CN106991200A - A kind of sliding bearing end cap installs gap width design method - Google Patents
A kind of sliding bearing end cap installs gap width design method Download PDFInfo
- Publication number
- CN106991200A CN106991200A CN201610036639.4A CN201610036639A CN106991200A CN 106991200 A CN106991200 A CN 106991200A CN 201610036639 A CN201610036639 A CN 201610036639A CN 106991200 A CN106991200 A CN 106991200A
- Authority
- CN
- China
- Prior art keywords
- bearing
- bolt
- load
- cover
- ball
- 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
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
-
- 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
- F16C33/72—Sealings
- F16C33/74—Sealings of sliding-contact bearings
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Optimization (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Mathematical Analysis (AREA)
- Computational Mathematics (AREA)
- Mechanical Engineering (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention belongs to mechanical design field, when being related to the installation of sliding bearing axle sleeve, the design of initialized gap values when the design of initialized gap values between bearing (ball) cover and body, more particularly to marine diesel engine sliding bearing are installed.Including：(1) FEM model and the solution of bearing (ball) cover mounting assembly are set up；(2) deformation values and the relation curve and slope calculations of bolt load are extracted；(3) determine that bolt pretightening load range under operating mode is installed；(4) bolt pretightening load range under operating condition is determined；(5) integrated according to step 3 and step 4 and determine bolt of cover pretightning force；(6) determine that gap width is installed between end cap and casing.The primary clearance of the installation between sliding bearing end cap and body can be reasonably designed using the method, the axle sleeve deflection of limit slippage bearing ensures that axle sleeve will not slide in the course of the work to meet the requirement of bearing fit tolerance.Dismounting is set to become convenient by the way of bearing (ball) cover fixed hub in addition.
Description
Technical field
The invention belongs to mechanical design field, when being related to the installation of sliding bearing axle sleeve, between bearing (ball) cover and body
The initialized gap values when design of initialized gap values, more particularly to marine diesel engine sliding bearing are installed
Design.
Background technology
In engine design, solid box formula structure being used sliding bearing, axle sleeve is arranged in bearing hole more,
Realize the work of sliding bearing.For the selection of shaft hole matching tolerance, in tradition it is many rule of thumb and enquiry machine
Tool design manual determines, the method without theoretical calculation, then by the way of cold set, complete axle sleeve with
Body bearing hole is full of assembling, to ensure the fixation of axle sleeve.As a result of the elastic conjunction side of cold set
Method, the axle sleeve of sliding bearing is bothered but designed for the installation gap of bearing (ball) cover very much when dismounting maintenance
Technology have no report.
The content of the invention
When fixed hub being installed it is an object of the invention to provide a kind of sliding bearing end cap between bearing (ball) cover and body
The computational methods of primary clearance, concrete technical scheme comprises the following steps：
Step 1：Set up FEM model and the solution of bearing (ball) cover mounting assembly
According to CAD 3D model, the FEM model that bearing (ball) cover is installed with casing, wherein end cap spiral shell are set up
Bolt, axle sleeve and alloy for bushing layer use single order hexahedral element, and cell type is C3D8I, bearing (ball) cover and
Box portion uses second order tetrahedron element, and cell type is C3D10M；Model bottom surface is used and fixed about
Beam, just determines 2mm initialized gap values, the load of calculating is the pre- of bolt of cover between bearing (ball) cover and casing
Clamp force is acted on, and pretightning force is 173kN；
Step 2：Extract deformation values and the relation curve and slope calculations of bolt load
Bearing (ball) cover and box deformation result are extracted from result of calculation, bearing (ball) cover is obtained according to result of calculation
Rule between the gap width and bolt load under pretension condition of casing contact surface, from result of calculation obtain lose circularity,
The gap width of the degree of eccentricity and contact surface is substantially linear with bolt load, deflection and bolt load
Relation equation is as follows：
The slope of a circularity and bolt load under pretension condition：
The slope of the b longitudinal direction degree of eccentricitys and bolt load under pretension condition：
The slope of c minimum clearance value decrements and bolt load under pretension condition：
D maximal clearances are worth the slope of decrement and bolt load under pretension condition：
Step 3：It is determined that installing bolt pretightening load range under operating mode
Minimum interference amount and bearing (ball) cover are installed according to sliding bearing location tolerance, gear location tolerance, axle sleeve
The requirement compressed with casing is obtained between mistake circularity, longitudinal degree of eccentricity, end cap and the casing contact surface maximum of axle sleeve
The requirement of the decrement of gap value and the decrement of minimum clearance value：
A circularity：F1(x)≤A1
The b longitudinal directions degree of eccentricity：F2(x)≤A2
C minimum clearance value decrements：F3(x)≥C1
D maximal clearances are worth decrement：F4(x)≥C2
When installing the requirement of minimum interference amount, i.e., e need to meet simultaneouslyWhen, contact surface two side areas does not occur
Contact：
In formula：A1The mistake circularity limit value determined for location tolerance；
A2The longitudinal degree of eccentricity limit value determined for location tolerance；
C1For initialized gap values；
C2The requirement of minimum interference amount is installed for axle sleeve and bearing hole
Obtaining installing the prefastening load of bolt under operating mode should meet：
Step 4：Determine bolt pretightening load range under operating condition
Longitudinal opening will not occur box bearing lid for axle sleeve in the course of the work, and bolt load under pretension condition is met：
n·x≥Fn
Tangential sliding will not occur box bearing lid for axle sleeve in the course of the work, and bolt load under pretension condition is met：
n·μ·x≥Fτ
In formula：N is gear-box end bonnet bolt number；
FnFor the longitudinal component of bearing load；
μ is bearing cap and nut contact surface coefficient of friction；
FτFor bearing load horizontal component
The prefastening load for obtaining installing bolt under operating mode is met：
Step 5：Integrated according to step 3 and step 4 and determine bolt of cover pretightning force
According to the requirement for installing operating mode and sliding bearing operating condition, gear box end cover tools for bolts ' pretension load is obtained
The scope of lotus is：
The relation curve of each deformation values and bolt pretightening is obtained according to FEM calculation, asks slope to obtain curve：
k1=0.00014mm/kN, k2=0.00025mm/kN, k3=0.003mm/kN, k4=0.00057mm/kN
Calculated according to bearing and obtain bearing horizontal direction load for Fτ=10.5kN, vertical direction load is Fn=0,
Wherein, vertical direction is bolted direction；
According to result of calculation and empirically and mechanical design handbook is referred to, the requirement for determining each deflection is
A1=0.013mm, A2=0.022mm, C1=0.132mm, C2=0.025mm, brings data above into formula meter
Calculation show that the prefastening load scope of bolt is：44kN<x<88kN
Install to coordinate with reference to the bearing and require, bolt load under pretension condition takes 80kN；
Step 6：Determine that gap width is installed between end cap and casing
According to the requirement of step 3 and step 4, the size of bolt load is determined；According to the bolt load of determination
Calculate install gap width scope be：
Bring into calculate data obtain initially install gap width scope be：0.132mm<C1<0.24mm
Install to coordinate with reference to the bearing and require, initial gap width of installing takes 0.2mm.
Beneficial effect：The peace between sliding bearing end cap and body can be reasonably designed using this computational methods
The primary clearance of dress, the axle sleeve deflection of limit slippage bearing is protected with meeting the requirement of bearing fit tolerance
Card axle sleeve will not slide in the course of the work.Make dismounting by the way of bearing (ball) cover fixed hub in addition
Become convenient.
Brief description of the drawings
Fig. 1 is the flow chart that the present invention installs gap value calculating method to bearing (ball) cover.
Fig. 2 is the CAD model that bearing (ball) cover of the present invention installs the gear box end cover installation that gap width is calculated.
Fig. 3 is that bearing (ball) cover of the present invention installs the FEM model that gap width is calculated.
Fig. 4 is that bearing (ball) cover installs the alloy for bushing layer Aberration nephogram that gap width is calculated (unit is mm).
Fig. 5 is the result of bearing (ball) cover and casing gap width (unit is mm).
Wherein, 1 is sliding bearing end cap, and 2 be end cover connecting bolt, and 3 be axle sleeve, and 4 be alloy for bushing layer,
5 be casing.
Embodiment
We come to the present invention to certain marine low speed diesel engine gear-box with reference to accompanying drawing and specific embodiment below
The computational methods that gap width is installed between bearing (ball) cover and casing are further elaborated, but can not be limited with this
Protection scope of the present invention processed.
The present invention is adopted to the calculating that gap width is installed between certain marine low speed diesel engine box bearing end cap and casing
Mechanical analysis is carried out to box bearing end cap and installation model with CAE technologies, according to the knot of FEM calculation
Fruit obtains each parts to deflection, mainly including between circularity, the degree of eccentricity and bearing (ball) cover and casing
Gap value.Each deformation value is defined according to the requirement of location tolerance, required initial clipping room is obtained
Gap value.Carried out according to following steps：
Step 1：Set up FEM model and the solution of bearing (ball) cover mounting assembly
CAD 3D model according to Fig. 2, the basic size of sliding bearing shaft hole matching is
Require to set up the FEM model that bearing (ball) cover is installed with casing, FEM model such as Fig. 3 of foundation according to analysis
Shown, wherein bolt of cover, axle sleeve and alloy for bushing layer use single order hexahedral element, and cell type is
C3D8I, bearing (ball) cover and box portion use second order tetrahedron element, and cell type is C3D10M.Model
Unit number is about 330,000, and nodes are about 460,000.Model bottom surface is used fixed constraint, axle by calculating process
2mm initialized gap values are just determined between socket end lid and casing, the load of calculating is the pretension masterpiece of bolt of cover
With being set to 173kN at the beginning of pretightning force.
Step 2：Extract deformation values and the relation curve and slope calculations of bolt load
Accompanying drawing 4 is the Aberration nephogram of alloy-layer, and the deformation data of its inner ring is extracted from result of calculation, according to
Fourier transformation obtains the rule between mistake circularity, the degree of eccentricity and the bolt load under pretension condition of axle sleeve deformation.From meter
Calculate and bearing (ball) cover and box deformation result are extracted in result, bearing (ball) cover and casing that accompanying drawing 5 obtains for calculating
The gap width result of calculation of contact surface, the gap width of bearing (ball) cover and casing contact surface is obtained according to result of calculation
Rule between bolt load under pretension condition (x).Obtain losing circularity, the degree of eccentricity and contact surface from result of calculation
Gap width and bolt load it is substantially linear.Deflection and the relation equation of bolt load are as follows：
The slope of a circularity and bolt load under pretension condition：
The slope of the b longitudinal direction degree of eccentricitys and bolt load under pretension condition：
The slope of c minimum clearance value decrements and bolt load under pretension condition：
D maximal clearances are worth the slope of decrement and bolt load under pretension condition：
Step 3：It is determined that installing bolt pretightening load range under operating mode
Minimum interference amount and bearing (ball) cover are installed according to sliding bearing location tolerance, gear location tolerance, axle sleeve
The requirement compressed with casing is obtained between mistake circularity, longitudinal degree of eccentricity, end cap and the casing contact surface maximum of axle sleeve
The requirement of the decrement of gap value and the decrement of minimum clearance value.
A circularity：F1(x)≤A1
The b longitudinal directions degree of eccentricity：F2(x)≤A2
C minimum clearance value decrements：F3(x)≥C1
D maximal clearances are worth decrement：F4(x)≥C2
When installing the requirement of minimum interference amount, i.e., e need to meet simultaneouslyWhen, contact surface two side areas does not occur
Contact：
In formula：A1The mistake circularity limit value determined for location tolerance；
A2The longitudinal degree of eccentricity limit value determined for location tolerance；
C1For initialized gap values；
C2The requirement of minimum interference amount is installed for axle sleeve and bearing hole.
The prefastening load of bolt under operating mode, which can be obtained installing, to be met：
Step 4：Determine bolt pretightening load range under operating condition
Box bearing lid should be able to ensure that longitudinal opening, tools for bolts ' pretension will not occur for axle sleeve in the course of the work
Load should be met：n·x≥Fn
Box bearing lid should be able to ensure that tangential sliding will not occur for axle sleeve in the course of the work, and tools for bolts ' pretension is carried
Lotus should meet：N μ x ＞ Fτ
In formula：N is gear-box end bonnet bolt number；
FnFor the longitudinal component of bearing load；
μ is bearing cap and nut contact surface coefficient of friction；
FτFor bearing load horizontal component.
The prefastening load of bolt under operating mode, which can be obtained installing, to be met：
Step 5：Integrated according to step 3 and step 4 and determine bolt of cover pretightning force
According to the requirement for installing operating mode and sliding bearing operating condition, gear box end cover tools for bolts ' pretension load can be obtained
The scope of lotus is：
The relation curve of each deformation values and bolt pretightening is obtained according to FEM calculation, asks slope to obtain curve：
k1=0.00014mm/kN, k2=0.00025mm/kN, k3=0.003mm/kN, k4=0.00057mm/kN
Calculated according to bearing and obtain bearing horizontal direction load for Fτ=10.5kN, vertical direction load is Fn=0,
Wherein, vertical direction is bolted direction.Bolt of cover number is 2, friction coefficient μ=0.15.
According to result of calculation and empirically and mechanical design handbook is referred to, the requirement for determining each deflection is
A1=0.013mm, A2=0.022mm, C1=0.132mm, C2=0.025mm.Bring data above into formula meter
Calculation show that the prefastening load scope of bolt is：44kN<x<88kN
Install to coordinate with reference to the bearing and require, bolt load under pretension condition takes 80kN.
Step 6：Determine that gap width is installed between end cap and casing
According to the requirement of step 3 and step 4, the size of bolt load is determined.According to the bolt load of determination
Calculate install gap width scope be：
Bring into calculate data obtain initially install gap width scope be：0.132mm<C1<0.24mm
Install to coordinate with reference to the bearing and require, initial gap width of installing takes 0.2mm.
Claims (1)
1. a kind of sliding bearing end cap installs gap width design method, it is characterised in that comprise the following steps：
Step 1：Set up FEM model and the solution of bearing (ball) cover mounting assembly；
According to CAD 3D model, the FEM model that bearing (ball) cover is installed with casing, wherein end cap spiral shell are set up
Bolt, axle sleeve and alloy for bushing layer use single order hexahedral element, and cell type is C3D8I, bearing (ball) cover and
Box portion uses second order tetrahedron element, and cell type is C3D10M；Model bottom surface is used and fixed about
Beam, just determines 2mm initialized gap values, the load of calculating is the pre- of bolt of cover between bearing (ball) cover and casing
Clamp force is acted on, and pretightning force is 173kN；
Step 2：Extract deformation values and the relation curve and slope calculations of bolt load；
Bearing (ball) cover and box deformation result are extracted from result of calculation, bearing (ball) cover is obtained according to result of calculation
Rule between the gap width and bolt load under pretension condition of casing contact surface, from result of calculation obtain lose circularity,
The gap width of the degree of eccentricity and contact surface is substantially linear with bolt load, deflection and bolt load
Relation equation is as follows：
The slope of a circularity and bolt load under pretension condition：
The slope of the b longitudinal direction degree of eccentricitys and bolt load under pretension condition：
The slope of c minimum clearance value decrements and bolt load under pretension condition：
D maximal clearances are worth the slope of decrement and bolt load under pretension condition：
Step 3：It is determined that installing bolt pretightening load range under operating mode；
Minimum interference amount and bearing (ball) cover are installed according to sliding bearing location tolerance, gear location tolerance, axle sleeve
The requirement compressed with casing is obtained between mistake circularity, longitudinal degree of eccentricity, end cap and the casing contact surface maximum of axle sleeve
The requirement of the decrement of gap value and the decrement of minimum clearance value：
A circularity：F1(x)≤A1
The b longitudinal directions degree of eccentricity：F2(x)≤A2
C minimum clearance value decrements：F3(x)≥C1
D maximal clearances are worth decrement：F4(x)≥C2
When installing the requirement of minimum interference amount, i.e., e need to meet simultaneouslyWhen, contact surface two side areas does not occur
Contact：
In formula：A1The mistake circularity limit value determined for location tolerance；
A2The longitudinal degree of eccentricity limit value determined for location tolerance；
C1For initialized gap values；
C2The requirement of minimum interference amount is installed for axle sleeve and bearing hole
The prefastening load for obtaining installing bolt under operating mode is met：
Step 4：Determine bolt pretightening load range under operating condition
Longitudinal opening will not occur box bearing lid for axle sleeve in the course of the work, and bolt load under pretension condition is met：
n·x≥Fn
Tangential sliding will not occur box bearing lid for axle sleeve in the course of the work, and bolt load under pretension condition is met：
n·μ·x≥FT
In formula：N is gear-box end bonnet bolt number；
FnFor the longitudinal component of bearing load；
μ is bearing cap and nut contact surface coefficient of friction；
FτFor bearing load horizontal component
The prefastening load for obtaining installing bolt under operating mode is met：
Step 5：Integrated according to step 3 and step 4 and determine bolt of cover pretightning force
According to the requirement for installing operating mode and sliding bearing operating condition, gear box end cover tools for bolts ' pretension load is obtained
The scope of lotus is：
The relation curve of each deformation values and bolt pretightening is obtained according to FEM calculation, asks slope to obtain curve：
k1=0.00014mm/kN, k2=0.00025mm/kN, k3=0.003mm/kN, k4=0.00057mm/kN
Calculated according to bearing and obtain bearing horizontal direction load for Fτ=10.5kN, vertical direction load is Fn=0,
Wherein, vertical direction is bolted direction；
According to result of calculation and empirically and mechanical design handbook is referred to, the requirement for determining each deflection is
A1=0.013mm, A2=0.022mm, C1=0.132mm, C2=0.025mm, brings data above into formula meter
Calculation show that the prefastening load scope of bolt is：44kN<x<88kN
Install to coordinate with reference to the bearing and require, bolt load under pretension condition takes 80kN；
Step 6：Determine that gap width is installed between end cap and casing
According to the requirement of step 3 and step 4, the size of bolt load is determined；According to the bolt load of determination
Calculate install gap width scope be：
Bring into calculate data obtain initially install gap width scope be：0.132mm<C1<0.24mm
Install to coordinate with reference to the bearing and require, initial gap width of installing takes 0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610036639.4A CN106991200A (en) | 2016-01-20 | 2016-01-20 | A kind of sliding bearing end cap installs gap width design method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610036639.4A CN106991200A (en) | 2016-01-20 | 2016-01-20 | A kind of sliding bearing end cap installs gap width design method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106991200A true CN106991200A (en) | 2017-07-28 |
Family
ID=59413891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610036639.4A Pending CN106991200A (en) | 2016-01-20 | 2016-01-20 | A kind of sliding bearing end cap installs gap width design method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106991200A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108984968A (en) * | 2018-08-22 | 2018-12-11 | 中国北方车辆研究所 | A kind of optimum design method and device of bearing fit tolerance |
| CN109711024A (en) * | 2018-12-18 | 2019-05-03 | 国网内蒙古东部电力有限公司经济技术研究院 | One kind being bolted a Force Optimal Analysis method |
| CN110159663A (en) * | 2019-06-24 | 2019-08-23 | 芜湖恒升重型机床股份有限公司 | A kind of bearing clearance pre-tension method and bearing arrangement |
| CN110705181A (en) * | 2019-10-13 | 2020-01-17 | 重庆交通大学 | Rolling bearing residual life prediction method based on convolution length-time memory cyclic neural network |
| CN115982894A (en) * | 2023-03-20 | 2023-04-18 | 中国航发四川燃气涡轮研究院 | Method for designing gap between threaded main mounting joint mounting system and thrust pin |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58109717A (en) * | 1981-12-23 | 1983-06-30 | Hitachi Ltd | Segment bearing adjusting device |
| JPH06272654A (en) * | 1993-03-23 | 1994-09-27 | Chubu Electric Power Co Inc | Multistage pump water-turbine |
| CN101249598A (en) * | 2008-01-07 | 2008-08-27 | 天津钢管集团股份有限公司 | Thermal insert technique prolonging service lifetime of rolling mill bearing |
| CN101761584A (en) * | 2010-02-08 | 2010-06-30 | 成都科华重型轴承有限公司 | High rigidity installation method of rolling bearing and novel structure of bearing |
| CN102699875A (en) * | 2012-06-13 | 2012-10-03 | 方盛车桥（柳州）有限公司 | Device for adjusting axial float gap of hub bearing |
-
2016
- 2016-01-20 CN CN201610036639.4A patent/CN106991200A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58109717A (en) * | 1981-12-23 | 1983-06-30 | Hitachi Ltd | Segment bearing adjusting device |
| JPH06272654A (en) * | 1993-03-23 | 1994-09-27 | Chubu Electric Power Co Inc | Multistage pump water-turbine |
| CN101249598A (en) * | 2008-01-07 | 2008-08-27 | 天津钢管集团股份有限公司 | Thermal insert technique prolonging service lifetime of rolling mill bearing |
| CN101761584A (en) * | 2010-02-08 | 2010-06-30 | 成都科华重型轴承有限公司 | High rigidity installation method of rolling bearing and novel structure of bearing |
| CN102699875A (en) * | 2012-06-13 | 2012-10-03 | 方盛车桥（柳州）有限公司 | Device for adjusting axial float gap of hub bearing |
Non-Patent Citations (1)
| Title |
|---|
| 徐志远: "机械负荷对柴油机缸套变形的影响研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108984968A (en) * | 2018-08-22 | 2018-12-11 | 中国北方车辆研究所 | A kind of optimum design method and device of bearing fit tolerance |
| CN109711024A (en) * | 2018-12-18 | 2019-05-03 | 国网内蒙古东部电力有限公司经济技术研究院 | One kind being bolted a Force Optimal Analysis method |
| CN109711024B (en) * | 2018-12-18 | 2024-04-05 | 国网内蒙古东部电力有限公司经济技术研究院 | Bolt connection point stress optimization analysis method |
| CN110159663A (en) * | 2019-06-24 | 2019-08-23 | 芜湖恒升重型机床股份有限公司 | A kind of bearing clearance pre-tension method and bearing arrangement |
| CN110159663B (en) * | 2019-06-24 | 2024-03-19 | 芜湖恒升重型机床股份有限公司 | Bearing play pre-tightening method and bearing structure |
| CN110705181A (en) * | 2019-10-13 | 2020-01-17 | 重庆交通大学 | Rolling bearing residual life prediction method based on convolution length-time memory cyclic neural network |
| CN110705181B (en) * | 2019-10-13 | 2022-06-24 | 重庆交通大学 | Rolling bearing residual life prediction method based on convolution length-time memory cyclic neural network |
| CN115982894A (en) * | 2023-03-20 | 2023-04-18 | 中国航发四川燃气涡轮研究院 | Method for designing gap between threaded main mounting joint mounting system and thrust pin |
| CN115982894B (en) * | 2023-03-20 | 2023-06-30 | 中国航发四川燃气涡轮研究院 | Threaded main installation joint installation system and thrust pin clearance design method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106991200A (en) | A kind of sliding bearing end cap installs gap width design method | |
| Nakhaeinejad et al. | Dynamic modeling of rolling element bearings with surface contact defects using bond graphs | |
| Strozzi et al. | A repertoire of failures in connecting rods for internal combustion engines, and indications on traditional and advanced design methods | |
| Chen | Vibration modelling and verifications for whole aero-engine | |
| CN102323063B (en) | Method for testing oil-film force of piston assembly based on crankshaft vibration signal and system | |
| Fang et al. | On the tribo-dynamic interactions between piston skirt-liner system and pin assembly in a gasoline engine | |
| Fathi Sola et al. | Fatigue life assessment of crankshaft with increased horsepower | |
| CN205731363U (en) | A kind of electromagnetism quartering hammer | |
| Ma et al. | Evaluating the quality of assembled camshafts under pulsating hydroforming | |
| Kirsch et al. | Optimized cast components in the drive train of wind turbines and inner ring creep in the main bearing seat | |
| CN107665286A (en) | One kind is on automobile engine bearings dynamic analysis method | |
| Offner et al. | Piston clearance optimization using thermo-elasto hydrodynamic simulation to reduce piston slap excitation and friction loss | |
| Jiang et al. | A study on dynamic response and diagnosis method of the wear on connecting rod bush | |
| CN202719182U (en) | Five-piece-type forged steel ball valve | |
| CN103235857A (en) | Hollow shaft type hydrostatic bearing multi-field coupling simulated analysis method | |
| Muhammad et al. | Structural Analysis of a Knuckle Joint using different materials | |
| Li et al. | Gear faults diagnosis based on wavelet-AR model and PCA | |
| Liu et al. | Mechanism of hydrojoining and approach to increase torsion strength of assembled camshafts | |
| YAN et al. | Design optimization of blade parameters of dual torus hydraulic retarder | |
| Bergmann et al. | Modeling Wear of Journal Bearings | |
| Cinar et al. | Pressure determination approach in specific pressure regions and FEM-based stress analysis of the housing of an external gear pump | |
| Suthep et al. | Cold forging deformation analysis for stainless material using DEFORM | |
| Kourav et al. | Design and analysis of piston by using finite element analysis | |
| Sun et al. | Virtual product development for an automotive universal joint | |
| CN203126943U (en) | Rotary valve of hydraulic steering gear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20220208 |
|
| AD01 | Patent right deemed abandoned |