CN107179193A - Adjustable adaptive Crankshaft Bend Fatigue Test device - Google Patents
Adjustable adaptive Crankshaft Bend Fatigue Test device Download PDFInfo
- Publication number
- CN107179193A CN107179193A CN201710408452.7A CN201710408452A CN107179193A CN 107179193 A CN107179193 A CN 107179193A CN 201710408452 A CN201710408452 A CN 201710408452A CN 107179193 A CN107179193 A CN 107179193A
- Authority
- CN
- China
- Prior art keywords
- trunnion
- rod journal
- support
- fatigue test
- test device
- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/027—Test-benches with force-applying means, e.g. loading of drive shafts along several directions
Abstract
The invention provides the adjustable adaptive Crankshaft Bend Fatigue Test device of one kind, including touching flange, elastic bending plate, trunnion opening pressure head, rod journal is supported and trunnion support, the trunnion support and rod journal support are vertically mounted at the T-slot of test platform, and it is respectively equipped with trunnion supported hole and rod journal supported hole, the first trunnion and rod journal for testing bent axle unit adjust tile and rod journal adjustment tile in trunnion supported hole and rod journal supported hole by the first trunnion respectively, the trunnion opening pressure head adjusts tile by the second trunnion and is arranged at the second trunnion, the shake-up flange is located above trunnion opening pressure head, the elastic bending plate is connected between shake-up flange and trunnion opening pressure head.The present invention meets different bearing crankshaft repeated bend test requirements, is adapted to general high frequency testing machine need of work, experiment bent axle unit can adaptively flexural deformation.
Description
Technical field
The invention belongs to crankshaft fatigue technical field of measurement and test, more particularly, to the adjustable adaptive crankshaft bending fatigue of one kind
Experimental rig.
Background technology
The complexing action power such as curved, torsion, vibration are born in the major part that crankshaft component is exported as engine power, work
Periodicity effect, its structural strength and fatigue reliability are most important.Particularly at main bearing journal and rod journal fillet
Stress level is higher, mainly due to bent axle by caused by the lower generation flexural deformation of explosion pressure effect in cylinder.Alternate load is made
With often cracking failure at lower fillet.
Product development stage can be entered to examine the structural strength and fatigue reliability of bent axle on the basis of computer sim- ulation
Row part fatigue test.Crankshaft fatigue experiment is generally divided into two kinds, and one kind is that complete machine carries fatigue test, and a kind of mechanical part is tired
Labor is tested.The former process of the test is cumbersome, costly, risk is big, efficiency is low.But, bent axle working environment is true, and load, which is integrated, to be made
With obvious, confidence level height etc..The latter simulates the alternation effect that bent axle bears explosion pressure and inertia force using testing machine, with one
It is objectives of examination to determine loading coefficient with circulation radix, and the fatigue strength of the bent axle is judged according to result of the test.
Repeated bend test loading method generally has two kinds of dual-gripper repeated bend test and asymmetric curvature fatigue test.
General crankshaft component fatigue test frequency is low, and load effect is single, it is necessary to which dedicated hydraulic testing machine, functions of the equipments require high.
The content of the invention
In view of this, the present invention is directed to propose a kind of adjustable adaptive Crankshaft Bend Fatigue Test device, to meet not
Coaxial neck Crankshaft Bend Fatigue Test requirement, is adapted to general high frequency testing machine need of work, experiment bent axle unit can be with adaptive
Answer flexural deformation.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
Adjustable adaptive Crankshaft Bend Fatigue Test device, including touch flange, elastic bending plate, trunnion opening pressure
Head, rod journal support, trunnion support, the trunnion support and rod journal support are vertically mounted on test platform upper table
At the T-slot in face, the trunnion support is provided with a trunnion supported hole, and the rod journal support is provided with a company
Bar axle journal supported hole, the first trunnion and rod journal for testing bent axle unit adjusts tile and company by the first trunnion respectively
Bar axle journal adjustment tile is arranged in trunnion supported hole and rod journal supported hole, and the trunnion opening pressure head passes through second
Trunnion adjustment tile is arranged at the second trunnion, and the shake-up flange is located above trunnion opening pressure head, the elasticity
The upper end of twisted plate is connected with touching flange, and lower end is connected with trunnion opening pressure head.
Further, the trunnion support and rod journal support pass through high strength exploitation in support base and bearing
Cover.
Further, the first trunnion adjustment tile and rod journal adjustment tile support bottom outlet with trunnion respectively
With rod journal support bottom outlet interference fit.
Further, the endoporus of first trunnion adjustment tile and rod journal adjustment tile respectively with the first main shaft
Neck and rod journal interference fit.
Further, rigidly connect laterally across fastening bolt at the trunnion opening pressure head below second trunnion
Connect.
Further, the elastic bending plate is two-piece, and is fixed respectively by four pieces of contiguous blocks and be connected on main shaft
Between neck opening pressure head and shake-up flange.
Further, the contiguous block is bolted elastic bending plate.
Further, the upper surface for touching flange opens up positioning spigot, and lower eccentric is provided with riser structure.
Further, the positioning spigot center line for touching flange is overlapped with elastic bending plate.
Relative to prior art, adjustable adaptive Crankshaft Bend Fatigue Test device of the present invention has following excellent
Gesture：
(1) adjustable adaptive Crankshaft Bend Fatigue Test device of the present invention is tired in past bent axle asymmetric curvature
Increase many recanalization bearing shells and adaptive elastic bending plate on the basis of labor test method, different bearing crankshaft bendings can be met
Fatigue test requirement, is adapted to general high frequency testing machine need of work, experiment bent axle unit can adaptively flexural deformation.
(2) adjustable adaptive Crankshaft Bend Fatigue Test apparatus structure of the present invention is simple, and high mechanical strength is held
Carry stable, easy to assembly, manufacturing cost is low, multiple functional.
(3) adjustable adaptive Crankshaft Bend Fatigue Test device of the present invention passes through axle journal Support Position and interference
The adjustment of tile internal diameter can realize the repeated bend test of the different bent axle units in the range of certain specification, its highly versatile,
Adjustment is flexible, secondary input is low.
(4) second trunnion of the adjustable adaptive Crankshaft Bend Fatigue Test device of the present invention to bent axle unit
Loaded using reaction of bearing, carrying moment of flexure simulation, load control it is true, credible, bent axle unit can free bend, investigate region should
Power level is high with engineer applied similarity.
(5) adjustable adaptive Crankshaft Bend Fatigue Test device of the present invention can utilize general high frequency testing machine
As loading equipemtn, testing program strong adaptability, test frequency can be greatly improved, and the test period is short, and job costs are low, can be achieved
Unattended target.
Brief description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the adjustable adaptive Crankshaft Bend Fatigue Test apparatus structure schematic diagram described in the embodiment of the present invention.
Description of reference numerals：
1- touches flange；2- contiguous blocks；3- elastic bending plates；4- trunnion opening pressure heads；5- tests bent axle unit；6-
Two trunnions adjust tile；7- rod journals are supported；8- test platforms；9- trunnions are supported；10- rod journals adjust tile；
The trunnions of 11- first adjust tile；The trunnions of 12- first；13- rod journals；The trunnions of 14- second.
Embodiment
It should be noted that in the case where not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Mutually combination.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than indicate or dark
Specific orientation must be had, with specific azimuth configuration and operation by showing the device or element of meaning, therefore it is not intended that right
The limitation of the present invention.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating or implying phase
To importance or the implicit quantity for indicating indicated technical characteristic.Thus, the feature for defining " first ", " second " etc. can
To express or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in figure 1, adjustable adaptive Crankshaft Bend Fatigue Test device, including touch flange 1, elastic bending plate 3,
Trunnion opening pressure head 4, rod journal support 7, trunnion support 9, the trunnion support 9 and rod journal support 7 are vertical
At the T-slot of the upper surface of test platform 8, the trunnion support 9 is provided with a trunnion supported hole, the connecting rod
Axle journal support 7 is distinguished provided with a rod journal supported hole, the first trunnion 12 and rod journal 13 of experiment bent axle unit 5
Tile 11 is adjusted by the first trunnion and rod journal adjusts tile 10 and is arranged on trunnion supported hole and rod journal support
In hole, the trunnion opening pressure head 4 adjusts tile 6 by the second trunnion and is arranged at the second trunnion 14, and described second
Trunnion 14 forms cantilever beam bearing structure as the application end of test load, and the shake-up flange 1 is located at trunnion opening pressure
First 4 top, the upper end of the elastic bending plate 3 is connected with touching flange 1, and lower end is connected with trunnion opening pressure head 4.
The trunnion support 9 and rod journal support 7 are by high strength exploitation on support base and bearing cap.
The first trunnion adjustment tile 11 and rod journal adjustment tile 10 support bottom outlet and company with trunnion respectively
Bar axle journal support bottom outlet interference fit.
The endoporus of first trunnion adjustment tile 11 and rod journal adjustment tile 10 respectively with the first trunnion 12
It is interference fitted with rod journal 13.
It is rigidly connected at trunnion opening pressure head 4 below second trunnion 14 laterally across fastening bolt.
The elastic bending plate 3 is two-piece, and is fixed respectively by four pieces of contiguous blocks 2 and be connected on trunnion opening pressure
Between first 4 and shake-up flange 1.
The contiguous block 2 is bolted elastic bending plate 3.
The upper surface for touching flange 1 opens up positioning spigot, and lower eccentric is provided with riser structure.
The positioning spigot center line for touching flange 1 is overlapped with elastic bending plate 3, that is, ensure that in testing machine touch head
Heart line is consistent with elastic bending plate 3.
The test platform 8 is fixed with trunnion support 9 and rod journal support 7 by T-shaped piece and foundation bolt.
The connection of adjustable adaptive each sub-assembly of Crankshaft Bend Fatigue Test device is fastened mainly by high intensity spiral shell
Bolt is realized；Pretightning force size and installation specification are performed in strict accordance with national fastener code requirement.
The operation principle and process of the present embodiment are as follows：
The characteristics of adjustable adaptive Crankshaft Bend Fatigue Test device is main is adjustable adaptive with bending.Device spirit
Adjustable one side living shows the change with crankshaft journal in the range of certain specification, by the adjustment watt for changing different-thickness
Piece is adapted to；Tile design can will be even adjusted to be eccentric tile to meet the bent axle exemplar structure needs of stroke change,
So as to realize the versatility of its loading device.On the other hand because bore pitch difference causes crankshaft crank change in location,
Rod journal Support Position is different, then can by adjust rod journal support 7, trunnion support 9 on test platform 8 it is T-shaped
The relative position in groove direction and realize.Furthermore it is possible to meet load of the V-type machine side-by-side connecting rod on rod journal on diverse location
Function demand.
The flexural deformation of experiment bent axle unit 5 is adaptively then realized by two pieces of flexural deformations of elastic bending plate 3.Due to elasticity
The thickness of twisted plate 3 is smaller, and elastic properties of materials is good, local buckling of being taken advantage of a situation in the presence of actuation force, and experiment bent axle unit 5 will not be produced
Raw interference effect.In addition, two pieces of deformed regions of elastic bending plate 3 are shorter, flexural deformation amplitude is smaller, and in opposite direction, then may be used
With guarantee effect power transmission smoothness without unstability.
Test method of the adjustable adaptive Crankshaft Bend Fatigue Test device employed in experiment work is non-
Symmetric curvature fatigue test method, its test load applied is the corresponding work moment of flexure of main bearing journal counter support power,
Required to set loading coefficient (general 1.6 and more than) according to test objective；As investigated region at the label A in Fig. 1, area is investigated
Domain is the second trunnion fillet among the structure of experiment bent axle unit 5 and the fatigue strength at rod journal fillet；Trunnion is supported
Deviation in power and testing machine toucher active force existence position, so that the difference of amount of force is caused, therefore, according to support
Theoretical moment of flexure and actuation force relative position produced by counter-force are derived from maximum experiment tensile load and compressive load；Experiment is bent
Axle unit 5 reaches that flexural fatigue is tried by alternation effect of the testing machine high frequency dynamic exciting between tensile load and compressive load
Test the purpose of examination.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (9)
1. adjustable adaptive Crankshaft Bend Fatigue Test device, it is characterised in that：Including touching flange (1), elastic bending plate
(3), trunnion opening pressure head (4), rod journal support (7) and trunnion support (9), the trunnion support (9) and connecting rod
Axle journal support (7) is vertically mounted at the T-slot of test platform (8) upper surface, and the trunnion support (9) is provided with a master
Axle journal supported hole, the rod journal support (7) is provided with a rod journal supported hole, the first of experiment bent axle unit (5)
Trunnion (12) and rod journal (13) adjust tile (11) by the first trunnion respectively and rod journal adjusts tile (10)
In trunnion supported hole and rod journal supported hole, the trunnion opening pressure head (4) is adjusted by the second trunnion
Tile (6) is arranged on the second trunnion (14) place, and the shake-up flange (1) is located above trunnion opening pressure head (4), the bullet
Property twisted plate (3) upper end with touch flange (1) be connected, lower end is connected with trunnion opening pressure head (4).
2. adjustable adaptive Crankshaft Bend Fatigue Test device according to claim 1, it is characterised in that：The main shaft
Cervical branch supports (9) and rod journal supports (7) by high strength exploitation on support base and bearing cap.
3. adjustable adaptive Crankshaft Bend Fatigue Test device according to claim 1, it is characterised in that：Described first
Trunnion adjustment tile (11) and rod journal adjustment tile (10) support bottom outlet and rod journal support bottom with trunnion respectively
Hole is interference fitted.
4. the adjustable adaptive Crankshaft Bend Fatigue Test device according to claim 1 or 3, it is characterised in that：It is described
First trunnion adjustment tile (11) and rod journal adjust tile (10) endoporus respectively with the first trunnion (12) and connecting rod
Axle journal (13) is interference fitted.
5. adjustable adaptive Crankshaft Bend Fatigue Test device according to claim 1, it is characterised in that：Described
Trunnion opening pressure head (4) place below two trunnions (14) is rigidly connected laterally across fastening bolt.
6. adjustable adaptive Crankshaft Bend Fatigue Test device according to claim 1, it is characterised in that：The elasticity
Twisted plate (3) is two-piece, and is fixed respectively by four pieces of contiguous blocks (2) and be connected on trunnion opening pressure head (4) and shake-up
Between flange (1).
7. adjustable adaptive Crankshaft Bend Fatigue Test device according to claim 6, it is characterised in that：The connection
Block (2) is bolted elastic bending plate (3).
8. adjustable adaptive Crankshaft Bend Fatigue Test device according to claim 1, it is characterised in that：It is described to touch
The upper surface of flange (1) opens up positioning spigot, and lower eccentric is provided with riser structure.
9. adjustable adaptive Crankshaft Bend Fatigue Test device according to claim 8, it is characterised in that：It is described to touch
The positioning spigot center line of flange (1) is overlapped with elastic bending plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710408452.7A CN107179193A (en) | 2017-06-02 | 2017-06-02 | Adjustable adaptive Crankshaft Bend Fatigue Test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710408452.7A CN107179193A (en) | 2017-06-02 | 2017-06-02 | Adjustable adaptive Crankshaft Bend Fatigue Test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107179193A true CN107179193A (en) | 2017-09-19 |
Family
ID=59835651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710408452.7A Pending CN107179193A (en) | 2017-06-02 | 2017-06-02 | Adjustable adaptive Crankshaft Bend Fatigue Test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107179193A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112259264A (en) * | 2020-10-20 | 2021-01-22 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Containment and equipment gate connecting device suitable for ocean nuclear power platform |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1603209A1 (en) * | 1988-08-25 | 1990-10-30 | Научно-исследовательский конструкторско-технологический институт тракторных и комбайновых двигателей | Bed for testing i.c.engine crankshaft for fatigue strength |
| KR20090050855A (en) * | 2007-11-16 | 2009-05-20 | 현대자동차주식회사 | Engine crankshaft fatigue limit stress determination method |
| CN201575899U (en) * | 2009-12-24 | 2010-09-08 | 洛阳西苑车辆与动力检验所有限公司 | Resonance type crankshaft bending fatigue tester based on strain control principle |
| CN103969042A (en) * | 2014-05-29 | 2014-08-06 | 长城汽车股份有限公司 | Crankshaft testing device |
| CN104101534A (en) * | 2014-07-16 | 2014-10-15 | 上汽通用五菱汽车股份有限公司 | Engine crankshaft fatigue test fixture |
| CN104515674A (en) * | 2014-11-26 | 2015-04-15 | 中国北方发动机研究所(天津) | Hydraulic loading tester for testing engine crankshaft fatigue |
-
2017
- 2017-06-02 CN CN201710408452.7A patent/CN107179193A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1603209A1 (en) * | 1988-08-25 | 1990-10-30 | Научно-исследовательский конструкторско-технологический институт тракторных и комбайновых двигателей | Bed for testing i.c.engine crankshaft for fatigue strength |
| KR20090050855A (en) * | 2007-11-16 | 2009-05-20 | 현대자동차주식회사 | Engine crankshaft fatigue limit stress determination method |
| CN201575899U (en) * | 2009-12-24 | 2010-09-08 | 洛阳西苑车辆与动力检验所有限公司 | Resonance type crankshaft bending fatigue tester based on strain control principle |
| CN103969042A (en) * | 2014-05-29 | 2014-08-06 | 长城汽车股份有限公司 | Crankshaft testing device |
| CN104101534A (en) * | 2014-07-16 | 2014-10-15 | 上汽通用五菱汽车股份有限公司 | Engine crankshaft fatigue test fixture |
| CN104515674A (en) * | 2014-11-26 | 2015-04-15 | 中国北方发动机研究所(天津) | Hydraulic loading tester for testing engine crankshaft fatigue |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112259264A (en) * | 2020-10-20 | 2021-01-22 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Containment and equipment gate connecting device suitable for ocean nuclear power platform |
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170919 |
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| RJ01 | Rejection of invention patent application after publication |