CN108152026A - A kind of rotating structural elements fatigue test device - Google Patents
A kind of rotating structural elements fatigue test device Download PDFInfo
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- CN108152026A CN108152026A CN201711384977.8A CN201711384977A CN108152026A CN 108152026 A CN108152026 A CN 108152026A CN 201711384977 A CN201711384977 A CN 201711384977A CN 108152026 A CN108152026 A CN 108152026A
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- signal
- structural elements
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- rotating structural
- data processor
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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
Abstract
The invention discloses a kind of rotating structural elements fatigue test devices, mechanical part includes pedestal, bearing block, exciting agency, transmission mechanism and signal acquisition mechanism, electric control part includes signal processing switching mechanism, data processor, the vibration data module under load condition and accumulation signal generator, bearing block is fixed on pedestal, exciting agency includes exciting source, connecting rod and the arm of force, the output terminal of the controlled end connection accumulation signal generator of exciting source, exciting source connect the beginning of the arm of force by connecting rod；The transmission mechanism uses axis, pedestal is located on bearing block, tested rotating structural elements are set on axis, signal acquisition mechanism is arranged on tested rotating structural elements, the acquisition signal receiving end of the signal output end connection data processor of signal acquisition mechanism, the output terminal of vibration data module under the communication ends connection load condition of data processor, the receiving terminal of the signal output end connection accumulation signal generator of data processor.
Description
Technical field
The present invention relates to mechanical structured member testing fatigue technical fields more particularly to a kind of rotating structural elements testing fatigue to fill
It puts.
Background technology
In well known technology, the testing fatigue of the parts of mechanical device is tried mainly by making sample using fatigue
Test the test that machine completes parts Fatigue Characteristics of Materials.There are many metal fatigue experiment type, are commonly divided into high cycle fatigue, low week
Fatigue, heat fatigue, impact fatigue, corrosion fatigue, contact fatigue, vacuum fatigue, fatigue at high temperature, room temperature fatigue, fatigue at low temperatures, rotation
Turn flexural fatigue, plain bending fatigue, axially loaded fatigue, torsional fatigue, combined stress fatigue etc..This fatigue properties test
The fatigue properties for reflecting measured parts material are only capable of, it can not be to fatigue caused by being measured the design defect of component structural
Situation carries out Validity Test.
The important means for obtaining structural member dynamic property and design performance is mould measurement technology, this can also estimate and diagnose
Structural member failure that may be present so as to achieve the effect that optimization, has quite a number of open source literature and is described.
Patent《Flexural fatigue test equipment and test system》（Patent No. CN206300855U）It is completed using mechanical structure
The flexural fatigue of part is tested, for the torsional fatigue test of rotational workpieces, has no and has been reported that true parts progress class
As Fatigue Test Research.
Invention content
The object of the present invention is to provide a kind of rotating structural elements fatigue test devices, and measured workpiece can be detected accurately
Go out the degree of fatigue of workpiece, provide the reference value of more science.
The technical solution adopted by the present invention is：
A kind of rotating structural elements fatigue test device, including mechanical part and electric control part, mechanical part includes pedestal, bearing
Seat, exciting agency, transmission mechanism and signal acquisition mechanism, electric control part include signal processing switching mechanism, data processor, bear
Vibration data module and accumulation signal generator under load state, the bearing block are fixed on pedestal, the vibration exciter
Structure includes exciting source, connecting rod and the arm of force, the output terminal of the controlled end connection accumulation signal generator of exciting source, and exciting source passes through company
The beginning of lever-connection-force arm；The transmission mechanism uses axis, and pedestal is located on bearing block, and tested rotating structural elements are set in axis
On, signal acquisition mechanism is arranged on tested rotating structural elements, the signal output end connection data processor of signal acquisition mechanism
Acquisition signal receiving end, data processor communication ends connection load condition under vibration data module output terminal, data
The receiving terminal of the signal output end connection accumulation signal generator of processor.
The signal acquisition mechanism includes vibrating sensor and strain transducer.
The signal processing switching mechanism includes vibration acquisition device and strain acquirement device, and vibration acquisition device is adopted
Collect the signal output end of signal input part connection vibrating sensor, the signal output end connection data processor of vibration acquisition device
First acquisition signal receiving end；The signal output end of the acquisition signal input part connection strain transducer of strain acquirement device,
Second acquisition signal receiving end of the signal output end connection data processor of strain acquirement device.
The bearing block uses two sets, and spacing side by side setting, the left end of axis is set on two bearing blocks.
The axis is divided into the drive connection section of left end and the tested rotating structural elements construction section of right end.
The end of the arm of force is set in the drive connection section of axis, and is rigidly connected with drive connection section.
The exciting source uses vibrator.
The present invention is extracted the rotary part recorded in the vibration data module under load condition by data processor and shaken
The initial data such as dynamic Time Domain Spectrum, electric current Time Domain Spectrum and instantaneous torque dynamic measurement, by data acquisition process, by analysis, know
Not, it recombinates, with reference to superposition period fluctuating signal, forms customized Time Domain Spectrum.According to data analysis situation, certain letter is exported
Number, accumulation signal generator is sent to, accumulation signal generator sends signal according to the order received, then to vibrator, swashs
It shakes device output signal, generates certain exciting, be transmitted on the arm of force by connecting rod, axis can effectively receive vibrator transmission
Torsional oscillation effect.Exciting occurs for axis, and the tested rotating structural elements with moving axis right end vibrate, vibrating sensor and strain
The Vibration Condition and strained situation of the tested rotating structural elements of sensor acquisition in real time, then the signal of acquisition is sent respectively to accordingly
Vibration acquisition device and strain acquirement device, the signal of acquisition is filtered and screened, then clear earth signal is sent to
Data processor by data processor for analysis, processing, finally obtains the fatigue strength parameter value of tested rotating structural elements.
Description of the drawings
Fig. 1 is the front view of the present invention；
Fig. 2 is the left view of the present invention.
Specific embodiment
As depicted in figs. 1 and 2, the present invention includes mechanical part and electric control part, and mechanical part includes pedestal 1, bearing block
2nd, exciting agency, transmission mechanism and signal acquisition mechanism, the bearing block 2 use two sets, and spacing side by side is set, bearing block 2
It is fixed on pedestal 1, pedestal 1 can fix whole device, ensure the balance of whole device.The left end of axis 3 is set in two axis
In bearing 2.The axis 3 is divided into the drive connection section 31 of left end and 7 construction section 32 of tested rotating structural elements of right end.It is described
Exciting agency include exciting source 4, connecting rod 5 and the arm of force 6, exciting source 4 use vibrator, exciting source 4 controlled end connection exciting
The output terminal of signal generator, exciting source 4 connect the beginning of the arm of force 6 by connecting rod 5；The end of the arm of force 6 is set in axis 3
Drive connection section 31, and be rigidly connected with drive connection section 31.The transmission mechanism uses axis 3, and axis 3 is erected at bearing block
On 2, tested rotating structural elements 7 are set on axis 3, and signal acquisition mechanism is arranged on tested rotating structural elements 7.
Electric control part includes signal processing switching mechanism, data processor, the vibration data module under load condition and swashs
Shake signal generator, and the signal acquisition mechanism includes vibrating sensor 8 and strain transducer 9.The signal processing turns
Converting mechanism includes vibration acquisition device and strain acquirement device, the acquisition signal input part connection vibrating sensing of vibration acquisition device
The signal output end of device 8, the first acquisition signal receiving end of the signal output end connection data processor of vibration acquisition device；It should
Become the signal output end of the acquisition signal input part connection strain transducer 9 of harvester, the signal output of strain acquirement device
Second acquisition signal receiving end of end connection data processor.The signal output end connection data processor of signal acquisition mechanism
Acquire signal receiving end, the output terminal of the vibration data module under the communication ends connection load condition of data processor, at data
Manage the receiving terminal of the signal output end connection accumulation signal generator of device.Include in vibration data module under load condition：
The working condition of equipment is carried with reference to user scene band, acquires the vibration Time Domain Spectrum, electric current Time Domain Spectrum and instantaneous torque of rotary part
The initial data such as dynamic measurement.
Illustrate the operation principle of the present invention below in conjunction with the accompanying drawings：
During normal use, first by tested rotating structural elements 7 --- fan, the tested rotation knot of the right end of axis 3 is fixed on by key
On 7 construction section 32 of component.Wherein, key refers to the key in machine driving, is mainly used as circumferentially fixed between axis and parts on shaft
To transmit torque, some keys can also be achieved axial restraint or the axial movement of parts on shaft, such as retarder middle gear and the connection of axis
Knot.Tested rotating structural elements 7 rigid with axis 3 can first will be fixed using key, prevented tested rotating structural elements 7 by the present invention
Circumferential movement occurs, influences test result.
After installing, the rotary part recorded in the vibration data module under data processor extraction load condition shakes
The initial data such as dynamic Time Domain Spectrum, electric current Time Domain Spectrum and instantaneous torque dynamic measurement, by data acquisition process, extract load characteristic
Information by analysis, identification, recombinates, with reference to superposition period fluctuating signal, forms customized Time Domain Spectrum.According to data analysis
Situation exports certain signal, is sent to accumulation signal generator, accumulation signal generator according to the order received, then to
Vibrator sends signal, and vibrator output signal generates certain exciting, is transmitted on the arm of force 6 by connecting rod 5, due to connecting rod 5
It is rigid connection with vibrator and the arm of force 6, so, the output of vibrator can be effectively transmitted on the arm of force 6, meanwhile, by
In the arm of force 6 and axis 3 be to be rigidly connected by key, so, axis 3 can effectively receive vibrator transmission torsional oscillation make
With.Exciting occurs for axis 3, and the tested rotating structural elements 7 with 3 right end of moving axis vibrate.
While tested rotating structural elements 7 vibrate, it is arranged on vibrating sensor 8 on tested rotating structural elements 7 and should
Become the Vibration Condition and strained situation of the tested rotating structural elements 7 of the acquisition in real time of sensor 9, then the signal of acquisition is sent respectively to
Corresponding vibration acquisition device and strain acquirement device, are filtered and screen to the signal of acquisition, then clear earth signal is sent out
Data processor is given, by data processor for analysis, processing, finally obtains the fatigue strength parameter value of tested rotating structural elements 7.
Wherein, vibrating sensor 8 and strain transducer 9 are rigidly fixed on tested rotating structural elements 7, and are fixed on and are shaken
On dynamic, the obvious region of strain-responsive so that the data of acquisition are more true, effective.
The component of machine fatigue test device of the present invention, testing fatigue can be carried out on Components ontology, is not only simplified
Testing scheme, and can be fully under analogue zero component load working condition service condition, can fully reflect component structural
The defects of in design.Compared with prior art, the device intelligence degree is high, and manual intervention is few, can complete component structural
Testing fatigue retrofits to component structural and provides advisory opinion.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：It is still
It can modify and either which part or all technical features be carried out etc. to the technical solution recorded in previous embodiment
With replacement；And these modifications or replacement, technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution
Range.
Claims (7)
1. a kind of rotating structural elements fatigue test device, it is characterised in that：Including mechanical part and electric control part, Machinery Ministry subpackage
Pedestal, bearing block, exciting agency, transmission mechanism and signal acquisition mechanism are included, electric control part includes signal processing switching mechanism, number
According to the vibration data module and accumulation signal generator under processor, load condition, the bearing block is fixed on pedestal, institute
The exciting agency stated includes exciting source, connecting rod and the arm of force, and the output terminal of the controlled end connection accumulation signal generator of exciting source swashs
Vibration source connects the beginning of the arm of force by connecting rod；The transmission mechanism uses axis, and pedestal is located on bearing block, is tested rotational structure
Part is set on axis, and signal acquisition mechanism is arranged on tested rotating structural elements, the signal output end connection of signal acquisition mechanism
The acquisition signal receiving end of data processor, the communication ends of data processor connect the defeated of the vibration data module under load condition
Outlet, the receiving terminal of the signal output end connection accumulation signal generator of data processor.
2. rotating structural elements fatigue test device according to claim 1, it is characterised in that：The signal acquisition mechanism
Including vibrating sensor and strain transducer.
3. rotating structural elements fatigue test device according to claim 2, it is characterised in that：The signal processing conversion
Mechanism includes vibration acquisition device and strain acquirement device, the acquisition signal input part connection vibrating sensor of vibration acquisition device
Signal output end, vibration acquisition device signal output end connection data processor first acquisition signal receiving end；Strain
The signal output end of the acquisition signal input part connection strain transducer of harvester, the signal output end of strain acquirement device connect
Connect the second acquisition signal receiving end of data processor.
4. rotating structural elements fatigue test device according to claim 1, it is characterised in that：The bearing block uses two
Set, spacing side by side setting, the left end of axis are set on two bearing blocks.
5. rotating structural elements fatigue test device according to claim 1, it is characterised in that：The axis is divided into left end
Drive connection section and right end tested rotating structural elements construction section.
6. rotating structural elements fatigue test device according to claim 5, it is characterised in that：The end set of the arm of force
The drive connection section of axis is located at, and is rigidly connected with drive connection section.
7. rotating structural elements fatigue test device according to claim 1, it is characterised in that：The exciting source is using sharp
Shake device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711384977.8A CN108152026A (en) | 2017-12-20 | 2017-12-20 | A kind of rotating structural elements fatigue test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711384977.8A CN108152026A (en) | 2017-12-20 | 2017-12-20 | A kind of rotating structural elements fatigue test device |
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| CN108152026A true CN108152026A (en) | 2018-06-12 |
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| CN201711384977.8A Pending CN108152026A (en) | 2017-12-20 | 2017-12-20 | A kind of rotating structural elements fatigue test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649926A (en) * | 2020-06-08 | 2020-09-11 | 中国航发北京航空材料研究院 | Axial and vibration high-low cycle composite fatigue test device |
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| JP2008082879A (en) * | 2006-09-27 | 2008-04-10 | Toshiba Corp | Device and method for measuring torsional vibration |
| CN103323195A (en) * | 2013-07-06 | 2013-09-25 | 北京航空航天大学 | Whirling vibration excitation and dynamic measurement device |
| CN103353383A (en) * | 2013-07-31 | 2013-10-16 | 沈阳工程学院 | Experimental apparatus for testing vibration mode of simulated impeller of turbine |
| CN103759940A (en) * | 2014-01-17 | 2014-04-30 | 雪龙集团股份有限公司 | Test bed and method for testing damping of silicone oil clutch of engine cooling fan |
| CN103939296A (en) * | 2014-04-17 | 2014-07-23 | 浙江大学 | Offshore wind turbine simulation experiment device |
| CN105258887A (en) * | 2015-10-22 | 2016-01-20 | 西安热工研究院有限公司 | Blade dynamic frequency test apparatus using magnetic excitation |
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2017
- 2017-12-20 CN CN201711384977.8A patent/CN108152026A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008082879A (en) * | 2006-09-27 | 2008-04-10 | Toshiba Corp | Device and method for measuring torsional vibration |
| CN103323195A (en) * | 2013-07-06 | 2013-09-25 | 北京航空航天大学 | Whirling vibration excitation and dynamic measurement device |
| CN103353383A (en) * | 2013-07-31 | 2013-10-16 | 沈阳工程学院 | Experimental apparatus for testing vibration mode of simulated impeller of turbine |
| CN103759940A (en) * | 2014-01-17 | 2014-04-30 | 雪龙集团股份有限公司 | Test bed and method for testing damping of silicone oil clutch of engine cooling fan |
| CN103939296A (en) * | 2014-04-17 | 2014-07-23 | 浙江大学 | Offshore wind turbine simulation experiment device |
| CN105258887A (en) * | 2015-10-22 | 2016-01-20 | 西安热工研究院有限公司 | Blade dynamic frequency test apparatus using magnetic excitation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111649926A (en) * | 2020-06-08 | 2020-09-11 | 中国航发北京航空材料研究院 | Axial and vibration high-low cycle composite fatigue test device |
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