CN103776608B - A kind of synchronization homophase induced vibration device - Google Patents
A kind of synchronization homophase induced vibration device Download PDFInfo
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- CN103776608B CN103776608B CN201410011159.3A CN201410011159A CN103776608B CN 103776608 B CN103776608 B CN 103776608B CN 201410011159 A CN201410011159 A CN 201410011159A CN 103776608 B CN103776608 B CN 103776608B
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Abstract
The present invention proposes a kind of synchronization homophase induced vibration device, including shaking table system, public table top, auxiliary guidance system frame structure and hydrostatic bearing guider；Hydrostatic bearing guider includes optical axis, axle sleeve, connection framework and public table top mounting structure, public table top mounting structure is fixedly mounted on the two ends of optical axis, axle sleeve is enclosed within optical axis, it it is matched in clearance between optical axis and axle sleeve, it is full of lubricating oil in gap between optical axis and axle sleeve, connects framework and be fixedly mounted on axle sleeve side.The present invention uses hydrostatic bearing guider, it is matched in clearance between guider kinematic axis (optical axis) and pedestal (axle sleeve), surface engagement degree is high, can realize preferably decoupling, vibration table will not be produced eccentric moment, it is ensured that multiple vibration tablies synchronize in phase vibration.
Description
Technical field
The present invention relates to a kind of synchronization homophase induced vibration device, belong to vibration test technical field.
Background technology
Vibration test is the important component part of product dynamic environmental test and reliability test, is analog equipment
The true a kind of means using environment, are a kind of effective methods in product design and evaluation.Electric vibrating
Pilot system is used to produce the equipment of vibration, and this vibration can be added to other structures, parts or product
Equipment on product.Generally comprise electric vibration table stage body, power amplifier, controller and auxiliary equipment etc..
Electric vibration table is mainly connected with the coil phase interaction of certain alternating current by constant magnetic field and being positioned in magnetic field
With, and produce certain exciting force.
Aerospace flight vehicle gradually journey range is more and more remote, and speed is increasingly faster, causes aircraft volume more
Come the biggest, weight is more and more heavier, is gradually developed into several tons by hundreds of kilogram, even tens tons.To this end, adopt
Jointly promote a testpieces with many vibratory equipments, add vibration table thrust, reached large-scale experiment part
The requirement of excitation, it is achieved that the problem that multiple vibration tablies synchronize in the same direction and swash.But use many vibratory equipments
, there are the problem that multiple vibration table cannot synchronize in the same direction and swash, multiple vibration tablies in one testpieces of common promotion
Asynchronous meeting produces eccentric moment to vibration table, makes vibration test cannot be carried out.
Summary of the invention
It is an object of the invention to overcome prior art not enough, it is provided that one realizes multiple vibration table and synchronizes in the same direction
And the vibrating device swashed.
The technical solution of the present invention: a kind of synchronization homophase induced vibration device, including shaking table system,
Shaking table system includes vibration table and vibration table bearing, synchronizes homophase and induced vibration device also includes public
Face, auxiliary guidance system frame structure and hydrostatic bearing guider；
Described hydrostatic bearing guider includes optical axis, axle sleeve, connection framework and public table top mounting structure,
Public table top mounting structure is fixedly mounted on the two ends of optical axis, and axle sleeve is enclosed within optical axis, between optical axis and axle sleeve
For matched in clearance, in the gap between optical axis and axle sleeve, it is full of lubricating oil, connects framework and be fixedly mounted on axle sleeve
Side；
Described public table top is made up of upper table surface and lower chamber, and lower chamber is frame-type cavity body structure, cavity of resorption
Body is fixing with the moving-coil of vibration table to be connected；
The vibration table of described shaking table system is solid with auxiliary guidance system frame structure by vibration table bearing
Fixed connection, optical axis is connected by the lower chamber lateral surface of public table top mounting structure with public table top, and axle sleeve leads to
Cross connection framework to be connected with auxiliary guidance system frame structure, treat that the testpieces of vibration test is arranged on public
The center of the upper table surface in face；During shaking table system vibration, public table top drives optical axis to vibrate therewith, logical
Cross and coordinate between optical axis and axle sleeve, it is achieved synchronize homophase excited vibration.
The machining accuracy of described optical axis isThe machining accuracy of axle sleeve isSurface both roughness is high
In 0.8 μm, circularity is higher than 0.006mm, and cylindricity is higher than 0.006mm, coaxial between optical axis and axle sleeve
Degree is higher than 0.006mm.
By three, in " product " font, the vibration table of distribution forms described shaking table system.
Described auxiliary guidance system frame structure is triangular frame structure, including three distributions triangular in shape
Principal arm and three auxiliarys, three principal arms are fixed together two-by-two by auxiliary, two use of symmetrical machining on principal arm
Installing the hydrostatic bearing mounting blocks of hydrostatic bearing guider, two ends processing is used for installing vibration table bearing
Vibration table mounting blocks.
Present invention beneficial effect compared with prior art:
(1) present invention uses hydrostatic bearing guider, guider kinematic axis (optical axis) and pedestal (axle
Set) between be matched in clearance, surface engagement degree is high, can realize preferable decoupling, will not producing vibration table
Raw eccentric moment, it is ensured that multiple vibration tablies synchronize in phase vibration；
(2) wearproof lubricant is filled in the gap between optical axis of the present invention and axle sleeve to be lubricated, at high-torque
In the case of, still can normally lubricate, it is ensured that adhesion between axle and pedestal, persistently play a role；
(3) optical axis of hydrostatic bearing guider of the present invention and axle sleeve processing request, makes hydrostatic bearing guide dress
Put and can more preferably ensure that multiple vibration table synchronizes in phase vibration, it is to avoid owing to the asynchronous meeting of multiple vibration tablies is to shaking
Dynamic platform produces eccentric moment；
(4) present invention is current largest domestic vibration experiment, uses 6 groups of hydrostatic bearing guider energy
Enough realizations bigger tilting moment test, three 200kN electric vibrating systems are excited at the same time, it is achieved maximum exciting
Power 540kN vibration experiment, it is possible to realize maximum load 16000kg System for Large-scale Specimen vibration test；
(5) the public table top of the present invention uses cavity type design, effectively alleviates table top quality, improves resonant frequency；
(6) present invention realizes the vibrational system that the multiple stage of rigid attachment synchronizes in the same direction and swashs, three vibration tablies one
Cause is high, and in the range of 2～1000Hz, maximum phase difference is 1.5 °；
(7) the composite can be widely applied to Aero-Space, electronics, weapons, instrument and meter, transportation and energy etc.
Field, especially carry out overall satellite, satellite solar array array, large satellite electronic communication system,
The vibration tests such as whole guided missile.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention；
Fig. 2 is hydrostatic bearing guider structural representation of the present invention；
Fig. 3 is the present invention public mesa structure schematic diagram；
Fig. 4 is the present invention public table top axonometric chart；
Fig. 5 is the public table top of the present invention, auxiliary guidance system frame structure and the assembling of hydrostatic bearing guider
Figure；
Fig. 6 is that the present invention assists guidance system frame structure schematic diagram；
Fig. 7 is that the present invention assists guidance system frame structure and hydrostatic bearing guider installation diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing and instantiation, the present invention is described in detail.
The present invention is as it is shown in figure 1, include shaking table system 2, public table top 3, auxiliary guidance system framework
Structure 4 and hydrostatic bearing guider 5, shaking table system 2 includes three vibration tablies and vibration table bearing 6.
Can be more vibration table, generally symmetric form.
Treat that the testpieces of vibration test is the product of participating in the experiment of vibration experiment, with test fixture by public
Face is connected with vibration table, and testpieces is arranged on the center of public table top 3.
Shaking table system 2 is the critical piece of whole pilot system, including three distributions in triangle disposition
Vertical direction vibration table, three vibration table bearings 6 and supporting power amplifier, cooling system.Vibration table stage body
Being arranged on vibration table bearing 6, moving-coil is connected with public table top 3.Vibration table bearing 6 version is identical,
Being respectively intended to support three vertical direction vibration tablies, auxiliary guidance system framework is placed on vibration table bearing 6 top
Structure 4.This example utilizes three 200kN vibration tablies to encourage by triangle disposition arrangement mode simultaneously, it is achieved
Maximum exciting force 540kN vibration experiment, it is possible to realize the vibration examination of maximum load 16000kg System for Large-scale Specimen
Test.
Public table top 3 as shown in Figure 3,4, is made up of upper table surface 31 and lower chamber 32, and lower chamber 32 is
Frame-type cavity body structure, uses cavity type design, effectively alleviates table top quality, improve resonant frequency.Cavity of resorption
Body 32 is vertically connected with three vertical direction jigging platform moving coils, it is achieved three vibration table combination thrusts
Motion, upper table surface 31 is used for joint test fixture.
The public table top of the present invention 3 uses magnesium alloy cast product, blank weight to reach 2.6 tons, maximum gauge
Size reaches 2660mm, is current largest domestic.Quality is big, structure is complicated, and the requirement of existing frequency has again
The requirement of weight.The present invention is structure complication system, and the public mesa designs of plane formula is critically important, material, matter
Amount, structure are all the principal elements affecting public table top operating frequency, under conditions of size and weight are certain,
Ensure that public table top weight wants light, therefore choose what material critically important, design substantially frame for movement
There is the physical dimension optimized design of boundary constraint, and structure is reasonably optimized design, by public
Face size, jigging platform moving coil first-order modal frequency setting are boundary constraint, public table top quality minimum are set
For optimization aim, utilize Ansys software to be analyzed and solve, being finally completed design.
Auxiliary guidance system frame structure 4 as shown in Figure 6, is positioned over three vertical direction vibration table bearings 6
On, it is connected with public table top 3 by hydrostatic bearing guider 5.Auxiliary guidance system frame structure 4 is
Triangular frame structure, including principal arm 41 and three auxiliarys 42 of three distributions triangular in shape, three principal arms
41 are fixed together two-by-two by auxiliary 42, and on principal arm 41, symmetrical machining two is used for installing hydrostatic bearing guiding
The hydrostatic bearing mounting blocks 44 of device 5, two ends processing is used for installing the vibration table mounting blocks of vibration table bearing 6
45。
Auxiliary guidance system frame structure 4 is the supporting construction of whole vibration testing device, fully examines during design
Consider installation, manufactured and performance.Auxiliary guidance system frame structure 4 is wanted to dismantle, convenient transport, with
Vibration table bearing 6 uses open loop structure to design, and convenient fixing vibration table stage body, without any shelter, vibration
After platform stage body is fixing relative to position, public table top 3 supports based on vibration table bearing 6, convenient adjustment.
Hydrostatic bearing guider 5 is 6 groups, and version is identical, respectively with auxiliary guidance system framework knot
After structure 4 connects into an entirety, connect public table top 5, it is ensured that the resistance to tipping moment of pilot system.6
Hydrostatic bearing guider, under the resistance to capsizing premise ensureing system, it is possible to realize structure proper motion,
Do not interfere.
Hydrostatic bearing guider 5, as shown in Fig. 2,5,7, is used for including optical axis 51, axle sleeve 52, connecting
Connecing framework 53 and public table top mounting structure 54, public table top mounting structure 54 is fixedly mounted on optical axis 51
Two ends, axle sleeve 52 is enclosed within optical axis 51, is matched in clearance between optical axis 51 and axle sleeve 52, optical axis 51
And in the gap between axle sleeve 52, it is full of lubricating oil, connect framework 53 and be fixedly mounted on axle sleeve 52 side.
Hydrostatic bearing guider 5 is connected with auxiliary guidance system frame structure 4 by connecting framework 53, static pressure
Bearing guides 5 is solid with lower chamber 32 lateral surface of public table top 3 by public table top mounting structure 54
Even.
The machining accuracy of optical axis 51 isThe machining accuracy of axle sleeve 52 isSurface both roughness is high
In 0.8 μm, circularity is higher than 0.006mm, and cylindricity is higher than 0.006mm, between optical axis 51 and axle sleeve 52
Axiality higher than 0.006mm.Optical axis 51 is fixed on public table top 3, and axle sleeve 52 is fixed on frame structure
Support on, play the effect of contraction preventing other direction from moving.
Multiple stage synchronizes the generally large-sized structural parts of vibration in the same direction, and build is huge, and the bias typically having center of gravity is existing
As, causing vibration produces relatively large eccentricity moment, the effect that many hydrostatic bearings guider guides assists exactly
Vibration table improves the ability of resistance to tipping moment, and the friction on vibration table direction of vibration is 0 simultaneously, it is to avoid rub
Wiping power excessive consumption vibration table thrust.Join for gap between single hydrostatic bearing guider optical axis and axle sleeve
Close, inside fill 20MPa68# high pressure anti-wear lubricating oil, improve the lubricant effect under high-torque.
Owing to large-scale experiment part internal structure is complicated, building block is numerous, is difficult to accomplish that center of gravity and the centre of form overlap,
Inevitably bringing eccentric moment, the present invention has been specifically designed public table top and has used 6 groups of hydrostatic bearings to guide
Device, fitness requires the highest between the two, it is ensured that high oil pressure 20MPa；Increase the anti-of vibration experiment
Tilting moment, it is ensured that vibration experiment perpendicularity.
Vibration control system, for the vibrating controller being controlled vibration test, has multiple-input and multiple-output
Function and phase control function, to realize the Synchronization Control at each control point.Vibration control system is for by regulation
Experimental condition, vibration test is controlled, reach expect vibratory response.Vibration control system uses SD
Company's vibration controller.
Vibration experiment quality is big, and vibration force during vibration produced ground is big, and ground supporting system is easy
Deformation, directly affects vibration table installation accuracy, and also the precision of final decision systems, therefore supports technology to ground
Require the highest, during design, use ground steel plate as ground supports, it is ensured that vibration table can be with public table top, auxiliary
The assistant director of a film or play accurately connects to system frame structure and hydrostatic bearing guider, to ensure vibration testing device three
Vibration table stage body and moving-coil high consistency error precision.
The present invention synchronizes in the same direction and excited vibration for three vibration tablies, is designed as three vibration table triangle dispositions,
Auxiliary guidance system, auxiliary guidance system frame structure and public table top is coordinated to realize synchronizing in the same direction and exciting
Dynamic, be generalized to four, five can also, but auxiliary guidance system frame structure, public table top and static pressure
Bearing guides position needs to be designed according to equipment resistance to tipping moment, and version is generally symmetric figure
Formula, the quantity of installation and the physical dimension of guider are substantially similar.
The unspecified part of the present invention is known to the skilled person technology.
Claims (3)
1. synchronize homophase an induced vibration device, including shaking table system (2), shaking table system (2)
Including vibration table and vibration table bearing (6), it is characterised in that: synchronize homophase and induced vibration device also includes
Public table top (3), auxiliary guidance system frame structure (4) and hydrostatic bearing guider (5)；
Described hydrostatic bearing guider (5) includes optical axis (51), axle sleeve (52), connects framework (53)
With public table top mounting structure (54), public table top mounting structure (54) is fixedly mounted on optical axis (51)
Two ends, axle sleeve (52) is enclosed within optical axis (51), between optical axis (51) and axle sleeve (52) being
Gap coordinates, and is full of lubricating oil, connects framework (53) in the gap between optical axis (51) and axle sleeve (52)
It is fixedly mounted on axle sleeve (52) side；
Described public table top (3) is made up of upper table surface (31) and lower chamber (32), lower chamber (32)
For frame-type cavity body structure, lower chamber (32) is fixing with the moving-coil of vibration table to be connected；
The vibration table of described shaking table system (2) is by vibration table bearing (6) and auxiliary guidance system
Frame structure (4) is fixing to be connected, optical axis (51) by public table top mounting structure (54) with public
Lower chamber (32) lateral surface in face (3) is connected, and axle sleeve (52) is by connecting framework (53) and auxiliary
Guidance system frame structure (4) is connected, and treats that the testpieces of vibration test is arranged on public table top (3)
The center of upper table surface (31)；During shaking table system (2) vibration, public table top (3) drives light
Axle (51) vibrates therewith, by coordinating between optical axis (51) and axle sleeve (52), it is achieved synchronize homophase
And excited vibration；
The machining accuracy of described optical axis (51) isThe machining accuracy of axle sleeve (52) isTwo
Person's surface roughness be higher than 0.8 μm, circularity be higher than 0.006mm, cylindricity be higher than 0.006mm, optical axis and
Axiality between axle sleeve is higher than 0.006mm.
A kind of synchronization homophase the most according to claim 1 induced vibration device, it is characterised in that: institute
By three, in " product " font, the vibration table of distribution forms the shaking table system (2) stated.
A kind of synchronization homophase the most according to claim 1 induced vibration device, it is characterised in that: institute
Auxiliary guidance system frame structure (4) stated is triangular frame structure, including three distributions triangular in shape
Principal arm (41) and three auxiliarys (42), three principal arms (41) are fixed on one two-by-two by auxiliary (42)
Rising, the upper symmetrical machining two of principal arm (41) is used for installing the hydrostatic bearing of hydrostatic bearing guider (5)
Mounting blocks (44), two ends processing is used for installing the vibration table mounting blocks (45) of vibration table bearing (6).
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| CN201410011159.3A CN103776608B (en) | 2014-01-10 | 2014-01-10 | A kind of synchronization homophase induced vibration device |
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| CN201410011159.3A CN103776608B (en) | 2014-01-10 | 2014-01-10 | A kind of synchronization homophase induced vibration device |
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| CN103776608B true CN103776608B (en) | 2016-09-14 |
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| CN107560816B (en) * | 2017-09-25 | 2019-03-01 | 怀化学院 | New-energy automobile comprehensive performance controls test device |
| CN108254145B (en) * | 2017-12-29 | 2020-06-26 | 苏州东菱智能减振降噪技术有限公司 | Control method for realizing synchronous vibration of multiple vibration tables |
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| JP2860745B2 (en) * | 1993-03-22 | 1999-02-24 | アイエムブイ株式会社 | Vibration test equipment |
| CN201110796Y (en) * | 2007-11-16 | 2008-09-03 | 苏州试验仪器总厂 | New structure of dynamoelectric oscillating table movable coil table-board |
| CN201218773Y (en) * | 2008-05-04 | 2009-04-08 | 苏州试验仪器总厂 | Three-axis vibration experiment apparatus |
| CN101487765B (en) * | 2009-02-13 | 2011-07-20 | 苏州苏试试验仪器有限公司 | Three-axial vibration composite testing apparatus |
| CN102478449A (en) * | 2010-11-25 | 2012-05-30 | 北京航天斯达新技术装备公司 | Triaxial mechanical decoupling device and vibration testing system |
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