CN102853981A - Experimental device for simulating large-amplitude vibration system - Google Patents

Experimental device for simulating large-amplitude vibration system Download PDF

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Publication number
CN102853981A
CN102853981A CN2012103669121A CN201210366912A CN102853981A CN 102853981 A CN102853981 A CN 102853981A CN 2012103669121 A CN2012103669121 A CN 2012103669121A CN 201210366912 A CN201210366912 A CN 201210366912A CN 102853981 A CN102853981 A CN 102853981A
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displacement transducer
spring
fixed support
experimental provision
jockey
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CN2012103669121A
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CN102853981B (en
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曾晓辉
余杨
张良
申仲翰
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Institute of Mechanics of CAS
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Institute of Mechanics of CAS
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Abstract

The invention discloses an experimental device for simulating a large-amplitude vibration system. The device comprises a fixing support body structure, a horizontal vibration testing platform, a spring connection device, a loading system and a measurement device. The device is small in volume, simple to operate, convenient to use, install and disassemble, low in construction cost and usage expense and suitable to industries such as aviation, space flight, sea, communication, electron and cars.

Description

A kind of experimental provision of simulating the Large Amplitude Vibration system
Technical field
The present invention relates to a kind of device of experimental simulation, relate in particular to a kind of experimental provision of simulating the Large Amplitude Vibration system.
Background technology
Often meet in the engineering problem such as moving component of Large Amplitude Vibration system in oceanographic engineering floating structure, Aero-Space, machinery and instrument and meter.No matter be to optimize existing system, still carry out innovation research and design, all need carry out experimental simulation.For instance, be accompanied by going deep into of ocean development process, the marine floating type works begins to obtain more application.For guaranteeing that the marine floating type works has good applicability and security, generally all it is carried out the vibration experiment with larger motion amplitude, present this experimental simulation carries out in the oceanographic engineering pond usually.Yet this experiment pond quantity is few, and experiment and measurement expense costliness, therefore is usually used in the comparative tests that engineering design plan (EDP) is tentatively determined the replication experiment in the situation or clearer and more definite theoretical prediction result is arranged on a small quantity.Also above-mentioned analogue can occur in Other Engineering and research field, this just is not easy to find by experiment at any time new phenomenon in exploratory R﹠D process, carry out original reason experiment.
For this reason, in the urgent need to inventing a kind of general convenience, with low cost, can simulate and outside any given, carry the experimental provision that carries out large amplitude motion-promotion force system under the effect.
Summary of the invention
The present invention is directed to the problem that lacks at present the experimental simulation device that is applicable to Large Amplitude Vibration system and simple universal, a kind of experimental provision of simulating the Large Amplitude Vibration system is proposed, to realize externally experimental simulation and the measurement of large amplitude motion response under the load of Engineering Vibration system.
In order to address the above problem, the invention provides a kind of experimental provision of simulating the Large Amplitude Vibration system, comprising: fixed support agent structure, horizontal vibration testing table, spring connector, loading system and measuring equipment; Wherein,
Described horizontal vibration testing table is positioned at the centre position on the described fixed support agent structure, comprise bracing or strutting arrangement, horizontal sliding table and shaking table ox head, described bracing or strutting arrangement is positioned on the described fixed support agent structure, described horizontal sliding table is suspended on the described bracing or strutting arrangement, described shaking table ox head links to each other with an end of described horizontal sliding table, and links to each other with described loading system;
Described spring connector comprises spring link fixed support, fine setting screw rod jockey, screw rod, spring and spring rebound clip tool; Described spring link fixed support has four, be installed in respectively four jiaos of described fixed support agent structure, fine setting screw rod jockey is installed on the described spring link fixed support, on the described fine setting screw rod jockey screw rod is installed, one end of described spring links to each other with described screw rod, the other end links to each other with described spring rebound clip tool, and described spring rebound clip tool is installed on the described horizontal sliding table;
Described loading system comprises charger and charger base, and described charger base is positioned on the described fixed support agent structure, and described charger is positioned on the described charger base, links to each other with described shaking table ox head;
Described measuring equipment links to each other with described horizontal sliding table, is used for the experimental datas such as ergometry, acceleration, displacement.
Preferably, above-mentioned experimental provision also has following characteristics:
Described measuring equipment comprises: the card extender of power sensor and power sensor and slide unit ox head, described power sensor link to each other with described shaking table ox head by described card extender between described shaking table ox head and charger.
Preferably, above-mentioned experimental provision also has following characteristics:
Described measuring equipment also comprises: 2 acceleration transducers all are positioned on the described horizontal sliding table.
Preferably, above-mentioned experimental provision also has following characteristics:
Described measuring equipment also comprises: displacement transducer, displacement transducer locating support, displacement transducer web member, displacement transducer adapter and adjustable displacement transducer jockey, wherein, described displacement transducer locating support is positioned on the described fixed support agent structure, one end of described displacement transducer is installed on the described displacement transducer locating support by described displacement transducer web member, and the other end of described displacement transducer is connected on the described adjustable displacement transducer jockey by described displacement transducer adapter; Described adjustable displacement transducer jockey is installed on the described spring rebound clip tool, has slotted hole at described spring rebound clip tool, and described adjustable displacement transducer jockey can slide in the above, and then realizes leveling and centering.
Preferably, above-mentioned experimental provision also has following characteristics:
The fixed support agent structure is formed by two vertical channel-section steels and three beam weldings, and two crossbeams in described three sections crossbeams are used for installing described charger base, and an other crossbeam is used for installing described displacement transducer locating support.
Preferably, above-mentioned experimental provision also has following characteristics:
Be provided with equidistant screw on described vertical channel-section steel, be used for described spring link fixed support is installed, also be convenient to whole equipment in and leveling.
Preferably, above-mentioned experimental provision also has following characteristics:
Be provided with the equidistant screw of multirow on the described charger base, so that the charger of different ranges uses, also be applicable to the installation of different length, rigid spring simultaneously.
The present invention has following advantage:
(1) this experimental provision is by parts such as custom-designed adjustable load and fixed frame, multiple clamping apparatus, special connecting pieces, and link to each other with horizontal sliding table by spring, so that originally only be as providing the horizontal sliding table of vibration environment to become one of underproof object to study subject, thereby can simulate under any given external load effect, carry out the dynamic response of amplitude kinematic system with different frequency, various amplitude.
(2) this experimental provision has overcome the deficiency that the horizontal vibration testing table lacks self rigidity.Utilize four extension springs that are connected with horizontal sliding table to increase self rigidity for the horizontal vibration testing table; Four springs link to each other with support by screw rod, and the spring hitch point is adjustable at any time, to guarantee each spring tension equal and opposite in direction.All keep under the extended state at each spring, horizontal sliding table can be done the to-and-fro movement than large amplitude.This experimental provision is easy, easy on adjusting rigidity, only needs can reach the purpose of change rigidity by changing the spring of different-stiffness.
(3) use this experimental provision after, horizontal vibration test can strictly be satisfied under the principle of similitude at master mould and empirical model and tests.Except the platform stiffness tuning mode described in (2), horizontal sliding table weight can be regulated at any time by increasing mass.The platform structure damping can significantly be regulated with pre-elongation by regulating four spring horizontals and vertical position, and then utilizes four cushion blocks of horizontal sliding table both sides to finely tune.
(4) charger can be changed according to the experiment needs, and experimental provision can be simulated under any given external load effect, does the Engineering Vibration system of Large Amplitude Motion with different frequency, various amplitude.For the height of different chargers and the difference on the width, we can utilize on base and the support various chutes and screw rod with charger, horizontal spring and vibration table three centering and be adjusted to level.
(5) this experimental provision small, be easy to dismounting, be convenient to reequip flexibly according to difference research needs.On the device with displacement transducer, power sensor and acceleration transducer, for some performance in the large amplitude motion-promotion force system be optimized, when assessing, this covering device than the traditional analog device be easier to the operation.
(6) experimental provision mainly is as raw material take standard channel-section steel and steel plate.On the experimental provision cost, this experimental provision is well below traditional large amplitude sport simulated system (such as the oceanographic engineering pond), and the operating cost of experiment is compared also quite cheap with it.
Description of drawings
Fig. 1 is the side view of experimental provision of the simulated Large Amplitude Vibration system of the embodiment of the invention;
Fig. 2 is the vertical view of experimental provision of the simulated Large Amplitude Vibration system of the embodiment of the invention;
Wherein:
1-fine setting screw rod jockey, 2-fixed support agent structure, 3-charger base, 4-shaking table ox head, 5-slide unit location briquetting, 6-spring rebound clip tool, 7-bracing or strutting arrangement, 8-spring link fixed support, 9-screw rod, 10-displacement transducer, 11-acceleration transducer, 12-displacement transducer locating support, 13-power sensor, 14-charger, 15-horizontal sliding table, 16-spring, 17-vertically channel-section steels, 18-crossbeam, screw on 19-vertically channel-section steels, the card extender of 20-power sensor and slide unit ox head, 21-displacement transducer web member, 22-displacement transducer adapter, 23-adjustable displacement transducer jockey.
Embodiment
Hereinafter in connection with accompanying drawing embodiments of the invention are elaborated.Need to prove that in the situation of not conflicting, the embodiment among the application and the feature among the embodiment be combination in any mutually.
Experimental provision of the present invention comprises the parts such as custom-designed adjustable load and fixed frame, multiple clamping apparatus, special connecting piece, and links to each other with horizontal sliding table by spring.Above-mentioned various assemblies and horizontal sliding table are carried out flexible combination, just form a kind of general experimental provision of simulating amplitude motion-promotion force system.
If experimental provision will be realized the simulation of large amplitude motion-promotion force system and need to satisfy following 5 points: one, horizontal sliding table is bearing the to-and-fro movement that can carry out under the effect of carrying outside any given than large amplitude; Two, increase horizontal rigidity for horizontal sliding table and the rigidity size can be regulated; Three, the damping of slide unit can be regulated in a big way; Four, the variable mass of horizontal sliding table; Five, this device can ergometry, the key mechanics parameter such as acceleration, displacement.More than this some all can finish by this experimental provision.
As shown in Figure 1, experimental provision of the present invention comprises: fixed support agent structure 2, horizontal vibration testing table, spring connector, loading system and measuring equipment; Wherein:
Described horizontal vibration testing table is positioned at the centre position on the described fixed support agent structure 2, comprise slide unit location briquetting 5, bracing or strutting arrangement 7, horizontal sliding table 15 and shaking table ox head 4, described bracing or strutting arrangement 7 is positioned on the described fixed support agent structure 2, described slide unit location briquetting 5 is used for pushing down four legs of bracing or strutting arrangement, described horizontal sliding table 15 is suspended on the described bracing or strutting arrangement 7, described shaking table ox head 4 links to each other with an end of described horizontal sliding table 15, and links to each other with described loading system.
The horizontal vibration testing table is generally used for finding initial failure, simulation electrician, electronics, auto parts and components and other relate to product and the environment of goods in transportation of transportation, detect intensity and the fatigue strength of structure under the vibration-resistant property of its product or the examination actual condition, and test findings is more accurate, and is with a high credibility.Horizontal sliding table 15 in the horizontal vibration testing table is generally the hydronalium that density is little, quality is light.By galvanomagnetic effect or oil pressure horizontal sliding table 15 is suspended on the bracing or strutting arrangement 7, in the present embodiment, this bracing or strutting arrangement 7 is the shaking table fuel tank.
Described spring connector comprises spring link fixed support 8, fine setting screw rod jockey 1, screw rod 9, spring 16 and spring rebound clip tool 6; Described spring link fixed support 8 has four, be installed in respectively four jiaos of described fixed support agent structure 2, fine setting screw rod jockey 1 is installed on the described spring link fixed support 8, on the described fine setting screw rod jockey 1 screw rod 9 is installed, one end of described spring 16 links to each other with described screw rod 9, the other end links to each other with described spring rebound clip tool 6, and described spring rebound clip tool 6 is installed on the described horizontal sliding table 15; Have vertical hole slot on the spring link fixed support 8, so just can by to the vertically delicate adjusting of fine setting screw rod jockey 1 to guarantee the level of spring 16; The screw rod 9 of installing in the horizontal direction utilizes the adjusting of its length spacing with the control spring hanging point.
Described loading system comprises charger 14 and charger base 3, and described charger base 3 is positioned on the described fixed support agent structure 2, and described charger 14 is positioned on the described charger base 3, links to each other with described shaking table ox head 4; Be provided with the equidistant screw (not shown) of multirow on the described charger base 3, so that the charger of different ranges 14 uses.
Described measuring equipment links to each other with described horizontal sliding table, be used for the experimental datas such as ergometry, acceleration, displacement, comprise: the card extender 20 of power sensor 13, power sensor and slide unit ox head, acceleration transducer 11, displacement transducer 10, displacement transducer locating support 12, displacement transducer web member 21, displacement transducer adapter 22 and adjustable displacement transducer jockey 23, wherein, described power sensor 13 links to each other with described shaking table ox head 4 by described card extender 20 between described shaking table ox head 4 and charger 14; Described acceleration transducer 11 has two, all is positioned on the described horizontal sliding table 15.Described displacement transducer locating support 12 is positioned on the described fixed support agent structure 2, one end of described displacement transducer 10 is installed on the described displacement transducer locating support 12 by described displacement transducer web member 21, and the other end of described displacement transducer 10 is connected on the described adjustable displacement transducer jockey 23 by described displacement transducer adapter 22; Described adjustable displacement transducer jockey 23 is installed on the described spring rebound clip tool 6, has slotted hole at described spring rebound clip tool 6, and described adjustable displacement transducer jockey 23 can slide in the above, and then realizes leveling and centering.
Fixed support agent structure 2 is welded by two vertical channel-section steels 17 and three crossbeams 18, and material can adopt standard channel-section steel (12.6).Article two, vertical channel-section steel hits exactly and lays the horizontal vibration testing table, is provided with equidistant screw 19 at vertical channel-section steel 17, is used for installing described spring link fixed support 8.These screws can be used for regulating the position of four spring link fixed supports 8, make the spacing between spring 16 and screw rod 9 hitch points satisfy the appointment elongation, to satisfy slide unit vibration amplitude area requirement.Two crossbeams that vertical 17 in channel-section steel is welded with in 18, three crossbeams 18 of three crossbeams are used for installing described charger base 3, and an other crossbeam is used for installing described displacement transducer locating support 12.
When this experimental provision is produced, the channel-section steel that first-selected intensity is higher and steel plate also guarantee that rear each surface evenness of welding is higher, the machining precision of a whole set of all accessories of experimental provision all will reach more than the 0.5mm, and the screwhole position of beating will guarantee the high precision of 0.1mm on the device.
Experimental provision is installed before with the central authorities of horizontal vibration test-bed at two vertical channel-section steels 17 of load of fixed support agent structure 2.At first, according to the corresponding hanging point spacing of spring 16 rigidity four spring link fixed supports 8 and fine setting screw rod jockey 1 are installed; Then, screw rod 9 is fixed on the fine setting screw rod jockey 1, the spring rebound clip tool 6 on the horizontal sliding table 15 is tightly lived with horizontal sliding table 15 usefulness screws; At last, four springs 16 hang up horizontal sliding table 15, by the fine setting to screw rod 9 on screw in the slotted hole groove and the fine setting screw rod jockey 1, make on the horizontal sliding table 15 that four hanging points are up to the standard respectively on four hanging points and the spring link fixed support 8, plane, spring link fixed support 8 hanging point place must be able to not be lower than plane, horizontal sliding table 15 hanging point place.Again charger 14 is fixed on the charger base 3 behind the platform erection, and adjusts charger base 3 and highly make charger 14 and shaking table ox head 4 centerings, guarantee the power load signal continuously, stable.
Preferably four sensors are all linked to each other with signal receiver during experimental provision work, can obtain comparatively ideal experimental result by the analysis-by-synthesis to force signal, displacement signal and acceleration signal.When the platform structure damping is undesirable, can reach the by a relatively large margin effect of change structure damping to the poor adjusting of hanging point elevation of water on hanging point on the horizontal sliding table 15 and the spring link fixed support 8, also can change by the fine setting screw rod the pre-elongation of four springs, reach the effect than the damping of amplitude change structure.In addition, in a preferred embodiment, the below of horizontal sliding table both sides is equipped with four cushion blocks, by the tightness degree of fine setting cushion block and horizontal sliding table, and then the size of the frictional strength of adjustment cushion block and bracing or strutting arrangement 7, to reach the purpose of increase and decrease damping.
In sum, this experimental provision can be simulated under any given external load effect, does the Engineering Vibration system of Large Amplitude Motion with different frequency, various amplitude.This experimental provision is easy to dismounting, is convenient to according to difference research needs flexible.Sensors in the cooperation, this device can be realized experimental simulation and the measurement of large amplitude motion response under unexpected section in office of the Engineering Vibration system load, are applicable to Aeronautics and Astronautics, ocean, communication, electronics, automobile and other industries.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (7)

1. the experimental provision that can simulate the Large Amplitude Vibration system is characterized in that, comprising: fixed support agent structure, horizontal vibration testing table, spring connector, loading system and measuring equipment; Wherein,
Described horizontal vibration testing table is positioned at the centre position on the described fixed support agent structure, comprise bracing or strutting arrangement, horizontal sliding table and shaking table ox head, described bracing or strutting arrangement is positioned on the described fixed support agent structure, described horizontal sliding table is suspended on the described bracing or strutting arrangement, described shaking table ox head links to each other with an end of described horizontal sliding table, and links to each other with described loading system;
Described spring connector comprises spring link fixed support, fine setting screw rod jockey, screw rod, spring and spring rebound clip tool; Described spring link fixed support has four, be installed in respectively four jiaos of described fixed support agent structure, fine setting screw rod jockey is installed on the described spring link fixed support, on the described fine setting screw rod jockey screw rod is installed, one end of described spring links to each other with described screw rod, the other end links to each other with described spring rebound clip tool, and described spring rebound clip tool is installed on the described horizontal sliding table;
Described loading system comprises charger and charger base, and described charger base is positioned on the described fixed support agent structure, and described charger is positioned on the described charger base, links to each other with described shaking table ox head;
Described measuring equipment links to each other with described horizontal sliding table, is used for the experimental datas such as ergometry, acceleration, displacement.
2. experimental provision as claimed in claim 1 is characterized in that,
Described measuring equipment comprises: the card extender of power sensor and power sensor and slide unit ox head, described power sensor link to each other with described shaking table ox head by described card extender between described shaking table ox head and charger.
3. experimental provision as claimed in claim 2 is characterized in that,
Described measuring equipment also comprises: 2 acceleration transducers all are positioned on the described horizontal sliding table.
4. experimental provision as claimed in claim 3 is characterized in that,
Described measuring equipment also comprises: displacement transducer, displacement transducer locating support, displacement transducer web member, displacement transducer adapter and adjustable displacement transducer jockey, wherein, described displacement transducer locating support is positioned on the described fixed support agent structure, one end of described displacement transducer is installed on the described displacement transducer locating support by described displacement transducer web member, and the other end of described displacement transducer is connected on the described adjustable displacement transducer jockey by described displacement transducer adapter; Described adjustable displacement transducer jockey is installed on the described spring rebound clip tool, has slotted hole at described spring rebound clip tool, and described adjustable displacement transducer jockey can slide in the above, and then realizes leveling and centering.
5. experimental provision as claimed in claim 1 is characterized in that,
The fixed support agent structure is formed by two vertical channel-section steels and three beam weldings, and two crossbeams in described three sections crossbeams are used for installing described charger base, and an other crossbeam is used for installing described displacement transducer locating support.
6. experimental provision as claimed in claim 5 is characterized in that,
Be provided with equidistant screw on described vertical channel-section steel, be used for described spring link fixed support is installed, also be convenient to whole equipment in and leveling.
7. experimental provision as claimed in claim 1 is characterized in that,
Be provided with the equidistant screw of multirow on the described charger base, so that the charger of different ranges uses, also be applicable to the installation of different length, rigid spring simultaneously.
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CN103234726A (en) * 2013-05-07 2013-08-07 清华大学 High gravity field vibration adding device for huge marine centrifugal machine
CN103454054A (en) * 2013-08-07 2013-12-18 中国科学院力学研究所 Force control loading and layout variable vertical vibration experimental device
CN103743535A (en) * 2013-12-16 2014-04-23 中国科学院力学研究所 Large-amplitude translation/rotation-coupled vibration experiment device loaded under the control of force and torque
CN104748930A (en) * 2015-04-13 2015-07-01 东北大学 Piezoelectric high-frequency vibration system used for high-order vibration fatigue testing of small-size components
CN105241627A (en) * 2015-10-27 2016-01-13 上海航天精密机械研究所 Horizontal pressure balance auxiliary support device for vibration test
CN105300642A (en) * 2014-07-29 2016-02-03 中国航空工业集团公司沈阳发动机设计研究所 Shafting impact vibration simulation tester
CN105606324A (en) * 2016-03-15 2016-05-25 上海交通大学 Vibration testing system based on vibration loading device, and method thereof
CN107300453A (en) * 2017-06-30 2017-10-27 中国科学院长春光学精密机械与物理研究所 A kind of satellite platform horizontal direction Dynamic Simulation device
CN110930832A (en) * 2019-12-11 2020-03-27 中国矿业大学 Free vibration experimental device

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CN103234726B (en) * 2013-05-07 2015-10-28 清华大学 Super gravity field for giant maritime work centrifugal machine adds shake device
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CN103454054B (en) * 2013-08-07 2016-01-13 中国科学院力学研究所 The vertical vibration experimental device of a kind of power controlled loading, variable layout
CN103454054A (en) * 2013-08-07 2013-12-18 中国科学院力学研究所 Force control loading and layout variable vertical vibration experimental device
CN103743535A (en) * 2013-12-16 2014-04-23 中国科学院力学研究所 Large-amplitude translation/rotation-coupled vibration experiment device loaded under the control of force and torque
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CN105241627A (en) * 2015-10-27 2016-01-13 上海航天精密机械研究所 Horizontal pressure balance auxiliary support device for vibration test
CN105241627B (en) * 2015-10-27 2019-01-25 上海航天精密机械研究所 A kind of vibration test horizontal direction pressure balance auxiliary support apparatus
CN105606324A (en) * 2016-03-15 2016-05-25 上海交通大学 Vibration testing system based on vibration loading device, and method thereof
CN107300453A (en) * 2017-06-30 2017-10-27 中国科学院长春光学精密机械与物理研究所 A kind of satellite platform horizontal direction Dynamic Simulation device
CN107300453B (en) * 2017-06-30 2019-07-19 中国科学院长春光学精密机械与物理研究所 A kind of satellite platform horizontal direction Dynamic Simulation device
CN110930832A (en) * 2019-12-11 2020-03-27 中国矿业大学 Free vibration experimental device

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