CN201867241U - Device for fast detecting natural frequency of motor rotor - Google Patents
Device for fast detecting natural frequency of motor rotor Download PDFInfo
- Publication number
- CN201867241U CN201867241U CN2010206439842U CN201020643984U CN201867241U CN 201867241 U CN201867241 U CN 201867241U CN 2010206439842 U CN2010206439842 U CN 2010206439842U CN 201020643984 U CN201020643984 U CN 201020643984U CN 201867241 U CN201867241 U CN 201867241U
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- rotor
- natural frequency
- sensor
- spectrum analyzer
- control loop
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- Expired - Fee Related
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model aims at providing a device for fast detecting the natural frequency of a motor rotor, which solves the problems of complicated computation, heavier time consumption, higher deviation of results, and the like of the traditional natural frequency computation of the rotor. The device comprises two support frames, sensors connected with the rotor to be detected, a spectrum analyzer and a data processing control loop. The technical features are as follows: the center of gravity of the rotor to be detected, which is arranged on the support frame in a centering manner, is fixed with one sensor; one end of a rotating shaft of the rotor to be detected is provided with a hammer point, and the other end of the rotating shaft, which corresponds to the hammer point, is fixed with the other sensor; and the two sensors are connected with the spectrum analyzer in the data processing control loop through data wires. Compared with the traditional computing method, the device has the advantages of simple structure, easy and convenient operation as well as fast and accurate measuring results.
Description
Technical field
The utility model relates to a kind of motor detection apparatus, and particularly a kind of rotor that structure is complicated links to each other with spectrum analyzer by sensor, realizes the rotor natural frequency device for fast detecting of measuring by the method for knocking.
Background technology
Need know the natural frequency of rotor during design of electrical motor, avoid resonance point.Motor rotor part mainly comprises different materials, parts in irregular shape such as rotating shaft, iron core, coil, because of the singularity of its structure, so make and to draw with traditional hand computation method calculating with finite element method that the result is very difficult accurately.Defectives such as all there are calculation of complex in traditional hand computation method and limited element analysis technique, and the time spent is longer, and result error is bigger.
The utility model content
The purpose of the utility model patent provides a kind of rotor natural frequency device for fast detecting, it has solved the calculation of complex of the existence of traditional calculations rotor intrinsic frequency, time spent is longer, problems such as result error is bigger, it is compared with traditional computing method, simple in structure, processing ease, convenience, measurement result is quick, accurate.
The technical scheme that the utility model adopted is: this rotor natural frequency device for fast detecting comprises two bracing frames, the sensor that is connected with measured rotor, spectrum analyzer and data processing and control loop, its technical essential is: the center of gravity place of the described measured rotor that centering is placed on support frame as described above is fixed with described sensor, rotating shaft one end at described measured rotor is provided with a hammer point, the other end and described hammer point corresponding section in described rotating shaft are fixed with described sensor, and two described sensors are connected in spectrum analyzer in the described data processing and control loop jointly by data line.
Described data processing and control loop comprises the information acquisition unit of being made up of two described sensors and described spectrum analyzer that connects by described data line, mainly by setting up computer data analysis and processing unit and the display unit that profile module, numerical value modular converter, data communication module, time-domain analysis module, spectrum analysis module, trend analysis module, printing reports module and condition judgment module are formed.
Advantage and the good effect that the utlity model has are: because data processing and control of the present utility model loop adopts two sensors and a spectrum analyzer to form information acquisition unit jointly, with simple hammering method, to what form by different materials, rotor measurement in irregular shape, rapidly vibration values is carried out data acquisition by sensor and spectrum analyzer, through computer data analysis and processing unit commonly used, the data of gathering are analyzed, after the processing, promptly can obtain the natural frequency of rotor, so it is compared with traditional computing method, simple in structure, processing ease, convenient, measurement result is quick, accurately.Problems such as it has solved the calculation of complex of the existence of traditional calculations rotor intrinsic frequency, and the time spent is longer, and result error is bigger.
Description of drawings
Below in conjunction with accompanying drawing the utility model patent is further described.
Fig. 1 is the concrete device for carrying out said synoptic diagram of the utility model patent.
Sequence number explanation among the figure: 1 bracing frame, 2 sensors, 3 data lines, 4 spectrum analyzers, 5 rotors, 6 hammer points.
Embodiment
Describe concrete structure of the present utility model in detail according to Fig. 1.This rotor natural frequency device for fast detecting comprises two bracing frames 1, the sensor 2, spectrum analyzer 4 and the data processing and control loop that are connected with measured rotor 5.Wherein bracing frame 1 specification and shape should be selected according to actual needs.On the centering position of two bracing frames 1, place the measured rotor 5 that constitutes by different materials, erose parts such as coil, rotating shaft, iron cores.Be fixed with sensor 2(present embodiment at the center of gravity place of rotor 5 and adopt the laser datum sensor), rotating shaft one end at rotor 5 is provided with a hammer point 6, the other end and hammer point 6 corresponding sections in the rotating shaft of rotor 5 are fixed with sensor 2, and these two sensors 2 are connected in spectrum analyzer 4 in the data processing and control loop jointly by data line 3.
The data processing and control loop adopts electronic component commonly used and common control circuit to form.It comprises the information acquisition unit of being made up of two sensors 2 and spectrum analyzer 4 that connects by data line 3, the main computer data analysis and processing unit of being made up of commercially available modules such as setting up profile module, numerical value modular converter, data communication module, time-domain analysis module, spectrum analysis module, trend analysis module, printing reports module and condition judgment module and the display unit of being made up of display screen.
The method of operating of measuring the natural frequency of rotor is: select the place in a confined space or friction source, measured rotor 5 centerings are placed on the bracing frame 1, promptly bracing frame 1 is supported on the axle journal place of the rotating shaft of rotor 5, and support size and bearing are with wide.A sensor 2 is placed into the center of gravity place of rotor 5, and another sensor 2 is placed on the end with the hammer point 6 corresponding rotating shafts of rotating shaft one end of rotor 5, and these two sensors 2 are linked to each other with spectrum analyzer 4 by data line 3.Open spectrum analyzer 4 and detect whether other vibration sources are arranged, if do not have then the axial coordinate that can set analysis is counted.After all were ready, the pound with a hammer hammer point 6 of rotating shaft of rotor 5 of the dynamics of use setting repeated to knock 3～4 times.The pulse signal that two sensors 2 send respectively is by data line input spectrum analyser 4, the data that collect are handled through the computer data analysis and processing unit in data processing and control loop, useless data are filtered, useful data and setting value are compared, provide natural frequency.Show testing result by display unit at last.
Claims (2)
1. rotor natural frequency device for fast detecting, comprise two bracing frames, the sensor that is connected with measured rotor, spectrum analyzer and data processing and control loop, it is characterized in that: the center of gravity place of the described measured rotor that the centering on support frame as described above is placed is fixed with described sensor, rotating shaft one end at described measured rotor is provided with a hammer point, the other end and described hammer point corresponding section in described rotating shaft are fixed with described sensor, and two described sensors are connected in spectrum analyzer in the described data processing and control loop jointly by data line.
2. rotor natural frequency device for fast detecting according to claim 1 is characterized in that: described data processing and control loop comprises the information acquisition unit of being made up of two described sensors and described spectrum analyzer that connects by described data line, mainly by setting up computer data analysis and processing unit and the display unit that profile module, numerical value modular converter, data communication module, time-domain analysis module, spectrum analysis module, trend analysis module, printing reports module and condition judgment module are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206439842U CN201867241U (en) | 2010-12-07 | 2010-12-07 | Device for fast detecting natural frequency of motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206439842U CN201867241U (en) | 2010-12-07 | 2010-12-07 | Device for fast detecting natural frequency of motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201867241U true CN201867241U (en) | 2011-06-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206439842U Expired - Fee Related CN201867241U (en) | 2010-12-07 | 2010-12-07 | Device for fast detecting natural frequency of motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201867241U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012259A (en) * | 2010-12-07 | 2011-04-13 | 沈阳远大机电装备有限公司 | Fast test device for natural frequency of motor rotor |
| CN104145407A (en) * | 2012-03-01 | 2014-11-12 | 西门子公司 | Method for operating an electrical machine |
-
2010
- 2010-12-07 CN CN2010206439842U patent/CN201867241U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012259A (en) * | 2010-12-07 | 2011-04-13 | 沈阳远大机电装备有限公司 | Fast test device for natural frequency of motor rotor |
| CN104145407A (en) * | 2012-03-01 | 2014-11-12 | 西门子公司 | Method for operating an electrical machine |
| CN104145407B (en) * | 2012-03-01 | 2016-08-24 | 西门子公司 | For the method running motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENYANG YUANDA TECHNOLOGY ELECTRICAL CO., LTD. Free format text: FORMER OWNER: SHENYANG YUANDA MECHANICAL + ELECTRICAL EQUIPMENT CO., LTD. Effective date: 20120615 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 110023 SHENYANG, LIAONING PROVINCE TO: 110027 SHENYANG, LIAONING PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120615 Address after: 110027 No. sixteen, 6 street, Shenyang economic and Technological Development Zone, Liaoning, China Patentee after: SHENYANG YUANDA TECHNOLOGY ELECTRIC WORKS CO., LTD. Address before: 110023 No. 22, thirteen street, economic and Technological Development Zone, Liaoning, Shenyang Patentee before: Shenyang Yuanda Machinery & Electronic Equipment Co., Ltd. |
|
| 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: 20110615 Termination date: 20191207 |