CN216143175U - Low-temperature sealing leather cup for brake cylinder - Google Patents
Low-temperature sealing leather cup for brake cylinder Download PDFInfo
- Publication number
- CN216143175U CN216143175U CN202121282014.9U CN202121282014U CN216143175U CN 216143175 U CN216143175 U CN 216143175U CN 202121282014 U CN202121282014 U CN 202121282014U CN 216143175 U CN216143175 U CN 216143175U
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- CN
- China
- Prior art keywords
- leather cup
- brake cylinder
- low
- cup
- sealing
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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 - Fee Related
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- 238000007789 sealing Methods 0.000 title claims abstract description 49
- 239000010985 leather Substances 0.000 title claims abstract description 41
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 101100327917 Caenorhabditis elegans chup-1 gene Proteins 0.000 description 10
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model relates to a low-temperature sealing leather cup for a brake cylinder, which is annular, the unilateral section of the leather cup is U-shaped, the leather cup comprises a sealing main body made of rubber, a metal framework is arranged in the sealing main body, an inflation cavity is arranged in the sealing main body at the outer side of the metal framework along the circumferential direction, and the inflation cavity is communicated with the outside through an inflation hole. The high-temperature-resistant steel plate has the advantages of simple structure, low cost, good low-temperature performance, small friction coefficient and long service life.
Description
Technical Field
The utility model relates to a sealing element, in particular to a low-temperature sealing leather cup for a brake cylinder of a subway vehicle.
Background
As an actuating component of the braking of a subway vehicle, the pneumatic sealing of the brake cylinder plays an important role. At present, a leather cup is generally adopted for pneumatic sealing in the field, but the requirement on the hardness of a rubber material is high in order to realize a large rubber contact sealing force, the hardness is generally 70 Shore A, and the following problems can be caused by the high hardness: (1) the low-temperature performance of the high-hardness rubber material is poor, and low-temperature sealing is difficult to realize generally; (2) the friction coefficient between the high-hardness rubber material and the brake cylinder is large, and the leather cup is accelerated to wear due to reciprocating motion in the braking process, so that the service life of the leather cup is short.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a brake cylinder low-temperature sealing leather cup which has the advantages of simple structure, low cost, good low-temperature performance, small friction coefficient and long service life.
In order to solve the problems in the prior art, the utility model provides a brake cylinder low-temperature sealing leather cup which is annular, the unilateral section of the leather cup is U-shaped, the leather cup comprises a sealing main body made of rubber, a metal framework is arranged in the sealing main body, an inflation cavity is arranged in the sealing main body on the outer side of the metal framework along the circumferential direction, and the inflation cavity is communicated with the outside through an inflation hole.
Further, the low-temperature sealing leather cup for the brake cylinder is characterized in that the outer peripheral wall of the leather cup is in a conical shape with a large upper part and a small lower part.
Further, the brake cylinder low-temperature sealing leather cup is characterized in that a plurality of annular grooves are formed in the inner side of the inner peripheral wall of the leather cup.
Furthermore, the brake cylinder low-temperature sealing leather cup is provided with a plurality of inflation holes, and the inflation holes are uniformly distributed along the circumferential direction of the leather cup.
Further, the brake cylinder low-temperature sealing leather cup is characterized in that the metal framework is made of steel.
Compared with the prior art, the low-temperature sealing leather cup for the brake cylinder has the following advantages: the leather cup is in an annular structure, the single-side section of the leather cup is in a U shape, the leather cup is provided with the sealing main body made of rubber, the metal framework is arranged in the sealing main body, the inflation cavity is arranged in the sealing main body on the outer side of the metal framework along the circumferential direction, and the inflation cavity is communicated with the outside through the inflation hole. Therefore, the brake cylinder low-temperature sealing leather cup has the advantages of simple structure, low cost, good low-temperature performance, small friction coefficient and long service life. According to the utility model, the metal framework is arranged in the sealing main body, so that the structural strength of the leather cup is improved, the sealing main body can realize large contact force by selecting a low-hardness rubber material, the low-temperature performance of the leather cup is enhanced, the friction coefficient is reduced, and the service life is prolonged; meanwhile, the inflation cavity is arranged in the sealing main body and is communicated with the outside through the inflation hole, high-pressure gas can enter the inflation cavity through the inflation hole in the inflation process, the sealing main body is subjected to expansion deformation, the tightness of the joint of the leather cup and the brake cylinder is improved, and the sealing effect is enhanced.
The low-temperature sealing cup for the brake cylinder of the utility model is described in detail with reference to the specific embodiment shown in the attached drawings.
Drawings
FIG. 1 is a top view of a low temperature sealing cup for a brake cylinder according to the present invention;
FIG. 2 is a view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged view of position B of FIG. 2;
FIG. 4 is a partial schematic view of the installation state of the low-temperature sealing leather cup of the brake cylinder.
Detailed Description
First, it should be noted that, the directional terms such as up, down, left, right, front, rear, etc. described in the present invention are only described with reference to the accompanying drawings for easy understanding, and do not limit the technical solution and the claimed scope of the present invention.
As shown in fig. 1 to 4, in the embodiment of the low-temperature sealing cup for the brake cylinder of the present invention, the cup 1 has an annular structure, and the single-side cross section of the cup 1 is U-shaped. The leather cup 1 is provided with a sealing main body 11 made of rubber, a metal framework 12 is arranged in the sealing main body 11, an inflation cavity 13 is arranged in the sealing main body 11 at the outer side of the metal framework 12 along the circumferential direction, and the inflation cavity 13 is communicated with the outside through an inflation hole 14.
Through the structural arrangement, the brake cylinder low-temperature sealing leather cup with simple structure, low cost, good low-temperature performance, small friction coefficient and long service life is formed. According to the utility model, the metal framework 12 is arranged in the sealing main body 11, so that the structural strength of the leather cup 1 is improved, the sealing main body 11 can realize large contact force by selecting a low-hardness rubber material, the low-temperature performance of the leather cup 1 is enhanced, the friction coefficient is reduced, and the service life is prolonged. Meanwhile, the inflation cavity 13 is arranged in the sealing main body 11, the inflation cavity 13 is communicated with the outside through the inflation hole 14, high-pressure gas can enter the inflation cavity 13 through the inflation hole 14 in the inflation process, the sealing main body 11 is subjected to expansion deformation, the tightness of the leather cup 1 attached to a brake cylinder is improved, and the sealing effect is enhanced. It should be noted that, in order to ensure the elastic deformation capability of the metal framework 12, the metal framework 12 is usually made of steel, but not limited to steel, and other metal materials with certain elasticity may also be used to make the metal framework 12.
As an optimized scheme, the outer peripheral wall 15 of the leather cup 1 adopts a conical structure with a large upper part and a small lower part, so that the deformability and the adaptability of the leather cup 1 are enhanced; the sealing performance is improved by arranging the plurality of annular grooves 17 on the inner side of the inner peripheral wall 16 of the leather cup 1. In practical application, in order to improve the inflation balance of the inflation cavity 13, the utility model generally arranges a plurality of inflation holes 14, and the inflation holes 14 are uniformly distributed along the circumferential direction of the cup 1.
The above examples are only for describing the preferred embodiments of the present invention, and do not limit the scope of the claimed invention, and various modifications made by those skilled in the art according to the technical solutions of the present invention should fall within the scope of the utility model defined by the claims without departing from the design concept of the present invention.
Claims (5)
1. The utility model provides a brake cylinder low temperature seals leather cup, its characterized in that, leather cup (1) is cyclic annular, and the unilateral cross-section of leather cup (1) is the U type, and leather cup (1) is equipped with metal framework (12) including sealed main part (11) that adopt rubber preparation in sealed main part (11), is equipped with gas-filled chamber (13) along circumference in sealed main part (11) in the metal framework (12) outside, and gas-filled chamber (13) communicate with each other with the outside through inflating hole (14).
2. The brake cylinder low-temperature sealing cup according to claim 1, wherein the outer peripheral wall (15) of the cup (1) is tapered in a large-upper-and-small-lower shape.
3. The brake cylinder low-temperature sealing cup according to claim 1, characterized in that a plurality of ring grooves (17) are formed in the inner side of the inner peripheral wall (16) of the cup (1).
4. The brake cylinder low-temperature sealing cup according to claim 1, wherein a plurality of the inflation holes (14) are provided, and the plurality of inflation holes (14) are uniformly distributed along the circumferential direction of the cup (1).
5. The brake cylinder low-temperature sealing cup according to claim 1, wherein the metal framework (12) is made of steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121282014.9U CN216143175U (en) | 2021-06-08 | 2021-06-08 | Low-temperature sealing leather cup for brake cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121282014.9U CN216143175U (en) | 2021-06-08 | 2021-06-08 | Low-temperature sealing leather cup for brake cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216143175U true CN216143175U (en) | 2022-03-29 |
Family
ID=80800140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121282014.9U Expired - Fee Related CN216143175U (en) | 2021-06-08 | 2021-06-08 | Low-temperature sealing leather cup for brake cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216143175U (en) |
-
2021
- 2021-06-08 CN CN202121282014.9U patent/CN216143175U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220329 |