CN102490549A - Rotary sealing device - Google Patents

Rotary sealing device Download PDF

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Publication number
CN102490549A
CN102490549A CN2011104404848A CN201110440484A CN102490549A CN 102490549 A CN102490549 A CN 102490549A CN 2011104404848 A CN2011104404848 A CN 2011104404848A CN 201110440484 A CN201110440484 A CN 201110440484A CN 102490549 A CN102490549 A CN 102490549A
Authority
CN
China
Prior art keywords
seat ring
sealing
oil
oil gas
seat
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.)
Pending
Application number
CN2011104404848A
Other languages
Chinese (zh)
Inventor
孔卓
崔慧萍
袁其旺
张�林
李彬
肖将
徐秀良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sinotruk Jinan Power Co Ltd
China National Heavy Duty Truck Group Jinan Power Co Ltd
Original Assignee
China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China National Heavy Duty Truck Group Jinan Power Co Ltd filed Critical China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority to CN2011104404848A priority Critical patent/CN102490549A/en
Publication of CN102490549A publication Critical patent/CN102490549A/en
Pending legal-status Critical Current

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  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Abstract

The invention relates to a rotary sealing device, which is used for a two-stage driving axle charging and discharging system of a heavy-duty special vehicle. The device comprises a seat retainer, a seat ring, a sealing air chamber and an oil gas seal, wherein the seat retainer is arranged in an inner cavity of a hub; the seat ring is arranged between the hub and a shaft head and provided with a communicating hole; the sealing air chamber is formed on the seat retainer and is communicated with an air channel of the shaft head through the communicating hole; the oil gas seal and the seat retainer are integrated; the oil gas seal comprises oil seal bodies arranged on two sides of the sealing air chamber; the oil seal bodies are provided with two lips positioned between the sealing seat ring and the seat retainer; two frameworks are arranged in the oil seal bodies; and the oil seal bodies are positioned between the hub and the seat ring. The sealing reliability of an oil gas seal product is improved; and only the seat ring is needed to be replaced when a matching surface of the oil gas seal is damaged, so that the device is convenient to maintain.

Description

Rotary sealing appts
Technical field
The present invention relates to a kind of rotary sealing appts, belong 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 objective of the invention is through a kind of rotary sealing appts sealing reliability, easy to maintenance and simple in structure.
To achieve these goals, the present invention 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.
Beneficial effect of the present invention:
Rotary sealing appts of the present invention 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 present invention;
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 present invention is explained further details, following explanation only is exemplary, does not limit protection scope of the present invention.
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 is used to explain technical scheme of the present invention but not to its restriction; Although the present invention is specified through embodiment; Under the field personnel should make amendment or the part technical characterictic is equal to replacement with reference to concrete mode of the present invention; But under the spirit that does not break away from technical scheme of the present invention, above-mentioned change or be equal to replacement and should belong in the technical scheme scope that the present invention 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.
CN2011104404848A 2011-12-26 2011-12-26 Rotary sealing device Pending CN102490549A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011104404848A CN102490549A (en) 2011-12-26 2011-12-26 Rotary sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011104404848A CN102490549A (en) 2011-12-26 2011-12-26 Rotary sealing device

Publications (1)

Publication Number Publication Date
CN102490549A true CN102490549A (en) 2012-06-13

Family

ID=46182426

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011104404848A Pending CN102490549A (en) 2011-12-26 2011-12-26 Rotary sealing device

Country Status (1)

Country Link
CN (1) CN102490549A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108757948A (en) * 2018-08-17 2018-11-06 北京北方创成车辆技术发展有限公司 Rotate oil-gas sealing device and central aerating and exhaust device
CN109764135A (en) * 2018-12-25 2019-05-17 陕西润泽橡胶制品有限公司 A kind of oil gas envelope of automatic pneumatic tire sealing
CN115949750A (en) * 2023-03-10 2023-04-11 江苏洁维生物设备股份有限公司 Bioreactor (mixing) shaft sealing device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030235358A1 (en) * 2002-05-31 2003-12-25 Skf Industrie S.P.A. Bearing unit for the hub of a vehicle wheel equipped with a tyre inflating system
CN2651020Y (en) * 2003-10-08 2004-10-27 中国三江航天工业集团公司 Double-lip sealing airtight check
CN102069680A (en) * 2011-01-06 2011-05-25 中国重汽集团济南动力有限公司 Bridge for central tire inflation/deflation structure
CN202378632U (en) * 2011-12-26 2012-08-15 中国重汽集团济南动力有限公司 Rotary sealing device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030235358A1 (en) * 2002-05-31 2003-12-25 Skf Industrie S.P.A. Bearing unit for the hub of a vehicle wheel equipped with a tyre inflating system
CN2651020Y (en) * 2003-10-08 2004-10-27 中国三江航天工业集团公司 Double-lip sealing airtight check
CN102069680A (en) * 2011-01-06 2011-05-25 中国重汽集团济南动力有限公司 Bridge for central tire inflation/deflation structure
CN202378632U (en) * 2011-12-26 2012-08-15 中国重汽集团济南动力有限公司 Rotary sealing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108757948A (en) * 2018-08-17 2018-11-06 北京北方创成车辆技术发展有限公司 Rotate oil-gas sealing device and central aerating and exhaust device
CN109764135A (en) * 2018-12-25 2019-05-17 陕西润泽橡胶制品有限公司 A kind of oil gas envelope of automatic pneumatic tire sealing
CN115949750A (en) * 2023-03-10 2023-04-11 江苏洁维生物设备股份有限公司 Bioreactor (mixing) shaft sealing device

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C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20120613