CN105784302A - Automobile modal testing apparatus and method - Google Patents
Automobile modal testing apparatus and method Download PDFInfo
- Publication number
- CN105784302A CN105784302A CN201610070317.1A CN201610070317A CN105784302A CN 105784302 A CN105784302 A CN 105784302A CN 201610070317 A CN201610070317 A CN 201610070317A CN 105784302 A CN105784302 A CN 105784302A
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- China
- Prior art keywords
- stand
- vibrator
- lower carrier
- carrier plate
- vibration exciter
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/06—Multidirectional test stands
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention relates to a vibration exciter stand which uses a screw to realize an elevating function of the vibration exciter. A free directive wheel is mounted at the bottom of the stand for adjusting the direction of a vibration exciter. A support which is connected to the vibration exciter can adjust exciting angles of the vibration exciter. Therefore, a multi-direction adjusting function of the vibration exciter is realized. The vibration exciter stand is composed of seven assemblies which are the vibration exciter, the vibration exciter stand, a stand supporting plate, an elevating pillar, the screw, a stand supporting leg, and the directive wheel. The multi-direction adjusting stand can achieve multi-direction adjusting function of the vibration exciter, can guarantee that under different conditions the vibration exciter can vertically excite excitation points and output accurate excitation signals, and at the same time the multi-direction adjusting stand can reduce workload of overlapping the vibration exciter stand and increase work efficiency.
Description
Technical field
The present invention relates to a kind of technical field being applied to different automobile types and its automobile mode being carried out accurately test, specifically a kind of automobile mould measurement device and method.
Background technology
Along with development and the living standard of automobile improve day by day, people are also more and more higher to the requirement of comprehensive vehicle performance, the vibration of automobile, noise and driver comfort are again the most important things that people pay close attention to, and this optimization allowing for the dynamic characteristic to automotive system is particularly important；Modal analysis method is one of main method optimizing automotive system dynamic characteristic, adopt modal analysis method can obtain the parameter of performance structure dynamic characteristic, and then the vibration characteristics of structural system is analyzed, the final design for structure and optimize data support is provided, for instance Patent publication No is CN104596716A, patent name is the test system in the patent application of " inertial exciter vibration test system "；In automobile mould measurement, need to use vibrator that automobile is applied exciting force, mould measurement is carried out by the response signal of sensor acquisition measuring point and then to automobile, generally choose point that on the side girder of chassis two, in paired linea angulata region, rigidity is bigger as impacting point, according to different automobile types, need to overlap in vibrator bottom stand during traditional test, so that exciting face can be applied vertical exciting force by vibrator, but owing to different vehicle chassis clearance is different, tradition vibrator stand exists highly non-adjustable, direction regulates the situations such as inconvenience, in turn result in workload to increase, effect reduces.
Summary of the invention
The invention aims to solve vibrator lift in height, the problems such as direction adjustment, it is thus provided that a multi-direction scalable vibrator stand, this device can the excitation angle of multidirectional adjustment exciting force, thus improving vehicle body to accept the accuracy of signal, this vibrator stand uses screw mandrel to realize vibrator elevating function, and free deflecting roller adjusting vibration exciter direction is installed bottom stand, the exciting angle of the support scalable vibrator being connected with vibrator, thus realizing the multi-direction adjustable function of vibrator, by regulating base board stud, unsettled deflecting roller, staging position is made to fix, the mode held out against by bolt between vibrator stand upper supporting plate and lifting column is fixed, prevent vibrator from occurring rocking in exciting process.
nullThe technical solution used in the present invention is: a kind of automobile mould measurement device and method，Including vibrator，What be characterized in that vibrator is installed below exciter support，Vibrator both sides are provided with screwed hole，Vibrator is connected with exciter support by bolt，Rubber sheet gasket it is furnished with between bolt and exciter support，Exciter support both sides are the straight plate of isosceles trapezoid，Each side beat a through hole，Exciter support is arranged below upper supporting plate and two stand support plates of lower carrier plate，Upper supporting plate and lower carrier plate have four and eight through holes，The screw mandrel for lift platform upper supporting plate it is connected between upper supporting plate and lower carrier plate，The upper and lower two ends of screw mandrel and upper lower carrier plate weld together，Lifting support is welded on lower carrier plate，And traverse upper supporting plate through hole，Fixed by bolt and upper supporting plate，The left and right sides, lower section of lower carrier plate is each provided with an adjustable stand supporting leg，Four deflecting rollers it are uniformly distributed circumferentially bottom lower carrier plate，Deflecting roller adopts, with stand supporting leg, the structure cooperated，Deflecting roller base is welded on bottom lower carrier plate，Lower carrier plate is provided with four through holes and is welded with nut bottom it，Stand supporting leg is arranged on lower carrier plate by nut and through hole.Thus, vibrator stand can be fitted together by above-mentioned steps.
Automobile mould measurement device and method, its vibrator stand using method is as follows:
Step (1): after being arranged on stand by vibrator, moves to impacting point bottom by stand, it is determined that the direction of excitation of good vibrator, rotary stand supporting leg, and deflecting roller is departed from ground；
Step (2): after vibrator stand integral position determines, adjusting vibration exciter exciting angle, make exciting rod parallel with the normal direction on impacting point surface；
Step (3): rotating threaded shaft, adjusting vibration exciter rack levels, exciting rod is directed at impacting point, vibrator sensor is installed at exciting rod top, sensor is pasted onto on exciting face, vibrator stand overlap joint is complete.
As preferably, 360 ° of adjustable deflecting rollers being selected to be arranged on bottom vibrator stand, it is possible to more flexibly and conveniently the integral position of adjusting vibration exciter stand.
As preferably, stand supporting leg should be furnished with location nut, is being propped up after overhead by deflecting roller, is tightening location nut, fixed by supporting leg, so can be effectively improved the stability of stand.
As preferably, arranging bolt at the circular hole place of lifting support traverse upper supporting plate, after being tightened by bolt, bolt withstands lifting support, plays the effect that restriction pillar moves, improves the stability of vibrator stand further.
As preferably, when vibrator and support are bolted, need between bolt head and support rubber sheet gasket is installed, after regulating exciting angle, the excitation angle of vibrator is ensured by tighting a bolt, install rubber sheet gasket additional, it is possible to improve the stability between vibrator and support, it is ensured that the concordance of direction of excitation.
The invention has the beneficial effects as follows, by using this multidirectional adjustment stand, it may be achieved the multi-direction regulatory function of vibrator, ensure under different operating modes, vibrator can both vertical drive impacting point, export pumping signal accurately, reduce the workload of overlap joint vibrator stand simultaneously, improve work efficiency.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and example, the present invention is further described；
Fig. 1 is vibrator stand front view；
Fig. 2 is vibrator stand top view；
Fig. 3 is upper supporting plate schematic diagram；
Fig. 4 is lower carrier plate schematic diagram；
Accompanying drawing labelling is as follows: 1, vibrator 2, exciter support 3, stand support plate 301, upper supporting plate 302, lower carrier plate
4, lifting support 5, screw mandrel 6, stand supporting leg 7, deflecting roller.
Detailed description of the invention
nullAs shown in Figure 1，The present invention relates to a kind of automobile mould measurement device and method，Including vibrator，Wherein vibrator be installed below exciter support，Vibrator both sides are provided with screwed hole，Vibrator is connected with exciter support by bolt，Rubber sheet gasket it is furnished with between bolt and exciter support，Exciter support both sides are the straight plate of isosceles trapezoid，Each side beat a through hole，Exciter support is arranged below upper supporting plate and two stand support plates of lower carrier plate，Upper supporting plate and lower carrier plate have four and eight through holes，The screw mandrel for lift platform upper supporting plate it is connected between upper supporting plate and lower carrier plate，The upper and lower two ends of screw mandrel and upper lower carrier plate weld together，Lifting support is welded on lower carrier plate，And traverse upper supporting plate through hole，Fixed by bolt and upper supporting plate，The left and right sides, lower section of lower carrier plate is each provided with an adjustable stand supporting leg，Four deflecting rollers it are uniformly distributed circumferentially bottom lower carrier plate，Deflecting roller 7 adopts, with stand supporting leg, the structure cooperated，Deflecting roller base is welded on bottom lower carrier plate，Lower carrier plate is provided with four through holes and is welded with nut bottom it，Stand supporting leg is arranged on lower carrier plate by nut and through hole.
Thus, vibrator stand can be fitted together by above-mentioned steps.
Automobile mould measurement device and method, its vibrator stand using method is as follows:
Step (1): after being arranged on stand by vibrator, moves to impacting point bottom by stand, it is determined that the direction of excitation of good vibrator, rotary stand supporting leg, and deflecting roller is departed from ground；
Step (2): after vibrator stand integral position determines, adjusting vibration exciter exciting angle, make exciting rod parallel with the normal direction on impacting point surface；
Step (3): rotating threaded shaft, adjusting vibration exciter rack levels, exciting rod is directed at impacting point, vibrator sensor is installed at exciting rod top, sensor is pasted onto on exciting face, vibrator stand overlap joint is complete.
Example 1:
A kind of automobile mould measurement device, wherein the upper lower carrier plate of vibrator stand is thickness is the steel plate of 10mm, and diameter is 560mm.Support plate has the through hole that diameter is 25mm, on upper supporting plate uniform four, on lower carrier plate uniform eight.The diameter of lifting column is 24mm, long 400mm.Lifting column is together with purgation plate, through upper supporting plate through hole, is fixed by bolt and upper supporting plate.Screw mandrel limiting altitude is 380mm, and upper and lower two ends and upper lower carrier plate weld together, and realize stand elevating function by rotary screw.Stand height of landing leg 160mm, major diameter of thread 24mm.When behind the position determining stand, rotary stand supporting leg, props up overhead by stand deflecting roller, fixed rack integral position.Vibrator exciting angle-adjusting bracket base dimensions is long 210mm, wide 177mm, backing thickness 8mm.Support both sides are the straight plate of isosceles trapezoid, and the upper length of side is 60mm, and the lower length of side is 210mm, and the position far from top 26mm, the left and right sides is each, and to have beaten a diameter be the through hole of 16mm.Vibrator both sides are provided with screwed hole, and vibrator is connected with support by bolt.Rubber sheet gasket it is furnished with, when, after vibrator exciting angle-determining, tightening bolt and just vibrator can be fixed between bolt and support.
Example 2:
This exciter apparatus, by regulating rack levels and vibrator excitation angle, is applicable to the automobile mode experiment of different automobile types.Stand regulative mode is simple, and structural reliability is strong, is effectively improved the accuracy of mode test result.Specifically used method is as follows:
In step (1), use lifting machine that test vehicle is lifted away from ground, below four-wheel, put four iron four footstools, reduce lifting machine and test vehicle is placed on four metal stool.Promote chassis height off the ground, it is simple to placement sensor and vibrator stand.
In step (2), in front and back end, chassis, each selection one place's rigidity is greatly and not the position impacting point as vibrator of vibration nodal point.In order to realize two vibrators, car sound is exported the exciting force in three directions.One block of equilateral right angle trigonometry ferrum is pasted in the exciting face being typically in chassis, and exciting sensor is pasted onto on equilateral of angle iron, makes excitation orientation and the angle at 45 °, chassis of vibrator.Since so, two vibrators just can encourage three directions of vehicle body.
In step (3), vibrator is installed along with on exciting stand together with support.Rotary stand supporting leg, makes the deflecting roller of stand land, and movable stand is below impacting point.The exciting angle of adjusting vibration exciter, makes the exciting rod of vibrator and the normal parallel in exciting face, then tightens the bolt of support both sides, exciting angle fixed.Rotary screw, raises vibrator, makes exciting rod top install stud and points to the center mounting hole of exciting sensor.Mobile vibrator stand, is arranged on exciting sensor on exciting rod.And rotary stand supporting leg, deflecting roller is departed from ground so that vibrator stand forms rigid contact with ground.
In above-mentioned steps, test equipment divides quinquepartite, computer, LMS, sensor, vibrator, power amplifier.LMS is the nucleus equipment of test system, is connected respectively at computer, sensor, power amplifier.Computer is used for controlling LMS program, arranges test relevant parameter.Sensor is divided into three parts, and one is 3-axis acceleration sensor, for test response signal；Two is vibrator sensor, is used for gathering pumping signal；Three is single-axis acceleration sensors, for observing the concordance of impacting point pumping signal.The effect of power amplifier is to be sent to, after the LMS pumping signal released being converted, the vibrator being attached thereto, then is sent final pumping signal by vibrator, encourages vehicle body.3-axis acceleration sensor needs to be bonded in test point, and generally measuring point number often wants excess sensor device number, and all of test point cannot have once been surveyed in explanation.This is accomplished by being pasted onto on different measuring points three axles in batches, tests one by one.Vibrator sensor is pasted onto on exciting face, and is connected with vibrator.Single-axis acceleration sensors needs to be attached near vibrator sensor, in order to the response signal of accurate acquisition point of excitation.
Claims (2)
- null1. an automobile mould measurement device and method，Including vibrator，It is characterized in that: vibrator be installed below exciter support，Vibrator both sides are provided with screwed hole，Vibrator is connected with exciter support by bolt，Rubber sheet gasket it is furnished with between bolt and exciter support，Exciter support both sides are the straight plate of isosceles trapezoid，Each side beat a through hole，Exciter support is arranged below upper supporting plate and two stand support plates of lower carrier plate，Upper supporting plate and lower carrier plate have four and eight through holes，The screw mandrel for lift platform upper supporting plate it is connected between upper supporting plate and lower carrier plate，The upper and lower two ends of screw mandrel and upper lower carrier plate weld together，Lifting support is welded on lower carrier plate，And traverse upper supporting plate through hole，Fixed by bolt and upper supporting plate，The left and right sides, lower section of lower carrier plate is each provided with an adjustable stand supporting leg，Four deflecting rollers it are uniformly distributed circumferentially bottom lower carrier plate，Deflecting roller adopts, with stand supporting leg, the structure cooperated，Deflecting roller base is welded on bottom lower carrier plate，Lower carrier plate is provided with four through holes and is welded with nut bottom it，Stand supporting leg is arranged on lower carrier plate by nut and through hole.
- 2. automobile mould measurement device and method according to claim 1, its vibrator stand using method is as follows:Step (1): after being arranged on stand by vibrator, moves to impacting point bottom by stand, it is determined that the direction of excitation of good vibrator, rotary stand supporting leg, and deflecting roller is departed from ground；Step (2): after vibrator stand integral position determines, adjusting vibration exciter exciting angle, make exciting rod parallel with the normal direction on impacting point surface；Step (3): rotating threaded shaft, adjusting vibration exciter rack levels, exciting rod is directed at impacting point, vibrator sensor is installed at exciting rod top, sensor is pasted onto on exciting face, vibrator stand overlap joint is complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610070317.1A CN105784302A (en) | 2016-02-02 | 2016-02-02 | Automobile modal testing apparatus and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610070317.1A CN105784302A (en) | 2016-02-02 | 2016-02-02 | Automobile modal testing apparatus and method |
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| CN105784302A true CN105784302A (en) | 2016-07-20 |
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| CN201610070317.1A Pending CN105784302A (en) | 2016-02-02 | 2016-02-02 | Automobile modal testing apparatus and method |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092479A (en) * | 2016-07-28 | 2016-11-09 | 西南交通大学 | Slab and girder load identification and the multi-function test stand of non-destructive tests |
| CN107024330A (en) * | 2017-03-23 | 2017-08-08 | 陕西科技大学 | A kind of mode experiment platform and its application method |
| CN107478444A (en) * | 2017-09-19 | 2017-12-15 | 北京汽车研究总院有限公司 | A kind of body mode exciting device |
| CN109000877A (en) * | 2018-05-25 | 2018-12-14 | 西北工业大学 | A kind of system excited by impact and the test macro based on system excited by impact |
| CN109099277A (en) * | 2018-11-06 | 2018-12-28 | 沈阳天眼智云信息科技有限公司 | A kind of movable type can the vibration excitor support stand that adjusts of multiple degrees of freedom |
| CN109211584A (en) * | 2018-08-30 | 2019-01-15 | 安徽江淮汽车集团股份有限公司 | A kind of steering wheel assembly vibration mechine |
| CN110441015A (en) * | 2019-07-19 | 2019-11-12 | 中国船舶重工集团公司第七一九研究所 | A kind of underwater exciting combination unit |
| CN110645458A (en) * | 2019-09-17 | 2020-01-03 | 常州大学 | Freely-liftable moving device for exciter |
| CN112710445A (en) * | 2020-12-17 | 2021-04-27 | 同济大学 | Simulation test bed of straddle type single-rail single-shaft bogie |
| CN112985730A (en) * | 2021-02-04 | 2021-06-18 | 无锡商业职业技术学院 | Multidimensional vibration test detection device for electromechanical equipment production |
| CN113606469A (en) * | 2021-08-11 | 2021-11-05 | 哈尔滨工程大学 | Vibration exciter working frame capable of realizing hemispherical excitation |
| CN113654749A (en) * | 2021-08-11 | 2021-11-16 | 哈尔滨工程大学 | Self-adaptive hydraulic vibration exciter mounting device |
| CN113653918A (en) * | 2021-08-11 | 2021-11-16 | 哈尔滨工程大学 | Hydraulic vibration exciter installation device |
| CN114543981A (en) * | 2022-02-28 | 2022-05-27 | 江南造船(集团)有限责任公司 | Application of epoxy gasket, vibration testing system of epoxy gasket and testing method |
| CN114923987A (en) * | 2022-05-30 | 2022-08-19 | 沈阳建筑大学 | Vehicle-mounted movable excitation device for steel rail modal test |
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| JPS6459135A (en) * | 1987-08-31 | 1989-03-06 | Ohbayashi Corp | Vibration reducer for excitation testing apparatus |
| CN201522366U (en) * | 2009-11-06 | 2010-07-07 | 襄樊达安汽车检测中心 | Automobile modal test sample installation platform |
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Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092479A (en) * | 2016-07-28 | 2016-11-09 | 西南交通大学 | Slab and girder load identification and the multi-function test stand of non-destructive tests |
| CN106092479B (en) * | 2016-07-28 | 2018-08-14 | 西南交通大学 | Slab and girder load identifies and the multi-function test stand of non-destructive tests |
| CN107024330A (en) * | 2017-03-23 | 2017-08-08 | 陕西科技大学 | A kind of mode experiment platform and its application method |
| CN107024330B (en) * | 2017-03-23 | 2020-07-28 | 陕西科技大学 | Modal experiment platform and using method thereof |
| CN107478444A (en) * | 2017-09-19 | 2017-12-15 | 北京汽车研究总院有限公司 | A kind of body mode exciting device |
| CN109000877A (en) * | 2018-05-25 | 2018-12-14 | 西北工业大学 | A kind of system excited by impact and the test macro based on system excited by impact |
| CN109211584A (en) * | 2018-08-30 | 2019-01-15 | 安徽江淮汽车集团股份有限公司 | A kind of steering wheel assembly vibration mechine |
| CN109211584B (en) * | 2018-08-30 | 2019-11-26 | 安徽江淮汽车集团股份有限公司 | A kind of steering wheel assembly vibration mechine |
| CN109099277A (en) * | 2018-11-06 | 2018-12-28 | 沈阳天眼智云信息科技有限公司 | A kind of movable type can the vibration excitor support stand that adjusts of multiple degrees of freedom |
| CN109099277B (en) * | 2018-11-06 | 2024-03-15 | 沈阳天眼智云信息科技有限公司 | Movable vibration exciter support rack capable of being adjusted in multiple degrees of freedom |
| CN110441015A (en) * | 2019-07-19 | 2019-11-12 | 中国船舶重工集团公司第七一九研究所 | A kind of underwater exciting combination unit |
| CN110645458A (en) * | 2019-09-17 | 2020-01-03 | 常州大学 | Freely-liftable moving device for exciter |
| CN112710445B (en) * | 2020-12-17 | 2022-08-23 | 同济大学 | Simulation test bed of straddle type single-rail single-shaft bogie |
| CN112710445A (en) * | 2020-12-17 | 2021-04-27 | 同济大学 | Simulation test bed of straddle type single-rail single-shaft bogie |
| CN112985730A (en) * | 2021-02-04 | 2021-06-18 | 无锡商业职业技术学院 | Multidimensional vibration test detection device for electromechanical equipment production |
| CN113606469A (en) * | 2021-08-11 | 2021-11-05 | 哈尔滨工程大学 | Vibration exciter working frame capable of realizing hemispherical excitation |
| CN113654749A (en) * | 2021-08-11 | 2021-11-16 | 哈尔滨工程大学 | Self-adaptive hydraulic vibration exciter mounting device |
| CN113653918A (en) * | 2021-08-11 | 2021-11-16 | 哈尔滨工程大学 | Hydraulic vibration exciter installation device |
| CN113654749B (en) * | 2021-08-11 | 2023-06-13 | 哈尔滨工程大学 | Self-adaptive hydraulic vibration exciter mounting device |
| CN113606469B (en) * | 2021-08-11 | 2024-05-10 | 哈尔滨工程大学 | Vibration exciter working frame capable of realizing hemispherical excitation |
| CN113653918B (en) * | 2021-08-11 | 2024-05-10 | 哈尔滨工程大学 | Hydraulic vibration exciter mounting device |
| CN114543981A (en) * | 2022-02-28 | 2022-05-27 | 江南造船(集团)有限责任公司 | Application of epoxy gasket, vibration testing system of epoxy gasket and testing method |
| CN114543981B (en) * | 2022-02-28 | 2023-09-12 | 江南造船(集团)有限责任公司 | Vibration testing system and method for epoxy gasket of marine equipment |
| CN114923987A (en) * | 2022-05-30 | 2022-08-19 | 沈阳建筑大学 | Vehicle-mounted movable excitation device for steel rail modal test |
| CN114923987B (en) * | 2022-05-30 | 2024-05-07 | 沈阳建筑大学 | Vehicle-mounted movable excitation device for steel rail modal test |
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Application publication date: 20160720 |
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