CN103105150A - High-accuracy diaphragm-type micrometric displacement calibration device of extensometer - Google Patents
High-accuracy diaphragm-type micrometric displacement calibration device of extensometer Download PDFInfo
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- CN103105150A CN103105150A CN2013100350867A CN201310035086A CN103105150A CN 103105150 A CN103105150 A CN 103105150A CN 2013100350867 A CN2013100350867 A CN 2013100350867A CN 201310035086 A CN201310035086 A CN 201310035086A CN 103105150 A CN103105150 A CN 103105150A
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- extensometer
- calibration device
- diaphragm
- micrometric displacement
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Abstract
The invention discloses a high-accuracy diaphragm-type micrometric displacement calibration device of an extensometer, and relates to the micrometric displacement calibration device. The calibration device comprises a movable object (0), an elastic diaphragm (1), a diaphragm seat (2), a horizontal drawbench (3), a guard board (4), a rotating wheel (5), a stepping motor (6), an upper cover plate (7.1), a lower cover plate (7.2), a driving gear (8), a screw (9), a driven gear (10), a hang spring (11), a heavy punch (12), a stand bar (13), a baseboard (14) and a rotating wheel seat (15). The high-accuracy diaphragm-type micrometric displacement calibration device of the extensometer solves the problem that an environmental factor influences a calibrated error. The displacement constant is constant. The stepping motor is adopted to control the heavy punch to rise and fall, and high-accuracy diaphragm-type micrometric displacement calibration device of the extensometer is perfectly combined with the used extensometer main machine. The high-accuracy diaphragm-type micrometric displacement calibration device of the extensometer is compatible with a used data collector. The high-accuracy diaphragm-type micrometric displacement calibration device of the extensometer is easier and miniaturized in structure, low in machining precision requirement, convenient to transport and install, and suitable for calibration of the extensometer.
Description
Technical field
The present invention relates to a kind of micrometric displacement caliberating device, relate in particular to a kind of pantograph high precision membranes displacement calibrating device that declines.
Background technology
Pantograph is the instrument that precision measurement earth's crust rock mass point-to-point transmission horizontal range changes relatively, be applicable to observe the continuous variation of crustal strain and solid tide horizontal component, for the Changing Pattern of the horizontal strain of Study of Seismic preparation process provides data, also provide significant data for earth elasticity research.
Short pantograph (the Zl200610018250.3 of differential type; CN100483151C) caliberating device has been widely used in hundreds of the earthquake observating stations in the whole nation, its precise structure, but requirement on machining accuracy is high, complex manufacturing technology.The inside of caliberating device is comprised of dovetail groove and extension spring, utilizes the tapered wedges of 50:1 that length travel is converted to transversal displacement.Need to fill it up with oil in caliberating device in long-time use procedure, guarantee the slip smoothness of dovetail groove.Use the singularity of twice owing to being only in earthquake observating station caliberating device requirement one, according to the feedback opinion of a plurality of stations, after caliberating device was installed and used 2 years, following problem easily appearred in caliberating device usually:
1, the time grown after due to oil solidify, advance the ash etc. reason make dovetail groove stuck;
2, the tapered wedges requirement on machining accuracy of 50:1 is high, and the uncertainty in mechanical processing process makes the caliberating device displacement constant of each differ greatly;
3, be subjected to the impact of cavern environmental factor, repeatable accuracy variation after the long-time placement of caliberating device, displacement constant changes.
Summary of the invention
Purpose of the present invention just is to overcome the shortcoming and defect that prior art exists, and the more simple and reliable pantograph high precision membranes of a kind of structure displacement calibrating device that declines is provided.
The object of the present invention is achieved like this:
The present invention utilizes constant masterpiece to be used for elastic body, and elastic body each deflection in elastic range is identical, and consequent micrometric displacement amount is identical.The present invention adopts certain thickness diaphragm as elastic body, utilize making a concerted effort as the constant force that acts on elastic body of weight and backplate gravity, utilize the step motor control weight to rise and fall to guarantee that elastic body is in only is subjected to constant force and two duties that do not stress in elastic range.
Specifically, this device comprises mobile object, flexible sheet, diaphragm seat, horizontal wire drawing, backplate, runner, stepper motor, upper cover plate, lower cover, driving gear, screw rod, follower gear, hang spring, weight, vertical rod, base plate and rotaring wheeling base;
Its position and annexation are:
On base plate, from left to right, be respectively arranged with diaphragm seat, rotaring wheeling base and vertical rod;
Be provided with flexible sheet on the diaphragm seat;
Be provided with a stationary shaft on rotaring wheeling base, the center pit of runner is enclosed within on stationary shaft;
Upper cover plate and lower cover connect into a support with vertical rod respectively, be provided with stepper motor on upper cover plate, on lower cover, from left to right, be respectively arranged with intermeshing driving gear and follower gear, the rotating shaft of stepper motor is connected central shaft and is connected with driving gear, the center internal thread of follower gear and the external thread of screw rod are intermeshing, and the lower end of screw rod is connected with weight by hang spring;
Mobile object, flexible sheet, horizontal wire drawing are connected with runner and are connected; Runner, backplate and weight are rigidly connected successively, consist of a pendulum architecture.
The present invention has following advantages and good effect:
1, solved the impact of environmental factor on calibrated error;
2, displacement constant is constant;
3, adopt the step motor control weight to rise and fall, with the pantograph main frame perfect adaptation that the station is being used, adopt 12V direct current supply, transmit, use safer;
4, the data acquisition unit that is using with the station is compatible, need not make hardware and change, and again writes number and adopts internal program and can directly apply to the station;
5, the more simple and miniaturization of structure, requirement on machining accuracy is low, convenient transportation and installing;
Be applicable to the demarcation of pantograph.
Description of drawings
Fig. 1 is structural representation of the present invention.
In figure: wherein:
0-mobile object, 1-flexible sheet, 2-diaphragm seat, 3-horizontal wire drawing,
4-backplate, 5-runner, 6-stepper motor, 7.1,7.2-upper and lower cover plate,
8-driving gear, 9-screw rod, 10-follower gear, 11-hang spring,
12-weight, 13-vertical rod, 14-base plate, 15-rotaring wheeling base.
Fig. 2 is SSY-pantograph scale value calibration scale.
Embodiment
Describe in detail below in conjunction with drawings and Examples:
One, the structure of this caliberating device
1, overall
As Fig. 1, this device comprises mobile object 0, flexible sheet 1, diaphragm seat 2, horizontal wire drawing 3, backplate 4, runner 5, stepper motor 6, upper cover plate 7.1, lower cover 7.2, driving gear 8, screw rod 9, follower gear 10, hang spring 11, weight 12, vertical rod 13, base plate 14 and rotaring wheeling base 15;
Its position and annexation are:
On base plate 14, from left to right, be respectively arranged with diaphragm seat 2, rotaring wheeling base 15 and vertical rod 13;
Be provided with flexible sheet 1 on diaphragm seat 2;
Be provided with a stationary shaft on rotaring wheeling base 15, the center pit of runner 5 is enclosed within on stationary shaft;
Upper cover plate 7.1 and lower cover 7.2 connect into a support with vertical rod 13 respectively, be provided with stepper motor 6 on upper cover plate 7.1, on lower cover 7.2, from left to right, be respectively arranged with intermeshing driving gear 8 and follower gear 10, central shaft that the rotating shaft of stepper motor 6 is connected with driving gear connects, and the center internal thread of follower gear 10 and the external thread of screw rod 9 are intermeshing, and connection is connected by hang spring 11 in the lower end of screw rod 9 with weight;
Its principle of work is:
Stepper motor 6 drives screw rod 9 by driving gear 8 and follower gear 10 and does movement in vertical direction, and screw rod 9 is connected with weight 12 by hang spring 11, makes weight 12 be in high-order and low level two states by the setting that stepper motor 6 is rotated the number of turns; Weight 12 coordinates with runner 5 by backplate 4 and makes 3 of horizontal wire drawings be in the horizontal direction stressed or the state that do not stress, and makes mobile object 0 produce micrometric displacement thereby pull flexible sheet 1 to produce Flexible change.
1. flexible sheet 1 is in indeformable state
By the control of stepper motor 6, make weight 12 be in a high position, this moment, hang spring 11 was in tension,
Horizontal wire drawing 3 is in the state of not stressing, and flexible sheet 1 is in indeformable state, makes mobile object 0 not produce displacement.
2. flexible sheet is in deformation state
By the control of stepper motor 6, make weight 12 be in low level, this moment, hang spring 11 was in the state of not stressing, horizontal wire drawing 3 is in tension, flexible sheet 1 only is subjected to the gravity of weight 12 and backplate 4 make a concerted effort (this power is invariable), is in elastic deformation, makes mobile object 0 produce micrometric displacement.
3. invariable with joint efforts due to the gravity of weight 12 and backplate 4 is so in each calibration process, the micrometric displacement amount of mobile object 0 is constant.
2, functional part
0) mobile object 0
1) flexible sheet 1
Flexible sheet 1 is that a kind of thickness is the stainless steel substrates of about 3mm, i.e. a kind of micro-displacement sensor, and in this device, its stressed micrometric displacement amount that produces is about 40 μ m.
2) backplate 4
Backplate 4 is a kind of corrosion resistant plates, is rigidly connected with runner 5 and weight 12 respectively, consists of a pendulum architecture; When weight 12 moves up and down, make runner 5 do clockwise direction or counterclockwise rotate in small angle range.
3) hang spring 3
Hang spring 3 is a kind of stainless steel steel wires.
4) stepper motor 6
Stepper motor 6 is a kind of three-phase DC motors, can realize rotating.
5) other functional part is part commonly used.
Two, operation instruction
The base 14 of this caliberating device tightens up with ground, and mobile object 0 and pantograph baseline are in the same level position; Adjust the position of mobile object 0, the output of pantograph sensor is in measurement range.
During pantograph routine work state, weight 12 is in a high position, makes flexible sheet 1 be in the state of not stressing, and avoids the long-time stressed generation inelastic deformation of flexible sheet 1 and horizontal wire drawing 3.
Three, experiment situation
By to stepper motor 6 rotatings controls, realize the stepper motor workflow.Stepper motor 6 rotates 10 times totally, obtains 11 sensor output voltage values, thereby obtains 10 voltage differences.Each stepper motor 6 stops beginning reading after 60S after rotating and stopping, and guarantees that sensor is in steady state (SS).
Stepper motor workflow such as following table;
| |
0 | Reading (stablizing reading before electric machine rotation) | Remarks: weight is in a high position |
| Sequence number | 1 | Forward 14 circles stop 60s, reading | Remarks: weight is in low level |
| Sequence number | 2 | Counter-rotating 14 circles stop 60s, reading | Remarks: weight is in a high position |
| Sequence number | 3 | Forward 14 circles stop 60s, reading | Remarks: weight is in low level |
| Sequence number | 4 | Counter-rotating 14 circles stop 60s, reading | Remarks: weight is in a high |
| Sequence number | |||
| 5 | Forward 14 circles stop 60s, reading | Remarks: weight is in low level | |
| Sequence number | 6 | Counter-rotating 14 circles stop 60s, reading | Remarks: weight is in a high position |
| Sequence number | 7 | Forward 14 circles stop 60s, reading | Remarks: weight is in low |
| Sequence number | |||
| 8 | Counter-rotating 14 circles stop 60s, reading | Remarks: weight is in a high position | |
| Sequence number | 9 | Forward 14 circles stop 60s, reading | Remarks: weight is in low |
| Sequence number | |||
| 10 | Counter-rotating 14 circles stop 60s, reading | Remarks: weight is in a high position |
Whole calibration process is calculated number by data and is adopted register and automatically complete, calibration result as shown in Figure 2:
As seen from Figure 2, the demarcation repeatability of caliberating device is 0.09%, much smaller than 1% of standard-required.Through 5 groups of data tests, the demarcation repeatability of this caliberating device is respectively: 0.09%, 0.13%, 0.11%, 0.13%, 0.17%; Demarcating repeatability is stabilized in 2/1000ths.
This shows, this caliberating device adopts the calibration principle of elastic deformation to make its structure very simple and reliable, has solved from root the series of problems that existing caliberating device exists.Cost of manufacture reduces, can with existing data acquisition unit perfect adaptation, for the long deformation monitoring of pantograph provides good assurance.
Claims (1)
1. pantograph high precision membranes displacement calibrating device that declines is characterized in that:
Comprise mobile object (0), flexible sheet (1), diaphragm seat (2), horizontal wire drawing (3), backplate (4), runner (5), stepper motor (6), upper cover plate (7.1), lower cover (7.2), driving gear (8), screw rod (9), follower gear (10), hang spring (11), weight (12), vertical rod (13), base plate (14) and rotaring wheeling base (15);
Its position and annexation are:
On base plate (14), from left to right, be respectively arranged with diaphragm seat (2), rotaring wheeling base (15) and vertical rod (13);
Be provided with flexible sheet (1) on diaphragm seat (2);
Be provided with a stationary shaft on rotaring wheeling base (15), the center pit of runner (5) is enclosed within on stationary shaft;
Upper cover plate (7.1) and lower cover (7.2) connect into a support with vertical rod (13) respectively, be provided with stepper motor (6) on upper cover plate (7.1), on lower cover (7.2), from left to right, be respectively arranged with intermeshing driving gear (8) and follower gear (10), the rotating shaft of stepper motor (6) is connected 8 with driving gear) central shaft connect, the external thread of the center internal thread of follower gear (10) and screw rod (9) is intermeshing, and the lower end of screw rod (9) is connected 12 by hang spring (11) with weight) connect;
Mobile object (0), flexible sheet (1), horizontal wire drawing (3) are connected 5 with runner) connect successively; Runner (5), backplate (4) and weight (12) are rigidly connected successively, consist of a pendulum architecture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100350867A CN103105150A (en) | 2013-01-30 | 2013-01-30 | High-accuracy diaphragm-type micrometric displacement calibration device of extensometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100350867A CN103105150A (en) | 2013-01-30 | 2013-01-30 | High-accuracy diaphragm-type micrometric displacement calibration device of extensometer |
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| CN103105150A true CN103105150A (en) | 2013-05-15 |
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| CN2013100350867A Pending CN103105150A (en) | 2013-01-30 | 2013-01-30 | High-accuracy diaphragm-type micrometric displacement calibration device of extensometer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454085A (en) * | 2013-07-19 | 2013-12-18 | 浙江吉利罗佑发动机有限公司 | Transmission static torque test platform and angle detection and calibration method thereof |
| CN104165612A (en) * | 2014-08-27 | 2014-11-26 | 广州大学 | Novel displacement sensor transformation and amplification device |
| CN113310622A (en) * | 2021-05-26 | 2021-08-27 | 安徽工业大学 | Micro-range quasi-static calibration pressure generator and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0270123A2 (en) * | 1986-12-05 | 1988-06-08 | Pfister GmbH | Method and apparatus for calibrating and/or checking of load cells |
| CN1278603A (en) * | 1999-08-31 | 2001-01-03 | 中国地震局地震研究所 | Short-base line telescoping instrument |
| CN1804661A (en) * | 2006-01-19 | 2006-07-19 | 中国地震局地震研究所 | Differential type short-based extensometer |
| CN101216390A (en) * | 2008-01-11 | 2008-07-09 | 大连理工大学 | Micro-element dynamic performance off-chip tensile test experimental bench |
| CN203177827U (en) * | 2013-01-30 | 2013-09-04 | 中国地震局地震研究所 | Extensometer high precision diaphragm micro-displacement calibration device |
-
2013
- 2013-01-30 CN CN2013100350867A patent/CN103105150A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0270123A2 (en) * | 1986-12-05 | 1988-06-08 | Pfister GmbH | Method and apparatus for calibrating and/or checking of load cells |
| CN1278603A (en) * | 1999-08-31 | 2001-01-03 | 中国地震局地震研究所 | Short-base line telescoping instrument |
| CN1804661A (en) * | 2006-01-19 | 2006-07-19 | 中国地震局地震研究所 | Differential type short-based extensometer |
| CN101216390A (en) * | 2008-01-11 | 2008-07-09 | 大连理工大学 | Micro-element dynamic performance off-chip tensile test experimental bench |
| CN203177827U (en) * | 2013-01-30 | 2013-09-04 | 中国地震局地震研究所 | Extensometer high precision diaphragm micro-displacement calibration device |
Non-Patent Citations (1)
| Title |
|---|
| 杨江等: "SS-Y伸缩仪新型标定装置的研制", 《大地测量与地球动力学》, vol. 30, no. 5, 31 October 2010 (2010-10-31) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454085A (en) * | 2013-07-19 | 2013-12-18 | 浙江吉利罗佑发动机有限公司 | Transmission static torque test platform and angle detection and calibration method thereof |
| CN103454085B (en) * | 2013-07-19 | 2016-03-30 | 浙江吉利罗佑发动机有限公司 | Transmission static torque test platform and angle thereof detect scaling method |
| CN104165612A (en) * | 2014-08-27 | 2014-11-26 | 广州大学 | Novel displacement sensor transformation and amplification device |
| CN113310622A (en) * | 2021-05-26 | 2021-08-27 | 安徽工业大学 | Micro-range quasi-static calibration pressure generator and method |
| CN113310622B (en) * | 2021-05-26 | 2022-10-04 | 安徽工业大学 | Micro-range quasi-static calibration pressure generator and method |
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Application publication date: 20130515 |