CN209727403U - A kind of more of broadband simultaneously pushes away pilot system - Google Patents
A kind of more of broadband simultaneously pushes away pilot system Download PDFInfo
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- CN209727403U CN209727403U CN201920771937.7U CN201920771937U CN209727403U CN 209727403 U CN209727403 U CN 209727403U CN 201920771937 U CN201920771937 U CN 201920771937U CN 209727403 U CN209727403 U CN 209727403U
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Abstract
The utility model discloses a kind of more of broadband and pilot system is pushed away, is related to vibration test field, including expanding table, shake table, control system, position detector, air-charging and air-discharging system, threaded rod, limited block and pedestal；By the way of multiple input single output, realize the synchronization of multiple shake table driving voltages, when power amplifier parameter is not much different, synchronizing and pushing away for shake table driving current may be implemented, guarantee the synchronism of each moving-coil displacement, reduce the moment of flexure that moving-coil is born, the needs of meeting broadband high thrust and push away vibration test；Each moving-coil is controlled using individual air-charging and air-discharging system, the effect of binding site sensor, is avoided the case where there are moving-coil overshoot section and less stress sections during testing, is guaranteed to be displaced between each moving-coil, and the moment of flexure that moving-coil is born is reduced；It will play the role of limit, support and anti-deflection when moving-coil gas leakage, sinking by threaded rod and limited block simultaneously to the sinking of expanding table, fixture, moving-coil, effectively shake table can be avoided to damage.
Description
Technical field
The utility model relates to vibration test field more particularly to a kind of more of broadband and push away pilot system.
Background technique
The vibration test of test specimen includes response measurement, dynamic characteristic parameters measurement, load identification and vibration environment test
Etc. contents, when carrying out the vibration test of big quality test specimen, the thrust of single shake table is insufficient, can not implement to test, existing skill
Double earthquakes or multi shaker are used in art and pushes away method and solves the problems, such as this, but the problem is that at more and are pushed away in test
There are the displacement of each jigging platform moving coil is asynchronous, moving-coil will be made to bear very big moment of flexure and even damaged.
Summary of the invention
The purpose of this utility model, which is that, to be devised a kind of more of broadband to solve the above-mentioned problems and pushes away test system
System.
The utility model achieves the above object through the following technical schemes:
A kind of more of broadband simultaneously pushes away pilot system, the vibration test for big quality test specimen, comprising:
Expanding table, test specimen are fixed on expanding table by fixture；
The moving-coil of at least two shake tables, multiple shake tables is connect with expanding table；
For controlling the identical control system of every shake table driving voltage, the signal end of control system respectively with multiple vibrations
The signal end connection of dynamic platform.
Further, control system includes controller and at least two sets of power amplifiers, the signal end of controller respectively with every set function
The signal end connection put, the signal end of a set of power amplifier are connect with the signal end of a shake table, and every set power amplifier receives controller
Control signal it is identical.
Further, control system further includes multiple acceleration transducers, and an acceleration sensor detects a shake table
The acceleration of moving-coil, the signal end of each acceleration transducer and the signal end of controller connect.
Further, more of broadband and pilot system is pushed away further include:
Multiple position detectors, a position detector are used to detect the position of a jigging platform moving coil；
Multiple air-charging and air-discharging systems for being used to keep jigging platform moving coil air pressure, an air-charging and air-discharging system is for controlling a vibration
The signal end of the air pressure of platform moving-coil, the signal end and sub- air-charging and air-discharging system that act on the position detector of the same shake table connects
It connects.
Further, each air-charging and air-discharging system includes air charging system and vent valve, the signal end of air charging system and vent valve
It is connect with the signal end of position detector.
Further, more of broadband and to push away pilot system further include more threaded rods and muti-piece limited block, each limit
Threaded hole is provided on block, a limited block is mounted on a threaded rod by threaded hole, is provided on expanding table multiple logical
The upper end in hole, a threaded rod passes through a through-hole, and limited block is located at the lower section of expanding table through-hole.
Further, more of broadband and to push away pilot system further include pedestal, is provided with multiple mounting holes on pedestal, and one
Shake table is fixedly mounted in a mounting hole of pedestal by connection structure, and the lower end of every threaded rod, which is fixed with pedestal, to be connected
It connects.
The utility model has the beneficial effects that: multiple acceleration transducers transmit signal to controller simultaneously, passing through
Controller output control signal, a control signal are divided into multichannel and are transferred to more set power amplifiers respectively, realize multiple input single output
Mode effectively realizes the synchronization of multiple shake table driving voltages, and when power amplifier parameter is not much different, shake table driving electricity may be implemented
Stream synchronizing and pushing away, and ensure that the synchronism of each jigging platform moving coil displacement, reduces the moment of flexure that moving-coil is born, 10Hz~
Control in 2000Hz broadband substantially can be realized the precision index of ± 3dB, meets broadband high thrust and pushes away vibration examination
The demand tested；Each moving-coil is controlled using individual air-charging and air-discharging system, the effect of binding site sensor, during avoiding test
The case where there are moving-coil overshoot section and less stress sections, ensure that and be displaced between each moving-coil, reduce the moment of flexure of moving-coil receiving；Lead to simultaneously
Cross threaded rod and limited block, moving-coil gas leakage, sink when, will to the sinking of expanding table, fixture, moving-coil play limit, support and
The effect of anti-deflection effectively can avoid shake table from damaging.
Detailed description of the invention
Fig. 1 is a kind of more of broadband of the utility model and the structural representation Fig. 1 for pushing away pilot system；
Fig. 2 is a kind of more of broadband of the utility model and the structural representation Fig. 2 for pushing away pilot system；
Fig. 3 is a kind of more of broadband of the utility model and the flow chart for pushing away control system in pilot system；
Fig. 4 is a kind of more of broadband of the utility model and the flow chart for pushing away air-charging and air-discharging system in pilot system；
Wherein corresponding appended drawing reference are as follows:
1- expanding table, 2- limited block, 3- threaded rod, 4- pedestal, 5- shake table.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described.Obviously, it is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be understood that term " on ", "lower", "inner", "outside", "left", "right" etc.
The orientation or positional relationship of instruction be based on the orientation or positional relationship shown in the drawings or the utility model product use when
The orientation or positional relationship that the orientation or positional relationship or those skilled in the art usually put usually understand, be only for
Convenient for description the utility model and simplify description, rather than the equipment of indication or suggestion meaning or element must have specifically
Orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " etc. are only used for distinguishing description, it is not understood to indicate or imply relatively important
Property.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, " setting ",
Terms such as " connections " shall be understood in a broad sense, for example, " connection " may be a fixed connection, may be a detachable connection, or one
Ground connection；It can be mechanical connection, be also possible to be electrically connected；Can be and be directly connected to, can also by between intermediary in succession
It connects, can be the connection inside two elements.For the ordinary skill in the art, can understand as the case may be
The concrete meaning of above-mentioned term in the present invention.
With reference to the accompanying drawing, specific embodiment of the present utility model is described in detail.
Embodiment 1, a kind of more of broadband simultaneously push away pilot system, the vibration test for big quality test specimen, comprising:
Expanding table 1, test specimen are fixed on expanding table 1 by fixture；
The moving-coil of at least two shake tables 5, multiple shake tables 5 is connect with expanding table 1；
For controlling the identical control system of 5 driving voltage of every shake table, the signal end of control system respectively with it is multiple
The signal end of shake table 5 connects.
As shown in figure 3, control system includes controller and at least two sets of power amplifiers, the signal end of controller respectively with every set function
The signal end connection put, the signal end of a set of power amplifier are connect with the signal end of a shake table 5, and every set power amplifier receives controller
Control signal it is identical.
As shown in figure 3, control system further includes multiple acceleration transducers, an acceleration sensor detects a shake table
The acceleration of 5 moving-coils, the signal end of each acceleration transducer and the signal end of controller connect.
Two shake tables 5 and two sets of power amplifiers are used in the present embodiment, acceleration transducer detects two 5 moving-coils of shake table
Acceleration, and transfer signals to controller, signal is divided into two difference by the control signal that controller generates by threeway
Two sets of power amplifiers are transferred to, realize the mode of multiple input single output, the synchronization of two 5 driving voltages of shake table is effectively realized, works as function
It puts parameter to be not much different, synchronizing and pushing away for 5 driving current of shake table may be implemented, ensure that two 5 moving-coil of shake table displacements
Synchronism, reduces the moment of flexure that moving-coil is born, and the control in 10Hz~2000Hz broadband substantially can be realized the essence of ± 3dB
Index is spent, the needs of meeting broadband high thrust and push away vibration test.
Embodiment 2, as shown in figure 4,
The present embodiment the difference from embodiment 1 is that: more of broadband simultaneously pushes away pilot system further include:
Multiple position detectors, a position detector are used to detect the position of 5 moving-coil of shake table；
Multiple air-charging and air-discharging systems for being used to keep 5 moving-coil air pressure of shake table, an air-charging and air-discharging system is for controlling a vibration
The air pressure of dynamic 5 moving-coil of platform, acts on the signal end of the position detector of the same shake table 5 and the signal end of sub- air-charging and air-discharging system
Connection.
As shown in figure 4, each air-charging and air-discharging system includes air charging system and vent valve, the signal end of air charging system and vent valve
It is connect with the signal end of position detector.
Each moving-coil uses individual air-charging and air-discharging system, controls the air pressure of moving-coil, and position detector detects first
To the position of corresponding moving-coil, the sub- air-charging and air-discharging system of corresponding moving-coil is then controlled, moving-coil is inflated or is deflated, is avoided
The case where there are moving-coil overshoot section and less stress sections during test, ensure that and be displaced between each moving-coil, reduce moving-coil receiving
Moment of flexure.
Embodiment 3, as shown in Figure 1 and Figure 2,
The present embodiment the difference from embodiment 1 is that: more of broadband and to push away pilot system further include more 3 Hes of threaded rod
Muti-piece limited block 2 is provided with threaded hole on each limited block 2, and a limited block 2 is mounted on a threaded rod 3 by threaded hole
On, multiple through-holes are provided on expanding table 1, the upper end of a threaded rod 3 passes through a through-hole, and it is logical that limited block 2 is located at expanding table 1
The lower section in hole.
By the way that multiple through-holes are arranged on expanding table 1, limited block 2 is threadedly coupled with threaded rod 3, and limited block 2 is mounted on
1 lower section of expanding table before test carries out, according to the actual situation, by adjusting the height of limited block 2, adjusts the height of expanding table 1,
When moving-coil gas leakage, sinking, limit, support and anti-deflection will be played the role of to the sinking of expanding table 1, fixture, moving-coil, it can
Shake table 5 is effectively avoided to damage.
Embodiment 4, as shown in Figure 1 and Figure 2,
The present embodiment and the difference of embodiment 3 are: more of broadband and to push away pilot system further include pedestal 4, on pedestal 4
Multiple mounting holes are provided with, a shake table 5 is fixedly mounted in a mounting hole of pedestal 4 by connection structure, every spiral shell
The lower end of rasp bar 3 is fixedly connected with pedestal 4.
It is arranged by pedestal 4 and shake table 5 is fixedly installed togather, making two shake tables 5 during exercise has preferably
Synchronism.
The limitation that the technical solution of the utility model is not limited to the above specific embodiments, all skills according to the present utility model
The technology deformation that art scheme is made, each falls within the protection scope of the utility model.
Claims (7)
1. a kind of more of broadband simultaneously pushes away pilot system, the vibration test for big quality test specimen characterized by comprising
Expanding table, test specimen are fixed on expanding table by fixture；
The moving-coil of at least two shake tables, multiple shake tables is connect with expanding table；
For controlling the identical control system of every shake table driving voltage, the signal end of control system respectively with multiple shake tables
Signal end connection.
2. more of a kind of broadband according to claim 1 simultaneously pushes away pilot system, which is characterized in that control system includes control
Device processed and at least two sets of power amplifiers, the signal end of controller are connect with the signal end of every set power amplifier respectively, the signal end of a set of power amplifier
It is connect with the signal end of a shake table, the control signal that every set power amplifier receives controller is identical.
3. more of a kind of broadband according to claim 2 simultaneously pushes away pilot system, which is characterized in that control system further includes
Multiple acceleration transducers, an acceleration sensor detect the acceleration of a jigging platform moving coil, each acceleration transducer
The connection of the signal end of signal end and controller.
4. more of a kind of broadband according to claim 1-3 simultaneously pushes away pilot system, which is characterized in that broadband
More and push away pilot system further include:
Multiple position detectors, a position detector are used to detect the position of a jigging platform moving coil；
Multiple air-charging and air-discharging systems for being used to keep jigging platform moving coil air pressure, an air-charging and air-discharging system are dynamic for controlling a shake table
The signal end of the air pressure of circle, the signal end and air-charging and air-discharging system that act on the position detector of the same shake table connects.
5. more of a kind of broadband according to claim 4 simultaneously pushes away pilot system, which is characterized in that each air-charging and air-discharging system
Including air charging system and vent valve, the signal end of air charging system and vent valve is connect with the signal end of position detector.
6. more of a kind of broadband according to claim 1 simultaneously pushes away pilot system, which is characterized in that more of broadband simultaneously pushes away
Pilot system further includes more threaded rods and muti-piece limited block, and threaded hole is provided on each limited block, and a limited block passes through
Threaded hole is mounted on a threaded rod, and multiple through-holes are provided on expanding table, and the upper end of a threaded rod passes through a through-hole,
Limited block is located at the lower section of expanding table through-hole.
7. more of a kind of broadband according to claim 6 simultaneously pushes away pilot system, which is characterized in that more of broadband simultaneously pushes away
Pilot system further includes pedestal, and multiple mounting holes are provided on pedestal, and a shake table is fixedly mounted on base by connection structure
In one mounting hole of seat, the lower end of every threaded rod is fixedly connected with pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920771937.7U CN209727403U (en) | 2019-05-27 | 2019-05-27 | A kind of more of broadband simultaneously pushes away pilot system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920771937.7U CN209727403U (en) | 2019-05-27 | 2019-05-27 | A kind of more of broadband simultaneously pushes away pilot system |
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| CN209727403U true CN209727403U (en) | 2019-12-03 |
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| CN201920771937.7U Active CN209727403U (en) | 2019-05-27 | 2019-05-27 | A kind of more of broadband simultaneously pushes away pilot system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057523A (en) * | 2019-05-27 | 2019-07-26 | 中国工程物理研究院总体工程研究所 | A kind of more of broadband simultaneously pushes away pilot system |
| CN113959662A (en) * | 2021-09-22 | 2022-01-21 | 天津航天瑞莱科技有限公司 | Vibration test device for launching separation of aircraft |
-
2019
- 2019-05-27 CN CN201920771937.7U patent/CN209727403U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057523A (en) * | 2019-05-27 | 2019-07-26 | 中国工程物理研究院总体工程研究所 | A kind of more of broadband simultaneously pushes away pilot system |
| CN113959662A (en) * | 2021-09-22 | 2022-01-21 | 天津航天瑞莱科技有限公司 | Vibration test device for launching separation of aircraft |
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