CN203809681U - Combined type tooth-shaped sealing ring for railway vehicle flange - Google Patents
Combined type tooth-shaped sealing ring for railway vehicle flange Download PDFInfo
- Publication number
- CN203809681U CN203809681U CN201420210381.1U CN201420210381U CN203809681U CN 203809681 U CN203809681 U CN 203809681U CN 201420210381 U CN201420210381 U CN 201420210381U CN 203809681 U CN203809681 U CN 203809681U
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- China
- Prior art keywords
- ring
- inner ring
- rubber inner
- outer ring
- combined type
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- 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.)
- Expired - Lifetime
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- 238000007789 sealing Methods 0.000 title abstract description 15
- 229920001971 elastomer Polymers 0.000 claims abstract description 48
- 239000005060 rubber Substances 0.000 claims abstract description 48
- 229910052751 metal Inorganic materials 0.000 claims abstract description 32
- 239000002184 metal Substances 0.000 claims abstract description 32
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 5
- 239000007769 metal material Substances 0.000 claims abstract description 4
- 229920000459 Nitrile rubber Polymers 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Gasket Seals (AREA)
Abstract
The utility model discloses a combined type tooth-shaped sealing ring for a railway vehicle flange. The combined type tooth-shaped sealing ring is composed of a metal insert outer ring and a rubber inner ring, the overall vertical cross section of the rubber inner ring is in a tooth shape, the metal insert outer ring and the rubber inner ring are bonded to be integrally vulcanized and molded, and the metal insert outer ring is made of metal materials with the large linear expansion coefficient. By means of the combined type tooth-shaped sealing ring, aluminum alloy with the large linear expansion coefficient is adopted in the outer side of the rubber inner ring, in this way, in the low-temperature environment, the metal outer ring is deformed to compress the rubber inner ring, the rubber end face sealing pressing amount is accordingly guaranteed, and the contact stress is increased. Meanwhile, tooth-shaped structural design is adopted in the rubber inner ring, the contact pressure distribution gradient can be generated in actual use, namely, the maximum contact pressure is generated at the arc position, the self sealing effect is achieved under the inner pressure effect, the sealing reliability is guaranteed, and meanwhile the redundant part can be contained in sufficient space after compression.
Description
Technical field
The utility model belongs to seal ring technical field, particularly combined type thread form seal ring for a kind of railway vehicle flange.
Background technique
2008 start, and railway vehicle flange is used E shape seal ring 4 to replace original rectangular seal, and it is installed as shown in Figure 1.E shape seal ring has DN10, DN15, DN20, DN25 and five kinds of models of DN32, guaranteed preferably the pneumostop of freight car braking piping, braking pipe arrangement is sewed phenomenon obvious decline, but in severe cold area and winter low temperature period, adopts E shape seal ring or the even the problems referred to above that exist.
Model utility content
Goal of the invention of the present utility model is: for the problem of above-mentioned existence, provide a kind of and guaranteeing under the prerequisite of interchangeability, can further improve the combined type thread form seal ring for railway vehicle flange of flange seal reliability.
The technical solution of the utility model is achieved in that combined type thread form seal ring for a kind of railway vehicle flange, it is characterized in that: described seal ring is comprised of metal down part outer ring and rubber inner ring, inside described rubber inner ring, upper and lower end parts convexes to form respectively laterally, lower lip structure, on described, between lower lip structure, adopt arc section transition to connect, described rubber inner ring vertical cross-section integral body is thread form, described metal down part outer ring and rubber inner ring be bonding rear whole sulfidization molding mutually, described metal down part outer ring adopts the large metallic material of linear expansion coeffcient to make.
Combined type thread form seal ring for railway vehicle flange described in the utility model, described in it, metal down part outer ring adopts aluminum alloy, and described rubber inner ring adopts nitrile butadiene rubber or fluorosioloxane rubber.
Combined type thread form seal ring for railway vehicle flange described in the utility model, described in it, the height H 1 of rubber inner ring is 6.5mm～6.7mm, the height H 2 of described metal down part outer ring is 4.7mm～4.9 mm, described rubber inner ring two ends are arranged symmetrically with respect to the raised area of metal down part outer ring both ends of the surface, and described the raised area height h is 0.8 mm～1.0mm.
Combined type thread form seal ring for railway vehicle flange described in the utility model, described in it, the height H 1 of rubber inner ring is 6.6mm, the height H 2 of described metal down part outer ring is 4.8mm, and described rubber inner ring two ends are 0.9mm with respect to the raised area height h of metal down part outer ring both ends of the surface.
The utility model is by adopting the larger aluminum alloy of linear expansion coeffcient in rubber inner ring outside, like this under low temperature environment, metal race deformation compressing rubber inner ring, thereby guarantee rubber end face sealing pressing amount, increase contact stress, and pass through the bonding of metal down part outer ring and rubber inner ring, when avoiding installing and using, seal ring is radially being stretched and is extruding, and causes Vertical direction to press quantity not sufficient, loses sealing effect; Simultaneously, rubber inner ring adopts thread form structural design, can produce contact distribution gradient in actual use, at circular arc place, produce maximum contact pressure, and having under interior pressure effect, play self sealing action, guarantee sealing reliability, after compression, have enough spaces to hold unnecessary volume simultaneously.
Accompanying drawing explanation
Fig. 1 is the scheme of installation of existing E shape seal ring.
Fig. 2 is structural representation of the present utility model.
Mark in figure: 1 is metal down part outer ring, and 2 is rubber inner ring, and 3a, 3b are upper and lower lip limit structure, and 3c is arc section, and 4 is E shape seal ring.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 2, combined type thread form seal ring for a kind of railway vehicle flange, described seal ring is comprised of metal down part outer ring 1 and rubber inner ring 2, only at the arranged outside metal down part of rubber inner ring, described rubber inner ring 2 inner side upper and lower end parts convex to form respectively laterally, lower lip structure 3a, 3b, on described, between lower lip structure, adopt arc section 3c transition to connect, described rubber inner ring 2 vertical cross-section integral body are thread form, wherein, rubber inner ring adopts thread form structural design, can produce contact distribution gradient in actual use, at circular arc place, produce maximum contact pressure, and having under interior pressure effect, play self sealing action, guarantee sealing reliability, after compression, there are enough spaces to hold unnecessary volume simultaneously, described metal down part outer ring 1 and the mutual bonding rear whole sulfidization molding of rubber inner ring 2, described metal down part outer ring 1 adopts the large metallic material of linear expansion coeffcient to make.
Wherein, described metal down part outer ring 1 adopts aluminum alloy, and described rubber inner ring 2 adopts nitrile butadiene rubber or fluorosioloxane rubber.When rubber inner ring adopts nitrile butadiene rubber, sealing circle can adapt to the Environmental Conditions requirement of-50 ℃～+ 70 ℃; When rubber inner ring adopts fluorosioloxane rubber, sealing circle can adapt to the Environmental Conditions requirement of-60 ℃～+ 200 ℃.
The height H 1 of described rubber inner ring 2 is 6.5mm～6.7mm, the height H 2 of described metal down part outer ring 1 is 4.7mm～4.9 mm, described rubber inner ring 2 two ends are arranged symmetrically with respect to the raised area of metal down part outer ring 1 both ends of the surface, be mainly compression symmetrically, described the raised area height h is 0.8 mm～1.0 mm.In the present embodiment, the height H 1 of described rubber inner ring 2 is 6.6mm, be mainly to control end face decrement 20%～30%, the height H 2 of described metal down part outer ring 1 is 4.8mm, and described rubber inner ring 2 two ends are 0.9mm with respect to the raised area height h of metal down part outer ring 1 both ends of the surface.
Combined type thread form seal ring of the present utility model has low temp compensating function, can with five kinds of model E shape seal rings, exchange completely with existing railway vehicle flange.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. combined type thread form seal ring for a railway vehicle flange, it is characterized in that: described seal ring is comprised of metal down part outer ring (1) and rubber inner ring (2), described rubber inner ring (2) inner side upper and lower end parts convexes to form respectively laterally, lower lip structure (3a, 3b), on described, lower lip structure (3a, 3b), adopt arc section (3c) transition to connect, described rubber inner ring (2) vertical cross-section integral body is thread form, described metal down part outer ring (1) and rubber inner ring (2) be bonding rear whole sulfidization molding mutually, described metal down part outer ring (1) adopts the large metallic material of linear expansion coeffcient to make.
2. combined type thread form seal ring for railway vehicle flange according to claim 1, is characterized in that: described metal down part outer ring (1) adopts aluminum alloy, and described rubber inner ring (2) adopts nitrile butadiene rubber or fluorosioloxane rubber.
3. combined type thread form seal ring for railway vehicle flange according to claim 1 and 2, it is characterized in that: the height H 1 of described rubber inner ring (2) is 6.5mm～6.7mm, the height H 2 of described metal down part outer ring (1) is 4.7mm～4.9 mm, described rubber inner ring (2) two ends are arranged symmetrically with respect to the raised area of metal down part outer ring (1) both ends of the surface, and described the raised area height h is 0.8 mm～1.0mm.
4. combined type thread form seal ring for railway vehicle flange according to claim 3, it is characterized in that: the height H 1 of described rubber inner ring (2) is 6.6mm, the height H 2 of described metal down part outer ring (1) is 4.8mm, and described rubber inner ring (2) two ends are 0.9mm with respect to the raised area height h of metal down part outer ring (1) both ends of the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420210381.1U CN203809681U (en) | 2014-04-28 | 2014-04-28 | Combined type tooth-shaped sealing ring for railway vehicle flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420210381.1U CN203809681U (en) | 2014-04-28 | 2014-04-28 | Combined type tooth-shaped sealing ring for railway vehicle flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203809681U true CN203809681U (en) | 2014-09-03 |
Family
ID=51448433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420210381.1U Expired - Lifetime CN203809681U (en) | 2014-04-28 | 2014-04-28 | Combined type tooth-shaped sealing ring for railway vehicle flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203809681U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727772A (en) * | 2015-03-13 | 2015-06-24 | 美钻能源科技(上海)有限公司 | Nonmetal sealing device with metal shell |
-
2014
- 2014-04-28 CN CN201420210381.1U patent/CN203809681U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727772A (en) * | 2015-03-13 | 2015-06-24 | 美钻能源科技(上海)有限公司 | Nonmetal sealing device with metal shell |
| CN104727772B (en) * | 2015-03-13 | 2017-08-29 | 美钻能源科技(上海)有限公司 | A kind of nonmetallic sealing device with metal shell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |
|
| CX01 | Expiry of patent term |