CN102410370A - Shaft seal structure and electromagnetic brake - Google Patents
Shaft seal structure and electromagnetic brake Download PDFInfo
- Publication number
- CN102410370A CN102410370A CN2011103194787A CN201110319478A CN102410370A CN 102410370 A CN102410370 A CN 102410370A CN 2011103194787 A CN2011103194787 A CN 2011103194787A CN 201110319478 A CN201110319478 A CN 201110319478A CN 102410370 A CN102410370 A CN 102410370A
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- Prior art keywords
- seal ring
- sealing structure
- axle sealing
- push rod
- axle
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Abstract
The invention discloses a shaft seal structure. The shaft seal structure comprises a shell (1) and a first seal ring (2), wherein the shell (1) is provided with a through hole (4); the lower segment of the through hole (4) forms an annular concave part (41); and the first seal ring (2) is fixed in the annular concave part (41). The invention further provides an electromagnetic brake which comprises a push rod shaft (5) and an electromagnetic mechanism (6), wherein the inlet of the electromagnetic mechanism (6) is provided with the shaft seal structure provided by the invention, and the push rod shaft (5) passes through the shaft seal structure. The shaft seal structure provided by the invention has the advantages of reasonable structure and capability of effectively finishing shaft seal; and by adopting the shaft seal structure, the electromagnetic brake provided by the invention can effectively finish seal of the push rod shaft.
Description
Technical field
The present invention relates to field of sealing technology, particularly, relate to a kind of axle sealing structure and the electromagnetic brake that uses this axle sealing structure.
Background technique
In field of sealing technology, very general for the sealing of axle, multiple effective seal means have appearred.But these effective means focus mostly in the sealing to stationary axle, for needs take regular exercise the axle sealing, rare effective means in the existing technology.For example, in car dumper system, commonly used to the machine of shunting speed reducer braking device (like the French production model electromagnetic brake that is COLIPE-645), mostly the occasion of this type of break work is like the open-air relatively poor occasions of working environment such as the equipment of unloading coal.In actual use, because push rod shaft needs frequent movement, often contact with water with coal dust.In this case; The original push rod shaft sealing of this electromagnetic driver can't be fixed (the sealing mounting point is limited) on the electromagnetic driver housing, and moves with push rod shaft, separates and cause in housing; Cause push rod seal to lose efficacy; In addition, often occur electromagnetic driver at work because of water inlet, advance powder and damage, can not guarantee the normal operation of equipment.
It is also comparatively common at other field to be similar to above-mentioned shaft sealing situation, therefore needs a kind of new axle sealing structure to come effectively to realize the axle base part, especially often needs the sealing of movable axle base part.
Summary of the invention
An object of the present invention is to provide a kind of axle sealing structure, this axle sealing structure rational in infrastructure can effectively be accomplished the sealing of axle.
Another object of the present invention provides a kind of electromagnetic brake that uses axle sealing structure provided by the invention.
To achieve these goals, according to an aspect of the present invention, a kind of axle sealing structure is provided; Said axle sealing structure comprises the housing and first seal ring; Said housing has through hole, and the hypomere of this through hole forms annular recess, and said first seal ring is fixed in the said annular recess.
Preferably, said first seal ring is a rubber ring, and the said first seal ring swelling pressure is in said annular recess.
Preferably, the inwall of said first seal ring has annular groove.
Preferably, said first seal ring comprises the first half and Lower Half, and the said first half and said Lower Half are fixed together or are structure as a whole.
Preferably, the ratio of the height of the degree of depth of said annular groove and said annular groove is 1/1.5～1/1.9.
Preferably, said axle sealing structure also comprises second seal ring, and this second seal ring is fixed on the epimere of said through hole.
Preferably, said second seal ring is an elastic circular ring, and the said second seal ring swelling pressure is at the epimere of said through hole.
Preferably, be outward extended with annular protrusion from an end of said second seal ring, the external diameter of this annular protrusion equals the external diameter of said first seal ring, and said annular protrusion is contained in said annular recess upper end.
Preferably, the external diameter of said push rod shaft is than the big 0.01mm～0.03mm of internal diameter of said first seal ring.
According to a further aspect in the invention, a kind of electromagnetic brake is provided, this electromagnetic brake comprises push rod shaft and electromagnetic mechanism, in the ingress of said electromagnetic mechanism axle sealing structure provided by the invention is installed, and said push rod shaft is passed said axle sealing structure setting.
Preferably, the external diameter of said push rod shaft equals the internal diameter of said first seal ring.
Through technique scheme, axle sealing structure provided by the invention rational in infrastructure can effectively be accomplished the sealing of axle, and then made electromagnetic brake provided by the invention can effectively accomplish the sealing of push rod shaft.
Other features and advantages of the present invention will partly specify in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with following embodiment, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the plan view of axle sealing structure provided by the invention;
Fig. 2 is the three-dimensional cutaway view along the axle sealing structure of the line A-A intercepting among Fig. 1;
Fig. 3 is the exploded perspective sectional view along the axle sealing structure of the line A-A intercepting among Fig. 1;
Fig. 4 is the partial sectional view of electromagnetic brake provided by the invention.
Description of reference numerals
1 housing, 2 first seal rings
3 second seal rings, 4 through holes
5 push rod shaft, 6 electromagnetic mechanisms
21 first halves, 22 Lower Halves
23 annular grooves, 31 annular protrusions
41 annular recess
Embodiment
Be elaborated below in conjunction with the accompanying drawing specific embodiments of the invention.Should be understood that embodiment described herein only is used for explanation and explains the present invention, is not limited to the present invention.
In the present invention, under the situation of not doing opposite explanation, the noun of locality of use is like " upper and lower, " etc., normally with Fig. 2 to direction definition shown in Figure 4.
To shown in Figure 3, the present invention provides a kind of axle sealing structure like Fig. 1, and this axle sealing structure comprises the housing 1 and first seal ring 2, and wherein, housing 1 has through hole 4, and the hypomere of this through hole 4 forms annular recess 41, the first seal rings 2 and is fixed in the annular recess 41.
In technique scheme, because the formation of annular recess 41 makes the diameter of the hypomere diameter of through hole 4 greater than through hole 4 epimeres; And first seal ring 2 is fixed in the annular recess 41; Make first seal ring can better bring into play seal action, especially the axle to frequent activity can produce more reliable and more stable sealing, therefore; Axle sealing structure provided by the invention rational in infrastructure can effectively be accomplished the sealing of axle.
As shown in Figures 2 and 3, first seal ring 2 the methods in the annular recess 41 of being fixed on have a variety of, like bonding; Clamping etc.; Convenient in order to guarantee cleaning maintenance of the present invention, preferably, first seal ring 2 is a rubber ring (preferred nitrile rubber material manufacture; And inner band steel lining is to gain in strength), first seal ring, 2 swelling pressures are in annular recess 41.That is, through the elastic telescopic performance of rubber, with first seal ring, 2 swelling pressures in annular recess; And can dismantle and clean or change, in addition, first seal ring also can adopt other shapes beyond the annulus; As long as satisfy the object of the invention, do not do too much restriction.
In order further to optimize the present invention, need stress to be that first seal ring provided by the invention has self-lubricating function, promptly preferably, the inwall of first seal ring 2 has annular groove 23.
Wherein, Because first seal ring, 2 inwalls are provided with annular groove 23; Therefore before being installed to first seal ring 23 on the housing 1, can in annular groove 23, pile lubricating grease, thereby first seal ring 23 in use; Can realize selflubricating, promptly increase sealing effect and improved the life-span own again.Be specially adapted to the sealing of often movable telescopic shaft base part.
In addition, according to existing processing conditions and technology, make for ease, preferably, first seal ring 2 comprises the first half 21 and Lower Half 22, and the first half 21 is fixed together with Lower Half 22, accomplish fixed method have multiple, like bonding, welding etc.Perhaps, through mould manufacturing method, the first half 1 also can be structure as a whole with Lower Half 2.
In order to guarantee that grease can play positive lubrication in annular groove 23, preferably, the ratio of the height of the degree of depth of annular groove 23 and annular groove 23 is 1/1.5～1/1.7.Said here " highly " and " degree of depth " are the direction definition with respect to the housing through-hole after the installation as shown in Figure 24; " highly " be the length of annular groove 23 on the direction of through hole 4, " degree of depth " is annular groove 23 perpendicular to the length on the direction of through hole 4.
In order further to optimize the present invention, guarantee stability and the guidance quality of axle base part in enclosure interior, preferably, axle sealing structure provided by the invention also comprises second seal ring 3, this second seal ring 3 is fixed on the epimere of through hole 4.Promptly be fixed on the part of through hole 4 diameters of housing,, can accomplish more stable effective seal more axle through increasing by second seal ring 3 less than annular recess 41.
Wherein, that the method that second seal ring 3 is fixed on through hole 4 epimeres also has is multiple, for example bonding, clamping etc., and identical with first seal ring 2, preferably, second seal ring 3 is an elastic circular ring, and second seal ring, 3 swelling pressures are at the epimere of through hole 4.Promptly through the elastic telescopic performance of second seal ring 3 itself, swelling pressure is at the epimere of through hole 4.Considering needs closely to contact with mobilizable base part; To guarantee stability and the guidance quality of axle base part in enclosure interior; Therefore different with first seal ring is; The material of making second seal ring not only will have elastic performance and also will have wear resistance; Therefore, second seal ring is preferably the polyurethane material of the title with " abrasive rubber ", and polyurethane elastomer can have higher elasticity and intensity, excellent abrasive, oil resistance, fatigue resistance and anti-vibration resistance in the hardness range of broad.In order further to guarantee the life-span preferably to adopt the polyurethane self lubricating material to make second seal ring 3.
In order to guarantee the rational in infrastructure of axle sealing structure provided by the invention; Preferably, be outward extended with annular protrusion 31 from an end of second seal ring 3, the external diameter of this annular protrusion 31 equals the external diameter of first seal ring 2; So that annular protrusion 31 is contained in annular recess 41 upper ends.
In actual use; At first with the epimere of second seal ring, 3 swelling pressures at through hole 4; Annular protrusion 31 can with first seal ring, the 2 the same tops that are contained in annular recess 41; And then first seal ring, 2 swelling pressures that will pile lubricating grease are in annular recess 41, and promptly as shown in Figures 2 and 3, first seal ring 2 is below second seal ring.In addition, for making first seal ring 2 and second seal ring 3 simultaneously to axle base part performance seal action, the internal diameter of second seal ring 3 equals the internal diameter of first seal ring 1.Those skilled in the art can be understood that; Said here " internal diameter " is the diameter of first seal ring 2 and second seal ring 3 and axle base part contact segment; For first Sealing 2 is not to be the internal diameter of annular groove 23, but the diameter of the upper end hole of the first half 21 and 22 times stomidiums of Lower Half.
To sum up, the axle sealing structure that the present invention improves rational in infrastructure, it is low effectively axle have been carried out the wearing and tearing of sealing and associated components, and the life-span is high, has advantages of high practicability and economic value.
According to a further aspect in the invention; As shown in Figure 4; Also a kind of electromagnetic brake of the present invention; This electromagnetic brake comprises push rod shaft 5 and electromagnetic mechanism 6 (among the figure for schematically illustrating), be equipped with in the ingress of electromagnetic mechanism 6 the present invention's raising axle sealing structure, push rod shaft 5 is passed the axle sealing structure setting.
Wherein, push rod shaft 5 is often to need movable axle base part, and electromagnetic mechanism 6 is for needing the zone of sealing; In the electromagnetic brake in the prior art; Push rod shaft 5 is carried out Sealing independently exist, can activity with the activity of push rod shaft 5, make seal failure; Impurity such as a large amount of coal dusts, rainwater are got in the electromagnetic mechanism, therefore greatly reduce the life-span and the working efficiency of electromagnetic brake.Electromagnetic brake provided by the invention is in the ingress of electromagnetic mechanism 6, and promptly shaft sealer provided by the invention has been installed in the often movable zone of push rod shaft.The mounting type here has multiple, preferably on the outer surface of outer cover with axle sealing structure screw thread is set, and is installed to the ingress of electromagnetic mechanism 6 through screw-thread fit.Therefore, electromagnetic brake provided by the invention can effectively be accomplished the sealing to push rod shaft.
In order to guarantee sealing effect, preferred first seal ring and second seal ring and push rod shaft are that tight power cooperates simultaneously, and promptly the external diameter of push rod shaft 5 is than the big 0.01mm～0.03mm of internal diameter of first seal ring 1.Because the internal diameter of second seal ring 3 is identical with the internal diameter of first seal ring 2, the present invention can accomplish sealing effect more effectively to push rod shaft 5.
In conjunction with first aspect of the present invention; When push rod shaft 5 is movable in housing 1; Because of the endoporus of seal ring 2,3 has tight power of cooperating of 0.01mm～0.03mm with push rod shaft, so the lubricating grease in second seal ring can be not excessive, lubricating grease is full of annular groove 3; Form lubricant film and when reducing friction factor, lubricating grease itself has also strengthened the booster action of sealing at push rod shaft 5 and first seal ring, 2 surface of contact; Second seal ring adopts the polyurethane self lubricating material to process, and can guarantee push rod shaft 5 accurate location in axial sliding, the wearing and tearing in the time of controlling push rod shaft 5 fully and move each other with second seal ring 3.In addition, the material of this second seal ring 3 is hard than first seal ring 2, makes second seal ring 3 remove the extraneous granular foreign material of push rod shaft 5 easily, thereby protects the working environment of first seal ring 2, to reach good sealing effect.
The axle sealing structure that the application of the invention provides; The life-span of electromagnetic brake and working efficiency can significantly promote; For the enterprise of a large amount of materials used electromagnetic brakes has saved great amount of cost, and the manufacturing efficiency of enterprise there is positive effect, except electromagnetic brake provided by the invention; The present invention can also be used for the multiple occasion that need seal the axle base part, particularly is used in the operational site of rugged environment such as often needing movable axle base part and high dust.Therefore, the present invention has higher promotional value and practicability.
More than combine accompanying drawing to describe preferred implementation of the present invention in detail; But; The present invention is not limited to the detail in the above-mentioned mode of execution; In technical conceive scope of the present invention, can carry out multiple simple variant to technological scheme of the present invention, these simple variant all belong to protection scope of the present invention.
Need to prove in addition; Each concrete technical characteristics described in above-mentioned embodiment; Under reconcilable situation, can make up for fear of unnecessary repetition through any suitable manner, the present invention is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between the various mode of execution of the present invention, as long as it is without prejudice to thought of the present invention, it should be regarded as the disclosed content of the present invention equally.
Claims (11)
1. axle sealing structure; It is characterized in that said axle sealing structure comprises housing (1) and first seal ring (2), said housing (1) has through hole (4); The hypomere of this through hole (4) forms annular recess (41), and said first seal ring (2) is fixed in the said annular recess (41).
2. axle sealing structure according to claim 1 is characterized in that, said first seal ring (2) is a rubber ring, and said first seal ring (2) swelling pressure is in said annular recess (41).
3. axle sealing structure according to claim 1 is characterized in that, the inwall of said first seal ring (2) has annular groove (23).
4. axle sealing structure according to claim 3 is characterized in that, said first seal ring (2) comprises the first half (21) and Lower Half (22), and the said first half (21) and said Lower Half (22) are fixed together or are structure as a whole.
5. axle sealing structure according to claim 3 is characterized in that, the ratio of the height of the degree of depth of said annular groove (23) and said annular groove (23) is 1/1.5～1/1.9.
6. axle sealing structure according to claim 1 is characterized in that, said axle sealing structure also comprises second seal ring (3), and this second seal ring (3) is fixed on the epimere of said through hole (4).
7. axle sealing structure according to claim 6 is characterized in that, said second seal ring (3) is an elastic circular ring, and said second seal ring (3) swelling pressure is at the epimere of said through hole (4).
8. axle sealing structure according to claim 7; It is characterized in that; Be outward extended with annular protrusion (31) from an end of said second seal ring (3); The external diameter of this annular protrusion (31) equals the external diameter of said first seal ring (2), and said annular protrusion (31) is contained in said annular recess (41) upper end.
9. axle sealing structure according to claim 8 is characterized in that, the internal diameter of said second seal ring (3) equals the internal diameter of said first seal ring (1).
10. electromagnetic brake; This electromagnetic brake comprises push rod shaft (5) and electromagnetic mechanism (6); It is characterized in that; In the ingress of said electromagnetic mechanism (6) wherein any described axle sealing structure according to claim 1-9 is installed, said push rod shaft (5) is passed said axle sealing structure setting.
11. electromagnetic brake according to claim 10 is characterized in that, the external diameter of said push rod shaft (5) is than the big 0.01mm～0.03mm of internal diameter of said first seal ring (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110319478.7A CN102410370B (en) | 2011-10-19 | 2011-10-19 | Shaft seal structure and electromagnetic brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110319478.7A CN102410370B (en) | 2011-10-19 | 2011-10-19 | Shaft seal structure and electromagnetic brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102410370A true CN102410370A (en) | 2012-04-11 |
| CN102410370B CN102410370B (en) | 2014-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110319478.7A Active CN102410370B (en) | 2011-10-19 | 2011-10-19 | Shaft seal structure and electromagnetic brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102410370B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812578A (en) * | 2019-02-26 | 2019-05-28 | 安徽沃尔顶密封工业有限公司 | A kind of O-ring seal and its production method preventing aging |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1096169A2 (en) * | 1999-10-26 | 2001-05-02 | Meritor Heavy Vehicle Systems, LLC | Shaft seal for eccentric air brake lever |
| CN2608775Y (en) * | 2002-01-22 | 2004-03-31 | 于瑞文 | Simmer ring |
| CN101087970A (en) * | 2004-12-28 | 2007-12-12 | 伊格尔工业股份有限公司 | Shaft sealing device |
| CN201348002Y (en) * | 2008-12-09 | 2009-11-18 | 天津三英焊业股份有限公司 | Double-cylinder brake for welding material winding device |
| CN201461957U (en) * | 2009-06-18 | 2010-05-12 | 桐乡市华强密封件有限公司 | Axial sealing ring |
| CN102138021A (en) * | 2008-09-11 | 2011-07-27 | 丰田自动车株式会社 | Disc brake device |
| CN202381685U (en) * | 2011-10-19 | 2012-08-15 | 中国神华能源股份有限公司 | Shaft seal structure and electromagnetic brake |
-
2011
- 2011-10-19 CN CN201110319478.7A patent/CN102410370B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1096169A2 (en) * | 1999-10-26 | 2001-05-02 | Meritor Heavy Vehicle Systems, LLC | Shaft seal for eccentric air brake lever |
| CN2608775Y (en) * | 2002-01-22 | 2004-03-31 | 于瑞文 | Simmer ring |
| CN101087970A (en) * | 2004-12-28 | 2007-12-12 | 伊格尔工业股份有限公司 | Shaft sealing device |
| CN102138021A (en) * | 2008-09-11 | 2011-07-27 | 丰田自动车株式会社 | Disc brake device |
| CN201348002Y (en) * | 2008-12-09 | 2009-11-18 | 天津三英焊业股份有限公司 | Double-cylinder brake for welding material winding device |
| CN201461957U (en) * | 2009-06-18 | 2010-05-12 | 桐乡市华强密封件有限公司 | Axial sealing ring |
| CN202381685U (en) * | 2011-10-19 | 2012-08-15 | 中国神华能源股份有限公司 | Shaft seal structure and electromagnetic brake |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812578A (en) * | 2019-02-26 | 2019-05-28 | 安徽沃尔顶密封工业有限公司 | A kind of O-ring seal and its production method preventing aging |
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| Publication number | Publication date |
|---|---|
| CN102410370B (en) | 2014-10-29 |
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