CN202378632U - Rotary sealing device - Google Patents
Rotary sealing device Download PDFInfo
- Publication number
- CN202378632U CN202378632U CN2011205499658U CN201120549965U CN202378632U CN 202378632 U CN202378632 U CN 202378632U CN 2011205499658 U CN2011205499658 U CN 2011205499658U CN 201120549965 U CN201120549965 U CN 201120549965U CN 202378632 U CN202378632 U CN 202378632U
- Authority
- CN
- China
- Prior art keywords
- seat ring
- oil
- sealing
- wheel hub
- air
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a rotary sealing device, which is used for a two-level drive axle inflating-deflating system of a special heavy vehicle. The rotary sealing device comprises a seat retainer, a seat ring, a sealing air chamber and an oil and air seal; the seat retainer is installed inside an inner cavity of a wheel hub; the seat ring is arranged between the wheel hub and a shaft end and is provided with a communication hole; the sealing air chamber is arranged on the seat retainer and is communicated with an air passage of the shaft end through the communication hole; and the oil and air seal and the seat retainer are of an integral structure, the oil and air seal comprises oil seal main bodies which are respectively arranged at two sides of the sealing air chamber, each oil seal main body comprises a double-lip structure which is arranged between the sealing seat ring and the seat retainer, double skeletons are arranged inside the oil seal main body, and the oil seal main body is arranged between the wheel hub and the seat ring. Due to the adoption of the rotary sealing device, the sealing reliability of the oil and air seal product can be improved; and only the seat retainer is required to be replaced when the matched surface of the oil and air seal is damaged, so that convenience in maintenance can be achieved.
Description
Technical field
The utility model relates to a kind of rotary sealing appts, belongs to heavy duty truck twin-stage drive axle driving air-charging and air-discharging system.
Background technology
For improving special vehicle and field work engineering truck for the comformability under the complicated driving conditions such as soft arable land, desert, snow deposit, marsh; Need vehicle that the function of filling, exitting for tire in the driving process is provided, to guarantee good crossing ability and the safety of vehicle.Special vehicle and field work require vehicle under parking or motoring condition, to accomplish the adjustment of tire pressure automatically, and key is the leak tightness of the automatic air-charging and air-discharging system of tire.
The rotary sealing appts that the automatic air-charging and air-discharging system of existing tire adopts is to adopt in the both sides of sealed air chamber independently that the oil gas envelope seals, and the oil gas envelope directly contact with spindle nose with wheel hub, for guaranteeing to seal reliably the structure that the normal one-sided increase oil gas of employing seals number.This structure is owing to the oil gas envelope is directly located by wheel hub and spindle nose, and oil sealing locating surface width is little, is easy to generate the disalignment between the oil gas envelope Internal and external cycle, causes the seal failure of oil gas envelope.Simultaneously, need to change spindle nose assembly, inconvenient maintenance after the wearing and tearing of oil gas envelope fitting surface.
Summary of the invention
The purpose of the utility model is through a kind of rotary sealing appts, sealing reliability, easy to maintenance and simple in structure.
To achieve these goals, the utility model adopts following technical scheme:
A kind of rotary sealing appts is used for the twin-stage drive axle air-charging and air-discharging system of heavy special vehicle, comprises seat ring, seat ring, sealed air chamber and oil gas envelope; Seat ring is installed in the wheel hub inner chamber; Seat ring is arranged between wheel hub and the spindle nose and is provided with intercommunicating pore; Sealed air chamber is arranged on the seat ring and through intercommunicating pore and communicates with the air flue of spindle nose; The oil gas envelope is an integral structure with seat ring; And the oil gas package is drawn together the oil sealing body that is arranged on the sealed air chamber both sides; The oil sealing body comprises the lips mouth structure between sealing seat ring and seat ring, and the inside of oil sealing body is provided with two skeletons, and the oil sealing body is between wheel hub and seat ring.
Further, adopt an O type circle static sealing between seat ring and the wheel hub.
Further, adopt the 2nd O type circle static sealing between seat ring and the spindle nose.
Further, the skeleton cross section is L shaped.
Further, lips mouth structure material is a rubber, and the back side is provided with passive spacer ring.
Further, spacer ring is a non-metallic material.
The beneficial effect of the utility model:
The utility model rotary sealing appts is integrated the oil gas envelope and the seat ring of both sides; Guarantee that both sides oil gas envelope positioning reference is unified, because the seat circle is located, width is bigger; Help guaranteeing the right alignment between the oil gas envelope Internal and external cycle, improve the sealing reliability of oil gas envelope product; Increase seat ring between oil gas envelope and the spindle nose simultaneously, only need change seat ring, convenient for maintaining when oil gas envelope fitting surface damages.
Description of drawings
Fig. 1 is the structural representation of the selected embodiment of the utility model;
Wherein: 1, wheel hub, the 2, the one O type circle, 3, seat ring, 4, skeleton, 5, the lips mouth, 6, sealed air chamber, 7, spacer ring, 8, seat ring, the 9, the 2nd O type circle, 10, spindle nose, 11, the oil sealing body, a, intercommunicating pore, b, air flue.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is explained further details, following explanation only is exemplary, does not limit the protection domain of the utility model.
With reference to accompanying drawing 1, a kind of rotary sealing appts is used for the twin-stage drive axle air-charging and air-discharging system of heavy special vehicle, comprises seat ring 3, seat ring 8, sealed air chamber 6 and oil gas envelope; Seat ring 3 is installed in wheel hub 1 inner chamber, adopts an O type circle 2 static sealings between seat ring 3 and the wheel hub 1; Seat ring 8 is arranged between wheel hub 1 and the spindle nose 10, adopts the 2nd O type circle 9 static sealings between seat ring 8 and the spindle nose 10, and seat ring 8 is provided with intercommunicating pore a; Sealed air chamber 6 is arranged on the seat ring 3 and through intercommunicating pore a and communicates with the air flue b of spindle nose 10; The oil gas envelope is an integral structure with seat ring 3; And the oil gas package is drawn together the oil sealing body 11 that is arranged on sealed air chamber 6 both sides; Oil sealing body 11 comprises lips mouth 5 structures; Lips mouth 5 structures sealing between sealing seat ring 8 and seat ring 3, the inside of oil sealing body 11 are provided with two skeletons 4, and oil sealing body 11 is between wheel hub 1 and seat ring 8.
Skeleton 4 cross sections are L shaped, and two skeletons 4 are provided with each other dorsad.
Lips mouth 5 structure materials are rubber, and the back side is provided with passive spacer ring 7, and spacer ring 7 is a non-metallic material.
Above embodiment only be used to explain the utility model technical scheme but not to its restriction; Although the utility model is specified through embodiment; Under the field personnel should make amendment or the part technical characterictic is equal to replacement with reference to the concrete mode of the utility model; But under the spirit that does not break away from the utility model technical scheme, above-mentioned change or be equal to replacement and should belong in the technical scheme scope that the utility model asks for protection.
Claims (6)
1. rotary sealing appts is used for the twin-stage drive axle air-charging and air-discharging system of heavy special vehicle, it is characterized in that: comprise seat ring (3), seat ring (8), sealed air chamber (6) and oil gas envelope; Seat ring (3) is installed in wheel hub (1) inner chamber; Seat ring (8) is arranged between wheel hub (1) and the spindle nose (10) and is provided with intercommunicating pore (a); Sealed air chamber (6) is arranged on seat ring (3) and upward and through intercommunicating pore (a) communicates with the air flue (b) of spindle nose (10); The oil gas envelope is an integral structure with seat ring (3); And the oil gas package is drawn together the oil sealing body (11) that is arranged on sealed air chamber (6) both sides; Oil sealing body (11) comprises lips mouth (5) structure that is positioned between sealing seat ring (8) and the seat ring (3); The inside of oil sealing body (11) is provided with two skeletons (4), and oil sealing body (11) is positioned between wheel hub (1) and the seat ring (8).
2. according to the said rotary sealing appts of claim 1, it is characterized in that: adopt O type circle (a 2) static sealing between seat ring (3) and the wheel hub (1).
3. according to claim 1 or 2 said rotary sealing appts, it is characterized in that: adopt the 2nd O type circle (9) static sealing between seat ring (8) and the spindle nose (10).
4. according to claim 1 or 2 said rotary sealing appts, it is characterized in that: skeleton (4) cross section is L shaped.
5. according to claim 1 or 2 said rotary sealing appts, it is characterized in that: lips mouth (5) structure material is a rubber, and the back side is provided with passive spacer ring (7).
6. according to the said rotary sealing appts of claim 5, it is characterized in that: spacer ring (7) is a non-metallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205499658U CN202378632U (en) | 2011-12-26 | 2011-12-26 | Rotary sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205499658U CN202378632U (en) | 2011-12-26 | 2011-12-26 | Rotary sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202378632U true CN202378632U (en) | 2012-08-15 |
Family
ID=46627154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205499658U Expired - Lifetime CN202378632U (en) | 2011-12-26 | 2011-12-26 | Rotary sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202378632U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490549A (en) * | 2011-12-26 | 2012-06-13 | 中国重汽集团济南动力有限公司 | Rotary sealing device |
| CN103253082A (en) * | 2013-02-04 | 2013-08-21 | 三一汽车制造有限公司 | Drive axle and engineering machine |
-
2011
- 2011-12-26 CN CN2011205499658U patent/CN202378632U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490549A (en) * | 2011-12-26 | 2012-06-13 | 中国重汽集团济南动力有限公司 | Rotary sealing device |
| CN103253082A (en) * | 2013-02-04 | 2013-08-21 | 三一汽车制造有限公司 | Drive axle and engineering machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120815 |