CN203725359U - Vibrostand moving-coil reverse bearing device and vibrostand comprising same - Google Patents
Vibrostand moving-coil reverse bearing device and vibrostand comprising same Download PDFInfo
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- CN203725359U CN203725359U CN201320755849.0U CN201320755849U CN203725359U CN 203725359 U CN203725359 U CN 203725359U CN 201320755849 U CN201320755849 U CN 201320755849U CN 203725359 U CN203725359 U CN 203725359U
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Abstract
The utility model relates to the vibration test technique, and particularly provides a vibrostand moving-coil reverse bearing device and a vibrostand comprising the same. The vibrostand moving-coil reverse bearing device is characterized by comprising a guide shaft (4), a guide shaft bearing (5), a moving coil (3), an upper flange (1.3) and a pressure-bearing spring. The guide shaft (4) is configured to pass through a vibrostand body (2) in the up-and-down direction and is capable of sliding relative to the vibrostand body (2) in the up-and-down direction by means of the guide shaft bearing (5). The lower end of the guide shaft (4) is provided with the moving coil (3) parallel to the vibrostand body (2). A load is configured to be arranged on a table top at the lower end of the moving coil (3). The upper flange (1.3) is fixedly arranged at the upper end of the guide shaft (4). The pressure-bearing spring is arranged between the upper flange (1.3) and the vibrostand body (2). The vibrostand provided by the utility model comprises the above vibrostand moving-coil reverse bearing device. According to the technical scheme of the utility model, the vibrostand is capable of vibrating either forwardly or in an upside-down manner as desired.
Description
Technical field
The utility model belongs to a kind of shake table and moving coil bearing device thereof, be specifically related to a kind of can forward, be inverted the vibration experiment of work and the moving-coil backward bearer device that this system is used.
Background technology
Electric vibration table is according to the vibration generating arrangement of electromagnetic induction principle design, as a kind of testing equipment that carries out the reliability tests such as product oscillation intensity and shock environmental test, electric vibration table and power amplifier, controller support the use reliability tests such as can completing sine, random, impact, thus the Vibration Condition of the true environment for use of analog equipment.
Electric vibration table stage body is generally made up of several parts such as magnet exciting coil, moving-coil, magnet, moving coil bearing device, the upper and lower guider of moving-coil, stage body vibration isolation air bag, supports.When work, magnet exciting coil passes into DC current, air gap place will produce stationary magnetic field, when the drive coil (moving-coil) that is positioned at air gap place is during by alternating current, moving-coil will be subject to alternation electric power-exciting force, this exciting force makes shake table moving component drive test specimen reciprocating, realizes the vibration of test specimen.
When shake table work, test specimen is installed on vibration table surface by fixture, in order to offset the shake table motion parts weight of (comprising load), make moving-coil table top in equilbrium position, shake table generally has bogey, to ensure that can adjust jigging platform moving coil table top by center support system after shake table installation load maintains equilbrium position.Conventional bogey comprises the structures such as film air bag, air spring at present.Shake table air spring bearing structure can be on top or bottom in the past, but all can only bear the unidirectional weight of forward (test specimen is on vibration table surface), and when this has determined shake table work, work top only can complete forward vibration test.In the time that shake table is inverted (180 ° of moving-coil table top upsets, test specimen is under vibration table surface), bearing system cannot ensure that shake table motion parts maintains equilbrium position, and shake table cannot be worked.
And some special testpieces are as hanger, when its real work in mounting state, to simulate the most really its Vibration Condition in laboratory, should make its installment state consistent with actual working state as far as possible, in the time that shake table carries out vibration test, test specimen need to adopt the similar mode that mounts, this just requires shake table to realize and is inverted vibration, shake table cannot be met by structural limitations and is inverted vibration test requirement at present, can only transfer by large-scale jig in order to realize the test of hanger series products, so on the one hand testing equipment is improved to requirement, the characteristics of mode of fixture will affect the test result of test specimen on the other hand.Therefore, be necessary to develop a kind of shake table and meet the test requirements document that this series products inversion is vibrated.
Utility model content
The purpose of this utility model is the test demand of being inverted vibration in order to meet some special test specimen, solve and transferred and carry out the high request of hanger series products test to equipment by large-scale jig in the past, reduce the impact of large-scale jig characteristics of mode on test specimen test result simultaneously, and further expand the range of application of shaking table system.The utility model provides a kind of shake table of being inverted work, and a kind of moving-coil backward bearer device design is provided.
The utility model solves the technical scheme that its technical problem adopts:
A kind of jigging platform moving coil backward bearer device, backward bearer jigging platform moving coil, wherein, comprising: the axis of guide, axis of guide bearing, moving-coil, upper flange and pressure-bearing spring; The axis of guide runs through shake table stage body on above-below direction, by axis of guide bearing, slides with respect to stage body at above-below direction; In axis of guide lower end, the moving-coil parallel with stage body is installed, the table top of moving-coil lower end is for installation load; In axis of guide upper end, fixed installation upper flange; Between upper flange and stage body, pressure-bearing spring is installed.
A kind of jigging platform moving coil backward bearer device as above, wherein, between moving-coil and stage body, installs pressure-bearing spring.
A kind of jigging platform moving coil backward bearer device as above, wherein, described pressure-bearing spring uses air spring.
A kind of jigging platform moving coil backward bearer device as above, wherein, described air spring is loop configuration or comprises multiple plain cylindrical form air springs, around axis of guide setting.
A kind of shake table, wherein, comprises jigging platform moving coil backward bearer device as above.
Shake table as above, wherein, stage body is installed on support, and can in vertical plane, rotate relative to support, between stage body and support, stage body backward bearer spring and stage body forward bearing spring is set.
Shake table as above, wherein, comprise stage body upper flange, stage body lower flange at stage body lateral surface, in support inner side, comprise flange in stage body, in support, flange is between stage body upper flange and stage body lower flange, in stage body upper flange and support between flange, stage body forward bearing spring is set, in stage body lower flange and support, between flange, stage body backward bearer spring is set.
The utility model is on the original principles and structure of shake table basis, adopt a kind of new structural design thinking, change jigging platform moving coil, the axis of guide, the version of fan housing etc., the moving-coil backward bearer device of design shake table, this device adopts single or the how bent annular air spring of specific customization (also can adopt two or more normal air springs uniform, but identical installing space bearing capacity will reduce) as main load-carrying unit, further add large bearing capacity in order not affect under the condition of stage body magnetic field intensity, the installation site of this device is different from the bogey that was installed on stage body bottom in the past, it is installed on stage body bottom position, in order to meet moving-coil backward bearer device installation requirement, fan housing adopts loop configuration.The structural change of this shake table does not affect shake table stage body top forward bogey is installed, and makes shake table can meet forward simultaneously and is inverted vibration requirement.Backward bearer device also can be only installed according to requirements, only realize and be inverted vibrating function.
It is simple, reliable that this structure is used, maintenance, debugging are conveniently, do not affecting under the performance indications prerequisites such as magnetic field, can meet and be inverted vibration job requirement, the moving-coil backward bearer device and the mounting structure that wherein use have more large bearing capacity than ordinary construction, and the shake table of developing can complete the inversion vibration test of System for Large-scale Specimen.
Limited by equipment and technical merit, there is deviation in research technique and actual service condition that some hanger class test specimens adopt.In recent years, along with to the improving constantly of test specimen reliability requirement, vibration environment when increasing test specimen requires to simulate more really workpiece actual vibration, and some of them mount type component and have therefore proposed user demand to being inverted shake table.The shake table of this form or structure is blank at home at present.
The beneficial effects of the utility model are, are not affecting under the key property index prerequisites such as shake table magnetic field, by changing the means such as shake table structure, design jigging platform moving coil backward bearer device, make shake table meet System for Large-scale Specimen and are inverted vibration job requirement; Meanwhile, also can make as required shake table both can vibrate by forward, can be inverted again vibration, further to improve shake table range of application and test capability.
Brief description of the drawings
Fig. 1 (a) moving-coil backward bearer apparatus structure, (b) is annular air spring cross sectional representation, is (c) four normal air spring cross sectional representation;
The shake table structure of Fig. 2 inversion work;
The shake table structure that Fig. 3 can be inverted, can forward work.
Wherein moving-coil backward bearer device is installed on stage body bottom, and in Fig. 1, Fig. 2, stage body is illustrated as to be inverted and puts, and in Fig. 3, stage body is illustrated as forward and puts.
In Fig. 1, upper crimping 1 1.5 lower flange 1.6 air valve 2 stage body 3 moving-coil 4 axis of guide 4.1 axis of guide pilot nail 4.2 axis of guide locking nut 5 guide bearings of 1.1 carrying air spring 1.2a upper crimping 2 1.3 upper flange 1.4a Rolldown hem 1 1.4b of Rolldown hem 2 1.2b
In Fig. 2,1 moving-coil backward bearer device 2 stage body 3 moving-coil 4 axis of guide 5 guide bearing 6 bottom 7.1 stage body backward bearer spring 7.2 stage body forward bearing spring 8 support 9 fixtures and test specimen 10 heightening brackets
In Fig. 3, flange in 1 moving-coil backward bearer device 2 stage body 3 moving-coil 4 axis of guide 5 guide bearing 6 bottom 7.1 stage body backward bearer spring 7.2 stage body forward bearing spring 8 support 9 fixtures and test specimen 10 heightening bracket 11 moving-coil forward bogey 20 stage body upper flange 21 stage body lower flange 22 supports
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described further.
1, moving-coil backward bearer device concrete scheme
See Fig. 1, moving-coil backward bearer device mainly comprises annular air spring 1.1, upper crimping 2(1.2b), upper crimping 1(1.4b), Rolldown hem 2(1.2a), Rolldown hem 1(1.4a), upper flange 1.3, lower flange 1.5 and hold-down screw composition.
Upper crimping 2(1.2b), upper crimping 1(1.4b) be connected Rolldown hem 2(1.2a with upper flange 1.3), Rolldown hem 1(1.4a) be connected with lower flange 1.5, to ensure the sealing of air spring; Upper flange 1.3 is connected with moving-coil 3 by the axis of guide 4, and lower flange 1.5 is fixed as one with the stage body 2 of shake table.Adjust the axis of guide 4 and can freely under the guide effect of bearing 5, do rectilinear motion by ensureing machining accuracy and installation accuracy.When work, load is arranged on jigging platform moving coil 3 table tops, adjusts adapt air spring pressure ensure that jigging platform moving coil is in equilbrium position by air valve 1.6.
Wherein air spring can adopt hollow ring air spring, see figure A-A(annular air spring), according to carrying size requirements and stage body size specific customization, can be single or how bent air spring, to ensure shake table correlated performance, when requirement for bearing capacity little, when installing space is larger, also can adopt the uniform realization carrying of two or more normal air springs, see tetra-normal air springs of figure A-A(), by analysis, two kinds of different schemes comparisons while illustrating identical installing space, employing annular air spring load is 1.65 times of four normal air spring load sizes.
The design of moving-coil backward bearer device mainly comprises annular air spring (or two above uniform normal air springs) structure, air spring sealing means, air spring type of attachment, installation site, mounting structure, the mounting means design of backward bearer device on shake table.
2, adopt the be inverted operational vibration platform of moving-coil backward bearer device
See Fig. 2, Fig. 3, the stage body of shake table turns over turnback, and test specimen erecting bed faces down, and shake table is installed on heightening bracket 10, to ensure table top reserved larger space installation test specimen below.Moving-coil backward bearer device 1 is arranged on the center of shake table stage body 2 bottoms, need to improve design to the structure that affects moving-coil backward bearer device, and stage body structure remains unchanged substantially.Wherein shake table bottom 6 is designed to annular, so that stage body 2 bottom centre positions reserve the space that moving-coil backward bearer device is installed; The center specialized designs hollow hole of jigging platform moving coil 3, can pass from moving-coil 3 centers the jigging platform moving coil axis of guide 4, and leads by guide bearing 5, and one end is connected with jigging platform moving coil 3, and the other end is connected with the upper flange 1.3 of moving-coil backward bearer device 1.When work, test specimen 9 can be lifted on by the moving-coil connecting screw hole 3.1 on moving-coil 3 work top of moving-coil 3, now the axis of guide 4 is subject to downward pulling force, the position of the air valve 1.6 inflation/deflation capable of regulating moving-coils 3 by moving-coil backward bearer device 1 is to equilbrium position, thereby realizes the backward bearer of moving-coil.Have the shake table of vibration isolation function for stage body, realize the inversion vibration of shake table, stage body backward bearer spring 7.1 must be installed, the duty of Fig. 2 can realize shake table and be inverted vibration.
Specific implementation is: comprise stage body upper flange 20, stage body lower flange 21 at stage body 2 lateral surfaces, in support 8 inner sides, comprise flange 22 in support, in support, flange is between stage body upper flange 20 and stage body lower flange 21, in stage body upper flange 20 and support between flange 22, stage body forward bearing spring 7.2 is set, in stage body lower flange 21 and support, between flange 22, stage body backward bearer spring 7.1 is set.
See Fig. 3, in the time that shake table is installed moving-coil backward bearer device 1, on moving-coil 3 tops, moving-coil forward bogey 11 is installed, jigging platform moving coil just will have, backward bearer function, this shake table will have forward vibration simultaneously and be inverted the function of vibrating, can by the air spring of moving-coil forward bogey 11 and moving-coil backward bearer device 1 is filled respectively lose heart make jigging platform moving coil can be respectively in the time bearing two rightabout load in equilbrium position, while needing to carry out forward vibration test, by emptying the gas of the air spring 1.1 of moving-coil backward bearer device 1 reduction pressure, the inflation/deflation of the air spring by moving-coil forward bogey 11 is adjusted moving-coil 3 to equilbrium position, realize forward vibration, need be inverted vibration test time, the air spring gas of moving-coil forward bogey 11 is emptying, and the inflation/deflation of the air spring 1.1 by moving-coil backward bearer device 1 is adjusted moving-coil 3 to equilbrium position, realizes and is inverted vibration.
Adopt the be inverted operational vibration platform design of moving-coil backward bearer device mainly to comprise: connected mode, the fan housing structure etc. of heightening bracket, moving-coil structure, axis of guide structure, the axis of guide and moving-coil backward bearer device and moving-coil, wherein moving-coil backward bearer device comprises the annular air spring, upper flange, lower flange, upper crimping 1, upper crimping 2, Rolldown hem 1, Rolldown hem 2, air valve of single or many songs etc.
Above embodiment of the present utility model is explained in detail, above-mentioned embodiment is only optimum embodiment of the present utility model, but the utility model is not limited to above-described embodiment, in the ken possessing those of ordinary skill in the art, can also under the prerequisite that does not depart from the utility model aim, make various variations.
For example, although in the present embodiment, select air spring,, select common stage clip etc. also not depart from purport of the present utility model.
In the time realizing the positive and negative two-way carrying of shake table stage body, also not necessarily to adopt structure described in the present embodiment, for example, a flange can also be set in stage body side, at support, two flanges are set, as long as can all can realize the support to stage body under positive and negative two states.
Claims (9)
1. a jigging platform moving coil backward bearer device, backward bearer jigging platform moving coil, is characterized in that, comprising: the axis of guide (4), axis of guide bearing (5), moving-coil (3), upper flange (1.3) and pressure-bearing spring; The axis of guide (4) runs through shake table stage body (2) on above-below direction, by axis of guide bearing (5), slides with respect to stage body (2) at above-below direction; In the axis of guide (4) lower end, the moving-coil (3) parallel with stage body (2) is installed, the table top of moving-coil (3) lower end is for installation load; In the axis of guide (4) upper end, fixed installation upper flange (1.3); Between upper flange (1.3) and stage body (2), pressure-bearing spring is installed.
2. a kind of jigging platform moving coil backward bearer device as claimed in claim 1, is characterized in that, between moving-coil (3) and stage body (2), pressure-bearing spring is installed.
3. a kind of jigging platform moving coil backward bearer device as described in claim 1 or 2, is characterized in that, described pressure-bearing spring uses air spring (1.1).
4. a kind of jigging platform moving coil backward bearer device as claimed in claim 3, is characterized in that, described air spring (1.1) is for loop configuration or comprise multiple plain cylindrical form air springs, arranges around the axis of guide (4).
5. a shake table, is characterized in that, comprises the jigging platform moving coil backward bearer device as described in any one in claim 1,2,4.
6. shake table as claimed in claim 5, it is characterized in that, stage body (2) is installed on support (8), and can in vertical plane, rotate relative to support (8), between stage body (2) and support (8), stage body backward bearer spring (7.1) and stage body forward bearing spring (7.2) are set.
7. shake table as claimed in claim 5, it is characterized in that, comprise stage body upper flange (20), stage body lower flange (21) at stage body (2) lateral surface, in support (8) inner side, comprise flange in support (22), in support, flange is positioned between stage body upper flange (20) and stage body lower flange (21), in stage body upper flange (20) and support between flange (22), stage body forward bearing spring (7.2) is set, in stage body lower flange (21) and support, between flange (22), stage body backward bearer spring (7.1) is set.
8. a shake table, is characterized in that, comprises jigging platform moving coil backward bearer device as claimed in claim 3.
9. shake table as claimed in claim 8, it is characterized in that, comprise stage body upper flange (20), stage body lower flange (21) at stage body (2) lateral surface, in support (8) inner side, comprise flange in support (22), in support, flange is positioned between stage body upper flange (20) and stage body lower flange (21), in stage body upper flange (20) and support between flange (22), stage body forward bearing spring (7.2) is set, in stage body lower flange (21) and support, between flange (22), stage body backward bearer spring (7.1) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320755849.0U CN203725359U (en) | 2013-11-25 | 2013-11-25 | Vibrostand moving-coil reverse bearing device and vibrostand comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320755849.0U CN203725359U (en) | 2013-11-25 | 2013-11-25 | Vibrostand moving-coil reverse bearing device and vibrostand comprising same |
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| Publication Number | Publication Date |
|---|---|
| CN203725359U true CN203725359U (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320755849.0U Withdrawn - After Issue CN203725359U (en) | 2013-11-25 | 2013-11-25 | Vibrostand moving-coil reverse bearing device and vibrostand comprising same |
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| Country | Link |
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| CN (1) | CN203725359U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104646261B (en) * | 2013-11-25 | 2017-11-28 | 天津航天瑞莱科技有限公司 | A kind of jigging platform moving coil backward bearer device and the shake table comprising this device |
| CN113834623A (en) * | 2021-11-01 | 2021-12-24 | 苏州韦博试验仪器有限公司 | Long-stroke horizontal vibration test bed |
-
2013
- 2013-11-25 CN CN201320755849.0U patent/CN203725359U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104646261B (en) * | 2013-11-25 | 2017-11-28 | 天津航天瑞莱科技有限公司 | A kind of jigging platform moving coil backward bearer device and the shake table comprising this device |
| CN113834623A (en) * | 2021-11-01 | 2021-12-24 | 苏州韦博试验仪器有限公司 | Long-stroke horizontal vibration test bed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140723 Effective date of abandoning: 20171128 |