CN104266811B - Zero stiffness non-linear micro-vibration suspension apparatus and its micro-vibration test method - Google Patents
Zero stiffness non-linear micro-vibration suspension apparatus and its micro-vibration test method Download PDFInfo
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- CN104266811B CN104266811B CN201410472631.3A CN201410472631A CN104266811B CN 104266811 B CN104266811 B CN 104266811B CN 201410472631 A CN201410472631 A CN 201410472631A CN 104266811 B CN104266811 B CN 104266811B
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Abstract
The invention provides a kind of non-linear micro-vibration suspension apparatus of zero stiffness and its micro-vibration test method, this device for hoisting includes：The film spring group of responsible system zero stiffness region；The outer protection of responsible whole device and positioned internal and the protection cylinder installed；It is located inside protection cylinder, be responsible for guiding and the positioning tool installing positioning outside film spring group；The protecting against shock at responsible whole device top, the cover sheet of dust-proof and anti-fifth wheel；Positioned at film spring group middle, be responsible for that film spring group border is spacing, pairing connects and rigidity, displacement superposed dividing plate；The guide pipe of guiding and pressure transmission inside film spring group, in responsible film spring group；On guide pipe, it is responsible for connecting suspension ring and the nut of guide pipe and load, suspension ring are anchored on guide pipe by nut.The present invention produces, using film spring group, the suspension apparatus that zero stiffness designs suspention zero stiffness, while effectively simulation is suspended the operation on orbit weightlessness of object, reaches the purpose that effective simulation is suspended the micro-vibration test of object ground.
Description
Technical field
The present invention relates to a kind of device for hoisting and its test method, in particular it relates to a kind of non-linear micro-vibration of zero stiffness is hanged
Device for hoisting and its micro-vibration test method.
Background technology
It is relatively low that micro-vibration is suspended object generally existing system stiffness, sensitive, quick to translation rotation coupling to micro-vibration
The features such as sense.In the micro-vibration process of the test of ground, typically take sus-pension rather than easily bring the air supporting mode of vibration to carry out ground
Face micro-vibration test, but general suspension system is difficult to the in-orbit weightlessness that accurate simulation micro-vibration is suspended object, main
It is embodied in suspension system rigidity to be difficult to reduce, to the aspects such as translation rotation coupling sensitivity, meanwhile, the suspention of positive negative stiffness superposition
Device there is also the precision of positive and negative Rigidity Matching and the problem that Project Realization difficulty is also larger.
Content of the invention
For defect of the prior art, it is an object of the invention to provide a kind of zero stiffness non-linear micro-vibration suspension apparatus
And its micro-vibration test method, it produces, using film spring group, the suspension apparatus that zero stiffness designs suspention zero stiffness, can carry
It is suspended the weight of object, while effectively simulation is suspended the operation on orbit weightlessness of object, do not affect to be suspended object
Result of the test, reach the purpose that effective simulation is suspended the micro-vibration test of object ground.
According to an aspect of the present invention, a kind of zero stiffness non-linear micro-vibration suspension apparatus are provided it is characterised in that its
Including：
The film spring group of responsible system zero stiffness region；
The outer protection of responsible whole device and positioned internal and the protection cylinder installed；
It is located inside protection cylinder, be responsible for guiding and the positioning tool installing positioning outside film spring group；
The protecting against shock at responsible whole device top, the cover sheet of dust-proof and anti-fifth wheel；
Positioned at film spring group middle, be responsible for that film spring group border is spacing, pairing connects and rigidity, displacement superposed dividing plate；
The guide pipe of guiding and pressure transmission inside film spring group, in responsible film spring group；
On guide pipe, it is responsible for connecting suspension ring and the nut of guide pipe and load, suspension ring are anchored on guiding by nut
Guan Shang.
Preferably, described suspension ring are connected with guide pipe and pass through the end plate of guide pipe and will be suspended object weight transmitting to film
Spring group, guide pipe drives film spring group to move along guide pipe and its carrying direction.
Preferably, described film spring group is using the pairing combination implemented by dividing plate or overlapping combining form.
Preferably, described film spring group adopts nonlinear spring, there is the zero stiffness area of 2mm to 4mm scope.
Preferably, described film spring group matches pairing quantity or overlapping quantity in advance according to the quality being suspended object,
When loading is suspended object, zero stiffness position is monitored by ruler and moves.
Preferably, one end of described guide pipe is designed as suspension ring suspension centre, and the other end of guide pipe is designed with end plate.
Preferably, described protection cylinder there is film spring positioning and guiding groove, and protects cylinder to be designed with four oval monitoring windows,
Whether oval monitoring window monitoring film spring working condition is normal.
The present invention also provides a kind of micro-vibration test method of zero stiffness non-linear micro-vibration suspension apparatus, and its feature exists
In described test method adopts zero stiffness as above non-linear micro-vibration suspension apparatus, and described test method includes following
Step：
The first step, according to the combining form being suspended object composition film spring and quantity, and assembles；
Second step, suspension ring is connected with being suspended object and carrying out single-point suspention, and makes suspension ring stress vertically and by quilt
Suspention object barycenter, that is, hanging point and barycenter are on same vertical curve；
3rd step, suspension ring are connected with guide pipe and pass through guide pipe and will be suspended object weight transmitting to film spring group；
4th step, guiding tube end sheet drives film spring group to enter zero stiffness area along guide pipe, and making to be suspended object, to enter zero firm
Spend agravic region；
5th step, monitors suspension apparatus path increment by the monitoring window and ruler protecting cylinder, determines that device enters film spring
Zero stiffness working area, starts to test.
Compared with prior art, the present invention has following beneficial effect：One, the present invention adopts single-point to suspend connection side in midair
Formula, hanging point and barycenter are on same vertical curve, can be prevented effectively from the translation rotation coupling that the design of multi beam many hanging points easily causes and ask
Topic, the transfer mode of suspension force is simply efficient, and realizability is strong；Two, the present invention adopts film spring group and its zero stiffness area as outstanding
Hang the mode of zero stiffness realization, according to being suspended object quality, the stiffness characteristics of design film spring group and compound mode are so that suspend in midair
Enter zero stiffness area afterwards, and possess enough fault-tolerant abilitys；Three, the present invention carries out carrying the company with suspension apparatus using suspension ring
Connect, simple, easily enforcement test.Four, the longer boom length (not less than 2 meters) of present invention design is so that be suspended object
Horizontal frequency and the horizontal frequency of suspension apparatus be difficult coupled resonance.
Brief description
The detailed description with reference to the following drawings, non-limiting example made by reading, the further feature of the present invention,
Objects and advantages will become more apparent upon：
Fig. 1 is the structural representation of zero stiffness of the present invention non-linear micro-vibration suspension apparatus.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, some deformation can also be made and improve.These broadly fall into the present invention
Protection domain.
As shown in figure 1, the non-linear micro-vibration suspension apparatus of zero stiffness of the present invention include：
The film spring group 1 of responsible system zero stiffness region；
The outer protection of responsible whole device and positioned internal and the protection cylinder 2 installed；
It is located inside protection cylinder, be responsible for guiding and the positioning tool 3 installing positioning outside film spring group；
The protecting against shock at responsible whole device top, the cover sheet 4 of dust-proof and anti-fifth wheel；
Positioned at film spring group middle, be responsible for that film spring group border is spacing, pairing connects and rigidity, displacement superposed dividing plate 5；
The guide pipe 6 of guiding and pressure transmission inside film spring group, in responsible film spring group；
On guide pipe, it is responsible for connecting the suspension ring 7 of guide pipe and load and nut 8, suspension ring 7 are anchored on by nut 8
On guide pipe 6.
Suspension ring are connected with guide pipe and pass through the end plate of guide pipe and will be suspended object weight transmitting to film spring group, guide pipe
Film spring group is driven to move along guide pipe and its carrying direction.So, the line bearing mode of film spring group can be changed into face to carry
Mode, the latter is more conducive to the transmission of suspention carrying and stablizes, and guide pipe can play guide effect, is also beneficial to what suspention carried
Transmission, it is ensured that suspended state, finally ensures vertical suspention frequency.
Described film spring group is using the pairing combination implemented by dividing plate or overlapping combining form, specifically, described film spring
Group can carry out pairing by dividing plate, also can directly overlap, and quantity can be increased and decreased as needed.Described film spring group adopts non-thread
, there is the zero stiffness area of 2mm to 4mm scope in property spring.The zero stiffness area of Hookean spring is minimum, less than 0.5mm, and nonlinear
Zero stiffness area is larger, can reach 2～4mm, during application, certainly needs zero stiffness area to be the bigger the better, is on the one hand suspended state
Enforcement be easier to, and stable after implementing；Meanwhile, need to do micro-vibration test after suspention, during test amplitude just in 2mm, such as
Less than 2mm, this device just fails in fruit zero stiffness area.
Film spring group can match pairing quantity or overlapping quantity in advance according to the quality being suspended object, is hanged loading
When hanging object, zero stiffness position is monitored by ruler and moves.Overlapping and pairing can arbitrarily adjust as needed, and ruler is monitored just
Prompt, reliable, low cost, resource are few, process realizability high.
Baffle surface is high-strength material (such as rustless steel) and less surface roughness, such low cost.
One end of guide pipe is designed as suspension ring suspension centre, and the other end of guide pipe is designed with end plate, possesses the limit for film spring
While position constraint, transmission carrying and guiding movement, it is also equipped with film spring and positioning and guiding groove 9 is installed.The assembling of film spring positions and outstanding
When state of hanging is subject to horizontal large impact or vibration, film spring is installed positioning and guiding groove and is ensured that film spring is unlikely to sideslip, and makes device
Lost efficacy.
Also there is film spring that positioning and guiding groove 9 is installed on protection cylinder, and protect cylinder to be designed with four oval monitoring windows, oval
Whether shape monitoring window monitoring film spring working condition is normal.
The main feature of the present invention is as follows：(1), the design configuration of zero stiffness non-linear micro-vibration suspension apparatus is simple, has good
Good design flexibility, realize economy and assembly process process；(2), the suspention frequency of zero stiffness non-linear micro-vibration suspension apparatus
For 0HZ, disclosure satisfy that intrasonic micro-vibration is suspended the ground micro-vibration test requirements document of object；(3), zero stiffness is non-linear micro- shakes
Dynamic suspension apparatus, possess enough rigidity carry be suspended object weight while, reducing positive negative stiffness, to be superimposed difficulty larger
Problem, and effectively overcome coupled problem being suspended between object and suspension arrangement etc.；(4), pass through test, demonstrate zero firm
The suspention frequency spending non-linear micro-vibration suspension apparatus is zero frequency, and demonstrating zero stiffness non-linear micro-vibration suspension apparatus can have
Effect simulation is suspended object operation on orbit environment, has reached purpose of design it is achieved that test objective.
In the present invention, the technical specification of zero stiffness non-linear micro-vibration suspension apparatus is as table one：Suspention frequency, suspention are just
Degree, boom length and single-point suspention error etc..Following table one is development and production and a kind of zero stiffness completing every test is non-
The key technical indexes of linear micro-vibration suspension apparatus：
Table one
| Sequence number | Project | Require |
| 1 | Suspention frequency | Close to 0Hz |
| 2 | Suspention rigidity | Close to 0N/m |
| 3 | Boom length | Not less than 2m |
| 4 | Single-point suspends error in midair | ≤5mm |
The micro-vibration test method of the non-linear micro-vibration suspension apparatus of zero stiffness of the present invention comprises the following steps：
The first step, according to the combining form being suspended object composition film spring and quantity, and assembles；
Second step, suspension ring is connected with being suspended object and carrying out single-point suspention, and makes suspension ring stress vertically and by quilt
Suspention object barycenter, that is, hanging point and barycenter are on same vertical curve；
3rd step, suspension ring are connected with guide pipe and pass through guide pipe and will be suspended object weight transmitting to film spring group；
4th step, guiding tube end sheet drives film spring group to enter zero stiffness area along guide pipe, and making to be suspended object, to enter zero firm
Spend agravic region；
5th step, monitors suspension apparatus path increment by the monitoring window and ruler protecting cylinder, determines that device enters film spring
Zero stiffness working area, starts to test.
In sum, the present invention is suspended object by single-point suspention, transmits load extremely by suspension ring and guiding tube end sheet
The film spring group of suspension apparatus, makes suspension apparatus that certain displacement stroke to occur, reaches the zero stiffness area of film spring group, make suspension apparatus
Produce zero stiffness operating characteristic.During suspention, also suspension apparatus path increment can be monitored by height gauge, confirm its zero stiffness
Working region.This device have zero stiffness characteristic, configuration is simple, extensibility is strong, creep resisting ability is excellent, economy and durability, can
By property high, assembling is convenient, easy to use, applied range the features such as, the ground that various intrasonic are suspended object can be applied to
During interview is tested.
The present invention passes through design film spring zero stiffness interval and realizes suspension apparatus zero stiffness characteristic, takes single-point to cross and is suspended
Object barycenter hang, realizes the ground micro-vibration test that micro-vibration is suspended simulating operation on orbit state.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various modifications or modification within the scope of the claims, this not shadow
Ring the flesh and blood of the present invention.
Claims (8)
1. a kind of non-linear micro-vibration suspension apparatus of zero stiffness are it is characterised in that it includes：
The film spring group of responsible system zero stiffness region；
The outer protection of responsible whole device and positioned internal and the protection cylinder installed；
It is located inside protection cylinder, be responsible for guiding and the positioning tool installing positioning outside film spring group；
The protecting against shock at responsible whole device top, the cover sheet of dust-proof and anti-fifth wheel；
Positioned at film spring group middle, be responsible for that film spring group border is spacing, pairing connects and rigidity, displacement superposed dividing plate；
The guide pipe of guiding and pressure transmission inside film spring group, in responsible film spring group；
On guide pipe, it is responsible for connecting suspension ring and the nut of guide pipe and load, suspension ring are anchored on guide pipe by nut.
2. the non-linear micro-vibration suspension apparatus of zero stiffness according to claim 1 are it is characterised in that described suspension ring and guiding
Pipe is connected and will be suspended object weight transmitting to film spring group by the end plate of guide pipe, and guide pipe drives film spring group along guide pipe
And its carry direction motion.
3. the non-linear micro-vibration suspension apparatus of zero stiffness according to claim 1 are it is characterised in that described film spring group adopts
The pairing combination implemented by dividing plate or overlapping combining form.
4. the non-linear micro-vibration suspension apparatus of zero stiffness according to claim 3 are it is characterised in that described film spring group adopts
, there is the zero stiffness area of 2mm to 4mm scope in nonlinear spring.
5. the non-linear micro-vibration suspension apparatus of zero stiffness according to claim 4 it is characterised in that described film spring group according to
The quality being suspended object matches pairing quantity or overlapping quantity in advance, when loading is suspended object, is monitored by ruler
Zero stiffness position is moved.
6. the non-linear micro-vibration suspension apparatus of zero stiffness according to claim 4 it is characterised in that described guide pipe one
End is designed as suspension ring suspension centre, and the other end of guide pipe is designed with end plate.
7. the non-linear micro-vibration suspension apparatus of zero stiffness according to claim 1 are it is characterised in that have on described protection cylinder
Film spring positioning and guiding groove, and protect cylinder to be designed with four oval monitoring windows, oval monitoring window monitoring film spring work shape
Whether state is normal.
8. a kind of micro-vibration test method of the non-linear micro-vibration suspension apparatus of zero stiffness is it is characterised in that described test method
Using the non-linear micro-vibration suspension apparatus of the zero stiffness described in claim 1, described test method comprises the following steps：
The first step, according to the combining form being suspended object composition film spring and quantity, and assembles；
Second step, suspension ring is connected with being suspended object and carrying out single-point suspention, and makes suspension ring stress vertically and pass through to be suspended
Object barycenter, that is, hanging point and barycenter are on same vertical curve；
3rd step, suspension ring are connected with guide pipe and pass through guide pipe and will be suspended object weight transmitting to film spring group；
4th step, guiding tube end sheet drives film spring group to enter zero stiffness area along guide pipe, makes to be suspended object entrance zero stiffness no
Gravity region；
5th step, monitors suspension apparatus path increment by the monitoring window and ruler protecting cylinder, determines that device enters film spring zero firm
Degree working area, starts to test.
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| 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 |
| CN112504595B (en) * | 2020-10-27 | 2022-07-05 | 北京控制工程研究所 | Micro-vibration influence measuring device and method for space-oriented measuring instrument |
| CN115108444B (en) * | 2022-05-20 | 2023-06-16 | 长光卫星技术股份有限公司 | Longitudinal suspension device |
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