CN108775338A - A kind of Double-conical-surface bearing shell - Google Patents

A kind of Double-conical-surface bearing shell Download PDF

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Publication number
CN108775338A
CN108775338A CN201810510935.2A CN201810510935A CN108775338A CN 108775338 A CN108775338 A CN 108775338A CN 201810510935 A CN201810510935 A CN 201810510935A CN 108775338 A CN108775338 A CN 108775338A
Authority
CN
China
Prior art keywords
conical
bearing
double
bearing shell
sides
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.)
Pending
Application number
CN201810510935.2A
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Chinese (zh)
Inventor
赵滨
刘冲培
李玩幽
卢熙群
黄福战
徐含章
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harbin Engineering University
Original Assignee
Harbin Engineering University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Harbin Engineering University filed Critical Harbin Engineering University
Priority to CN201810510935.2A priority Critical patent/CN108775338A/en
Publication of CN108775338A publication Critical patent/CN108775338A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • 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
    • F16C2360/00—Engines or pumps
    • F16C2360/22—Internal combustion engines

Abstract

The present invention is to provide a kind of Double-conical-surface bearing shells.A part of material is symmetrically cut in inner surface of bearing bush axial edge both sides and forms two conical surfaces, and conical surface apex has chamfering.The present invention symmetrically cuts a part of material on the basis of plain bushing, in inner surface of bearing bush axial edge both sides, forms two conical surfaces, and conical surface apex carries out chamfered.The marginal gap for increasing bearing alleviates bearing shell edge abrasion, extends the service life of bearing, improves the reliabilities of operation such as diesel engine and durability.

Description

A kind of Double-conical-surface bearing shell
Technical field
The present invention relates to a kind of sliding bearing, especially a kind of bearing shell.
Background technology
Sliding bearing is important one of the friction pair such as diesel engine, and greasy property is directly related to the reliability of diesel engine With durability.In actual operation, due to factors such as journal misalignment, bearing surface pattern effect and surface thermoelastic distortions Effect, bearing shell edge abrasion are serious.This severe exacerbation lubrication state of bearing, shortens the service life of bearing, reduces The reliabilities of operation such as diesel engine and durability.
Invention content
The purpose of the present invention is to provide the Double-conical-surface bearing shells of a kind of reliability that can improve mechanical movement and durability.
The object of the present invention is achieved like this：A part of material shape is symmetrically cut in inner surface of bearing bush axial edge both sides At two conical surfaces, conical surface apex has chamfering.
The present invention can also include：
1. the inner surface of the bearing shell is coated with one layer of antifriction alloy.
2.LyAxial width, L for the conical surfacezRadial height, l for the conical surfacey=Ly/d、lz=Lz/ d, d is axis Tilt sickness, then lyWith lzThe condition of satisfaction is 0.2≤ly≤ 0.3,0.2≤1000lz≤1.0。
The present invention symmetrically cuts a part of material on the basis of plain bushing, in inner surface of bearing bush axial edge both sides, Two conical surfaces are formed, conical surface apex carries out chamfered.The marginal gap for increasing bearing alleviates bearing shell edge abrasion, The service life for extending bearing improves the reliabilities of operation such as diesel engine and durability.
The present invention applies one layer of antifriction alloy in inner surface of bearing bush, and can more effectively mitigate bearing shell must wear, and extends and uses the longevity Life.
Description of the drawings
Fig. 1 a are the schematic diagram of plain bushing or axle sleeve.
Fig. 1 b are the A-A sectional views of Fig. 1 a.
Fig. 1 c are the schematic diagram of plain bushing or axle sleeve wall.
Fig. 2 a are the schematic diagram of Double-conical-surface bearing shell or axle sleeve.
Fig. 2 b are the A-A sectional views of Fig. 2 a.
Fig. 2 c are the schematic diagram of Double-conical-surface bearing shell or axle sleeve wall.
Fig. 3 a are that the minimum oil film thickness of plain bushing and Double-conical-surface bearing shell compares.
Fig. 3 b are the maximum asperity contact pressure comparison of plain bushing and Double-conical-surface bearing shell.
Fig. 3 c are that the frictional force of plain bushing and Double-conical-surface bearing shell compares.
Specific implementation mode
It illustrates below and the present invention is described in more detail.
Symmetrically cut a part of material in inner surface of bearing bush axial edge both sides, form two conical surfaces, conical surface apex into Row chamfered obtains Double-conical-surface bearing shell.Above-mentioned Double-conical-surface inner surface of bearing bush is coated with one layer of antifriction alloy.
Fig. 1 a- Fig. 1 c are the schematic diagram of plain bushing or axle sleeve, and wherein B is plain bushing width, and d is that plain bushing is thick Degree.Fig. 2 a- Fig. 2 c are the schematic diagram of Double-conical-surface bearing shell or axle sleeve, and thickness is also d, symmetrical in inner surface of bearing bush axial edge both sides A part of material is cut, two conical surfaces are formed.If LyFor conical surface axial width, LzFor conical surface radial height, l is enabledy=Ly/ d, lz= Lz/ d, then lyWith lzThe condition that must meet is 0.2≤ly≤ 0.3,0.2≤1000lz≤1.0。
After cone face process, chamfered is carried out to its vertex.
Using certain Crankshaft of Marine Diesel Engine base bearing as research object, it is based on Elastic fluid lubrication theory, is included in surface topography factor, Have studied affecting laws of the Double-conical-surface bearing shell to bearing lubrication performance.
For crankshaft of diesel engine base bearing, the Reynolds equations for describing its ehl status are
Wherein, μ is lubricating oil viscosity；P is oil film pressure；U1、U2For upper and lower two superficial velocity；σ is that the synthesis on two surfaces is thick Rugosity；φx、φyRespectively x to, y to pressure flow factor；φsFor shear flow factor；hTIt, can for random oil film thickness It is considered the actual distance of two lubricated surfaces；ω is axle journal rotating speed.
Asperity contact pressure P between bearing shell and axle journalc(h) it can be expressed as
Pc(h)=KEF2.5(h/σ)
In formula, K is coefficient of elasticity；E is synthetical elastic modulus；And F2.5(h/ σ) indicates the distribution in the case of different Film Thickness Ratios Function.
The calculation formula of bearing friction power f is
In formula, U=ω R；φfs、φfp、φfFor the shear stress factor；μcFriction factor；AcPeak elemental area.
The result shows that Double-conical-surface bearing shell makes bearing minimum oil film thickness significantly increase, maximum asperity contact pressure drop Low is 0, frictional force maximum value significantly reduces.

Claims (3)

1. a kind of Double-conical-surface bearing shell, it is characterized in that：A part of material is symmetrically cut in inner surface of bearing bush axial edge both sides to be formed Two conical surfaces, conical surface apex have chamfering.
2. Double-conical-surface bearing shell according to claim 1, it is characterized in that：The inner surface of the bearing shell is coated with one layer of resistance to break-in Gold.
3. Double-conical-surface bearing shell according to claim 1 or 2, it is characterized in that：LyAxial width, L for the conical surfacezFor institute State radial height, the l of the conical surfacey=Ly/d、lz=Lz/ d, d is half bearing thickness, then lyWith lzThe condition of satisfaction is 0.2≤ly≤ 0.3,0.2≤1000lz≤1.0。
CN201810510935.2A 2018-05-25 2018-05-25 A kind of Double-conical-surface bearing shell Pending CN108775338A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810510935.2A CN108775338A (en) 2018-05-25 2018-05-25 A kind of Double-conical-surface bearing shell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810510935.2A CN108775338A (en) 2018-05-25 2018-05-25 A kind of Double-conical-surface bearing shell

Publications (1)

Publication Number Publication Date
CN108775338A true CN108775338A (en) 2018-11-09

Family

ID=64027797

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810510935.2A Pending CN108775338A (en) 2018-05-25 2018-05-25 A kind of Double-conical-surface bearing shell

Country Status (1)

Country Link
CN (1) CN108775338A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11230160A (en) * 1998-02-09 1999-08-27 Asmo Co Ltd Bearing
CN101504035A (en) * 2009-02-27 2009-08-12 华南理工大学 Heavy-duty sliding bearing and its abrasion-resistant correction method
CN201401444Y (en) * 2009-02-27 2010-02-10 华南理工大学 Modified heavy-duty sliding bearing
CN204692311U (en) * 2015-05-26 2015-10-07 重庆长安汽车股份有限公司 A kind of connection rod of automobile engine bearing shell

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11230160A (en) * 1998-02-09 1999-08-27 Asmo Co Ltd Bearing
CN101504035A (en) * 2009-02-27 2009-08-12 华南理工大学 Heavy-duty sliding bearing and its abrasion-resistant correction method
CN201401444Y (en) * 2009-02-27 2010-02-10 华南理工大学 Modified heavy-duty sliding bearing
CN204692311U (en) * 2015-05-26 2015-10-07 重庆长安汽车股份有限公司 A kind of connection rod of automobile engine bearing shell

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Application publication date: 20181109

RJ01 Rejection of invention patent application after publication