CN107449579A - A kind of big displacement electric vibration table - Google Patents
A kind of big displacement electric vibration table Download PDFInfo
- Publication number
- CN107449579A CN107449579A CN201710654104.8A CN201710654104A CN107449579A CN 107449579 A CN107449579 A CN 107449579A CN 201710654104 A CN201710654104 A CN 201710654104A CN 107449579 A CN107449579 A CN 107449579A
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- coil
- moving
- existing
- stage body
- gusset
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
Abstract
The present invention relates to a kind of big displacement electric vibration table, including stage body, is arranged on stage body center moving-coil moving up and down, direct current exciting device, suspension support, the flexible air-bag and moving-coil support base that load bearing support is carried out to moving-coil bottom, the axis of guide, drive circuit；Moving-coil is made up of skeleton and driving coil, and ring week moving-coil gusset is integrally formed with it in skeleton upper end, corresponding with moving-coil gusset, and multiple up spacing clapboards are fixedly installed on stage body；Suspension support is the multiple U-shaped elastic arms being connected between stage body and moving-coil top set around moving-coil；Excitation unit mainly includes magnetic cylinder, upper and lower magnet exciting coil, top crown and bottom crown；It is characterized in that shaft length is oriented to than the existing 12mm of axis of guide extended length 10；The impact stroke of clapboard and moving-coil gusset place-limited edge lengthens 10 12mm than its existing impact stroke；The spread length of U-shaped elastic arm lengthens 10 12mm than the spread length of existing U-shaped elastic arm.
Description
Technical field
The present invention relates to technical field of mechanical environmental test, more particularly to a kind of big displacement electric vibration table.
Background technology
Electric vibration table is used for the vibration during transport, storage, use in experiment lab simulation electric and electronic product
Environment, the vibration-resistant property of product is detected, be widely used in the industries such as Aeronautics and Astronautics, electrician, electronics, instrument and meter, medical treatment, machinery.
Electric vibration table is the phase for the coil that certain alternating current is connected with by constant D.C. magnetic field and in the magnetic field
Electric power caused by interaction is come the shake table that drives.Its structure mainly includes stage body, be arranged in stage body it is central can on
The excitation unit of the moving-coil of lower movement, the offer D.C. magnetic field set around moving-coil, suspension strut is carried out to moving-coil top and hanged
Hang support member, the flexible air-bag and moving-coil support base of load bearing support, the guiding being oriented to moving-coil are carried out to moving-coil bottom
Axle, and drive circuit.Wherein, moving-coil as oscillating component critical piece by top set work top skeleton and coiling
Driving coil composition on skeleton, moving-coil gusset is integrally formed with skeleton top ring Zhou Yuqi.Suspension support is around dynamic
The multiple U-shaped elastic arms being connected between moving-coil top and stage body set are enclosed, the moving-coil machinery that its effect is to provide permission shakes
Dynamic stroke range, namely moving-coil maximum displacement peak-to-peak value.The effect of the axis of guide be traffic direction above and below moving-coil is oriented to and
Stroke positions, and suppresses oscillation crosswise and the load bearing support effect in the non-master direction that shakes, and moving-coil is gone all the time by setting during exercise
Journey is maintained at center.Multiple vertical clapboards being connected on stage body, clapboard and moving-coil are also set up around moving-coil top
The moving-coil gusset of skeleton coordinates, for limiting the up overtravel of moving-coil.Excitation unit mainly include around moving-coil set magnetic cylinder,
Magnet exciting coil up and down in magnetic cylinder, respectively positioned at magnetic cylinder top, the top crown and bottom crown of bottom.
When shake table works, exciting current is passed through in magnet exciting coil, then is surrounded and is formed by excitation unit in stage body center
Annular space be that very strong radial D.C. magnetic field is produced in working gas gap；By mechanicalness suspension support and the axis of guide
Suspension is positioned in the moving-coil in working gas gap and passes to alternating current, then the driving current of this alternating current and working gas gap it
In direct current constant magnetic field interaction produce alternation electric power-exciting force, this exciting force make moving-coil by setting stroke on
Lower movement, the movement is delivered to by moving coil framework on the work top of installation test specimen, so as to promote test specimen to vibrate.In addition, to protect
Equipment safe operation in stroke is set is demonstrate,proved, is also provided with displacement protecting device, is included in the connected limited block in moving-coil top, with
The limited block is corresponding to be provided with support on stage body, and two fine motions up and down for being fixedly mounted with two vertical distances thereon as setting stroke are opened
Closing, the microswitch connects alarm, the displacement between two microswitches of limited block follower ring respectively, once limited block collides
To any one in upper and lower microswitch, then the alarm connection of its connection, control circuit received displacement alarm signal, vibrated
Platform is stopped.
But in existing electric vibration table, the axis of guide runs maximum displacement peak-to-peak value and at most can only achieve 90mm up and down,
The structure of corresponding suspension support, the fit structure of clapboard and moving-coil gusset and displacement protecting device, being also all can only
Meet maximum displacement peak-to-peak value 90mm working condition.With the rapid development of the every profession and trades such as Aero-Space, some parts are being ground
Demands processed carry out effective travel peak-to-peak value >=100mm big displacement qualification test, and existing hydraulic vibration gen can not then meet
Experiment demand.
In consideration of it, how to be improved on existing electric vibration table architecture basics, big displacement, i.e. moving-coil displacement are realized
Peak-to-peak value >=100mm electric vibration table, turn into the problem of industry is paid close attention to.
The content of the invention
It is a primary object of the present invention in view of the above-mentioned problems, be improved on existing electric vibration table architecture basics,
A kind of big displacement electric vibration table is provided, realizes moving-coil displacement peak-to-peak value >=100mm, so as to meet the every profession and trades such as Aero-Space
In, some parts carry out the requirement of big displacement qualification test, promote every profession and trade to develop rapidly.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of big displacement electric vibration table, including stage body, are arranged in stage body that center is moving up and down to pass to alternating current
The moving-coil of stream, the direct current exciting device set around moving-coil, the suspension support of suspension strut is carried out to moving-coil top, to moving-coil
Bottom carries out the flexible air-bag and moving-coil support base of load bearing support, the axis of guide for moving-coil be oriented to up and down, and driving
Circuit；The driving coil that the moving-coil is set the skeleton of work top and be wound on skeleton by top forms, in skeleton upper end
Ring week moving-coil gusset is integrally formed with it, it is corresponding with the moving-coil gusset, it is up that multiple moving-coil gussets are fixedly installed on stage body
Spacing clapboard；The suspension support is the multiple U-shaped bullets being connected between stage body and moving-coil top set around moving-coil
Property arm；Excitation unit mainly includes the magnetic cylinder around moving-coil setting, the magnet exciting coil up and down in magnetic cylinder, is located at magnetic cylinder respectively
Top, the top crown and bottom crown of bottom；Moving-coil under working condition is moved up and down by setting stroke；It is characterized in that the guiding
Shaft length is than existing axis of guide extended length 10-12mm；The impact stroke of the clapboard and moving-coil gusset place-limited edge is more existing than it
There is impact stroke to lengthen 10-12mm；The spread length of the U-shaped elastic arm lengthens 10- than the spread length of existing U-shaped elastic arm
12mm。
The existing guiding shaft length is 90mm；The existing impact stroke of the clapboard and moving-coil gusset place-limited edge is
90mm；The spread length of the existing U-shaped elastic arm is 90mm.
Every stiffener plate of the moving-coil gusset is made up of the infolding swash plate integrally connected at vertical plate and its top, and
Place-limited edge is formed in bending place, the place-limited edge reduces 5-6mm than existing place-limited edge, and infolding swash plate corresponds to downward；The wedge shape
Plate is aligned with the place-limited edge above moving-coil gusset and is packed on stage body, and the clapboard shortens 5-6mm than existing clapboard.
Provided with displacement protecting device, it is included in the connected limited block in moving-coil top, it is corresponding with the limited block at described
Body is provided with support, is fixedly mounted with microswitch of two vertical distances for setting stroke thereon, and the microswitch connects report respectively
Alert device, limited block follower ring displacement between two microswitches.
The beneficial effects of the invention are as follows：By the transformation to existing electric vibration table, to influenceing electric vibration table stroke
Part has carried out structure and has improved and optimize, and so as to realize moving-coil displacement peak-to-peak value >=100mm, it is many to meet Aero-Space etc.
In industry, some parts carry out the requirement of big displacement qualification test, it is ensured that industry develops rapidly.Cost of the present invention is low, easy implementation,
Safety, is suitably promoted in electric vibration table industry.Through above-mentioned technological improvement, big displacement electric vibration table provided by the invention,
According to JJG 948-1999《Digital electric vibration experiment vertification regulation》In calibrating index calibrating checking is carried out to it,
The purpose of increase shake table stroke is effectively realized, meets the growing experiment demand of the industries such as space flight and aviation.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the mplifying structure schematic diagram of moving-coil part in Fig. 1；
Fig. 3 is the mplifying structure schematic diagram of suspension support part in Fig. 1；
Fig. 4 is clapboard and the mplifying structure schematic diagram of moving-coil gusset part in Fig. 1；
Fig. 5 is the mplifying structure schematic diagram of displacement protecting device；
In figure：1 moving-coil, 2 U-shaped elastic arms, 2 ' existing U-shaped elastic arms, 3 stage bodies, 4 magnetic cylinders, 5 stage body damping springs, 6
Body support frame, 7 flexible air-bags, 81 top crowns, 82 bottom crowns, magnet exciting coil on 91,92 times magnet exciting coils, 10 moving-coil support bases,
11 axis of guides, the 11 ' existing axis of guides, 12 driving coils, 13 clapboards, 13 ' existing clapboards, 14 moving-coil gussets, 15 skeletons, 16
Place-limited edge, 16 ' existing place-limited edges, 17 vertical plates, 17 ' existing vertical plates, 18, infolding swash plate, 18 ' existing infolding swash plates, 19-20
Microswitch, 21 supports, 22,23 alarms, 24 limited blocks.
Below in conjunction with drawings and examples to the detailed description of the invention.
Embodiment
Fig. 1-5 shows a kind of big displacement electric vibration table, including stage body 3, and it is moving up and down to be arranged on center in stage body
Moving-coil 1, the direct current exciting device set around moving-coil 1 of alternating current are passed to, the suspension of suspension strut is carried out to the top of moving-coil 1
Support member, the flexible air-bag 7 and moving-coil support base 10 for carrying out the bottom of moving-coil 1 load bearing support, moving-coil be oriented to up and down
The axis of guide 11, and drive circuit.As shown in figure 1, stage body 3 is supported on stage body support 6, platform is additionally provided with the bottom of stage body 3
Body damping spring 5.
The effect of the axis of guide 11 is that the principal oscillation direction run to moving-coil about 1 is oriented to and stroke positioning, suppression are non-
The oscillation crosswise in the main direction that shakes and load bearing support effect, axis of guide lower end are connected with flexible air-bag 7, and upper end passes through bolt and moving-coil
1 connection.The displacement of moving-coil motion is limited to the length of the axis of guide, and the axis of guide makes moving-coil be kept all the time by setting stroke during exercise
In center.
The driving coil 12 that the moving-coil 1 is set the skeleton 15 of work top and be wound on skeleton by top forms.
Skeleton upper end is integrally formed with ring week moving-coil gusset 14 with it, corresponding with the moving-coil gusset 14 referring to Fig. 4, fixed on stage body
The up spacing clapboard 13 of multiple moving-coil gussets is set.In actual fabrication, every stiffener plate of the moving-coil gusset be by
The integrally connected of infolding swash plate 18 at vertical plate 17 and its top is formed, and forms place-limited edge 16 in bending place, and the place-limited edge 16 compares
Existing place-limited edge 16 ' reduces 5-6mm, namely vertical plate 17 shortens 5-6mm than existing vertical plate 17 ', and existing infolding swash plate 18 ' is right
Answering downward turns into infolding swash plate 18；The clapboard 13 is aligned with the place-limited edge 16 above moving-coil gusset and is packed in stage body
On, the clapboard 13 shortens 5-6mm than existing clapboard 13 '.So, when moving-coil 1 moves up and down, stroke adds 10-
12mm。
The suspension support is the multiple U-shaped bullets being connected between stage body 3 and the top of moving-coil 1 set around moving-coil 1
Property arm 2, there is provided the mechanical oscillation stroke range that a kind of moving-coil allows, moving-coil U-shaped elastic arm 2 when moving up and down can bear to bend
Power, and expansion is stretched, ring week, multiple U-shaped elastic arms played a part of moving-coil stroke limit and laterally centered positioning up and down；U-shaped bullet
Property arm 2 using copper sheet make, there is good rigidity, pliability and elasticity.
Excitation unit mainly includes magnetic cylinder 4, the upper magnet exciting coil 91 in magnetic cylinder and the lower excitation set around moving-coil 1
Coil 92, it is located at magnetic cylinder top, the top crown 81 and bottom crown 82 of bottom respectively；Moving-coil 1 under working condition is by setting stroke
Lower movement.
Existing structure as shown in the dotted line in Fig. 2-4, the length of the existing axis of guide 11 ' of electric vibration table for H1 '=
90mm；The existing impact stroke of clapboard 13 ' and moving-coil gusset place-limited edge 16 ' is 90mm；The stretching, extension length of existing U-shaped elastic arm 2 '
Spend for 90mm.Therefore, the maximum setting stroke of existing electric vibration table is maximum displacement peak-to-peak value=90mm.
It is a feature of the present invention that the length of the axis of guide 11 is than the existing extended length of the axis of guide 11 ' 10-12mm, it is H1
=100-102mm.
Place-limited edge 16 reduces 5-6mm than existing place-limited edge 16 ', and infolding swash plate corresponds to downward；The clapboard 13 is than existing
Clapboard 13 ' shortens 5-6mm.So, when moving-coil 1 moves up and down, stroke adds H2 '=10-12mm.Therefore, clapboard
13 with the impact stroke of moving-coil gusset place-limited edge 16 than its existing impact stroke lengthening 10-12mm, be 100-102mm.
The spread length of the U-shaped elastic arm 2 lengthens 10-12mm than the spread length of existing U-shaped elastic arm 2 ', is 100-
102mm.So, in shake table test constantly, its maximum displacement peak-to-peak value can reach or more than 100mm, it is electronic to turn into big displacement
Shake table.
Displacement protecting device is additionally provided with the present invention, as shown in figure 5, it is included in the connected limited block 24 in the top of moving-coil 1, with
The limited block 24 is corresponding to be provided with support 21 on stage body, is fixedly mounted with microswitch of two vertical distances for setting stroke thereon
19th, 20, the microswitch 19,20 is connected to alarm 22,23 respectively, and the follower ring 1 of limited block 24 is in two microswitch metas
Move.Collided when moving-coil 1 moves to upper extreme position with microswitch 20, then alarm 22 is alarmed, when moving-coil 1 moves to lower limit position
Collided with microswitch 19, then alarm 23 is alarmed, and alarm 22 or 23 can feed back to alarm signal control electricity when alarming
Road, control circuit control shake table is stopped, to ensure the electric vibration table and product safety.As shown in broken line in fig. 5,
Vertical distance H3 '=90mm of existing electric vibration table microswitch；Between electric vibration table microswitch 19,20 after improvement
Vertical distance H3=100-102mm.Namely it is corresponding with moving-coil maximum displacement peak-to-peak value >=100mm, safety travel value also increases to
100-102mm.Ensure in big displacement stroke, experiment is normally carried out, reliably working.
In Fig. 1, displacement protecting device and drive circuit are not shown on rear side of stage body.In actual implementation, displacement protection
Device, spacing clapboard 13 and suspension support are each provided at the position on the corresponding top of moving-coil 1.
Through above-mentioned technological improvement, big displacement electric vibration table provided by the invention, according to JJG 948-1999《Digital electric
Dynamic vibration experiment vertification regulation》In calibrating index calibrating checking is carried out to it, effectively realize increase shake table stroke
Purpose, meet the growing experiment demand of the industries such as space flight and aviation.
It is described above, only it is the preferred embodiments of the present invention, any shape not is made to the structure and shape of the present invention
Limitation in formula, any simple modification that every technical spirit according to the present invention is made to above example, equivalent variations with
Modification, in the range of still falling within technical solution of the present invention.
Claims (5)
1. a kind of big displacement electric vibration table, including stage body, it is arranged in stage body that center is moving up and down to pass to alternating current
Moving-coil, around moving-coil set direct current exciting device, to moving-coil top carry out suspension strut suspension support, to moving-coil bottom
Portion carries out the flexible air-bag and moving-coil support base of load bearing support, the axis of guide for moving-coil be oriented to up and down, and driving electricity
Road；The moving-coil sets the skeleton of work top and the driving coil that is wound on skeleton to form by top, skeleton upper end with
It is integrally formed with ring week moving-coil gusset, corresponding with the moving-coil gusset, and multiple up limits of moving-coil gusset are fixedly installed on stage body
Position clapboard；The suspension support is the multiple U-shaped elasticity being connected between stage body and moving-coil top set around moving-coil
Arm；Excitation unit mainly includes the magnetic cylinder around moving-coil setting, the magnet exciting coil up and down in magnetic cylinder, is located at magnetic cylinder respectively
Top, the top crown and bottom crown of bottom；Moving-coil under working condition is moved up and down by setting stroke；It is characterized in that the guiding
Shaft length is than existing axis of guide extended length 10-12mm；The impact stroke of the clapboard and moving-coil gusset place-limited edge is more existing than it
There is impact stroke to lengthen 10-12mm；The spread length of the U-shaped elastic arm lengthens 10- than the spread length of existing U-shaped elastic arm
12mm。
A kind of 2. big displacement electric vibration table according to claim 1, it is characterised in that it is described it is existing guiding shaft length be
90mm；The existing impact stroke of the clapboard and moving-coil gusset place-limited edge is 90mm；The stretching, extension length of the existing U-shaped elastic arm
Spend for 90mm.
A kind of 3. big displacement electric vibration table according to claim 1 or 2, it is characterised in that every of the moving-coil gusset
Stiffener plate is made up of the infolding swash plate integrally connected at vertical plate and its top, and forms place-limited edge, the limit in bending place
Position rib reduces 5-6mm than existing place-limited edge, and infolding swash plate corresponds to downward；The clapboard above moving-coil gusset with it is described spacing
Rib alignment is packed on stage body, and the clapboard shortens 5-6mm than existing clapboard.
A kind of 4. big displacement electric vibration table according to claim 1 or 2, it is characterised in that provided with displacement protecting device,
It is included in the connected limited block in moving-coil top, it is corresponding with the limited block that support is provided with the stage body, two are fixedly mounted with thereon
Vertical distance is sets the microswitch of stroke, and the microswitch connects alarm respectively, and the limited block follower ring is two
Displacement between individual microswitch.
A kind of 5. big displacement electric vibration table according to claim 3, it is characterised in that provided with displacement protecting device, including
It is corresponding with the limited block that support is provided with the stage body in the limited block that moving-coil top is connected, two are fixedly mounted with thereon vertically
Distance is sets the microswitch of stroke, and the microswitch connects alarm respectively, and the limited block follower ring is micro- at two
Dynamic switch room displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710654104.8A CN107449579B (en) | 2017-08-03 | 2017-08-03 | A kind of big displacement electric vibration table |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710654104.8A CN107449579B (en) | 2017-08-03 | 2017-08-03 | A kind of big displacement electric vibration table |
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| CN107449579A true CN107449579A (en) | 2017-12-08 |
| CN107449579B CN107449579B (en) | 2019-11-05 |
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ID=60490306
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|---|---|---|---|
| CN201710654104.8A Active CN107449579B (en) | 2017-08-03 | 2017-08-03 | A kind of big displacement electric vibration table |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109783937A (en) * | 2019-01-15 | 2019-05-21 | 王旭东 | A kind of helicopter shooting vibration environment simple platform analogue system |
| CN110344966A (en) * | 2019-07-16 | 2019-10-18 | 北京强度环境研究所 | A kind of construction device and method of solid-rocket ground experiment free boundary |
| WO2023045391A1 (en) * | 2021-09-27 | 2023-03-30 | 苏州苏试试验集团股份有限公司 | Vibration test platform for automobile generator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109783937A (en) * | 2019-01-15 | 2019-05-21 | 王旭东 | A kind of helicopter shooting vibration environment simple platform analogue system |
| CN110344966A (en) * | 2019-07-16 | 2019-10-18 | 北京强度环境研究所 | A kind of construction device and method of solid-rocket ground experiment free boundary |
| CN110344966B (en) * | 2019-07-16 | 2021-01-05 | 北京强度环境研究所 | Device and method for constructing free boundary of solid rocket ground test |
| WO2023045391A1 (en) * | 2021-09-27 | 2023-03-30 | 苏州苏试试验集团股份有限公司 | Vibration test platform for automobile generator |
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| Publication number | Publication date |
|---|---|
| CN107449579B (en) | 2019-11-05 |
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Effective date of registration: 20200407 Address after: 300000 No. 9 North Third Street, West District, Tianjin Binhai New Area Development Zone Co-patentee after: QINGDAO AEROSPACE RELIABILITY MARINE EQUIPMENT QUALITY SUPERVISION AND INSPECTION TECHNOLOGY Co.,Ltd. Patentee after: TIANJIN AEROSPACE RELIA TECHNOLOGY Co.,Ltd. Co-patentee after: BEIJING INSTITUTE OF STRUCTURE & ENVIRONMENT ENGINEERING Address before: 300000 No. 9 North Third Street, West District, Tianjin Binhai New Area Development Zone Co-patentee before: BEIJING INSTITUTE OF STRUCTURE & ENVIRONMENT ENGINEERING Patentee before: TIANJIN AEROSPACE RELIA TECHNOLOGY Co.,Ltd. |
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