CN112378364A - Calibrating device and calibrating method for convergence meter - Google Patents
Calibrating device and calibrating method for convergence meter Download PDFInfo
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- CN112378364A CN112378364A CN202011312727.5A CN202011312727A CN112378364A CN 112378364 A CN112378364 A CN 112378364A CN 202011312727 A CN202011312727 A CN 202011312727A CN 112378364 A CN112378364 A CN 112378364A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000013519 translation Methods 0.000 claims abstract description 42
- 238000005259 measurement Methods 0.000 claims abstract description 21
- 238000006073 displacement reaction Methods 0.000 claims abstract description 16
- 239000000428 dust Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 238000004458 analytical method Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/16—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance of clearance between spaced objects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
Abstract
The invention belongs to the technical field of precision instrument manufacturing and precision measurement and measurement, and particularly relates to a calibrating device and a calibrating method for a convergence meter. The high-precision manual translation measuring device comprises a base, a first hook seat arranged on the base, a high-precision manual translation table connected with the base in a sliding mode, a linear grating ruler arranged on the side face of the high-precision manual translation table, a second hook seat arranged on the high-precision manual translation table, and a convergence meter to be measured arranged between the first hook seat and the second hook seat, wherein the linear grating ruler is connected with a grating ruler digital display meter through a data line. The convergence meter calibrating device is used for calibrating, the high-precision manual translation table adopts double guide rails, the coaxiality of the stretching of the convergence meter to be tested is improved, a displacement measuring system consisting of the linear grating ruler and the grating ruler digital display table displays the moving displacement of the high-precision manual translation table in real time, the measuring precision of the convergence meter calibrating device to be tested is improved, the calibrating range of the convergence meter to be tested is enlarged, and the whole device is high in measuring precision and sensitivity.
Description
Technical Field
The invention belongs to the technical field of precision instrument manufacturing and precision measurement and measurement, and particularly relates to a calibrating device and a calibrating method for a convergence meter.
Background
The convergence meter is suitable for measuring the small change of the distance between two points in any direction around a tunnel, a roadway, a chamber and other engineering surrounding rocks, and achieves the purposes of evaluating the engineering stability, researching the deformation development rule of the engineering surrounding rocks and supports and determining reasonable support parameters. Convergence measurements are well known as one of the essential items in underground engineering metrology. The convergence meter calibrating device is an important precision measuring instrument for calibrating the measurement precision, stability and reliability of the convergence meter. At present, the solutions for calibrating the convergence meter mainly include the following solutions, each of which has advantages and disadvantages.
The invention relates to a first technical scheme (refer to Jia Ming Qiang, Zhao DongL, Liu Da Zhong, Gao ran, Xia Xiao hong, Sun Hui Qing, the invention patent: 201220049847), which is a calibrating device composed of a workbench, a translation device, a micrometer (micrometer) and a standard gauge block, and is the first device for calibrating the integral measurement precision of a convergence meter in China at present, and the invention patent has the advantages that: the calibrating device has simple structure and is easy to realize the measurement precision of the calibration convergence meter. Its disadvantages are: the coaxiality of a convergence meter, a workbench, a translation device, a micrometer and the like is difficult to grasp, secondly, most of the prior digital display convergence meters have the measurement precision of 0.1mm and the resolution of 0.01mm, and the micrometer meter (micrometer) adopted by the invention has the highest measurement precision of 0.01mm and has smaller measuring range of 150mm at the same time.
In the second prior art (see Yanjing ceramic, Zhang Heng City, etc. "tension control error and measurement accuracy analysis of convergence meter", geotechnical engineering, No. 4 of 2000, general reference to the fourth institute of engineering design), the research analyzes the influence of the constant tension control accuracy of the convergence meter on the measurement accuracy of the convergence meter through theoretical calculation. The research has certain practical value, but other factors influencing the measurement accuracy of the convergence meter are not analyzed.
In the existing technical scheme III (refer to Liyubao and Yangli, convergence meter inspection and precision analysis, survey and drawing report, No. 3 of 2009, the transport college of southeast university), the research is used for independently and continuously observing the convergence meter in a laboratory environment and carrying out variance analysis and t distribution hypothesis inspection on an observed value, so that the working stability of the convergence meter is calibrated, and the method has certain application value and practical significance and has the defect of lacking powerful analysis on the measurement precision of the convergence meter.
Disclosure of Invention
The invention aims to overcome the defects that the coaxiality of a convergence meter, a workbench, a translation device, a micrometer and the like is difficult to master and the measurement accuracy of the convergence meter is lack of analysis in the prior art, and provides a device and a method for calibrating the convergence meter, which can accurately record the tensile displacement of the convergence meter to be tested and further can obviously achieve the aim of calibrating the measurement accuracy of the convergence meter.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a convergence meter calibrating installation, includes the base, installs first couple seat on the base and with base sliding connection's manual translation platform of high accuracy, install the linear grating chi of the manual translation platform side of high accuracy, install the epaxial second couple seat of the manual translation of high accuracy is installed the convergence meter that awaits measuring between first couple seat and the second couple seat, linear grating chi is connected with grating chi digital display table through the data line.
Further, the high-precision manual translation stage comprises a guide rail and a screw rod which are symmetrically arranged on the base, and a sliding block which is connected to the guide rail in a sliding manner; the nut pair of the screw rod is fixed on the sliding block, and the screw rod of the screw rod is coaxially provided with a handle.
Furthermore, the convergence meter to be measured comprises a ruler connecting frame, a tension window and an indicating gauge which are arranged on the ruler connecting frame, an adjusting nut sleeved on the ruler connecting frame, a ruler tape disc arranged on the side surface of the ruler connecting frame, a second hook arranged at the end part of the ruler connecting frame and a first hook connected to the ruler tape disc through a ruler tape; the first hook is hung on the first hook seat, and the second hook is hung on the second hook seat.
Further, a sliding block fastening device is installed on the sliding block.
Further, a dust cover is arranged on the high-precision translation table.
Furthermore, a screw rod locking device is arranged on the high-precision screw rod.
A convergence meter calibration method comprises the following steps:
s1, mounting a first hook seat, a second hook seat, a high-precision manual translation table, a linear grating ruler and a convergence meter to be measured on a base, connecting a grating ruler digital display meter with the linear grating ruler through a data line, adjusting the parallelism between the linear grating ruler and a high-precision lead screw, and then calibrating the grating ruler digital display meter;
s2, opening a tape spool of the convergence meter to be measured, pulling out a second hook to be placed in a measuring point hole of a measuring point at one end, pulling the convergence meter to be measured to a measuring point at the other end, hooking the first hook into a measuring point hole of a measuring point at the other end, adjusting a tape hole, inserting a tape hole pin, and fixing the tape spool and the tape connecting frame by using a tape spool in the tape connecting frame; connecting a first hook of the convergence meter to be measured with a first hook seat, and changing the length of a machine body of the convergence meter to be measured by adjusting an adjusting nut to generate constant tension on the tape;
s3, clearing all the numerical values of the indicator and the grating ruler digital display of the convergence meter to be detected, adjusting a handle on a high-precision manual translation table, and driving a sliding block to move by a high-precision lead screw to obtain the numerical value phi 1 of the indicator and the numerical value phi 2 of the grating ruler digital display of the convergence meter to be detected, wherein the phi 1 is the relative displacement of the convergence meter to be detected when the convergence meter detects the self stretching, and the phi 2 is the relative displacement of the convergence meter to be detected when a calibration device of the convergence meter detects the stretching of the convergence meter to be detected;
and S4, taking the numerical value phi 2 of the grating ruler digital display table as the reference of the stretching displacement of the convergence meter to be measured, and evaluating the measurement precision of the convergence meter to be measured according to the values of phi 1-phi 2.
The calibrating device and the calibrating method for the convergence meter have the beneficial effects that:
1. according to the invention, the high-precision manual translation table is used for stretching the convergence meter to be tested, and the high-precision manual translation table adopts double guide rails, so that the stretching coaxiality of the convergence meter to be tested is obviously improved. The displacement measuring system consisting of the linear grating ruler and the grating ruler digital display meter is used for displaying the moving displacement of the high-precision manual translation table in real time, and the linear grating ruler and the grating ruler digital display meter matched with the linear grating ruler are adopted, so that the measuring precision of the calibrating device of the convergence meter to be measured is remarkably improved, and the calibrating range of the convergence meter to be measured is enlarged.
2. The invention adopts the high-precision lead screw to drive the movable slide block to move, thereby stretching the convergence meter to be tested and obviously reducing the stretching interval of the convergence meter to be tested. The high-precision screw rod and the movable sliding block in the high-precision translation table are respectively provided with the locking device, so that the influence of the defects of the convergence meter on the calibration of the convergence meter is obviously reduced, and the whole device is high in measurement precision and sensitivity.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a front view of a high precision manual translation platform of an embodiment of the present invention;
FIG. 3 is a top view of a high precision manual translation stage according to an embodiment of the present invention;
FIG. 4 is a bottom view of a high precision manual translation stage of an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a convergence meter to be measured according to an embodiment of the present invention.
In the figure, the device comprises a base 1, a base 2, a first hook seat 3, a high-precision manual translation table 31, a guide rail 32, a screw rod 33, a sliding block 34, a handle 35, a screw rod locking device 36, a dust cover 37, a sliding block fastening device 4, a linear grating ruler 5, a second hook seat 6, a convergence meter to be measured 61, a ruler connecting frame 62, a tension window 63, an indicating meter 64, an adjusting nut 65, a ruler belt disc 66, a first hook 67, a ruler belt 68, a second hook 69, a ruler clip 7 and a grating ruler digital display meter.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
The specific embodiment of the convergence meter calibrating device and the calibrating method of the invention as shown in fig. 1-5 comprises a base 1, a first hook base 2 installed on the base 1, a high-precision manual translation stage 3 connected with the base 1 in a sliding manner, a linear grating scale 4 installed on the side surface of the high-precision manual translation stage 3, a second hook base 5 installed on the high-precision manual translation stage 3, and a convergence meter 6 to be measured installed between the first hook base 2 and the second hook base 5, wherein the linear grating scale 4 is connected with a grating scale digital display meter 7 through a data line. Wherein, the high-precision manual translation stage 3 comprises a guide rail 31 and a screw rod 32 which are symmetrically arranged on the base 1 and a slide block 33 which is connected on the guide rail 31 in a sliding way; the nut pair of the screw rod 32 is fixed on the sliding block 33, and the screw rod of the screw rod 32 is coaxially provided with a handle 34. The main ruler of the linear grating ruler 4 is fixed on the right side of the high-precision manual translation table 3, and the auxiliary ruler of the linear grating ruler 4 is connected with the movable sliding block 33. The calibrating device drives the sliding block 33 to move by adjusting the high-precision screw rod 32 of the high-precision manual translation table 3, so that the convergence meter 6 to be measured is stretched, the linear grating ruler 4 measures the relative displacement of the movable sliding block 33 in motion, the grating ruler digital display table 7 displays the displacement read by the linear grating ruler 4, the front data and the rear data are compared, and the characteristics of the convergence meter 6 to be measured, such as measurement precision, stability and the like, are calibrated.
In the embodiment of the present invention, as shown in fig. 5, the convergence gauge 6 to be measured includes a ruler connecting frame 61, a tension window 62 and an indicating gauge 63 which are installed on the ruler connecting frame 61, an adjusting nut 64 which is sleeved on the ruler connecting frame 61, a ruler tape disk 65 which is installed on the side surface of the ruler connecting frame 61, a second hook 68 which is installed on the end portion of the ruler connecting frame 61, and a first hook 66 which is connected to the ruler tape disk 65 through a ruler tape 67; the first hook 66 is hung on the first hook seat 2, and the second hook 68 is hung on the second hook seat 5.
As shown in fig. 2 to 4, the slider 33 is provided with a slider fastening device 37, and when the convergence gauge 6 to be measured is adjusted, the slider fastening device 37 is tightened to fix the positions of the slider 33 and the guide rail 31 so as not to move relatively. A dust cover 36 is provided on the high-precision translation stage to ensure stable sliding of the slider 33 and the guide rail 31.
The calibration method using the convergence meter calibration device comprises the following steps:
s1, a first hook seat 2, a second hook seat 5, a high-precision manual translation table 3, a linear grating ruler 4 and a convergence meter 6 to be measured are installed on a base 1, a grating ruler digital display meter 7 is connected with the linear grating ruler 4 through a data line, the parallelism between the linear grating ruler 4 and a high-precision screw rod 32 is adjusted, and then the grating ruler digital display meter 7 is calibrated;
s2, opening the tape disc 65 of the convergence meter 6 to be measured, pulling out the second hook 68 to be placed in the measuring point hole of the measuring point at one end, pulling the convergence meter 6 to be measured to the measuring point at the other end, hanging the first hook 66 in the measuring point hole of the measuring point at the other end, adjusting the tape hole, inserting a tape hole pin, and fixing the tape 67 and the tape frame 61 by using the tape clip 69 in the tape frame 61; connecting a first hook 66 of the convergence meter 6 to be measured with the first hook seat 2, and changing the length of the machine body of the convergence meter 6 to be measured by adjusting the adjusting nut 64 to generate constant tension on the tape 67;
s3, clearing all the numerical values of the indicator 63 and the grating ruler digital display table 7 of the convergence meter 6 to be measured, adjusting the handle 34 on the high-precision manual translation stage 3, and driving the slide block 33 to move by the high-precision screw rod 32 to obtain the numerical value phi 1 of the indicator 63 of the convergence meter 6 to be measured and the numerical value phi 2 of the grating ruler digital display table 7, wherein phi 1 is the relative displacement of the convergence meter 6 to be measured when the convergence meter 6 to be measured detects self stretching, and phi 2 is the relative displacement of the convergence meter calibrating device when the convergence meter calibrating device detects the stretching of the convergence meter 6 to be measured;
and S4, taking the numerical value phi 2 of the grating ruler digital display table 7 as the reference of the stretching displacement of the convergence meter 6 to be measured, and evaluating the measurement precision of the convergence meter 6 to be measured according to the values of phi 1-phi 2.
It should be understood that the above-described specific embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Obvious variations or modifications which are within the spirit of the invention are possible within the scope of the invention.
Claims (7)
1. A convergence meter calibrating device is characterized in that: including base (1), install first couple seat (2) on base (1) and with base (1) sliding connection's manual translation platform of high accuracy (3), install sharp grating chi (4) of the manual translation platform of high accuracy (3) side, install second couple seat (5) on the manual translation platform of high accuracy (3) and install convergence meter (6) of awaiting measuring between first couple seat (2) and second couple seat (5), sharp grating chi (4) are connected with grating chi digital display table (7) through the data line.
2. A convergence meter calibrating device as claimed in claim 1, wherein: the high-precision manual translation table (3) comprises a translation support fixedly mounted on the base (1), guide rails (31) and a screw rod (32) symmetrically arranged on the translation support, and a sliding block (33) connected to the guide rails (31) in a sliding manner; the nut pair of the screw rod (32) is fixed on the sliding block (33), and a handle (34) is coaxially arranged on the screw rod of the screw rod (32).
3. A convergence meter calibrating device as claimed in claim 1, wherein: the convergence meter (6) to be measured comprises a ruler connecting frame (61), a tension window (62) and an indicating meter (63) which are arranged on the ruler connecting frame (61), an adjusting nut (64) sleeved on the ruler connecting frame (61), a ruler tape reel (65) arranged on the side surface of the ruler connecting frame (61), a second hook (68) arranged at the end part of the ruler connecting frame (61) and a first hook (66) connected to the ruler tape reel (65) through a ruler tape (67); the first hook (66) is hung on the first hook seat (2), and the second hook (68) is hung on the second hook seat (5).
4. A convergence meter calibrating device as claimed in claim 1, wherein: and a sliding block fastening device (37) is arranged on the sliding block (33).
5. A convergence meter calibrating device as claimed in claim 1, wherein: and a dust cover (36) is arranged on the high-precision translation table.
6. A convergence meter calibrating device as claimed in claim 1, wherein: and a screw rod locking device (35) is arranged on the high-precision screw rod (32).
7. A method for calibrating a convergence meter is characterized by comprising the following steps:
s1, a first hook seat (2), a second hook seat (5), a high-precision manual translation table (3), a linear grating ruler (4) and a convergence meter (6) to be measured are installed on a base (1), a grating ruler digital display meter (7) is connected with the linear grating ruler (4) through a data line, the parallelism between the linear grating ruler (4) and a high-precision lead screw (32) is adjusted, and then the grating ruler digital display meter (7) is calibrated;
s2, opening a tape disc (65) of the convergence meter (6) to be measured, pulling out a second hook (68) to be placed in a measuring point hole of a measuring point at one end, pulling the convergence meter (6) to be measured to a measuring point at the other end, hanging a first hook (66) in a measuring point hole of a measuring point at the other end, adjusting the tape hole, inserting a tape hole pin, and fixing a tape (67) and a tape connecting frame (61) by using a tape clip (69) in the tape connecting frame (61); a first hook (66) of the convergence meter (6) to be measured is connected with the first hook seat (2), and the length of the machine body of the convergence meter (6) to be measured is changed by adjusting an adjusting nut (64) to generate constant tension on a ruler tape (67);
s3, clearing all the numerical values of the indicator (63) of the convergence meter (6) to be detected and the grating ruler digital display meter (7), adjusting a handle (34) on the high-precision manual translation stage (3), and driving a sliding block (33) to move by a high-precision screw rod (32) to obtain a numerical value phi 1 of the indicator (63) of the convergence meter (6) to be detected and a numerical value phi 2 of the grating ruler digital display meter (7), wherein phi 1 is the relative displacement of the convergence meter (6) to be detected when stretching per se, and phi 2 is the relative displacement of the convergence meter (6) to be detected when a convergence meter calibrating device detects stretching of the convergence meter (6) to be detected;
and S4, taking the numerical value phi 2 of the grating ruler digital display meter (7) as the reference of the stretching displacement of the convergence meter (6) to be measured, and evaluating the measurement precision of the convergence meter (6) to be measured according to the values of phi 1-phi 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011312727.5A CN112378364A (en) | 2020-11-20 | 2020-11-20 | Calibrating device and calibrating method for convergence meter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011312727.5A CN112378364A (en) | 2020-11-20 | 2020-11-20 | Calibrating device and calibrating method for convergence meter |
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| CN112378364A true CN112378364A (en) | 2021-02-19 |
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| CN202011312727.5A Pending CN112378364A (en) | 2020-11-20 | 2020-11-20 | Calibrating device and calibrating method for convergence meter |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030209657A1 (en) * | 2002-05-08 | 2003-11-13 | Vejtasa David S. | Displacement measurement system and sheet feed system incorporating the same |
| CN103162661A (en) * | 2013-03-08 | 2013-06-19 | 九江精达检测技术有限公司 | Device and method for calibrating convergence meter |
| CN203132528U (en) * | 2013-03-08 | 2013-08-14 | 九江精达检测技术有限公司 | Convergence meter calibrating apparatus |
| CN108534701A (en) * | 2018-06-25 | 2018-09-14 | 中国电建集团中南勘测设计研究院有限公司 | The photogrammetric structure of cavern's convergence monitoring and method |
-
2020
- 2020-11-20 CN CN202011312727.5A patent/CN112378364A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030209657A1 (en) * | 2002-05-08 | 2003-11-13 | Vejtasa David S. | Displacement measurement system and sheet feed system incorporating the same |
| CN103162661A (en) * | 2013-03-08 | 2013-06-19 | 九江精达检测技术有限公司 | Device and method for calibrating convergence meter |
| CN203132528U (en) * | 2013-03-08 | 2013-08-14 | 九江精达检测技术有限公司 | Convergence meter calibrating apparatus |
| CN108534701A (en) * | 2018-06-25 | 2018-09-14 | 中国电建集团中南勘测设计研究院有限公司 | The photogrammetric structure of cavern's convergence monitoring and method |
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Application publication date: 20210219 |
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