CN219366670U - Novel locomotive daub buffer sealing structure - Google Patents
Novel locomotive daub buffer sealing structure Download PDFInfo
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- CN219366670U CN219366670U CN202320317784.5U CN202320317784U CN219366670U CN 219366670 U CN219366670 U CN 219366670U CN 202320317784 U CN202320317784 U CN 202320317784U CN 219366670 U CN219366670 U CN 219366670U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The utility model relates to a novel sealing structure of a locomotive cement buffer, which comprises a cylinder body, a cylinder cover and a blocking cover, wherein a piston rod is arranged in the center of the cylinder cover in a penetrating way, a piston is arranged at the inner end of the piston rod, and cement is filled in the inner cavity of the cylinder body; the device comprises a cylinder cover, a piston rod, a tail cover, a sealing retaining sleeve, a tail cover and an elastic collar, wherein a first-stage hard seal, a first-stage combined sealing ring, a sealing retaining sleeve, a tail cover and an elastic collar are sequentially arranged between the inner wall of the cylinder cover and the outer wall of the piston rod from left to right, a second-stage hard seal and a second-stage combined sealing ring are sequentially arranged between the inner wall of the sealing retaining sleeve and the outer wall of the piston rod from left to right, and a third-stage hard seal is arranged between the inner wall of the tail cover and the outer wall of the piston rod. The combined double-layer soft sealing structure is adopted, each seal is provided with an independent hard seal to be supported, and the reliability of each seal is improved structurally; the three hard seals increase the guiding stability of the piston rod and provide effective protection for the soft seal.
Description
Technical Field
The utility model relates to the technical field of cement buffers, in particular to a novel sealing structure of a locomotive cement buffer.
Background
The cement buffer has a plurality of applications in the railway industry at home and abroad, and has the application of the cement buffer in the side buffer of UIC (International railway Union) standard and the subway vehicle in Europe; at present, cement buffers are also adopted for domestic harmonious locomotives. The problem that the buffer is invalid due to early leakage of the locomotive cement buffer core body is always existed from 2005, although the problem is uniformly modified by product manufacturing enterprises, such as the sealing of the KC15 buffer cement core is gradually changed from three sets of sealing to four sets of sealing and six sets of sealing, the QKX100 buffer enhances auxiliary buffering performance and the like by improving the structure of the buffer elastomer, but the problem that the buffer is invalid due to leakage of the cement core cement is not solved well so far, and thus a large amount of product overhauls, sometimes even the problem that the locomotive is used for a unit of use, hidden danger is brought to driving safety and the like is caused.
Disclosure of Invention
The utility model aims to solve the defects of the prior art, and provides a novel sealing structure of a locomotive cement buffer, so as to improve the overall service life of the locomotive cement buffer, realize that the cement buffer in the overhaul period does not fail, ensure the operation safety of the locomotive and reduce the operation cost of the locomotive.
The utility model adopts the following technical scheme to realize the aim:
the novel sealing structure of the locomotive cement buffer comprises a cylinder body, wherein a cylinder cover is arranged at the left end opening of an inner cavity of the cylinder body, a blocking cover is arranged at the right end opening of the inner cavity, a piston rod is arranged in the center of the cylinder cover in a penetrating manner, the piston rod stretches into the inner cavity of the cylinder body and is arranged in the inner cavity of the cylinder body through a piston rod mounting seat, a piston is arranged at the inner end of the piston rod, and cement is filled in the inner cavity of the cylinder body; the device comprises a cylinder cover, a piston rod, a tail cover, a sealing retaining sleeve, a tail cover and an elastic collar, wherein a first-stage hard seal, a first-stage combined sealing ring, a sealing retaining sleeve, a tail cover and an elastic collar are sequentially arranged between the inner wall of the cylinder cover and the outer wall of the piston rod from left to right, a second-stage hard seal and a second-stage combined sealing ring are sequentially arranged between the inner wall of the sealing retaining sleeve and the outer wall of the piston rod from left to right, and a third-stage hard seal is arranged between the inner wall of the tail cover and the outer wall of the piston rod.
The outer wall of the seal retaining sleeve is provided with a static seal installation annular groove, and the static seal is installed in the static seal installation annular groove.
The inner wall of the seal retaining sleeve is provided with a second-stage hard seal mounting annular groove, and the second-stage hard seal is arranged in the second-stage hard seal mounting annular groove.
The right end of the inner wall of the sealing retaining sleeve is provided with a second-stage combined sealing ring mounting ring groove, and the second-stage combined sealing ring is mounted in the second-stage combined sealing ring mounting ring groove.
And a third-stage hard seal mounting annular groove is formed in the inner wall of the tail cover, and the third-stage hard seal is arranged in the third-stage hard seal mounting annular groove.
The clay is arranged between the piston rod mounting seat and the piston and between the piston and the blocking cover.
A sealing ring is arranged between the outer wall of the blanking cover and the inner wall of the cylinder body.
The beneficial effects of the utility model are as follows: the combined double-layer soft sealing structure is adopted, each seal is provided with an independent hard seal to be supported, and the reliability of each seal is improved structurally; the structure is provided with three hard seals made of composite materials, so that the guiding stability of the piston rod is improved, and effective protection can be provided for soft seals, thereby prolonging the service life of the elastic cement sealing system.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of a seal portion of the present utility model;
in the figure: 1-a cylinder body; 2-a cylinder cover; 3-plugging a cover; 4-a piston rod; 5-a piston rod mounting seat; 6-a piston; 7-daub; 8-first stage hard sealing; 9-a first-stage combined sealing ring; 10-sealing the retaining sleeve; 11-tail cap; 12-elastic collar; 13-static sealing; 14-a second stage hard seal; 15-a second-stage combined sealing ring; 16-third stage hard sealing; 17-a sealing ring;
the embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
Detailed Description
The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model. The utility model is more particularly described by way of example in the following paragraphs with reference to the drawings. The advantages and features of the present utility model will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
1-2, the novel locomotive cement buffer sealing structure comprises a cylinder body 1, a cylinder cover 2, a blanking cover 3, a piston rod 4, a piston rod mounting seat 5, a piston 6, cement 7, a first-stage hard seal 8, a first-stage combined sealing ring 9, a sealing retaining sleeve 10, a tail cover 11, an elastic clamping ring 12, a static seal 13, a second-stage hard seal 14, a second-stage combined sealing ring 15, a third-stage hard seal 16 and a sealing ring 17.
The left port of the inner cavity of the cylinder body 1 is provided with a cylinder cover 2, the right port of the inner cavity is provided with a blanking cover 3, a piston rod 4 is arranged in the center of the cylinder cover 2 in a penetrating mode, the piston rod 4 stretches into the inner cavity of the cylinder body 1 and is arranged in the inner cavity of the cylinder body 1 through a piston rod mounting seat 5, the inner end of the piston rod 4 is provided with a piston 6, and the inner cavity of the cylinder body 1 is filled with cement 7. The airtight cavity formed by the cylinder body 1, the cylinder cover 2, the piston rod 4 and the blanking cover 3 is filled with the cement 7 with certain pressure, when the piston rod 4 is stressed to move to the right side, the piston rod 4 is pressed into the airtight cavity, the volume in the cavity is reduced, the cement 7 is compressed, the counter force is increased, after the external force is withdrawn, the compressed cement 7 automatically returns to the initial state due to the characteristic of the cement 7, and the piston rod 4 is pushed to move to the left side, so that the initial position is restored.
In the process, the piston rod 4 is a moving part, and generates relative movement with the cylinder cover 2, the seal retaining sleeve 10, the tail cover 11 and the sealing part, and when the sealing part is worn, the cement 7 leaks from the sealing part, so that the product is invalid.
In order to overcome the problem, a first-stage hard seal 8, a first-stage combined sealing ring 9, a seal retaining sleeve 10, a tail cover 11 and an elastic clamping ring 12 are sequentially arranged between the inner wall of the cylinder cover 2 and the outer wall of the piston rod 4 from left to right, a static seal 13 is arranged between the outer wall of the seal retaining sleeve 10 and the inner wall of the cylinder cover 2, a second-stage hard seal 14 and a second-stage combined sealing ring 15 are sequentially arranged between the inner wall of the seal retaining sleeve 10 and the outer wall of the piston rod 4 from left to right, and a third-stage hard seal 16 is arranged between the inner wall of the tail cover 11 and the outer wall of the piston rod 4.
The inner wall of the seal retaining sleeve 10 is provided with a second stage hard seal mounting groove in which a second stage hard seal 14 is mounted. The right end of the inner wall of the sealing and retaining sleeve 10 is provided with a second-stage combined sealing ring mounting ring groove, and a second-stage combined sealing ring 15 is mounted in the second-stage combined sealing ring mounting ring groove. The inner wall of the tail cover 11 is provided with a third-stage hard seal mounting annular groove, and a third-stage hard seal 16 is arranged in the third-stage hard seal mounting annular groove. The cement 7 is arranged between the piston rod mounting seat 5 and the piston 6 and between the piston 6 and the blanking cover 3. A sealing ring 17 is arranged between the outer wall of the blanking cover 3 and the inner wall of the cylinder body 1.
The novel structure adopts three hard seals with self-lubricating and supporting guiding functions, has good compression resistance, small clearance with the piston rod 4, and can generate enough support for combined soft seal, thereby greatly reducing cold flow generation of two combined seals under the action of high pressure. The outer wall of the seal retaining sleeve 10 is provided with a static seal installation annular groove, and the static seal 13 is installed in the static seal installation annular groove.
The static seal 13 is arranged outside the seal retaining sleeve 10, so that the daub 7 cannot reach the left first-stage combined sealing ring 9 through the outside of the seal retaining sleeve 10, the first-stage combined sealing ring 9 and the second-stage combined sealing ring 15 are relatively independent and are not influenced, and the service life of the daub 7 core is prolonged.
The self-lubricating third-stage hard seal 16 of the piston ring structure is arranged in the inner hole of the tail cover 11, when high pressure is generated in the core body, the self-lubricating third-stage hard seal 16 is closed, the influence of the high pressure on the left first-stage combined sealing ring 9 is reduced, and the service life of the clay 7 core body is further prolonged.
The combination of the first-stage hard seal 8 on the cylinder cover 2, the second-stage hard seal 14 on the seal retaining sleeve 10 and the third-stage hard seal 16 on the tail cover 11 provides a support with sufficient strength for the movement of the piston rod 4, ensures the smoothness of a movement system and improves the bearing capacity of the lateral force of the piston rod 4.
The combined double-layer soft sealing structure is adopted, each seal is provided with an independent hard seal to be supported, and the reliability of each seal is improved structurally; the structure is provided with three hard seals made of composite materials, so that the guiding stability of the piston rod 4 is improved, and effective protection can be provided for soft seals, thereby prolonging the service life of the sealing system of the elastic cement 7; the third-stage hard seal 16 is of a piston ring structure, so that the impact force of high pressure on soft seal can be effectively reduced, and the influence of the high-pressure environment in the cavity of the cement 7 on the sealing life is reduced.
While the utility model has been described above with reference to the accompanying drawings, it will be apparent that the utility model is not limited to the above embodiments, but is intended to cover various modifications, either made by the method concepts and technical solutions of the utility model, or applied directly to other applications without modification, within the scope of the utility model.
Claims (7)
1. The utility model provides a novel locomotive daub buffer seal structure, including cylinder body (1), cylinder body (1) inner chamber left port is equipped with cylinder cap (2) and inner chamber right port is equipped with blanking cap (3), wears to establish at cylinder cap (2) center and installs piston rod (4), and piston rod (4) stretch into cylinder body (1) inner chamber and install in cylinder body (1) inner chamber through piston rod mount pad (5), and piston rod (4) inner is equipped with piston (6), is filled with daub (7) in cylinder body (1) inner chamber; the novel sealing device is characterized in that a first-stage hard seal (8), a first-stage combined sealing ring (9), a seal retaining sleeve (10), a tail cover (11) and an elastic clamping ring (12) are sequentially arranged between the inner wall of the cylinder cover (2) and the outer wall of the piston rod (4) from left to right, a static seal (13) is arranged between the outer wall of the seal retaining sleeve (10) and the inner wall of the cylinder cover (2), a second-stage hard seal (14) and a second-stage combined sealing ring (15) are sequentially arranged between the inner wall of the seal retaining sleeve (10) and the outer wall of the piston rod (4) from left to right, and a third-stage hard seal (16) is arranged between the inner wall of the tail cover (11) and the outer wall of the piston rod (4).
2. The novel locomotive cement buffer sealing structure according to claim 1, wherein a static seal installation annular groove is formed in the outer wall of the seal retaining sleeve (10), and a static seal (13) is installed in the static seal installation annular groove.
3. The novel locomotive cement buffer sealing structure according to claim 2, wherein a second-stage hard seal mounting annular groove is formed in the inner wall of the seal retaining sleeve (10), and a second-stage hard seal (14) is mounted in the second-stage hard seal mounting annular groove.
4. The sealing structure of the novel locomotive cement buffer according to claim 3, wherein a second-stage combined sealing ring mounting ring groove is formed in the right end of the inner wall of the sealing retaining sleeve (10), and the second-stage combined sealing ring (15) is mounted in the second-stage combined sealing ring mounting ring groove.
5. The novel locomotive cement buffer sealing structure according to claim 4, wherein a third-stage hard seal mounting annular groove is formed in the inner wall of the tail cover (11), and a third-stage hard seal (16) is mounted in the third-stage hard seal mounting annular groove.
6. The sealing structure of the novel locomotive cement buffer according to claim 5 is characterized in that cement (7) is arranged between the piston rod mounting seat (5) and the piston (6) and between the piston (6) and the blanking cover (3).
7. The novel locomotive cement buffer sealing structure according to claim 6 is characterized in that a sealing ring (17) is arranged between the outer wall of the plug cover (3) and the inner wall of the cylinder body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320317784.5U CN219366670U (en) | 2023-02-27 | 2023-02-27 | Novel locomotive daub buffer sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320317784.5U CN219366670U (en) | 2023-02-27 | 2023-02-27 | Novel locomotive daub buffer sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219366670U true CN219366670U (en) | 2023-07-18 |
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ID=87138202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320317784.5U Active CN219366670U (en) | 2023-02-27 | 2023-02-27 | Novel locomotive daub buffer sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219366670U (en) |
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2023
- 2023-02-27 CN CN202320317784.5U patent/CN219366670U/en active Active
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