CN106840559A - A kind of adjustable individual layer and double-layer vibration isolating system vibration mechine and test method - Google Patents
A kind of adjustable individual layer and double-layer vibration isolating system vibration mechine and test method Download PDFInfo
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Abstract
The invention discloses a kind of adjustable individual layer and double-layer vibration isolating system vibration mechine and test method.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 arranged between raft body and foundation framework, and equipment vibration isolator is arranged 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 analog basis vibration isolator, equipment vibration isolator, the installation environment and working environment of dynamic vibration absorber, collection vibration signal, obtain vibration isolator, the dynamic characteristic parameter of dynamic vibration absorber, analysis subtracts anti-vibration performance, vibration insertion loss during with/without dynamic vibration absorber is analyzed, vibration absorbing performance is predicted.The present invention can simultaneously carry out the performance test of double-layered isolator and dynamic vibration absorber, can gather and analyze vibration acceleration, displacement and force signal, and the loading force that vibration isolator and dynamic vibration absorber are transmitted.
Description
Technical field
Vibration test technical field the present invention relates to subtract vibrating isolation system.
Background technology
Vibration is one of most common phenomenon of nature, and in many cases, vibration is considered as negative factor.For example, vibration can influence precision equipment machining accuracy, aggravate component fatigue and abrasion, shorten machine service life；Vibration is also possible to cause the large deformation of structure to destroy, and causes the accident；Can also influence people at car and boat, cabin and the machine operation etc. comfortableness under environment, or even harm people health.
Vibration damping generally has two kinds of measures, and one is the vibration that equipment itself is reduced by the reasonable design of plant equipment.Two is to be absorbed on route of transmission and isolate vibration, so as to reduce the energy that mechanical oscillation are outwards propagated as far as possible.At present the vibration of plant equipment is reduced frequently with the method for passive vibration isolation, various isolation mountings are installed i.e. between vibration source and pedestal, such as single-layer partiting polarization device, double-deck Buoyant Raft Shock-resistant System, can also install dynamic vibration absorber in equipment and pedestal, absorb and consumption vibration equipment energy.If inserting a spring-mass element in single-layer partiting polarization system, just turn into a double-layer vibration isolating system, it is mainly made up of two-layer vibration isolator and middle raft body, and middle raft weight and the vibration isolating effect that double-layer vibration isolating system can be influenceed by the ratio of device for vibration insutation quality.Compared to single-layer partiting polarization system, the vibration isolating effect of double-layer vibration isolating system is more superior, it is adaptable to the field of the strict control of vibration noise requirement.
Vibration isolator and dynamic vibration absorber are for controlling vibration source to vibrate and reduce the conventional measure of vibration transmission, one being collectively constituted with vibration source equipment and pedestal and subtracting vibrating isolation system, the system has high requirements in design to quality, rigidity and the isoparametric Proper Match tool of damping.Subtract to accurately test and the dynamic property of vibrating isolation system and subtract vibration isolating effect, vibration test can be carried out by building in laboratory test-bed and realized.Vibration mechine is for the testing equipment in experiment lab simulation indeed vibrations environmental effect, in order to be able to realize assembling, exciting and the Test Data Collecting of double-layer vibration isolating system and dynamic vibration absorber system, polytype vibration isolator and bump leveller can be common to again simultaneously, its special and strict requirements has been built to testing stand.
Excitation refers to the external force of the system that acts on（Or other inputs）, system is produced response in some way.Response refers to the output quantity of system.Transport refers to the dimensionless complex ratio of the response with excitation of system forced vibration.Vibration transfer ratioTRefer to the ratio between the component vibration after vibration isolation and the component vibration before vibration isolation.Vibration isolation rateη=（1-T）*100%.
Prior art relates generally to the isolation mounting for solving specific vibration problem, and not for the universal test stand for subtracting vibrating isolation system, and the parameter such as the quality of most technical schemes, barycenter, rigidity and installation site can not be adjusted.Such as publication No. is the Business Machine equipment elasticity basis buoyant raft shock-resistant system of CN102644694A, and publication No. is a kind of floating raft type double-layer isolation device of CN201103649Y, it is installed in the plant equipment of real ship or heat exchange station, it is made up of two-layer vibration isolator and middle raft body, after design typification, lack the function of systematic parameter adjustment, the specific vibration isolator under specific occasion is can be only applied to, 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 intermediate mass and adjust by loading graininess or powdered substance in quality cavity, although possessing the function of adjusting raft weight, but the part mass is not rigidly connected integrally with raft body, under dither environment can not with raft body synchronously undertake vibrational energy, system vibration can be influenceed to transmit and power distribution properties, and the device is designed again for a certain application, equipment quality, excited frequency, raft body size, the parameter such as housing rigidity and vibration isolator can not be adjusted, dynamic vibration absorber performance test can not be used for, can not thus be used as universal test stand.
Prior art has the following disadvantages：
1. prior art is the isolation mounting for being applied to some specific occasions, is installed under plant equipment normal operation environment, it is impossible to used as the general vibration mechine in laboratory；
2. the performance test of double-layered isolator and dynamic vibration absorber can not simultaneously be carried out；
3. raft body size, quality and barycenter can not be adjusted；
4. vibration source equipment quality and excited frequency can not be adjusted；
5. the rigidity of foundation framework can not be adjusted；
6. prior art is only applicable to the vibration isolator of a certain class fixed interface size after design typification, and is not applied for the vibration isolator of various distinct interface sizes；
7. prior art does not include vibration test equipment, can not test the loading force that vibration isolator is transmitted.
The content of the invention
The invention provides a kind of adjustable individual layer and double-layer vibration isolating system vibration mechine and test method, its performance test that can carry out double-layer vibration isolating system and dynamic vibration absorber system, both can be with assay anti-vibration performance or vibration absorbing performance, or the matching and debugging and optimization design of systematic parameter provide and instruct and verify.
The technical scheme is that：A kind of adjustable double-deck vibrating isolation system vibration mechine, including vibration source equipment, dynamic vibration absorber, equipment vibration isolator, raft body, isolation-base, foundation framework, T-slot；The foundation framework is arranged in T-slot, and the raft body is located above foundation framework；Vibration source equipment is located above raft body；Isolation-base is arranged between raft body and foundation framework, and equipment vibration isolator is arranged between vibration source equipment and raft body；Dynamic vibration absorber is installed on vibration source equipment and/or raft body.
Described adjustable double-deck vibrating isolation system vibration mechine also includes subtracting the vibration test system of anti-vibration performance and the frequency converter of connection vibration source equipment for gathering vibration signal and analysis.
Vibration source equipment includes vibration source, vibration source base plate, equipment counterweight, equipment rack；Equipment counterweight is arranged on equipment rack, and vibration source base plate is arranged on equipment counterweight, and vibration source is arranged on vibration source base plate；The vibration source uses variant-frequency vibration motor or vibrator；Equipment counterweight is formed by stacking by multilayer mass；The vibration source, vibration source base plate, equipment counterweight and equipment rack are bolted into an entirety；Equipment vibration isolator is arranged between equipment rack and raft body；Dynamic vibration absorber includes dynamic vibration absorber one and dynamic vibration absorber two, and dynamic vibration absorber one is bolted mode or bonding way is arranged on vibration source base plate, and dynamic vibration absorber two is arranged on raft body by bolt connecting mode or bonding way.
Raft body includes the big raft body and small raft body that are linked together side by side by bolt, and the big counterweight of raft body and raft body miniweights are provided with big raft body and small raft body；Portion is provided with several for the cavity for loading the big counterweight of raft body or raft body miniweights in raft body, is bolted connection between the big counterweight of raft body or raft body miniweights and raft body；Raft body is provided with several is used to install the mounting hole site of equipment vibration isolator or isolation-base；Dynamic vibration absorber includes dynamic vibration absorber one and dynamic vibration absorber two, and dynamic vibration absorber one is bolted mode or bonding way is arranged in vibration source equipment, and dynamic vibration absorber two is arranged on big raft body or small raft body by bolt connecting mode or bonding way.
Described adjustable double-deck vibrating isolation system vibration mechine also includes transition board component, the transition board component includes transition board component one and transition board component two, and transition board component one includes being connected to the above and below upper rebound one of equipment vibration isolator and lower rebound one；Transition board component two includes being connected to the above and below upper rebound two of isolation-base and lower rebound two；Equipment vibration isolator is fastenedly connected by upper rebound one and vibration source equipment, is fastenedly connected with raft body by lower rebound one；Lifting device is equipped with below vibration source equipment and below raft body, the lifting device is jack, for carrying out fast quick-detach and replacing to equipment vibration isolator or isolation-base under adjustable double-deck vibrating isolation system vibration mechine overall package state；Isolation-base is fastenedly connected by upper rebound two and raft body, is fastenedly connected by lower rebound two and foundation framework.
The junction or equipment vibration isolator of the vibration source equipment and equipment vibration isolator are provided with force snesor with the junction of the junction, dynamic vibration absorber and raft body of the junction of raft body, the junction of the junction of isolation-base and raft body or isolation-base and foundation framework, dynamic vibration absorber and vibration source equipment；Vibration acceleration sensor or displacement transducer are mounted on the vibration source equipment close to equipment vibration isolator and raft body, the raft body and foundation framework close to isolation-base, the vibration source equipment close to dynamic vibration absorber or raft body, dynamic vibration absorber mass；The foundation framework is connected with T-slot by bolt or flexible member, and the flexible member is 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 vibration isolator, raft body, foundation framework, T-slot；The foundation framework is arranged in T-slot, and the raft body is arranged on foundation framework；Vibration source equipment is located above raft body；Equipment vibration isolator is arranged between vibration source equipment and raft body, and dynamic vibration absorber is provided with vibration source equipment and/or raft body.
A kind of adjustable individual 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 arranged in T-slot, and the raft body is located above foundation framework；Vibration source equipment is arranged on raft body；Isolation-base is arranged between raft body and foundation framework, and dynamic vibration absorber is provided with vibration source equipment and/or raft body.
A kind of adjustable double-deck vibrating isolation system vibration testing method, foundation framework is set gradually from bottom to up, raft body and vibration source equipment, isolation-base is arranged between foundation framework and raft body, equipment vibration isolator is arranged between raft body and vibration source equipment, dynamic vibration absorber is arranged on raft body and vibration source equipment, analog basis vibration isolator, equipment vibration isolator, the installation environment and working environment of dynamic vibration absorber, collection vibration signal, obtain isolation-base, equipment vibration isolator, the dynamic characteristic parameter of dynamic vibration absorber, analysis subtracts anti-vibration performance and system frequency, analyze vibration insertion loss during with/without dynamic vibration absorber, prediction vibration absorbing performance.
Described adjustable double-deck vibrating isolation system vibration testing method, is tested using above-mentioned adjustable double-deck vibrating isolation system vibration mechine, is comprised the following steps：
Step one：Adjustable double-deck vibrating isolation system vibration mechine is installed：
A, installation foundation frame：T-slot is placed, foundation framework is installed in T-slot by bolt；
B, installation foundation vibration isolator：Isolation-base is fastenedly connected by lower rebound two and foundation framework, then isolation-base it is installed above it is good on rebound two；
C, installation raft body：Big raft body and small raft body are mounted by means of bolts on upper rebound two, and big raft body and small raft body are linked together side by side by bolt, the big counterweight of raft body or raft body miniweights are bolted connection on big raft body and small raft body, raft body places raft body miniweights, raft body middle part and places the big counterweight of raft body near two ends；
D, installation equipment vibration isolator：Equipment vibration isolator is fastenedly connected by lower rebound one with raft body, then equipment vibration isolator it is installed above it is good on rebound one；
E, installation vibration source equipment：Equipment rack is fastenedly connected by bolt with upper rebound one, equipment counterweight is installed on equipment rack, vibration source base plate is installed on equipment counterweight, vibration source is installed on vibration source base plate, vibration source, vibration source base plate, equipment counterweight and equipment rack are bolted into an entirety；
F, install sensor：Force snesor is installed in the junction of the junction, dynamic vibration absorber and raft body of the junction of the junction or equipment vibration isolator of vibration source equipment and equipment vibration isolator and raft body, the junction of the junction of isolation-base and raft body or isolation-base and foundation framework, dynamic vibration absorber and vibration source equipment；Installation vibration acceleration sensor or displacement transducer on the position such as the vibration source equipment close to equipment vibration isolator and raft body, the raft body and foundation framework close to isolation-base, the vibration source equipment close to dynamic vibration absorber or raft body, dynamic vibration absorber；
G, installation vibration test system and frequency converter：Frequency converter is connected into vibration source equipment；Vibration test system is installed and is connected；
Step 2：Start adjustable double-deck vibrating isolation system vibration mechine, the exciting force size of vibration source is adjusted by vibrator power amplifier or variant-frequency vibration motor eccentric massblock, and the vibration working frequency of vibration source is adjusted by frequency converter, implement fixed frequency, frequency sweep, frequency multiplication or random excitation, vibration signal is gathered by vibration test system again, isolation-base, equipment vibration isolator, the dynamic characteristic parameter of dynamic vibration absorber is obtained；
Step 3：By vibration test system analysis foundation vibration isolator and the intrinsic frequency for subtracting anti-vibration performance and vibrating isolation system of equipment vibration isolator；The intrinsic frequency of vibration insertion loss and dynamic absorber system when analysis is with/without dynamic vibration absorber, predicts vibration absorbing performance；Complete adjustable double-deck vibrating isolation system vibration test.
Advantages of the present invention：1. specific occasion is not limited to, can be used as the general vibration mechine in laboratory.2. the performance test of double-layered isolator and dynamic vibration absorber can simultaneously be carried out.3. can be used as double-layer vibration isolating system to use, also can be assembled as single-layer partiting polarization system is used.4. raft body size, raft weight, the raft constitution heart, vibration source equipment quality, exciting force size, direction of excitation, excited frequency, foundation framework rigidity can be adjusted.5. it is rigidly connected between counterweight and raft body, does not influence system vibration to transmit and Energy distribution.6. contain transition connecting apparatus, can be suitably used for the vibration isolator and dynamic vibration absorber of various distinct interface sizes, and installation number and installation site can be adjusted.7. vibration test equipment is contained, vibration acceleration, displacement, rotating speed and force signal, and the loading force that vibration isolator and dynamic vibration absorber are transmitted can be gathered and analyze.
Brief description of the drawings
Fig. 1 is the structural representation of the adjustable double-deck vibrating isolation system vibration mechine in the embodiment of the present invention.
Fig. 2 is the raft body internal structure schematic diagram in the embodiment of the present invention.
Fig. 3 is the mounting structure schematic diagram of the transition board component one in the embodiment of the present invention.
Fig. 4 is the mounting structure schematic diagram of the transition board component two in the embodiment of the present invention.
Description of reference numerals：Vibration source 1, vibration source base plate 2, equipment counterweight 3, equipment rack 4, dynamic vibration absorber 1, upper rebound 1, equipment vibration isolator 7, lower rebound 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 rebound 2 14, isolation-base 15, lower rebound 2 16, foundation framework 17, T-slot 18.
Specific embodiment
The invention will be further described with reference to the accompanying 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 base plate 2, equipment counterweight 3, equipment rack 4, dynamic vibration absorber 1, upper rebound 1, equipment vibration isolator 7, lower rebound 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 rebound 2 14, isolation-base 15, lower rebound 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, by test specimen, can be needed to replace not same piece or type according to experiment.
As shown in Figure 1, a part is rigidly connected into by bolt between vibration source 1, vibration source base plate 2, equipment counterweight 3 and equipment rack 4, for simulating the quality and working frequency of actual machine equipment, wherein vibration source 1 can be realized using variant-frequency vibration motor, it would however also be possible to employ professional vibrator is realized；Equipment counterweight 3 is formed by stacking by multilayer mass, and its weight can be adjusted according to the load-bearing requirements situation of equipment vibration isolator 7.Dynamic vibration absorber 1 is arranged on vibration source base plate 2 by modes such as bolt or bondings, for controlling machine vibration equipment, and the performance parameter and shock attenuation result of dynamic vibration absorber is evaluated by vibration test.As shown in figures 1 and 3, transition board component one includes being connected to the above and below upper rebound one of equipment vibration isolator and lower rebound one.Equipment vibration isolator 7 is fastenedly connected by upper rebound 1 with equipment rack 4, and be fastenedly connected with big raft body 9 or small raft body 10 by lower rebound 1, for xegregating unit vibration outwards transmission, and the performance parameter and vibration isolating effect for passing through vibration test valuator device vibration isolator, wherein go up rebound 1 and lower rebound 1 plays the adapter effect that connection is installed in transition, various distinct interface size vibration isolators can be met to install, needed to redesign and changed also dependent on new installation.Additionally, being designed by mounting interface, the quantity and installation site of equipment vibration isolator can realize regulation.Vibration source equipment lifting is facilitated into the installation and dismounting of equipment vibration isolator using lifting devices such as jack below equipment rack 4.Force snesor is installed between upper rebound 1 and equipment vibration isolator 7, the dynamic load size and spectral characteristic that can be transmitted with test equipment vibration isolator.
As shown in Fig. 2 raft body is made up of big raft body 9, small raft body 10, the big counterweight 11 of raft body and raft body miniweights 12（Constitute raft body component, i.e. raft body）, rigidly it is fastenedly connected by bolt between big raft body 9, small raft body 10, the big counterweight 11 of raft body and raft body miniweights 12, also two raft bodies can be split to be used alone, so as to the raft body for there are three kinds of different specification sizes is available and uses.Counterweight has 2 kinds of counterweights of size specification：The big counterweight 11 of raft body and raft body miniweights 12, are capable of achieving weight coarse adjustment and fine tuning.Raft body inner space is divided into many cavitys, inside optionally loads counterweight, raft body puts raft body miniweights, the middle placement big counterweight of raft body near two ends, so as to can significantly adjusting raft weight, can also adjusting raft body centroid position, and it is fastenedly connected by bolt assembly between each counterweight and raft body, to ensure that counterbalance mass is under vibration entirety with raft weight.Multiple vibration isolator is reserved on raft body（Including equipment vibration isolator and isolation-base）Position of mounting hole, installation number and position can change as needed.As shown in figure 1, dynamic vibration absorber 2 13 is arranged on big raft body 9 or small raft body 10 by modes such as bolt or bondings, for controlling raft body to vibrate, and the performance parameter and shock attenuation result of dynamic vibration absorber are evaluated by vibration test.
The parameters such as raft body size/quality/barycenter, vibration source equipment quality/frequency/amplitude, foundation framework support stiffness can realize regulation；The type of equipment vibration isolator, isolation-base and dynamic vibration absorber, installation number and position can change.
As shown in Figure 1 and Figure 4, transition board component two includes being connected to the above and below upper rebound two of isolation-base and lower rebound two.Isolation-base 15 is fastenedly connected by upper rebound 2 14 with big raft body 9 or small raft body 10, and be fastenedly connected with foundation framework 17 by lower rebound 2 16, vibrated to basis transmission for isolating raft body, and the performance parameter and vibration isolating effect of isolation-base are evaluated by vibration test, wherein go up rebound 2 14 and lower rebound 2 16 plays the adapter effect that connection is installed in transition, disclosure satisfy that various distinct interface size vibration isolators are installed, it is also possible to need to redesign and change according to new installation.Additionally, being designed by mounting interface, the quantity and installation site of isolation-base can realize regulation.Raft body lifting is facilitated into the installation and dismounting of isolation-base using lifting devices such as jack below big raft body 9 and small raft body 10.Dynamic force snesor is installed between upper rebound 2 14 and isolation-base 15, dynamic load size and spectral characteristic that isolation-base 15 is transmitted can be tested.
As shown in Figure 1, in order to be able to adjust the rigidity of foundation framework 17, foundation framework can be rigidly connected using bolt as needed with the connected mode of T-slot 18, it would however also be possible to employ the flexible member of required rigidity is attached, for example caoutchouc elasticity backing plate, steel spring, air spring etc..
When vibration test is carried out, in vibration source equipment, vibration isolator（Including equipment vibration isolator and isolation-base）Upper and lower side, dynamic vibration absorber（Including dynamic vibration absorber one and dynamic vibration absorber two）Vibration acceleration sensor or displacement transducer are installed in the positions such as mass, raft body, foundation framework, 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 frame（Including foundation framework and equipment rack）Or force snesor is installed at the position such as raft body junction.The exciting force size of vibration source 1 is adjusted by professional vibrator power amplifier or variant-frequency vibration motor eccentric massblock, and the vibration working frequency of vibration source 1 is adjusted by frequency converter, can implement to determine frequency, frequency sweep, frequency multiplication or random excitation, vibration signal is gathered by vibration test system again, so as to analyze the anti-vibration performance that subtracts of vibrating isolation system and dynamic vibration absorber system, and matching and debugging for systematic parameter, Algorithm of Active Control debugging and optimization design provide guidance and checking.
The present invention possesses vibration isolator performance test function, can be assembled into buoyant raft double-layered isolator system and is tested, and now raft body is in two-layer vibration isolator（Equipment vibration isolator and isolation-base）Between；Also it can be assembled into monolayer device vibration isolator system to be tested, now raft body is rigidly connected with foundation framework；Individual layer isolation-base system can also be assembled into be tested, now vibration source equipment is rigidly connected with raft body.
The present invention possesses dynamic vibration absorber performance test function, and dynamic vibration absorber can be arranged on vibration source equipment under-chassis, can be also arranged on raft body.The system core parameter of vibration mechine can realize regulation, including vibration source equipment quality, exciting force size, 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 of point raft bodies of specification（Big raft body or small raft body）Use, also can be assembled as raft body is used.Portion can load counterweight in raft body, and quality and barycenter can be adjusted significantly.The installation number and installation site of vibration isolator and dynamic vibration absorber can realize regulation.Force sensor is arranged in the junction of vibration isolator and raft body or frame, and force snesor is arranged in the junction of dynamic vibration absorber and frame or raft body, the power that vibration isolator or bump leveller are transmitted, analysis system transmissibility can be tested.By transition connecting plate（Transition board component）Design, makes testing stand can be suitably used for the installation of the vibration isolator or dynamic vibration absorber of various distinct interface Dimension Types.
The present invention is directed to prior art shortcoming, propose new solution, it is related to a kind of vibration test table apparatus for subtracting vibrating isolation system, more particularly to a kind of double-deck buoyant raft shock-resistant system testing stand, the parameters such as quality, barycenter, rigidity, the frequency of the pilot system can realize regulation, three kinds of various sizes of raft bodies can be combined or split into, equipped with vibration test equipment, the performance test of double-layered isolator and dynamic vibration absorber can be simultaneously carried out, the vibration isolator of distinct interface size and bearing capacity is also can be suitably used for.
Table apparatus involved in the present invention can simulate the installation environment of the equipment vibration isolator such as ship, vehicle, Wind turbine, for single-layer partiting polarization device and double-deck floating raft vibration isolation device system etc. provide examination mounting condition by test specimen, the drive characteristic of the equipment such as simulated machine, pump, obtain the dynamic characteristic parameters such as intrinsic frequency, dynamic stiffness, the damping of vibrating isolation system, analysis transport, vibration isolation rate, vibration level drop, insertion loss etc. and subtract anti-vibration performance.Examination mounting condition and analog stimulus can also be provided by test specimen for dynamic vibration absorber, obtain the dynamic characteristic parameters such as intrinsic frequency, dynamic stiffness, damping ratio, analyze vibration insertion loss during with/without bump leveller, predict vibration absorbing performance.Guidance and checking can also be provided for the matching and debugging of systematic parameter, Algorithm of Active Control debugging and optimization design, improve the success rate of active/passive damping element exploitation.
Below a specific embodiment is only illustrated, but as long as being tested using principle of device of the invention, constructing plan, no matter scheme is what shape, size, all within protection scope of the present invention.
Claims (10)
1. a kind of adjustable double-deck vibrating isolation system vibration mechine, it is 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 arranged in T-slot, and the raft body is located above foundation framework；Vibration source equipment is located above raft body；Isolation-base is arranged between raft body and foundation framework, and equipment vibration isolator is arranged between vibration source equipment and raft body；Dynamic vibration absorber is installed on vibration source equipment and/or raft body.
2. adjustable double-deck vibrating isolation system vibration mechine according to claim 1, it is characterized in that, also including subtracting the vibration test system of anti-vibration performance and the frequency converter of connection vibration source equipment for gathering vibration signal and analysis.
3. adjustable double-deck vibrating isolation system vibration mechine according to claim 1, it is characterized in that, vibration source equipment includes vibration source, vibration source base plate, equipment counterweight, equipment rack；Equipment counterweight is arranged on equipment rack, and vibration source base plate is arranged on equipment counterweight, and vibration source is arranged on vibration source base plate；The vibration source uses variant-frequency vibration motor or vibrator；Equipment counterweight is formed by stacking by multilayer mass；The vibration source, vibration source base plate, equipment counterweight and equipment rack are bolted into an entirety；Equipment vibration isolator is arranged between equipment rack and raft body；Dynamic vibration absorber includes dynamic vibration absorber one and dynamic vibration absorber two, and dynamic vibration absorber one is bolted mode or bonding way is arranged on vibration source base plate, and dynamic vibration absorber two is arranged on raft body by bolt connecting mode or bonding way.
4. adjustable double-deck vibrating isolation system vibration mechine according to claim 1, it is characterized in that, raft body includes the big raft body and small raft body that are linked together side by side by bolt, and the big counterweight of raft body and raft body miniweights are provided with big raft body and small raft body；Portion is provided with several for the cavity for loading the big counterweight of raft body or raft body miniweights in raft body, is bolted connection between the big counterweight of raft body or raft body miniweights and raft body；Raft body is provided with several is used to install the mounting hole site of equipment vibration isolator or isolation-base；Dynamic vibration absorber includes dynamic vibration absorber one and dynamic vibration absorber two, and dynamic vibration absorber one is bolted mode or bonding way is arranged in vibration source equipment, and dynamic vibration absorber two is arranged on big raft body or small raft body by bolt connecting mode or bonding way.
5. adjustable double-deck vibrating isolation system vibration mechine according to claim 1, it is characterized in that, also include transition board component, the transition board component includes transition board component one and transition board component two, and transition board component one includes being connected to the above and below upper rebound one of equipment vibration isolator and lower rebound one；Transition board component two includes being connected to the above and below upper rebound two of isolation-base and lower rebound two；Equipment vibration isolator is fastenedly connected by upper rebound one and vibration source equipment, is fastenedly connected with raft body by lower rebound one；Lifting device is equipped with below vibration source equipment and below raft body, the lifting device is jack, for carrying out fast quick-detach and replacing to equipment vibration isolator or isolation-base under adjustable double-deck vibrating isolation system vibration mechine overall package state；Isolation-base is fastenedly connected by upper rebound two and raft body, is fastenedly connected by lower rebound two and foundation framework.
6. adjustable double-deck vibrating isolation system vibration mechine according to claim 1, it is characterized in that, the junction or equipment vibration isolator of the vibration source equipment and equipment vibration isolator are provided with force snesor with the junction of the junction, dynamic vibration absorber and raft body of the junction of raft body, the junction of the junction of isolation-base and raft body or isolation-base and foundation framework, dynamic vibration absorber and vibration source equipment；Vibration acceleration sensor or displacement transducer are mounted on the vibration source equipment close to equipment vibration isolator and raft body, the raft body and foundation framework close to isolation-base, the vibration source equipment close to dynamic vibration absorber or raft body, dynamic vibration absorber mass；The foundation framework is connected with T-slot by bolt or flexible member, and the flexible member is caoutchouc elasticity backing plate, steel spring or air spring.
7. a kind of adjustable monolayer device vibration isolator system vibration testing stand, it is characterized in that, including vibration source equipment, dynamic vibration absorber, equipment vibration isolator, raft body, foundation framework, T-slot；The foundation framework is arranged in T-slot, and the raft body is arranged on foundation framework；Vibration source equipment is located above raft body；Equipment vibration isolator is arranged between vibration source equipment and raft body, and dynamic vibration absorber is provided with vibration source equipment and/or raft body.
8. a kind of adjustable individual layer isolation-base system vibration testing stand, it is characterized in that, including vibration source equipment, dynamic vibration absorber, raft body, isolation-base, foundation framework, T-slot；The foundation framework is arranged in T-slot, and the raft body is located above foundation framework；Vibration source equipment is arranged on raft body；Isolation-base is arranged between raft body and foundation framework, and dynamic vibration absorber is provided with vibration source equipment and/or raft body.
9. a kind of adjustable double-deck vibrating isolation system vibration testing method, it is characterized in that, foundation framework is set gradually from bottom to up, raft body and vibration source equipment, isolation-base is arranged between foundation framework and raft body, equipment vibration isolator is arranged between raft body and vibration source equipment, dynamic vibration absorber is arranged on raft body and vibration source equipment, analog basis vibration isolator, equipment vibration isolator, the installation environment and working environment of dynamic vibration absorber, collection vibration signal, obtain isolation-base, equipment vibration isolator, the dynamic characteristic parameter of dynamic vibration absorber, analysis subtracts anti-vibration performance and system frequency, analyze vibration insertion loss during with/without dynamic vibration absorber, prediction vibration absorbing performance.
10. adjustable double-deck vibrating isolation system vibration testing method according to claim 9, it is characterized in that, tested using the adjustable double-deck vibrating isolation system vibration mechine any one of claim 1 to 6, comprise the following steps：
Step one：Adjustable double-deck vibrating isolation system vibration mechine is installed：
A, installation foundation frame：T-slot is placed, foundation framework is installed in T-slot by bolt；
B, installation foundation vibration isolator：Isolation-base is fastenedly connected by lower rebound two and foundation framework, then isolation-base it is installed above it is good on rebound two；
C, installation raft body：Big raft body and small raft body are mounted by means of bolts on upper rebound two, and big raft body and small raft body are linked together side by side by bolt, the big counterweight of raft body or raft body miniweights are bolted connection on big raft body and small raft body, raft body places raft body miniweights, raft body middle part and places the big counterweight of raft body near two ends；
D, installation equipment vibration isolator：Equipment vibration isolator is fastenedly connected by lower rebound one with raft body, then equipment vibration isolator it is installed above it is good on rebound one；
E, installation vibration source equipment：Equipment rack is fastenedly connected by bolt with upper rebound one, equipment counterweight is installed on equipment rack, vibration source base plate is installed on equipment counterweight, vibration source is installed on vibration source base plate, vibration source, vibration source base plate, equipment counterweight and equipment rack are bolted into an entirety；
F, install sensor：Force snesor is installed in the junction of the junction, dynamic vibration absorber and raft body of the junction of the junction or equipment vibration isolator of vibration source equipment and equipment vibration isolator and raft body, the junction of the junction of isolation-base and raft body or isolation-base and foundation framework, dynamic vibration absorber and vibration source equipment；Vibration acceleration sensor or displacement transducer are installed in the vibration source equipment close to equipment vibration isolator and raft body, the raft body and foundation framework close to isolation-base, the vibration source equipment close to dynamic vibration absorber or raft body, dynamic vibration absorber；
G, installation vibration test system and frequency converter：Frequency converter is connected into vibration source equipment；Vibration test system is installed and is connected；
Step 2：Start adjustable double-deck vibrating isolation system vibration mechine, the exciting force size of vibration source is adjusted by vibrator power amplifier or variant-frequency vibration motor eccentric massblock, and the vibration working frequency of vibration source is adjusted by frequency converter, implement fixed frequency, frequency sweep, frequency multiplication or random excitation, vibration signal is gathered by vibration test system again, isolation-base, equipment vibration isolator, the dynamic characteristic parameter of dynamic vibration absorber is obtained；
Step 3：By vibration test system analysis foundation vibration isolator and the intrinsic frequency for subtracting anti-vibration performance and vibrating isolation system of equipment vibration isolator；The intrinsic frequency of vibration insertion loss and dynamic absorber system when analysis is with/without dynamic vibration absorber, predicts vibration absorbing performance；Complete adjustable double-deck vibrating isolation system vibration test.
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