CN106767360A - A kind of digital vernier formula crack gauge and its application method for Fracture Deformation monitoring - Google Patents
A kind of digital vernier formula crack gauge and its application method for Fracture Deformation monitoring Download PDFInfo
- Publication number
- CN106767360A CN106767360A CN201611266486.9A CN201611266486A CN106767360A CN 106767360 A CN106767360 A CN 106767360A CN 201611266486 A CN201611266486 A CN 201611266486A CN 106767360 A CN106767360 A CN 106767360A
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- crack
- vernier
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- main scale
- deformation
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims abstract description 11
- 238000005553 drilling Methods 0.000 claims abstract description 9
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 11
- 239000004973 liquid crystal related substance Substances 0.000 claims description 7
- 239000004677 Nylon Substances 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of digital vernier formula crack gauge and its application method for Fracture Deformation monitoring, the digital vernier formula crack gauge includes fixed mechanism and measuring mechanism；The fixed mechanism includes being opened in the drilling of crack both sides and the expansion tube being arranged in each drilling；The measuring mechanism includes that rod support, one end are arranged on the electronic cursor of the main scale on the rod support and slip cap on the main scale, one end of the main scale is fixedly mounted on rod support by braking bolt, in the expansion tube that the rod support passes through regulating bolt side installed therein, the electronic cursor includes the capacitive displacement transducer for the variable quantity of displacement to be converted into digital quantity and the LCDs for showing the digital quantity of measurement, and the liquid electronic cursor is arranged in the expansion tube of opposite side by regulating bolt.The present invention can quickly, it is easy, efficiently, the reliable deformation data for obtaining crack, have the advantages that with low cost, certainty of measurement is high.
Description
Technical Field
The invention belongs to the technical field of crack deformation monitoring, relates to a crack deformation monitoring instrument, and particularly relates to a digital vernier type crack meter for crack deformation monitoring and a using method thereof.
Background
The progress of science and technology has benefited the deformation monitoring field, and a large amount of 'high-precision' instrument equipment is developed and used in deformation monitoring in succession, and whether apparent or shallow layer, more or deep monitoring instrument should be the best. The use of these monitoring instruments significantly improves the monitoring efficiency and makes the monitoring data more reliable. The crack monitoring instrument used at present is mainly researched and developed on the basis of an electronic displacement sensor, but the electronic displacement sensor belongs to a precise electronic instrument, has high requirements on use environment and installation and high manufacturing cost, and therefore, the cost performance is lower in the use of the monitoring instrument.
Another common method for monitoring the crack is to arrange monitoring nails on both sides of the crack, and to manually measure the distance between the two monitoring nails by a steel tape at regular intervals, thereby obtaining the crack deformation data. Although the method is convenient to implement and low in cost, the steel tape is low in precision, greatly influenced by human factors and large in measurement error.
Disclosure of Invention
The invention aims to provide a digital vernier type crack meter for crack deformation monitoring and a using method thereof, which can quickly, simply, efficiently and reliably obtain the deformation data of cracks and have the advantages of low cost and high measuring precision.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a digital vernier type crack meter for crack deformation monitoring is used for measuring cracks generated by rigid materials and comprises a fixing mechanism and a measuring mechanism; wherein,
the fixing mechanism comprises drill holes arranged on two sides of the crack and expansion pipes arranged in each drill hole, and the connecting line between the drill holes on the two sides is consistent with the deformation direction of the crack;
the measuring mechanism includes that ruler seat, one end set up main scale and slip cover on the ruler seat are located electron vernier on the main scale, the one end of main scale is passed through brake bolt fixed mounting on the ruler seat, the ruler seat is installed in the expansion pipe of one side wherein through adjusting bolt, the electron vernier is including the liquid crystal display who is used for converting the variable quantity of displacement into the capacitance grid displacement sensor of digital quantity and is used for showing measured digital quantity, liquid crystal electron vernier passes through adjusting bolt and installs in the expansion pipe of opposite side, the scale interval of main scale is 1mm, the measurement accuracy of electron vernier is 0.01 mm.
According to the technical scheme, the maximum measuring range of the main ruler is 200 mm.
According to the technical scheme, a plurality of brake bolt holes matched with the brake bolts are uniformly formed in the side face of the main ruler along the length direction.
According to the technical scheme, the expansion pipe is a nylon expansion pipe.
According to the technical scheme, a pair of drill holes are respectively formed in two sides of the crack, wherein the connecting line of one pair of drill holes for mounting the ruler base is consistent with the length direction of the crack, and the connecting line of the other pair of drill holes for mounting the electronic vernier is consistent with the deformation direction of the crack.
Correspondingly, the invention also provides a using method of the digital vernier type joint meter, which comprises the following steps:
s1, preliminarily judging the crack deformation direction, respectively placing the ruler base and the electronic vernier on two sides of the crack, keeping the length direction of the electronic vernier consistent with the crack deformation direction, placing the electronic vernier in a position of 0mm, starting the electronic vernier to return to zero, adjusting the distance between the ruler base and the electronic vernier and the crack, and marking the positions of the ruler base and the electronic vernier;
s2, drilling holes at the marked positions, cleaning the drilled holes, and filling the expansion pipes into the drilled holes;
s3, fixing the main scale and the scale base through a brake bolt, sleeving the electronic vernier on the main scale, installing the scale base in the expansion pipe on one side of the crack through an adjusting bolt, and installing the electronic vernier in the expansion pipe on the other side of the crack through the adjusting bolt, namely completing the installation of the vernier type crack meter;
s4, obtaining a crack deformation value: the electronic vernier slides on the main scale for a corresponding distance along with the deformation of the crack, the readings before and after the crack deformation are read through the electronic vernier, the subtraction of the two readings is the crack deformation value, the positive value represents that the crack is opened, and the negative value represents that the crack is contracted.
The invention has the following beneficial effects: the digital display vernier caliper is low in cost, simple and reliable in structure, high in precision and convenient in reading, is used as a measuring tool, the caliper base and the electronic vernier are fixed on two sides of a crack through the adjusting bolt and the expansion pipe, the mounting and using processes are slightly limited by the environment, the mounting and using processes are simple, convenient, efficient and firm, the electronic vernier moves a corresponding distance on the main caliper along with the deformation of the crack, the readings before and after the deformation of the crack are read through the electronic vernier, the difference value of the two last readings is a crack deformation value, the data acquisition precision is high and can reach 0.01mm, and the expansion or contraction deformation value of the crack can be reflected by reading the value through the electronic vernier arranged on the caliper.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a front view of an embodiment of the present invention;
FIG. 2 is a top view of an embodiment of the present invention;
FIG. 3 is a schematic structural view of a ruler base in the embodiment of the invention;
FIG. 4 is a side view of FIG. 3;
FIG. 5 is a schematic diagram of an electronic cursor according to an embodiment of the present invention;
FIG. 6 is a side view of FIG. 5;
FIG. 7 is a schematic structural view of an expansion tube in an embodiment of the invention;
FIG. 8a is a schematic illustration of the installation use step S1 of the embodiment of the present invention;
FIG. 8b is a first schematic diagram of the installation and use step S2 according to the embodiment of the present invention;
FIG. 8c is a second schematic diagram of the installation and use step S2 according to the embodiment of the present invention;
fig. 8d is a schematic diagram of the installation and use step S3 according to the embodiment of the present invention.
In the figure: 1-main ruler; 2-an electronic cursor; 3-a ruler base; 4-a brake bolt; 5-adjusting the bolt; 6-expansion pipe; 7-brake bolt holes; 8-cracking; 9-labeling; 10-drilling.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In a preferred embodiment of the present invention, as shown in fig. 1-8 d, a digital vernier type crack meter for crack deformation monitoring comprises a fixing mechanism and a measuring mechanism; wherein,
as shown in fig. 8 a-8 c, the fixing mechanism comprises drill holes 10 arranged at two sides of the crack 8 and an expansion pipe 6 arranged in each drill hole 10, wherein the connection line between the drill holes at the two sides is consistent with the deformation direction of the crack, the distance between the drill hole at the left side of the crack and the edge at the left side of the crack is controlled to be 1.0-2.0 cm, the distance between the drill hole at the right side of the crack and the edge at the right side of the crack is controlled to be 3-5 cm, the fixing mechanism can also be flexibly arranged according to the actual shape of the crack on site, the proper drill hole distance can be adjusted to fully meet the measuring range requirement of the crack meter;
as shown in fig. 1-7, the measuring mechanism includes a ruler base 3, a main ruler 1 with one end disposed on the ruler base 3, and an electronic vernier 2 slidably sleeved on the main ruler 1, one end of the main ruler 1 is fixedly mounted on the ruler base 3 through a brake bolt 4, the ruler base 3 is mounted in an expansion tube 6 on one side thereof through an adjusting bolt 5, the electronic vernier 2 includes a grid displacement sensor for converting the variation of displacement into digital quantity and a liquid crystal display for displaying the measured digital quantity, the liquid crystal electronic vernier 2 is mounted in the expansion tube 6 on the other side through the adjusting bolt 5, the scale interval of the main ruler is 1mm, and the measurement accuracy of the electronic vernier is 0.01 mm.
In the preferred embodiment of the present invention, as shown in fig. 1, the deformation range of the crack to be measured is theoretically 1mm to 200mm, so the maximum measuring range of the main scale in this embodiment is 200 mm.
In the preferred embodiment of the invention, as shown in fig. 2, a plurality of brake bolt holes 7 matched with the brake bolts are uniformly arranged on the side surface of the main ruler along the length direction, and the distance between the ruler seat and the edge of the crack can be flexibly adjusted by matching the ruler seat and different brake bolt holes on the main ruler according to the shape of the crack, so that the field installation and implementation are facilitated.
In a preferred embodiment of the present invention, as shown in fig. 7, the expansion tube is a nylon expansion tube.
In the preferred embodiment of the present invention, as shown in fig. 8a and 8b, a pair of drilling holes 10 are respectively opened at both sides of the slit 8, wherein the connecting line of the drilling holes for mounting the ruler base is consistent with the length direction of the slit, and the connecting line of the drilling holes for mounting the electronic vernier is consistent with the deformation direction of the slit.
Correspondingly, the invention also provides a using method of the digital vernier type joint meter, which comprises the following steps:
s1, as shown in figure 8a, preliminarily judging the crack deformation direction, respectively placing the ruler base 3 and the electronic vernier 2 on two sides of the crack 8, keeping the length direction of the electronic vernier consistent with the crack deformation direction, placing the electronic vernier in 0mm to start the electronic vernier to return to zero, adjusting the distance between the ruler base and the electronic vernier and the crack, and making marks 9 at the positions of the ruler base and the electronic vernier;
s2, as shown in figures 8b and 8c, drilling a hole at the mark 9, cleaning the inside of the drilled hole 10, and installing the expansion pipe 6 in the drilled hole;
s3, as shown in figure 8d, fixing the main ruler 1 and the ruler base 3 through the brake bolt 4, sleeving the electronic vernier 2 on the main ruler 1, then installing the ruler base 3 in the expansion pipe 6 at one side of the crack through the adjusting bolt 5, and installing the electronic vernier 2 in the expansion pipe 6 at the other side of the crack through the adjusting bolt 5, namely completing the installation of the vernier type crack meter;
s4, obtaining a crack deformation value: the electronic vernier slides on the main scale for a corresponding distance along with the deformation of the crack, the readings before and after the crack deformation are read through the electronic vernier, the subtraction of the two readings is the crack deformation value, the positive value represents that the crack is opened, and the negative value represents that the crack is contracted.
When the device is specifically applied, the device consists of 1 electronic display vernier consisting of 1 main ruler, 1 capacitive grating displacement sensor and 1 liquid crystal display screen, 1 ruler seat, 2 brake bolts, 4 6mm hexagon socket adjusting bolts and 4 8mm nylon expansion pipes, and the installation steps are as follows:
1. combining a digital vernier type crack meter, preliminarily judging the crack deformation direction, keeping the electronic vernier consistent with the deformation direction, placing the electronic vernier in a position of 0mm to start the electronic vernier to return to zero, firstly adjusting a proper distance between a ruler seat and the electronic vernier, then adjusting the position of the ruler seat, aligning a brake bolt hole of the ruler seat with a brake bolt hole of a main ruler, then placing the crack between the ruler seat and the electronic vernier, and marking the corresponding positions of 4 adjusting bolts on the slope surface;
2. a common electric hammer uses an 8mm drill bit to punch holes at the marked positions and clean the drilled holes; loading the nylon expansion pipe into the drill hole;
3. combining the crack meter with an inner hexagonal adjusting bolt and screwing the crack meter and the inner hexagonal adjusting bolt into a nylon expansion pipe for fixing, namely completing installation;
4. and reading the numerical value of the display screen to obtain an initial value.
The invention mainly uses a digital display board vernier type crack meter to rapidly measure the width of the crack and reflect the deformation of the crack, thereby achieving the purpose of monitoring the deformation of the crack.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (6)
1. A digital vernier type crack meter for crack deformation monitoring is used for measuring cracks generated by rigid materials, and is characterized by comprising a fixing mechanism and a measuring mechanism; wherein,
the fixing mechanism comprises drill holes arranged on two sides of the crack and expansion pipes arranged in each drill hole, and the connecting line between the drill holes on the two sides is consistent with the deformation direction of the crack;
the measuring mechanism includes that ruler seat, one end set up main scale and slip cover on the ruler seat are located electron vernier on the main scale, the one end of main scale is passed through brake bolt fixed mounting on the ruler seat, the ruler seat is installed in the expansion pipe of one side wherein through adjusting bolt, the electron vernier is including the liquid crystal display who is used for converting the variable quantity of displacement into the capacitance grid displacement sensor of digital quantity and is used for showing measured digital quantity, liquid crystal electron vernier passes through adjusting bolt and installs in the expansion pipe of opposite side, the scale interval of main scale is 1mm, the measurement accuracy of electron vernier is 0.01 mm.
2. The digital vernier caliper of claim 1 wherein the maximum range of said main scale is 200 mm.
3. The digital vernier caliper according to claim 1, wherein a plurality of brake bolt holes matched with the brake bolts are uniformly formed in the side surface of the main scale along the length direction.
4. The digital vernier caliper of claim 1 wherein said expansion tube is a nylon expansion tube.
5. The digital vernier caliper according to claim 1, wherein a pair of holes are formed on both sides of the slit, wherein a connecting line of one pair of holes for mounting the rule base is identical to the length direction of the slit, and a connecting line of the other pair of holes for mounting the electronic vernier is identical to the deformation direction of the slit.
6. A method of using the digital vernier caliper as claimed in any one of the preceding claims, comprising the steps of:
s1, preliminarily judging the crack deformation direction, respectively placing the ruler base and the electronic vernier on two sides of the crack, keeping the length direction of the electronic vernier consistent with the crack deformation direction, placing the electronic vernier in a position of 0mm, starting the electronic vernier to return to zero, adjusting the distance between the ruler base and the electronic vernier and the crack, and marking the positions of the ruler base and the electronic vernier;
s2, drilling holes at the marked positions, cleaning the drilled holes, and filling the expansion pipes into the drilled holes;
s3, fixing the main scale and the scale base through a brake bolt, sleeving the electronic vernier on the main scale, installing the scale base in the expansion pipe on one side of the crack through an adjusting bolt, and installing the electronic vernier in the expansion pipe on the other side of the crack through the adjusting bolt, namely completing the installation of the vernier type crack meter;
s4, obtaining a crack deformation value: the electronic vernier slides on the main scale for a corresponding distance along with the deformation of the crack, the readings before and after the crack deformation are read through the electronic vernier, the subtraction of the two readings is the crack deformation value, the positive value represents that the crack is opened, and the negative value represents that the crack is contracted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611266486.9A CN106767360A (en) | 2016-12-31 | 2016-12-31 | A kind of digital vernier formula crack gauge and its application method for Fracture Deformation monitoring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611266486.9A CN106767360A (en) | 2016-12-31 | 2016-12-31 | A kind of digital vernier formula crack gauge and its application method for Fracture Deformation monitoring |
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| CN106767360A true CN106767360A (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611266486.9A Pending CN106767360A (en) | 2016-12-31 | 2016-12-31 | A kind of digital vernier formula crack gauge and its application method for Fracture Deformation monitoring |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111089527A (en) * | 2019-12-10 | 2020-05-01 | 上海建工集团股份有限公司 | Pavement crack monitoring device and monitoring method |
| CN112782066A (en) * | 2021-02-07 | 2021-05-11 | 贵州省交通规划勘察设计研究院股份有限公司 | Device and method for high-precision measurement of rock weathering rate |
| CN113686250A (en) * | 2021-09-23 | 2021-11-23 | 中建八局南方建设有限公司 | Building crack monitoring device and using method |
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| CN113686250A (en) * | 2021-09-23 | 2021-11-23 | 中建八局南方建设有限公司 | Building crack monitoring device and using method |
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