CN206583592U - A kind of vibration testing device - Google Patents
A kind of vibration testing device Download PDFInfo
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- CN206583592U CN206583592U CN201720243940.2U CN201720243940U CN206583592U CN 206583592 U CN206583592 U CN 206583592U CN 201720243940 U CN201720243940 U CN 201720243940U CN 206583592 U CN206583592 U CN 206583592U
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Abstract
The utility model is related to ground vibration environmental test technical field, more particularly to a kind of vibration testing device, it is included in the first vertical Drive assembly and the second vertical Drive assembly axially vertically disposed in same level, first vertical Drive assembly and the second vertical Drive assembly are connected by the first termination frock and the second termination frock with the horizontally disposed horizontal drive component in two axial directions respectively, the installation center line formed between first termination frock and the second termination frock is overlapped with the axis of testpieces, and the axis of two horizontal drive components is vertical with installation center line；First vertical Drive assembly includes the first shake table and biliquid pressure ball head, one end of biliquid pressure ball head is connected with the first shake table, the other end is connected with the first termination frock, second vertical Drive assembly includes the second shake table and first single hydraulic pressure bulb, one end of first single hydraulic pressure bulb is connected with the second shake table, and the other end is connected with the second termination frock.
Description
Technical field
The present invention relates to ground vibration environmental test technical field, more particularly to a kind of vibration testing device.
Background technology
Some large scale system level product such as guided missiles, carrier rocket can be born stronger during transport and use at present
Vibration environment.Therefore, in the development stage, in order that product meets vibration environment adaptability demand, it is necessary to carry out ground vibration
Experiment.
The final purpose of Ground Vibration Test is that realistically analog equipment is expected the vibration environment of experience as far as possible.At present,
System-level vibration test is general to be carried out on single shaft vibration experiment.And in fact, the Complex Structural System such as Aero-Space is in fortune
Residing vibration environment is all polyaxial during defeated and use and intercouples.Some products are particularly the member to orientation-sensitive
Part is such as used to response output of the group under single shaft vibration test and has different with indeed vibrations environment, and single shaft vibration can not expire
The demand of foot simulation true environment.
Multiaxis excitation can not only meet the thrust requirements of large product vibration test, and can be with more life-like
Actual vibration environment is simulated, product bug launching efficiency is improved, the latent defect of more effective exposing product reaches vibration environment
Examine purpose.
At present, domestic existing many units possess the ability for carrying out multiaxis excitation vibration test, the experiment peace of use
Dress method is basically identical, and by taking two axles, 4 excited vibration experiments as an example, it is as follows that it tests installation system：Two shake tables are put vertically
Put, two other shake table horizontal positioned, each shake table connects the hydraulic pressure bulb of a decoupling, totally 4 by adaptor
Individual hydraulic pressure bulb；Two test tools are connected to two of testpieces excitation points, and (slender bodies testpieces is generally testpieces
Two ends)；4 hydraulic pressure bulbs distinguish the response position of connection experiment fixture；Suspension apparatus is finally installed.The test method can
The basic need for implementing two axles, 4 excited vibration experiments is met, but it is disadvantageous in that the mounting means can not limit examination
Rotation of the part along long axis direction (referred to as axially) is tested, causes the direction of motion of testpieces excitation point to deviate shake table excitation orientation,
While many excitation control difficulty are added, control accuracy is reduced, the validity of result of the test is had a strong impact on.
The content of the invention
(1) technical problem to be solved
The technical problem to be solved in the present invention be solve existing vibration testing device can not limit assay part side vertically
To rotation, cause testpieces excitation point the direction of motion deviate shake table excitation orientation, reduce control accuracy, have a strong impact on
The problem of result of the test validity.
(2) technical scheme
In order to solve the above-mentioned technical problem, the invention provides a kind of vibration testing device, it is included in same level
Axially vertically disposed the first vertical Drive assembly and the second vertical Drive assembly, the first vertical Drive assembly and described
Two vertical Drive assemblies pass through the first termination frock and the second termination frock and two horizontally disposed horizontal drives in axial direction respectively
Component is connected, the installation center line and the axis of testpieces formed between first termination frock and second termination frock
Overlap, and the axis of two horizontal drive components is vertical with the installation center line；The first vertical Drive assembly
Including the first shake table and biliquid pressure ball head, one end of the biliquid pressure ball head is connected with first shake table, the other end with
First termination frock connection, the second vertical Drive assembly includes the second shake table and first single hydraulic pressure bulb, described
One end of first single hydraulic pressure bulb is connected with second shake table, and the other end is connected with second termination frock.
Wherein, two horizontal drive components include the 3rd shake table and second single hydraulic pressure bulb, two described the
One end of two single hydraulic pressure bulbs be connected with two the 3rd shake tables respectively, the other end and respectively with first termination frock
With the connection of second termination frock.
Wherein, in addition to suspension, the suspension includes suspention beam and two groups of stretch cords, and described first vertical swashs
Encourage component and the described second vertical Drive assembly and be respectively positioned on the lower section of the suspention beam, one end of stretch cord described in one group with it is described
Suspention beam is connected, and the other end is connected with first termination frock, and one end of stretch cord described in another group connects with the suspention beam
Connect, the other end is connected with second termination frock.
Wherein, the biliquid pressure ball head is connected with first shake table by double bulb pinboards.
Wherein, described first single hydraulic pressure bulb and second shake table, described second single hydraulic pressure bulb and the described 3rd
Shake table is connected by single bulb pinboard.
Wherein, the biliquid pressure ball head, described first single hydraulic pressure bulb and described second single hydraulic pressure bulb are two-sided liquid
Pressure ball head.
Wherein, the suspention beam is " # " font portal frame.
(3) beneficial effect
The above-mentioned technical proposal of the present invention has the following advantages that：The present invention relates to the slender bodies infrastructure product such as large-scale guided missile
Novel test device needed for surface vibration experiment, for implementing large-scale two axle of slender bodies infrastructure product, 4 excited vibration experiments.
Two horizontally disposed vertical Drive assemblies and two horizontal drive components being vertically arranged respectively by the first termination frock and
The two ends connection of second termination frock and testpieces, testpieces horizontal positioned, axis keeps parallel to the ground, and the present invention improves existing
There is each shake table in two axles, 4 points of excitation experiment installation systems that using a single hydraulic pressure bulb mounting means, 2 are pacified side by side
Single hydraulic pressure bulb composition biliquid pressure ball head of dress is connected with the shake table in vertical vibrating direction set on horizontal plane, separately
One single hydraulic pressure bulb of shake table connection in vertical vibrating direction, collectively constitutes " supported at three point " form, testpieces barycenter exists
The delta-shaped region surrounded all the time in biliquid pressure ball head with first single these three hydraulic pressure bulbs of hydraulic pressure bulb in vibration processes
It is interior, the kinetic stability of testpieces is added, and then reduce vibration test control difficulty.When testpieces quality is bigger, vibration examination
Test magnitude it is higher when advantage it is more obvious.The characteristics of making full use of the displacement constraint of hydraulic pressure bulb axial direction, biliquid pressure ball head is limited carefully
The axial rotation that long body testpieces is produced in motion process, improves stability of the test products in vibration processes, and then
Reduce controlling test difficulty, it is to avoid the feedback signal that the response direction deviation shake table excitation orientation of testpieces excitation point is brought
" distortion ", improves vibration control precision.
Except it is described above present invention solves the technical problem that, constitute technical scheme technical characteristic and have this
Outside the advantage that the technical characteristic of a little technical schemes is brought, what other technical characteristics of the invention and these technical characteristics were brought
Advantage, will be further illustrated with reference to accompanying drawing.
Brief description of the drawings
Fig. 1 is the structural representation of vibration testing device of the embodiment of the present invention.
In figure：1：First vertical Drive assembly；2：Second vertical Drive assembly；3：Horizontal drive component；4：First termination
Frock；5：Second termination frock；6：Testpieces；7：Suspension；8：Double bulb pinboards；9：Single bulb pinboard；11：First
Shake table；12：Biliquid pressure ball head；21：Second shake table；22：First single hydraulic pressure bulb；31：3rd shake table；32：Second is single
Hydraulic pressure bulb；71：Suspention beam；72：Stretch cord.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained on the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
In addition, in the description of the invention, unless otherwise indicated, " multiple ", " many ", " multigroup " be meant that two or
Two or more, " several ", " some ", " some groups " are meant that one or more.
As shown in figure 1, vibration testing device provided in an embodiment of the present invention, is included in same level and axially sets vertically
The the first vertical Drive assembly 2 of vertical Drive assembly 1 and second put, the first vertical Drive assembly 2 of vertical Drive assembly 1 and second
It is connected respectively by the first termination frock 4 and the second termination frock 5 with the horizontally disposed horizontal drive component 3 in two axial directions, the
The installation center line formed between one termination frock 4 and the second termination frock 5 is overlapped with the axis of testpieces 6, and two levels
The axis of Drive assembly 3 is vertical with installation center line；First vertical Drive assembly 1 includes the first shake table 11 and biliquid pressure ball
First 12, one end of biliquid pressure ball head 12 is connected with the first shake table 11, the other end of biliquid pressure ball head 12 and the first termination frock 4
Connection, the second vertical Drive assembly 2 includes the second shake table 21 and first single hydraulic pressure bulb 22, the one of first single hydraulic pressure bulb 22
End is connected with the second shake table 21, and the second termination of other end frock 5 of first single hydraulic pressure bulb 22 is connected.
The present invention relates to the novel test device needed for the slender bodies infrastructure product Ground Vibration Test such as large-scale guided missile, it is used for
Implement large-scale two axle of slender bodies infrastructure product, 4 excited vibration experiments.Two horizontally disposed vertical Drive assemblies and two are perpendicular
The horizontal drive component directly set is connected by the two ends of the first termination frock and the second termination frock and testpieces respectively, experiment
Part horizontal positioned, axis keeps parallel to the ground, and the present invention is improved each to shake in existing two axles, 4 points of excitation experiment installation systems
2 single hydraulic pressure bulbs being mounted side by side are constituted biliquid pressure ball head and level by dynamic platform using a single hydraulic pressure bulb mounting means
The shake table in vertical vibrating direction set on face is connected, another single liquid of shake table connection in vertical vibrating direction
Pressure ball head, collectively constitutes " supported at three point " form, and testpieces barycenter is in biliquid pressure ball head and first all the time in vibration processes
In the delta-shaped region that these three hydraulic pressure bulbs of single hydraulic pressure bulb are surrounded, the kinetic stability of testpieces is added, and then drop
Low vibration controlling test difficulty.When testpieces quality is bigger, vibration test magnitude is higher, advantage is more obvious.Make full use of hydraulic pressure
The characteristics of bulb axial direction displacement constraint, biliquid pressure ball head limits the axial direction turn that slender bodies testpieces is produced in motion process
It is dynamic, stability of the test products in vibration processes is improved, and then reduce controlling test difficulty, it is to avoid testpieces excitation point
Response direction deviate the feedback signal " distortion " brought of shake table excitation orientation, improve vibration control precision.
Specifically, two horizontal drive components 3 include the 3rd shake table 31 and second single hydraulic pressure bulb 32, two second
One end of single hydraulic pressure bulb 32 is connected with two the 3rd shake tables 31 respectively, and the other end of two second single hydraulic pressure bulbs 32 is with dividing
It is not connected with the first termination frock 4 and the second termination frock 5.First shake table and the second shake table place the vertical side of offer vertically
To excitation, the 3rd shake table and the 4th shake table horizontal positioned provide the excitation of horizontal direction, according to testpieces size adjusting
Four shake tables are to relevant position, and testpieces is connected to biliquid pressure ball head by the first termination frock and the second termination frock respectively
On each single hydraulic pressure bulb, i.e., the present invention includes four shake tables and five hydraulic pressure bulbs altogether.
Further, vibration testing device of the present invention also includes suspension 7, and suspension 7 includes suspention beam 71 and two
Group stretch cord 72, the first vertical Drive assembly 2 of vertical Drive assembly 1 and second is respectively positioned on the lower section of suspention beam 71, one group of elastic force
One end of rope 72 is connected with suspention beam 71, and the other end of this group of stretch cord 72 is connected with the first termination frock 4, another group of stretch cord
72 one end is connected with suspention beam 71, and the other end of this group of stretch cord 72 is connected with the second termination frock 5.Suspended in midair in the present embodiment
Stretch cord has two groups, and every group has two stretch cords, and every stretch cord one end is fixed in hanging beam, other end connection first
Termination frock or the second termination frock.Testpieces is suspended in suspention beam with termination frock by stretch cord, and vibration test starts
Before, adjustment stretch cord length to testpieces is in equilbrium position, while can also be by adjusting the less hydraulic pressure bulb institute of stretch cord
The pressure received, when vibration test stops, suspension can make testpieces return back to original equilbrium position.
Wherein, biliquid pressure ball head 12 is connected with the first shake table 11 by double bulb pinboards 8.Wherein, first single hydraulic pressure
Bulb 22 is connected with second 21, second single hydraulic pressure bulb 32 of shake table with the 3rd shake table 31 by single bulb pinboard 9.The
One shake table connects biliquid pressure ball head by double bulb pinboards, and the second shake table is connected first singly by single bulb fishplate bar
Hydraulic pressure bulb, the 3rd shake table fixes second single hydraulic pressure bulb by single hydraulic pressure bulb pinboard.
Wherein, the end of testpieces 6 of the first termination frock 4 connection is than the end of testpieces 6 that the second termination frock 5 is connected
Quality is big.It is preferred that, the first termination frock as big end frock, the second termination frock as small end frock, biliquid pressure ball head with
Big end frock connection, larger one end of support testpieces quality, while being conducive to transmission to vibrate, it is ensured that the position of testpieces
It is stable, preferably avoid testpieces axial-rotation.First termination frock is manufactured with the second termination frock using casting aluminium material, with
Ensure frock rigidity and vibration transmissibility.
Wherein, the single hydraulic pressure bulb 32 of the single hydraulic pressure bulb 22 and second of biliquid pressure ball head 12, first is two-sided hydraulic pressure bulb.
Wherein, suspention beam 71 is " # " font portal frame.Suspention beam can also use " # " font portal frame, and stretch cord is using high
Intensity elastic string, elastic string intrinsic frequency is no more than 5Hz.
In use, on testpieces install sensor, by sensor measure line be connected with control system and measuring system.
It is as follows that the step of two axles, 4 excited vibrations are tested is carried out using the present invention：
S1：Testpieces is installed；
S2：The install sensor on testpieces, and connected with control system and measuring system；
S3：Open shake table, vibrating table amplifier, controller and data acquisition equipment；
S4：Controller difference output drive signal gives 4 vibrating table amplifiers, and power amplifier driving shake table is produced to shake according to default
The reciprocating motion of dynamic spectral pattern；
S5：Collection vibration response signal, and feed back to control system in real time；
S6：According to feedback signal, real-time Correction and Control signal, until reaching vibration control required precision；
S7：Vibration test reaches the scheduled time, and vibration test terminates.
In summary, the present invention relates to the new test needed for the slender bodies infrastructure product Ground Vibration Test such as large-scale guided missile
Device, for implementing large-scale two axle of slender bodies infrastructure product, 4 excited vibration experiments.Two horizontally disposed vertical excitation groups
The horizontal drive component that part and two are vertically arranged passes through the two of the first termination frock and the second termination frock and testpieces respectively
End connection, testpieces horizontal positioned, axis keeps parallel to the ground, and the present invention improves existing two axles, 4 points of excitation experiments and installs system
2 single hydraulic pressure bulbs being mounted side by side are constituted Double-hydraulic by each shake table using a single hydraulic pressure bulb mounting means in system
Bulb is connected with the shake table in vertical vibrating direction set on horizontal plane, another vibration in vertical vibrating direction
The single hydraulic pressure bulb of platform connection, collectively constitutes " supported at three point " form, and testpieces barycenter is in Double-hydraulic all the time in vibration processes
In the delta-shaped region that bulb and first single these three hydraulic pressure bulbs of hydraulic pressure bulb are surrounded, the motion stabilization of testpieces is added
Property, and then reduce vibration test control difficulty.When testpieces quality is bigger, vibration test magnitude is higher, advantage is more obvious.Fill
The characteristics of dividing displacement constraint axial using hydraulic pressure bulb, biliquid pressure ball head limits slender bodies testpieces and produced in motion process
Axial rotation, improve stability of the test products in vibration processes, and then reduce controlling test difficulty, it is to avoid experiment
The feedback signal " distortion " that shake table excitation orientation is brought is deviateed in the response direction of part excitation point, improves vibration control precision.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (7)
1. a kind of vibration testing device, it is characterised in that：It is included in same level axially vertically disposed first vertical to swash
Component and the second vertical Drive assembly are encouraged, the first vertical Drive assembly and the second vertical Drive assembly pass through respectively
One termination frock and the second termination frock are connected with the horizontally disposed horizontal drive component in two axial directions, first termination frock
The installation center line formed between the frock of second termination is overlapped with the axis of testpieces, and two horizontal drive groups
The axis of part is vertical with the installation center line；The first vertical Drive assembly includes the first shake table and biliquid pressure ball
Head, one end of the biliquid pressure ball head is connected with first shake table, and the other end is connected with first termination frock, described
Second vertical Drive assembly includes the second shake table and first single hydraulic pressure bulb, one end of described first single hydraulic pressure bulb with it is described
Second shake table is connected, and the other end is connected with second termination frock.
2. vibration testing device according to claim 1, it is characterised in that：Two horizontal drive components include the
Three shake tables and second single hydraulic pressure bulb, one end of two described second single hydraulic pressure bulbs respectively with two the 3rd shake tables
Connection, the other end is connected with first termination frock and second termination frock respectively.
3. vibration testing device according to claim 1, it is characterised in that：Also include suspension, the suspension
Including suspention beam and two groups of stretch cords, the first vertical Drive assembly is respectively positioned on described outstanding with the described second vertical Drive assembly
The lower section of hanging beam, one end of stretch cord is connected with the suspention beam described in one group, and the other end is connected with first termination frock,
One end of stretch cord is connected with the suspention beam described in another group, and the other end is connected with second termination frock.
4. vibration testing device according to claim 1, it is characterised in that：The biliquid pressure ball head and the described first vibration
Platform is connected by double bulb pinboards.
5. vibration testing device according to claim 2, it is characterised in that：Described first single hydraulic pressure bulb and described second
Shake table, described second single hydraulic pressure bulb are connected with the 3rd shake table by single bulb pinboard.
6. vibration testing device according to claim 5, it is characterised in that：The biliquid pressure ball head, described first single liquid
Pressure ball head is two-sided hydraulic pressure bulb with described second single hydraulic pressure bulb.
7. vibration testing device according to claim 3, it is characterised in that：The suspention beam is " # " font portal frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720243940.2U CN206583592U (en) | 2017-03-14 | 2017-03-14 | A kind of vibration testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720243940.2U CN206583592U (en) | 2017-03-14 | 2017-03-14 | A kind of vibration testing device |
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| CN206583592U true CN206583592U (en) | 2017-10-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768771A (en) * | 2017-03-14 | 2017-05-31 | 北京强度环境研究所 | A kind of vibration testing device |
| CN114136572A (en) * | 2021-11-29 | 2022-03-04 | 中车青岛四方机车车辆股份有限公司 | Test vibration tool, vehicle equipment fatigue test device and method |
-
2017
- 2017-03-14 CN CN201720243940.2U patent/CN206583592U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768771A (en) * | 2017-03-14 | 2017-05-31 | 北京强度环境研究所 | A kind of vibration testing device |
| CN114136572A (en) * | 2021-11-29 | 2022-03-04 | 中车青岛四方机车车辆股份有限公司 | Test vibration tool, vehicle equipment fatigue test device and method |
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