CN109184939A - A kind of magnesium alloy crankcase and bearing shell fit structure - Google Patents
A kind of magnesium alloy crankcase and bearing shell fit structure Download PDFInfo
- Publication number
- CN109184939A CN109184939A CN201811126224.1A CN201811126224A CN109184939A CN 109184939 A CN109184939 A CN 109184939A CN 201811126224 A CN201811126224 A CN 201811126224A CN 109184939 A CN109184939 A CN 109184939A
- Authority
- CN
- China
- Prior art keywords
- bushing
- crankcase
- bearing shell
- magnesium alloy
- fit structure
- Prior art date
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0085—Materials for constructing engines or their parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0021—Construction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0043—Arrangements of mechanical drive elements
- F02F7/0053—Crankshaft bearings fitted in the crankcase
Abstract
The present invention is a kind of magnesium alloy crankcase and bearing shell fit structure, including crankcase, bushing and bearing shell, the nested bushing between the crankcase and the bearing shell, the bushing outer side surface is equipped with spline, described bushing one end is connect with the bearing hole on crankcase using interference connection type by spline, and the other end of the bushing is connect with bearing shell using interference connection type by the inner ring of bushing；The configuration of the present invention is simple can be greatly improved the cooperation tightness of bearing shell and crankcase.
Description
Technical field
The present invention relates to engine arts, and in particular to a kind of magnesium alloy crankcase and bearing shell fit structure.
Background technique
Aero-engine is to reduce engine weight by using magnesium alloy crankcase in the case where meeting requirement
Important means.But since magnesium alloy crankcase can generate moderate finite deformation, bearing shell and crankcase under the conditions of thermal environment and high intensity
Loosening sliding phenomenon is easy to appear at bearing, it may occur that main bearing shell oil film thickness reduces, and directly affects operating and the longevity of engine
Life.
Summary of the invention
The technical problem to be solved by the present invention is to the shortcomings that overcoming the prior art, is provided more particularly to a kind of structure letter
Single magnesium alloy crankcase and bearing shell fit structure, can be greatly improved the cooperation tightness of bearing shell and crankcase.
The technical solution that the present invention solves the above technical problem is: providing a kind of magnesium alloy crankcase and bearing shell cooperation is tied
Structure, including crankcase, bushing and bearing shell, the nested bushing, the bushing and crankshaft between the crankcase and the bearing shell
Case is connected with interference fit type, and the bearing shell and bushing are connected with interference fit type, is set on the bushing outer side surface
There is spline, described bushing one end is connect with the bearing hole on crankcase using interference connection type by external splines, the bushing
The other end use interference connection type to connect with bearing shell by the inner ring of bushing.
Of the invention further limits technical solution:
Crankcase above-mentioned is made of ZM6 magnesium alloy materials, and bushing is made of 40CrNiMoA alloy steel, and bearing shell is adopted
It is made of 08F steel backing material.
It is equipped with oilhole among bushing above-mentioned, also is provided with oilhole on crankcase and bearing shell.
Crankcase above-mentioned, bushing are consistent with the oilhole axial position on bearing shell.
Spline above-mentioned is involute spline.
The beneficial effects of the present invention are: crankcase is made of ZM6 magnesium alloy materials, engine complete machine weight can reduce
Amount, but engine operating environments are complicated severe, and since its thermal deformation is smaller compared with magnesium alloy, engine behavior axis can be improved
Cooperation tightness watt with bearing block；
Bushing uses 40CrNiMoA material, and outer side surface is equipped with involute spline, can satisfy bushing limit, prevents bushing
With the relative rotation between crankcase bearing hole, bushing is connect by the spline in outside with the interference of crankcase bearing hole, spline mistake
Cooperation of being full of can guarantee to rise because of working condition environment temperature, the tightness requirement of crankcase and bushing；
Bearing shell is made of 08F steel backing material, and the inner ring of bearing shell and bushing is connected using interference, is guaranteed in engine operation process
Middle transmitted peak torque greatly reduces and loosens sliding phenomenon at bearing shell and crankcase bearing, improves the longevity of engine
Life；
Oilhole axial position on crankcase, bushing and bearing shell is consistent, can guarantee that lubricating oil is unobstructed, and bearing shell inner hole minimum oil film is thick
The foundation of degree.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the enlarged diagram of appended drawing reference 1 in Fig. 1；
Fig. 3 is bush structure schematic diagram of the present invention.
Specific embodiment
Embodiment 1
The present embodiment provides a kind of magnesium alloy crankcase and bearing shell fit structure, structure as shown in Figure 1-3, include crankcase 1,
Bushing 2 and bearing shell 3, nested bushing 2 between crankcase 1 and the bearing shell 3, and crankcase 1 are connected with bearing shell 3 by bushing 2
It connects, 2 outer side surface of bushing is equipped with involute spline 4, and described 2 one end of bushing passes through the axis on involute spline 4 and crankcase 1
Bearing bore is connected using interference connection type, and the other end of the bushing 2 is connect with bearing shell 3 using interference by the inner ring of bushing 2
Mode connects, and oilhole is equipped among bushing, also is provided with oilhole on crankcase and bearing shell, and on crankcase, bushing and bearing shell
Oilhole axial position is consistent, and crankcase is made of ZM6 magnesium alloy materials, and bushing is made of 40CrNiMoA alloy steel,
Bearing shell is made of 08F steel backing material.
The present embodiment crankcase is made of ZM6 magnesium alloy materials, can reduce engine main screw lift, but engine work
It is complicated severe to make environment, since its thermal deformation is smaller compared with magnesium alloy, engine behavior bearing shell and bearing block can be improved
Cooperation tightness,
The present embodiment bushing uses 40CrNiMoA material, and outer side surface is equipped with involute spline, can satisfy bushing limit,
The relative rotation between bushing and crankcase bearing hole is prevented, bushing is connected by the spline in outside and the interference of crankcase bearing hole
It connects, spline interference fit can guarantee to rise because of working condition environment temperature, the tightness requirement of crankcase and bushing；
The present embodiment bearing shell is made of 08F steel backing material, and the inner ring of bearing shell and bushing is connected using interference, is guaranteed in engine
The peak torque transmitted in operational process greatly reduces and loosens sliding phenomenon at bearing shell and crankcase bearing, improves hair
The service life of motivation；
Oilhole axial position on the present embodiment crankcase, bushing and bearing shell is consistent, can guarantee that lubricating oil is unobstructed, bearing shell inner hole is most
The foundation of small oil film thickness.
In addition to the implementation, the present invention can also have other embodiments.It is all to use equivalent substitution or equivalent transformation shape
At technical solution, fall within the scope of protection required by the present invention.
Claims (5)
1. a kind of magnesium alloy crankcase and bearing shell fit structure, including crankcase, bushing and bearing shell, the crankcase with it is described
The nested bushing, the bushing and crankcase are connected between bearing shell with interference fit type, and the bearing shell and bushing are with interference
Fit system connection, it is characterised in that: on the bushing outer side surface be equipped with spline, described bushing one end by external splines with
Bearing hole on crankcase is connected using interference connection type, and the other end of the bushing is used by the inner ring and bearing shell of bushing
The connection of interference connection type.
2. magnesium alloy crankcase according to claim 1 and bearing shell fit structure, it is characterised in that: the crankcase is adopted
It is made of ZM6 magnesium alloy materials, bushing is made of 40CrNiMoA alloy steel, and bearing shell is made of 08F steel backing material.
3. magnesium alloy crankcase according to claim 1 and bearing shell fit structure, it is characterised in that: among the bushing
Equipped with oilhole, oilhole also is provided on the crankcase and bearing shell.
4. magnesium alloy crankcase according to claim 3 and bearing shell fit structure, it is characterised in that: the crankcase,
Bushing is consistent with the oilhole axial position on bearing shell.
5. magnesium alloy crankcase according to claim 1 and bearing shell fit structure, it is characterised in that: the spline is gradually
Burst at the seams spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811126224.1A CN109184939A (en) | 2018-09-26 | 2018-09-26 | A kind of magnesium alloy crankcase and bearing shell fit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811126224.1A CN109184939A (en) | 2018-09-26 | 2018-09-26 | A kind of magnesium alloy crankcase and bearing shell fit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109184939A true CN109184939A (en) | 2019-01-11 |
Family
ID=64906277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811126224.1A Withdrawn CN109184939A (en) | 2018-09-26 | 2018-09-26 | A kind of magnesium alloy crankcase and bearing shell fit structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109184939A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2452941A1 (en) * | 1973-11-08 | 1975-06-26 | Tatra Np | STORAGE OF A DIVIDED CRANKSHAFT OF A COMBUSTION ENGINE IN AN UNDIVIDED TUNNEL HOUSING |
| DE3813223A1 (en) * | 1988-04-20 | 1989-11-02 | Kloeckner Humboldt Deutz Ag | Bearing reducing the transmission of structure-borne noise |
| GB2237337A (en) * | 1989-10-25 | 1991-05-01 | Fuji Heavy Ind Ltd | Crankshaft bearing |
| JPH09268945A (en) * | 1996-03-29 | 1997-10-14 | Suzuki Motor Corp | Crank shaft supporting structure |
| CN1192389A (en) * | 1997-12-12 | 1998-09-09 | 孙伟成 | Steel-backed copper alloy glass compound |
| CN1229878A (en) * | 1999-04-08 | 1999-09-29 | 卢杲 | I. C. engine cylinder using water as fuel and method of producing fuel using water |
| CN2775376Y (en) * | 2005-02-25 | 2006-04-26 | 南京金城机械有限公司 | Composite bush used in motorcycle engine crank shaft linking rod module |
| CN2895864Y (en) * | 2006-05-15 | 2007-05-02 | 浙江吉利变速器有限公司 | Jointing structure of clutch body and shaft |
| CN101968001A (en) * | 2010-10-19 | 2011-02-09 | 无锡开普动力有限公司 | Lubricating device of motor |
| CN103244234A (en) * | 2013-05-20 | 2013-08-14 | 无锡开普动力有限公司 | Oil passage structure of engine |
| CN105492748A (en) * | 2013-08-30 | 2016-04-13 | 日立工机株式会社 | Engine and engine work machine provided with same |
| CN108343672A (en) * | 2018-04-16 | 2018-07-31 | 重庆长安汽车股份有限公司 | A kind of engine bearing of low friction loss |
-
2018
- 2018-09-26 CN CN201811126224.1A patent/CN109184939A/en not_active Withdrawn
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2452941A1 (en) * | 1973-11-08 | 1975-06-26 | Tatra Np | STORAGE OF A DIVIDED CRANKSHAFT OF A COMBUSTION ENGINE IN AN UNDIVIDED TUNNEL HOUSING |
| DE3813223A1 (en) * | 1988-04-20 | 1989-11-02 | Kloeckner Humboldt Deutz Ag | Bearing reducing the transmission of structure-borne noise |
| GB2237337A (en) * | 1989-10-25 | 1991-05-01 | Fuji Heavy Ind Ltd | Crankshaft bearing |
| JPH09268945A (en) * | 1996-03-29 | 1997-10-14 | Suzuki Motor Corp | Crank shaft supporting structure |
| CN1192389A (en) * | 1997-12-12 | 1998-09-09 | 孙伟成 | Steel-backed copper alloy glass compound |
| CN1229878A (en) * | 1999-04-08 | 1999-09-29 | 卢杲 | I. C. engine cylinder using water as fuel and method of producing fuel using water |
| CN2775376Y (en) * | 2005-02-25 | 2006-04-26 | 南京金城机械有限公司 | Composite bush used in motorcycle engine crank shaft linking rod module |
| CN2895864Y (en) * | 2006-05-15 | 2007-05-02 | 浙江吉利变速器有限公司 | Jointing structure of clutch body and shaft |
| CN101968001A (en) * | 2010-10-19 | 2011-02-09 | 无锡开普动力有限公司 | Lubricating device of motor |
| CN103244234A (en) * | 2013-05-20 | 2013-08-14 | 无锡开普动力有限公司 | Oil passage structure of engine |
| CN105492748A (en) * | 2013-08-30 | 2016-04-13 | 日立工机株式会社 | Engine and engine work machine provided with same |
| CN108343672A (en) * | 2018-04-16 | 2018-07-31 | 重庆长安汽车股份有限公司 | A kind of engine bearing of low friction loss |
Non-Patent Citations (2)
| Title |
|---|
| 傅玉灿等: "《难加工材料高效加工技术》", 31 March 2016, 西北工业大学出版社 * |
| 刘雄健等: "《金属材料与热处理》", 30 June 2017, 电子科技大学出版社 * |
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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: 20190111 |
|
| WW01 | Invention patent application withdrawn after publication |