CN202203403U - Oil seal for wheel edge of engineering machinery - Google Patents
Oil seal for wheel edge of engineering machinery Download PDFInfo
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- CN202203403U CN202203403U CN2011202437185U CN201120243718U CN202203403U CN 202203403 U CN202203403 U CN 202203403U CN 2011202437185 U CN2011202437185 U CN 2011202437185U CN 201120243718 U CN201120243718 U CN 201120243718U CN 202203403 U CN202203403 U CN 202203403U
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Abstract
The utility model relates to a sealing component, which belongs to the technical field of structures of sealing components. An oil seal for a wheel edge of engineering machinery comprises a framework and a rubber sealing body which is attached to the framework, and is characterized in that: the framework has a double-framework structure; the framework comprises an inner framework (4) in interference fit with a shaft and an outer framework (7) in interference fit with a cavity; and the rubber sealing body is encircled between the outer framework (7) and the inner framework (4) and forms a labyrinth-type structure through a first protective lip (1), a second protective lip (2), a third protective lip (3) and a main flange (5) which are raised on the outer surface of the rubber sealing body. Through a double-framework labyrinth structure, the outer framework is in interference fit with the cavity, the inner framework is in interference fit with the shaft, and the main flange directly contacts the inner framework to realize a sealing effect; and a reasonable spatial structure can keep the main flange away from water and dust by a certain distance, so that ineffective sealing caused by invasion of muddy water can be prevented effectively.
Description
Technical field
The utility model relates to a kind of Sealing, and particularly a kind of engineering machinery wheel limit oil sealing belongs to the seal configuration technical field.
Background technique
At present, the oil sealing of conventional construction is as shown in Figure 1, and it exists defective following:
1, to the requirement of cavity
Conventional construction oil sealing external diameter is an iron-clad, directly contacts with cavity, and is easy to wear, the slightly degree of making of cavity required very high, is prone to scratch cavity during installation, to working life of cavity and oil sealing all receiving very big influence.
2, to the requirement of axle
Traditional oil seal structure master lip is directly to touch with being coupling, and main lip easy to wear causes main lip seal effect to lose efficacy, and reduces product working life.
3, to the requirement of working environment
Main lip is unique anti-lip care; Because of wheel hub running environmental characteristics; Determine main lip seal place influenced by extraneous muddy water, thereby reduce sealability that institute is in case muddy water is attacked also is the emphasis in enhanced feature and life-span; The structure of tradition oil sealing does not have the specific aim design, and it will unite use with a lips type oil sealing usually.
4, maintain and replace
The oil sealing of conventional construction is when maintenance or changing, and axial plane needs machining again, and can only use once, just pulls down and scraps.
Summary of the invention
The purpose of the utility model is to solve the deficiency that above-mentioned prior art exists, the engineering machinery wheel limit oil sealing that a kind of reasonable in design is provided, wear resistance is good, sealability is excellent, the while can be improved working life.
The technological scheme of the utility model is following:
Engineering machinery wheel limit oil sealing; Comprise skeleton and attached to the rubbery sealed body on the skeleton; Its special way is that said skeleton adopts two skeletal structures; Comprise with the inner frame 4 of axle interference fit and with the outer skeleton 7 of cavity interference fit, said rubbery sealed body surrounds between outer skeleton 7 and the inner frame 4, and the anti-lip care 1 in first road, the anti-lip care 2 in second road, the anti-lip care 3 in the 3rd road and the main lip 5 formation maze-type structures that are convexly equipped with through its outer surface;
The longitudinal cross-section of said inner frame 4 is " " " shape; the longitudinal cross-section of outer skeleton 7 is shaped as that top by " L " shape and two shapes of " Z " shape links together and the shape formed, and " " of inner frame 4 " the shape horizontal edge places the top of " L " shape horizontal edge of outer skeleton 7, the bottom on " Z " shape lower horizontal limit;
The anti-lip care 1 in said first road and anti-2 " " of being located at inner frame 4 of lip care in second road " free end of shape horizontal edge, and simultaneously and two axial seals of outer skeleton 7 formation;
Said main lip 5 binds round the inboard of being located at inner frame 4 by self-tightening spring 6, and its underpart is provided with being located at inner frame 4 with the anti-lip care 3 in the 3rd inboard road;
The side that said inner frame 4 cooperates with axle is provided with has the protruding rubber layer of ripple, and the lateral parts that said outer skeleton 7 cooperates with cavity is provided with rubber layer.
The utility model engineering machinery wheel limit oil sealing produces a mouthful labyrinth structure that adopts two skeletons, outer skeleton (being with main lip) and cavity interference fit; Inner frame and axle interference fit, main lip directly contacts with inner frame, forms sealing; Oil sealing has the anti-lip care in 3 roads, and the anti-lip care in first and second road can prevent that the big silt particle material from getting into, and the anti-lip care in the 3rd road prevents that muddy water from getting into; The reasonable space structure can make main lip and water and dust keep a segment distance, effectively prevents the seal failure problem that causes because of the muddy water invasion.
Description of drawings
Fig. 1: be prior art engineering machinery wheel limit oil seal structure schematic representation;
Fig. 2: the utility model engineering machinery wheel oil sealing longitudinal cross-section, limit view.
Embodiment
Following with reference to accompanying drawing, provide the embodiment of the utility model, be used for the formation of the utility model is further specified.
Embodiment 1
The engineering machinery wheel limit oil sealing of present embodiment is with reference to figure 2; Comprise skeleton and attached to the rubbery sealed body on the skeleton; Said skeleton adopts two skeletal structures; Comprise with the inner frame 4 of axle interference fit and with the outer skeleton 7 of cavity interference fit, said rubbery sealed body surrounds between outer skeleton 7 and the inner frame 4, and the anti-lip care 1 in first road, the anti-lip care 2 in second road, the anti-lip care 3 in the 3rd road and the main lip 5 formation maze-type structures that are convexly equipped with through its outer surface; The longitudinal cross-section of inner frame 4 is " " " shape; the longitudinal cross-section of outer skeleton 7 is shaped as that top by " L " shape and two shapes of " Z " shape links together and the shape formed, and " " of inner frame 4 " the shape horizontal edge places the top of " L " shape horizontal edge of outer skeleton 7, the bottom on " Z " shape lower horizontal limit; The anti-lip care 1 in first road and anti-2 " " of being located at inner frame 4 of lip care in second road " free end of shape horizontal edge, and simultaneously and two axial seals of outer skeleton 7 formation; Main lip 5 binds round the inboard of being located at inner frame 4 by self-tightening spring 6, and its underpart is provided with being located at inner frame 4 with the anti-lip care 3 in the 3rd inboard road; The side that inner frame 4 cooperates with axle is provided with has the protruding rubber layer of ripple, and the lateral parts that said outer skeleton 7 cooperates with cavity is provided with rubber layer.
The engineering machinery wheel limit oil sealing of present embodiment is compared with traditional structure oil sealing, has following advantage:
1, to the cavity requirement
The external diameter of present embodiment oil sealing is an outpacking rubber, contacts with cavity, and is not high to the slightly degree of making and the required precision in hole, is difficult for scratching cavity when product is installed.
2, to the requirement of axle
The present embodiment oil sealing is two frame design, to the roughness of axle require greater than 3.2 can, an axle surface need not be ground.
3, to the requirement of working environment
The oil sealing of present embodiment has anti-lip care (3 road), prevents general dust, muddy water and medium pollution and the intrusion of extraneous foul, has good sealing effect;
The oil sealing of present embodiment can both satisfy the hole and the requirement of axle; Environmental characteristic for wheel limit oil sealing; Working life, the anti-aspect performances such as general and medium pollution and maintenance service that; When common oil sealing adopts old way not solve, generally can use the oil sealing of present embodiment to go to solve, and need not change cavity.
4, maintain and replace
The oil sealing of present embodiment can prolong the service cycle of work in maintenance with when changing, axial plane is machining again, the detachable repeated use.
Claims (5)
1. engineering machinery is taken turns the limit oil sealing; Comprise skeleton and attached to the rubbery sealed body on the skeleton; It is characterized in that said skeleton adopts two skeletal structures; Comprise with the inner frame (4) of axle interference fit and with the outer skeleton (7) of cavity interference fit; Said rubbery sealed body surrounds between outer skeleton (7) and the inner frame (4), and constitutes maze-type structure through the anti-lip care (1) in first road, the anti-lip care (2) in second road, the anti-lip care (3) in the 3rd road and the main lip (5) that its outer surface is convexly equipped with.
2. according to the said engineering machinery wheel of claim 1 limit oil sealing; The longitudinal cross-section that it is characterized in that said inner frame (4) is " " " shape; the longitudinal cross-section of outer skeleton 7 is shaped as that top by " L " shape and two shapes of " Z " shape links together and the shape formed, and " " of inner frame (4) " the shape horizontal edge places the top of " L " shape horizontal edge of outer skeleton (7), the bottom on " Z " shape lower horizontal limit.
3. according to the said engineering machinery wheel of claim 1 limit oil sealing; It is characterized in that the anti-lip care (2) in the anti-lip care (1) in said first road and second road works " " of being located at inner frame (4) " free end of shape horizontal edge, and simultaneously and two axial seals of outer skeleton (7) formation.
4. according to the said engineering machinery wheel of claim 1 limit oil sealing, it is characterized in that said main lip (5) binds round the inboard of being located at inner frame (4) by self-tightening spring (6), its underpart is provided with being located at inner frame (4) with the anti-lip care (3) in the 3rd inboard road.
5. according to the said engineering machinery wheel of claim 1 limit oil sealing, it is characterized in that the side that said inner frame (4) cooperates with axle is provided with the rubber layer with ripple convexity, the lateral parts that said outer skeleton (7) cooperates with cavity is provided with rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202437185U CN202203403U (en) | 2011-07-12 | 2011-07-12 | Oil seal for wheel edge of engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202437185U CN202203403U (en) | 2011-07-12 | 2011-07-12 | Oil seal for wheel edge of engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202203403U true CN202203403U (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202437185U Expired - Fee Related CN202203403U (en) | 2011-07-12 | 2011-07-12 | Oil seal for wheel edge of engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202203403U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291933A (en) * | 2013-06-21 | 2013-09-11 | 吉长宏 | Mud-water-proof oil seal |
| CN103644304A (en) * | 2013-12-10 | 2014-03-19 | 四川诺成航空橡塑密封有限责任公司 | Lip-shaped labyrinth seal ring with L-shaped metallic framework and U-shaped metallic framework reversely combined |
| CN106321846A (en) * | 2016-11-10 | 2017-01-11 | 昆山健博密封件科技有限公司 | Double framework oil seal part |
-
2011
- 2011-07-12 CN CN2011202437185U patent/CN202203403U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291933A (en) * | 2013-06-21 | 2013-09-11 | 吉长宏 | Mud-water-proof oil seal |
| CN103644304A (en) * | 2013-12-10 | 2014-03-19 | 四川诺成航空橡塑密封有限责任公司 | Lip-shaped labyrinth seal ring with L-shaped metallic framework and U-shaped metallic framework reversely combined |
| CN106321846A (en) * | 2016-11-10 | 2017-01-11 | 昆山健博密封件科技有限公司 | Double framework oil seal part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20130712 |