CN115106749A - Sealing ring pre-expanding device - Google Patents
Sealing ring pre-expanding device Download PDFInfo
- Publication number
- CN115106749A CN115106749A CN202210608175.5A CN202210608175A CN115106749A CN 115106749 A CN115106749 A CN 115106749A CN 202210608175 A CN202210608175 A CN 202210608175A CN 115106749 A CN115106749 A CN 115106749A
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- China
- Prior art keywords
- sealing ring
- cavity
- base
- expansion sleeve
- push cylinder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The invention provides a sealing ring pre-expanding device which comprises a guide push cylinder, a sealing ring expanding sleeve, a sealing ring body and a base, wherein the guide push cylinder is arranged on the base; the guide push cylinder is provided with an inner cavity, the inner cavity comprises a first cavity and a second cavity which are arranged from bottom to top, the inner diameter of the first cavity is larger than that of the second cavity, and a surface formed between the first cavity and the second cavity is a step surface; the bottom of the base is provided with a bottom support, the middle of the base is provided with a guide post, the middle upper part of the base forms an expansion sleeve seat, the expansion sleeve seat is used for sleeving a sealing ring expansion sleeve, a sealing ring body is sleeved to the sealing ring expansion sleeve, the guide push cylinder is sleeved to the base, and a first cavity of the guide push cylinder and the guide post of the base form clearance fit; and the second cavity of the guide push cylinder is used for pushing the sealing ring body from top to bottom on the sealing ring expansion sleeve. The invention aims to solve the problem of uneven force application of the push cylinder when the steel sealing ring is expanded by the expansion sleeve.
Description
Technical Field
The invention belongs to the field of turbochargers, and particularly relates to a sealing ring pre-expanding device.
Background
The turbocharger is an important subsystem of the engine, and has high technical requirements on the use reliability and stability of the turbocharger. The shaft end sealing ring of the turbine rotating shaft is one of key structures for guaranteeing the stable work and the service life of the supercharger. The turbine end and the compressor end of the turbocharger are both provided with sealing ring structures, and the turbocharger has dual functions of air sealing and oil sealing. Particularly, the sealing ring close to the turbine end of the turbine can reach 750 ℃, and the sealing ring with unqualified quality is easy to deform beyond the design margin due to high temperature, so that the supercharger leaks air and oil, the sealing effect cannot be achieved, the supercharger cannot work reliably for a long time, and the rotating shaft is cut to further cause a shaft breakage accident;
when the sealing ring at the turbine end of the supercharger is assembled, the sealing ring needs to enter the sealing ring groove through a section of thick shaft, and the section of journal needing to pass through is about 4% larger than the section of journal which can pass through the sealing ring in a free state, so that the sealing ring needs to be arranged in the journal ring groove after being expanded. When the expansion sleeve and the push sleeve tool are only used for expanding the sealing ring, the inner diameter of the push sleeve and the outer diameter of the conical surface of the expansion sleeve have larger size difference inevitably, the deflection of the thrust and the uneven distribution of the thrust can be caused by the deflection of the push sleeve in the expanding process of the sealing ring, so that the sealing ring moves obliquely, a bending moment is generated, or the local part of the sealing ring scratches the expansion sleeve to generate chips, the chips enter the sealing ring groove along with the sealing ring groove and are difficult to clean, and great hidden danger is buried for the occurrence of supercharger faults.
Disclosure of Invention
In view of this, the present invention provides a sealing ring pre-expanding device to solve the problem of uneven force application of a push cylinder when a steel sealing ring is expanded by an expansion sleeve.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a sealing ring pre-supporting expansion device comprises a guide push cylinder, a sealing ring expansion sleeve, a sealing ring body and a base; the guide push cylinder is provided with an inner cavity, the inner cavity comprises a first cavity and a second cavity which are arranged from bottom to top, the inner diameter of the first cavity is larger than that of the second cavity, and a surface formed between the first cavity and the second cavity is a step surface; the bottom of the base is provided with a bottom support, the middle of the base is provided with a guide post, the middle upper part of the base forms an expansion sleeve seat, the expansion sleeve seat is used for sleeving a sealing ring expansion sleeve, a sealing ring body is sleeved to the sealing ring expansion sleeve, the guide push cylinder is sleeved to the base, and a first cavity of the guide push cylinder and the guide post of the base form clearance fit; and the second cavity of the guide push cylinder is used for pushing the sealing ring body from top to bottom on the sealing ring expansion sleeve.
Further, the sealing ring expands and overlaps and install to the cover seat that expands after, forms the taper cylinder section and the straight section of thick bamboo section that external diameter from top to bottom increases gradually, and the external diameter of taper cylinder section bottom is the same with the external diameter of straight section of thick bamboo section.
Furthermore, the ratio of the outer diameter of the top end of the conical cylinder section to the outer diameter of the straight cylinder section is 1: 1.13.
Furthermore, a cavity II of the guide push cylinder is in clearance fit with a guide column of the base by adopting H7/H6.
Compared with the prior art, the sealing ring pre-expanding device has the following advantages:
(1) according to the sealing ring pre-expanding device, the sealing ring body is stressed uniformly during expanding, and local excessive deformation does not exist.
(2) According to the sealing ring pre-expanding device, the sealing ring body is not scratched with other parts and tools during assembly.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic sectional view of a sealing ring pre-expansion device according to an embodiment of the present invention;
FIG. 2 is a schematic view illustrating an operation state of installing the sealing ring into the sealing ring groove according to the embodiment of the present invention.
Description of reference numerals:
1. a guiding push cylinder; 11. a first chamber; 12. a second chamber; 13. a step surface; 2. a sealing ring expansion sleeve; 21. a conical section; 22. a straight cylinder section; 3. a seal ring body; 4. a base; 41. expanding the sleeve seat; 42. a guide post; 43. a bottom support; 5. a rotating member; 51. and a sealing ring groove.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A sealing ring pre-supporting expansion device comprises a guide push cylinder 1, a sealing ring expansion sleeve 2, a sealing ring body 3 and a base 4; the guide push cylinder 1 is provided with an inner cavity, the inner cavity comprises a first cavity 11 and a second cavity 12 which are arranged from bottom to top, the inner diameter of the first cavity 11 is larger than that of the second cavity 12, and a step surface 13 is formed between the first cavity 11 and the second cavity 12; the bottom of the base 4 is provided with a bottom support 43, the middle of the base 4 is provided with a guide post 42, the middle upper part of the base 4 forms an expansion sleeve seat 41, the expansion sleeve seat 41 is used for sleeving the sealing ring expansion sleeve 2, the sealing ring body 3 is sleeved to the sealing ring expansion sleeve 2, the guide push cylinder 1 is sleeved to the base 4, and a first cavity 11 of the guide push cylinder 1 and the guide post 42 of the base 4 form clearance fit; and the second cavity 12 of the guide push cylinder 1 is used for pushing the sealing ring body 3 from top to bottom on the sealing ring expansion sleeve 2.
Preferably, after the sealing ring expansion sleeve 2 is installed on the expansion sleeve seat 41, a conical cylinder section 21 and a straight cylinder section 22 with gradually increasing outer diameters from top to bottom are formed, and the outer diameter of the bottom of the conical cylinder section 21 is the same as that of the straight cylinder section 22; the taper of the conical barrel section 21 is 2 degrees.
Preferably, the ratio of the outer diameter of the top end of the conical cylinder section 21 to the outer diameter of the straight cylinder section 22 is 1: 1.13;
the minimum end of the conical cylinder section 21 has an outer diameter of phi 12.5mm, the inner diameter of the sealing ring body 3 in a free state is phi 13.5mm, and the outer diameter of the straight cylinder section 22 is phi
The outer diameter of the groove shoulder of the sealing ring groove 51 of the rotary part 5 is slightly larger in tolerance than that of the groove shoulder
The design can ensure the smooth assembly of the sealing ring and can reduce the plastic deformation of the sealing ring as much as possible. The verticality between the outer diameter of the straight cylinder section 22 of the sealing ring expansion sleeve 2 and the end surface is designed to be phi 0.01 mm.
Preferably, the cavity II 12 of the guide push cylinder 1 is in clearance fit with the guide post 42 of the base by adopting H7/H6; the matching surface on the base and the upper end surface of the base adopt the vertical form and position tolerance of phi 0.01 mm.
The first cavity 11 of the guide push cylinder 1 is in clearance fit with the straight cylinder section 22 of the sealing ring expansion sleeve 2, and the design size is
The surface roughness was 1.6. The verticality form and position tolerance of phi 0.01mm is designed by taking the step end face as the reference in the two-section step inner holes of the guide push cylinder 1.
The sealing ring expansion sleeve 2 is arranged on the expansion sleeve seat 41 of the base 4, and the sealing ring expansion sleeve 2 is installed in the sealing ring body 3 in a free state.
The second cavity 12 of the guide push cylinder 1 is sleeved into the guide post 42 of the base 4 and then is pushed downwards at a constant speed, the stepped surface 13 in the guide push cylinder 1 can contact with the sealing ring body 3 in the advancing process and continuously push the sealing ring body 3 downwards along the sealing ring expansion sleeve 2, so that the sealing ring is gradually spread.
Through simple stop device or observation, when the sealing ring body 3 was propped to the biggest, take off the sealing ring expansion sleeve 2 that has the sealing ring body 3, put into the rotary part 5 terminal surface that needs the assembly sealing ring, reuse and its adaptation's sleeve is with the sealing ring body 3 push into in the seal ring groove 51, as shown in fig. 2.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. The utility model provides a sealing ring props bloated device in advance which characterized in that: the sealing device comprises a guide push cylinder, a sealing ring expansion sleeve, a sealing ring body and a base; the guide push cylinder is provided with an inner cavity, the inner cavity comprises a first cavity and a second cavity which are arranged from bottom to top, the inner diameter of the first cavity is larger than that of the second cavity, and a surface formed between the first cavity and the second cavity is a step surface; the bottom of the base is provided with a bottom support, the middle of the base is provided with a guide post, the middle upper part of the base forms an expansion sleeve seat, the expansion sleeve seat is used for sleeving a sealing ring expansion sleeve, a sealing ring body is sleeved to the sealing ring expansion sleeve, the guide push cylinder is sleeved to the base, and a first cavity of the guide push cylinder and the guide post of the base form clearance fit; and the second cavity of the guide push cylinder is used for pushing the sealing ring body from top to bottom on the sealing ring expansion sleeve.
2. A seal ring pre-expansion device as claimed in claim 1, wherein: the sealing ring expands and overlaps and install to the cover seat that expands after, forms taper cylinder section and straight section of thick bamboo that external diameter from top to bottom increases gradually, and the external diameter of taper cylinder section bottom is the same with the external diameter of straight section of thick bamboo.
3. A seal ring pre-expansion device as claimed in claim 2, wherein: the ratio of the outer diameter of the top end of the conical cylinder section to the outer diameter of the straight cylinder section is 1: 1.13.
4. A seal ring pre-expansion device as claimed in claim 1, wherein: the second cavity of the guide push cylinder is in clearance fit with the guide post of the base by adopting H7/H6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210608175.5A CN115106749B (en) | 2022-05-31 | 2022-05-31 | Sealing ring pre-supporting expansion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210608175.5A CN115106749B (en) | 2022-05-31 | 2022-05-31 | Sealing ring pre-supporting expansion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115106749A true CN115106749A (en) | 2022-09-27 |
| CN115106749B CN115106749B (en) | 2023-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210608175.5A Active CN115106749B (en) | 2022-05-31 | 2022-05-31 | Sealing ring pre-supporting expansion device |
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| Country | Link |
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| CN (1) | CN115106749B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003039257A (en) * | 2001-07-26 | 2003-02-12 | Honda Motor Co Ltd | Jig for fixing o-ring |
| CN102357868A (en) * | 2011-09-20 | 2012-02-22 | 重庆普什机械有限责任公司 | Mounting tool for spring ring |
| CN202825702U (en) * | 2012-08-23 | 2013-03-27 | 湖南天雁机械有限责任公司 | Vortex end sealing ring arrangement clamp device for turbocharger |
| CN205834639U (en) * | 2016-07-14 | 2016-12-28 | 浙江新昌展望机械有限公司 | A kind of bearing sealed ring stamper mould |
| JP2018051666A (en) * | 2016-09-27 | 2018-04-05 | 東豊工業株式会社 | Ring fitting device |
| CN110153940A (en) * | 2019-05-27 | 2019-08-23 | 武汉正光汽车装备有限公司 | Assembly tool and its assembly method for outer O-ring |
| CN214643238U (en) * | 2020-12-28 | 2021-11-09 | 天津北方天力增压技术有限公司 | Assembly fixture for sealing ring of turbocharger |
-
2022
- 2022-05-31 CN CN202210608175.5A patent/CN115106749B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003039257A (en) * | 2001-07-26 | 2003-02-12 | Honda Motor Co Ltd | Jig for fixing o-ring |
| CN102357868A (en) * | 2011-09-20 | 2012-02-22 | 重庆普什机械有限责任公司 | Mounting tool for spring ring |
| CN202825702U (en) * | 2012-08-23 | 2013-03-27 | 湖南天雁机械有限责任公司 | Vortex end sealing ring arrangement clamp device for turbocharger |
| CN205834639U (en) * | 2016-07-14 | 2016-12-28 | 浙江新昌展望机械有限公司 | A kind of bearing sealed ring stamper mould |
| JP2018051666A (en) * | 2016-09-27 | 2018-04-05 | 東豊工業株式会社 | Ring fitting device |
| CN110153940A (en) * | 2019-05-27 | 2019-08-23 | 武汉正光汽车装备有限公司 | Assembly tool and its assembly method for outer O-ring |
| CN214643238U (en) * | 2020-12-28 | 2021-11-09 | 天津北方天力增压技术有限公司 | Assembly fixture for sealing ring of turbocharger |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115106749B (en) | 2023-09-19 |
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