CN103837409B - Testing pulse fatigue machine fatigue experimental device and testing pulse fatigue machine - Google Patents
Testing pulse fatigue machine fatigue experimental device and testing pulse fatigue machine Download PDFInfo
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- CN103837409B CN103837409B CN201410094984.4A CN201410094984A CN103837409B CN 103837409 B CN103837409 B CN 103837409B CN 201410094984 A CN201410094984 A CN 201410094984A CN 103837409 B CN103837409 B CN 103837409B
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Abstract
The present invention provides a kind of testing pulse fatigue machine fatigue experimental device and testing pulse fatigue machine, comprise anchor and draw frame, anchor is connected with at least two actuator, anchor is also provided with one or more upper fixture, draw frame is provided with the lower clamp corresponding with upper fixture, upper fixture and lower clamp are all between at least two actuator, and on each, fixture and corresponding lower clamp are respectively used to fix the two ends of a workpiece to be tested; The pressure head of at least two actuator is supported on draw frame respectively, so that actuator can promote draw frame to move to the direction away from anchor under the effect of Controlling System, stretches to treat test piece. Testing pulse fatigue machine fatigue experimental device provided by the invention and testing pulse fatigue machine, it is possible to carry out the tensile fatigue test of little sample, be applied on testing pulse fatigue machine, it is possible to expand testing pulse fatigue and test scope.
Description
Technical field
The present invention relates to the fatigue test technology of component of machine, particularly relate to a kind of testing pulse fatigue machine fatigue experimental device and testing pulse fatigue machine.
Background technology
In modern industry, burn into fracture and abrasion are mechanical component and the major cause of engineering component damage inactivation, and wherein corrosion and abrasion process are slow, avoid destroying by regularly changing part or regularly carry out repairing, and rupture and usually occur suddenly, and unpredictable. The reason causing component to rupture is a lot, such as overload, low temperature brittleness, hydrogen embrittlement, stress corrosion and fatigue, and engineering practical situation show that the overwhelming majority is all caused by fatigue.
Therefore, for avoiding component to damage because of repeated stress failure, when the new installation designed is carried out intensity check or the equipment in operational process is carried out intensity check, all need to test the fatigue property of component under different repeated stress effect.
In prior art, the common equipment carrying out fatigue test has hydraulic pulsation protracted test machine, but testing pulse fatigue machine can only be used for various relatively large component and structure are carried out unidirectional pulsating compression or fatigue-bending test, and the tensile fatigue test of little sample can not be realized, test scope is very limited.
Summary of the invention
The present invention provides a kind of testing pulse fatigue machine fatigue experimental device and testing pulse fatigue machine, it is possible to carry out the tensile fatigue test of little sample, for expanding the test scope of testing pulse fatigue machine.
The present invention provides a kind of testing pulse fatigue machine fatigue experimental device, comprise anchor and draw frame, described anchor is connected with at least two actuator, described anchor is also provided with one or more upper fixture, described draw frame is provided with the lower clamp corresponding with described upper fixture, described upper fixture and described lower clamp are all between at least two described actuator, and 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 at least two described actuator is supported respectively on described draw frame, so that described actuator can promote described draw frame to move to the direction away from described anchor under the effect of Controlling System, to be stretched by described workpiece to be tested.
The present invention also provides a kind of testing pulse fatigue machine, includes testing pulse fatigue machine fatigue experimental device as above.
Testing pulse fatigue machine fatigue experimental device provided by the invention and testing pulse fatigue machine, by arranging anchor and draw frame, anchor is provided with actuator, draw frame moves to the direction away from anchor under actuator effect, the workpiece being connected between anchor and draw frame can be stretched, this device can carry out the tensile fatigue test of little sample, is applied on testing pulse fatigue machine, it is possible to expand testing pulse fatigue and test scope.
Accompanying drawing explanation
Fig. 1 is the structural representation of testing pulse fatigue machine fatigue experimental device of the present invention;
Fig. 2 is the structural representation of draw frame in testing pulse fatigue machine fatigue experimental device of the present invention;
Fig. 3 is the structural representation of the other direction of draw frame in testing pulse fatigue machine fatigue experimental device of the present invention;
Fig. 4 is the structural representation of the side frame of draw frame in testing pulse fatigue machine fatigue experimental device of the present invention;
Fig. 5 is the structural representation of the middle frame of draw frame in testing pulse fatigue machine fatigue experimental device of the present invention;
Fig. 6 is the structural representation that testing pulse fatigue machine fatigue experimental device of the present invention is provided with column.
Embodiment
The embodiment of the present invention provides a kind of testing pulse fatigue machine fatigue experimental device, as shown in Figure 1, this fatigue experimental device comprises anchor 1 and draw frame 2, anchor 1 is connected with at least two actuator 3, anchor 1 is also provided with one or more upper fixture 5, draw frame 2 is provided with the lower clamp 5 ' corresponding with upper fixture 5, upper fixture 5 and lower clamp 5 ' are all between at least two actuator 3, and on each, fixture 5 and corresponding lower clamp 5 ' are respectively used to fix the two ends of a workpiece to be tested.
The pressure head of at least two actuator 3 is supported respectively on draw frame 2, so that actuator 3 can promote draw frame 2 to move to the direction away from anchor 1 under the effect of Controlling System, stretches to treat test piece 4.
Fig. 1 only illustrates anchor 1 is provided with two actuator 3, and between two actuator 3, anchor 1 and draw frame 2 respectively arrange the situation of a fixture, for a workpiece is carried out Fatigue Test. As, in Fig. 1, workpiece 4 to be tested is between two actuator 3, and draw frame 2 is applied downward reactive force by two actuator 3 simultaneously, balanced about the drawing force suffered by test piece 4 can be made. It will be appreciated by those skilled in the art that, can arranging multiple actuator on anchor 1, can arrange one or more fixture between any two actuator, workpiece to be tested is placed between actuator by the present embodiment, can when treating test piece and stretch, the both sides stress equalization of workpiece to be tested.
Upper fixture 5 and lower clamp 5 ' in the present embodiment are plate tensile sample fixture, for clamping plate workpiece, though it is not so limited, upper fixture 5 and lower clamp 5 ' can be arranged according to the type of workpiece, as above fixture 5 and lower clamp 5 ' also can be shaft-like specimen holder, to clamp shaft-like workpiece etc.
In the present embodiment, as shown in Figure 1, owing to the length of actuator 3 is longer, and the length of workpiece to be tested 4 is shorter, and fixing for ease of workpiece 4 to be tested, is fixedly installed column structure 6 on anchor 1, and upper fixture 5 is fixed on column structure 6.
In the present embodiment, as shown in Figures 1 and 2, the side frame 22 that draw frame 2 comprises middle frame 21 and middle frame 21 two ends connect; Lower clamp 5 ' is fixed on middle frame 21, and two actuator 3 are supported respectively on two side frames 22.
Test for adapting to the workpiece of different lengths, make the distance between anchor 1 and draw frame 2 adjustable, it is provided with position adjustment structure 23 between the middle frame 21 of draw frame 2 and each side frame 22, to adjust the link position of middle frame 21 with side frame 22, distance between side frame 22 and anchor 1 is that the length according to actuator 3 determines when designing, therefore, by the link position of adjustment middle frame 21 with side frame 22, distance between adjustable anchor 1 and middle frame 21, so that can be suitable for the workpiece of different lengths between upper fixture 5 and lower clamp 5 '.
In the present embodiment, position adjustment structure 23 is multiple bolts hole set on each side frame 22, and middle frame 21 is by being connected its link position of adjustable with the bolt hole of different positions on side frame 22. Determine when designing because the distance between anchor 1 and side frame 22 is the length according to actuator 3, therefore by distance to adjust between middle frame 21 and anchor 1 of the link position of adjustment middle frame 21 and side frame 22.
In the present embodiment, as shown in Figures 2 and 4, each side frame 22 comprises transverse slat 221 connected vertically and vertical plate 222, multiple bolt hole is disposed on the length direction of vertical plate 222, the two ends of middle frame 21 are connected by the plurality of bolt hole is vertical with the vertical plate 222 of two side frames 22 respectively, and adjust its link position by the plurality of bolt hole, concrete, as shown in Fig. 3��Fig. 5, the two ends of middle frame 1 are respectively provided with two first and connect structure 211, vertical plate 222 is provided with two the 2nd connection structures 223 towards the side of middle frame 21, multiple bolts hole on side frame 22 are arranged on the length direction of the 2nd connection structure 223, middle frame 21 and side frame 22 connect structures 211 by two first and are connected the corresponding connection of structure 223 with two the 2nd and link together.
In the present embodiment, for making actuator 3 in up and down motion process, drawing force suffered by workpiece 4 to be tested transmits along the direction of workpiece 4 to be tested, it is respectively arranged with oscillating bearing (not shown) between anchor 1 with upper fixture 5 (between the column structure 6 being specifically connected on anchor 1 and upper fixture 5), between draw frame 2 and lower clamp 5 ', wherein, oscillating bearing known to those skilled in the art know can 360 �� rotate sliding surface bearing.
In the present embodiment, as shown in Figure 6, this fatigue experimental device also comprises two columns 7, the two ends of anchor 1 are separately fixed on two columns 7, on anchor 1 two actuator 3 is sling, wherein, owing to anchor 1 being hung with two actuator 3, anchor 1 requires enough intensity, anchor 1 is provided with the stiffening web 11 of multiple vertical setting, the pressure head of two actuator 3 on anchor 1 can move up and down under control of the control system, thus draw frame 2 moves to promote to support the two ends of draw frame 2.
The testing pulse fatigue machine fatigue experimental device that the embodiment of the present invention provides, by arranging anchor and draw frame, draw frame moves to the direction away from anchor under actuator effect, the workpiece being connected between anchor and draw frame can be stretched, this device can carry out the tensile fatigue test of little sample, be applied on testing pulse fatigue machine, it is possible to expand testing pulse fatigue and test scope.
Another embodiment of the present invention also provides a kind of testing pulse fatigue machine, includes the testing pulse fatigue machine testing pulse fatigue device that any embodiment of the present invention provides.
Last it is noted that above each embodiment is only in order to illustrate the technical scheme of the present invention, it is not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein some or all of technology feature is carried out equivalent replacement; And these amendments or replacement, do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution.
Claims (4)
1. a testing pulse fatigue machine fatigue experimental device, it is characterized in that, comprise anchor and draw frame, described anchor is connected with two actuator, described anchor is also provided with a upper fixture, being provided with a lower clamp corresponding with described upper fixture on described draw frame, described upper fixture and described lower clamp are all between two described actuator, and 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 two described actuator is supported respectively on described draw frame, so that described actuator can promote described draw frame to move to the direction away from described anchor under the effect of Controlling System, to be stretched by described workpiece to be tested;
The side frame that described draw frame comprises middle frame and described middle frame two ends connect;
Described lower clamp is fixed on described middle frame, and two described actuator are supported respectively on two described side frames;
Described middle frame and be provided with position adjustment structure between side frame described in each, to adjust described middle frame and the link position of described side frame;
Described position adjustment structure is multiple bolts hole set on described side frame, and described middle frame is by being connected to adjust and the link position of described side frame with the bolt hole of different positions on described side frame;
Side frame described in each comprises transverse slat connected vertically and vertical plate, and multiple described bolt hole is disposed on the length direction of described vertical plate;
The two ends of described middle frame are connected with the vertical plate of two described side frames is vertical respectively, and described actuator is supported on described transverse slat;
Being fixedly installed column structure on described anchor, described upper fixture is fixed on described column structure;
Described anchor is provided with multiple vertical stiffening web.
2. testing pulse fatigue machine fatigue experimental device according to claim 1, it is characterised in that, described column structure and described in each between upper fixture, described draw frame and be respectively arranged with oscillating bearing between lower clamp described in each.
3. testing pulse fatigue machine fatigue experimental device according to claim 1, it is characterised in that, also comprise two columns at described anchor two ends, the two ends of described anchor are separately fixed on described two columns.
4. a testing pulse fatigue machine, it is characterised in that, comprise the arbitrary described testing pulse fatigue machine fatigue experimental device of claim 1-3.
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| CN201410094984.4A CN103837409B (en) | 2014-03-14 | 2014-03-14 | Testing pulse fatigue machine fatigue experimental device and testing pulse fatigue machine |
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| CN103837409B true CN103837409B (en) | 2016-06-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105021450A (en) * | 2015-07-21 | 2015-11-04 | 西南交通大学 | Multi-sample parallel experiment clamp for providing continuous clamp force |
| CN106168560B (en) * | 2016-09-19 | 2023-04-07 | 西安科技大学 | Device for testing creep rate of dissimilar material under high-pressure kettle environment |
| CN108489802B (en) * | 2018-03-29 | 2020-12-29 | 武汉钢铁有限公司 | Device and method for detecting hydrogen embrittlement resistance of metal material under dynamic bending condition |
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| CN201811891U (en) * | 2010-09-30 | 2011-04-27 | 浙江大学 | Fatigue testing machine applicable to tension test piece |
| CN102338720A (en) * | 2011-10-11 | 2012-02-01 | 石家庄开发区中实检测设备有限公司 | Large-stroke pressure measurement testing machine |
| CN102680176A (en) * | 2012-05-24 | 2012-09-19 | 中国石油天然气集团公司 | Real stress corrosion testing machine for tubes |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5999328A (en) * | 1982-11-30 | 1984-06-08 | Shimadzu Corp | Material testing machine |
| JPH0954028A (en) * | 1995-08-18 | 1997-02-25 | Shimadzu Corp | Material testing machine |
| JP2008209310A (en) * | 2007-02-27 | 2008-09-11 | Shimadzu Corp | Material testing machine |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201811891U (en) * | 2010-09-30 | 2011-04-27 | 浙江大学 | Fatigue testing machine applicable to tension test piece |
| CN102338720A (en) * | 2011-10-11 | 2012-02-01 | 石家庄开发区中实检测设备有限公司 | Large-stroke pressure measurement testing machine |
| CN202582980U (en) * | 2012-03-26 | 2012-12-05 | 南京航空航天大学 | Tension-shear test loading device for flight structure |
| CN102680176A (en) * | 2012-05-24 | 2012-09-19 | 中国石油天然气集团公司 | Real stress corrosion testing machine for tubes |
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