CN113958573A - Piston rod U-shaped sealing ring with reinforcing ring - Google Patents
Piston rod U-shaped sealing ring with reinforcing ring Download PDFInfo
- Publication number
- CN113958573A CN113958573A CN202111212100.7A CN202111212100A CN113958573A CN 113958573 A CN113958573 A CN 113958573A CN 202111212100 A CN202111212100 A CN 202111212100A CN 113958573 A CN113958573 A CN 113958573A
- Authority
- CN
- China
- Prior art keywords
- shaped
- ring
- reinforcing ring
- piston rod
- sealing ring
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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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/56—Other sealings for reciprocating rods
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention provides a piston rod U-shaped sealing ring with a reinforcing ring, which belongs to the technical field of sealing elements and comprises the U-shaped sealing ring with a U-shaped section and the reinforcing ring, wherein the reinforcing ring is embedded at the root part of the sealing ring and is matched with the sealing ring, and the reinforcing ring is an S-shaped reinforcing ring with an S-shaped section. The invention has simple integral structure, the root of the U-shaped sealing ring is inlaid with the S-shaped reinforcing ring, the structural design of the S-shaped reinforcing ring is matched with the U-shaped sealing ring very tightly, the S-shaped reinforcing ring is not easy to fall off in the installation and use processes, the S-shaped reinforcing ring is made of high-hardness wear-resistant material, the S-shaped reinforcing ring has very high hardness and strength, can bear higher hydraulic oil pressure and pulse pressure of reciprocating motion of the piston rod, and has very wear-resistant characteristic, thereby solving the problem of damage of the U-shaped sealing ring.
Description
Technical Field
The invention belongs to the technical field of sealing elements, and particularly relates to a U-shaped sealing ring of a piston rod with a reinforcing ring.
Background
The hydraulic breaking hammer belongs to a high-frequency reciprocating motion tool and is widely applied to industries such as mining, roads, buildings and the like. The hydraulic seal is used for preventing leakage, but the increase of the sealing performance increases friction force, the increase of the friction force directly causes the reduction of the movement capacity and the quality, the friction force accelerates the abrasion of the seal, and the friction and the abrasion are main reasons causing the failure and the breakage of the seal.
Simultaneously, because there is certain fit clearance between hydraulic breaking hammer piston rod and the cylinder, and hydraulic breaking hammer theory of operation belongs to high-frequency high-speed high pressure, so can lead to the sealing washer root to extrude damaged phenomenon, and damaged oil blanket piece can get into cylinder body and piston rod fit clearance the inside to lead to hydraulic breaking hammer piston rod and cylinder body to pull and hinder and unable normal work.
Therefore, it is necessary to develop a combined sealing ring more suitable for the working principle of the hydraulic breaking hammer.
Disclosure of Invention
The invention aims to provide a U-shaped sealing ring with a reinforcing ring for a piston rod, which has the advantages of simple structure, high overall strength, good extrusion performance, good sealing effect, low friction force and long service life.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a piston rod U-shaped sealing washer with reinforcing ring, includes that the cross-section is U-shaped's U-shaped sealing washer and reinforcing ring, the reinforcing ring inlays and sets up in the sealing washer root with the sealing washer cooperation.
The reinforcing ring is an S-shaped reinforcing ring with an S-shaped section.
The U-shaped sealing ring comprises an inner lip and an outer lip, a middle groove is arranged between the inner lip and the outer lip, the outer lip top is extended and the root is respectively provided with an outer lip top chamfer and an outer lip root chamfer, and the inner lip top is extended and provided with an inner lip top chamfer.
The bulge of the S-shaped reinforcing ring is positioned at the edge of the root of the inner lip of the U-shaped sealing ring and wraps the root of the inner lip; the two ends of the S-shaped reinforcing ring extend into the U-shaped sealing ring.
The root of the bulge of the S-shaped reinforcing ring is an angle R1.8; the chamfer angle at the top of the inner lip is 65 degrees; the chamfer angle at the top of the outer lip is 45 degrees.
The S-shaped reinforcing ring is made of high-hardness wear-resistant materials.
The S-shaped reinforcing ring is made of PTFE material.
The S-shaped reinforcing ring is made of PTFE and bronze powder.
By adopting the technical scheme, the integral structure of the invention is simple, the root part of the U-shaped sealing ring is inlaid with the S-shaped reinforcing ring, the structural design of the S-shaped reinforcing ring is very tightly matched with the U-shaped sealing ring, the S-shaped reinforcing ring is not easy to fall off in the installation and use processes, the S-shaped reinforcing ring is made of high-hardness wear-resistant materials, the hardness and the strength of the S-shaped reinforcing ring are very high, the S-shaped reinforcing ring can bear higher hydraulic oil pressure and pulse pressure of reciprocating motion of a piston rod, and the S-shaped reinforcing ring has very wear-resistant characteristics, so that the problem of damage of the U-shaped sealing ring is solved.
Therefore, the design that the S-shaped reinforcing ring is embedded at the root part of the inner lip of the U-shaped sealing ring makes up the defects of the U-shaped sealing ring, improves the overall strength of the U-shaped sealing ring, has excellent extrusion performance, and ensures that the friction coefficient between the piston rod and the U-shaped sealing ring is very low. The R1.8 angle is arranged at the root of the protrusion of the S-shaped reinforcing ring, so that the contact area between the U-shaped reinforcing ring and the piston rod can be effectively reduced, a part of hydraulic oil can be stored in the U-shaped reinforcing ring to increase the lubricating property between the U-shaped reinforcing ring and the piston rod, the friction force between the U-shaped reinforcing ring and the piston rod is reduced, the heat generated by friction is reduced, the service life of the U-shaped sealing ring is prolonged, and meanwhile, the U-shaped reinforcing ring has a good oil sealing effect.
The invention has the beneficial effects that: the extrusion device has the advantages of simple structure, high overall strength, good extrusion performance, good sealing effect, low friction force and long service life.
Drawings
The advantages and realisation of the invention will be more apparent from the following detailed description, given by way of example, with reference to the accompanying drawings, which are given for the purpose of illustration only, and which are not to be construed in any way as limiting the invention, and in which:
FIG. 1 is a schematic top view of the present invention
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 2 according to the present invention
FIG. 3 is a cross-sectional view of the S-shaped reinforcing ring of the present invention
In the figure:
1. u-shaped sealing ring 2, S-shaped reinforcing ring 3 and inner lip
4. Outer lip 5, middle groove 6, outer lip top chamfer
7. Outer lip root chamfer 8, inner lip top chamfer 9, arch
10. Angle R1.8
Detailed Description
As shown in fig. 1 to 3, the U-shaped sealing ring with the reinforcing ring for the piston rod of the invention comprises a U-shaped sealing ring 1 with a U-shaped section and an S-shaped reinforcing ring 2 with an S-shaped section, wherein the S-shaped reinforcing ring 2 is embedded into the root of the U-shaped sealing ring 1 and is matched with the U-shaped sealing ring 1, the U-shaped sealing ring 1 comprises an inner lip 3 and an outer lip 4, a middle groove 5 is arranged between the inner lip 3 and the outer lip 4, an outer lip top chamfer 6 and an outer lip root chamfer 7 are respectively arranged on the extension and the root of the top of the outer lip 4, an inner lip top chamfer 8 is arranged on the extension of the top of the inner lip 3, and a protrusion 9 of the S-shaped reinforcing ring 2 is positioned at the edge of the root of the inner lip 3 of the U-shaped sealing ring 1 to wrap the root of the inner lip 3; the two ends of the S-shaped reinforcing ring 2 extend into the U-shaped sealing ring 1, and the root of a bulge 9 of the S-shaped reinforcing ring 2 is an R1.8 angle 10; the chamfer angle 8 at the top of the inner lip is 65 degrees; the chamfer angle 6 at the top of the outer lip is 45 degrees; the S-shaped reinforcing ring 2 is made of PTFE and bronze powder.
The invention has simple integral structure, the root of the U-shaped sealing ring 1 is inlaid with the S-shaped reinforcing ring 2, the structural design of the S-shaped reinforcing ring 2 is matched with the U-shaped sealing ring 1 very tightly, and the S-shaped reinforcing ring 2 is not easy to fall off in the installation and use processes, the S-shaped reinforcing ring 2 is made of PTFE + bronze powder (the material is the prior art), the hardness and the strength of the S-shaped reinforcing ring are very high, the S-shaped reinforcing ring can bear higher hydraulic oil pressure and pulse pressure of reciprocating motion of a piston rod, and the S-shaped reinforcing ring has very wear-resistant characteristic, thereby solving the problem of damage of the U-shaped sealing ring 1.
Therefore, the design that the S-shaped reinforcing ring 2 is embedded at the root part of the inner lip 3 of the U-shaped sealing ring 1 makes up the defects of the U-shaped sealing ring 1, improves the overall strength of the U-shaped sealing ring 1, has excellent extrusion performance, and ensures that the friction coefficient between the piston rod and the U-shaped sealing ring 1 is very low. The root of the bulge 9 of the S-shaped reinforcing ring 2 is provided with the R1.8 angle 10, so that the contact area between the U-shaped reinforcing ring and the piston rod can be effectively reduced, a part of hydraulic oil can be stored in the U-shaped reinforcing ring to increase the lubricating property between the U-shaped reinforcing ring and the piston rod, the friction force between the U-shaped reinforcing ring and the piston rod is reduced, the heat generated by friction is reduced, the service life of the U-shaped sealing ring 1 is prolonged, and meanwhile, the U-shaped reinforcing ring has a good oil sealing effect, the design of the chamfer 7 at the root of the outer lip is convenient for the U-shaped reinforcing ring to be installed in the groove, the chamfer 8 at the top of the inner lip is a chamfer of 65 degrees, and the chamfer 3 at the 65 degrees can enable the inner lip to be sharp, so that the hydraulic oil on the piston rod can be well scraped, the leakage of a small amount of hydraulic oil is avoided, the chamfer 6 at the top of the outer lip is a chamfer of 45 degrees, the chamfer can be in better close contact with the groove of the cylinder body, and the sealing effect is effectively improved.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
Claims (8)
1. The utility model provides a piston rod U-shaped sealing washer with reinforcing ring which characterized in that: the sealing ring comprises a U-shaped sealing ring and a reinforcing ring, wherein the section of the U-shaped sealing ring is U-shaped, and the reinforcing ring is inlaid at the root of the sealing ring and is matched with the sealing ring.
2. The piston rod U-ring seal with a reinforcing ring of claim 1 wherein: the reinforcing ring is an S-shaped reinforcing ring with an S-shaped section.
3. The piston rod U-ring seal with a reinforcing ring of claim 2 wherein: the U-shaped sealing ring comprises an inner lip and an outer lip, a middle groove is arranged between the inner lip and the outer lip, the outer lip top is extended and the root is respectively provided with an outer lip top chamfer and an outer lip root chamfer, and the inner lip top is extended and provided with an inner lip top chamfer.
4. The piston rod U-ring seal of claim 3 wherein: the bulge of the S-shaped reinforcing ring is positioned at the edge of the root of the inner lip of the U-shaped sealing ring and wraps the root of the inner lip; the two ends of the S-shaped reinforcing ring extend into the U-shaped sealing ring.
5. The piston rod U-ring seal with a reinforcing ring of claim 4 wherein: the root of the bulge of the S-shaped reinforcing ring is an angle R1.8; the chamfer angle at the top of the inner lip is 65 degrees; the chamfer angle at the top of the outer lip is 45 degrees.
6. The piston rod U-shaped seal ring with the reinforcing ring according to any one of claims 2 to 5, wherein: the S-shaped reinforcing ring is made of high-hardness wear-resistant materials.
7. The piston rod U-ring seal of claim 6 wherein: the S-shaped reinforcing ring is made of PTFE material.
8. The piston rod U-ring seal of claim 7 wherein: the S-shaped reinforcing ring is made of PTFE and bronze powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111212100.7A CN113958573A (en) | 2021-10-18 | 2021-10-18 | Piston rod U-shaped sealing ring with reinforcing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111212100.7A CN113958573A (en) | 2021-10-18 | 2021-10-18 | Piston rod U-shaped sealing ring with reinforcing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113958573A true CN113958573A (en) | 2022-01-21 |
Family
ID=79464345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111212100.7A Withdrawn CN113958573A (en) | 2021-10-18 | 2021-10-18 | Piston rod U-shaped sealing ring with reinforcing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113958573A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116169316A (en) * | 2023-04-24 | 2023-05-26 | 上海韵量新能源科技有限公司 | Fuel cell sealing structure, fuel cell and fuel cell stack |
-
2021
- 2021-10-18 CN CN202111212100.7A patent/CN113958573A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116169316A (en) * | 2023-04-24 | 2023-05-26 | 上海韵量新能源科技有限公司 | Fuel cell sealing structure, fuel cell and fuel cell stack |
| CN116169316B (en) * | 2023-04-24 | 2023-06-30 | 上海韵量新能源科技有限公司 | Fuel cell sealing structure, fuel cell and fuel cell stack |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220121 |
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| WW01 | Invention patent application withdrawn after publication |