CN104044414A - Rotary sealing device - Google Patents
Rotary sealing device Download PDFInfo
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- CN104044414A CN104044414A CN201410233699.6A CN201410233699A CN104044414A CN 104044414 A CN104044414 A CN 104044414A CN 201410233699 A CN201410233699 A CN 201410233699A CN 104044414 A CN104044414 A CN 104044414A
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- closing plate
- seal
- sealing
- sleeve
- rotary sealing
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Abstract
The invention provides a rotary sealing device composed of a sealing shell 1, an o-ring 2, a first sealing plate 3, rotary sealing rings 4 and 6, a sealing sleeve 5, a second sealing plate 7, a supporting sleeve 8, an elastic retainer ring 9 and a seal shaft 10; the supporting sleeve 8 is arranged in the sealing shell 1; the first sealing plate 3 and the second sealing plate 7 are respectively arranged at both ends of the supporting sleeve 8 in a positioning mode; the seal shaft 10 is supported by two bearings and arranged on the first sealing plate 3 and the second sealing plate 7; the sealing sleeve 5 is arranged between the two sealing plates; positions respectively close to the sealing plates and also located between the seal shaft (10) and the sealing sleeve (5) are respectively provided with the rotary sealing ring 4 and the rotary sealing ring 6; the o-ring 2 is arranged between the first sealing plate 3 and the sealing shell 1; the elastic retainer ring 9 is arranged at the right side of the second sealing plate 7 and arranged on the sealing shell 1. The rotary sealing device has longer service life and better pressure retaining effect when used for rotary sealing under an action of sustained pressure.
Description
Technical field
The present invention relates to a kind of rotary sealing appts, be specially the rotary sealing appts in vehicle center tyre air-charging and air-discharging system.
Background technology
Center Tyre Inflation/Deflation System is once the system that is enclosed within vehicle and can regulates at any time in advancing inflation pressure of tire, and its Main Function is to improve overland vehicle by the ability of the soft surfaces such as sandy beach, muddy, marsh.
Center Tyre Inflation/Deflation System is made up of parts such as rotary sealing appts, wheel valve, locking-valve, maneuver control device and sources of the gas, wheel valve is arranged on wheel, for cutting off the effect that tire air chamber and rotary sealing appts make rotary sealing appts under packing state and atmosphere communicates and do not bear gaseous tension, extend service life of rotating seal ring with this.Wheel valve is a pneumatic element, and its volume and weight of its poor reliability is all larger, on wheel, installs and also needs counterweight, and installation and maintenance is also inconvenient; Wheel valve also makes air-charging and air-discharging system poor to the precision of tire pressure adjustment; Because wheel valve under packing state by tire air chamber isolation, the inflation pressure state that Center Tyre Inflation/Deflation System can not Real-Time Monitoring tire.
A kind of desirable state, it is exactly the inflation pressure of lasting monitoring tire, stopping Shi Junke in Vehicle Driving Cycle neutralization is presented at tire pressure signal on the read out instrument in operator's compartment in real time, allow chaufeur can recognize at any time the subtle change of tire condition, and keep in real time inflation pressure of tire in setting level by inflation and bleed air operation, safeguard tire with actv., this just requires rotary sealing appts to have higher sealing property and longer service life.
A kind of rotary sealing appts is disclosed in the patent document of the patent of invention of having authorized (200810131073.9), in this technical scheme, rotating seal ring can be thrown off sealing voluntarily and do not rubbed under the state that there is no gaseous tension effect, rotating seal ring only weares and teares in the time of inflation/deflation, can improve the service life of rotary sealing appts.In this structure, the axle coordinating with rotating seal ring suspends, the axle of seal ring and the concentricity in hole are installed and only depend on the weight partly that suspends, and it is irrelevant with other factors, rotating seal ring be radially uniform wear, there is longer service life, can be used for the rotary seal under continuous effect.Use rubber seal to do rotating seal ring, friction drag while operation under high pressure conditions for large-sized rotary sealing appts is very large, cal val is also larger, and the heat of generation can not distribute in time and cause the poly-decline that rises the aging and intensity that also can accelerate seal ring of temperature.In view of rubber seal is generally not more than 0.5m/s (good this numerical value of fluorine glue seal ring can be lower for resistance to abrasion) as the maximum friction linear velocity allowable of rotary dynamic seal, use rubber seal to do rotating seal ring long-time rotary sealing appts using under lower friction linear velocity and continuous effect in order to realize, this just needs innovation structure, reduce the size of seal ring, extend the service life of rotating seal ring.
Summary of the invention
The object of the present invention is to provide a kind of rotary sealing appts, improve the service life of doing low linear velocity rotary dynamic seal under continuous of rubber seal.
The technical solution adopted in the present invention is: a kind of rotary sealing appts, by capsul (1), o type circle (2), the first closing plate (3), rotating seal ring (4), (6), seal sleeve (5), the second closing plate (7), stop sleeve (8), circlip (9), the coaxial mounted revolving parts composition such as seal shaft (10), described capsul (1) is provided with air-path interface (a), described the first closing plate (3) and the second closing plate (7) are the seal faces with centre hole that bearing is installed, described seal shaft (10) is a hollow shaft that is provided with axially extending bore (b) and some radial direction through hole (c) that are communicated with axially extending bore (b), its annexation is: stop sleeve (8) is arranged on capsul (1), the first closing plate (3) location and installation is at the left end of stop sleeve (8), the second closing plate (7) location and installation is at the right-hand member of stop sleeve (8), described seal shaft (10) is arranged on the first closing plate (3) and the second closing plate (7) by two bearings, seal sleeve (5) is arranged between the first closing plate (3) and the second closing plate (7), at close each closing plate (3), (7) position and be positioned at seal shaft (10) and seal sleeve (5) between position be separately installed with a rotating seal ring (4), (6), between the first closing plate (3) and capsul (1), a static seal o type circle (2) is installed, circlip (9) is installed on the right side of the second closing plate (7) and is arranged on capsul (1).
The length of seal sleeve (5) is slightly less than the spacing of the first closing plate (3) and the second closing plate (7) latter two seal face of location and installation.
Radial direction through hole on described seal shaft (10) is positioned at the position between two rotating seal rings (4), (6).
The principle of work of rotary sealing appts of the present invention is: rotating seal ring (4), (6) with seal shaft (10) and seal sleeve (5) radial seal, when pressed gas enters into after rotary sealing appts, rotating seal ring (4), (6) under the effect of pressed gas, move and be pressed on each self-corresponding closing plate to each self-corresponding closing plate rapidly and form side seal, now, pressed gas can only be by turnover between the air-path interface on housing (a) and the axially extending bore (b) of seal shaft (10), seal shaft (10) does relative rotary motion with other parts except this axle, pressed gas is just transferred to the parts of rotation by irrotational parts.
If seal shaft and tire synchronous rotary, other parts except seal shaft (10) are quiescence, the axially extending bore (b) of seal shaft (10) is communicated with tire air chamber, and the air-path interface (a) of capsul (2) is connected with the source of the gas being arranged on vehicle frame.
If seal shaft (20) is relative with vehicle frame static, other parts except seal shaft (10) with tire synchronous rotary, the axially extending bore (b) of seal shaft (10) is communicated with the source of the gas being arranged on vehicle frame, and the air-path interface (a) on capsul (1) is connected with tire air chamber.
For the lower tire of inflation pressure, select fluorine glue o type circle as rotating seal ring, select lip circle as rotating seal ring for the higher tire of inflation pressure, described lip circle can be selected MYA shape seal ring.
The invention has the beneficial effects as follows: because seal sleeve floats, the axle coordinating with rotating seal ring and the concentricity in hole only depend on the weight of unsteady seal sleeve and have nothing to do with other factors, the impact of having avoided the factors such as Mismachining tolerance, installation error and the bearing accuracy in axle and hole to bring completely, making rotating seal ring footpath is upwards uniform wear, and can auto-compensation after the end wear of rotating seal ring, this is useful for the service life that extends rotating seal ring; Especially while using the effective fluorine glue o type circle of rub resistance as rotating seal ring, in rotatablely moving under lower pressure and lasting gaseous tension effect, can realize rotating seal ring and not wear and tear, use the lip circle of fluorine glue also can obtain longer service life as rotating seal ring for rotatablely moving under elevated pressures and lasting gaseous tension effect.In this rotary sealing appts, the contact surface of S. A. and rotating seal ring is that sealing surface is also main friction face, because the size of S. A. is less, the maximum friction linear velocity of rotating seal ring is suitable with the maximum line velocity value that rubber seal allows as dynamic seal ring, therefore the rotating seal ring that uses rubber seal to do continuous effect is feasible.The frictional heat amount of whole rotary sealing appts is little, temperature is low, can prevent that rubber seal is aging and avoid reducing the intensity of seal ring.Evidence, this structure has extended the service life of rotating seal ring greatly.
Brief description of the drawings
Fig. 1 is the structural representation of rotary sealing appts of the present invention;
In figure, 1, capsul, 2, o type circle, 3, the first closing plate, 4, rotating seal ring, 5, seal sleeve, 6, rotating seal ring, 7, the second closing plate, 8, stop sleeve, 9, circlip, 10 seal shafts, a, air-path interface, b, axially extending bore, c, radial direction through hole.
Detailed description of the invention
A kind of rotary sealing appts, by capsul (1), o type circle (2), the first closing plate (3), rotating seal ring (4), (6), seal sleeve (5), the second closing plate (7), stop sleeve (8), circlip (9), the coaxial mounted revolving parts composition such as seal shaft (10), described capsul (1) is provided with air-path interface (a), described the first closing plate (3) and the second closing plate (7) are the seal faces with centre hole that bearing is installed, described seal shaft (10) is a hollow shaft that is provided with axially extending bore (b) and some radial direction through hole (c) that are communicated with axially extending bore (b), its annexation is: stop sleeve (8) is arranged on capsul (1), the first closing plate (3) location and installation is at the left end of stop sleeve (8), the second closing plate (7) location and installation is at the right-hand member of stop sleeve (8), described (10) two bearings of seal shaft are arranged on the first closing plate (3) and the second closing plate (7), seal sleeve (5) is arranged between the first closing plate (3) and the second closing plate (7), at close each closing plate (3), (7) position and be positioned at seal shaft (10) and seal sleeve (5) between position be separately installed with a rotating seal ring (4), (6), between the first closing plate (3) and capsul (1), a static seal o type circle (2) is installed, circlip (9) is installed on the right side of the second closing plate (7) and is arranged on capsul (1).
Radial direction through hole on seal shaft (10) is positioned at the position between two rotating seal rings (4), (6).
Claims (6)
1. a rotary sealing appts, by capsul (1), o type circle (2), the first closing plate (3), rotating seal ring (4), (6), seal sleeve (5), the second closing plate (7), stop sleeve (8), circlip (9), the coaxial mounted revolving parts composition such as seal shaft (10), its technical characterictic is: stop sleeve (8) is arranged on capsul (1), the first closing plate (3) location and installation is at the left end of stop sleeve (8), the second closing plate (7) location and installation is at the right-hand member of stop sleeve (8), described seal shaft (10) is arranged on the first closing plate (3) and the second closing plate (7) by two bearings, seal sleeve (5) is arranged between the first closing plate (3) and the second closing plate (7), at close each closing plate (3), (7) position and be positioned at seal shaft (10) and seal sleeve (5) between position be separately installed with a rotating seal ring (4), (6), between the first closing plate (3) and capsul (1), a static seal o type circle (2) is installed, circlip (9) is installed on the right side of the second closing plate (7) and is arranged on capsul (1).
2. rotary sealing appts according to claim 1, its technical characterictic is: described capsul (1) is provided with air-path interface (a).
3. rotary sealing appts according to claim 1, its technical characterictic is: described seal shaft (10) is a hollow shaft that is provided with axially extending bore (b).
4. rotary sealing appts according to claim 1, its technical characterictic is: the length of seal sleeve (5) is slightly less than the spacing of the first closing plate (3) and the second closing plate (7) latter two seal face of location and installation.
5. rotary sealing appts according to claim 1, its technical characterictic is: the radial direction through hole on described seal shaft (10) is positioned at the position between two rotating seal rings (4), (6).
6. rotary sealing appts according to claim 1, its technical characterictic is: described rotating seal ring is fluorine glue o type circle or fluorine Jiao Chunxingquan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410233699.6A CN104044414A (en) | 2014-05-26 | 2014-05-26 | Rotary sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410233699.6A CN104044414A (en) | 2014-05-26 | 2014-05-26 | Rotary sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104044414A true CN104044414A (en) | 2014-09-17 |
Family
ID=51497990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410233699.6A Pending CN104044414A (en) | 2014-05-26 | 2014-05-26 | Rotary sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104044414A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004264A (en) * | 2015-03-31 | 2016-10-12 | 美驰重型车***卡梅里有限责任公司 | Actuator |
-
2014
- 2014-05-26 CN CN201410233699.6A patent/CN104044414A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004264A (en) * | 2015-03-31 | 2016-10-12 | 美驰重型车***卡梅里有限责任公司 | Actuator |
| CN106004264B (en) * | 2015-03-31 | 2018-04-27 | 美驰重型车***卡梅里有限责任公司 | Actuator |
| US10137746B2 (en) | 2015-03-31 | 2018-11-27 | Meritor Heavy Vehicle Systems Cameri Spa | Actuator |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140917 |