CN104034614A - Pulse fatigue testing machine and fatigue testing device used for the same - Google Patents
Pulse fatigue testing machine and fatigue testing device used for the same Download PDFInfo
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- CN104034614A CN104034614A CN201410097048.9A CN201410097048A CN104034614A CN 104034614 A CN104034614 A CN 104034614A CN 201410097048 A CN201410097048 A CN 201410097048A CN 104034614 A CN104034614 A CN 104034614A
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- testing machine
- fatigue testing
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- fixed mount
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Abstract
The invention provides a pulse fatigue testing machine and a fatigue testing device used by the same. The fatigue testing device comprises a fixed frame and a drawing frame. An actuator is connected to the fixed frame. At least one upper clamp is disposed, at each side of the actuator, at the fixed frame. Lower clamps corresponding to the upper clamps are arranged on the drawing frame. Each of the upper clamps and the corresponding lower clamp are used for fixing two ends of a workpiece to be tested. A pressure head of the actuator is abutted against the drawing frame so that the actuator can push the drawing frame to move away from the fixed frame under action of a control system so as to draw the workpiece to be tested. The pulse fatigue testing machine and the fatigue testing device can be used for carrying out drawing fatigue tests on small samples. The fatigue testing device can expand the testing range of the pulse fatigue testing machine when applied to the pulse fatigue testing machine.
Description
Technical field
The present invention relates to the torture test technology of component of machine, relate in particular to fatigue experimental device and pulse fatigue testing machine for a kind of pulse fatigue testing machine.
Background technology
In modern industry, burn into fracture and wearing and tearing are main causes of mechanical component and engineering component damage inactivation, wherein corrode and wearing and tearing process slow, can or regularly place under repair to avoid by periodic replacement part to destroy, and fracture usually occurs suddenly, and unpredictable.Cause the reason of parts fracture a lot, such as overload, black brittleness, hydrogen embrittlement, stress corrosion and fatigue, and engineering actual conditions show that the overwhelming majority is all to be caused by fatigue.
Therefore,, for avoiding parts because fatigue break damages, the new equipment of design is carried out strength check or the equipment in operational process carried out, in the situations such as strength check, all need to test the fatigue behaviour of parts under different alterante stress effects.
In prior art, the common equipment that carries out torture test has hydraulic pulsation fatigue tester, but pulse fatigue testing machine can only be for carrying out unidirectional pulsation compression or repeated bend test to various relatively large parts and structure, and can not realize the tensile fatigue test of small sample, trial stretch is very limited.
Summary of the invention
The invention provides fatigue experimental device and pulse fatigue testing machine for a kind of pulse fatigue testing machine, can carry out the tensile fatigue test of small sample, for expanding the trial stretch of pulse fatigue testing machine.
The invention provides a kind of pulse fatigue testing machine fatigue experimental device, comprise fixed mount and draw frame, on described fixed mount, be connected with actuator, on described fixed mount, the both sides of described actuator are respectively provided with fixture at least one, on described draw frame, be provided with the lower clamp corresponding with described upper fixture, described in each, upper fixture and corresponding lower clamp are respectively used to fix the two ends of a workpiece to be tested;
The pressure head of described actuator is supported on described draw frame, moves, so that described workpiece to be tested is stretched so that described actuator can promote described draw frame under the effect of control system to the direction away from described fixed mount.
The present invention also provides a kind of pulse fatigue testing machine, comprises pulse fatigue testing machine fatigue experimental device as above.
Fatigue experimental device and pulse fatigue testing machine for the pulse fatigue testing machine that the embodiment of the present invention provides, by fixed mount and draw frame are set, actuator is set on fixed mount, draw frame moves to the direction away from fixed mount under actuator effect, can stretch to the workpiece being connected between fixed mount and draw frame and in actuator both sides, this device can carry out the tensile fatigue test of small sample, is applied on pulse fatigue testing machine, can expand the trial stretch of pulse fatigue testing machine.
Accompanying drawing explanation
Fig. 1 is the structural representation of fatigue experimental device for pulse fatigue testing machine of the present invention;
Fig. 2 is the structural representation of draw frame in fatigue experimental device for pulse fatigue testing machine of the present invention;
Fig. 3 is the structural representation of draw frame other direction in fatigue experimental device for pulse fatigue testing machine of the present invention;
Fig. 4 is the structural representation of the transition frame of draw frame in fatigue experimental device for pulse fatigue testing machine of the present invention;
Fig. 5 is the structural representation of the bogie side frame of draw frame in fatigue experimental device for pulse fatigue testing machine of the present invention;
Fig. 6 is that pulse fatigue testing machine of the present invention is provided with the structural representation of column with fatigue experimental device.
Embodiment
The embodiment of the present invention provides a kind of pulse fatigue testing machine fatigue experimental device, as shown in Figure 1, this fatigue experimental device comprises fixed mount 1 and draw frame 2, on fixed mount 1, be connected with actuator 3, on fixed mount 1, the both sides of actuator 3 are respectively provided with fixture 5 at least one, on draw frame 2, be provided with the lower clamp 5 ' corresponding with upper fixture 5, on each, fixture 5 and corresponding lower clamp 5 ' are respectively used to fix the two ends of a workpiece 4 to be tested.
The pressure head of actuator 3 is supported on draw frame 2, so that actuator 3 can promote draw frame 2 under the effect of control system, to the direction away from fixed mount 1, moves, and to treat test piece 4, stretches.
The situation that a workpiece 4 to be tested is respectively set in the both sides of actuator 3 has been shown in Fig. 1, as being provided with fixture 5 on two in Fig. 1 on fixed mount 1, accordingly, on draw frame, be provided with the lower clamp 5 ' corresponding with upper fixture 5, be symmetricly set on respectively the both sides of actuator 3, with the two ends of each workpiece 4 to be tested of the both sides in actuator 3.It will be understood by those skilled in the art that in the situation that increasing fixed mount 1 length, can a plurality of workpiece be respectively set in the both sides of actuator 3, so that a plurality of workpiece are carried out to tension test simultaneously.
Upper fixture 5 in the present embodiment and lower clamp 5 ' are plate tensile sample fixture, be used for clamping plate workpiece, but be not limited to this, upper fixture 5 and lower clamp 5 ' can arrange according to the type of workpiece, as above fixture 5 and lower clamp 5 ' also can be axle shape specimen holder, to clamp shaft-like workpiece etc.
In the present embodiment, as shown in Figure 1, because the length of actuator 3 is longer, and the length of two workpiece 4 to be tested is shorter, for ease of fixing of workpiece 4 to be tested, the quantity that is fixedly installed column structure 6(column structure 6 on fixed mount 1 according on the quantity of fixture 5 determine, in the present embodiment, be provided with two), on fixed mount 1, go up fixtures 5 and be separately fixed on two column structures 6 for set two.
In the present embodiment, as shown in Figures 1 and 2, draw frame 2 comprises the bogie side frame 22 that transition frame 21 and transition frame 21 two ends connect; The pressure head of actuator 3 is supported in transition frame 21, and two lower clamps 5 ' on draw frame 2 are fixed on two bogie side frames 22.
For adapting to the workpiece of different length, test, make in fixed mount 1 and draw frame 2 for the distance between the bogie side frame 22 of fixing lower clamp 5 ' adjustable, between the transition frame 21 of draw frame 2 and each bogie side frame 22, be provided with position adjustment structure 23, to adjust the link position of transition frame 21 and bogie side frame 22, distance between transition frame 21 and fixed mount 1 is to have determined in when design according to the length of actuator 3, therefore, by adjusting the position that interconnects between transition frame 21 and bogie side frame 22, distance between the bogie side frame 22 of capable of regulating fixed mount 1 and both sides, so that can be suitable for the workpiece of different length between upper fixture 5 and lower clamp 5 '.
In the present embodiment, position adjustment structure 23 is the set a plurality of bolts hole in transition frame 21 ends, and each bogie side frame 22 is connected to adjust the link position with transition frame 21 by the bolt hole with transition frame 21 end diverse locations.
Concrete, as shown in Fig. 3～Fig. 5, the two ends of transition frame 21 are respectively provided with two the first syndetons 211, a plurality of bolts hole that transition frame 21 ends arrange are disposed on the length direction of the first syndeton 211, on each bogie side frame 22, be provided with two the second syndetons 221, two the first syndetons 211 that transition frame 21 arranges respectively by two ends link together with the corresponding connection of two the second syndetons 221 of each bogie side frame 22.
In the present embodiment, for making actuator 3 in the process of moving up and down, the suffered tensile force of workpiece 4 to be tested is along the direction transmission of workpiece 4 to be tested, between (column structure 6 specifically connecting with upper fixture 5 between) in each connection with each at fixed mount 1 between fixture 5, draw frame 2 and be connected each lower clamp 5 ', oscillating bearing (not shown) can be set respectively on fixed mount 1, wherein, oscillating bearing known to those skilled in the art know can 360 ° of rotations sliding bearing.
In the present embodiment, as shown in Figure 6, this fatigue experimental device also comprises two columns 7, the two ends of fixed mount 1 are separately fixed on two columns 7, actuator 3 on fixed mount 1 is sling, thereby the pressure head of actuator 3 can move up and down under the control of control system, the pressure head of actuator 3 is supported in the middle part of draw frame 2 and is moved to the direction away from fixed mount 1 to promote draw frame 2.
The pulse fatigue testing machine fatigue experimental device that the embodiment of the present invention provides, by fixed mount and draw frame are set, actuator is set on fixed mount, draw frame moves to the direction away from fixed mount under actuator effect, can stretch to the workpiece being connected between fixed mount and draw frame, this device can carry out the tensile fatigue test of small sample, is applied on pulse fatigue testing machine, can expand the trial stretch of pulse fatigue testing machine.
Another embodiment of the present invention also provides a kind of pulse fatigue testing machine, includes the pulse fatigue testing machine testing pulse fatigue device that the arbitrary embodiment of the present invention provides.
Finally it should be noted that: each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit above; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a pulse fatigue testing machine fatigue experimental device, it is characterized in that, comprise fixed mount and draw frame, on described fixed mount, be connected with actuator, on described fixed mount, the both sides of described actuator are respectively provided with fixture at least one, on described draw frame, be provided with the lower clamp corresponding with described upper fixture, described in each, upper fixture and corresponding lower clamp are respectively used to fix the two ends of a workpiece to be tested;
The pressure head of described actuator is supported on described draw frame, moves, so that described workpiece to be tested is stretched so that described actuator can promote described draw frame under the effect of control system to the direction away from described fixed mount.
2. pulse fatigue testing machine fatigue experimental device according to claim 1, is characterized in that, is provided with two described upper fixtures on described fixed mount, is symmetricly set on the both sides of described actuator.
3. pulse fatigue testing machine fatigue experimental device according to claim 2, is characterized in that, described draw frame comprises the bogie side frame that transition frame and described transition frame two ends connect;
The pressure head of described actuator is supported in described transition frame, and two described is separately fixed on two described bogie side frames as lower clamp.
4. according to the pulse fatigue testing machine fatigue experimental device described in right 3, it is characterized in that, between described transition frame and two described bogie side frames, be respectively provided with position adjustment structure, to adjust the link position of described transition frame and described bogie side frame.
5. pulse fatigue testing machine fatigue experimental device according to claim 4, it is characterized in that, described position adjustment structure is a plurality of bolts hole that described transition frame end arranges, and described in each, bogie side frame is connected to adjust the link position with described transition frame by the bolt hole with described transition frame end diverse location.
6. pulse fatigue testing machine fatigue experimental device according to claim 5, it is characterized in that, the two ends of described transition frame are respectively provided with two the first syndetons, described in each, on bogie side frame, be provided with two the second syndetons, the corresponding connection of two the first syndetons of two of bogie side frame the second syndetons and described transition frame one side described in each;
Described a plurality of bolt hole is disposed on the length direction of the first syndeton described in each.
7. pulse fatigue testing machine fatigue experimental device according to claim 1, is characterized in that, the both sides in described actuator on described fixed mount are respectively arranged with column structure, and described upper fixture is fixed on described column structure.
8. according to the arbitrary described pulse fatigue testing machine fatigue experimental device of claim 1-7, it is characterized in that, go up between fixture described in described fixed mount and each, described draw frame and be respectively arranged with oscillating bearing between lower clamp described in each.
9. according to the arbitrary described pulse fatigue testing machine fatigue experimental device of claim 1-7, it is characterized in that, also comprise two columns that described fixed mount two ends arrange, the two ends of described fixed mount are connected on two described columns.
10. a pulse fatigue testing machine, is characterized in that, comprises the arbitrary described pulse fatigue testing machine fatigue experimental device of claim 1-9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410097048.9A CN104034614B (en) | 2014-03-14 | 2014-03-14 | Pulse fatigue testing machine fatigue experimental device and pulse fatigue testing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410097048.9A CN104034614B (en) | 2014-03-14 | 2014-03-14 | Pulse fatigue testing machine fatigue experimental device and pulse fatigue testing machine |
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| CN104034614A true CN104034614A (en) | 2014-09-10 |
| CN104034614B CN104034614B (en) | 2017-07-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769564A (en) * | 2016-12-23 | 2017-05-31 | 大连理工大学 | A kind of drag-line fatigue tester |
| CN109556954A (en) * | 2019-01-21 | 2019-04-02 | 南昌航空大学 | Test the fatigue tester of components fracture characteristic under the effect of different alternate stresses |
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| JP2000088726A (en) * | 1998-09-16 | 2000-03-31 | Sekisui Chem Co Ltd | Fatigue testing machine |
| JP2001324429A (en) * | 2000-05-18 | 2001-11-22 | Nishi Nippon Chiken Kk | Simplified compaction testing machine and compaction testing method by tamping using the same |
| CN2466628Y (en) * | 2001-02-23 | 2001-12-19 | 姚致国 | Material tester |
| CN101144764A (en) * | 2007-09-11 | 2008-03-19 | 中北大学 | Dynamic and static mechanics integrated test platform |
| CN101183061A (en) * | 2006-11-14 | 2008-05-21 | 东芝电梯株式会社 | Wire rope end connector fatigue test apparatus |
| CN202582980U (en) * | 2012-03-26 | 2012-12-05 | 南京航空航天大学 | Tension-shear test loading device for flight structure |
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2014
- 2014-03-14 CN CN201410097048.9A patent/CN104034614B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000088726A (en) * | 1998-09-16 | 2000-03-31 | Sekisui Chem Co Ltd | Fatigue testing machine |
| JP2001324429A (en) * | 2000-05-18 | 2001-11-22 | Nishi Nippon Chiken Kk | Simplified compaction testing machine and compaction testing method by tamping using the same |
| CN2466628Y (en) * | 2001-02-23 | 2001-12-19 | 姚致国 | Material tester |
| CN101183061A (en) * | 2006-11-14 | 2008-05-21 | 东芝电梯株式会社 | Wire rope end connector fatigue test apparatus |
| CN101144764A (en) * | 2007-09-11 | 2008-03-19 | 中北大学 | Dynamic and static mechanics integrated test platform |
| CN202582980U (en) * | 2012-03-26 | 2012-12-05 | 南京航空航天大学 | Tension-shear test loading device for flight structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769564A (en) * | 2016-12-23 | 2017-05-31 | 大连理工大学 | A kind of drag-line fatigue tester |
| CN109556954A (en) * | 2019-01-21 | 2019-04-02 | 南昌航空大学 | Test the fatigue tester of components fracture characteristic under the effect of different alternate stresses |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104034614B (en) | 2017-07-14 |
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