CN209296268U - Novel vibration table - Google Patents
Novel vibration table Download PDFInfo
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- CN209296268U CN209296268U CN201920187770.XU CN201920187770U CN209296268U CN 209296268 U CN209296268 U CN 209296268U CN 201920187770 U CN201920187770 U CN 201920187770U CN 209296268 U CN209296268 U CN 209296268U
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- stage body
- vibration table
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Abstract
Novel vibration table provided by the utility model is related to servo the field of test technology, overcomes the technical problem that shake table noise is big in the prior art.The shake table includes pedestal (1), stage body (2) and the multiple linear electric machine components being mounted on the pedestal (1), the stage body (2) connect with multiple linear electric machine components respectively, wherein, the stage body (2), it is tested for placing test block, and to the performance of the test block；It is circumferential that multiple linear electric machine components are mounted on the stage body (2), and is rotatablely connected with the stage body (2), and the stage body (2) is made to generate vibration；The linear electric machine component is controlled by external remote control, by external remote control control multiple linear electric machine components start or stop with realize to the test block test.Performance and function of the utility model to improve existing shake table, meet shake table to the requirement of experiment of test block precision and efficiency of detecting.
Description
Technical field
The utility model relates to machines to be related to servo the field of test technology, in particular to a kind of Novel vibration table.
Background technique
Shake table, also known as vibration exciter or vibration machine are a kind of using electronic, electro-hydraulic pressure, piezoelectricity or other are former
Reason obtains the device of mechanical oscillation.Its working principle is that pumping signal is inputted a coil being placed in magnetic field, driving and
The workbench that coil is connected.Electrodynamic vibration shaker is mainly used for the vibration measurement of 200Hz or more.In 200Hz frequency model below
It encloses, is often used electrohydraulic shaker, at this moment the property of vibration signal is controlled by electric servo system.Fluid power system can provide
Biggish displacement and impact force.Shake table can be used for the calibration of accelerometer, it can also be used to which the vibration performance of electro-acoustic element is surveyed
Examination and other vibration tests.For different tester and technical indicator, it should be noted that select different structure and excitation range
Shake table.Shake table in the prior art tests components using hydraulic vibration gen or electromagnetic vibration generator system.
The present inventor, the discovery prior art at least have the following deficiencies:
1. electromagnetic vibration generator system in the prior art is arranged according to electromagnetic induction principle, the constant magnetic at electrical conductor
By the effect by power in, vibration will be generated when passing to alternating current in semiconductor.The driving coil of shake table is formally in
In the gap of one high magnetic flux density, when the vibration signal of needs generates and from signal generator or vibration controller through power
It is led in driving coil after amplifier amplification, at this moment shake table will generate the vibrational waveform of needs, and defect is first is that test
Impulse stroke it is shorter, typically not greater than 70mm；Second is that spatial volume occupied by its structure is larger；Third is that multiaxis couples operating condition
Poor, no more than 3 axis are fourth is that power-frequency is tested, low frequency performance generally in 1Hz or more commonly used in high frequency performance
Difference.
2. hydraulic vibration gen in the prior art is both needed to need to be equipped with hydraulic oil source using hydraulic cylinder, hydraulic cylinder works are made an uproar
The phenomenon that sound is big, generally needs to be placed in Code in Hazardous Special Locations and uses, and it is easy to appear oil leaks, and its energy conversion efficiency
It is low, and maintenance cost is high, and frequency of maintenance is high.
In view of this, special propose utility model.
Utility model content
In view of this, providing a kind of six novel freedom the purpose of the utility model is to overcome the deficiencies in the prior art
Shake table is spent, the technical problem that shake table noise is big in the prior art is overcome.The utility model creation has many beneficial effects, in detail
See below narration.
The technical scheme adopted by the utility model to solve the technical problem is as follows: providing a kind of Novel vibration table, including base
Seat, stage body and the multiple linear electric machine components being mounted on the pedestal, the stage body respectively with multiple linear electric machine groups
Part connection, wherein the stage body is tested for placing test block, and to the performance of the test block；It is multiple described linear
It is circumferential that electric machine assembly is mounted on the stage body, and is rotatablely connected with the stage body, and the stage body is made to generate vibration；The linear electricity
Thermomechanical components are controlled by external remote control, control starting or stoping for multiple linear electric machine components by external remote control
The test block is tested with realizing.
In a preferred or optional embodiment, the quantity of multiple linear electric machine components is 3 groups, to realize
The performance test of test block different directions on three-dimensional space is stated,
Or the quantity of multiple linear electric machine components is 2 groups, to realize that the test block is different on two-dimensional space
The performance test in direction.
In a preferred or optional embodiment, the linear electric machine component includes guide rail, the cunning on the guide rail
Capable linear electric machine and connecting rod, in which:
The guide rail is mounted on the pedestal and stage body described in neighbour；
Described connecting rod one end and the stage body are hinged, and the other end is connect with the linear electric machine, in the linear electric machine
Driving is lower to drive the link motion, and the stage body is made to generate vibration.
In a preferred or optional embodiment, the limit that the linear electric machine slides is installed on the guide rail
Part.
It further include the servo controller being electrically connected with the linear electric machine in a preferred or optional embodiment,
The servo controller controls starting or stoping for the linear electric machine to receive the signal of the external remote control.
In a preferred or optional embodiment, the quantity of the linear electric machine is 3, and the shape of the guide rail is
The setting of " T " font structure, or, the quantity of the linear electric machine is 2, and the shape of the guide rail is linear structure setting.
Further include the counter-force mass member being mounted on the pedestal in a preferred or optional embodiment, reduces
The pedestal is lost in vibration acceleration caused by the stage body；The multiple linear electric machine component is mounted on the counter-force matter
It measures on part.
It further include the multiple preloading support storages being mounted in counter-force mass member in a preferred or optional embodiment
Gas tank, the preloading support air accumulator are connected with external inflation equipment, and the table top to the stage body keeps balance.
In a preferred or optional embodiment, which is characterized in that the linear electric machine is linear electric motor.
In a preferred or optional embodiment, external remote control is supervisory controller
The beneficial effects of the utility model are: the power output component of shake table in the prior art is replaced with linear electric machine
Component, the effect of linear electric machine component is first is that pipe-shape straight-line motor needs not move through intermediate conversion mechanism and directly generates straight line fortune
It is dynamic, structure is greatly simplified, movement inertia is reduced, and dynamic response performance and positioning accuracy greatly improve and improve reliability,
Cost has been saved, make to manufacture and has been safeguarded easier；Second is that being suitble to high-speed straight-line movement.Because the constraint of centrifugal force is not present,
Common material can also reach higher speed, thus motion parts are also just without friction and noise and transmission components are not ground
Damage can greatly reduce mechanical loss and reduce noise；Third is that can easily be accommodated and control, by adjusting voltage or frequency, or replacement
Secondary materials, available different speed, electromagnetic push, back and forth run occasion suitable for low speed；Fourth is that adaptable, straight line
The primary iron core of motor can be integral with epoxy resin envelope, has preferable anti-corrosion, humidity resistance, convenient in moist, dust
It is used in the environment of pernicious gas, and can be designed to various structures, meet the needs of different situations；Fifth is that can will be maximum
The impulse stroke of test improves 200mm, greatly improves to the range and precision of test block test.Pass through multiple linear electric machines
Component is connect with the stage body, becomes the support of stage body and the stage body is driven to generate vibration.Multiple linear electric machine components
It is controlled by external remote control, the starting or stoping to realize of multiple linear electric machine components is controlled by external remote control
The test block is tested, has the function that automation control, improves the convenience of test.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or the required attached drawing used is briefly described in description of the prior art, it should be apparent that, the accompanying drawings in the following description is only
Some embodiments of the utility model, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the Novel vibration table of the utility model；
Fig. 2 is the enlarged diagram of the linear electric machine component of the Novel vibration table of the utility model；
Fig. 3 is the Automatic Control Theory figure of the Novel vibration table of the utility model；
Fig. 4 is the operation principle schematic diagram of the Novel vibration table of the utility model；
Specific embodiment
To make the purpose of this utility model, technical solution and advantage are clearer, below by the technology to the utility model
Scheme is described in detail.Obviously, described embodiment is only utility model a part of the embodiment, rather than comprehensive
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Obtained every other embodiment belongs to the range that the utility model is protected.
Novel vibration table as shown in Figure 1, including pedestal 1 and multiple linear electric machine components for being mounted on pedestal 1 and its
Stage body 2, stage body 2 are connect with multiple linear electric machine components respectively, that is, multiple linear electric machine modular support stage bodies 2, and with stage body 2
It is rotatably connected, by the rotation of each stage body 2 so that stage body 2 is generated vibration and tested with the vibration performance to test block,
Test block can for space flight use or automobile or railway with etc. component, by stage body 2 detect test block intrinsic frequency, fixed frequency and
Fatigue endurance degree etc., whether test result is compared with GB standard qualified to detect test block.Multiple linear electric machine components are equal
It is even to be distributed in stage body 2 circumferentially, wherein stage body 2 tests the performance of test block for placing test block.It is multiple linear
It is circumferential that electric machine assembly is mounted on stage body 2, and is rotatablely connected with stage body 2, and stage body 2 is made to generate vibration.It may be noted that linear electric machine group
Part is controlled by external remote control, and external remote control can control multiple linear electric machine components and work at the same time, or only control
The work of partial linear motor controls the starting or stoping to realize to test of multiple linear electric machine components by external remote control
Part test.
As optional embodiment, the quantity of multiple linear electric machine components is 3 groups or 2 groups or 4 groups, preferably 3 groups, with reality
The performance test of existing test block different directions on three-dimensional space, that is, the test in three-dimensional space on the different directions of xyz, it is more
The quantity of a linear electric machine component is may be 2 groups, to realize the performance test of test block different directions on two-dimensional space.
As optional embodiment, as shown in Fig. 2, linear electric machine component include guide rail 31, slided on guide rail it is more
A linear electric machine 32 and connecting rod 33, in which: linear electric machine 32 is linear motor, and 32 linear motor of linear electric machine may be considered rotation
In a kind of deformation of configuration aspects, it can be regarded as a rotating electric machine and radially splits rotating motor, then even up differentiation
It forms.The characteristics of linear motor or effect: first is that structure is simple, since linear motor does not need fortune that rotation motion is in line
Dynamic attachment device, so that the structure of system itself is greatly simplified, weight and volume greatly declines, by with least
Amount of parts realizes linear drives, since component is few, without Mechanical Contact when movement, thus greatly reduces the mill of components
Damage only needs seldom even without maintenance, and the service life is longer；Second is that positioning accuracy is high, reaction speed is fast, high sensitivity, is servo-actuated
The place that property needs to move along a straight line fortunately, direct-drive may be implemented in linear motor, thus can eliminate intermediate link and be brought
Various position errors, therefore positioning accuracy is high, is such as controlled using microcomputer, then can also greatly improve the positioning accurate of whole system
Degree；Third is that driving force is generated in air gap, not any other friction other than linear motor guide rail can be substantially
Degree reduces noise；Fourth is that acceleration is very big, it is maximum up to 10g, and move steadily, operating can provide very wide linear velocity
Range of operation covers including from several microns to several meters per second；Fifth is that precision and repeatable accuracy are high, because eliminating influence precision
Intermediate link, the precision of system depends on position detecting element, has suitable feedback device up to submicron order.Linear motor
Its mover is easily able to be supported with magnetic suspension so that remained between mover and stator certain air gap without contacting,
This eliminates the need for the contact frictional resistance between fixed and moving son, thus greatly increases the sensitivity of system, rapidity and servo-actuated
Property, it can be achieved that non contact transmission power, mechanical friction loss is almost nil thus safe and reliable, the service life is long.
Guide rail 31 is fixedly mounted on stage body 2 on pedestal 1 on floor projection circumferential direction or outside, linear electric machine 32 and connecting rod 33
One end be fixedly connected, the other end of connecting rod 33 is rotatablely connected by spherical hinge with stage body 2, in general, link position setting exists
The peripheral side of stage body 2, and lug is arranged in the peripheral side of stage body 2 is equipped at the position of lug and connect with connecting rod 33
Spherical shape hinge.33 one end of connecting rod and stage body 2 are hinged, and the other end is connect with linear electric machine 32, is driven under the driving of linear electric machine 32
Connecting rod 33 moves, that is, linear motor sliding on guide rail 31 drives connecting rod 33 to act, and stage body 2 is made to generate vibration.It can be in platform
The multiple lugs of the circumferentially uniform installation in the top surface of body 2, spherical shape is cut with scissors at installation lug position, multiple connecting rods 33 with respectively with it is corresponding
Spherical shape be hinged, and stage body 2 is supported.Some or all of multiple linear electric machines 32 slide on guide rail 31, drive
Stage body 2 generates vibration.
As optional embodiment, the locating part 311 that linear electric machine 32 slides is installed on guide rail 31.Locating part
Effect is coasting distance of the better setting linear motor on guide rail 31, limits the maximum moving distance of linear electric machine, ensures
The safety of test and the precision of experiment.The maximum length of guide rail 31 can be designed as using linear motor by 200mm, increase test
Stroke and measuring accuracy.
It further include the servo controller 100 being electrically connected with linear electric machine 32, servo controller as optional embodiment
100 control starting or stoping for the linear electric machine 32 to receive the signal of the external remote control.Servo-driver is again
Referred to as " servo controller ", " servo amplifier " are a kind of controllers for controlling motor, and effect is similar to frequency converter and makees
For common alternating current motor, belong to a part of servo-system, is mainly used in high-precision positioning system.Generally by position
Set, three kinds of modes of speed and power control servo motor, realize the positioning of high-precision system, be currently the height of drive technology
Product is held, the prior art is belonged to.Servo controller 100 is connect using cable with linear electric machine 32, and installation site is chosen as
Installation is mounted on locating part 311 on the base or other positions are e.g. mounted on locating part 311, servo controller
100 one end are fixed on locating part 311, and the other end is connected by cable with linear electric machine 32, to simplify operation difficulty, are realized
Automation control, servo controller 100 are controlled by external remote control, the selection of external remote control, for example, PC control
Device issues operational order to servo controller 100 by manual operation supervisory controller, automatic operation is realized, such as Fig. 3 institute
Show, is the Automatic Control Theory figure of Novel vibration table, wherein capitalization represents the linear electric machine that different location is installed, by upper
Position machine controller control realizes the behaviour that multiple linear electric machines 32 all work at the same time or part works by servo controller 100
Make, completes the test to test block.
Further, the quantity of linear electric machine 32 is 3, and the shape of guide rail 31 is the setting of " T " font structure, or, line
Property motor 32 quantity be 2, the shape of guide rail 31 is that linear structure is arranged, and the quantity for being also possible to linear electric machine 32 is 4
A, the shape of guide rail 31 is the setting of " ten " font structure, and the setting of the different structure of guide rail 31 meets a variety of different experiment essences
The requirement of degree.
Further include the counter-force mass member 12 being mounted on pedestal 1 as optional embodiment, reduces produced by stage body 2
Vibration acceleration to pedestal 1 be lost.Guide rail 31 is fixed on above counter-force mass member 12, is tested, counter-force mass member 12
Generally metal block, for example, iron block or iron plate, and in the fixed multiple elastic components in 12 bottom surface of counter-force mass member, for example, damping bullet
Spring can reduce vibration acceleration caused by stage body 2 and pedestal 1 is lost.
Further, further include the multiple preloading support air accumulators 11 being mounted on pedestal 1, preload support air accumulator 11 with
External inflation equipment is connected, and the table top to stage body 2 keeps balance.The effect for preloading support air accumulator 11 is, in order to guarantee
The accuracy of test data of experiment, it is ensured that the stress before testing of pedestal 1 it is uniform.It preloads support air accumulator 11 and air pressure is provided
Power, cylinder power output is steady during guaranteeing experiment progress, can balance the quality of stage body and test block.Meanwhile it can will be multiple pre-
It carries support air accumulator 11 to be mounted in counter-force mass member 12, general installation site is as shown in Figure 2 or Figure 3, with 3 groups of linear electric machines
For component, the guide rail 31 of linear electric machine component is uniformly mounted on the circumferential direction of the floor projection in counter-force mass member 12 of stage body 2, in advance
It carries support air accumulator 11 and is mounted on 31 inside of guide rail, inside refers to, the center position of neighbour's counter-force mass member 12.Before testing
Whether horizontal is kept to counter-force mass member 12, further includes the multiple preloading support air accumulators 11 being mounted on pedestal 1, preloads support
Air accumulator 11 is connected with external inflation equipment, and the table top to stage body 2 keeps balance.
Action principle:
As shown in figure 4, A is the initial position (zero-bit, i.e. original state lower link bottom end flexural pivot center) of sliding rail actuator,
B is the target position at connecting rod top (with platform connecting pin) flexural pivot center, and C is connecting rod bottom end position when connecting rod top being made to reach B point
It sets.A point coordinate is fixed, and B point coordinate can be converted to by platform coordinate, and the distance between AC Ya is that track actuator needs to move
Displacement, L is length of connecting rod.
If being herein common actuator, only L ' need to be calculated according to the coordinate of A and B point, actuation then can be obtained
The displacement (L '-L) of device.Track actuator displacement Ya is calculated as follows when for track+connecting rod:
Complete the conversion of track+link mechanism Yu common actuator configurations.
Upper described, the only specific embodiment created of the utility model, but the protection scope that utility model is created is simultaneously
Not limited to this, anyone skilled in the art creates in the technical scope disclosed in utility model, can be easily
Expect change or replacement, should be covered within the scope of the utility model.Therefore, the protection model that the utility model is created
The protection scopes of appended claims should be subject to by enclosing.
Claims (10)
1. a kind of Novel vibration table, which is characterized in that including pedestal (1), stage body (2) and be mounted on more on the pedestal (1)
A linear electric machine component, the stage body (2) connect with multiple linear electric machine components respectively, wherein
The stage body (2), tests for placing test block, and to the performance of the test block；
It is circumferential that multiple linear electric machine components are mounted on the stage body (2), and is rotatablely connected with the stage body (2), makes described
Stage body (2) generates vibration；
The linear electric machine component is controlled by external remote control, controls multiple linear electric machine groups by external remote control
Part is started or stoped to realize and test the test block.
2. Novel vibration table according to claim 1, which is characterized in that the quantity of multiple linear electric machine components is 3
Group, to realize the performance test of test block different directions on three-dimensional space,
Or the quantity of multiple linear electric machine components is 2 groups, to realize test block different directions on two-dimensional space
Performance test.
3. Novel vibration table according to claim 1, which is characterized in that the linear electric machine component include guide rail (31),
The linear electric machine (32) and connecting rod (33) slided on the guide rail, in which:
The guide rail (31) is mounted on the pedestal (1) and stage body (2) described in neighbour；
Hingedly, the other end is connect with the linear electric machine (32) for described connecting rod (33) one end and the stage body (2), described linear
It drives the connecting rod (33) to move under the driving of motor (32), the stage body (2) is made to generate vibration.
4. Novel vibration table according to claim 3, which is characterized in that be equipped with the linear electricity on the guide rail (31)
The locating part (311) that machine (32) slides.
5. Novel vibration table according to claim 3, which is characterized in that further include being electrically connected with the linear electric machine (32)
Servo controller (100), the servo controller (100) controls the line to receive the signal of the external remote control
Property motor (32) starts or stops.
6. Novel vibration table according to claim 3, which is characterized in that the quantity of the linear electric machine (32) is 3, institute
The shape of guide rail (31) is stated as the setting of " T " font structure, or, the quantity of the linear electric machine (32) is 2, the guide rail
(31) shape is linear structure setting.
7. Novel vibration table according to claim 1, which is characterized in that further include be mounted on it is anti-on the pedestal (1)
Mechanical mass part (12) reduces loss of the vibration acceleration to the pedestal (1) caused by the stage body (2)；The multiple line
Property electric machine assembly is mounted on the counter-force mass member (12).
8. Novel vibration table according to claim 7, which is characterized in that further include being mounted on counter-force mass member (12)
Multiple preloading support air accumulators (11), the preloading support air accumulator (11) is connected with external inflation equipment, to described
The table top of body (2) keeps balance.
9. according to claim 1 to Novel vibration table described in 8 any one, which is characterized in that the linear electric machine is straight line
Type motor.
10. Novel vibration table according to claim 9, which is characterized in that external remote control is supervisory controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920187770.XU CN209296268U (en) | 2019-02-02 | 2019-02-02 | Novel vibration table |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920187770.XU CN209296268U (en) | 2019-02-02 | 2019-02-02 | Novel vibration table |
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| CN209296268U true CN209296268U (en) | 2019-08-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655222A (en) * | 2019-02-02 | 2019-04-19 | 北京思齐致新科技有限公司 | Novel vibration table |
| CN111693240A (en) * | 2020-05-27 | 2020-09-22 | 中国科学院西安光学精密机械研究所 | Torsional pendulum platform for realizing spatial same-frequency two-dimensional disturbance |
-
2019
- 2019-02-02 CN CN201920187770.XU patent/CN209296268U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655222A (en) * | 2019-02-02 | 2019-04-19 | 北京思齐致新科技有限公司 | Novel vibration table |
| CN109655222B (en) * | 2019-02-02 | 2024-04-12 | 北京思齐致新科技有限公司 | Novel vibrating table |
| CN111693240A (en) * | 2020-05-27 | 2020-09-22 | 中国科学院西安光学精密机械研究所 | Torsional pendulum platform for realizing spatial same-frequency two-dimensional disturbance |
| CN111693240B (en) * | 2020-05-27 | 2021-11-16 | 中国科学院西安光学精密机械研究所 | Torsional pendulum platform for realizing spatial same-frequency two-dimensional disturbance |
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