CN207114301U - A kind of beam type fatigue experimental device - Google Patents
A kind of beam type fatigue experimental device Download PDFInfo
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- CN207114301U CN207114301U CN201721089082.7U CN201721089082U CN207114301U CN 207114301 U CN207114301 U CN 207114301U CN 201721089082 U CN201721089082 U CN 201721089082U CN 207114301 U CN207114301 U CN 207114301U
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Abstract
The utility model discloses a kind of beam type fatigue experimental device, including electric vibration table, support, multiple test specimens, pinboard, it is pasted on the resistance strain gage on test specimen surface, the resistance strain gauge electrically connected with resistance strain gage and the data acquisition and analysis system electrically connected with resistance strain gauge, the electric vibration table includes vibration sewing platform base, the level table and shake table stage body being installed on vibration sewing platform base, and it is installed on shake table stage body and the vertical table-board of vibration is driven by shake table stage body, above-mentioned support is arranged on level table, above-mentioned pinboard is arranged in vertical table-board, described test specimen one end is connected by fixture with support, the test specimen other end is connected by attachment means with pinboard；The utility model can carry out fatigue test to multiple test specimens simultaneously, and the test period is shorter and is needed that the size of shake table input stimulus can be adjusted at any time according to experiment, apply situation to obtain the stress needed for sample.
Description
Technical field
It the utility model is related to a kind of beam type fatigue experimental device.
Background technology
At present, as the development of industrial technology and the raising of economic level, various metals, nonmetallic materials are especially new
Material is in all trades and professions extensive use, while being claimed to static characteristics such as the strength of materials, rigidity, to the fatigue of material
Characteristic it is also proposed higher and higher requirement.
For the fatigue properties of material in addition to theoretical calculation and simulation analysis, most reliable method is the fatigue properties to material
Experiment examination is carried out, common used material fatigue tester is tested it at present, and electo hydraulic servocontrolled fatigue testing machine application is more wide
It is general, but mainly have following defect：
1st, test scale load is generally smaller, and the testing machine of big load is expensive.
2nd, test frequency is relatively low, and generally within 30Hz, therefore it is longer often to carry out a fatigue test cycle.
3rd, generally can only disposably fatigue test be carried out to single sample, it is impossible to which multiple samples are tested simultaneously.
4th, it is typically only capable to input sinusoidal loading, examines the fatigue properties of material under alternate stress.
The content of the invention
The purpose of the utility model is：A kind of beam type fatigue experimental device is provided, multiple test specimens can be entered simultaneously
Row fatigue test, the test period is shorter and is needed that the size of shake table input stimulus can be adjusted at any time according to experiment, to obtain sample
Stress needed for product applies situation.
The technical solution of the utility model is：A kind of beam type fatigue experimental device, including electric vibration table, support,
Multiple test specimens, pinboard, the resistance strain gage for being pasted on test specimen surface, the resistance that is electrically connected with resistance strain gage should
Become instrument and the data acquisition and analysis system electrically connected with resistance strain gauge, the electric vibration table includes vibration sewing platform base, peace
Loaded on the level table on vibration sewing platform base and shake table stage body and it is installed on shake table stage body and by shake table stage body band
The vertical table-board of dynamic vibration, above-mentioned support are arranged on level table, and above-mentioned pinboard is arranged in vertical table-board, the experiment
Sample one end is connected by fixture with support, and the test specimen other end is connected by attachment means with pinboard.
Preferably, the level table slides laterally with vibration sewing platform base and is connected, and the support passes through bolt and horizontal stand
Face is connected, and the support both sides are connected by locking device and vibration sewing platform base respectively.Above-mentioned level table is with shaking
Dynamic sewing platform base slides laterally connection, and this experimental rig can be made laterally to finely tune, and the scope of application is wider.And the support both sides difference
It is connected by locking device and vibration sewing platform base, support can be prevented as level table moves along horizontal direction, it is right
Support and level table play positioning action.Wherein, the locking device is preferably adjustable locking device, its support with
In the case that vibration sewing platform base spacing does not wait, space fine-adjusting locking positioning is realized.
One of further technical scheme of the utility model is：The shake table stage body includes signal generator, power is put
Big device, vibrator and support body, wherein signal generator electrically connect with power amplifier, and power amplifier electrically connects with vibrator,
Vibrator is arranged on support body, and vibrator center is provided with vibrating arm, and vibrating arm can carry out transporting up and down in the presence of vibrator
Dynamic, the vertical table-board is fixed on the top of vibrating arm.
Its operation principle is：The signal generator produces signal, by driving vibrator, vibrator after power amplifier
Drive vertical table-board to vibrate by vibrating arm, fatigue test is carried out to test specimen, data acquisition and analysis system should by resistance
Become piece electricity and resistance strain gauge monitors, shown the stress situation of test specimen in real time, experiment operator passes through data acquisition point
The display situation of analysis system, shake table stage body input stimulus size is manually adjusted, applied with obtaining the stress needed for test specimen
Situation.
The two of the further technical scheme of the utility model are：The shake table stage body includes control unit, signal occurs
Device, power amplifier, vibrator and support body, wherein signal generator electrically connect with power amplifier, power amplifier and exciting
Device is electrically connected, and control unit electrically connects with signal generator, data acquisition and analysis system respectively, and vibrator is arranged on support body,
Vibrator center is provided with vibrating arm, and vibrating arm can be moved up and down in the presence of vibrator, and the vertical table-board is fixed
In the top of vibrating arm.
Its operation principle is：The signal generator produces signal, by driving vibrator, vibrator after power amplifier
Drive vertical table-board to vibrate by vibrating arm, fatigue test is carried out to test specimen, data acquisition and analysis system should by resistance
Become piece electricity and resistance strain gauge monitors, shown the stress situation of test specimen and it is fed back into control unit in real time；Control is single
Member adjust automatically shake table stage body input stimulus size, is applied by the data of feedback with obtaining the stress needed for test specimen
Situation.
The utility model has the advantages that：
1. the utility model can carry out fatigue test to multiple test specimens simultaneously, the test period is shorter and according to experiment need
The size of shake table input stimulus can be adjusted at any time, apply situation to obtain the stress needed for sample.
2nd, the utility model is inputted by the use of electric vibration table as driving force, and test load depends on shake table thrust, is tried
It is convenient to test load control.
3rd, the utility model test frequency adjustable extent is wide, generally up to 5Hz~2000Hz, greatlys save test period.
4th, the utility model can also input random load, examination material is under random stress in addition to sinusoidal loading inputs
Fatigue properties.
Brief description of the drawings
Below in conjunction with the accompanying drawings and embodiment is further described to the utility model：
Fig. 1 is structural representation of the present utility model；(it is not drawn into resistance strain gage, resistance strain gauge and data acquisition point
Analysis system)
Fig. 2 is the operation principle structural representation of the utility model embodiment one；
Fig. 3 is the operation principle structural representation of the utility model embodiment two.
Wherein：1 electric vibration table；1-1 vibrates sewing platform base；1-2 level tables；1-3 shake table stage bodies；1-3-1 signals are sent out
Raw device；1-3-2 power amplifiers；1-3-3 vibrators；1-3-4 control units；1-4 vertical table-boards；
2 supports；
3 test specimens；
4 pinboards；
5 attachment means；
6 locking devices；
7 resistance strain gages；
8 resistance strain gauges；
9 data acquisition and analysis systems.
Embodiment
Embodiment one：As illustrated in fig. 1 and 2, a kind of beam type fatigue experimental device, including electric vibration table 1, support 2,
Multiple test specimens 3, pinboard 4, the resistance strain gage 7 for being pasted on the surface of test specimen 3, electrically connect with resistance strain gage 7
Resistance strain gauge 8 and the data acquisition and analysis system 9 electrically connected with resistance strain gauge 8, the electric vibration table 1 include vibration
Sewing platform base 1-1, the level table 1-2 being installed on vibration sewing platform base 1-1 and shake table stage body 1-3 and it is installed on shake table
The vertical table-board 1-4 of vibration is driven on stage body 1-3 and by shake table stage body 1-3, above-mentioned support 2 is arranged on level table 1-2,
Above-mentioned pinboard 4 is arranged on vertical table-board 1-4, and described one end of test specimen 3 is connected by fixture with support 2, the experiment
The other end of sample 3 is connected by attachment means 5 with pinboard 4.Above-mentioned fixture and attachment means 5 are existing routine test device
Material, stationary positioned effect, therefore its concrete structure are mainly played in test to test specimen, does not illustrate and limits.
The shake table stage body 1-3 includes signal generator 1-3-1, power amplifier 1-3-2, vibrator 1-3-3 and frame
Body, wherein signal generator 1-3-1 electrically connect with power amplifier 1-3-2, power amplifier 1-3-2 and vibrator 1-3-3 electricity
Connection, vibrator 1-3-3 are arranged on support body, and vibrator 1-3-3 centers are provided with vibrating arm, and vibrating arm is vibrator 1-3-3's
It can be moved up and down under effect, the vertical table-board 1-4 is fixed on the top of vibrating arm.
Its operation principle is：The signal generator 1-3-1 produces signal, is swashed by being driven after power amplifier 1-3-2
Shaken device 1-3-3, and vibrator 1-3-3 drives vertical table-board 1-4 to vibrate by vibrating arm, and fatigue test, number are carried out to test specimen 3
Pass through resistance strain gage electricity 7 and the monitoring in real time of resistance strain gauge 8, the stress feelings of display test specimen 3 according to acquisition analysis system 9
It is big to manually adjust shake table stage body input stimulus by the display situation of data acquisition and analysis system 9 for condition, experiment operator
It is small, apply situation to obtain the stress needed for test specimen.
Embodiment two：As shown in figs. 1 and 3, a kind of beam type fatigue experimental device, including electric vibration table 1, support 2,
Multiple test specimens 3, pinboard 4, the resistance strain gage for being pasted on the surface of test specimen 3, the electricity electrically connected with resistance strain gage
Resistance deformeter and the data acquisition and analysis system electrically connected with resistance strain gauge, the electric vibration table 1 include vibration stylobate
Seat 1-1, the level table 1-2 being installed on vibration sewing platform base 1-1 and shake table stage body 1-3 and it is installed on shake table stage body
1-3 is upper and the vertical table-board 1-4 of vibration is driven by shake table stage body 1-3, and above-mentioned support 2 is arranged on level table 1-2, above-mentioned
Pinboard 4 is arranged on vertical table-board 1-4, and described one end of test specimen 3 is connected by fixture with support 2, the test specimen 3
The other end is connected by attachment means 5 with pinboard 4.Above-mentioned fixture and attachment means 5 are existing routine test equipment, mainly
Stationary positioned effect, therefore its concrete structure are played in test to test specimen, does not illustrate and limits.
The shake table stage body 1-3 include control unit 1-3-4, signal generator 1-3-1, power amplifier 1-3-2, swash
Shake device 1-3-3 and support body, and wherein signal generator 1-3-1 electrically connects with power amplifier 1-3-2, power amplifier 1-3-2 with
Vibrator 1-3-3 is electrically connected, and control unit 1-3-4 electrically connects with signal generator 1-3-1, data acquisition and analysis system 7 respectively.
Vibrator 1-3-3 is arranged on support body, and vibrator 1-3-3 centers are provided with vibrating arm, and vibrating arm is in the presence of vibrator 1-3-3
It can be moved up and down, the vertical table-board 1-4 is fixed on the top of vibrating arm.
Its operation principle is：The signal generator 1-3-1 produces signal, is swashed by being driven after power amplifier 1-3-2
Shaken device 1-3-3, and vibrator 1-3-3 drives vertical table-board 1-4 to vibrate by vibrating arm, and fatigue test, number are carried out to test specimen 3
Monitored in real time by resistance strain gage 7 and resistance strain gauge 8 according to acquisition analysis system 9, show the stress situation of test specimen 3 simultaneously
It is fed back into control unit 1-3-4；By the data of feedback, adjust automatically shake table stage body inputs to swash control unit 1-3-4
Size is encouraged, applies situation to obtain the stress needed for test specimen.
In above-mentioned two embodiment, the level table 1-2 slides laterally with vibration sewing platform base 1-1 and is connected, and the support 2 is logical
Cross bolt to be connected with level table 1-2, the both sides of support 2 are connected by locking device 6 with vibration sewing platform base 1-1 respectively
It is fixed.Above-mentioned level table 1-2 is slid laterally with vibration sewing platform base 1-1 and is connected, and this experimental rig can be made laterally to finely tune, and is applicable
Scope is wider.And the both sides of support 2 are connected by locking device 6 and vibration sewing platform base 1-1 respectively, support can be prevented
2 are moved along horizontal direction with level table 1-2, and positioning action is played to support 2 and level table 1-2.Wherein, the lock
Tight device 6 is preferably adjustable locking device, and it is not in the case where support 2 and vibration sewing platform base 1-1 spacing waits, between realization
Positioned away from fine-tuning locking.
The utility model can carry out fatigue test to multiple test specimens simultaneously, and the test period is shorter and according to experiment needs
The size of shake table input stimulus can be adjusted at any time, apply situation to obtain the stress needed for sample.
The utility model is inputted by the use of electric vibration table as driving force, and test load depends on shake table thrust, is tested
Load control is convenient.The utility model test frequency adjustable extent is wide, generally reachable 5Hz~2000Hz, when greatling save experiment
Between.The utility model can also input random load in addition to sinusoidal loading inputs, and fatigue of the examination material under random stress is special
Property.
It the above is only concrete application example of the present utility model, do not form any limit to the scope of protection of the utility model
System.In addition to the implementation, the utility model can also have other embodiment.It is all to be formed using equivalent substitution or equivalent transformation
Technical scheme, all fall within the utility model it is claimed within the scope of.
Claims (4)
- A kind of 1. beam type fatigue experimental device, it is characterised in that：Including electric vibration table (1), support (2), multiple experiments Sample (3), pinboard (4), the resistance strain gage (7) for being pasted on test specimen (3) surface, electrically connect with resistance strain gage (7) Resistance strain gauge (8) and the data acquisition and analysis system (9) that is electrically connected with resistance strain gauge (8), the electric vibration table (1) vibration sewing platform base (1-1), the level table (1-2) and shake table stage body (1- that are installed on vibration sewing platform base (1-1) are included 3) and it is installed on shake table stage body (1-3) and the vertical table-board (1-4) of vibration is driven by shake table stage body (1-3), it is above-mentioned Support (2) is arranged on level table (1-2), and above-mentioned pinboard (4) is arranged in vertical table-board (1-4), the test specimen (3) one end is connected by fixture with support (2), and test specimen (3) other end passes through attachment means (5) and pinboard (4) It is connected.
- A kind of 2. beam type fatigue experimental device according to claim 1, it is characterised in that：The shake table stage body (1-3) includes signal generator (1-3-1), power amplifier (1-3-2), vibrator (1-3-3) and support body, and wherein signal occurs Device (1-3-1) electrically connects with power amplifier (1-3-2), and power amplifier (1-3-2) electrically connects with vibrator (1-3-3), swashs The device (1-3-3) that shakes is arranged on support body, and vibrator (1-3-3) center is provided with vibrating arm, work of the vibrating arm in vibrator (1-3-3) It can be moved up and down under, the vertical table-board (1-4) is fixed on the top of vibrating arm.
- A kind of 3. beam type fatigue experimental device according to claim 2, it is characterised in that：The shake table stage body (1-3) also includes control unit (1-3-4), and control unit (1-3-4) is divided with signal generator (1-3-1), data acquisition respectively Analysis system (9) electrically connects.
- A kind of 4. beam type fatigue experimental device according to claim 1 or 2 or 3, it is characterised in that：The horizontal stand Face (1-2) is slid laterally with vibration sewing platform base (1-1) and is connected, and the support (2) is connected solid by bolt with level table (1-2) Fixed, support (2) both sides are connected by locking device (6) and vibration sewing platform base (1-1) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721089082.7U CN207114301U (en) | 2017-08-29 | 2017-08-29 | A kind of beam type fatigue experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721089082.7U CN207114301U (en) | 2017-08-29 | 2017-08-29 | A kind of beam type fatigue experimental device |
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| Publication Number | Publication Date |
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| CN207114301U true CN207114301U (en) | 2018-03-16 |
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| CN201721089082.7U Active CN207114301U (en) | 2017-08-29 | 2017-08-29 | A kind of beam type fatigue experimental device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346122A (en) * | 2019-06-28 | 2019-10-18 | 燕山大学 | Bending fatigue testing device for cantilever design |
| CN112729880A (en) * | 2021-01-25 | 2021-04-30 | 中南大学 | Fatigue test bed for suspension beam of urban rail vehicle |
| CN114136572A (en) * | 2021-11-29 | 2022-03-04 | 中车青岛四方机车车辆股份有限公司 | Test vibration tool, vehicle equipment fatigue test device and method |
-
2017
- 2017-08-29 CN CN201721089082.7U patent/CN207114301U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346122A (en) * | 2019-06-28 | 2019-10-18 | 燕山大学 | Bending fatigue testing device for cantilever design |
| CN110346122B (en) * | 2019-06-28 | 2022-07-15 | 燕山大学 | Bending fatigue test device for cantilever structure |
| CN112729880A (en) * | 2021-01-25 | 2021-04-30 | 中南大学 | Fatigue test bed for suspension beam of urban rail vehicle |
| CN114136572A (en) * | 2021-11-29 | 2022-03-04 | 中车青岛四方机车车辆股份有限公司 | Test vibration tool, vehicle equipment fatigue test device and method |
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