CN110243563A - Three axial six-freedom degree vibration test apparatus - Google Patents
Three axial six-freedom degree vibration test apparatus Download PDFInfo
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- CN110243563A CN110243563A CN201910600843.8A CN201910600843A CN110243563A CN 110243563 A CN110243563 A CN 110243563A CN 201910600843 A CN201910600843 A CN 201910600843A CN 110243563 A CN110243563 A CN 110243563A
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- pedestal
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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
- G01M7/06—Multidirectional test stands
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- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention discloses the axial six-freedom degree vibration test apparatus of one kind three comprising MIMO controller, power amplification system, shaking platform, water gas system and hydraulic system；MIMO controller generates drive voltage signal inputted vibration platform after power amplification system; shaking platform is set to generate vibration; the response on the plane of oscillation feeds back to MIMO controller simultaneously; water gas system is connected with shaking platform; hydraulic system is connected with shaking platform, and shaking platform includes that electric vibration table, hydrostatic bearing, vibration table, trunnion mounting, pedestal and ball twisted displacement protecting device；Electric vibration table passes through corresponding trunnion mounting respectively and is attached with pedestal；Electric vibration table is connect by hydrostatic bearing with vibration table: electric vibration table passes through each side that hydrostatic bearing is connected to vibration table lower surface and vibration table respectively；Vibration table is crossed displacement protecting device and auxiliary support apparatus by flexural pivot and is connect with pedestal.
Description
Technical field
The present invention relates to vibration test technical fields, more specifically it relates to the axial six degree of freedom vibration of one kind three
Dynamic test device.
Background technique
What high-performance weaponry was really undergone in the prior art is multi-freedom-degree vibration environment.More with weaponry
Newly, the corresponding real simulation vibration environment more diversification of demand.In order to more really simulation high-performance weaponry face it is true
Real vibration environment, the independent research of vibration test become the important trend of development.Simulation high-performance weaponry faces true
It when vibration environment, tested that range request is more complicated, and technical difficulty is bigger, and element of its control can be more, thus test is set
Standby and testing program requirement is higher.
It is domestic at present still big without better such device, especially thrust, and the test dress that operating frequency range is wide
It sets.Meanwhile the test method about such vibration testing device, country's respective standard also only gives relative theory at present, lacks
Less explicitly about excitation vibration testing method, it is impossible to be used in instruct three axial six-freedom degree vibration tests of equipment.
Summary of the invention
For the shortcomings of the prior art, the purpose of the present invention is to provide the axial six degree of freedom vibrations of one kind three
Dynamic test device is a kind of multi-dimensional vibration experimental rig, the three axial six-degree of freedom vibration, impact test for equipment.
Technical scheme is as follows:
The axial six-freedom degree vibration test apparatus of one kind three comprising MIMO controller, power amplification system, shaking platform, water
Gas system and hydraulic system；It is flat that the MIMO controller generation drive voltage signal inputs the vibration after the power amplification system
Platform makes the shaking platform generate vibration, while the response on the plane of oscillation feeds back to the MIMO controller, thus real
Existing vibration control；The water gas system is connected with the shaking platform, provides cooling water and compressed air for it；The hydraulic pressure system
System is connected with the shaking platform, is its fuel feeding；The shaking platform is three axial six-degree of freedom vibration platforms；The vibration is flat
Platform includes that electric vibration table, hydrostatic bearing, vibration table, trunnion mounting, pedestal and ball twisted displacement protecting device；The electricity
Dynamic shake table passes through corresponding trunnion mounting respectively and is attached with pedestal；Electric vibration table passes through hydrostatic bearing and vibration table
Connection: electric vibration table passes through each side that hydrostatic bearing is connected to vibration table lower surface and vibration table respectively；Institute
It states vibration table displacement protecting device and auxiliary support apparatus is crossed by flexural pivot and connect with pedestal.
Preferably, the quantity of the trunnion mounting is four sets, and the trunnion mounting is arranged on the pedestal, and it is arranged
In the two sides of the electric vibration table, two sides symmetrical cloth of the trunnion mounting in the upper surface electric vibration table of the pedestal
It sets.
Preferably, the electric vibration table includes shake table stage body and cooling system, power amplification system, cooling system and power amplifier
System integrates, and the main part of electric vibration table is cylindrical structure, passes through radial distribution threaded hole on table top and vibration
Dynamic table top connection；Wherein 4 sets of electric vibration tables are connect with vibration table lower surface, are fixed on the bottom of pedestal；Other 4 sets electronic
The connection of 4 sides of shake table and vibration table；Be provided with trunnion on the side wall of the cylindrical structure, so as to trunnion mounting
Connecting hole installed, be fixed on the upper surface of pedestal by trunnion mounting, electric vibration table can be realized by trunnion to be rotated,
To realize that vibration table Triaxiality and six degrees of freedom vibrates.
Preferably, the trunnion mounting includes pedestal, support portion and electric vibration table mounting portion, and the pedestal is connected to institute
The upper surface of pedestal is stated, the width at the both ends of the pedestal is greater than the width of the centre of the pedestal.
Preferably, fastener connecting hole is provided on the pedestal, there are two fasteners to connect for the both ends setting of the pedestal
Hole is connect, the centre of the pedestal is respectively arranged with a fastener connecting hole in its width direction.
Preferably, the support section includes the first support portion and the second support portion, first support portion and second
Cavity is formed between support part, be arranged in its width direction a fastener connecting hole for the centre of the pedestal is located at institute
It states in cavity, and close to the inside of each support portion.The support portion and the pedestal are integrally formed, the electric vibration table installation
Portion is located at the top of the support portion.
Preferably, the support portion and the motorized stage mounting portion are integrally formed, and are set on the electric vibration table mounting portion
The structure connecting with the electric vibration table is set, electric vibration table mounting portion is equipped with connecting hole, corresponding with electric vibration table to connect
It connects hole and is integrally connected molding.
Preferably, the vibration table is rectangular parallelepiped structure, and cavity, inside filling resistance are provided in the rectangular parallelepiped structure
Damping material；Rectangular body side surface is uniformly distributed big aperture, so as to loss of weight and filling damping material；The rectangular parallelepiped structure and electronic vibration
Dynamic platform connection.
Preferably, the pedestal is electric vibration table, trunnion mounting and ball twisted displacement protecting device and provide support；4
Electric vibration table is fixed on the bottom of pedestal；The support portion and pedestal of trunnion mounting are integrally formed；Ball twisted displacement protecting device
Spacing bracket and pedestal be integrally formed.
Preferably, it includes limited block and spacing bracket that the ball, which twisted displacement protecting device, and the ball twisted displacement protection
Device is fixed on pedestal by the spacing bracket, carries out displacement protection to hydrostatic bearing.
Compared with the prior art, the advantages of the present invention are as follows:
1, the present invention can be realized the three axial six-degree of freedom vibration including three translations, three rotations and control；
2, the present invention can provide bigger thrust compared with other testing stands；
3, system operating frequency range of the invention is wide, it is preferable that its frequency range is 5~2000Hz, real-time operation side
Just；
4, the present invention is technologically advanced at home and abroad, being capable of the axial six degree of freedom practical service environment of real simulation equipment three.
Detailed description of the invention
Fig. 1 is the system schematic of according to the present invention three axial six-freedom degree vibration test apparatus；
Fig. 2 is the structural schematic diagram of the shaking platform of according to the present invention three axial six-freedom degree vibration test apparatus；
Fig. 3 is the structural schematic diagram of the electric vibration table of according to the present invention three axial six-freedom degree vibration test apparatus；
Fig. 4 is the structural schematic diagram of the vibration table of according to the present invention three axial six-freedom degree vibration test apparatus；
Fig. 5 is the structural schematic diagram of the trunnion mounting of according to the present invention three axial six-freedom degree vibration test apparatus；
Fig. 6 is the structural schematic diagram of the pedestal of according to the present invention three axial six-freedom degree vibration test apparatus；
Fig. 7 is that the flexural pivot of according to the present invention three axial six-freedom degree vibration test apparatus crosses the structure of displacement protecting device
Schematic diagram；
Fig. 8 is the power amplification system operation principle schematic diagram of according to the present invention three axial six-freedom degree vibration test apparatus；
And
Fig. 9 is the hydraulic system operation principle schematic diagram of according to the present invention three axial six-freedom degree vibration test apparatus.
Specific embodiment
Below in conjunction with attached drawing, the present invention is described in further detail.
As shown in Figure 1 for according to three axial six-freedom degree vibration test apparatus of the embodiment of the present invention comprising MIMO control
Device 1, power amplification system 2, shaking platform 3, water gas system 4 and hydraulic system 5 processed；
MIMO controller 1 generates drive voltage signal inputted vibration platform 3 after power amplification system 2, generates shaking platform 3
Vibration, while the response on the plane of oscillation 3 feeds back to MIMO controller 1, to realize vibration control；
Water gas system 4 is connected with shaking platform 3, provides cooling water and compressed air for it；
Hydraulic system 5 is connected with shaking platform 3, is its fuel feeding.
Preferably, as shown in Fig. 2, shaking platform 3 is three axial six-degree of freedom vibration platforms.
Preferably, shaking platform 3 includes electric vibration table 6, hydrostatic bearing 7, vibration table 8, trunnion mounting 9, pedestal 10
And ball twisted displacement protecting device 11.
Preferably, the quantity of electric vibration table 6 is eight.
Preferably, the quantity of hydrostatic bearing 7 is eight.
Preferably, the quantity of trunnion mounting 9 is four sets, and trunnion mounting 9 is arranged on pedestal 10,6 two sides of electric vibration table,
Preferably, trunnion mounting 9 is arranged symmetrically in the two sides of the upper surface electric vibration table 6 of pedestal 10.
Preferably, electric vibration table 6 is attached by corresponding trunnion mounting 9 with pedestal 10 respectively；Electric vibration table 6
Connect by hydrostatic bearing 7 with vibration table 8: electric vibration table 6 is connected to 8 following table of vibration table by hydrostatic bearing 7 respectively
Face and each side of vibration table 8；Vibration table 8 crosses displacement protecting device 11 and auxiliary support apparatus and base by flexural pivot
Seat 10 connects.
More specifically, four electric vibration tables 6 are attached by corresponding trunnion mounting 9 with pedestal 10 respectively；Electricity
Dynamic shake table 6 is connect by hydrostatic bearing 7 with vibration table 8: wherein 4 electric vibration tables 6 are connected to vibration by hydrostatic bearing 7
Dynamic 8 lower surface of table top, 4 electric vibration tables 6 are respectively connected to 4 sides of vibration table 8 by hydrostatic bearing 7；Shake table
Face 8 is crossed displacement protecting device 11 and auxiliary support apparatus by flexural pivot and is connect with pedestal 10, as shown in Figure 2.
Preferably, the electricity of three axial six-freedom degree vibration test apparatus of embodiment according to the present invention is shown in Fig. 3
The structural schematic diagram of dynamic shake table 6.Electric vibration table 6 includes shake table stage body and cooling, power amplification system.Preferably, cooling system
System and power amplification system integrate, and the main part 61 of electric vibration table is cylindrical structure, pass through radial distribution on table top
Threaded hole 62 is connect with vibration table 8；Wherein 4 sets of electric vibration tables 6 are connect with 8 lower surface of vibration table, are fixed on pedestal 10
Bottom；Other 4 sets of electric vibration tables 6 are connect with 4 sides of vibration table 8；Ear is provided on the side wall of cylindrical structure
Axis 63 is fixed on the upper surface of pedestal 10, electronic vibration by trunnion mounting 9 to be installed with the connecting hole of trunnion mounting 9
Dynamic platform 6 can be realized by trunnion to be rotated, to realize that 8 Triaxiality and six degrees of freedom of vibration table vibrates.
Preferably, electric vibration table 6 is restructured by incuding ring type shake table, cancels original shake table air bullet
Spring vibrating isolation system redesigns installation trunnion mounting 9, the structure of trunnion mounting 9 as shown in figure 5, trunnion mounting 9 include pedestal,
Support portion and electric vibration table mounting portion, pedestal are connected to the upper surface of pedestal 10, and the width at the both ends of pedestal is greater than pedestal
Intermediate width；Preferably, fastener connecting hole is provided on pedestal, the both ends of pedestal are arranged there are two fastener connecting hole,
The centre of pedestal is respectively arranged with a fastener connecting hole in its width direction.Preferably, support section includes first
Support part and the second support portion, form cavity between the first support portion and the second support portion, the centre of pedestal along its width side
The fastener connecting hole set up is located in cavity, and close to the inside of each support portion.Support portion and pedestal one at
Type, electric vibration table installation position is in the top of support portion, it is preferable that support portion and motorized stage mounting portion are integrally formed, electronic
The structure connecting with electric vibration table 6 is set on shake table mounting portion, it is preferable that electric vibration table mounting portion is equipped with connecting hole,
Connecting hole corresponding with electric vibration table 6 is integrally connected molding.
Preferably, vibration table 8 are provided with cavity in rectangular parallelepiped structure as shown in figure 4, it is rectangular parallelepiped structure, internal
Fill damping material；Rectangular body side surface is uniformly distributed macropore and aperture 81, so as to loss of weight and filling damping material；Preferably,
Row interval arrangement where row and aperture where macropore.It is additionally provided with connecting hole 82 in each side of rectangular parallelepiped structure, with
Just it is connect with electric vibration table 6.Specifically, vibration table 8 its formed by magnesium alloy integrally cast, and in it fill damping
Material.
Preferably, as shown in figure 5, trunnion mounting 9 is welded by steel plate, to guarantee it with enough rigidity and strong
Degree bears the maximum counter-force that shake table generates, and keeps the induction original performance of ring type shake table.
Preferably, as shown in fig. 6, pedestal 10 is that electric vibration table 6, trunnion mounting 9 and ball twisted displacement protecting device 11
Support is provided；4 electric vibration tables 6 are fixed on the bottom of pedestal 10；The support portion and pedestal 10 of trunnion mounting 9 are integrally formed；
Ball twisted the spacing bracket of displacement protecting device 11 and pedestal 10 is integrally formed.The pedestal 10 have it is equally distributed support every
The side of plate, the pedestal is provided with square aperture.
Preferably, pedestal 10 its use welding for steel structure to form, bottom install integral vibration isolation system.
Preferably, it includes limited block 101 and spacing bracket that ball, which twisted displacement protecting device 11, and limited block and spacing bracket are equal
Using metal structure, ball twisted displacement protecting device 11 and was fixed on pedestal 10 by spacing bracket, to hydrostatic bearing 7 into
Displacement of going is protected.Preferably, it is inverted L shape structure that the flexural pivot, which crosses displacement protecting device 11, and corner is provided with fillet.Institute
It states limited block 101 and the first end that flexural pivot crosses displacement protecting device 11 is set, the limited block is fixed in the spacing bracket,
It is fixed on the first end of spacing bracket 102, the second end of the spacing bracket 102 is arranged connection sheet 103, is arranged in connection sheet
There is the fixation hole 104 being evenly arranged, as shown in Figure 7.Preferably, the spacing bracket is frame structure.
More specifically, three axial six-freedom degree vibration test apparatus include 1 set of MIMO controller, 1 set of power amplification system, 1
A three axial six-degree of freedom vibration platforms, 1 set of water gas system and 1 set of hydraulic system；Three axial six-degree of freedom vibration platforms include 8
A electric vibration table, 8 hydrostatic bearings, 8 sets of trunnion mountings, 1 vibration table, 1 pedestal and 1 set of ball twisted displacement protection
Device；MIMO controller generates 8 tunnel drive voltage signals, inputs 8 electric vibratings after 8 vibration table power amplifiers amplify
Platform；8 electric vibration tables make vibration table generate vibration by 8 hydrostatic bearings, and pedestal, ball twist protective device and other auxiliary
Device carries out space orientation to shake table and vibration table, realizes vibration table automatic centering；On the control point of vibration table
Acceleration responsive forms six-degree of freedom vibration response after coordinate transform, feeds back to MIMO controller；MIMO controller to six from
The driving signal of MIMO controller is produced on vibration table for example, amplitude, is compared and corrects by the parameter of degree response
The requirement of raw acceleration responsive Pass Test condition.
As shown in Figures 1 to 7: three axial six-degree of freedom vibration platforms 3 include 8 electric vibration tables, 6,8 hydrostatic bearings
7,18,8 sets of vibration table, 10,1 set of balls of pedestal of trunnion mounting 9,1 twisted displacement protecting device 11；
Electric vibration table 6 is restructured by induction ring type shake table, is amplified by vibration stage body, cooling blower, highly efficient power
Device and interface cable are integrated.According to demand, cancel original shake table air spring vibrating isolation system, redesign installation trunnion branch
Frame 9；
Hydrostatic bearing 7 selects double spherical static pressure balls to twist；
Vibration table 8 is formed by magnesium alloy integrally cast, and damping material is filled in it；
Trunnion mounting 9 is welded by steel plate with enough stiffness and strength, bears the maximum counter-force that shake table generates,
Keep the induction original performance of ring type shake table；Pedestal 10 is formed using welding for steel structure, and the dedicated material of cavity encapsulating inside it
Integral vibration isolation system is installed in material, bottom；It is metal structure that ball, which twisted displacement protecting device 11, is fixed on pedestal 10, is used
In the protection of hydrostatic bearing 7；Electric vibration table 6 is attached by trunnion mounting 9 with pedestal 10, to realize electric vibration table
6 rotation；Electric vibration table 8 is connect by hydrostatic bearing 7 with vibration table 8, provides required vibrator bar for vibration table 8
Part；Wherein 4 electric vibration tables 6 are connected to 8 lower surface of vibration table by hydrostatic bearing 7, and 4 electric vibration tables 6 pass through quiet
Last item holds 74 sides for being respectively connected to vibration table 8；Vibration table 8 is connected it with electric vibration table 6 by hydrostatic bearing 7
It connects, and displacement protecting device 11 and auxiliary support apparatus is crossed by flexural pivot and connect with pedestal 10；Three axial six certainly as shown in Figure 1:
It include MIMO controller 1, the axial six-degree of freedom vibration platform 3 of power amplification system 2, three, 4 and of water gas system by degree vibration experiment
Hydraulic system 5；Water gas system 4 is three axial 3 water supply gas supply of six-degree of freedom vibration platforms；Hydraulic system 5 is the confession of hydrostatic bearing 7
Oil；MIMO controller 1, which generates drive voltage signal and inputs electric vibration table 6 after power amplification system 2 and generate, to be vibrated, vibration table 8
On acceleration responsive feed back to MIMO controller, realize vibration control.
As shown in figure 8, showing the operation principle schematic diagram of power amplification system according to the present invention.
Wherein, power amplification system 2 includes PLC201, fault collection module 202, logic fault acquisition module 203, HMI204,
And electrical control 205.
Preferably, PLC201 acquires data by handling failure acquisition module 202 and logic fault acquisition module 203, leads to
The parameter that electrical control 205 controls electric vibration table 6, such as amplitude are crossed, and show instead by Human machine interface 204
Feedback, monitors data in real time.
The operation principle schematic diagram of hydraulic system according to the present invention is shown in Fig. 9.
Wherein, hydraulic system 5 includes fuel tank 501, main pump system 502, circulating cooling filtration system 503, fuel tank detection system
System 504, accumulator 505 and high pressure filtration system 506.
Preferably, fuel tank 501 is hydraulic system oil storage, and main pump system 502 takes oil from fuel tank 501, through high-pressure filteration system
System 506 gives 3 fuel feeding of shaking platform.
Preferably, oil return returns to fuel tank 501 after 503 cold filtration of circulating cooling filtration system.
Preferably, fuel tank detects the liquid level and oil temperature in 504 real-time monitoring fuel tanks 501, guarantees the normal work of system.
Preferably, accumulator 505 adjusts pipeline pressure oscillation.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. the axial six-freedom degree vibration test apparatus of one kind three, which is characterized in that it includes MIMO controller, power amplification system, vibration
Moving platform, water gas system and hydraulic system；The MIMO controller generates drive voltage signal and inputs after the power amplification system
The shaking platform makes the shaking platform generate vibration, while the response on the plane of oscillation feeds back to the MIMO control
Device processed, to realize vibration control；The water gas system is connected with the shaking platform, provides cooling water for it and compression is empty
Gas；The hydraulic system is connected with the shaking platform, is its fuel feeding；The shaking platform is that three axial six-degree of freedom vibration are flat
Platform；The shaking platform includes that electric vibration table, hydrostatic bearing, vibration table, trunnion mounting, pedestal and ball twisted displacement guarantor
Protection unit；The electric vibration table passes through corresponding trunnion mounting respectively and is attached with pedestal；Electric vibration table passes through static pressure
Bearing is connect with vibration table: electric vibration table passes through hydrostatic bearing respectively and is connected to vibration table lower surface and vibration table
Each side；The vibration table is crossed displacement protecting device and auxiliary support apparatus by flexural pivot and is connect with pedestal.
2. as described in claim 1 three axial six-freedom degree vibration test apparatus, which is characterized in that the number of the trunnion mounting
Amount is four sets, and the trunnion mounting is arranged on the pedestal, and its two sides that the electric vibration table is arranged in, the trunnion
Bracket is arranged symmetrically in the two sides of the upper surface electric vibration table of the pedestal.
3. as described in claim 1 three axial six-freedom degree vibration test apparatus, which is characterized in that the electric vibration table packet
Shake table stage body, cooling system and power amplification system are included, cooling system and power amplification system integrate, the main part of electric vibration table
It is divided into cylindrical structure, is connect by radial distribution threaded hole on table top with vibration table；Wherein 4 sets of electric vibration tables and vibration
Dynamic table top lower surface connection, is fixed on the bottom of pedestal；The connection of 4 sides of other 4 sets of electric vibration tables and vibration table；Institute
It states and is provided with trunnion on the side wall of cylindrical structure, it is solid by trunnion mounting to be installed with the connecting hole of trunnion mounting
It is scheduled on the upper surface of pedestal, electric vibration table can be realized by trunnion to be rotated, to realize that vibration table Triaxiality and six degrees of freedom shakes
It is dynamic.
4. three axial six-freedom degree vibration test apparatus as described in claim 1, which is characterized in that the trunnion mounting includes
Pedestal, support portion and electric vibration table mounting portion, the pedestal are connected to the upper surface of the pedestal, the both ends of the pedestal
Width is greater than the width of the centre of the pedestal.
5. as claimed in claim 4 three axial six-freedom degree vibration test apparatus, which is characterized in that be provided on the pedestal
Fastener connecting hole, there are two fastener connecting holes for the both ends setting of the pedestal, and the centre of the pedestal is along its width direction
On be respectively arranged with a fastener connecting hole.
6. three axial six-freedom degree vibration test apparatus as claimed in claim 5, which is characterized in that the support section includes
First support portion and the second support portion form cavity, the centre of the pedestal between first support portion and the second support portion
Be arranged in its width direction fastener connecting hole position in the cavity, and close to each support portion inside,
The support portion and the pedestal are integrally formed, and the electric vibration table installation position is in the top of the support portion.
7. three axial six-freedom degree vibration test apparatus as claimed in claim 6, which is characterized in that the support portion with it is described
Motorized stage mounting portion is integrally formed, and the structure connecting with the electric vibration table, electricity are arranged on the electric vibration table mounting portion
Dynamic shake table mounting portion is equipped with connecting hole, and connecting hole corresponding with electric vibration table is integrally connected molding.
8. as claimed in claim 7 three axial six-freedom degree vibration test apparatus, which is characterized in that the vibration table is length
Cube structure is provided with cavity, inside filling damping material in the rectangular parallelepiped structure；Rectangular body side surface is uniformly distributed size
Hole, so as to loss of weight and filling damping material；The rectangular parallelepiped structure is connect with electric vibration table.
9. as claimed in claim 8 three axial six-freedom degree vibration test apparatus, which is characterized in that the pedestal is electronic vibration
Dynamic platform, trunnion mounting and ball twisted displacement protecting device and provide support；4 electric vibration tables are fixed on the bottom of pedestal；Trunnion
The support portion and pedestal of bracket are integrally formed；Ball twisted the spacing bracket of displacement protecting device and pedestal is integrally formed.
10. as claimed in claim 9 three axial six-freedom degree vibration test apparatus, which is characterized in that the ball twisted displacement
Protective device includes limited block and spacing bracket, and the ball twisted displacement protecting device and is fixed on by the spacing bracket
On pedestal, displacement protection was carried out to hydrostatic bearing.
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| CN201910600843.8A CN110243563B (en) | 2019-07-04 | 2019-07-04 | Three-axial six-freedom vibration test device |
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| CN201910600843.8A CN110243563B (en) | 2019-07-04 | 2019-07-04 | Three-axial six-freedom vibration test device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110987344A (en) * | 2019-12-08 | 2020-04-10 | 中国航空综合技术研究所 | Three-degree-of-freedom low-frequency vibration test device |
| CN111380761A (en) * | 2020-04-28 | 2020-07-07 | 内蒙古工业大学 | Experimental device for influence of travelling crane vibration on performance of bridge deck material and operation method of experimental device |
| CN111912592A (en) * | 2020-07-31 | 2020-11-10 | 上海卫星工程研究所 | Staring camera micro-vibration test equipment and method |
| WO2021078044A1 (en) * | 2019-10-22 | 2021-04-29 | 北京航天希尔测试技术有限公司 | Electrically excited six-degrees-of-freedom vibration test device |
| CN113532782A (en) * | 2021-08-03 | 2021-10-22 | 北京航天希尔测试技术有限公司 | Eight-drive six-degree-of-freedom electric vibration test device with adjustable space pose |
| CN114646441A (en) * | 2022-03-16 | 2022-06-21 | 北京卫星环境工程研究所 | Three-axis six-degree-of-freedom vibration test condition design method based on interface force equivalence |
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| CN113532782A (en) * | 2021-08-03 | 2021-10-22 | 北京航天希尔测试技术有限公司 | Eight-drive six-degree-of-freedom electric vibration test device with adjustable space pose |
| WO2023011214A1 (en) * | 2021-08-03 | 2023-02-09 | 北京航天希尔测试技术有限公司 | Eight-drive six-degrees-of-freedom electric vibration testing device having adjustable spatial pose |
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