CN102507349A - Micro fatigue testing machine with variable displacement control - Google Patents
Micro fatigue testing machine with variable displacement control Download PDFInfo
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- CN102507349A CN102507349A CN2011103218315A CN201110321831A CN102507349A CN 102507349 A CN102507349 A CN 102507349A CN 2011103218315 A CN2011103218315 A CN 2011103218315A CN 201110321831 A CN201110321831 A CN 201110321831A CN 102507349 A CN102507349 A CN 102507349A
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- direct current
- connecting rod
- guide rod
- driving mechanism
- testing machine
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Abstract
The invention discloses a micro fatigue testing machine with variable displacement control, which comprises a base, wherein the base is provided with a guide rail bracket and a drive mechanism bracket; a left chuck, a right chuck, a counter and a sliding block are arranged on the guide rail bracket; the left chuck is arranged on the sliding block; a drive mechanism is arranged on the drive mechanism bracket; the drive mechanism comprises a direct current motor, a short connection rod, a shaft, a guide rod and long connection rod; the direct current motor is fixed on the drive mechanism bracket; an output shaft of the direct current motor is connected with the short connection rod; the middle part of the guide rod is rotationally connected to the drive mechanism bracket; a first end of the guide rod is connected with the short connection rod through the shaft; a second end of the guide rod is hinged with one end of the long connection rod, and the other end of the long connection rod is connected to the left chuck or the sliding block. The micro fatigue testing machine disclosed by the invention has the following beneficial effects: reciprocating stretch can be realized under an alternate load action, the micro fatigue testing machine is simpler in structure and more convenient in processing without special parts, and meanwhile, continuous change of stretch displacement within 1-5 cm can be satisfied.
Description
Technical field
The present invention relates to the test unit of a displacement control, the miniature test that especially can carry out the torture test of rubber test specimen.
Background technology
Overall aircraft fuel tank in use fluid sealant can receive the effect of alternate load, produces problems such as fatigue failure.Therefore the fatigue behaviour of fluid sealant is most important to the performance impact of fuel tank, if fluid sealant under arms in the process material deterioration cause seepage, can not upgrade comprehensively, the modular repair difficulty is also bigger.Because its on-dismountable property, have material impact to machine life the sealing life of integral tank, and used sealant lifetime can be represented integral tank sealing life, and it is significant therefore sealant to be carried out life appraisal.Adopted the artificial accelerated aging test method to come projected life in the past; Because end point values is confirmed unreasonable; Lack direct and indirect proof again; The assessment result using value is not high, and existing in the market fatigue tester is in the majority with the maximization hydrostatic control, not the miniature fatigue test device of this type of suitable sealant material.
Summary of the invention
Can not effectively test the shortcoming of the fatigue behaviour of fluid sealant in order to overcome existing large-scale fatigue tester and test method; The present invention provides the miniature fatigue tester of a variable displacement control; This testing machine can be according to testing requirements; Change the stretching displacement of test specimen, the relevant fatigue behaviour of test fluid sealant.
The technical solution adopted for the present invention to solve the technical problems is: a kind of miniature fatigue tester of variable displacement control; Comprise pedestal; This pedestal is provided with rail brackets and driving mechanism support; Described rail brackets is provided with left chuck, right chuck, counter and slide block, and described left chuck is arranged on the slide block, and described driving mechanism support is provided with driving mechanism; This driving mechanism comprises that direct current generator, short connecting rod, axle, guide rod and long connecting rod, described direct current generator are fixed on the driving mechanism support; The output shaft of direct current generator is connected with described short connecting rod, and the middle part of described guide rod is rotatably connected on the driving mechanism support, and first end of guide rod is connected with short connecting rod through described axle; Second end of guide rod and an end of described long connecting rod are hinged, and the other end of long connecting rod is connected on described left chuck or the slide block.
Described driving mechanism support is provided with two section bar guide rails, and the section bar guide rail is provided with motor mounting plate, and described direct current generator is fixed on the described motor mounting plate.
Described counter is a photoelectric counter, and the transmitting terminal of this photoelectric counter and receiving end are installed in the guide rail both sides, the slide block to-and-fro movement once, the count display indicating value adds one.
The link of described guide rod and short connecting rod offers elongated slot, and described axle is arranged in this groove.
On described direct current generator, also be connected with the rotating speed machine governor of a change direct current generator.
Because during testing machine work, velocity of rotation is bigger,, reduce friction so the place of being rotationally connected all is equipped with bearing.Because the rotation of motor, short connecting rod will drive axle along the stem guiding trough to-and-fro movement, back and forth rotate thereby make about guide rod.Long connecting rod is that revolute pair is connected with guide rod, and then makes slide block left and right sides to-and-fro movement on guide rail.Because the length of short connecting rod is constant; Through the position of mobile motor installing plate on the section bar support; Motor rotates a circle can cause that the angle that guide rod rotates also will change, and the displacement of slide block changes then: promptly motor is away from main support, and the displacement of slide block diminishes when then rotating a circle; Motor is near main support, and the displacement of slide block becomes big when rotating a circle, and displacement is a linear change.The right-hand member of left side chuck links to each other with test specimen, and the other end of test specimen will be fixed on the right chuck, move right chuck and can rationally regulate the required length of test specimen; When motor rotates; Slide block with about reciprocatingly slide, drive test specimen and under alternate load, stretched repeatedly, so that accomplish experiment.
The invention has the beneficial effects as follows that can realize under the alternate load effect back and forth stretching, structure is simpler, does not have special parts, process more conveniently that the while can be satisfied stretching displacement 1cm-5cm and changed continuously.
Description of drawings
Fig. 1 is axial projection's synoptic diagram such as of the present invention;
Fig. 2 is a front view of the present invention;
Fig. 3 is the annexation figure of external unit of the present invention;
Label title in the accompanying drawing: 1. pedestal, 2. support, 3. right chuck, 4. left chuck, 5. slide block; 6. guide rail, 7. long connecting rod, 8. guide rod, 9. main support, 10. short connecting rod; 11. motor mounting plate, 12. direct current generators, 13. section bar guide rails, 14. section bar supports, 15.; 16. Switching Power Supply, 17. machine governors, 18. photoelectric counting displays, 19. photoelectric counting transmitting terminals, 20. photoelectric counting receiving ends.
Embodiment
In Fig. 1, on pedestal 1, section bar guide rail 13, direct current generator 12, short connecting rod 10 are pressed certain way and are connected between guide rod 8, long connecting rod 7, slide block 5, left chuck 4, the right chuck 3.Direct current generator 12 is connected with guide rod 8 through short connecting rod 10 and an axle 15, and guide rod 8 is connected with left chuck 4 with slide block 5 through long connecting rod 7.Because during testing machine work, velocity of rotation is bigger,, reduce friction so the revolute pair junction all is equipped with bearing.Because the rotation of motor 12, short connecting rod 10 will drive the axle 15 groove to-and-fro movements along guide rod 8, thereby guide rod about 8 is back and forth rotated.Long connecting rod 7 is that revolute pair is connected with guide rod 8, and then makes slide block 5 left and right sides to-and-fro movement on guide rail 6.The driving mechanism support comprises main support 9 and section bar support 14; Because the length of short connecting rod 10 is constant; Through the position of mobile motor installing plate 11 on section bar support 14; Motor 12 rotates a circle can cause that the angle of guide rod 8 rotations also will change, and the displacement of slide block 5 changes then: promptly motor 8 is away from main support 9, and the displacement of slide block 5 diminishes when then rotating a circle; Motor 12 is near main support 9, and the displacement of slide block 5 becomes big when rotating a circle, and displacement is a linear change.The right-hand member of left side chuck 4 links to each other with test specimen, and the other end of test specimen will be fixed on the right chuck 3, move right chuck 3 and can rationally regulate the required length of test specimen; When motor 12 rotates; Slide block 5 with about reciprocatingly slide, drive test specimen and under alternate load, stretched repeatedly, so that accomplish experiment.
In Fig. 3, the transmitting terminal 19 and the receiving end 20 of photoelectric counter are electrically connected with count display 18, and count display 18 usefulness leads link to each other with Switching Power Supply 16.DC speed-reducing 12 is electrically connected with machine governor 17, and speed regulator 17 links to each other with Switching Power Supply 16 through lead.Slide block 5 slides on guide rail 6, and the transmitting terminal of photoelectric counter 19 and receiving end 20 are placed on the both sides of guide rail respectively, and whenever slide block makes a round trip at transmitting terminal and receiving end, the displayed value of counter adds one.Regulate the knob of machine governor 17, can change the rotating speed of motor 12, thereby regulate the frequency of testing machine work.
Claims (5)
1. the miniature fatigue tester of variable displacement control; It is characterized in that: comprise pedestal (1); This pedestal (1) is provided with rail brackets (6) and driving mechanism support; Described rail brackets (6) is provided with left chuck (4), right chuck (3), counter and slide block (5); Described left chuck (4) is arranged on the slide block (5); Described driving mechanism support is provided with driving mechanism, and this driving mechanism comprises that direct current generator (12), short connecting rod (10), axle (15), guide rod (8) and long connecting rod (7), described direct current generator (12) are fixed on the driving mechanism support (14), and the output shaft of direct current generator (12) is connected with described short connecting rod (10); The middle part of described guide rod (8) is rotatably connected on the driving mechanism support (14); First end of guide rod (8) is connected with short connecting rod (10) through described axle (15), and an end of second end of guide rod (8) and described long connecting rod (7) is hinged, and the other end of long connecting rod (7) is connected on described left chuck (4) or the slide block (5).
2. testing machine according to claim 1; It is characterized in that: comprise main support (9) and section bar support (14) at described driving mechanism support; That rotates in the described guide rod (8) is arranged on the described main support (9); Section bar support (14) is provided with two section bar guide rails (14), and section bar guide rail (14) is provided with motor mounting plate (11), and described direct current generator (12) is fixed on the described motor mounting plate (11).
3. testing machine according to claim 2; It is characterized in that: described counter is a photoelectric counter; Transmitting terminal of this photoelectric counter (19) and receiving end (20) are installed in guide rail (6) both sides, slide block (5) to-and-fro movement once, count display (18) indicating value adds one.
4. according to claim 2 or 3 described testing machines, it is characterized in that: described guide rod (8) offers elongated slot with the link of short connecting rod (1), and described axle is arranged in this groove.
5. testing machine according to claim 4 is characterized in that: the rotating speed machine governor (17) that on described direct current generator (12), also is connected with a change direct current generator (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110321831 CN102507349B (en) | 2011-10-21 | 2011-10-21 | Micro fatigue testing machine with variable displacement control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110321831 CN102507349B (en) | 2011-10-21 | 2011-10-21 | Micro fatigue testing machine with variable displacement control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102507349A true CN102507349A (en) | 2012-06-20 |
| CN102507349B CN102507349B (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110321831 Expired - Fee Related CN102507349B (en) | 2011-10-21 | 2011-10-21 | Micro fatigue testing machine with variable displacement control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102507349B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998617A (en) * | 2012-09-21 | 2013-03-27 | 国家电网公司 | Low-voltage switch mechanical property detecting device |
| CN103353429A (en) * | 2013-06-25 | 2013-10-16 | 南京航空航天大学 | Simple test-piece fatigue testing machine |
| CN105445021A (en) * | 2016-01-08 | 2016-03-30 | 托肯恒山科技（广州）有限公司 | Natural gas high-pressure ball valve life test apparatus |
| CN111114824A (en) * | 2019-12-18 | 2020-05-08 | 贵州华烽电器有限公司 | Device for testing service life of airplane control device |
| CN113933193A (en) * | 2021-10-14 | 2022-01-14 | 哈尔滨工程大学 | Piston ring fatigue testing machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2493924Y (en) * | 2001-04-19 | 2002-05-29 | 郑州机械研究所 | Small loading fatigue tester |
| CN201060097Y (en) * | 2007-06-20 | 2008-05-14 | 中国石油天然气集团公司 | Continuance pipe multi-axis combined load low-cycle fatigue tester |
| CN101324497A (en) * | 2008-07-08 | 2008-12-17 | 奇瑞汽车股份有限公司 | Flexible plate assembly axial fatigue test method |
| CN201622210U (en) * | 2010-03-16 | 2010-11-03 | 陈跃良 | Adjustable fretting fatigue tester |
-
2011
- 2011-10-21 CN CN 201110321831 patent/CN102507349B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2493924Y (en) * | 2001-04-19 | 2002-05-29 | 郑州机械研究所 | Small loading fatigue tester |
| CN201060097Y (en) * | 2007-06-20 | 2008-05-14 | 中国石油天然气集团公司 | Continuance pipe multi-axis combined load low-cycle fatigue tester |
| CN101324497A (en) * | 2008-07-08 | 2008-12-17 | 奇瑞汽车股份有限公司 | Flexible plate assembly axial fatigue test method |
| CN201622210U (en) * | 2010-03-16 | 2010-11-03 | 陈跃良 | Adjustable fretting fatigue tester |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998617A (en) * | 2012-09-21 | 2013-03-27 | 国家电网公司 | Low-voltage switch mechanical property detecting device |
| CN103353429A (en) * | 2013-06-25 | 2013-10-16 | 南京航空航天大学 | Simple test-piece fatigue testing machine |
| CN103353429B (en) * | 2013-06-25 | 2015-12-09 | 南京航空航天大学 | A kind of Simple test-piece fatigue tester |
| CN105445021A (en) * | 2016-01-08 | 2016-03-30 | 托肯恒山科技（广州）有限公司 | Natural gas high-pressure ball valve life test apparatus |
| CN111114824A (en) * | 2019-12-18 | 2020-05-08 | 贵州华烽电器有限公司 | Device for testing service life of airplane control device |
| CN113933193A (en) * | 2021-10-14 | 2022-01-14 | 哈尔滨工程大学 | Piston ring fatigue testing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102507349B (en) | 2013-06-12 |
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