CN207318033U - Gas suspension vibration measuring platform - Google Patents
Gas suspension vibration measuring platform Download PDFInfo
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- CN207318033U CN207318033U CN201721077521.2U CN201721077521U CN207318033U CN 207318033 U CN207318033 U CN 207318033U CN 201721077521 U CN201721077521 U CN 201721077521U CN 207318033 U CN207318033 U CN 207318033U
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- air
- guide rail
- signal
- vibration measuring
- float guide
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Abstract
Current sensor field is the utility model is related to, specifically a kind of gas suspension vibration measuring platform.The utility model includes：Air supply system, including air compressor machine and the three-level air filter of its rear end, the gas of the three-level air filter filtering are output to the air-float guide rail in vibration measuring system, air-float guide rail drive link is suspended in the air；Vibration measuring system, includes the exciting source and air-float guide rail of interconnection, and standard signal is converted into reciprocal periodic motion so as to promote the air-float guide rail by the exciting source；Control system, including signal generator, universal meter, acceleration transducer, signal processor, tested sensor and signal picker.The air-float guide rail of the utility model leaves ground just as magnetic suspension train, and frictional force is zero during its work, and energy consumption is little.Hz-KHz is also widened significantly, does not just have to switch shake table by with regard to the measurement of basic, normal, high frequency.
Description
Technical field
Current sensor field is the utility model is related to, specifically a kind of gas suspension vibration measuring platform.
Background technology
Chinese national economy is just being advanced by leaps and bounds development at present, and capital construction also attends by that the Belt and Road is in full flourish to move towards five
The continent four seas.Highway, railway, bridge, harbour, airport, power station ... emerging in large numbers like the mushrooms after rain.Everything is all be unable to do without to applying
Vibration environment monitoring during work.
Instantly the vibration measurement standard detection in China also falls behind relatively compared with developed country, and reason is as follows：
1. frequency band is too narrow, must not stop to switch shake table：With current domestic top metrological service --- Chinese measuring technology
It is with three kinds of shaking platforms, i.e., low if testing a kind of vibration velocity sensor of vibration frequency response for 1HZ-1KHZ exemplified by research institute
Frequency platform (1-20HZ), intermediate frequency platform (10~200HZ), high frequency platform (100~1KHZ), and three kinds of vibration measuring platforms also not in same place,
Test is got up, and also to switch shake table back and forth pretty troublesome.
2. shake table operation principle falls behind：The reciprocating motion of these shake tables is to lean on hydraulic-driven and hard friction.Hydraulic pressure is rung
Should be slow, frequency does not increase yet；Hard friction resistance is big, causes that shake table thrust is inadequate, and amplitude does not increase.
Domestic and international all level (direction) shake tables before this use hydraulic-driven, hard friction.Wherein exhausted big portion
It is single-point cantilevered to divide small-sized horizontal vibration platform, this just necessarily leads to two big defects：1) frequency response is slow, and vibration frequency band is narrow；
2) vertical disturbance torque is produced by centrifugal force.
Utility model content
For above-mentioned shortcoming existing in the prior art, the technical problem to be solved by the present invention is to provide gas to hang
Floating vibration measuring platform.
Used technical solution is the utility model to achieve the above object：A kind of gas suspension vibration measuring platform, including：
Air supply system, including air compressor machine and the three-level air filter of its rear end, the three-level air filter filtering
Gas is output to the air-float guide rail in vibration measuring system, air-float guide rail drive link is suspended in the air；
Vibration measuring system, includes the exciting source and air-float guide rail of interconnection, and standard signal is converted into past by the exciting source
Multiple periodic motion is so as to promote the air-float guide rail；
Control system, including signal generator, universal meter, acceleration transducer, signal processor, tested sensor and letter
Number collector；The signal generator connects the exciting source；The acceleration transducer is arranged on the air-float guide rail, even
Connect the signal processor；Universal meter connects the signal processor；The signal processor connects the signal picker；Institute
State signal picker and be also connected with tested sensor；The tested sensor is arranged on the air-float guide rail, for swashing described
The mechanical oscillation signal that vibration source produces is transformed into voltage signal.
The air compressor machine is the air compressor machine of pressure adjustable.
The P levels of the three-level air filter use T-001, and Q grades use 015Q, and S grades use A-001.
Connected inside the air supply system by anti-aerating pipe.
The air-float guide rail includes firm banking, fixed frame, air supporting lever and erection joint, the firm banking upper surface
Opposite both ends connect a fixed frame respectively, and the air supporting lever, the air supporting lever are passed through in the middle part of described two fixed frames
One end connect the erection joint, the erection joint is used to connect the exciting source；The firm banking, which is internally provided with, leads
Air drain, the air slot are used to connect the three-level air filter；The fixed frame is internally provided with gas port, the gas port
Connected with the air slot, and the venthole of the gas port is located at the inner surface of the fixed frame.
The exciting source includes magnet exciting coil, moving winding and mandril, the magnet exciting coil by external input direct current, from
And constant magnetic field is produced, it is AC coil in electromagnetic force it acts as constant magnetic force effect is provided inside vibrator
It is lower to produce vibration；The moving winding is swashed by external input different frequency and the alternating current of amplitude so as to produce different electromagnetism
Power is encouraged, drives the mandril to export different vibrations.
The signal generator is sinusoidal signal generator, connects the moving winding of the exciting source.
The utility model has the following advantages and beneficial effect：
1. the air-float guide rail of the utility model leaves ground just as magnetic suspension train, frictional force is zero during its work,
And energy consumption is little.Hz-KHz is also widened significantly, does not just have to switch shake table by with regard to the measurement of basic, normal, high frequency.
2. test frequency range is widened significantly：Since the platform of horizontal reciprocating movement is that the air pad produced by air pump suspends
In the air, the frictional force that its movement produces is almost nil or negligible.So the frequency response moved back and forth is exceedingly fast and merrily and lightheartedly.Frequently
Band is up to 1-1kHZ.This is that the current domestic top-level shake table for including China Testing Technology Institute can not all be accomplished.
3. vibration measuring platform thrust greatly increases：Due to taking both shoulders supporting way, compared with one-armed singly outstanding both at home and abroad at present
Platform is moved back and forth, the load-bearing capacity under its square one increases by more than 10 times.
4. highly stable, standard horizontal vibration signal can be exported：Due to the processing technology using superhigh precision, its both shoulders
Stationarity of reciprocating vibration, uniformity and the reliability of support are hanged horizontal vibration platform compared with current most of one-armed list and to be got well
It is very much.
5. structure is simplified, cost substantially reduces：Because eliminating hydraulic system, optimize design and craft, its cost with
Price is 1/4 to the 1/5 of same kind of products at abroad.If the labour cost that not zapping is saved is counted in, more considerable.
Brief description of the drawings
Fig. 1 is the overall structure figure of the utility model；
Fig. 2 is the structure chart of the air-float guide rail of the utility model；
Fig. 3 is the internal structure schematic diagram of the exciting source of the utility model.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
As shown in Figure 1, gas suspension vibration measuring platform described in the utility model includes air supply system, vibration measuring system and control system
System.Wherein, air supply system includes air compressor machine and the three-level air filter of its rear end, the gas of the three-level air filter filtering
Body is output to the air-float guide rail in vibration measuring system, air-float guide rail drive link is suspended in the air.The air compressor machine is pressure adjustable
Air compressor machine, select David ZWB-0.071/7 in the present embodiment.The P levels of three-level air filter use T-001, Q grades of uses
015Q, S grades use A-001.The inside of air supply system is connected by anti-aerating pipe.Vibration measuring system includes the exciting source being connected with each other
And standard signal is converted into reciprocal periodic motion so as to promote the air-float guide rail of rear end by air-float guide rail, the exciting source.Control
System processed includes signal generator, universal meter, acceleration transducer, signal processor, tested sensor and signal picker；Institute
State signal generator and connect the exciting source；The acceleration transducer is arranged on the air-float guide rail, connects the signal
Processor；Universal meter connects the signal processor；The signal processor connects the signal picker；The signal acquisition
Device is also connected with tested sensor；The tested sensor is arranged on the air-float guide rail, for produce the exciting source
Mechanical oscillation signal is transformed into voltage signal.
The utility model is engaged using outsourcing is supporting with voluntarily developing, such as general sinusoidal signal generator, high accuracy
Digital voltmeter, digital air compressor machine etc. uses outsourcing.And crucial gas suspension platform and exciting source is processed by oneself design.Mesh
It is preceding successfully to develop First model machine, through with China Testing Technology Institute's National primary standard platform to this test after reached phase
Same international standard.
As shown in Fig. 2, being gas passage, i.e. air slot first by the indoor design of firm banking 1, then air-flow is drawn again
Enter the inside circumference of fixed frame 2 (including gas port), since the inside circumference of fixed frame 2 is designed with many small ventholes,
So that produce sufficiently large air-flow.We introduce gas port using pressure-air and air supporting lever 3 suspend.Since air supporting is moved
Gases at high pressure are all given in four faces of bar 3, so four faces do not contact substantially with the fixed frame 2 and firm banking 1 of surrounding, this
Sample can greatly reduce the energy loss brought due to friction so that follow-up vertical swing is reduced.
As shown in figure 3, supply two kinds of electric currents of alternating current and direct current at the same time outside whole excitation system.Electrodynamic type exciting source
Magnet exciting coil 5 is inputted by external dc electricity, so as to join raw constant magnetic field；And alternating current is inputted into moving winding 6, due to being defeated
The alternating current entered, so electromagnetic excitation power can be produced, in view of giving the alternating current of different frequency and amplitude outside us, produces not
Same electromagnetic excitation power, drives internal mandril 7 to export different vibrations, the low side connection support spring 8 of mandril 7.Utilize this
Principle we can produce we needs mechanical oscillation.
Control system includes signal generator, universal meter, acceleration transducer, signal processor, tested sensor and letter
Number collector.
Here we employ high-accuracy sinusoidal signal generator (the present embodiment selects AGILENT 32310A), pass through company
The moving winding 6 for connecing exciting source is supplied to exciting source it is produced given mechanical oscillation with specific AC signal.Then again will
Mechanical oscillation are gathered back in control system by high-precision standard acceler (the present embodiment selects Lanace LC0155)
Signal processor.The present embodiment universal meter selects FLUCK 8845A.So the band feedback of one closed loop of system formation is
System, so that lifting system stability, also so that whole system is supplied to, the signal of vibration measuring system is pure, low noise.Finally will processing
The input signal collectors such as rear standard signal, mechanical signal (the present embodiment selects TC-4850).At the same time.Finally processing is believed
Number being transferred to host computer is further handled.
The structure of signal processor is put into the acceleration transducer (model of a standard for us on exciting source：
LC0155), sensor output is signally attached on Signal-regulated kinase, then by the signal of Signal-regulated kinase output at the same time
Access in universal meter and back end signal collector.Then computer processing, display are inputted again.
The inside of Signal-regulated kinase turns for the acceleration signal of input into internal hardware integrating circuit, builtin voltage is crossed
Change, the part such as internal signal noise processed.It is speed signal by acceleration signal conditioning, signal acquisition is supplied as standard signal
Device.
The exciting source of the utility model by repeatedly debugging and designing repeatedly so that whole system reaches state in low frequency response
Family's standard, perfectly realizes low frequency horizontal vibration.
The utility model is provided the signal of standard by external signal generator, inputs to exciting source, former by electromagnetic induction
Reason.Standard signal is converted into reciprocal periodic motion, so as to promote the air-float guide rail of rear end.And air-float guide rail is then to pass through height
Pressure gas stream blows afloat whole drive link to come, and suspends in the air.Moved followed by the reciprocating motion of exciting source.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the present invention, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on, should be included within the scope of protection of this utility model.
Claims (7)
1. gas suspension vibration measuring platform, it is characterised in that including：
Air supply system, including air compressor machine and the three-level air filter of its rear end, the gas of the three-level air filter filtering
The air-float guide rail being output in vibration measuring system, makes air-float guide rail drive link suspend in the air；
Vibration measuring system, includes the exciting source and air-float guide rail of interconnection, and standard signal is converted into reciprocal by the exciting source
Periodic motion is so as to promote the air-float guide rail；
Control system, including signal generator, universal meter, acceleration transducer, signal processor, tested sensor and signal are adopted
Storage；The signal generator connects the exciting source；The acceleration transducer is arranged on the air-float guide rail, connects institute
State signal processor；Universal meter connects the signal processor；The signal processor connects the signal picker；The letter
Number collector is also connected with tested sensor；The tested sensor is arranged on the air-float guide rail, for by the exciting source
The mechanical oscillation signal of generation is transformed into voltage signal.
2. gas suspension vibration measuring platform according to claim 1, it is characterised in that the air compressor machine is the pneumatics of pressure adjustable
Machine.
3. gas suspension vibration measuring platform according to claim 1, it is characterised in that the P levels of the three-level air filter are adopted
With T-001, Q grades use 015Q, and S grades use A-001.
4. gas suspension vibration measuring platform according to claim 1, it is characterised in that pass through anti-gas explosion inside the air supply system
Pipe connects.
5. gas suspension vibration measuring platform according to claim 1, it is characterised in that the air-float guide rail include firm banking,
Fixed frame, air supporting lever and erection joint, the opposite both ends in the firm banking upper surface connect a fixed frame respectively, described
The air supporting lever is passed through in the middle part of two fixed frames, one end of the air supporting lever connects the erection joint, and the installation connects
Head is used to connect the exciting source；The firm banking is internally provided with air slot, and the air slot is used to connect the three-level sky
Air filter；The fixed frame is internally provided with gas port, the gas port is connected with the air slot, and the gas port goes out
Stomata is located at the inner surface of the fixed frame.
6. gas suspension vibration measuring platform according to claim 1, it is characterised in that the exciting source includes magnet exciting coil, moves
Coil and mandril, the magnet exciting coil is by external input direct current, so as to produce constant magnetic field, it acts as in vibrator
Portion provides constant magnetic force effect, and vibration is produced under electromagnetic force for AC coil；The moving winding passes through external input
The alternating current of different frequency and amplitude, so as to produce different electromagnetic excitation powers, drives the mandril to export different vibrations.
7. gas suspension vibration measuring platform according to claim 1, it is characterised in that the signal generator is sent out for sinusoidal signal
Raw device, connects the moving winding of the exciting source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721077521.2U CN207318033U (en) | 2017-08-26 | 2017-08-26 | Gas suspension vibration measuring platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721077521.2U CN207318033U (en) | 2017-08-26 | 2017-08-26 | Gas suspension vibration measuring platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207318033U true CN207318033U (en) | 2018-05-04 |
Family
ID=62432254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721077521.2U Expired - Fee Related CN207318033U (en) | 2017-08-26 | 2017-08-26 | Gas suspension vibration measuring platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207318033U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629564A (en) * | 2021-01-06 | 2021-04-09 | 哈尔滨工业大学 | High-acceleration high-precision linear vibration table |
-
2017
- 2017-08-26 CN CN201721077521.2U patent/CN207318033U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629564A (en) * | 2021-01-06 | 2021-04-09 | 哈尔滨工业大学 | High-acceleration high-precision linear vibration table |
| CN112629564B (en) * | 2021-01-06 | 2023-02-28 | 哈尔滨工业大学 | High-acceleration high-precision linear vibration table |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180504 Termination date: 20180826 |