CN111623043B - Sliding bearing combined assembly method for exhaust gas turbocharger rotor - Google Patents
Sliding bearing combined assembly method for exhaust gas turbocharger rotor Download PDFInfo
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- CN111623043B CN111623043B CN202010507079.2A CN202010507079A CN111623043B CN 111623043 B CN111623043 B CN 111623043B CN 202010507079 A CN202010507079 A CN 202010507079A CN 111623043 B CN111623043 B CN 111623043B
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- bearing
- pressure end
- vortex
- radial bearing
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
- Supercharger (AREA)
Abstract
The invention discloses a sliding bearing combined assembly method for an exhaust gas turbocharger rotor, and the combined sliding bearing has the characteristics of strong stability, strong impact resistance and better bearing capacity than a common oil film bearing. The method comprises the following steps: s1, knocking the cylindrical pin into the radial bearing at the vortex end by using a copper rod; s2, clamping the retainer ring into the thrust bearing; s3, the radial bearing of the vortex end is arranged into a bearing seat and is fixed by screws; s4, mounting a thrust bearing; s5, aligning to the screw hole, sequentially installing a pressure end adjusting washer and a pressure end radial bearing into the bearing seat, and screwing down by using screws; s6, measuring the total length of the sliding bearing, disassembling a pressure end adjusting washer and a pressure end radial bearing, and grinding the thickness of the pressure end adjusting washer to ensure that the total length of the sliding bearing is A +/-0.05 mm of the design size; and S7, after grinding, sequentially installing a pressure end adjusting washer and a pressure end radial bearing and fixing by using screws.
Description
Technical Field
The invention relates to the technical field of turbochargers, in particular to a sliding bearing combined assembly method for an exhaust gas turbocharger rotor.
Background
The rotor component is the core component of the exhaust gas turbocharger and the bearings are the essential parts for supporting the rotor. The bearing mainly comprises a rolling bearing and a sliding bearing, and the sliding bearing has a simple structure, strong bearing capacity and good impact resistance, so that the supercharger can use the sliding bearing more selectively. As an important part of the supercharger, a sliding bearing installation method is the core for ensuring the normal operation of the sliding bearing. Generally, only one sliding bearing is required for each end of the rotor shaft as a support. While the sliding bearing is floating during operation, the prior sliding bearing mounting method generally uses a positioning pin to position the sliding bearing on the bearing seat.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a sliding bearing combined assembly method for an exhaust gas turbocharger rotor.
The purpose of the invention is realized as follows:
a sliding bearing combination assembly method for an exhaust-gas turbocharger rotor, comprising the steps of:
s1, knocking the cylindrical pin into the radial bearing at the vortex end by using a copper rod;
s2, clamping the retainer ring into the thrust bearing;
s3, the radial bearing of the vortex end is arranged into a bearing seat and is fixed by screws;
s4, mounting a thrust bearing
S4.1, aligning the cylindrical pin, and installing a plurality of bearing washers and at least one vortex end adjusting washer;
s4.2, aligning the cylindrical pin, tightening the clamping ring by using clamping ring pliers, installing the thrust bearing into the bearing seat, and then loosening the clamping ring pliers to enable the clamping ring to be completely clamped into the bearing seat;
s4.3, on a bearing press machine, using a bearing measuring tool, and requiring the axial movement amount of the thrust bearing to be 0.2-0.4 mm under the pressure of 1000N; if the requirement is not met, increasing or decreasing the number of the vortex end adjusting washers according to the measuring result, and then measuring the movement amount again until the requirement is met;
s5, aligning to the screw hole, sequentially installing a pressure end adjusting washer and a pressure end radial bearing into the bearing seat, and screwing down by using screws;
s6, measuring the total length of the sliding bearing, disassembling a pressure end adjusting washer and a pressure end radial bearing, and grinding the thickness of the pressure end adjusting washer to ensure that the total length of the sliding bearing is A +/-0.05 mm of the design size;
and S7, after grinding, sequentially installing a pressure end adjusting washer and a pressure end radial bearing and fixing by using screws.
Preferably, the number of the bearing washers is greater than or equal to 6, and the number of the adjusting washers is less than or equal to 3.
Preferably, in S4.1, one of the vortex end adjusting washers abuts the thrust bearing.
Preferably, in S4.1, when the number of the vortex end adjusting washers is equal to or greater than two, one of the vortex end adjusting washers is attached to the vortex end flange, and when the number of the vortex end adjusting washers is three, one of the vortex end adjusting washers is disposed between two bearing washers in the middle.
Preferably, in S7, the fixing screw of the pressure end radial bearing is fitted with a locking washer, and if the fixing screw of the pressure end radial bearing is higher than the outer end face of the pressure end radial bearing, the locking washer is ground so that the fixing screw of the pressure end radial bearing is lower than the outer end face of the pressure end radial bearing.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
when the two bearings (the vortex end radial bearing and the thrust bearing) are installed, a structure is needed to separate the two bearings, so that an oil path is smooth, and the working requirement is met.
The relative position of the sliding bearing on the shaft is positioned through the bearing seat, and the axial size of the sliding bearing needs to be ensured during installation, so that the axial clearance of the sliding bearing during working is ensured, and the thickness of an oil film on a thrust surface of the sliding bearing is ensured.
The invention ensures the axial clearance of the bearing by adjusting the adjusting washer between the sliding bearings, and can visually detect the displacement of the sliding bearings by using a bearing press machine, thereby evaluating whether the bearing is installed in place or not. The installation requirement of the sliding bearing is ensured, and the bearing is ensured to be in a normal working state.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a partially enlarged view of the drawing;
FIG. 3 is a cross-sectional view of a bearing washer;
fig. 4 is a schematic structural view of a bearing washer.
Reference numerals
In the attached drawings, 1, a pressure end radial bearing; 2. a pressure end adjustment washer; 3. a bearing seat; 4. a cylindrical pin; 5. a collar; 6. a bearing washer; 7. a vortex end adjustment washer; 8. a vortex end radial bearing; 9. a thrust bearing; 10. a socket head cap screw; 11. a locking washer; 12. little hexagon head screw.
Detailed Description
A sliding bearing combination assembly method for an exhaust-gas turbocharger rotor, comprising the steps of:
s1, knocking the cylindrical pin into the radial bearing at the vortex end by using a copper rod;
s2, clamping the retainer ring into the thrust bearing;
s3, the radial bearing of the vortex end is arranged into a bearing seat and is fixed by screws;
s4, mounting a thrust bearing
S4.1, aligning the cylindrical pin, and installing a plurality of bearing washers and at least one vortex end adjusting washer;
the quantity of the bearing washers is determined by calculating the thickness of an oil film through the bearing capacity so as to determine the size of a gap (the quantity is too large and the reliability of the bearing is reduced in relation to the use performance of the supercharger); the thickness of a single gasket is required to ensure that the adjusted value is within a range according to the adjusted gap range, namely the tolerance value of the gap, in the embodiment, the number of the bearing gaskets is greater than or equal to 6, and the number of the adjusting gaskets is less than or equal to 3.
One of the vortex end adjusting washers is attached to the thrust bearing.
When the number of the vortex end adjusting washers is more than or equal to two, one of the vortex end adjusting washers is attached to the vortex end flange, and when the number of the vortex end adjusting washers is three, one of the vortex end adjusting washers is arranged between the two bearing washers in the middle.
S4.2, aligning the cylindrical pin, tightening the clamping ring by using clamping ring pliers, installing the thrust bearing into the bearing seat, and then loosening the clamping ring pliers to enable the clamping ring to be completely clamped into the bearing seat;
s4.3, on a bearing press machine, using a bearing measuring tool, and requiring the axial movement amount of the thrust bearing to be 0.2-0.4 mm under the pressure of 1000N; if the requirement is not met, increasing or decreasing the number of the vortex end adjusting washers according to the measuring result, and then measuring the movement amount again until the requirement is met;
s5, aligning to the screw hole, sequentially installing a pressure end adjusting washer and a pressure end radial bearing into the bearing seat, and screwing down by using screws;
s6, measuring the total length of the sliding bearing, disassembling a pressure end adjusting washer and a pressure end radial bearing, and grinding the thickness of the pressure end adjusting washer to ensure that the total length of the sliding bearing is A +/-0.05 mm of the design size;
and S7, after grinding, sequentially installing a pressure end adjusting washer and a pressure end radial bearing and fixing by using screws.
And if the fixing screw of the pressure end radial bearing is higher than the outer end surface of the pressure end radial bearing, the locking gasket is polished to enable the fixing screw of the pressure end radial bearing to be lower than the outer end surface of the pressure end radial bearing.
The sliding bearing assembled by the combination of the invention comprises a bearing seat which is cylindrical, and two ends of the bearing seat are respectively provided with a T-shaped mounting hole;
a pressure end radial bearing is fixedly arranged in the small-diameter section of the T-shaped mounting hole of the pressure end of the bearing seat, a pressure end flange is arranged at the outer end of the pressure end radial bearing and is positioned in the large-diameter section corresponding to the T-shaped mounting hole, and at least one pressure end adjusting washer is arranged between the pressure end flange and the step surface corresponding to the T-shaped mounting hole and is used for adjusting the axial distance;
a vortex end radial bearing is fixedly arranged in a small-diameter section of a T-shaped mounting hole of a vortex end of a bearing block, a vortex end flange and a mounting section are arranged on the vortex end radial bearing, the vortex end flange and the mounting section are positioned in a large-diameter section corresponding to the T-shaped mounting hole, the mounting section is positioned outside the vortex end flange, a thrust bearing is sleeved on the mounting section of the vortex end radial bearing, the thrust bearing is axially positioned on the wall of the large-diameter section corresponding to the T-shaped mounting hole through a clamping ring, a bearing gasket and a vortex end adjusting gasket are sequentially arranged between the vortex end flange and the thrust bearing, and the vortex end radial bearing, the bearing gasket, the vortex end adjusting gasket and the thrust bearing are connected in series through cylindrical pins;
the bearing washer is arc-shaped in the end face direction in a bending mode, the bearing washer is made of elastic materials and is provided with a groove, and the vortex end adjusting washer is used for adjusting the axial distance.
The opposite ends of the pressure end radial bearing and the vortex end radial bearing are in clearance fit with the small-diameter section of the corresponding T-shaped mounting hole, and the pressure end flange and the vortex end flange are fixed on the bearing seat through axial screws.
The vortex end adjusting washer has a smaller thickness than the bearing washer.
And a spigot is arranged at an orifice of the T-shaped mounting hole at the vortex end of the bearing seat and used for axially positioning the clamping ring.
The bearing frame is including the connecting cylinder that is located the middle part to and be fixed in the installation section of thick bamboo at connecting cylinder both ends, be equipped with the hole that supplies lubricating oil to pass through on the connecting cylinder, pressure end radial bearing, whirlpool end radial bearing and thrust bearing all install on the installation section of thick bamboo that corresponds.
The pressure end radial bearing, the vortex end radial bearing and the thrust bearing are all sliding bearings.
The bearing washer is provided with a plurality of grooves, and the grooves of the adjacent bearing washers deflect by 60 degrees along the circumferential direction.
When the lubricating oil enters the sliding bearing, an oil film is formed on the end surface of the sliding bearing. When the rotor and the sliding bearing normally work, the crescent-shaped structure of the bearing washer 3 changes the bending radius of the gasket according to the size of the impact load, so that the thickness of an oil film formed on the surface of the gasket is changed, the function of the crescent-shaped structure is similar to that of a spring, the deformation amount of the crescent-shaped structure is small, and the crescent-shaped structure is ensured to be in the range of elastic deformation. Therefore, the crescent-shaped gasket can well respond to the change of the rotor load, thereby improving the shock resistance and the bearing capacity of the bearing.
The invention is formed by combining three sliding bearings. The bearing in the form has the characteristics of strong stability, strong impact resistance and better bearing capacity than a common oil film bearing.
The sliding bearing provided by the invention is provided with the bearing gasket, the gasket is in a meniscus shape, is arranged between the bearing and is used for forming a spring structure together with an oil film, so that the impact resistance and the bearing capacity of the bearing are enhanced. The rotor structure is beneficial to resisting impact of high load, and the end face of the bearing is protected under the condition that the axial force of the rotor suddenly changes, so that the service life of the bearing is prolonged.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (3)
1. A method of assembling a sliding bearing assembly for an exhaust-gas turbocharger rotor, comprising the steps of:
s1, knocking the cylindrical pin into the radial bearing at the vortex end by using a copper rod;
s2, clamping the retainer ring into the thrust bearing;
s3, the radial bearing of the vortex end is arranged into a bearing seat and is fixed by screws;
s4, mounting a thrust bearing
S4.1, aligning the cylindrical pin, and installing a plurality of bearing washers and at least one vortex end adjusting washer; the number of the bearing washers is more than or equal to 6, and the number of the adjusting washers is less than or equal to 3; s4.1, attaching one of the vortex end adjusting washers to the thrust bearing;
s4.2, aligning the cylindrical pin, tightening the clamping ring by using clamping ring pliers, installing the thrust bearing into the bearing seat, and then loosening the clamping ring pliers to enable the clamping ring to be completely clamped into the bearing seat;
s4.3, on a bearing press machine, using a bearing measuring tool, and requiring the axial movement amount of the thrust bearing to be 0.2-0.4 mm under the pressure of 1000N; if the requirement is not met, increasing or decreasing the number of the vortex end adjusting washers according to the measuring result, and then measuring the movement amount again until the requirement is met;
s5, aligning to the screw hole, sequentially installing a pressure end adjusting washer and a pressure end radial bearing into the bearing seat, and screwing down by using screws;
s6, measuring the total length of the sliding bearing, disassembling a pressure end adjusting washer and a pressure end radial bearing, and grinding the thickness of the pressure end adjusting washer to ensure that the total length of the sliding bearing is A +/-0.05 mm of the design size;
and S7, after grinding, sequentially installing a pressure end adjusting washer and a pressure end radial bearing and fixing by using screws.
2. A sliding bearing combination assembling method for an exhaust turbocharger rotor according to claim 1, characterized in that: and S4.1, when the number of the vortex end adjusting washers is more than or equal to two, one of the vortex end adjusting washers is attached to the vortex end flange, and when the number of the vortex end adjusting washers is three, one of the vortex end adjusting washers is arranged between the two bearing washers in the middle.
3. A sliding bearing combination assembling method for an exhaust turbocharger rotor according to claim 1, characterized in that: in S7, the fixing screw of the pressure end radial bearing is fitted with a locking washer, and if the fixing screw of the pressure end radial bearing is higher than the outer end face of the pressure end radial bearing, the locking washer is polished to make the fixing screw of the pressure end radial bearing lower than the outer end face of the pressure end radial bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010507079.2A CN111623043B (en) | 2020-06-05 | 2020-06-05 | Sliding bearing combined assembly method for exhaust gas turbocharger rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010507079.2A CN111623043B (en) | 2020-06-05 | 2020-06-05 | Sliding bearing combined assembly method for exhaust gas turbocharger rotor |
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| Publication Number | Publication Date |
|---|---|
| CN111623043A CN111623043A (en) | 2020-09-04 |
| CN111623043B true CN111623043B (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010507079.2A Active CN111623043B (en) | 2020-06-05 | 2020-06-05 | Sliding bearing combined assembly method for exhaust gas turbocharger rotor |
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| CN (1) | CN111623043B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4355850A (en) * | 1980-04-02 | 1982-10-26 | Toyota Jidosha Kogyo Kabushiki Kaisha | Bearing of a turbomachine |
| US4358253A (en) * | 1980-04-01 | 1982-11-09 | Toyota Jidosha Kogyo Kabushiki Kaisha | Turbocharger for use in an internal combustion engine |
| JP2002070847A (en) * | 2000-08-25 | 2002-03-08 | Mitsubishi Heavy Ind Ltd | Thrust bearing |
| CN102562263A (en) * | 2012-01-18 | 2012-07-11 | 潍坊富源增压器有限公司 | Turbocharger |
| DE202014002981U1 (en) * | 2014-04-08 | 2014-04-16 | Man Diesel & Turbo Se | Axial turbine for an exhaust gas turbocharger |
| CN204140200U (en) * | 2014-09-17 | 2015-02-04 | 宁波威孚天力增压技术有限公司 | A kind of novel turbocharger |
| CN205371310U (en) * | 2015-05-19 | 2016-07-06 | 罗立峰 | Gaseous footstep bearing of hybrid dynamic pressure |
| KR20170061505A (en) * | 2015-11-26 | 2017-06-05 | 한온시스템 주식회사 | Air foil bearing |
| CN206386155U (en) * | 2016-12-08 | 2017-08-08 | 湖南天雁机械有限责任公司 | Assembled sliding bearing turbocharger rotor-support-foundation system |
| JP2018013162A (en) * | 2016-07-20 | 2018-01-25 | Ntn株式会社 | Foil bearing |
| WO2018195158A1 (en) * | 2017-04-19 | 2018-10-25 | Borgwarner Inc. | Wave spring with intermediate layer |
| CN209129739U (en) * | 2018-12-11 | 2019-07-19 | 重庆江增船舶重工有限公司 | Sealing structure at pressure end of turbocharger |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008064299A1 (en) * | 2008-12-20 | 2010-07-01 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | loader |
-
2020
- 2020-06-05 CN CN202010507079.2A patent/CN111623043B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4358253A (en) * | 1980-04-01 | 1982-11-09 | Toyota Jidosha Kogyo Kabushiki Kaisha | Turbocharger for use in an internal combustion engine |
| US4355850A (en) * | 1980-04-02 | 1982-10-26 | Toyota Jidosha Kogyo Kabushiki Kaisha | Bearing of a turbomachine |
| JP2002070847A (en) * | 2000-08-25 | 2002-03-08 | Mitsubishi Heavy Ind Ltd | Thrust bearing |
| CN102562263A (en) * | 2012-01-18 | 2012-07-11 | 潍坊富源增压器有限公司 | Turbocharger |
| DE202014002981U1 (en) * | 2014-04-08 | 2014-04-16 | Man Diesel & Turbo Se | Axial turbine for an exhaust gas turbocharger |
| CN204140200U (en) * | 2014-09-17 | 2015-02-04 | 宁波威孚天力增压技术有限公司 | A kind of novel turbocharger |
| CN205371310U (en) * | 2015-05-19 | 2016-07-06 | 罗立峰 | Gaseous footstep bearing of hybrid dynamic pressure |
| KR20170061505A (en) * | 2015-11-26 | 2017-06-05 | 한온시스템 주식회사 | Air foil bearing |
| JP2018013162A (en) * | 2016-07-20 | 2018-01-25 | Ntn株式会社 | Foil bearing |
| CN206386155U (en) * | 2016-12-08 | 2017-08-08 | 湖南天雁机械有限责任公司 | Assembled sliding bearing turbocharger rotor-support-foundation system |
| WO2018195158A1 (en) * | 2017-04-19 | 2018-10-25 | Borgwarner Inc. | Wave spring with intermediate layer |
| CN209129739U (en) * | 2018-12-11 | 2019-07-19 | 重庆江增船舶重工有限公司 | Sealing structure at pressure end of turbocharger |
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|---|---|
| CN111623043A (en) | 2020-09-04 |
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