CN106840559B - A kind of adjustable single layer and double-layer vibration isolating system vibration mechine and test method - Google Patents
A kind of adjustable single layer and double-layer vibration isolating system vibration mechine and test method Download PDFInfo
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- CN106840559B CN106840559B CN201510875480.0A CN201510875480A CN106840559B CN 106840559 B CN106840559 B CN 106840559B CN 201510875480 A CN201510875480 A CN 201510875480A CN 106840559 B CN106840559 B CN 106840559B
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- 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
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Abstract
The invention discloses a kind of adjustable single layer and double-layer vibration isolating system vibration mechine and test methods.Including vibration source equipment, dynamic vibration absorber, equipment vibration isolator, raft body, isolation-base, foundation framework, T-slot, vibration test system, frequency converter；Isolation-base is mounted between raft body and foundation framework, and equipment vibration isolator is mounted between vibration source equipment and raft body；Dynamic vibration absorber is installed on vibration source equipment and/or raft body.The present invention passes through the installation environment and working environment of analog basis vibration isolator, equipment vibration isolator, dynamic vibration absorber, acquire vibration signal, obtain the dynamic characteristic parameter of vibration isolator, dynamic vibration absorber, analysis subtracts anti-vibration performance, vibration insertion loss when analyzing with/without dynamic vibration absorber predicts vibration absorbing performance.The present invention can carry out the performance test of double-layered isolator and dynamic vibration absorber simultaneously, can acquire and analyze the loading force that vibration acceleration, displacement and force signal and vibration isolator and dynamic vibration absorber are transmitted.
Description
Technical field
The present invention relates to the vibration test technical fields for subtracting vibrating isolation system.
Background technique
Vibration is one of most common phenomenon of nature, and in many cases, vibration is considered as negative factor.For example,
Vibration will affect precision equipment machining accuracy, aggravate component fatigue and abrasion, shorten machine service life；Vibration is also possible to cause
The large deformation of structure destroys, and causes the accident；Also will affect people at car and boat, cabin and the machine operation etc. it is comfortable under environment
Property, or even endanger the health of people.
Usually there are two types of measures for vibration damping, first is that reducing the vibration of equipment itself by the rational design of mechanical equipment.Second is that
It is absorbed on route of transmission and vibration is isolated, to reduce the energy that mechanical oscillation are propagated outward to the greatest extent.At present frequently with passive
The method of vibration isolation reduces the vibration of mechanical equipment, i.e., various isolation mountings, such as single-layer partiting polarization are installed between vibration source and pedestal
Device, double-deck Buoyant Raft Shock-resistant System etc., can also install dynamic vibration absorber in equipment and pedestal, absorb and consume vibration equipment
Energy.As soon as if being inserted into a spring-mass element in single-layer partiting polarization system, as a double-layer vibration isolating system, it mainly by
Two layers vibration isolator and intermediate raft body composition, and intermediate raft weight with double-layer vibration isolating system will affect by the ratio of device for vibration insutation quality
The vibration isolating effect of system.Compared to single-layer partiting polarization system, the vibration isolating effect of double-layer vibration isolating system is more superior, suitable for making an uproar to vibration
The field of sound requirement strict control.
Vibration isolator and dynamic vibration absorber are to set for controlling vibration source vibration and reducing the common measure of vibration transmitting with vibration source
Standby and pedestal collectively constitutes one and subtracts vibrating isolation system, and the system is in design to reasonable of the parameters such as quality, rigidity and damping
Have high requirements with tool.In order to accurately test subtract vibrating isolation system dynamic property and subtract vibration isolating effect, can be by laboratory
It builds test-bed and carries out vibration test to realize.Vibration mechine is in experiment indoor simulation indeed vibrations environmental effect
Testing equipment, in order to be able to achieve assembling, exciting and the Test Data Collecting of double-layer vibration isolating system and dynamic vibration absorber system, together
When can be common to multiple types vibration isolator and bump leveller again, its special and strict requirements has been built to testing stand.
Excitation refers to the external force (or other inputs) for the system of acting on, and system is made to generate response in some way.Response is
The output quantity of finger system.Transport refers to the dimensionless complex ratio of the response and excitation of system forced vibration.Vibration transfer ratioTIt is
The ratio between component vibration after referring to vibration isolation and the component vibration before vibration isolation.Vibration isolation rateη=(1-T) * 100%.
The prior art relates generally to the isolation mounting for solving specific vibration problem, not for subtracting the logical of vibrating isolation system
With test-bed, and the parameters such as quality, mass center, rigidity and installation site of most technical solutions are not adjustable.Such as it is public
The Business Machine equipment elasticity basis buoyant raft shock-resistant system and publication No. that cloth number is CN102644694A are CN201103649Y
A kind of floating raft type double-layer isolation device, be installed on the mechanical equipment of real ship or heat exchange station, by two layers vibration isolator and intermediate raft
Body composition lacks the function of system parameter adjustment, can be only applied to the specific vibration isolator under specific occasion after design typification,
With less the function of universal test bench.In the mass-adjustable that notification number is CN200949633Y than double-layer vibration isolating device, it can
Realize that intermediate mass is adjusted by loading graininess or powdered substance in quality cavity, although having adjusting raft weight
Function, but the part mass is integral with the rigid connection of raft body, under high-frequency vibration environment can not with raft body synchronize hold
Vibrational energy is carried on a shoulder pole, will affect system vibration transmitting and power distribution properties, and the device is again for a certain application
Design, the parameters such as equipment quality, excited frequency, raft body size, housing rigidity and vibration isolator are not adjustable, and can not be used for power
Bump leveller performance test, thus can not as universal test rack come using.
The prior art has the disadvantage in that
1. the prior art is the isolation mounting applied to certain specific occasions, it is installed on mechanical equipment normal operation environment
Under, cannot function as the general vibration mechine in laboratory come using；
2. the performance test of double-layered isolator and dynamic vibration absorber cannot be carried out simultaneously；
3. raft body size, quality and mass center are not adjustable；
4. vibration source equipment quality and excited frequency are not adjustable；
5. the rigidity of foundation framework is not adjustable；
6. the prior art after design typification, is only applicable to the vibration isolator of certain a kind of fixed interface size, and cannot be applicable in
In the vibration isolator of a variety of distinct interface sizes；
7. the prior art does not include vibration test equipment, the loading force that vibration isolator is transmitted can not be tested.
Summary of the invention
It, can be into the present invention provides a kind of adjustable single layer and double-layer vibration isolating system vibration mechine and test method
The performance test of row double-layer vibration isolating system and dynamic vibration absorber system both can analyze evaluation anti-vibration performance or vibration absorbing performance,
Guidance and verifying can be provided for the matching and debugging and optimization design of system parameter.
The technical scheme is that a kind of adjustable double-deck vibrating isolation system vibration mechine, including vibration source equipment, power
Bump leveller, equipment vibration isolator, raft body, isolation-base, foundation framework, T-slot；The foundation framework is mounted in T-slot, institute
Raft body is stated to be located above foundation framework；Vibration source equipment is located above raft body；Isolation-base be mounted on raft body and foundation framework it
Between, equipment vibration isolator is mounted between vibration source equipment and raft body；Dynamic vibration absorber is installed on vibration source equipment and/or raft body.
The adjustable double-deck vibrating isolation system vibration mechine further includes subtracting vibration isolation for acquiring vibration signal and analysis
The vibration test system of performance and the frequency converter of connection vibration source equipment.
Vibration source equipment includes vibration source, vibration source bottom plate, equipment counterweight, equipment rack；Equipment counterweight is mounted on equipment rack,
Vibration source bottom plate is mounted on equipment counterweight, and vibration source is mounted on vibration source bottom plate；The vibration source uses frequency conversion vibration motor or exciting
Device；Equipment counterweight is formed by stacking by multilayer mass block；The vibration source, vibration source bottom plate, equipment counterweight and equipment rack pass through bolt
Connect into an entirety；Equipment vibration isolator is mounted between equipment rack and raft body；Dynamic vibration absorber includes dynamic vibration absorber one
With dynamic vibration absorber two, mode is bolted in dynamic vibration absorber one or bonding way is mounted on vibration source bottom plate, and power is inhaled
Vibration device two is mounted on raft body by bolt connecting mode or bonding way.
Raft body includes the big raft body and small raft body to be linked together side by side by bolt, is respectively provided on big raft body and small raft body
There are the big counterweight of raft body and raft body miniweights；Several skies for being used to load the big counterweight of raft body or raft body miniweights are equipped with inside raft body
Chamber is bolted connection between the big counterweight of raft body or raft body miniweights and raft body；Raft body is equipped with several for installing
The installation hole location of equipment vibration isolator or isolation-base；Dynamic vibration absorber includes dynamic vibration absorber one and dynamic vibration absorber two, is moved
Mode is bolted in power bump leveller one or bonding way is mounted in vibration source equipment, and dynamic vibration absorber two is bolted
Mode or bonding way are mounted on big raft body or small raft body.
The adjustable double-deck vibrating isolation system vibration mechine further includes transition plates component, and the transition plates component includes
Transition plates component one and transition plates component two, transition plates component one include be connected to equipment vibration isolator it is above and below on
Transition plates one and lower transition plates one；Transition plates component two includes being connected to the above and below upper transition plates of isolation-base
Two and lower transition plates two；Equipment vibration isolator is fastenedly connected, with vibration source equipment by lower transition plates one and raft by upper transition plates one
Body is fastenedly connected；Lifting device is equipped with below vibration source equipment and below raft body, and the lifting device is jack, for can
Fast quick-detach is carried out to equipment vibration isolator or isolation-base under mode double-layer vibration isolating system vibration mechine overall package state
And replacement；Isolation-base is fastenedly connected with raft body by upper transition plates two, is connected by lower transition plates two and foundation framework fastening
It connects.
The junction or equipment vibration isolator of the vibration source equipment and equipment vibration isolator and junction, the isolation-base of raft body
With the junction, dynamic of the junction of raft body or the junction of isolation-base and foundation framework, dynamic vibration absorber and vibration source equipment
The junction of power bump leveller and raft body is provided with force snesor；It is the vibration source equipment close to equipment vibration isolator and raft body, tight
The raft body of adjacent isolation-base and foundation framework, close to the vibration source equipment or raft body of dynamic vibration absorber, dynamic vibration absorber mass block
On be mounted on vibration acceleration sensor or displacement sensor；The foundation framework and T-slot pass through bolt or elastic element
Connection, the elastic element are caoutchouc elasticity backing plate, steel spring or air spring.
A kind of adjustable monolayer device vibration isolator system vibration testing stand, including vibration source equipment, dynamic vibration absorber, equipment every
Shake device, raft body, foundation framework, T-slot；The foundation framework is mounted in T-slot, and the raft body is mounted on foundation framework；
Vibration source equipment is located above raft body；Equipment vibration isolator is mounted between vibration source equipment and raft body, is pacified on vibration source equipment and/or raft body
Equipped with dynamic vibration absorber.
A kind of adjustable single layer isolation-base system vibration testing stand, including vibration source equipment, dynamic vibration absorber, raft body,
Isolation-base, foundation framework, T-slot；The foundation framework is mounted in T-slot, and the raft body is located above foundation framework；
Vibration source equipment is mounted on raft body；Isolation-base is mounted between raft body and foundation framework, is pacified on vibration source equipment and/or raft body
Equipped with dynamic vibration absorber.
A kind of adjustable double-deck vibrating isolation system vibration testing method sets gradually foundation framework, raft body and vibration from bottom to up
Isolation-base is mounted between foundation framework and raft body by source device, and equipment vibration isolator is mounted on raft body and vibration source equipment
Between, dynamic vibration absorber is mounted on raft body and vibration source equipment, analog basis vibration isolator, equipment vibration isolator, dynamic vibration absorber
Installation environment and working environment, acquire vibration signal, obtain isolation-base, equipment vibration isolator, dynamic vibration absorber dynamic
Characterisitic parameter, analysis subtract anti-vibration performance and system frequency, vibration insertion loss when analyzing with/without dynamic vibration absorber, in advance
Survey vibration absorbing performance.
The adjustable double-deck vibrating isolation system vibration testing method is vibrated using above-mentioned adjustable double-deck vibrating isolation system
Testing stand is tested, comprising the following steps:
Step 1: installation adjustable double-deck vibrating isolation system vibration mechine:
A, installation foundation rack: T-slot is placed, and foundation framework is installed in T-slot by bolt；
B, installation foundation vibration isolator: isolation-base is fastenedly connected by lower transition plates two with foundation framework, then in base
Transition plates two is installed above plinth vibration isolator；
C, raft body is installed: big raft body and small raft body are mounted by means of bolts in upper transition plates two, and by big raft body
It is linked together side by side with small raft body by bolt, has been bolted connection the big counterweight of raft body on big raft body and small raft body
Or raft body miniweights, raft body places raft body miniweights by two close end, the big counterweight of raft body is placed at raft body middle part；
D, install equipment vibration isolator: equipment vibration isolator is fastenedly connected by lower transition plates one with raft body, then equipment every
Transition plates one is installed above vibration device；
E, vibration source equipment is installed: equipment rack being fastenedly connected by bolt with upper transition plates one, is pacified on equipment rack
Standby counterweight is installed, vibration source bottom plate is installed on equipment counterweight, vibration source is installed on vibration source bottom plate, by vibration source, vibration source bottom plate, equipment
An entirety is bolted into counterweight and equipment rack；
F, sensor is installed: in vibration source equipment and the junction of equipment vibration isolator or the connection of equipment vibration isolator and raft body
Junction, dynamic vibration absorber and the vibration source of place, the junction of isolation-base and raft body or isolation-base and foundation framework are set
The junction installation force snesor of standby junction, dynamic vibration absorber and raft body；Close to equipment vibration isolator vibration source equipment with
Raft body, close to the raft body and foundation framework of isolation-base, close to the vibration source equipment or raft body, dynamic vibration absorber of dynamic vibration absorber
Vibration acceleration sensor or displacement sensor are installed on equal positions；
G, vibration test system and frequency converter are installed: frequency converter is connected into vibration source equipment；Vibration test system is installed
It connects；
Step 2: starting adjustable double-deck vibrating isolation system vibration mechine is shaken by vibration excitor power amplifier or frequency conversion
Dynamic motor eccentric massblock adjusts the exciting force size of vibration source, and the vibration working frequency of vibration source is adjusted by frequency converter, real
It applies and determines frequency, frequency sweep, frequency multiplication or random excitation, then vibration signal is acquired by vibration test system, obtain isolation-base, equipment
The dynamic characteristic parameter of vibration isolator, dynamic vibration absorber；
Step 3: anti-vibration performance and vibration isolation are subtracted by vibration test system analysis foundation vibration isolator and equipment vibration isolator
The intrinsic frequency of system；The intrinsic frequency of vibration insertion loss when analysis is with/without dynamic vibration absorber and dynamic absorber system,
Predict vibration absorbing performance；Complete adjustable double-deck vibrating isolation system vibration test.
Advantages of the present invention: being 1. not limited to specific occasion, can as the general vibration mechine in laboratory come using.②
The performance test of double-layered isolator and dynamic vibration absorber can be carried out simultaneously.3. it can be used as double-layer vibration isolating system use, it can also group
Dress is that single-layer partiting polarization system uses.4. raft body size, the raft constitution heart, vibration source equipment quality, exciting force size, swashs at raft weight
Vibration direction, excited frequency, foundation framework rigidity are adjustable.5. being rigidly connected between counterweight and raft body, system vibration is not influenced
Transmitting and Energy distribution.6. containing transition connecting apparatus, the vibration isolator and dynamic absorber of a variety of distinct interface sizes can be suitably used for
Device, and installation number and installation site are adjustable.7. contain vibration test equipment, can acquire and analyze vibration acceleration,
The loading force that displacement, revolving speed and force signal and vibration isolator and dynamic vibration absorber are transmitted.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the adjustable double-deck vibrating isolation system vibration mechine in the embodiment of the present invention.
Fig. 2 is the raft body schematic diagram of internal structure in the embodiment of the present invention.
Fig. 3 is the mounting structure schematic diagram of the transition plates component one in the embodiment of the present invention.
Fig. 4 is the mounting structure schematic diagram of the transition plates component two in the embodiment of the present invention.
Description of symbols: vibration source 1, vibration source bottom plate 2, equipment counterweight 3, equipment rack 4, dynamic vibration absorber 1, upper transition
Plate 1, equipment vibration isolator 7, lower transition plates 1, big raft body 9, small raft body 10, the big counterweight 11 of raft body, raft body miniweights 12, power
Bump leveller 2 13, upper transition plates 2 14, isolation-base 15, lower transition plates 2 16, foundation framework 17, T-slot 18.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figures 1 to 4, a kind of adjustable double-deck vibrating isolation system vibration mechine mainly includes vibration source 1, vibration source bottom
It is plate 2, equipment counterweight 3, equipment rack 4, dynamic vibration absorber 1, upper transition plates 1, equipment vibration isolator 7, lower transition plates 1, big
Raft body 9, small raft body 10, the big counterweight 11 of raft body, raft body miniweights 12, dynamic vibration absorber 2 13, upper transition plates 2 14, basic vibration isolation
Device 15, lower transition plates 2 16, foundation framework 17, T-slot 18, frequency converter and vibration test system.Wherein, dynamic vibration absorber 1,
Equipment vibration isolator 7, dynamic vibration absorber 2 13, isolation-base 15 are can be needed to replace not same piece according to test by test specimen
Or type.
As shown in Figure 1, being rigidly connected between vibration source 1, vibration source bottom plate 2, equipment counterweight 3 and equipment rack 4 by bolt
One component, for simulating the quality and working frequency of actual machine equipment, wherein vibration source 1 can using frequency conversion vibration motor come
It realizes, can also be realized using professional vibration excitor；Equipment counterweight 3 is formed by stacking by multilayer mass block, and weight can basis
The load-bearing requirements situation of equipment vibration isolator 7 is adjusted.Dynamic vibration absorber 1 is mounted on vibration source by modes such as bolt or bondings
On bottom plate 2, for controlling machinery equipment vibration, and imitated by the performance parameter and absorbing of vibration test evaluation dynamic vibration absorber
Fruit.As shown in figures 1 and 3, transition plates component one includes being connected to the above and below upper transition plates one of equipment vibration isolator
With lower transition plates one.Equipment vibration isolator 7 is fastenedly connected by upper transition plates 1 with equipment rack 4, and passes through lower transition plates one
8 are fastenedly connected with big raft body 9 or small raft body 10, are used to xegregating unit vibration transmitting outward, and pass through vibration test valuator device
The performance parameter and vibration isolating effect of vibration isolator, wherein upper transition plates 1 and lower transition plates 1 play the adaptation of transition installation connection
Device effect is able to satisfy a variety of distinct interface size vibration isolator installations, can also need to redesign and replace according to new installation.This
Outside, by installing Interface design, the quantity and installation site of equipment vibration isolator may be implemented to adjust.Make below equipment rack 4
Vibration source equipment is lifted with lifting devices such as jack, facilitates the installation and removal of equipment vibration isolator.Upper transition plates 1 with set
Force snesor is installed between standby vibration isolator 7, it can be with dynamic load size and spectral characteristic that test equipment vibration isolator is transmitted.
It (is constituted as shown in Fig. 2, raft body is made of big raft body 9, small raft body 10, the big counterweight 11 of raft body and raft body miniweights 12
Raft body component, i.e. raft body), pass through bolt rigidity between big raft body 9, small raft body 10, the big counterweight 11 of raft body and raft body miniweights 12
It is fastenedly connected, two raft bodies can also be split to be used alone, so that the raft body there are three types of different specification size is available
With use.Counterweight has a counterweight of 2 kinds of size specifications: the big counterweight 11 of raft body and raft body miniweights 12 are, it can be achieved that weight coarse adjustment and thin
It adjusts.Raft body inner space is divided into very a plurality of cavities, and inside optionally loads counterweight, and raft body puts the small weight of raft body by two close end
Code, it is intermediate place the big counterweight of raft body, so as to significantly adjusting raft weight, the also centroid position of adjustable raft body, and
It is fastenedly connected between each counterweight and raft body by bolt assembly, to guarantee that counterbalance mass is under vibration with raft weight
It is whole.Multiple vibration isolators (including equipment vibration isolator and isolation-base) position of mounting hole, installation number and position is reserved on raft body
Set to change as needed.As shown in Figure 1, dynamic vibration absorber 2 13 by the modes such as bolt or bonding be mounted on big raft body 9 or
On small raft body 10, for controlling the vibration of raft body, and pass through the performance parameter and shock attenuation result of vibration test evaluation dynamic vibration absorber.
The parameters such as raft body size/quality/mass center, vibration source equipment quality/frequency/amplitude, foundation framework support stiffness can be real
Now adjust；Equipment vibration isolator, the type of isolation-base and dynamic vibration absorber, installation number and position can change.
As shown in Figure 1 and Figure 4, transition plates component two includes being connected to the above and below upper transition of isolation-base
Plate two and lower transition plates two.Isolation-base 15 is fastenedly connected by upper transition plates 2 14 and big raft body 9 or small raft body 10, and
It is fastenedly connected, is vibrated for raft body is isolated to basis transmitting, and pass through vibration examination with foundation framework 17 by lower transition plates 2 16
The performance parameter and vibration isolating effect of evaluation isolation-base are tested, wherein upper transition plates 2 14 and lower transition plates 2 16 play transition peace
The adapter effect that load connects can satisfy a variety of distinct interface size vibration isolator installations, can also be according to new installation needs
It redesigns and replaces.In addition, by installation Interface design, the quantity and installation site of isolation-base may be implemented to adjust.
Raft body is lifted using the lifting devices such as jack below big raft body 9 and small raft body 10, facilitate the installation of isolation-base with
Disassembly.Dynamic force snesor is installed between upper transition plates 2 14 and isolation-base 15,15 institute of isolation-base can be tested
The dynamic load size and spectral characteristic of transmitting.
As shown in Figure 1, in order to be adjustable the rigidity of foundation framework 17, the connection type of foundation framework and T-slot 18 can be with
It is rigidly connected, can also be attached using the elastic element of required rigidity, such as rubber mat using bolt as needed
Plate, steel spring, air spring etc..
When carrying out vibration test, vibration source equipment, vibration isolator (including equipment vibration isolator and isolation-base) upper and lower side,
Vibration is installed at the positions such as dynamic vibration absorber (including dynamic vibration absorber one and dynamic vibration absorber two) mass block, raft body, foundation framework
Dynamic acceleration transducer or displacement sensor, and in equipment vibration isolator and equipment rack junction (or equipment vibration isolator and raft
Body junction), isolation-base and raft body junction (or isolation-base and foundation framework junction), dynamic vibration absorber and machine
The positions such as frame (including foundation framework and equipment rack) or raft body junction are installed by force snesor.It is put by professional vibration excitor power
Big device or frequency conversion vibration motor eccentric massblock adjust the exciting force size of vibration source 1, and the vibration of vibration source 1 is adjusted by frequency converter
It starts building working frequency, implementable fixed frequency, frequency sweep, frequency multiplication or random excitation, then by vibration test system acquisition vibration signal, thus
Analysis vibrating isolation system and dynamic vibration absorber system subtract anti-vibration performance, and the matching and debugging for system parameter, active control are calculated
Method debugging and optimization design provide guidance and verifying.
The present invention has vibration isolator performance test function, can be assembled into buoyant raft double-layered isolator system and is tested, at this time
Raft body is between two layers of vibration isolator (equipment vibration isolator and isolation-base)；Also it can be assembled into the progress of monolayer device vibration isolator system
Test, raft body and foundation framework are rigidly connected at this time；Single layer isolation-base system can also be assembled into be tested, shaken at this time
Source device and raft body are rigidly connected.
The present invention has dynamic vibration absorber performance test function, and dynamic vibration absorber is mountable on vibration source equipment under-chassis,
It is mountable on raft body.The system core parameter of vibration mechine may be implemented to adjust, including vibration source equipment quality, exciting force are big
Small, direction of excitation, excited frequency, raft body specification, raft weight, the raft constitution heart, housing rigidity.Raft body is removable to be divided into two kinds
Specification divides raft body (big raft body or small raft body) to use, and also can be assembled as the use of raft body.Counterweight can be loaded inside raft body,
Quality and mass center can be adjusted substantially.The installation number and installation site of vibration isolator and dynamic vibration absorber may be implemented to adjust.
Force sensor, and the connection in dynamic vibration absorber and rack or raft body are arranged in the junction of vibration isolator and raft body or rack
Place's arrangement force snesor, can test the power that vibration isolator or bump leveller are transmitted, analysis system transmissibility.It is connected by transition
Plate (transition plates component) design makes testing stand can be suitably used for the vibration isolator or dynamic vibration absorber of a variety of distinct interface Dimension Types
Installation.
The present invention is directed to prior art disadvantage, proposes new solution, is related to a kind of vibration examination for subtracting vibrating isolation system
Platform device is tested, more particularly to a kind of double-deck buoyant raft shock-resistant system testing stand, quality, mass center, rigidity, the frequency of the pilot system
Etc. parameters be able to achieve adjusting, can combine or split into three kinds of various sizes of raft bodies, equipped with vibration test equipment, can simultaneously into
The performance test of row double-layered isolator and dynamic vibration absorber also can be suitably used for the vibration isolator of distinct interface size and bearing capacity.
Table apparatus involved in the present invention can simulate the installation environment of the equipment vibration isolator such as ship, vehicle, Wind turbine,
Examination mounting condition is provided by test specimen for single-layer partiting polarization device and the double-deck floating raft vibration isolation device system etc., the equipment such as simulated machine, pump swash
Characteristic is encouraged, the dynamic characteristic parameters such as the intrinsic frequency, dynamic stiffness, damping of vibrating isolation system, analysis transport, vibration isolation rate, vibration are obtained
Grade drop, insertion loss etc. subtract anti-vibration performance.Examination mounting condition and analog stimulus can also be provided by test specimen for dynamic vibration absorber, obtained
The dynamic characteristic parameters such as intrinsic frequency, dynamic stiffness, damping ratio are taken, vibration insertion loss when analyzing with/without bump leveller, prediction is inhaled
Vibration performance.It can also be debugged for matching and debugging, the Algorithm of Active Control of system parameter and optimization design provides guidance and verifying, improved
The success rate of active/passive damping element exploitation.
A specific embodiment is only illustrated above, but as long as being carried out using the device of the invention principle, constructing plan
Test, no matter scheme is what shape, size, all within protection scope of the present invention.
Claims (5)
1. a kind of adjustable double-deck vibrating isolation system vibration mechine, characterized in that including vibration source equipment, dynamic vibration absorber, equipment
Vibration isolator, raft body, isolation-base, foundation framework, T-slot；The foundation framework is mounted in T-slot, and the raft body is located at
Above foundation framework；Vibration source equipment is located above raft body；Isolation-base is mounted between raft body and foundation framework, equipment vibration isolation
Device is mounted between vibration source equipment and raft body；Dynamic vibration absorber is installed on vibration source equipment and/or raft body；
Raft body includes the big raft body and small raft body to be linked together side by side by bolt, is provided with raft on big raft body and small raft body
The big counterweight of body and raft body miniweights；Several cavitys for being used to load the big counterweight of raft body or raft body miniweights are equipped with inside raft body,
It is bolted connection between the big counterweight of raft body or raft body miniweights and raft body；Raft body is equipped with several for installing equipment
The installation hole location of vibration isolator or isolation-base；Dynamic vibration absorber includes dynamic vibration absorber one and dynamic vibration absorber two, and power is inhaled
Mode is bolted for vibration device one or bonding way is mounted in vibration source equipment, and dynamic vibration absorber two passes through bolt connecting mode
Or bonding way is mounted on big raft body or small raft body.
2. adjustable double-deck vibrating isolation system vibration mechine according to claim 1, characterized in that further include for acquiring
Vibration signal and analysis subtract the vibration test system of anti-vibration performance and the frequency converter of connection vibration source equipment.
3. adjustable double-deck vibrating isolation system vibration mechine according to claim 1, characterized in that vibration source equipment includes vibration
Source, vibration source bottom plate, equipment counterweight, equipment rack；Equipment counterweight is mounted on equipment rack, and vibration source bottom plate is mounted on equipment counterweight
On, vibration source is mounted on vibration source bottom plate；The vibration source uses frequency conversion vibration motor or vibration excitor；Equipment counterweight is by multilayer mass block
It is formed by stacking；An entirety is bolted into the vibration source, vibration source bottom plate, equipment counterweight and equipment rack；Equipment vibration isolation
Device is mounted between equipment rack and raft body；Dynamic vibration absorber includes dynamic vibration absorber one and dynamic vibration absorber two, dynamic absorber
Mode is bolted in device one or bonding way is mounted on vibration source bottom plate, dynamic vibration absorber two by bolt connecting mode or
Bonding way is mounted on raft body.
4. adjustable double-deck vibrating isolation system vibration mechine according to claim 1, characterized in that further include transition board group
Part, the transition plates component include transition plates component one and transition plates component two, and transition plates component one includes being connected to set
The standby above and below upper transition plates one of vibration isolator and lower transition plates one；Transition plates component two includes being connected to basic vibration isolation
The above and below upper transition plates two of device and lower transition plates two；Equipment vibration isolator is connected by upper transition plates one and the fastening of vibration source equipment
It connects, be fastenedly connected by lower transition plates one with raft body；Below vibration source equipment and lifting device, the lifting are equipped with below raft body
Device is jack, is used under adjustable double-deck vibrating isolation system vibration mechine overall package state to equipment vibration isolator or base
Plinth vibration isolator carries out fast quick-detach and replacement；Isolation-base is fastenedly connected, with raft body by lower transition by upper transition plates two
Plate two is fastenedly connected with foundation framework.
5. a kind of adjustable double-deck vibrating isolation system vibration testing method, characterized in that set gradually foundation framework, raft from bottom to up
Body and vibration source equipment, isolation-base is mounted between foundation framework and raft body, and equipment vibration isolator is mounted on raft body and vibration
Between source device, dynamic vibration absorber is mounted on raft body and vibration source equipment, analog basis vibration isolator, equipment vibration isolator, power
The installation environment and working environment of bump leveller acquire vibration signal, obtain isolation-base, equipment vibration isolator, dynamic vibration absorber
Dynamic characteristic parameter, analysis subtracts anti-vibration performance and system frequency, and damage is inserted into vibration when analyzing with/without dynamic vibration absorber
It loses, predicts vibration absorbing performance；
It is tested using adjustable double-deck vibrating isolation system vibration mechine as claimed in claim 4, comprising the following steps:
Step 1: installation adjustable double-deck vibrating isolation system vibration mechine:
A, installation foundation rack: T-slot is placed, and foundation framework is installed in T-slot by bolt；
B, installation foundation vibration isolator: isolation-base is fastenedly connected by lower transition plates two with foundation framework, then basis every
Transition plates two is installed above vibration device；
C, raft body is installed: big raft body and small raft body are mounted by means of bolts in upper transition plates two, and by big raft body and small
Raft body is linked together side by side by bolt, has been bolted connection the big counterweight of raft body or raft on big raft body and small raft body
Body miniweights, raft body places raft body miniweights by two close end, the big counterweight of raft body is placed at raft body middle part；
D, equipment vibration isolator is installed: equipment vibration isolator being fastenedly connected by lower transition plates one with raft body, then in equipment vibration isolator
Transition plates one is installed above；
E, vibration source equipment is installed: equipment rack being fastenedly connected by bolt with upper transition plates one, installs and sets on equipment rack
Standby counterweight, vibration source bottom plate is installed on equipment counterweight, vibration source is installed on vibration source bottom plate, by vibration source, vibration source bottom plate, equipment counterweight
An entirety is bolted into equipment rack；
F, sensor is installed: in the junction or equipment vibration isolator of vibration source equipment and equipment vibration isolator and junction, the base of raft body
The company of plinth vibration isolator and the junction of raft body or the junction of isolation-base and foundation framework, dynamic vibration absorber and vibration source equipment
Connect the junction installation force snesor at place, dynamic vibration absorber and raft body；In vibration source equipment close to equipment vibration isolator and raft body, tight
The raft body of adjacent isolation-base and foundation framework, close to installing in the vibration source equipment of dynamic vibration absorber or raft body, dynamic vibration absorber
Vibration acceleration sensor or displacement sensor；
G, vibration test system and frequency converter are installed: frequency converter is connected into vibration source equipment；Vibration test system is installed and is connected
It is good；
Step 2: starting adjustable double-deck vibrating isolation system vibration mechine passes through vibration excitor power amplifier or variant-frequency vibration electricity
Machine eccentric massblock adjusts the exciting force size of vibration source, and the vibration working frequency of vibration source is adjusted by frequency converter, and it is fixed to implement
Frequently, frequency sweep, frequency multiplication or random excitation, then vibration signal is acquired by vibration test system, obtain isolation-base, equipment vibration isolation
The dynamic characteristic parameter of device, dynamic vibration absorber；
Step 3: anti-vibration performance and vibrating isolation system are subtracted by vibration test system analysis foundation vibration isolator and equipment vibration isolator
Intrinsic frequency；The intrinsic frequency of vibration insertion loss when analysis is with/without dynamic vibration absorber and dynamic absorber system, prediction
Vibration absorbing performance；Complete adjustable double-deck vibrating isolation system vibration test.
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| CN200949633Y (en) * | 2006-07-10 | 2007-09-19 | 中国舰船研究设计中心 | Adjustable mass ratio double layer vibration isolator |
| CN204008165U (en) * | 2014-06-17 | 2014-12-10 | 江苏省镇江船厂（集团）有限公司 | Watercraft engine room subsidiary engine equipment vibration isolation analogue means |
| CN104713721B (en) * | 2015-04-10 | 2017-06-16 | 株洲时代新材料科技股份有限公司 | Vibration isolator dynamic performance testing experiment platform and its method of testing |
| CN105065469B (en) * | 2015-08-12 | 2017-10-24 | 中国舰船研究设计中心 | A kind of equipment base of adjustable rigidity and height |
| CN205175642U (en) * | 2015-12-03 | 2016-04-20 | 株洲时代新材料科技股份有限公司 | Bilayer and individual layer vibration isolation system vibration test bench with adjustable |
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