is provided with a detachable damper (9).
7. The airless low stiffness high dynamic displacement air spring system of any one of claims 1-6, wherein: and the top of the upper pre-pressing sleeve (3) is provided with a wear plate (10) which is in contact with the upper cover plate (1) in an air leakage state.
8. The airless low stiffness high dynamic displacement air spring system of any one of claims 1-6, wherein: the bottom of the outer peripheral surface of the upper cover plate (1) is provided with a snap ring (12), one end of the air bag (2) is buckled with the snap ring (12), and the other end of the air bag is connected with the lower pressure bearing sleeve (5) in a self-sealing mode.
9. The airless, low stiffness, large dynamic displacement air spring system of claim 7, wherein: the bottom of the outer peripheral surface of the upper cover plate (1) is provided with a snap ring (12), one end of the air bag (2) is buckled with the snap ring (12), and the other end of the air bag is connected with the lower pressure bearing sleeve (5) in a self-sealing mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811472406.4A CN109236938B (en) | 2018-12-04 | 2018-12-04 | Air-free low-rigidity large-dynamic-displacement air spring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811472406.4A CN109236938B (en) | 2018-12-04 | 2018-12-04 | Air-free low-rigidity large-dynamic-displacement air spring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109236938A CN109236938A (en) | 2019-01-18 |
| CN109236938B true CN109236938B (en) | 2021-03-02 |
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| CN201811472406.4A Active CN109236938B (en) | 2018-12-04 | 2018-12-04 | Air-free low-rigidity large-dynamic-displacement air spring system |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107740834A (en) * | 2017-10-27 | 2018-02-27 | 株洲时代新材料科技股份有限公司 | Hourglass air spring system |
| CN108302154A (en) * | 2017-12-25 | 2018-07-20 | 株洲时代新材料科技股份有限公司 | Combined air spring assembly |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101101030A (en) * | 2007-06-01 | 2008-01-09 | 成都飞机工业（集团）有限责任公司 | Air spring with stop and limit device |
| CN102007318A (en) * | 2008-02-25 | 2011-04-06 | 株式会社普利司通 | Air spring device |
| CN107830105A (en) * | 2017-10-27 | 2018-03-23 | 株洲时代新材料科技股份有限公司 | A kind of prepressing type air spring assembly |
| CN107740835A (en) * | 2017-11-13 | 2018-02-27 | 株洲时代新材料科技股份有限公司 | A kind of combination type air spring system |
| CN207997867U (en) * | 2018-02-24 | 2018-10-23 | 中车青岛四方机车车辆股份有限公司 | A kind of air spring, the bogie and rail vehicle for being equipped with the air spring |
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2018
- 2018-12-04 CN CN201811472406.4A patent/CN109236938B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107740834A (en) * | 2017-10-27 | 2018-02-27 | 株洲时代新材料科技股份有限公司 | Hourglass air spring system |
| CN108302154A (en) * | 2017-12-25 | 2018-07-20 | 株洲时代新材料科技股份有限公司 | Combined air spring assembly |
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| Publication number | Publication date |
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| CN109236938A (en) | 2019-01-18 |
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