CN102410370B - Shaft seal structure and electromagnetic brake - Google Patents
Shaft seal structure and electromagnetic brake Download PDFInfo
- Publication number
- CN102410370B CN102410370B CN201110319478.7A CN201110319478A CN102410370B CN 102410370 B CN102410370 B CN 102410370B CN 201110319478 A CN201110319478 A CN 201110319478A CN 102410370 B CN102410370 B CN 102410370B
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- CN
- China
- Prior art keywords
- seal ring
- sealing structure
- axle sealing
- push rod
- axle
- 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.)
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Links
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 62
- 230000008961 swelling Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 230000001050 lubricating effect Effects 0.000 claims description 8
- 239000004519 grease Substances 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Sealing Devices (AREA)
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 the electromagnetic brake of a kind of axle sealing structure and this axle sealing structure of use.
Background technique
In field of sealing technology, very general for the sealing of axle, there is multiple effective seal means.But these effective means focus mostly in the sealing to stationary axle, the sealing of the axle taking regular exercise for needs, rare effective means in prior art.For example, in car dumper system, the shunter reductor braking device commonly used (as the French production model electromagnetic brake that is COLIPE-645), the occasion of this type of break work mostly is as the outdoor poor occasion of the working environments such as 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 cannot be fixed (sealing mounting point is limited) on electromagnetic driver housing, and move with push rod shaft, separate and cause in housing, cause push rod seal to lose efficacy, in addition, often occur electromagnetic driver at work because of water inlet, enter powder and damage, can not ensure the normal operation of equipment.
Be similar to above-mentioned shaft sealing situation also comparatively common at other field, therefore need a kind of new axle sealing structure effectively to realize Axle Parts, especially often need the sealing of movable Axle Parts.
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 complete the sealing of axle.
Another object of the present invention is to provide 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, provide a kind of axle sealing structure, described axle sealing structure comprises housing and the first seal ring, described housing has through hole, and the hypomere of this through hole is formed as annular recess, and described the first seal ring is fixed in described annular recess.
Preferably, described the first seal ring is rubber ring, and described the first seal ring swelling pressure is in described annular recess.
Preferably, the inwall of described the first seal ring has annular groove.
Preferably, described the first seal ring comprises the first half and Lower Half, and the described first half and described Lower Half are fixed together or are structure as a whole.
Preferably, the ratio of the degree of depth of described annular groove and the height of described annular groove is 1/1.5～1/1.9.
Preferably, described axle sealing structure also comprises the second seal ring, and this second seal ring is fixed on the epimere of described through hole.
Preferably, described the second seal ring is elastic circular ring, and described the second seal ring swelling pressure is at the epimere of described through hole.
Preferably, be outward extended with annular protrusion from one end of described the second seal ring, the external diameter of this annular protrusion equals the external diameter of described the first seal ring, and described annular protrusion is contained in described annular recess upper end.
Preferably, the external diameter of described push rod shaft is than the large 0.01mm～0.03mm of the internal diameter of described the first seal ring.
According to a further aspect in the invention, provide a kind of electromagnetic brake, this electromagnetic brake comprises push rod shaft and electromagnetic mechanism, in the ingress of described electromagnetic mechanism, axle sealing structure provided by the invention is installed, and described push rod shaft is through described axle sealing structure setting.
Preferably, the external diameter of described push rod shaft equals the internal diameter of described the first seal ring.
By technique scheme, axle sealing structure provided by the invention rational in infrastructure, can effectively complete the sealing of axle, and then make electromagnetic brake provided by the invention can effectively complete the sealing of push rod shaft.
Other features and advantages of the present invention are described in detail the embodiment part subsequently.
Brief description of the drawings
Accompanying drawing is to be used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.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 in Fig. 1;
Fig. 3 is the exploded perspective sectional view along the axle sealing structure of the line A-A intercepting in 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 ring 4 through holes
5 push rod shaft 6 electromagnetic mechanisms
21 first half 22 Lower Halves
23 annular groove 31 annular protrusions
41 annular recess
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the present invention, is not limited to the present invention.
In the present invention, in the situation that not doing contrary explanation, the noun of locality of use is as " upper and lower, " etc., normally with the direction definition shown in Fig. 2 to Fig. 4.
As shown in Figure 1 to Figure 3, the invention provides a kind of axle sealing structure, this axle sealing structure comprises housing 1 and the first seal ring 2, and wherein, housing 1 has through hole 4, and the hypomere of this through hole 4 is formed as annular recess 41, the first seal rings 2 and is fixed in annular recess 41.
In technique scheme; due to the formation of annular recess 41; make the hypomere diameter of through hole 4 be greater than the diameter of through hole 4 epimeres; and the first seal ring 2 is fixed in annular recess 41; make the first seal ring can better bring into play seal action, especially can produce more reliable and more stable sealing to the axle of frequent activity, therefore; axle sealing structure provided by the invention rational in infrastructure, can effectively complete the sealing of axle.
As shown in Figures 2 and 3, the method that the first seal ring 2 is fixed in annular recess 41 has a variety of, as bonding, clamping etc., convenient in order to ensure cleaning maintenance of the present invention, preferably, the first seal ring 2 is that rubber ring (preferably manufacture by nitrile rubber material, and inner band steel lining is to gain in strength), the first seal ring 2 swelling pressures are in annular recess 41.That is, by the elastic telescopic performance of rubber, by the first seal ring 2 swelling pressures in annular recess, and can dismantle and clean or change, in addition, the first seal ring also can adopt other shapes beyond annulus, as long as meet object of the present invention, do not do too much restriction.
In order further to optimize the present invention, need to stress to be, the first seal ring provided by the invention has self-lubricating function, and preferably, the inwall of the first seal ring 2 has annular groove 23.
Wherein, owing to being provided with annular groove 23 on the first seal ring 2 inwalls, therefore before the first seal ring 23 is installed on housing 1, can in annular groove 23, pile lubricating grease, thereby the first seal ring 23 in use, can realize selflubricating, increase sealing effect and improved again the life-span own.Be specially adapted to the sealing of often movable telescopic shaft base part.
In addition, according to existing processing conditions and technique, manufacture for convenient, preferably, the first seal ring 2 comprises the first half 21 and Lower Half 22, and the first half 21 and Lower Half 22 are fixed together, complete fixing method have multiple, as bonding, welding etc.Or by mould manufacturing method, the first half 1 and Lower Half 2 also can be structure as a whole.
In order to ensure 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 " highly " and " degree of depth " are the direction definition with respect to the housing through-hole 4 after installing as shown in Figure 2 herein, " highly " be the length of annular groove 23 in the direction of through hole 4, " degree of depth " is the length of annular groove 23 in the direction perpendicular to through hole 4.
In order further to optimize the present invention, ensure stability and the guidance quality of Axle Parts in enclosure interior, preferably, axle sealing structure provided by the invention also comprises the second seal ring 3, this second seal ring 3 is fixed on the epimere of through hole 4.Through hole 4 diameters that are fixed on housing are less than the part of annular recess 41, by increasing by the second seal ring 3, can complete more stable more effectively sealing to axle.
Wherein, the method that the second seal ring 3 is fixed on through hole 4 epimeres also has multiple, such as bonding, clamping etc., and identical with the first seal ring 2, preferably, the second seal ring 3 is elastic circular ring, the second seal ring 3 swelling pressures are at the epimere of through hole 4.By the elastic telescopic performance of the second seal ring 3 own, swelling pressure is at the epimere of through hole 4.Consider and need and mobilizable Axle Parts close contact, to ensure stability and the guidance quality of Axle Parts in enclosure interior, what therefore with the first seal ring was different is, the material of manufacturing the second seal ring not only will have elastic performance and also will have wear resistance, therefore, the second seal ring is preferably the polyurethane material of the title with " abrasive rubber ", and polyurethane elastomer can have higher elasticity and intensity, excellent wear resistance, oil resistance, fatigue resistance and anti-vibration resistance in wider hardness range.In order further to ensure the life-span preferably to adopt polyurethane self lubricating material to manufacture the second seal ring 3.
In order to ensure the rational in infrastructure of axle sealing structure provided by the invention, preferably, be outward extended with annular protrusion 31 from one end of the second seal ring 3, the external diameter of this annular protrusion 31 equals the external diameter of the first seal ring 2, to make, annular protrusion 31 is contained in annular recess 41 upper ends.
In actual use, first the epimere at through hole 4 by the second seal ring 3 swelling pressures, annular protrusion 31 can with the first the same top that is contained in annular recess 41 of seal ring 2, and then by the first seal ring 2 swelling pressures of piling lubricating grease in annular recess 41, as shown in Figures 2 and 3, the first seal ring 2 is below the second seal ring.In addition, for making the first seal ring 2 and the second seal ring 3 simultaneously to Axle Parts performance seal action, the internal diameter of the second seal ring 3 equals the internal diameter of the first seal ring 1.What those skilled in the art can understand is, said " internal diameter " is the diameter of the first seal ring 2 and the second seal ring 3 and Axle Parts contact segment herein, not the internal diameter of annular groove 23 for the first Sealing 2, but the diameter of the upper end hole of the first half 21 and 22 times stomidiums of Lower Half.
To sum up, axle sealing structure rational in infrastructure that the present invention improves, has carried out the wearing and tearing of sealing and associated components to axle low effectively, and the life-span is high, has higher practicability and economic value.
According to a further aspect in the invention, as shown in Figure 4, the present invention is a kind of electromagnetic brake also, this electromagnetic brake comprises push rod shaft 5 and electromagnetic mechanism 6 (in figure for schematically illustrating), be provided with in the ingress of electromagnetic mechanism 6 that the present invention improves axle sealing structure, push rod shaft 5 is through axle sealing structure setting.
Wherein, push rod shaft 5 is often to need movable Axle Parts, electromagnetic mechanism 6 is for needing the region of sealing, in electromagnetic brake in the prior art, push rod shaft 5 is carried out to Sealing and independently exist, with the activity of push rod shaft 5, activity makes seal failure in meeting, the impurity such as a large amount of coal dusts, rainwater are entered in electromagnetic mechanism, therefore greatly reduce life-span and the working efficiency of electromagnetic brake.Electromagnetic brake provided by the invention is in the ingress of electromagnetic mechanism 6, and the often region of activity of push rod shaft, has installed shaft sealer provided by the invention.Mounting type herein has multiple, preferably will on the outer surface of outer cover of axle sealing structure, screw thread be set, and is installed to the ingress of electromagnetic mechanism 6 by screw-thread fit.Therefore, electromagnetic brake provided by the invention can effectively complete the sealing to push rod shaft.
In order to ensure sealing effect, preferably the first seal ring and the second seal ring and push rod shaft are that tight power coordinates simultaneously, and the external diameter of push rod shaft 5 is than the large 0.01mm～0.03mm of the internal diameter of the first seal ring 1.Because the internal diameter of the second seal ring 3 is identical with the internal diameter of the first seal ring 2, the present invention can complete sealing effect more effectively to push rod shaft 5.
In conjunction with a first aspect of the present invention, when push rod shaft 5 interior when movable at housing 1, because the endoporus of seal ring 2,3 has tight power of coordinating of 0.01mm～0.03mm with push rod shaft, so the lubricating grease in the second seal ring can be not excessive, lubricating grease is full of annular groove 3, form lubricant films and in reducing friction factor in push rod shaft 5 and the first seal ring 2 surface of contact, lubricating grease itself has also strengthened the booster action of sealing; The second seal ring adopts polyurethane self lubricating material to process, and can ensure push rod shaft 5 accurate location in axial sliding, the wearing and tearing can control push rod shaft 5 completely and mutually move with the second seal ring 3 time.In addition, the material of this second seal ring 3 is hard compared with the first seal ring 2, makes the second seal ring 3 easily remove the extraneous granular foreign material of push rod shaft 5, thus the working environment of protection the 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 a large amount of enterprises that use material electromagnetic brake have saved great amount of cost; and the manufacturing efficiency of enterprise is had to positive effect; except electromagnetic brake provided by the invention; the present invention can also be used for the multiple occasion that need to seal Axle Parts, is particularly used in the operational site that needs the often movable rugged environment such as Axle Parts and high dust.Therefore, the present invention has higher promotional value and practicability.
Below describe by reference to the accompanying drawings the preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive 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.
It should be noted that in addition, each concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can combine for fear of unnecessary repetition by any suitable mode, 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 various mode of execution of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (8)
1. an axle sealing structure, it is characterized in that, described axle sealing structure comprises housing (1) and the first seal ring (2), described housing (1) has through hole (4), the hypomere of this through hole (4) is formed as annular recess (41), described the first seal ring (2) is fixed in described annular recess (41), and the inwall of described the first seal ring (2) has annular groove (23), and this annular groove is piled lubricating grease in (23); Described axle sealing structure also comprises the second seal ring (3), this the second seal ring (3) is fixed on the epimere of described through hole (4), described the first seal ring (2) is in the below of described the second seal ring (3), be outward extended with annular protrusion (31) from one end of described the second seal ring (3), the external diameter of this annular protrusion (31) equals the external diameter of described the first seal ring (2), and described annular protrusion (31) is contained in described annular recess (41) upper end; More described first seal ring of material (2) of described the second seal ring (3) hard.
2. axle sealing structure according to claim 1, is characterized in that, described the first seal ring (2) is rubber ring, and described the first seal ring (2) swelling pressure is in described annular recess (41).
3. axle sealing structure according to claim 1, is characterized in that, described the first seal ring (2) comprises the first half (21) and Lower Half (22), and the described first half (21) and described Lower Half (22) are fixed together or are structure as a whole.
4. axle sealing structure according to claim 1, is characterized in that, the ratio of the height of the degree of depth of described annular groove (23) and described annular groove (23) is 1/1.5～1/1.9.
5. axle sealing structure according to claim 1, is characterized in that, described the second seal ring (3) is elastic circular ring, and described the second seal ring (3) swelling pressure is at the epimere of described through hole (4).
6. axle sealing structure according to claim 1, is characterized in that, the internal diameter of described the second seal ring (3) equals the internal diameter of described the first seal ring (1).
7. an electromagnetic brake, this electromagnetic brake comprises push rod shaft (5) and electromagnetic mechanism (6), it is characterized in that, the wherein axle sealing structure described in any one according to claim 1-6 is installed in the ingress of described electromagnetic mechanism (6), and described push rod shaft (5) is through described axle sealing structure setting.
8. electromagnetic brake according to claim 7, is characterized in that, the external diameter of described push rod shaft (5) is than the large 0.01mm～0.03mm of internal diameter of described the 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 CN102410370A (en) | 2012-04-11 |
| CN102410370B true CN102410370B (en) | 2014-10-29 |
Family
ID=45912607
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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812578B (en) * | 2019-02-26 | 2020-06-30 | 安徽沃尔顶密封工业有限公司 | Anti-aging O-shaped sealing ring and production method thereof |
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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102410370A (en) | 2012-04-11 |
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