CN2039019U - Balancer with piezoelectric ceramics sensor and charge amplifier - Google Patents
Balancer with piezoelectric ceramics sensor and charge amplifier Download PDFInfo
- Publication number
- CN2039019U CN2039019U CN 88220491 CN88220491U CN2039019U CN 2039019 U CN2039019 U CN 2039019U CN 88220491 CN88220491 CN 88220491 CN 88220491 U CN88220491 U CN 88220491U CN 2039019 U CN2039019 U CN 2039019U
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- CN
- China
- Prior art keywords
- piezoelectric ceramics
- charge amplifier
- force transducer
- utility
- model
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The hard bearing balancing machine of a piezoelectric ceramics force sensor can make the unbalance value of a rotor been detected by the piezoelectric ceramics force sensor arranged on a supporting frame, amplified and transformed by a charge amplifier and operated and displayed by an electrical measurement box. The utility model has the advantages of visual and precise measurement and high sensitivity. The utility model has the advantages of simple structure, high reliability.
Description
The utility model relates generally to balancing machine, particularly hard bearing balan.
Present existing hard bearing balan is the end of the sixties, the beginning of the seventies, development formed, its ultimate principle is the uneven centrifugal force when measuring the measured rotor rotation, reach the purpose of " permanent calibration " through the A.B.C network operations, it has abandoned the soft bearing balancing machine compensation, separate, cumbersome operations such as calibration have realized one push start measurement amount of unbalance.And pick-up sensor in the hard bearing balan measuring system of China's production at present; All be to adopt magnetoelectric velocity transducer and mechanical enlarger, so that the centrifugal masterpiece of imbalance is measured indirectly, thereby introduced the inadequate natural endowment that exists in the design, this is because the bearing support rigidity of hard bearing balan is higher, magnetoelectric velocity transducer sensitivity deficiency is amplified if adopt mechanical enlarger that the unbalance vibration signal is made machinery, then makes very abominable signal to noise ratio (S/N ratio) more abominable, frequency range is narrow, influences measuring accuracy.Simultaneously, amplitude-frequency, phase-frequency characteristic tracking difficulty is big, and sensor reliability is relatively poor, the processing cost height.
Therefore, it is a kind of highly sensitive that the purpose of this utility model is to provide, dynamo-electric conversion ratio height, the hard bearing balan that measuring accuracy is high.
The purpose of this utility model is by being equipped with charge amplifier with the piezoelectric ceramics force transducer, the amount of unbalance of the measured rotor that the hard bearing balan bearing support is experienced detects, and converts the charge signal that detection obtains to voltage signal and deliver to the electrical measurement case and carry out computing and show.
Advantage of the present utility model is to have improved common hard supporting balance, no matter can realize the high-acruracy survey of " permanent calibration " on the size balance machine, value is stable, and balancing speed is low, and is simple to operate, safety, low cost of manufacture, reliability height.
Below in conjunction with accompanying drawing, formation of the present utility model is elaborated.
Fig. 1 is the section of structure of voltage ceramic force transducer described in the utility model;
Fig. 2 is that expression piezoelectric ceramics force transducer is provided with the position on the equilibrator frame;
Fig. 3 is the schematic circuit of charge amplifier.
Referring to accompanying drawing 1, Fig. 1 is a piezoelectric ceramics force transducer section of structure described in the utility model, in the figure, the piezoelectric ceramics blade unit that label 1 one or more pieces piezoelectric ceramics of expression are in parallel and are formed, label 2 expression insulation spacers, it is close to the both sides of above-mentioned piezoelectric ceramic piece 1, match with steel plate washer 3 and steel ball 6 between described insulation spacer 2 and the base 10, match with adjustment screw 5 and steel ball 4 at described insulation spacer 2 and the supporting end 12, piezoelectric ceramic piece 1 and insulation spacer 2 are arranged in the shell 7, can make and include piezoelectric ceramic piece 1 and insulation spacer 2 is fixed between base 10 and the supporting base 12 at interior shell 7 by regulate adjusting screw 5, and adjust screw and can also regulate the compaction forces of giving that is added on the piezoelectric ceramic piece 1 by regulating.The positive pole and the negative pole of described piezoelectric ceramics blade unit 1 are drawn by lead respectively, send the electrical measurement case after the conversion of power supply lotus amplifier.Adjust between screw and the supporting base 12 and cooperate with steel ball 4.
Referring to accompanying drawing 2, Fig. 2 represents that the pressure ceramic force transducer is provided with the position on the equilibrator frame.Label 14 expression workpiece are rotor in the figure, the support of label 24 expression holding workpieces 14, support 24 bottoms are provided with rigid support 34, be provided with piezoceramic transducer 54 among the rigid support 34 between base and the supporting base, the positive and negative extension line 64 of described piezoceramic transducer can lead to electrical measurement case charge amplifier.
When described workpiece 14 is arranged on the work support 24 and turns round, because workpiece is that rotor exists amount of unbalance, the uneven centrifugal force that this amount of unbalance produces in rotation process is acting on the piezoceramic transducer 54 by rigid support 34, make electric charge that piezoelectric ceramic piece produces with the proportional relation of uneven centrifugal force, the quantity of electric charge that piezoceramic transducer 54 produces should become voltage signal to change in the charge amplifier of delivering to the electrical measurement case by lead 64.
Referring to accompanying drawing 3, Fig. 3 is the schematic diagram of charge amplifier in the utility model, Q represents the quantity of electric charge that piezoelectric ceramic piece produces in the figure, it is by operational amplifier A integrating circuit R, C output voltage signal U, this voltage signal U and quantity of electric charge Q are proportional, and this voltage signal is sent to and further carries out computing and demonstration in the electrical measurement case.
Claims (2)
1, a kind of hard bearing balan with piezoelectric ceramics force transducer and charge amplifier, comprise the electrical measurement case, bearing support, frame, it is characterized in that being provided with in bearing support the piezoelectric ceramics force transducer that the uneven centrifugal force that acts on can be rotor rotation the time on the bearing support converts the quantity of electric charge to, the output charge amount signal of described piezoelectric ceramics force transducer is linked charge amplifier by lead.
2, hard bearing balan as claimed in claim 1 is characterized in that comprising one or more pieces piezoelectric ceramic pieces in the described piezoelectric ceramics force transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88220491 CN2039019U (en) | 1988-11-26 | 1988-11-26 | Balancer with piezoelectric ceramics sensor and charge amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88220491 CN2039019U (en) | 1988-11-26 | 1988-11-26 | Balancer with piezoelectric ceramics sensor and charge amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2039019U true CN2039019U (en) | 1989-06-07 |
Family
ID=4852710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88220491 Expired - Lifetime CN2039019U (en) | 1988-11-26 | 1988-11-26 | Balancer with piezoelectric ceramics sensor and charge amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2039019U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915994A (en) * | 2013-01-07 | 2014-07-09 | 永济新时速电机电器有限责任公司 | Overvoltage protection device and locomotive auxiliary converter |
| CN109876931A (en) * | 2019-04-08 | 2019-06-14 | 浙江大学 | A kind of hypergravity centrifuge amount of unbalance monitoring method |
-
1988
- 1988-11-26 CN CN 88220491 patent/CN2039019U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915994A (en) * | 2013-01-07 | 2014-07-09 | 永济新时速电机电器有限责任公司 | Overvoltage protection device and locomotive auxiliary converter |
| CN109876931A (en) * | 2019-04-08 | 2019-06-14 | 浙江大学 | A kind of hypergravity centrifuge amount of unbalance monitoring method |
| CN109876931B (en) * | 2019-04-08 | 2020-07-03 | 浙江大学 | Method for monitoring unbalance of supergravity centrifugal machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |