CN202562796U - Resonance bending type fatigue testing machine - Google Patents
Resonance bending type fatigue testing machine Download PDFInfo
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- CN202562796U CN202562796U CN2012202265111U CN201220226511U CN202562796U CN 202562796 U CN202562796 U CN 202562796U CN 2012202265111 U CN2012202265111 U CN 2012202265111U CN 201220226511 U CN201220226511 U CN 201220226511U CN 202562796 U CN202562796 U CN 202562796U
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Abstract
A resonance bending type fatigue testing machine relates to a fatigue testing machine, and aims to solve the problem that a current resonance bending type fatigue testing machine is imported and is high in cost. The fatigue testing machine adopts the structure that a framework is horizontally arranged; a dead-end support point and clamping workpiece and a running-end support point and clamping workpiece are sequentially installed on the framework from left to right in a sliding manner; a dead-end clamping distance adjusting device is fixedly mounted on the left side of the dead-end support point and clamping workpiece; a running-end clamping distance adjusting device is fixedly mounted on the right side of the running-end support point and clamping workpiece; a test piece is arranged on the dead-end support point and clamping workpiece and the running-end support point and clamping workpiece in a penetration manner; a dead-end end cover is covered at the left end of the test piece, and a running-end end cover is covered at the right end of the test piece; an eccentric mass block is rotatably mounted on the left side of the running-end cover; and a variable-frequency motor is fixedly mounted at the right end of the framework. The fatigue testing machine is suitable for the fatigue test of marine risers and submarine pipelines.
Description
Technical field
The utility model relates to a kind of fatigue tester, is specifically related to a kind of resonance bending-type fatigue tester, belongs to product testing testing equipment field.
Background technology
Resonance bending-type fatigue tester is a kind of test unit in the mechanical industry, can carry out repeated bend test to marine riser and subsea pipeline, also can carry out torture test to other tubing.At present domestic fatigue study to marine riser and subsea pipeline does not seldom have the existence of correlation test machine product.The marine riser of existing main flow and the torture test of subsea pipeline divide following several method: axial tension method, four-point bending torture test method, rotary bending fatigue test method, resonance repeated bend test method.The repeated bend test that wherein resonates method is high with its vibration frequency, the test period is short, adapt to advantages such as full-scale marine riser and subsea pipeline has become the marine riser of main flow and the fatigue test method of subsea pipeline in the world; But existing resonance fatigue bending machine needs import, has the high problem of cost.
The utility model content
The purpose of the utility model is to need import in order to solve existing resonance fatigue bending machine, has the high problem of cost, and then a kind of resonance bending-type fatigue tester is provided.
The technical scheme of the utility model is: a kind of resonance bending-type fatigue tester comprises framework, dead end clamping distance adjusting gear, dead end end cap, dead end fulcrum and clamping work pieces, live end fulcrum and clamping work pieces, eccentric massblock, end end cap alive, universal coupling, variable-frequency motor and the end clamping distance adjusting gear of living; Framework is horizontally disposed with; Dead end fulcrum and clamping work pieces are slidingly mounted on the framework with live end fulcrum and clamping work pieces from left to right successively; Dead end clamping distance adjusting gear is packed in the left side of dead end fulcrum and clamping work pieces; And the distance between adjustment dead end fulcrum and clamping work pieces and end fulcrum alive and the clamping work pieces; The end clamping distance adjusting gear of living is packed in the right side of live end fulcrum and clamping work pieces; And the distance between adjustment dead end fulcrum and clamping work pieces and end fulcrum alive and the clamping work pieces, test specimen is located on dead end fulcrum and clamping work pieces and live end fulcrum and the clamping work pieces, and the dead end end cap covers the left end that is contained in test specimen; The end end cap lid of living is contained in the right-hand member of test specimen; Eccentric massblock is rotatably installed in the left side of the end end cap of living, and variable-frequency motor is packed in the right-hand member of framework, and is fixedly connected through universal coupling between the output terminal of variable-frequency motor and the eccentric massblock.
The utility model compared with prior art has following effect: 1. the utility model is simple in structure, and is easily manufactured, and cost is low.2. the utility model has shortened the time of marine riser and subsea pipeline torture test in process of the test, and can reach unattended operation.
Description of drawings
Fig. 1 is the vertical view of the utility model; Fig. 2 is the front view of the utility model; Fig. 3 is the cut-open view of Fig. 2 at the A-A place; Fig. 4 is the cut-open view of Fig. 2 at the B-B place; Fig. 5 is the cut-open view of Fig. 2 at the C-C place.
Embodiment
Embodiment one: combine Fig. 1-Fig. 3 and Fig. 5 that this embodiment is described; A kind of resonance bending-type fatigue tester of this embodiment comprises framework 1, dead end clamping distance adjusting gear 2, dead end end cap 3, dead end fulcrum and clamping work pieces 4, live end fulcrum and clamping work pieces 5, eccentric massblock 6, end end cap 7 alive, universal coupling 8, variable-frequency motor 9 and the end clamping distance adjusting gear 10 of living; Framework 1 is horizontally disposed with; Dead end fulcrum and clamping work pieces 4 are slidingly mounted on the framework 1 with live end fulcrum and clamping work pieces 5 from left to right successively; Dead end clamping distance adjusting gear 2 is packed in the left side of dead end fulcrum and clamping work pieces 4; And the distance between adjustment dead end fulcrum and clamping work pieces 4 and end fulcrum alive and the clamping work pieces 5, end clamping distance adjusting gear 10 alive is packed in to live holds the right side of fulcrum and clamping work pieces 5, and the distance between adjustment dead end fulcrum and clamping work pieces 4 and end fulcrum alive and the clamping work pieces 5; Test specimen 12 is located in the dead end fulcrum and clamping work pieces 4 is held on fulcrum and the clamping work pieces 5 with living; Dead end end cap 3 lids are contained in the left end of test specimen 12, and end end cap 7 lids of living are contained in the right-hand member of test specimen 12, and eccentric massblock 6 is rotatably installed in the left side of the end end cap 7 of living; Variable-frequency motor 9 is packed in the right-hand member of framework 1, and is fixedly connected through universal coupling 8 between the output terminal of variable-frequency motor 9 and the eccentric massblock 6.
The framework 1 of this embodiment supports as the whole test machine; And live end fulcrum and clamping work pieces 5 are fixed on the framework 1 with dead end fulcrum and clamping work pieces 4, adjust two distances between the clamping tool through the end clamping distance adjusting gear 10 of living, dead end clamping distance adjusting gear 2; Variable-frequency motor 9 exports universal coupling 8 to and drives eccentric massblocks 6 and rotate, and through its eccentric massblock 6 rotation is converted into vibration; The end end cap 7 of living uses with marine riser and subsea pipeline for blocking test with dead end end cap 3, can make it keep internal pressure, simulates its service pressure and reduces its natural frequency.On the dead end end cap 3 pressure switch is installed, when test with marine riser and subsea pipeline in the torture test process when damaged, inner decompression, and this signal of pressure switch detection thus, the while stops this equipment automatically.
Embodiment two: combine Fig. 1-Fig. 3 that this embodiment is described; The dead end clamping distance adjusting gear 2 of this embodiment comprises dead end brace summer 2-1 and dead end adjusting clamp 2-2; Dead end brace summer 2-1 is packed on the framework 1; The end of dead end adjusting clamp 2-2 is packed in the bottom of dead end brace summer 2-1, and the other end of dead end adjusting clamp 2-2 is packed in the bottom of dead end fulcrum and clamping work pieces 4.So be provided with, be convenient to adjust the distance between dead end fulcrum and clamping work pieces 4 and end fulcrum alive and the clamping work pieces 5.Other composition is identical with embodiment one with annexation.
Embodiment three: combine Fig. 1-Fig. 4 that this embodiment is described; Dead end fulcrum of this embodiment and clamping work pieces 4 comprise dead end support 4-1 and dead end four paws chuck 4-2; Dead end support 4-1 is slidingly mounted on the framework 1, and dead end four paws chuck 4-2 is packed on the dead end support 4-1.So be provided with, be convenient to support and clamping test specimen.Other composition is identical with embodiment one or two with annexation.
Embodiment four: combine Fig. 1-Fig. 3 that this embodiment is described; The end clamping distance adjusting gear 10 of living of this embodiment comprises live the end brace summer 10-1 and the end adjusting clamp 10-2 that lives; The end brace summer 10-1 that lives is packed on the framework 1; The end of holding adjusting clamp 10-2 of living is packed in bottom of holding brace summer 10-1 alive, and the other end of the end adjusting clamp 10-2 that lives is packed in bottom of holding fulcrum and clamping work pieces 5 alive.So be provided with, be convenient to adjust the distance between dead end fulcrum and clamping work pieces 4 and end fulcrum alive and the clamping work pieces 5.Other composition is identical with embodiment one or three with annexation.
Embodiment five: combine Fig. 1-Fig. 3 that this embodiment is described; Living of this embodiment holds fulcrum and clamping work pieces 5 to comprise the end support 5-1 alive and the end four paws chuck 5-2 that lives; The end support 5-1 that lives is slidingly mounted on the framework 1, and the end four paws chuck 5-2 that lives is packed on the end support 5-1 alive.So be provided with, be convenient to support and clamping test specimen.Other composition is identical with embodiment four with annexation.
Embodiment six: combine Fig. 1-Fig. 3 that this embodiment is described, the universal coupling 8 of this embodiment is telescopic universal coupling.So be provided with, be convenient to drive eccentric massblock 6 motions.Other composition is identical with embodiment one or five with annexation.
The principle of work of the utility model is:
At first according to test with sample specification, testing requirements, test parameters, defer to condition such as standard through mathematical analysis calculating and FEM calculation, draw zero point (rest point), natural vibration frequency, required inherent characteristic data such as amplitude of the intrinsic wave direction amplitude of the flexural vibrations of test specimen; Motor output original frequency; Secondly, according to testing requirements decision strain-ga(u)ge transducer installation site and installation method; After the operational system; The data that foil gauge obtains are transferred to the upper software of industrial computer and are handled after strainmeter is handled; And through (to) strain data carries out the actual vibration frequency that Fast Fourier Transform (FFT) draws test specimen, gathers vibration data, the total periodicity of record vibration; And make comparisons with relevant criterion both at home and abroad, draw test findings.Simultaneously, frequency converter, variable-frequency motor, constitute closed loop speed control system,, control the vibration frequency that rises of testing machine, reach test objective through accurate control motor rotation speed with scrambler.
Claims (6)
1. resonance bending-type fatigue tester; It is characterized in that: it comprises framework (1), dead end clamping distance adjusting gear (2), dead end end cap (3), dead end fulcrum and clamping work pieces (4), live end fulcrum and clamping work pieces (5), eccentric massblock (6), end end cap (7) alive, universal coupling (8), variable-frequency motor (9) and the end clamping distance adjusting gear (10) of living; Framework (1) is horizontally disposed with; Dead end fulcrum and clamping work pieces (4) and end fulcrum alive and clamping work pieces (5) are slidingly mounted on the framework (1) from left to right successively; Dead end clamping distance adjusting gear (2) is packed in the left side of dead end fulcrum and clamping work pieces (4); And the distance between adjustment dead end fulcrum and clamping work pieces (4) and end fulcrum alive and the clamping work pieces (5); The end clamping distance adjusting gear (10) of living is packed in the right side of live end fulcrum and clamping work pieces (5); And the distance between adjustment dead end fulcrum and clamping work pieces (4) and end fulcrum alive and the clamping work pieces (5), test specimen (12) is located on dead end fulcrum and clamping work pieces (4) and live end fulcrum and the clamping work pieces (5), and dead end end cap (3) lid is contained in the left end of test specimen (12); End end cap (7) lid of living is contained in the right-hand member of test specimen (12); Eccentric massblock (6) is rotatably installed in the left side of the end end cap (7) of living, and variable-frequency motor (9) is packed in the right-hand member of framework (1), and is fixedly connected through universal coupling (8) between the output terminal of variable-frequency motor (9) and the eccentric massblock (6).
2. according to the said a kind of resonance bending-type fatigue tester of claim 1; It is characterized in that: said dead end clamping distance adjusting gear (2) comprises dead end brace summer (2-1) and dead end adjusting clamp (2-2); Dead end brace summer (2-1) is packed on the framework (1); One end of dead end adjusting clamp (2-2) is packed in the bottom of dead end brace summer (2-1), and the other end of dead end adjusting clamp (2-2) is packed in the bottom of dead end fulcrum and clamping work pieces (4).
3. according to claim 1 or 2 said a kind of resonance bending-type fatigue testers; It is characterized in that: said dead end fulcrum and clamping work pieces (4) comprise dead end support (4-1) and dead end four paws chuck (4-2); Dead end support (4-1) is slidingly mounted on the framework (1), and dead end four paws chuck (4-2) is packed on the dead end support (4-1).
4. according to the said a kind of resonance bending-type fatigue tester of claim 1; It is characterized in that: the said end clamping distance adjusting gear (10) of living comprises live the end brace summer (10-1) and the end adjusting clamp (10-2) of living; The end brace summer (10-1) of living is packed on the framework (1); The end of holding adjusting clamp (10-2) of living is packed in bottom of holding brace summer (10-1) alive, and the other end of the end adjusting clamp (10-2) of living is packed in bottom of holding fulcrum and clamping work pieces (5) alive.
5. according to claim 1 or 4 said a kind of resonance bending-type fatigue testers; It is characterized in that: said living holds fulcrum and clamping work pieces (5) to comprise end support alive (5-1) and end four paws chuck (5-2) alive; The end support (5-1) of living is slidingly mounted on the framework (1), and the end four paws chuck (5-2) of living is packed on the end support alive (5-1).
6. according to the said a kind of resonance bending-type fatigue tester of claim 1, it is characterized in that: said universal coupling (8) is telescopic universal coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202265111U CN202562796U (en) | 2012-05-16 | 2012-05-16 | Resonance bending type fatigue testing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202265111U CN202562796U (en) | 2012-05-16 | 2012-05-16 | Resonance bending type fatigue testing machine |
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| CN202562796U true CN202562796U (en) | 2012-11-28 |
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| CN2012202265111U Expired - Fee Related CN202562796U (en) | 2012-05-16 | 2012-05-16 | Resonance bending type fatigue testing machine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913972A (en) * | 2014-12-17 | 2015-09-16 | 天津城建大学 | Multi-station clamping device for fuel gas pipeline laser shock test |
| CN107389470A (en) * | 2017-08-09 | 2017-11-24 | 中国石油天然气集团公司 | A kind of full-scale rotary bending fatigue test device and method of oil well pipe |
| CN108362586A (en) * | 2018-03-01 | 2018-08-03 | 吉林大学 | Resonate fatigue bending machine |
| CN109030249A (en) * | 2018-07-27 | 2018-12-18 | 海洋石油工程股份有限公司 | The full scale fatigue test method of Deep Water Steel catenary riser welding point |
| CN111458241A (en) * | 2020-03-11 | 2020-07-28 | 天津大学 | Servo coaxial dual-drive inertia vibration exciter |
| CN113324716A (en) * | 2020-02-28 | 2021-08-31 | 天津益普科技发展有限公司 | Inertia type vibration exciter of full-size pipeline resonance fatigue testing machine |
| CN113899617A (en) * | 2021-09-28 | 2022-01-07 | 天津大学 | Fulcrum position adjusting device for full-size pipeline resonance bending fatigue testing machine |
-
2012
- 2012-05-16 CN CN2012202265111U patent/CN202562796U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913972A (en) * | 2014-12-17 | 2015-09-16 | 天津城建大学 | Multi-station clamping device for fuel gas pipeline laser shock test |
| CN104913972B (en) * | 2014-12-17 | 2017-09-22 | 天津城建大学 | Multistation clamping device is used in a kind of gas pipeline laser-impact experiment |
| CN107389470A (en) * | 2017-08-09 | 2017-11-24 | 中国石油天然气集团公司 | A kind of full-scale rotary bending fatigue test device and method of oil well pipe |
| CN107389470B (en) * | 2017-08-09 | 2020-07-14 | 中国石油天然气集团公司 | Full-size rotating bending fatigue test device and method for oil well pipe |
| CN108362586A (en) * | 2018-03-01 | 2018-08-03 | 吉林大学 | Resonate fatigue bending machine |
| CN109030249A (en) * | 2018-07-27 | 2018-12-18 | 海洋石油工程股份有限公司 | The full scale fatigue test method of Deep Water Steel catenary riser welding point |
| CN113324716A (en) * | 2020-02-28 | 2021-08-31 | 天津益普科技发展有限公司 | Inertia type vibration exciter of full-size pipeline resonance fatigue testing machine |
| CN111458241A (en) * | 2020-03-11 | 2020-07-28 | 天津大学 | Servo coaxial dual-drive inertia vibration exciter |
| CN113899617A (en) * | 2021-09-28 | 2022-01-07 | 天津大学 | Fulcrum position adjusting device for full-size pipeline resonance bending fatigue testing machine |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20140516 |