CN107524480B - Turbocharger bearing body structure with integral ball bearing - Google Patents
Turbocharger bearing body structure with integral ball bearing Download PDFInfo
- Publication number
- CN107524480B CN107524480B CN201710609967.3A CN201710609967A CN107524480B CN 107524480 B CN107524480 B CN 107524480B CN 201710609967 A CN201710609967 A CN 201710609967A CN 107524480 B CN107524480 B CN 107524480B
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- Prior art keywords
- hole
- bearing
- oil inlet
- bearing body
- oil
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/18—Lubricating arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/14—Lubrication of pumps; Safety measures therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
-
- 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)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The turbocharger bearing body structure with the integral ball bearing comprises a bearing body, the integral ball bearing, a positioning pin and an oil inlet bolt; the integral ball bearing is arranged in a bearing hole of the bearing body; the upper end of the locating pin is arranged in a pin hole A of the bearing body, the lower end of the locating pin is inserted into a pin hole B of the outer ring of the integral ball bearing, and the outer ring of the integral ball bearing is fixedly connected with the bearing body; the lower end of the oil inlet bolt is in threaded connection with the internal threaded hole of the bearing body, and the upper end of the oil inlet bolt is positioned outside the bearing body. The invention has the advantages that only a single integral ball bearing is adopted in the inner hole of the bearing body, and compared with the existing structure adopting two floating bearings, the structure of the scheme is simpler and the assembly is more convenient. An annular oil storage cavity is formed between the lower end face of the oil inlet bolt and the outer wall of the locating pin and the hole wall of the stepped hole, so that the problem of delayed oil supply of lubricating oil during engine starting is solved, and dry friction of the integral ball bearing during initial rotation is avoided.
Description
Technical Field
The invention relates to a bearing body structure of a turbocharger, in particular to a bearing body structure of a turbocharger with an integral ball bearing.
Background
In recent years, turbochargers adopting ball bearings are increasingly receiving attention from home and abroad due to excellent mechanical efficiency and transient response capability, but because the rotating speed of the turbochargers is high, the general working rotating speed can reach hundreds of thousands of revolutions per minute, and the highest rotating speed can reach hundreds of thousands of revolutions per minute, the working condition of the ball bearings is bad, and the requirements on reliability are higher. Therefore, how to prolong the service life of the ball bearing and reduce the vibration and noise of the ball bearing under high-speed rotation is the focus of research in the industry at present.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a turbocharger bearing body structure with an integral ball bearing, which has the advantages of simple structure, full lubrication and good reliability.
The technical scheme of the invention is as follows: the turbocharger bearing body structure with the integral ball bearing comprises a bearing body, the integral ball bearing, a positioning pin and an oil inlet bolt;
the bearing body is internally provided with an axial bearing hole, the outer wall of the bearing body is provided with a radial stepped hole, the stepped hole is communicated with the bearing hole, a section of the stepped hole, which is close to the outer wall of the bearing body, is an internal threaded hole, and a section of the stepped hole, which is close to the bearing hole of the bearing body, is a pin hole A; an oil inlet is arranged in the bearing body, one end of the oil inlet is provided with an oil outlet port, and the other end of the oil inlet is provided with an oil inlet port;
The integral ball bearing is arranged in a bearing hole of the bearing body, a pin hole B and a lubrication oil supply hole are arranged on the outer ring of the integral ball bearing, and the lubrication oil supply hole is communicated with an oil outlet port of an oil inlet hole of the bearing body;
An oil channel is arranged in the positioning pin, and an oil inlet and an oil outlet are formed on the outer wall of the positioning pin by the oil channel; the upper end of the locating pin is arranged in a pin hole A of the bearing body, the lower end of the locating pin is inserted into a pin hole B of the outer ring of the integral ball bearing, and the outer ring of the integral ball bearing is fixedly connected with the bearing body;
The lower end of the oil inlet bolt is in threaded connection with an internal threaded hole of the bearing body, the upper end of the oil inlet bolt is positioned outside the bearing body, an inner hole penetrating through the upper end face and the lower end face of the oil inlet bolt is arranged in the oil inlet bolt, and an outlet at the lower end of the inner hole is communicated with an oil inlet of the locating pin oil path channel; an annular oil storage cavity is formed between the lower end face of the oil inlet bolt and the outer wall of the locating pin and the hole wall of the stepped hole, and is simultaneously communicated with the oil outlet of the locating pin oil path channel and the oil inlet port of the bearing body oil inlet hole.
The invention further adopts the technical scheme that: the integral ball bearing comprises an outer ring, an inner ring, ceramic ball rolling bodies and a retainer; the ceramic ball rolling bodies are arranged in two rows, are respectively arranged in the two rows of retainers, are positioned between the inner ring and the outer ring, and are respectively positioned at two ends of the integral ball bearing in the axial direction.
The invention further adopts the technical scheme that: the aperture of the narrowest part of the lubrication oil supply hole of the integral ball bearing is L, and the aperture of the oil inlet hole of the bearing body is H, L: h=1: 2-3.
The invention further adopts the technical scheme that: a gap is arranged between the lower end face of the oil inlet bolt and the upper end face of the locating pin.
Compared with the prior art, the invention has the following advantages:
1. the bearing body is characterized in that only a single integral ball bearing is adopted in an inner hole of the bearing body, and compared with the existing structure adopting two floating bearings, the structure is simpler, and the assembly is more convenient.
2. An annular oil storage cavity is formed between the lower end face of the oil inlet bolt and the outer wall of the locating pin and the hole wall of the stepped hole, so that the problem of delayed oil supply of lubricating oil during engine starting is solved, and dry friction of the integral ball bearing during initial rotation is avoided.
3. The aperture of the narrowest part of the lubricating oil supply hole is smaller than that of the oil inlet hole, and the structure can enable oil sprayed out of the lubricating oil supply hole to be atomized, so that the integral ball bearing can be lubricated more fully, heat can be taken away, abrasion of the integral ball bearing is reduced, and service life of the integral ball bearing is prolonged.
4. A gap is arranged between the lower end face of the oil inlet bolt and the upper end face of the locating pin, and the gap is communicated with the annular oil storage cavity, so that oil is not completely cut off even if an oil path channel in the locating pin is blocked.
The invention is further described below with reference to the drawings and examples.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a bearing body according to the present invention;
fig. 3 is an enlarged view of a portion a of fig. 1;
Fig. 4 is an enlarged view of a portion B of fig. 1.
Detailed Description
Example 1:
as shown in fig. 1 to 4, the turbocharger bearing body structure with the integral ball bearing includes a bearing body 1, an integral ball bearing, a positioning pin 3, and an oil feed bolt 4.
The bearing body 1 is internally provided with an axial bearing hole 11, the outer wall of the bearing body 1 is provided with a radial stepped hole, the stepped hole is communicated with the bearing hole 11, a section of the stepped hole, which is close to the outer wall of the bearing body 1, is an internal threaded hole 121, and a section of the stepped hole, which is close to the bearing hole 11 of the bearing body 1, is a pin hole A122; an oil inlet hole 13 is arranged in the bearing body 1, one end of the oil inlet hole 13 is provided with an oil outlet port 131, and the other end is provided with an oil inlet port 132.
The integral ball bearing is mounted in the bearing hole 11 of the bearing body 1. The integral ball bearing comprises an outer ring 21, an inner ring 22, ceramic ball rolling bodies 23 and a retainer 24, wherein the outer ring 21 is provided with a pin hole B and a lubrication oil supply hole 212, the lubrication oil supply hole 212 is communicated with an oil outlet port 131 of an oil inlet hole 13 of the bearing body 1, the ceramic ball rolling bodies 23 are arranged in two rows, and the ceramic ball rolling bodies 23 are respectively arranged in the two rows of the retainer 24, positioned between the inner ring 22 and the outer ring 21 and respectively positioned at two ends of the axial direction of the integral ball bearing.
The locating pin 3 is internally provided with an oil path channel 31, and the oil path channel 31 forms an oil inlet 311 and an oil outlet 312 on the outer wall of the locating pin 3; the upper end of the positioning pin 3 is installed in the pin hole A122 of the bearing body 1, and the lower end is inserted into the pin hole B of the outer ring 21 of the integral ball bearing, so that the outer ring 21 of the integral ball bearing is fixedly connected with the bearing body 1.
The lower end of the oil inlet bolt 4 is in threaded connection with an internal threaded hole 121 of the bearing body 1, the upper end of the oil inlet bolt is positioned outside the bearing body 1, an inner hole 41 penetrating through the upper end surface and the lower end surface of the oil inlet bolt is arranged in the oil inlet bolt, and the outlet of the lower end of the inner hole 41 is communicated with an oil inlet 311 of an oil path channel 31 of the positioning pin 3; an annular oil storage cavity 5 is formed between the lower end face of the oil inlet bolt 4 and the outer wall of the positioning pin 3 and the hole wall of the stepped hole, and the annular oil storage cavity 5 is simultaneously communicated with the oil outlet 312 of the oil path channel 31 of the positioning pin 3 and the oil inlet port 132 of the oil inlet hole 13 of the bearing body 1.
Preferably, the bore diameter of the narrowest part of the lubrication oil supply hole 212 of the integral ball bearing is L, and the bore diameter of the oil inlet hole 13 of the bearing body 1 is H, L: h=1: 2.5.
Preferably, a gap is arranged between the lower end face of the oil inlet bolt 4 and the upper end face of the positioning pin 3.
Claims (1)
1. Turbocharger bearing body structure with integral ball bearing, characterized by: comprises a bearing body (1), an integral ball bearing, a locating pin (3) and an oil inlet bolt (4); an axial bearing hole (11) is arranged in the bearing body (1), a radial stepped hole is arranged on the outer wall of the bearing body (1), and the stepped hole is connected
The bearing body is communicated with a bearing hole (11), the section of the stepped hole, which is close to the outer wall of the bearing body (1), is an internal threaded hole (121), and the section of the stepped hole, which is close to the bearing hole (11) of the bearing body (1), is a pin hole A (122); an oil inlet hole (13) is arranged in the bearing body (1), and one end of the oil inlet hole (13) is provided with
The opening is an oil outlet port (131), and the other end opening is an oil inlet port (132); the integral ball bearing is arranged in a bearing hole (11) of the bearing body (1), a pin hole B and a lubrication oil supply hole (212) are arranged on an outer ring (21) of the integral ball bearing, and the lubrication oil supply hole (212) is communicated with an oil outlet port (131) of an oil inlet hole (13) of the bearing body (1);
an oil path channel (31) is arranged in the positioning pin (3), and the oil path channel (31) forms an oil inlet (311) and an oil outlet (312) on the outer wall of the positioning pin (3); the upper end of the locating pin (3) is arranged in the pin hole A (122) of the bearing body (1), and the lower end is inserted into the whole
In the pin hole B of the body ball bearing outer ring (21), the outer ring (21) of the integral ball bearing is fixedly connected with the bearing body (1);
the lower end of the oil inlet bolt (4) is in threaded connection with an internal threaded hole (121) of the bearing body (1), the upper end of the oil inlet bolt is positioned outside the bearing body (1), an inner hole (41) penetrating through the upper end face and the lower end face of the oil inlet bolt is arranged in the oil inlet bolt, and an oil path channel (31) of the locating pin (3) is arranged at the lower end outlet of the inner hole (41)
Is communicated with an oil inlet (311); an annular oil storage cavity (5) is formed between the lower end face of the oil inlet bolt (4) and the outer wall of the locating pin (3) and the hole wall of the stepped hole, and the annular oil storage cavity (5) is simultaneously connected with an oil outlet (312) of an oil path channel (31) of the locating pin (3) and a bearing
An oil inlet port (132) of the oil inlet hole (13) of the body (1) is communicated;
a gap is arranged between the lower end surface of the oil inlet bolt (4) and the upper end surface of the positioning pin (3);
The integral ball bearing comprises an outer ring (21), an inner ring (22), ceramic ball rolling bodies (23) and a retainer (24); the ceramic ball rolling bodies (23) are provided with two rows, are respectively arranged in the two rows of retainers (24), are positioned between the inner ring (22) and the outer ring (21), and are respectively positioned at two ends of the integral ball bearing in the axial direction;
the bore diameter of the narrowest part of the lubrication oil supply hole (212) of the integral ball bearing is L, and the bore diameter of the oil inlet hole (13) of the bearing body (1) is H, L: h=1: 2.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710609967.3A CN107524480B (en) | 2017-07-25 | 2017-07-25 | Turbocharger bearing body structure with integral ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710609967.3A CN107524480B (en) | 2017-07-25 | 2017-07-25 | Turbocharger bearing body structure with integral ball bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107524480A CN107524480A (en) | 2017-12-29 |
| CN107524480B true CN107524480B (en) | 2024-04-19 |
Family
ID=60680033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710609967.3A Active CN107524480B (en) | 2017-07-25 | 2017-07-25 | Turbocharger bearing body structure with integral ball bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107524480B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11486268B2 (en) | 2018-01-15 | 2022-11-01 | Garrett Transportation I Inc. | Turbocharger assembly |
| CN110005480A (en) * | 2019-04-02 | 2019-07-12 | 中国北方发动机研究所(天津) | A kind of TC bearings body structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730914A (en) * | 2005-09-01 | 2006-02-08 | 黄若 | Mixed ceramic ball bearing turbine supercharger |
| CN201818336U (en) * | 2010-10-12 | 2011-05-04 | 湖南天雁机械有限责任公司 | Turbocharger bearing body with oil chamber |
| CN102338158A (en) * | 2011-09-15 | 2012-02-01 | 西安交通大学 | Elastic ring and integral-type elastic ring damper utilizing same |
| JP2014125920A (en) * | 2012-12-26 | 2014-07-07 | Nsk Ltd | Turbocharger |
| CN207245772U (en) * | 2017-07-25 | 2018-04-17 | 湖南天雁机械有限责任公司 | Turbocharger bearing body structure with overall ball bearing |
-
2017
- 2017-07-25 CN CN201710609967.3A patent/CN107524480B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730914A (en) * | 2005-09-01 | 2006-02-08 | 黄若 | Mixed ceramic ball bearing turbine supercharger |
| CN201818336U (en) * | 2010-10-12 | 2011-05-04 | 湖南天雁机械有限责任公司 | Turbocharger bearing body with oil chamber |
| CN102338158A (en) * | 2011-09-15 | 2012-02-01 | 西安交通大学 | Elastic ring and integral-type elastic ring damper utilizing same |
| JP2014125920A (en) * | 2012-12-26 | 2014-07-07 | Nsk Ltd | Turbocharger |
| CN207245772U (en) * | 2017-07-25 | 2018-04-17 | 湖南天雁机械有限责任公司 | Turbocharger bearing body structure with overall ball bearing |
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| Publication number | Publication date |
|---|---|
| CN107524480A (en) | 2017-12-29 |
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