CN100408993C - Simulated test platform system for mechanical structure vibration resistant performance - Google Patents
Simulated test platform system for mechanical structure vibration resistant performance Download PDFInfo
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- CN100408993C CN100408993C CNB200410025840XA CN200410025840A CN100408993C CN 100408993 C CN100408993 C CN 100408993C CN B200410025840X A CNB200410025840X A CN B200410025840XA CN 200410025840 A CN200410025840 A CN 200410025840A CN 100408993 C CN100408993 C CN 100408993C
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Abstract
The present invention relates to a simulation test platform system for the vibration resistance of mechanical structure. The present invention is characterized in that a support mechanism of a table top is composed of four air spring support mechanisms which are distributed at the circumference of a lower table top. An excitation mechanism is formed by the connection of four rotary oil cylinders and hydraulic control one-way valves. Each rotary oil cylinder is communicated with one hydraulic control one-way valve. The other end of the hydraulic control one-way valve is connected with a hydraulic controller. The piston of the rotary oil cylinder is an eccentric mass. Hydraulic oil inputted through the hydraulic controller changes the displacement of the eccentric mass so that the vibration amplitude of the vibration table top is changed. The four rotary oil cylinders are connected with a transmission apparatus through a flexible shaft connector. The transmission apparatus drives the four rotary oil cylinders to rotate in a preset direction. Centrifugal force generated when the eccentric masses of the rotary oil cylinders rotate is synthesized according to preset phases in the vibration direction, and forms excitation force changing in sinusoidal rules. The vibration direction can be switched in the vertical direction or the horizontal direction by changing the relative position of the piston.
Description
Technical field:
The present invention relates to a kind of simulation testing platform system, particularly mechanical structure resistance to shock simulation testing platform system.
Background technology:
Product carries out the test of various vibration simulations by l-G simulation test, the vibration test requirement when satisfying product export.Vibration test is that producer guarantees an important job of product quality, relates generally to following parameter testing: the frequency of vibration, vibration displacement, speed, acceleration etc.The mechanical setting means of the many employings of existing vibration rig as in the vibration l-G simulation test, when being set at vertical vibration or horizontal vibration mechanically, and when vibration parameters need be revised, all need be readjusted, and sets vibration frequency or vibratory output.In the single test this process need repeatedly, different parameters test all needs to adjust, therefore, once complete test need take a long time.Existing vibration rig linear properties is relatively poor simultaneously, and there is bigger distortion in test, influences the result of l-G simulation test.Adopted the equipment of the vibration test that the electric control mode regulates to occur though also have in recent years, the convenience of its performance, adjusting still can't reach satisfactory effect.
Summary of the invention:
The purpose of this invention is to provide a kind of mechanical structure resistance to shock mechanical structure resistance to shock simulation testing platform system, so that in the l-G simulation test process, not needing that simulation test platform is carried out too much machinery sets, the purpose of just can quick and convenient input any parameter test is finished the measurement of important parameters such as vibration table frequency, displacement, speed, acceleration and degree of distortion.
The object of the present invention is achieved like this, mechanical structure resistance to shock simulation testing platform system, it is made up of table top, base, mesa supports mechanism, guiding mechanism, exciting agency, gearing, hydraulic control device, between table top and the base by the mesa supports mechanism supports, and fix by guiding mechanism, it is characterized in that: mesa supports mechanism is made up of four air spring supporting mechanisms, and four air spring supporting mechanisms are distributed in around the following table; Exciting agency is connected to form by four angling cylinders, hydraulic control one-way valves, each angling cylinder is communicated with a hydraulic control one-way valve respectively, the hydraulic control one-way valve other end is connected with hydraulic control device, the piston of angling cylinder is an eccentric mass, changes the displacement of eccentric mass by the hydraulic oil of hydraulic control device input; Thereby change the vibration amplitude of vibration table; Four angling cylinders are connected with gearing by flexible clutch; Drive four angling cylinders by gearing and press the direction initialization rotation, the centrifugal force that produces during the rotation of angling cylinder eccentric mass is synthetic by setting phase place on direction of vibration, form the exciting force that sinusoidal rule changes, the relative position that changes piston can make direction of vibration change in horizontal or vertical direction.
Described air spring supporting mechanism is connected and composed by rubber air spring, air air drum, orifice restriction device, tracheae, the air air drum is " I-shaped " shape, have around the air spring that the top cylinder of air air drum is fixing, work top in four positioning pistons are placed in the air spring; There is the orifice restriction device at air air drum middle part, and air air drum bottom tube arm has tracheae, and four air air drums link to each other with tracheae.On one of them air air drum valve cock is housed, the air air drum raises by make rubber air spring internal pressure to gas, can shaking table be remained on the specified altitude by regulating the air inflow in the air drum.
Characteristics of the present invention are: because table top is supported by the air spring supporting mechanism, form no forced guidance inertia-powered system, be typical single-degree of freedom vibration system, the natural frequency of this system is lower than frequency of operation, so be in super resonance duty during shaking table work.Air spring has good vibration isolation effect in addition, does not therefore need foundation special.And exciting agency changes the displacement of eccentric mass by the forming of the piston oil-cylinder of four eccentric mass by the hydraulic oil of hydraulic control device input; Thereby change the vibration amplitude of vibration table; Four angling cylinders are connected with gearing by flexible clutch; Drive four angling cylinders by gearing and press the direction initialization rotation, can form horizontal or vertical vibration.
The invention will be further described below in conjunction with the embodiment accompanying drawing:
Description of drawings:
Fig. 1 is an embodiment of the invention transmission structures synoptic diagram;
Fig. 2 is embodiment of the invention hydraulic control device and exciting agency structural representation;
Fig. 3 is an embodiment of the invention air spring supporting mechanism structural representation;
Fig. 4 is an embodiment of the invention guiding mechanism structural representation.
Among the figure, 1, exciting agency; 2, angling cylinder; 3, flexible clutch; 4, axle one; 5, axle two; 6, handwheel one; 7, handwheel two; 8, V-belt; 9, motor; 10, variator; 11, axle three; 12, handwheel three; 13, axle four; 14, throttling valve; 15, two-position four-way valve; 16, three position four-way electromagnetic valve; 17,5-linked synchronized cylinder; 18, retaining valve; 19, hydraulic control one-way valve; 20, table top; 21, base; 22, oil pipe; 23, plunger case; 24, rubber air spring; 25, positioning piston; 26, air air drum; 27, orifice restriction device; 28, valve cock; 29, vent valve; 30, boss; 31, tracheae; 32, driving shaft.
Embodiment:
As shown in Figure 1, four angling cylinders 2 are connected with gearing by four flexible clutchs 3; Being connected axle 1 and handwheel 1 on the flexible clutch 3, axle 25 and handwheel 27, spools 4 13 is connected by wheel box 10 with driving shaft 32 with handwheel three, spools 4 13; Control hand wheel one, handwheel two, handwheel three can be set the initial bit phase of four angling cylinders 2, when motor 9 drives driving shaft 32 by V-belt 8, the eccentric mass rotation of angling cylinder 2 produces centrifugal force, at this moment phase place is synthetic to form the exciting force that sinusoidal rule changes by setting on direction of vibration, makes table top 20 and the trial target that is installed on the table top 20 produces vibration by the direction of determining.Setting phase place can make the direction of vibration of table top 20 with vertical, horizontal direction vibration.
As shown in Figure 2, angling cylinder 2 respectively by hydraulic control one-way valve 19 by being connected with 5-linked synchronized cylinder 17 oil circuits that five plunger cases 23 are formed, wherein four of 5-linked synchronized cylinder 17 plunger cases 23 and hydraulic control one-way valve 19 be connected to form four closed circuit, a plunger case 23 connects three position four-way electromagnetic valves 16.Hydraulic control one-way valve 19 is the operation valve of the turnover oil of angling cylinder 2.Two-position four-way valve 15 is solenoid directional control valves; It also is connected to the hydraulic control one-way valve 19 of four plunger case 23 front ends simultaneously, two-position four-way valve 15 actions, and oil pipe 22 enters pressure oil, and hydraulic control one-way valve 19 is opened.Postpone after three seconds three position four-way electromagnetic valve 16 actions.Piston in the middle of the 5-linked synchronized cylinder 17 moves upward, and angling cylinder 2 is emitted equal-volume hydraulic oil respectively by oil pipe 22.Offset piston is synchronous, and to deviating from the motion of rotation center direction, unbalanced moments increases, and displacement amplitude also increases thereupon.When reaching needed displacement amplitude.Two-position four-way valve 15 and three position four-way electromagnetic valve 16 reset to zeros.Hydraulically-controlled one-way valve 19 is closed, 17 stop motions of 5-linked synchronized cylinder.It is motionless that piston is fixed on desired location, and then displacement is stablized constant.
As shown in Figure 3, mesa supports mechanism is made up of four air springs, four air springs are distributed in around the table top 20, each air spring is by rubber air spring 24, air air drum 26, orifice restriction device 27, tracheae 31, vent valve 29 is formed, air air drum 26 is " I-shaped " shape, the positioning piston 25 of the air spring supporting table that the top cylinder of air air drum 26 is fixing, there is orifice restriction device 27 at air air drum 26 middle parts, air air drum 26 bottom barrels have tracheae 31, four air air drum 26 usefulness tracheaes 31 are interconnected, on one of them air air drum valve cock 28 is housed, air air drum 26 is squeezed into air in the air air drum 26 by common tracheae or small air pump, rubber air spring 24 internal pressures are raise, can vibration table 20 be remained on the specified altitude by regulating the air inflow in the air air drum 26.
As shown in Figure 4, four positioning pistons 25 in guiding mechanism involving vibrations table top 20 bottoms are placed on the air spring 24.Air spring 24 surrounds four positioning pistons 25 of vibration table 20 ringwise, and there is a boss 30 at the center of air spring 24, boss 30 cooperates with the center pit of positioning piston 25, air spring 24 anti-vibration performances are good, and vibration table 20 is during by vibration, not can to around exert an influence.
The present invention can be led to the sensor that is fixed on the table top and be converted vibration signal to electric signal and deliver to control computation unit, through data processing, realizes the measurement to important parameters such as shaking table frequency, displacement, speed, acceleration and degree of distortion, shows vibrational waveform.And can carry out spectrum analysis as required, system has good extendability, can control, measure two mechanical vibration generator systems simultaneously or monitor a collision stage, shock testing machine simultaneously according to user's requirement.There are good control accuracy and reliability in system, and simple to operate, directly perceived, is beneficial to realize testing laboratory's central management.
Claims (5)
1. mechanical structure resistance to shock simulation testing platform system, it is made up of table top, base, mesa supports mechanism, guiding mechanism, exciting agency, gearing, hydraulic control device, between table top and the base by the mesa supports mechanism supports, and fix by guiding mechanism, it is characterized in that: mesa supports mechanism is made up of four air spring supporting mechanisms, and four air spring supporting mechanisms are distributed in around the following table; Exciting agency is connected to form by four angling cylinders, hydraulic control one-way valves, each angling cylinder is communicated with a hydraulic control one-way valve respectively, the hydraulic control one-way valve other end is connected with hydraulic control device, the piston of angling cylinder is an eccentric mass, changes the displacement of eccentric mass by the hydraulic oil of hydraulic control device input; Thereby change the vibration amplitude of vibration table; Four angling cylinders are connected with gearing by flexible clutch; Drive four angling cylinders by gearing and press the direction initialization rotation, the centrifugal force that produces during the rotation of angling cylinder eccentric mass is synthetic by setting phase place on direction of vibration, form the exciting force that sinusoidal rule changes, the relative position that changes piston can make direction of vibration change in horizontal or vertical direction.
2. according to claim 1 mechanical structure resistance to shock mechanical structure resistance to shock simulation testing platform system, it is characterized in that: described air spring supporting mechanism is connected and composed by rubber air spring, air air drum, orifice restriction device, tracheae, the air air drum is " I-shaped " shape, the top cylinder of air air drum is fixed with air spring, has four positioning pistons to be placed in the air spring around the work top; There is the orifice restriction device at air air drum middle part, and air air drum bottom tube arm has tracheae, and four air air drums link to each other with tracheae.
3. according to claim 2 mechanical structure resistance to shock mechanical structure resistance to shock simulation testing platform system, it is characterized in that: valve cock (28) is housed on one of them air air drum.
4. according to claim 1 mechanical structure resistance to shock mechanical structure resistance to shock simulation testing platform system, it is characterized in that: described table top (20) four positioning pistons in bottom (25) are placed on the air spring (24).
5. according to claim 1 mechanical structure resistance to shock mechanical structure resistance to shock simulation testing platform system, it is characterized in that: there is a boss (30) at the center of air spring (24), and boss (30) cooperates with the center pit of positioning piston (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410025840XA CN100408993C (en) | 2004-02-02 | 2004-02-02 | Simulated test platform system for mechanical structure vibration resistant performance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410025840XA CN100408993C (en) | 2004-02-02 | 2004-02-02 | Simulated test platform system for mechanical structure vibration resistant performance |
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| CN1651892A CN1651892A (en) | 2005-08-10 |
| CN100408993C true CN100408993C (en) | 2008-08-06 |
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| CNB200410025840XA Expired - Fee Related CN100408993C (en) | 2004-02-02 | 2004-02-02 | Simulated test platform system for mechanical structure vibration resistant performance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013134921A1 (en) * | 2012-03-13 | 2013-09-19 | 青岛四方车辆研究所有限公司 | Air charging and discharging control device for air spring support system |
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| CN101750201B (en) * | 2008-12-09 | 2014-10-08 | 国际计测器株式会社 | Vibration testing device |
| CN101587008B (en) * | 2009-07-20 | 2011-03-16 | 中国航空工业第一集团公司北京长城计量测试技术研究所 | Vibration enhanced device of electric vibration table |
| CN101912823B (en) * | 2010-08-02 | 2011-12-21 | 浙江大学 | Vibrating table for centrifugal machine |
| CN102109406B (en) * | 2011-01-06 | 2012-02-08 | 山东力诺新材料有限公司 | Vibration test method for heat-collecting tube |
| CN102179784B (en) * | 2011-04-28 | 2014-04-23 | 吉林大学 | Multi-point floating-type flexible support device |
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| CN104776066B (en) * | 2015-04-22 | 2016-09-07 | 三峡大学 | A kind of hydraulic system of flexible member vibration experiment table |
| CN105716817A (en) * | 2016-02-02 | 2016-06-29 | 北京苏试创博环境可靠性技术有限公司 | Transmission device of mechanical structure anti-vibration performance simulation test platform |
| CN105716818A (en) * | 2016-02-02 | 2016-06-29 | 北京苏试创博环境可靠性技术有限公司 | Vibration exciter for mechanical structure anti-shock performance simulation experiment platform |
| CN105651505B (en) * | 2016-03-15 | 2018-03-06 | 湖州新天外绿包印刷有限公司 | Reel elasticity verifying attachment and its method for inspection |
| CN108444849A (en) * | 2018-03-08 | 2018-08-24 | 西南交通大学 | Synchrotron radiation vacuum/high pressure width-adjustable in situ fatigue test machine and its component |
| CN109269750B (en) * | 2018-11-22 | 2024-03-12 | 苏州苏试试验集团股份有限公司 | Vibration test piece suspension installation device capable of being switched horizontally and vertically |
| CN110806298B (en) * | 2019-10-22 | 2021-06-11 | 北京航天希尔测试技术有限公司 | Electrically-excited six-degree-of-freedom vibration test device |
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| JPH03122537A (en) * | 1989-10-06 | 1991-05-24 | Hitachi Ltd | Vibration adding method and apparatus |
| JPH0755630A (en) * | 1993-08-10 | 1995-03-03 | Mitsubishi Heavy Ind Ltd | Earthquake-resistance experimental system |
| JPH10123008A (en) * | 1996-10-16 | 1998-05-15 | Hitachi Ltd | Apparatus and method for vibration test of structure |
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| JP3122537B2 (en) * | 1992-07-15 | 2001-01-09 | 三菱樹脂株式会社 | Method for producing fiber reinforced plastic composite plate |
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2004
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03122537A (en) * | 1989-10-06 | 1991-05-24 | Hitachi Ltd | Vibration adding method and apparatus |
| JP3122537B2 (en) * | 1992-07-15 | 2001-01-09 | 三菱樹脂株式会社 | Method for producing fiber reinforced plastic composite plate |
| JPH0755630A (en) * | 1993-08-10 | 1995-03-03 | Mitsubishi Heavy Ind Ltd | Earthquake-resistance experimental system |
| JPH10123008A (en) * | 1996-10-16 | 1998-05-15 | Hitachi Ltd | Apparatus and method for vibration test of structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013134921A1 (en) * | 2012-03-13 | 2013-09-19 | 青岛四方车辆研究所有限公司 | Air charging and discharging control device for air spring support system |
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| CN1651892A (en) | 2005-08-10 |
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