CN203337100U - Three dimensional displacement detection device of crystallizer vibration table - Google Patents
Three dimensional displacement detection device of crystallizer vibration table Download PDFInfo
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- CN203337100U CN203337100U CN2013203221967U CN201320322196U CN203337100U CN 203337100 U CN203337100 U CN 203337100U CN 2013203221967 U CN2013203221967 U CN 2013203221967U CN 201320322196 U CN201320322196 U CN 201320322196U CN 203337100 U CN203337100 U CN 203337100U
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- laser displacement
- detection device
- displacement
- movable body
- crystallizer vibration
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Abstract
The utility model discloses a three dimensional displacement detection device of a crystallizer vibration table. The device comprises a laser displacement detection device. The laser displacement detection device is installed on a fixing device and ensures that there is no displacement at any direction during a detection process. A motion body detection head is arranged in a measurement area of the laser displacement detection device. The motion body detection head is rigidly connected with a motion body fixing support through a crank. The motion body fixing support is installed on the detected crystallizer vibration table and moves along with the motion of the vibration table. The laser displacement detection device is provided with three laser displacement sensors. The three laser displacement sensors simultaneously detect displacement values of three directions of the motion body detection head. According to the utility model, the laser displacement sensors are used to detect three-dimensional displacement of the crystallizer vibration table of a continuous casting machine so that tiny displacement changes of each direction of the vibration table can be rapidly, truly, accurately and directly captured.
Description
Technical field
The utility model relates to a kind of vibration detection device, is specifically related to a kind of three-D displacement pick-up unit of crystallizer vibration platform.
Background technology
Mold oscillation is one of core technology of continuous casting steel machine, and crystallizer vibration platform work steadily can directly not affect the ejection quality, can cause the generation of bleed-out in serious situation.In recent years, along with special steel and high-quality steel are generated to the continuous increase needed, non-sinusoidal oscillation technology is widely adopted.Smoothness that how could the true determination and analysis crystallizer vibration platform in effective ground and the moving wave shape of crystallizer vibration platform, become the problem that the mechanical engineer of steel mill and technologist pay special attention to.
Mold oscillation is a very complicated process, and therefore the detection of vibration also becomes more difficult, and its reason is as follows:
1, the existing amplitude direction of mold oscillation (Z axis) by the drive systems shaking table regular motion up and down reciprocatingly, beat direction (X-axis) and the random irregular movement of imitative arc direction (Y-axis) are arranged again;
2, vibration signal is very complicated, except containing first-harmonic, also comprises the signals such as low frequency, high frequency and noise;
3, measuring accuracy is high, and measuring accuracy requires within 0.01mm;
4, sample frequency is high; Shaking table maximum vibration number of times is 5 times/second, only has signal frequency could truly reflect the vibrational waveform situation when 1KS/s is above; According to Shannon sampling law, sample frequency is that signal frequency can guarantee that sampled signal do not lose more than 2 times the time; Therefore, for the moving wave shape of true reflection shaking table, the sample frequency of each direction of vibration at least is greater than 2KS/s;
5, displacement amplitude is wide; Need to check the shift value of various different size equipment, displacement amplitude requires wide to 0.01～10mm, greatest measurement is minimum measured value 1000 times.
At present vibration detecting sensor more commonly used is acceleration transducer, and the acceleration signal that acceleration transducer can the direct-detection shaking table can be by the velocity amplitude and the shift value that calculate shaking table by integration and quadratic integral acceleration signal.The advantage of acceleration transducer measuring vibrations is that principle is simple, easy for installation, but in use, there will be following problem:
1, the integral error that zero point drift brings: there is fixing zero point drift in the output of acceleration transducer, and when acceleration is 0g, sensor output might not be 0, but a non-zero output A
error; The output valve of sensor is: a (t)+A
error, need to do quadratic integral to the output of acceleration transducer during the displacement calculating value, and to A
errorquadratic integral can produce the integration cumulative effect, therefore can affect final measuring accuracy;
2, the cumulative errors that the integration initial value brings: in the process of measuring, acceleration initial value a
0with speed initial value V
0differ and be decided to be 0 (in the actual measurement process substantially all from non-zero state), this can bring the cumulative errors of displacement measurement equally;
3, the error that HF noise signal is brought: in measuring process, the output signal of acceleration transducer easily is subject to the interference of HF noise signal;
4, the error that installation accuracy is brought: in measuring process, must guarantee that acceleration transducer is firm to be fixed on measured object and the direction of motion of the measurement direction of acceleration transducer and measured object keeps in full accord, otherwise can produce measuring error.
Based on above reason, when using acceleration transducer to detect the shaking table displacement, the processing of acceleration signal to sampling just becomes and is even more important, if can't effectively eliminate inherent error cited in above-mentioned analysis and interference in signal processing, finally just can't calculate truly, shift value accurately, this measuring error is difficult to carry out quantitative analysis simultaneously.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of three-D displacement pick-up unit of crystallizer vibration platform, and it can detect the vibration displacement of crystallizer vibration platform truly, accurately, reliably, rapidly.
For solving the problems of the technologies described above, the technical solution of the three-D displacement pick-up unit of the utility model crystallizer vibration platform is:
Comprise the laser displacement detection device, the laser displacement detection device is arranged on a stationary installation and guarantees in testing process the displacement without any direction; Be provided with the movable body detection head in the measured zone of laser displacement detection device, the movable body detection head is by the crank movable body fixed support that is rigidly connected; The movable body fixed support is arranged on tested crystallizer vibration platform and follows the motion of shaking table and move; Be provided with three laser displacement sensors on the laser displacement detection device, three laser displacement sensors detect the shift value of three directions of movable body detection head simultaneously.
Described movable body detection head and tested crystallizer vibration platform are synchronized with the movement and its movement locus is positioned at the measured zone of laser displacement detection device.
The technique effect that the utility model can reach is:
1, measuring accuracy is high: adopt the direct measuring vibrations platform of laser displacement sensor shift value, what sensor was exported is displacement signal, without calculating, can measure shift value, and the start position of measured value and shaking table is irrelevant simultaneously;
2, repeatable accuracy is high: the repeatable accuracy value is only 2 μ m;
3, fast response time: fastest response speed is 4Ks/S, can meet the demand of crystallizer vibration platform fully;
4, reliability is high: in measuring process, sensor and testee are contactless, therefore measure safety, reliable, the measurement mechanism long service life;
5, the movable body fixed support is firm is fixed on tested crystallizer vibration platform and follows the motion of shaking table and move, the movable body detection head is by be rigidly connected tested shaking table follow the motion campaign of shaking table of crank, and the movement locus of movable body detection head is positioned among the laser sensor detection device fully; Be rigidly connected and guarantee that in motion process, tested shaking table becomes as a whole with the movable body detection head between movable body detection head and tested shaking table, therefore all directions shift value of movable body detection head is shaking table all directions shift value, and measurement data is true, accurate;
6, the laser sensor detection device is arranged on stationary installation and guarantees in testing process the displacement without any direction; Three laser displacement sensors are integrated in the laser displacement detection device, install simple, be easy to carry, can detect the shift value of crystallizer vibration platform beat direction (X-axis), imitative arc direction (Y-axis) and amplitude direction (Z axis) by the movement locus that detects the movable body detection head simultaneously;
7, the movable body detection head is rectangular parallelepiped, and the tested surface of gauge head is machined surface; Therefore by detecting the shift value of movable body detection head, not only be equal to shaking table all directions shift value fully, simultaneously three sensors can integrated installation, makes portable checkout equipment, and the machined surface flatness of movable body detection head tested surface has also been guaranteed the authenticity of measurement data.
The accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the schematic diagram of the three-D displacement pick-up unit of the utility model crystallizer vibration platform.
Description of reference numerals in figure:
1 is the movable body fixed support, and 2 is crank,
3 is the movable body detection head, and 4 is the laser displacement detection device,
5 is laser displacement sensor, and 10 is tested crystallizer vibration platform.
Embodiment
As shown in Figure 1, the three-D displacement pick-up unit of the utility model crystallizer vibration platform, comprise laser displacement detection device 4, and laser displacement detection device 4 is arranged on a stationary installation and guarantees in testing process the displacement without any direction;
Be provided with movable body detection head 3 in the measured zone of laser displacement detection device 4, movable body detection head 3 is by the crank 2 movable body fixed support 1 that is rigidly connected; Movable body fixed support 1 is arranged on tested crystallizer vibration platform 10 and follows the motion of shaking table 10 and move;
Movable body fixed support 1 drives 3 inter-sync of the measured zone at laser displacement detection device 4 campaigns of movable body detection head by crank 2, and movable body detection head 3 and tested crystallizer vibration platform are synchronized with the movement and its movement locus is positioned at the measured zone of laser displacement detection device 4;
Be provided with 5, three laser displacement sensors 5 of three laser displacement sensors on laser displacement detection device 4 and detect X, the Y of movable body detection head 3, the shift value of tri-directions of Z simultaneously.
By laser displacement sensor, the three-D displacement to the crystallizer vibration platform of conticaster is detected the utility model, can fast, truly, accurately, directly capture the trickle change in displacement of shaking table all directions.
The utility model is measured accurately, and test function is abundant, and is easy to carry.
Claims (2)
1. the three-D displacement pick-up unit of a crystallizer vibration platform is characterized in that: comprise the laser displacement detection device, the laser displacement detection device is arranged on a stationary installation and guarantees in testing process the displacement without any direction;
Be provided with the movable body detection head in the measured zone of laser displacement detection device, the movable body detection head is by the crank movable body fixed support that is rigidly connected; The movable body fixed support is arranged on tested crystallizer vibration platform and follows the motion of shaking table and move;
Be provided with three laser displacement sensors on the laser displacement detection device, three laser displacement sensors detect the shift value of three directions of movable body detection head simultaneously.
2. the three-D displacement pick-up unit of crystallizer vibration platform according to claim 1 is characterized in that: described movable body detection head and tested crystallizer vibration platform are synchronized with the movement and its movement locus is positioned at the measured zone of laser displacement detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203221967U CN203337100U (en) | 2013-06-05 | 2013-06-05 | Three dimensional displacement detection device of crystallizer vibration table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203221967U CN203337100U (en) | 2013-06-05 | 2013-06-05 | Three dimensional displacement detection device of crystallizer vibration table |
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| Publication Number | Publication Date |
|---|---|
| CN203337100U true CN203337100U (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203221967U Expired - Lifetime CN203337100U (en) | 2013-06-05 | 2013-06-05 | Three dimensional displacement detection device of crystallizer vibration table |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104589158A (en) * | 2015-01-28 | 2015-05-06 | 莱芜钢铁集团有限公司 | Sliding seat type sawing machine and deflection measurement device thereof |
| CN105547216A (en) * | 2015-12-10 | 2016-05-04 | 中国航空工业集团公司北京长城计量测试技术研究所 | Wireless device for measuring vibration displacement of centrifugation-vibration composite apparatus |
| CN111982266A (en) * | 2020-06-24 | 2020-11-24 | 北京航空航天大学 | Laser measurement method for vibration displacement of filament and gun tip of scanning electron microscope electron gun |
-
2013
- 2013-06-05 CN CN2013203221967U patent/CN203337100U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104589158A (en) * | 2015-01-28 | 2015-05-06 | 莱芜钢铁集团有限公司 | Sliding seat type sawing machine and deflection measurement device thereof |
| CN104589158B (en) * | 2015-01-28 | 2017-02-22 | 莱芜钢铁集团有限公司 | Sliding seat type sawing machine and deflection measurement device thereof |
| CN105547216A (en) * | 2015-12-10 | 2016-05-04 | 中国航空工业集团公司北京长城计量测试技术研究所 | Wireless device for measuring vibration displacement of centrifugation-vibration composite apparatus |
| CN105547216B (en) * | 2015-12-10 | 2018-07-24 | 中国航空工业集团公司北京长城计量测试技术研究所 | It is a kind of for centrifuge-vibrating composite apparatus in vibration displacement measure wireless device |
| CN111982266A (en) * | 2020-06-24 | 2020-11-24 | 北京航空航天大学 | Laser measurement method for vibration displacement of filament and gun tip of scanning electron microscope electron gun |
| CN111982266B (en) * | 2020-06-24 | 2022-06-28 | 北京航空航天大学 | Laser measurement method for vibration displacement of filament and gun tip of scanning electron microscope electron gun |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |