CN202251951U - Sealing structure of floating seal cover - Google Patents
Sealing structure of floating seal cover Download PDFInfo
- Publication number
- CN202251951U CN202251951U CN2011202819705U CN201120281970U CN202251951U CN 202251951 U CN202251951 U CN 202251951U CN 2011202819705 U CN2011202819705 U CN 2011202819705U CN 201120281970 U CN201120281970 U CN 201120281970U CN 202251951 U CN202251951 U CN 202251951U
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- floating
- capping
- shaft part
- floating capping
- float grease
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Abstract
The utility model discloses a sealing structure of a floating seal cover and is used for simplifying installation elements of the sealing structure of the floating seal cover and improving the reliability of the sealing structure of the floating seal cover. According to the technical scheme provided by the utility model, the structure comprises a floating seal assembly, an outer floating sealing cover and a centre shaft, wherein the center shaft comprises a first shaft section and a second shaft section; the diameter of the second shaft section is larger than the diameter of the first shaft section; the floating seal assembly is sleeved on the first shaft section; the outer floating seal cover is sleeved on the second shaft section; the outer floating seal cover is in interference fit with the second shaft section; and the outer floating seal cover presses an O-shaped seal ring at one side of the floating seal assembly. By adoption of the scheme provided by the utility model, the failure rate of drag chain wheels, thrust wheels and guide wheels in a crawler-type machine can be reduced.
Description
Technical field
The utility model relates to technical field of engineering machinery, relates in particular to a kind of floating capping sealing configuration.
Background technique
The guide wheel of caterpillar machinery, holder sprocket wheel, track roller use float grease seal that the lubricant oil in the seal chamber is carried out mechanical seal usually at present.See also Fig. 1, the nitrile butadiene rubber O-ring seals 102 that the float grease seal ring 101 that the float grease seal assembly comprises the pair of metal material and a pair of and float grease seal ring 101 are supporting.101 liang of rings of float grease seal ring are close to each other, and veneer is a seal face, and two O-ring seals 102 are enclosed within respectively on two float grease seal rings 101.O-ring seals 102 receives floating capping axial compression and is out of shape, and produces the pressure to float grease seal ring 101 seal faces.Along with the uniform wear of seal face, this elastic potential energy that is stored by O-ring seals progressively discharges, thereby plays the nose balance effect, makes sealing surface can keep good applying.During work, a float grease seal ring rotates with wheel body, and another relative central shaft is static.
The float grease seal structure comprises that float grease seal assembly, central shaft and float grease seal assembly both sides float capping; Floating capping respectively has the floating sealing groove of placing float grease seal one side; Interior floating capping is fixed on the wheel body or directly usually and on wheel body, processes, and floating outward capping is mounted on the central shaft through machinery.
For realizing the static relatively of outer floating head and central shaft, use the axially locating back-up ring to carry out axially locating and carry out radial location in the existing technology with use radial location pin.In addition, the joint of floating outward capping endoporus and central shaft is left the gap usually, for preventing that leakage of oil from need increase O shape circle and sealing.
See also Fig. 2, floating capping 201 in the holder chain sprocket structure comprises, float grease seal assembly 202, floating capping 203, O shape circle 204, axially locating back-up ring 205, central shaft 206 and radial location pin 207 outward.Should interior floating capping 201 directly be processed on the wheel body, and be enclosed within on the central shaft 206.Structure such as Fig. 1 of float grease seal assembly 202 are said; Float grease seal assembly 202, floating capping 203 outward also are enclosed within on the central shaft 206; These float grease seal assembly 202 1 sides are in the interior floating sealing groove of interior floating capping 201; The outer floating sealing groove of floating capping 202 outside opposite side then places, promptly float grease seal assembly 202 is arranged in floating capping 201 and floats the cavity that capping 203 is combined into outward.Be processed with O shape ring recess and axially locating circlip groove on the central shaft 206; Outer floating capping 203 endoporus also are processed with the axially locating circlip groove; Axially locating back-up ring 205 inner rings tightly are enclosed within on the axially locating circlip groove of central shaft 206; The outer ring embeds in the axially locating circlip groove of outer floating capping 203, reaches the effect of externally floating capping 203 axially locating; O shape circle 204 tightly is enclosed within on the O shape ring recess and closely contacts with outer floating capping 203 endoporus, reaches the effect of the outer floating capping 203 of sealing.Outer floating capping 203 also is processed with radial location sheath hole, through inserting radial location sheath 207, reaches the effect of externally floating capping 203 radial locations.
The sealing configuration and the said structure of conventional bogie wheel and guide wheel are similar.
But; Floating capping sealing configuration in the said structure has used O shape circle, axially locating back-up ring and three parts of radial location sheath; Also process axially locating circlip groove on O shape ring recess, the central shaft, the axially locating circlip groove on the floating capping endoporus and radial location sheath hole working position everywhere outward; As long as arbitrary place had an accident and all will influence whole floating capping sealing configuration during these three parts were carefully located with working position everywhere seven place's structures altogether, thereby caused holding in the palm in this caterpillar machinery sprocket wheel, track roller and guide wheel cisco unity malfunction.
The model utility content
In view of this, the utility model provides a kind of floating capping sealing configuration, is used to simplify the assembly and the correlation step of floating capping sealing configuration, improves the reliability of floating capping sealing configuration, reduces the rate of fault of caterpillar machinery.
A kind of floating capping sealing configuration comprises float grease seal assembly, floating capping and central shaft outward;
Said central shaft comprises first shaft part and second shaft part, and the diameter of said second shaft part is greater than the diameter of said first shaft part;
Said float grease seal assembly is enclosed within on said first shaft part; Said outer floating capping is enclosed within on said second shaft part, is interference fit between said outer floating capping and said second shaft part; Said outer floating capping compresses the O-ring seals of said float grease seal assembly one side.
Preferably, floating capping in floating capping sealing configuration further comprises, said interior floating capping is enclosed within on said first shaft part, compresses the O-ring seals of said float grease seal assembly opposite side.
Can find out from above technological scheme, the utlity model has following advantage:
Outer floating capping through installing with interference fit replaces the outer floating capping with the existing technology installation; Having saved in the above-mentioned existing technology altogether seven place's structures carefully locates; Thereby the assembly and the correlation step of floating capping sealing configuration have been simplified; Therefore the factor that causes restricting the reliability of said floating capping sealing configuration reduces, and has improved the reliability of floating capping sealing configuration, and has reduced the rate of fault of holding in the palm sprocket wheel, track roller and guide wheel in the caterpillar machinery.
Description of drawings
Fig. 1 is an existing technology float grease seal section of structure;
Fig. 2 is existing technology holder sprocket wheel and floating capping sealing configuration sectional drawing thereof;
Fig. 3 is the utility model holder sprocket wheel and floating capping sealing configuration two dimension explosive view thereof;
Fig. 4 is the utility model holder sprocket wheel and floating capping sealing configuration sectional drawing thereof;
Fig. 5 is the utility model track roller and floating capping sealing configuration sectional drawing thereof;
Fig. 6 is the utility model guide wheel and floating capping sealing configuration sectional drawing thereof.
Embodiment
The utility model embodiment provides a kind of floating capping sealing configuration, is used to replace floating capping sealing configuration of the prior art.Only need process on this structure centre axle with outer and float capping endoporus coupling and cooperate annulus, just can reach the purpose of the reliability that improves floating capping sealing configuration.Be elaborated below in conjunction with Figure of description.
Seeing also Fig. 3, is the inboard with holder sprocket wheel wheel body center, and this holder sprocket wheel and floating capping sealing configuration thereof comprise: wheel body 301, interior floating capping 3011, float grease seal assembly 302, floating outward capping 303 and central shaft 304.
Wherein, interior floating capping 3011 directly processes in wheel body 301 outer ends, in the embodiment of back, will explain, in other was used, interior floating capping can also be independently parts, is fixed on the outer end of other kind wheel body through the mode of bolt.
The described float grease seal structure of float grease seal assembly 302 structures such as Fig. 1, the nitrile butadiene rubber O-ring seals 102 that the float grease seal ring 101 that comprises the pair of metal material and a pair of and float grease seal ring 101 are supporting.101 liang of rings of float grease seal ring are close to each other, and veneer is a seal face, and two O-ring seals 102 are enclosed within respectively on two float grease seal rings 101.O-ring seals 102 receives floating capping axial compression and is out of shape, and produces the pressure to float grease seal ring 101 seal faces.Along with the uniform wear of seal face, this elastic potential energy that is stored by O-ring seals progressively discharges, thereby plays the nose balance effect, makes sealing surface can keep good applying.During work, a float grease seal ring rotates with wheel body, and another relative central shaft is static.
In the present embodiment, the concrete implementation of interference fit between second shaft part 3042 and the outer floating capping 303 is:
The diameter of second shaft part 3042 is greater than the diameter of first shaft part 3041 and outer floating capping 303 endoporus; Second shaft part 3042 than the part of first shaft part, 3041 radial protrusions for cooperating annulus, central shaft and outer floating capping through this cooperations annulus with should outside float the endoporus of capping interference be connected the realization interference fit.Said interference fit is through press-fiting or the hot charging mode is installed.Press-fiting is the pressure assembling, is meant the assembly process that two parts with magnitude of interference cooperation is pressed onto cooperation position, is meant in this programme that pressing machine is pressed onto the cooperation annulus on second shaft part 3042 cooperation position of outer floating capping 303 endoporus; Hot charging is meant that externally floating capping 303 heats; Using principle of expanding with heat and contracting with cold makes its endoporus be a bit larger tham the diameter of second shaft part 3042; To float capping 303 endoporus then outward assembles with the annulus that cooperates on second shaft part 3042 at once; Perhaps second shaft part 3042 is cooled off, use principle of expanding with heat and contracting with cold and make cooperation circle diameter on it, cooperation annulus on second shaft part 3042 and outer floating capping 303 endoporus are assembled then at once less than the diameter of outer floating capping 303 endoporus.After treating that temperature is recovered normally, second shaft part 3042 realizes promptly that with outer floating capping 303 interference is connected.Aforementioned structure is through the connection of interference fit; Second shaft part 3042 is fixed together with outer floating capping 303; Can maintain its axial and radial position; Through the decrement that the position can also guarantee the O type circle of float grease seal assembly 302 that is pressed into of floating capping 303 outside adjusting, therefore can prevent relatively rotating of outer floating capping 303 and central shaft 304, interference connects the leakage of oil that has also prevented outer floating capping 303 endoporus places.
Employing press-fits or holder sprocket wheel and the floating capping sealing configuration thereof of hot charging mode after installing referring to Fig. 4; When whole holder sprocket wheel of present embodiment and the work of floating capping sealing configuration thereof; Wheel body 301 rotations drive float grease seal assembly 302 inboard floating sealing rings simultaneously and rotate together; And floating outward capping 303 is static relatively because of interference and central shaft 304, so float grease seal assembly 302 outside floating sealing rings are also static relatively with central shaft 304.So just guaranteed that relative movement takes place between the inboard floating sealing ring of float grease seal assembly 302 and outside floating sealing ring.
Present embodiment replaces the outer floating capping with the existing technology installation through the outer floating capping of installing with interference fit; Having saved in the above-mentioned existing technology altogether seven place's structures carefully locates; Thereby the assembly and the correlation step of floating capping sealing configuration have been simplified; Therefore the factor that causes restricting the reliability of said floating capping sealing configuration reduces, and has improved the reliability of floating capping sealing configuration, and has reduced the rate of fault of holding in the palm sprocket wheel, track roller and guide wheel in the caterpillar machinery.
The utility model embodiment also provides the floating capping sealing configuration that can be applied to track roller; See also Fig. 5; With track roller wheel body center is the inboard, and this track roller and floating capping sealing configuration thereof comprise: wheel body 501, interior floating capping 502; Float grease seal assembly 503, floating outward capping 504 and central shaft 505.
The described float grease seal structure of float grease seal assembly 503 structures such as Fig. 1, the nitrile butadiene rubber O-ring seals 102 that the float grease seal ring 101 that comprises the pair of metal material and a pair of and float grease seal ring 101 are supporting.101 liang of rings of float grease seal ring are close to each other, and veneer is a seal face, and two O-ring seals 102 are enclosed within respectively on two float grease seal rings 101.O-ring seals 102 receives floating capping axial compression and is out of shape, and produces the pressure to float grease seal ring 101 seal faces.Along with the uniform wear of seal face, this elastic potential energy that is stored by O-ring seals progressively discharges, thereby plays the nose balance effect, makes sealing surface can keep good applying.During work, a float grease seal ring rotates with wheel body, and another relative central shaft is static.
The track roller two ends all are provided with floating capping sealing configuration; The floating capping sealing configuration in a place is different with having only in holder sprocket wheel and the floating capping sealing configuration thereof among first embodiment; The floating capping sealing configuration at its two ends is the same, and the interior floating capping 502 of this track roller and floating capping sealing configuration thereof is independently parts, is fixed on the outer end of wheel body 501 through the mode of bolt; Other parts are the same with the parts of same names among first embodiment, and its compound mode and linkage structure are too.
The utility model embodiment also provides the floating capping sealing configuration that can be applied to guide wheel; See also Fig. 6; With guide wheel wheel body center is the inboard, and this guide wheel and floating capping sealing configuration thereof comprise: wheel body 601, interior floating capping 602; Float grease seal assembly 603, floating outward capping 604 and central shaft 605.
The described float grease seal structure of float grease seal assembly 603 structures such as Fig. 1, the nitrile butadiene rubber O-ring seals 102 that the float grease seal ring 101 that comprises the pair of metal material and a pair of and float grease seal ring 101 are supporting.101 liang of rings of float grease seal ring are close to each other, and veneer is a seal face, and two O-ring seals 102 are enclosed within respectively on two float grease seal rings 101.O-ring seals 102 receives floating capping axial compression and is out of shape, and produces the pressure to float grease seal ring 101 seal faces.Along with the uniform wear of seal face, this elastic potential energy that is stored by O-ring seals progressively discharges, thereby plays the nose balance effect, makes sealing surface can keep good applying.During work, a float grease seal ring rotates with wheel body, and another relative central shaft is static.
The guide wheel two ends all are provided with floating capping sealing configuration; The floating capping sealing configuration in a place is different with having only in holder sprocket wheel and the floating capping sealing configuration thereof among first embodiment; The floating capping sealing configuration at its two ends is the same, and the interior floating capping 602 of this guide wheel and floating capping sealing configuration thereof is independently parts, is fixed on the outer end of wheel body 601 through the mode of bolt; Other parts are the same with the parts of same names among first embodiment, and its compound mode and linkage structure are too.
More than a kind of floating capping sealing configuration that the utility model provided has been carried out detailed introduction; For one of ordinary skill in the art; Thought according to the utility model embodiment; The part that on embodiment and application area, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (5)
1. a floating capping sealing configuration is characterized in that, comprising: float grease seal assembly, floating capping and central shaft outward;
Said central shaft comprises first shaft part and second shaft part, and the diameter of said second shaft part is greater than the diameter of said first shaft part;
Said float grease seal assembly is enclosed within on said first shaft part; Said outer floating capping is enclosed within on said second shaft part, is interference fit between said outer floating capping and said second shaft part; Said outer floating capping compresses the O-ring seals of said float grease seal assembly one side.
2. floating capping sealing configuration according to claim 1 is characterized in that,
Floating capping in said floating capping sealing configuration further comprises; Floating capping is enclosed within on said first shaft part in said, compresses the O-ring seals of said float grease seal assembly opposite side.
3. floating capping sealing configuration according to claim 2 is characterized in that,
Floating capping directly processes on wheel body in said;
Perhaps,
Floating capping is through being bolted on the wheel body in said.
4. according to each described floating capping sealing configuration in the claim 1 to 3, it is characterized in that,
Said central shaft further comprises the 3rd shaft part, and said the 3rd shaft part one end links to each other with said second shaft part.
5. floating capping sealing configuration according to claim 4 is characterized in that,
Said central shaft is connected with car body through said the 3rd shaft part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202819705U CN202251951U (en) | 2011-08-04 | 2011-08-04 | Sealing structure of floating seal cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202819705U CN202251951U (en) | 2011-08-04 | 2011-08-04 | Sealing structure of floating seal cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251951U true CN202251951U (en) | 2012-05-30 |
Family
ID=46113194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202819705U Expired - Fee Related CN202251951U (en) | 2011-08-04 | 2011-08-04 | Sealing structure of floating seal cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202251951U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253311A (en) * | 2013-05-17 | 2013-08-21 | 泉州市盛德机械发展有限公司 | Structure improvement of supporting chain wheel assembly of crawler type excavator |
| CN109606512A (en) * | 2019-01-10 | 2019-04-12 | 合肥晟泰克旋压科技有限公司 | A kind of thrust wheel packaging technology |
-
2011
- 2011-08-04 CN CN2011202819705U patent/CN202251951U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253311A (en) * | 2013-05-17 | 2013-08-21 | 泉州市盛德机械发展有限公司 | Structure improvement of supporting chain wheel assembly of crawler type excavator |
| CN103253311B (en) * | 2013-05-17 | 2016-05-11 | 泉州市盛德机械发展有限公司 | The architecture advances of the holder sprocket assemblies of crawler-mounted excavator |
| CN109606512A (en) * | 2019-01-10 | 2019-04-12 | 合肥晟泰克旋压科技有限公司 | A kind of thrust wheel packaging technology |
| CN109606512B (en) * | 2019-01-10 | 2020-10-02 | 合肥晟泰克旋压科技有限公司 | Thrust wheel assembling process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20160804 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |