CN103776608A - Synchronous in-phase shunt-excitation vibration device - Google Patents
Synchronous in-phase shunt-excitation vibration device Download PDFInfo
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- CN103776608A CN103776608A CN201410011159.3A CN201410011159A CN103776608A CN 103776608 A CN103776608 A CN 103776608A CN 201410011159 A CN201410011159 A CN 201410011159A CN 103776608 A CN103776608 A CN 103776608A
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Abstract
The invention provides a synchronous in-phase shunt-excitation vibration device which comprises a vibration table system, a common table top, an auxiliary guide system frame structure and a hydrostatic bearing guide device. The hydrostatic bearing guide device comprises an optical axis, a shaft sleeve, a connecting frame and a common table top installation structure, wherein the common table top installation structure is fixedly installed at the two ends of the optical axis, the shaft sleeve sleeves the optical axis, the optical axis and the shaft sleeve are in clearance fit, a gap between the optical axis and the shaft sleeve is filled with lubricating oil, and the connecting frame is fixedly installed on one side of the shaft sleeve. The hydrostatic bearing guide device is adopted, a motion axis (the optical axis) and a base (the shaft sleeve) of the guide device are in clearance fit, the surface matching degree is very high, good decoupling can be achieved, no eccentric torque is generated on vibration tables, and synchronous in-phase vibration of a plurality of vibration tables is ensured.
Description
Technical field
The present invention relates to a kind of synchronous 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 fail-test, is a kind of means of the true environment for use of analog equipment, is a kind of effective method in product design and evaluation.Electric vibration experiment is for vibrative equipment, and this vibration can be added to the equipment on other structures, parts or product.Generally comprise electric vibration table stage body, power amplifier, controller and utility appliance etc.Electric vibration table is mainly by constant magnetic field be arranged in the coil that magnetic field is connected with certain exchange current and interact, and produces certain exciting force.
Journey range is more and more far away gradually for aerospace flight vehicle, and speed is more and more faster, causes that aircraft volume is increasing, weight is more and more heavier, develops into gradually several tons, even tens tons by hundreds of kilogram.For this reason, adopt that many vibratory equipments are common promotes a testpieces, increased shaking table thrust, reached the requirement to large-scale experiment part excitation, realized the synchronous sharp problem also in the same way of multiple shaking tables.But adopt, many vibratory equipments are common promotes a testpieces, exist multiple shaking tables cannot be synchronously sharp problem also in the same way, the asynchronous meeting of multiple shaking tables produces eccentric moment to shaking table, and vibration test cannot be carried out.
Summary of the invention
The object of the invention is to overcome prior art deficiency, a kind of synchronous sharp vibrating device also in the same way of multiple shaking tables of realizing is provided.
Technical solution of the present invention: a kind of synchronous homophase induced vibration device, involving vibrations platform system, shaking table system involving vibrations platform and shaking table bearing, synchronous homophase induced vibration device also comprise public table top, auxiliary guidance system framed structure and hydrostatic bearing guide piece;
Described hydrostatic bearing guide piece comprises optical axis, axle sleeve, connecting frame 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 on optical axis, it between optical axis and axle sleeve, is clearance fit, in gap between optical axis and axle sleeve, be full of lubricating oil, connecting frame is fixedly mounted on axle sleeve one side;
Described public table top is made up of upper table surface and lower chamber, and lower chamber is frame-type cavity body structure, and lower chamber is fixedly connected with the moving-coil of shaking table;
The shaking table of described shaking table system is fixedly connected with auxiliary guidance system framed structure by shaking table bearing, optical axis is connected by the lower chamber lateral surface of public table top mounting structure and public table top, axle sleeve is connected by connecting frame and auxiliary guidance system framed structure, treats that the testpieces of vibration test is arranged on the center of the upper table surface of public table top; When shaking table system vibration, public table top drives optical axis to vibrate thereupon, by coordinating between optical axis and axle sleeve, realizes synchronous homophase excited vibration.
The machining precision of described optical axis is
the machining precision of axle sleeve is
surface both roughness is higher than 0.8 μ m, and circularity is higher than 0.006mm, and cylindricity is higher than 0.006mm, and the right alignment between optical axis and axle sleeve is higher than 0.006mm.
Described shaking table system is made up of three shaking tables that are the distribution of " product " font.
Described auxiliary guidance system framed structure is triangular frame structure, comprise principal arm and three auxiliarys of three distributions triangular in shape, three principal arms are fixed together between two by auxiliary, on principal arm, two of symmetrical processing are used for installing the hydrostatic bearing mounting blocks of hydrostatic bearing guide piece, and two ends processing is used for installing the shaking table mounting blocks of shaking table bearing.
The present invention's beneficial effect compared with prior art:
(1) the present invention adopts hydrostatic bearing guide piece, between guide piece kinematic axis (optical axis) and pedestal (axle sleeve), it is clearance fit, surface engagement degree is high, can realize good decoupling zero, can not produce eccentric moment to shaking table, guarantee the synchronous in phase vibration of multiple shaking tables;
(2) in the gap between optical axis of the present invention and axle sleeve, fill wearproof lubricant and be lubricated, the in the situation that of high-torque, still can normally lubricate, guarantee adhesion between axle and pedestal, play a role lastingly;
(3) optical axis of hydrostatic bearing guide piece of the present invention and axle sleeve processing request, makes hydrostatic bearing guide piece can better guarantee the synchronous in phase vibration of multiple shaking tables, avoids because the asynchronous meeting of multiple shaking tables produces eccentric moment to shaking table;
(4) the present invention is current largest domestic vibration experiment, adopt 6 groups of hydrostatic bearing guide pieces can realize larger upsetting moment test, three 200kN electric vibrating systems are excited at the same time, realize maximum exciting force 540kN vibration experiment, can realize maximum load 16000kg System for Large-scale Specimen vibration test;
(5) the public table top of the present invention adopts cavity type design, effectively alleviates table top quality, improves resonant frequency;
(6) the present invention realizes many of rigid attachment synchronous sharp vibrational systems also in the same way, and three shaking table consistance are high, and within the scope of 2～1000Hz, maximal phase potential difference is 1.5 °;
(7) the present invention can be widely used in the fields such as Aero-Space, electronics, weapons, instrument and meter, transportation and energy, is especially carrying out the vibration tests such as overall satellite, satellite solar array array, large satellite electronic communication system, whole guided missile.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention;
Fig. 2 is hydrostatic bearing guide piece structural representation of the present invention;
Fig. 3 is the public mesa structure schematic diagram of the present invention;
Fig. 4 is the public table top stereographic map of the present invention;
Fig. 5 is the public table top of the present invention, auxiliary guidance system framed structure and hydrostatic bearing guide piece wiring layout;
Fig. 6 is the auxiliary guidance system framed structure schematic diagram of the present invention;
Fig. 7 is the auxiliary guidance system framed structure of the present invention and hydrostatic bearing guide piece wiring layout.
Embodiment
Below in conjunction with accompanying drawing and instantiation, the present invention is described in detail.
The present invention as shown in Figure 1, involving vibrations platform system 2, public table top 3, auxiliary guidance system framed structure 4 and hydrostatic bearing guide piece 5, shaking table system 2 comprises three shaking tables and shaking table bearing 6.Can be multi shaker more, be generally symmetric form.
The testpieces for the treatment of vibration test is the product of participating in the experiment of vibration experiment, passes through public table top be connected with shaking table with test fixture, and testpieces is arranged on the center of public table top 3.
The public table top 3 of the present invention adopts magnesium alloy cast product, and blank weight reaches 2.6 tons, and greatest diametrical dimension reaches 2660mm, is current largest domestic.Quality is large, complex structure, and the requirement of existing frequency is ponderable requirement again.The present invention is complex structure system, the public mesa designs of plane formula is very important, material, quality, structure is all the principal element of the public table top frequency of operation of impact, under size and the certain condition of weight, guarantee that public table top weight is light, therefore choose what material very important, design essence is the physical dimension optimized design that physical construction has boundary constraint, and structure is carried out to rational optimal design, by public mesa dimensions, jigging platform moving coil single order mode frequency setting is boundary constraint, public table top quality minimum is set as to optimization aim, utilize Ansys software to analyze and solve, final complete design.
Auxiliary guidance system framed structure 4 as shown in Figure 6, is positioned on three vertical direction shaking table bearings 6, is connected with public table top 3 by hydrostatic bearing guide piece 5.Auxiliary guidance system framed structure 4 is triangular frame structure, comprise principal arm 41 and three auxiliarys 42 of three distributions triangular in shape, three principal arms 41 are fixed together between two by auxiliary 42, on principal arm 41, two of symmetrical processing are used for installing the hydrostatic bearing mounting blocks 44 of hydrostatic bearing guide piece 5, and two ends processing is used for installing the shaking table mounting blocks 45 of shaking table bearing 6.
Auxiliary guidance system framed structure 4 is supporting constructions of whole vibration testing device, has taken into full account installation, manufacture and performance when design.Auxiliary guidance system framed structure 4 is wanted to dismantle, and convenient transportation adopts open loop structure design with shaking table bearing 6, convenient fixing shaking table stage body, without any shelter, after shaking table stage body relative position is fixing, public table top 3, take shaking table bearing 6 as shoring of foundation, is conveniently adjusted.
Hydrostatic bearing guide piece 5 is 6 groups, and version is identical, connects into after an entirety respectively with auxiliary guidance system framed structure 4, connects public table top 5, guarantees the antidumping moment of pilot system.6 hydrostatic bearing guide pieces, are guaranteeing under the resistance to capsizing prerequisite of system, can implementation structure proper motions, do not interfere.
Hydrostatic bearing guide piece 5 is as shown in Fig. 2,5,7, be used for comprising optical axis 51, axle sleeve 52, connecting frame 53 and public table top mounting structure 54, public table top mounting structure 54 is fixedly mounted on the two ends of optical axis 51, axle sleeve 52 is enclosed within on optical axis 51, between optical axis 51 and axle sleeve 52, it is clearance fit, in gap between optical axis 51 and axle sleeve 52, be full of lubricating oil, connecting frame 53 is fixedly mounted on axle sleeve 52 1 sides.Hydrostatic bearing guide piece 5 is connected by connecting frame 53 and auxiliary guidance system framed structure 4, and hydrostatic bearing guide piece 5 is connected by public table top mounting structure 54 and lower chamber 32 lateral surfaces of public table top 3.
The machining precision of optical axis 51 is
the machining precision of axle sleeve 52 is
surface both roughness is higher than 0.8 μ m, and circularity is higher than 0.006mm, and cylindricity is higher than 0.006mm, and the right alignment between optical axis 51 and axle sleeve 52 is higher than 0.006mm.Optical axis 51 is fixed on public table top 3, and axle sleeve 52 is fixed in the support of framed structure, plays the effect of contraction that prevents other direction motion.
Many are synchronously vibrated and are generally large-sized structural parts in the same way, build is huge, the general eccentric phenomena that has center of gravity, cause producing compared with large eccentricity moment in vibration, the effect of many hydrostatic bearings guide piece guiding is exactly the ability that auxiliary shaking table improves antidumping moment, friction on shaking table direction of vibration is 0 simultaneously, avoids the excessive consumption shaking table of friction force thrust.Between single hydrostatic bearing guide piece optical axis and axle sleeve, be clearance fit, inside fill 20MPa68# high pressure anti-wear lubricating oil, improve the lubricant effect under high-torque.
Due to large-scale experiment part inner structure complexity, building block is numerous, is difficult to accomplish that center of gravity and the centre of form overlap, inevitably bring eccentric moment, special design of the present invention public table top adopt 6 groups of hydrostatic bearing guide pieces, between the two fitness require very high, guarantee high oil pressure 20MPa; Increase the antidumping moment of vibration experiment, guarantee vibration experiment verticality.
The vibrating controller of vibration control system for vibration test is controlled, has MIMO function and phase control function, to realize the synchro control at each reference mark.Vibration control system is used for test condition in accordance with regulations, and vibration test is controlled, and reaches expection vibratory response.Vibration control system adopts SD company vibration controller.
Vibration experiment quality is large, vibration force when vibration, ground being produced is large, ground supports system is easily out of shape, directly affect shaking table installation accuracy, the precision of also final decision system, therefore very high to ground support technical requirement, when design, adopt ground steel plate as ground supports, guarantee that shaking table can accurately be connected with public table top, auxiliary guidance system framed structure and hydrostatic bearing guide piece, to guarantee three shaking table stage bodies of vibration testing device and moving-coil high consistency error precision.
The present invention is for the synchronously also excited vibration in the same way of three shaking tables, be designed to three shaking tables " product " font, coordinate auxiliary guidance system, auxiliary guidance system framed structure and public table top are realized synchronously also excited vibration in the same way, be generalized to four, five also passable, but auxiliary guidance system framed structure, public table top and hydrostatic bearing guide piece position need to be designed according to equipment antidumping moment, version is generally symmetric form, and the quantity of installation and the physical dimension of guide piece are substantially similar.
The unspecified part of the present invention is known to the skilled person technology.
Claims (4)
1. a synchronous homophase induced vibration device, involving vibrations platform system (2), shaking table system (2) involving vibrations platform and shaking table bearing (6), is characterized in that: synchronous homophase induced vibration device also comprise public table top (3), auxiliary guidance system framed structure (4) and hydrostatic bearing guide piece (5);
Described hydrostatic bearing guide piece (5) comprises optical axis (51), axle sleeve (52), connecting frame (53) and public table top mounting structure (54), public table top mounting structure (54) is fixedly mounted on the two ends of optical axis (51), axle sleeve (52) is enclosed within on optical axis (51), between optical axis (51) and axle sleeve (52), it is clearance fit, in gap between optical axis (51) and axle sleeve (52), be full of lubricating oil, connecting frame (53) is fixedly mounted on axle sleeve (52) one sides;
Described public table top (3) is made up of upper table surface (31) and lower chamber (32), and lower chamber (32) is frame-type cavity body structure, and lower chamber (32) is fixedly connected with the moving-coil of shaking table;
The shaking table of described shaking table system (2) is fixedly connected with auxiliary guidance system framed structure (4) by shaking table bearing (6), optical axis (51) is connected by public table top mounting structure (54) and lower chamber (32) lateral surface of public table top (3), axle sleeve (52) is connected by connecting frame (53) and auxiliary guidance system framed structure (4), treats that the testpieces of vibration test is arranged on the center of the upper table surface of public table top (3) (31); When shaking table system (2) vibration, public table top (3) drives optical axis (51) to vibrate thereupon, by coordinating between optical axis (51) and axle sleeve (52), realizes synchronous homophase excited vibration.
2. the synchronous homophase of one according to claim 1 induced vibration device, is characterized in that: the machining precision of described optical axis (51) is
the machining precision of axle sleeve (52) is
surface both roughness is higher than 0.8 μ m, and circularity is higher than 0.006mm, and cylindricity is higher than 0.006mm, and the right alignment between optical axis and axle sleeve is higher than 0.006mm.
3. the synchronous homophase of one according to claim 1 induced vibration device, is characterized in that: described shaking table system (2) is made up of three shaking tables that are the distribution of " product " font.
4. the synchronous homophase of one according to claim 1 induced vibration device, it is characterized in that: described auxiliary guidance system framed structure (4) is triangular frame structure, comprise principal arm (41) and three auxiliarys (42) of three distributions triangular in shape, three principal arms (41) are fixed together between two by auxiliary (42), two of the upper symmetrical processing of principal arm (41) are used for installing the hydrostatic bearing mounting blocks (44) of hydrostatic bearing guide piece (5), two ends processing is used for installing the shaking table mounting blocks (45) of shaking table bearing (6).
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| Application Number | Priority Date | Filing Date | Title |
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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 CN103776608B (en) | 2016-09-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560816A (en) * | 2017-09-25 | 2018-01-09 | 怀化学院 | New-energy automobile combination property controls test device |
| CN108254145A (en) * | 2017-12-29 | 2018-07-06 | 苏州东菱智能减振降噪技术有限公司 | A kind of control method for realizing multi shaker synchronous vibration |
Citations (5)
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| US5549005A (en) * | 1993-03-22 | 1996-08-27 | Imv Corporation | Vibration testing apparatus with increased rigidity in static pressure bearing |
| 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 |
| CN101487765A (en) * | 2009-02-13 | 2009-07-22 | 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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2014
- 2014-01-10 CN CN201410011159.3A patent/CN103776608B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5549005A (en) * | 1993-03-22 | 1996-08-27 | Imv Corporation | Vibration testing apparatus with increased rigidity in static pressure bearing |
| 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 |
| CN101487765A (en) * | 2009-02-13 | 2009-07-22 | 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560816A (en) * | 2017-09-25 | 2018-01-09 | 怀化学院 | New-energy automobile combination property controls test device |
| CN107560816B (en) * | 2017-09-25 | 2019-03-01 | 怀化学院 | New-energy automobile comprehensive performance controls test device |
| CN108254145A (en) * | 2017-12-29 | 2018-07-06 | 苏州东菱智能减振降噪技术有限公司 | A kind of control method for realizing multi shaker synchronous vibration |
| 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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| CN103776608B (en) | 2016-09-14 |
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