CN208887564U - A kind of angle measurement unit - Google Patents
A kind of angle measurement unit Download PDFInfo
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- CN208887564U CN208887564U CN201821787926.XU CN201821787926U CN208887564U CN 208887564 U CN208887564 U CN 208887564U CN 201821787926 U CN201821787926 U CN 201821787926U CN 208887564 U CN208887564 U CN 208887564U
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- Prior art keywords
- measurement unit
- inner core
- stressed plate
- angle measurement
- interior bar
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Abstract
The utility model provides a kind of angle measurement unit, which includes outer cylinder, inner core, stressed plate, resistance ring, conducting wire, and outer cylinder is made of the cylindrical body of upper part and semicylinder two parts of lower part, and inner core includes interior bar, contact jaw.By driving the rotation of interior bar that contact jaw is made to relatively rotate with resistance ring after stressed plate stress.The step of testing soil body strain regime method is set angle measuring device: stressed plate side end face being adjusted to vertical with outer cylinder lower end semi-cylindrical axial plane, which is connect with acquisition device, computer；Establish the corresponding relationship calibration scale of stressed plate rotational angle and test data；Tested point and the space coordinates that theorize are selected, angle measurement unit is put into measurement and comparison measurement results in the soil body to be tested.The beneficial effects of the utility model are: structure is simple, measurement is convenient；It has important practical significance for evaluation engineering safety and theoretical research.
Description
Technical field
The utility model belongs to soil deformation monitoring and soil body constitutive theoryr research field, surveys more particularly to a kind of angle
Measure device and its soil body strain regime test method.Deformation soil deformation angle can be tested out according to the angle measurement unit, into
And calculate the angular strain of the point.
Background technique
It is also the important parameter for measuring soil deformation by the calculated angular strain of angle variable quantity in soil deformation.But
According to existing device and means of testing, measure that soil deformation angle is very difficult, and the numerical value tested out is not accurate, needle
To the problems such as existing Angle Measuring Equipment kind is rare, soil deformation angle measurement means and measuring accuracy be not high, this is practical
It is novel to propose a kind of angle measurement unit and its application method.According to the invention, the deformation of the deformation soil body can be accurately measured
Angle and deformation direction have important application value for the research of this structure of the soil body and project security monitoring.
Summary of the invention
First purpose of the utility model is can to accurately measure deformation soil to solve when the soil body is deformed
The deformation angle and deformation direction of body and a kind of angle measurement unit is provided.
Second purpose of the utility model is to provide test deformation soil deformation state test method.
A kind of in order to achieve the above purposes, the technical solution adopted by the utility model is: angle measurement unit, including cylinder
Outer housing, inner core, interior bar, resistance ring, conducting wire, spring and stressed plate, the cylindrical shell body lower section is semicylinder, top
For cylindrical outer body；The inner core is placed in internal outside cylinder；The interior bar is placed in inner core and, interior bar top concentric with outer housing
Portion stretches out outside interior core cap and connects with the resistance ring contact that the inner core covers, and interior bar bottom passes through inner core bottom and extends to outer cylinder
And it is connected with stressed plate；The spring pocket is mounted in the interior bar being located on inner core bottom；The resistance ring connect with measure traverse line and
It draws through outer housing top cover and is connected with external static strain data acquisition device.
The outer housing and inner core are fixed respectively in interior core cap and cylinder.
The resistance ring is semi-circular, radius 1cm, and resistance value range is the variable resistance of 120 Ω -350 Ω.
The spring is plane scroll spring.
The static data acquisition device uses DH3816 static state vasculum.
The interior bar bottom and stressed plate are bonded through hot melt adhesive to be connected.
Another technical solution of the utility model is: a kind of soil body strain regime test method, steps are as follows:
1) set angle measuring device: stressed plate side end face is adjusted to and is hung down with outer cylinder lower end semi-cylindrical axial plane
Directly, device is connect with acquisition device, acquisition device and computer and opens working condition；
2) corresponding relationship of stressed plate rotational angle and test data is established according to step 1): carrying out device mark before testing
Fixed, manual level stirs stressed plate, and stressed plate and the radial of outer cylinder lower end semi-cylindrical generate angle at this time, to change stress
Plate angle degree, resistance value is measured in the mobile position for driving interior bar rotation and changing on contact jaw and resistance ring after stressed plate stress, electricity
Signal according to resistance value size and change, record value of electrical signals, thus obtain pair of stressed plate rotational angle and test data
It should be related to k；Repeat aforesaid operations, successively stressed plate is stirred clockwise A1, A2, A3, A4 ... multiple angles are generated corresponding
Multiple a negative electricity signal mus 1, μ 2, μ 3, μ 4 ...；Successively stressed plate is stirred counterclockwise again B1, B2, B3, B3 ... multiple angles,
Corresponding will generate multiple electrical signals η 1, η 2, η 3, η 4 ... angle value is established into calibration scale with the corresponding data measured；
3) select tested point and the space coordinates that theorize: setting angle measurement unit is embedded in theoretical maximum deformation side
To vertical place, i.e. inner core is vertical with maximum distortion direction or in each embedding survey in vertical, horizontal and 45 degree of directions of earth's surface angle
Measure device；
4) placed angle measuring device: angle measurement unit is chosen into test angle according to the coordinate system that step 3) is established and is put
Enter in the soil body to be tested, cover test device with soil and be gently compacted, conducting wire and external static strain data are acquired and filled
It sets and is connected, connect dummy gauge, external static strain in the compensation channel of external static strain data acquisition device
Data acquisition device is connect with computer, and zeroing setting is done in computer corresponding software interface, will be electric in software input interface
Balk ring resistance value input strain one column of resistance value；
5) measure: when the soil body is deformed, soil applies pressure to the stressed plate of angle measurement unit, makes the contact of interior bar
End generates displacement with resistance ring, and then generates change in electric, and when stressed plate stress rotates clockwise, contact jaw is relatively electric
Balk ring rotates counterclockwise, and device resistance value becomes larger, and electric signal becomes smaller, and computer end shows that numerical value is negative value；When stressed plate stress
It rotates counterclockwise, contact jaw relative resistance ring rotates clockwise, and device resistance value becomes smaller, and electric signal becomes larger, computer end
Display numerical value is positive value；
6) measurement result is calculated: according to the data of external static strain data acquisition device acquisition, according to following formula
Solve calibration coefficient k, negative electricity signal value takes absolute value when calculating:
A=μ k (1)
A is to need deformation angle to be tested in formula, and μ is value of electrical signals,For deformation angle mean value,It is equal for value of electrical signals
Value, corresponding relationship of the k between deformation angle and value of electrical signals, i.e. calibration coefficient；
The calibration scale of corresponding step 2) finds out angle change value, and concrete principle formula is as follows.
In formula, 0 °≤n≤180 ° in the utility model；R is 1cm；R is resistance loop resistance, and resistance value is 120 Ω -350
Ω；R1Resistance value when being relatively rotated for contact jaw and resistance ring；IATo pass through the electric current of the device；Voltage U is that external static state is answered
Become data acquisition device to provide；It can be converted into electric signal by external static strain data acquisition device, and according to formula (1)
Test data is converted into input computer software；
According to test gained angle change values, following formula (5) are substituted into, the shearing strain value of the deformation soil body is calculated:
In formula, γ is shearing strain value, and ω is semicylinder plane included angle acute angle below stress plate face and cylindrical shell body
Value, 90 degree of present apparatus value, i.e. pi/2, Δ ω are the soil body angular distortion value measured.
The beneficial effects of the utility model are: angle measurement unit, in tested deformation process, the deformation soil body can push away
Dynamic stressed plate rotation, and then change the relative position of contact jaw and resistance ring, to change electric signal, to measure test body deformation
Angle has important practical significance for evaluation engineering safety and theoretical research.Survey of the invention compared with common survey device
Dose-effect fruit improves 53%~70%, significant increase deformation test effect.
Detailed description of the invention
Fig. 1 is the angle measurement unit structural schematic diagram of the utility model；
Fig. 2 is the angle measurement equipment cylindrical case structural schematic diagram of the utility model；
Fig. 3 is the angle measurement equipment inner core schematic diagram of the utility model.
In figure:
1. 4. conducting wire of cylindrical case 2. inner core, 3. resistance ring, 5. spring
11. 14. inner hole of semicylinder 12. cylindrical body, 13. wire guide, 15. screw hole
21. 22. contact jaw of interior bar, 23. stressed plate
Specific embodiment
The angle measurement unit of the utility model and its application method are illustrated with reference to the accompanying drawing.
The angle measurement unit and its application method of the utility model are to be based on: when the soil body is deformed, soil surveys angle
The stressed plate for measuring device applies pressure, is brought into contact with end and resistance ring generates displacement, and then generate change in electric, generate positive electricity
Signal intensity, which illustrates to generate at placement location, counterclockwise to be deformed, and is generated negative electricity signal intensity and is illustrated that generation is suitable at placement location
Clockwise deformation, to achieve the purpose that measurement deformation.
As shown in Figure 1 to Figure 3, a kind of angle measurement unit: include cylindrical case 1, inner core 2, resistance ring 3, conducting wire 4,
Spring 5, cylindrical case 1 is made of upper outer cylinder cylindrical body 12 and lower 11 two parts of outer cylinder semicylinder, and wire guide 13 is distributed with
And inner hole 14,12 part of upper cylindrical body of outer cylinder 1 is longer with respect to lower half cylindrical body 11, the upper cylindrical body 12 of outer cylinder 1 and outer cylinder 1
Lower half cylindrical body 11 possesses 4 symmetrical screw holes 15 respectively, by the lower semicircular cylinder 11 and Upper cylindrical of outer cylinder 1
The docking of body 12 simultaneously tightens screw across screw hole 15, is assembled into cylindrical case 1.
Inner core 2 includes interior bar 21, contact jaw 22 and stressed plate 23, and contact jaw 22 and stressed plate 23 are bonded in interior bar 21 respectively
Both ends form inner core 2.
Resistance ring 3 be semi-annular shape, resistance ring 3 and contact jaw 22 by pure resistance system at.Spring 5 is helical form, can be suitable
Hour hands and counterclockwise deformation.The upper cylinder 12 of one end and outer cylinder 1 by interior bar 21 with contact jaw 22 has wire guide 13
Side is placed in the same direction in inner hole 14, and spring 5 is mounted on interior bar 21 close to 23 end of driver plate, and be bonded in interior bar 21,
Resistance ring 3 is bonded in the lower semicircular cylinder 11 of outer cylinder 1 close to the inside of one end of wire guide 13, then by the top of outer cylinder 1
Cylindrical body 12 is aligned with 11 screw hole 15 of upper cylinder of outer cylinder 1, is screwed down, and conducting wire 4 connects contact jaw 22 and resistance
One end of ring 3 forms angle measurement unit.
A kind of soil body strain regime test method, comprising the following steps:
1) set angle measuring device: stressed plate side end face is adjusted to and is hung down with outer cylinder lower end semi-cylindrical axial plane
Directly, device is connect with acquisition device, acquisition device and computer and opens working condition；
2) corresponding relationship of stressed plate rotational angle and test data is established according to step 1): carrying out device mark before testing
Fixed, manual level stirs stressed plate, and stressed plate and the radial of outer cylinder lower end semi-cylindrical generate angle at this time, to change stress
Plate angle degree, resistance value is measured in the mobile position for driving interior bar rotation and changing on contact jaw and resistance ring after stressed plate stress, electricity
Signal according to resistance value size and change, record value of electrical signals, thus obtain pair of stressed plate rotational angle and test data
It should be related to k；Repeat aforesaid operations, successively stressed plate is stirred clockwise A1, A2, A3, A4 ... multiple angles are generated corresponding
Multiple a negative electricity signal mus 1, μ 2, μ 3, μ 4 ... successively stressed plate is stirred counterclockwise again B1, B2, B3, B3 ... multiple angles,
Corresponding will generate multiple electrical signals η 1, η 2, η 3, η 4 ... angle value is established into calibration scale with the corresponding data measured；
The corresponding relationship calibration scale of stressed plate rotational angle and test data:
| Angle change value A | Value of electrical signals μ | Angle change value B | Value of electrical signals η |
| A1 | μ1 | B1 | η1 |
| A2 | μ2 | B2 | η2 |
| A3 | μ3 | B3 | η3 |
| A4 | μ4 | B4 | η4 |
| An | μn | Bn | Ηn |
3) angle measurement unit angle is chosen according to the coordinate system that step 1) is established to be put into the soil body to be tested,
Carefully test device is covered with soil and is gently compacted；Conducting wire is connected with data acquisition device, and is adjusted in the operation interface
Zero.
When being placed in the soil body to be tested, keeps stressed plate and 1 face angle of outer cylinder is 90 °, i.e. plumbness, and before placement
It should establish suitable coordinate system according to test request, and proper angle is chosen according to the coordinate system of foundation and places test device and with native
It carefully covers test device and is gently compacted, be that device places basic demand with this.
5) measure: when the soil body is deformed, soil applies pressure to the stressed plate of angle measurement unit, makes the contact of interior bar
End generates displacement with resistance ring, and then generates change in electric, and when stressed plate stress rotates clockwise, contact jaw is relatively electric
Balk ring rotates counterclockwise, and device resistance value becomes larger, and electric signal becomes smaller, and computer end shows that numerical value is negative value；When stressed plate stress
It rotates counterclockwise, contact jaw relative resistance ring rotates clockwise, and device resistance value becomes smaller, and electric signal becomes larger, computer end
Display numerical value is positive value；
6) it calculates measurement result: according to the data of external static strain data acquisition device acquisition, that is, corresponding to calibration scale
Angle change value is found out, concrete principle formula is as follows.
In formula, 0 °≤n≤180 ° in the utility model；R is 1cm；R is resistance loop resistance, and resistance value is 120 Ω -350
Ω；R1Resistance value when being relatively rotated for contact jaw and resistance ring；IATo pass through the electric current of the device；Voltage U is that external static state is answered
Become data acquisition device to provide；It can be converted into electric signal by external static strain data acquisition device, and according to test angles
It is converted into test data in degree=electric signal * calibration coefficient Formula Input Technology computer software,
According to test gained angle change value, following formula is substituted into, the shearing strain value of the deformation soil body can be calculated:
In formula, γ is shearing strain value, and ω is semicylinder plane included angle acute angle below stress plate face and cylindrical shell body
Value, 90 degree of present apparatus value, i.e. pi/2, Δ ω are the soil body angular distortion value measured.
The effect of the utility model is that the angle measurement unit method is easy, the beneficial effect is that angle measurement unit is in quilt
It tests in deformation process, the deformation soil body can push stressed plate to rotate, and then change the relative position of contact jaw and resistance ring, from
And change electric signal, to measure test body deformation angle, there is important reality for evaluation engineering safety and theoretical research
Meaning.The invention improves 53%~70% compared with the measurement effect of common survey device, significant increase deformation test effect.
The utility model is characterized in that:
1. stressed plate and soil body contact area are larger, device can be made to generate real-time response to soil deformation；
2. test device can generate both positive and negative current signal, according to test data according to the difference in soil deformation direction
Deformation direction can be judged；
3. angle measurement unit is tested for theoretical research and engineering safety, have important practical significance.
Claims (6)
1. a kind of angle measurement unit, it is characterized in that: include cylindrical shell body, inner core, interior bar, resistance ring, conducting wire, spring and
Stressed plate, the cylindrical shell body lower section is semicylinder, top is cylindrical outer body；The inner core is placed in outside cylinder
In vivo；The interior bar is placed in inner core and concentric with outer housing, stretched out at the top of interior bar in cover outside core cap and with the inner core
Resistance ring contact connects, and interior bar bottom passes through inner core bottom and extends to outer cylinder and be connected with stressed plate；The spring is located at inner core bottom
On interior bar on；The resistance ring connect with measure traverse line and draws through outer housing top cover and fills with the acquisition of external static strain data
It sets and is connected.
2. a kind of angle measurement unit according to claim 1, it is characterized in that: the outer housing and inner core in interior core cap and
Cylinder is fixed respectively.
3. a kind of angle measurement unit according to claim 1, it is characterized in that: the resistance ring be it is semi-circular, radius is
1cm, resistance value range are the variable resistance of 120 Ω -350 Ω.
4. a kind of angle measurement unit according to claim 1, it is characterized in that: the spring is plane scroll spring.
5. a kind of angle measurement unit according to claim 1, it is characterized in that: the static strain data acquisition device is adopted
With DH3816 static state vasculum.
6. a kind of angle measurement unit according to claim 1, it is characterized in that: the interior bar bottom and stressed plate are through heating
Glue bond connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821787926.XU CN208887564U (en) | 2018-11-01 | 2018-11-01 | A kind of angle measurement unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821787926.XU CN208887564U (en) | 2018-11-01 | 2018-11-01 | A kind of angle measurement unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208887564U true CN208887564U (en) | 2019-05-21 |
Family
ID=66517691
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821787926.XU Expired - Fee Related CN208887564U (en) | 2018-11-01 | 2018-11-01 | A kind of angle measurement unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269400A (en) * | 2018-11-01 | 2019-01-25 | 天津城建大学 | A kind of angle measurement unit and its soil body strain regime test method |
-
2018
- 2018-11-01 CN CN201821787926.XU patent/CN208887564U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269400A (en) * | 2018-11-01 | 2019-01-25 | 天津城建大学 | A kind of angle measurement unit and its soil body strain regime test method |
| CN109269400B (en) * | 2018-11-01 | 2024-04-09 | 天津城建大学 | Angle measuring device and soil strain state testing method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20190521 Termination date: 20211101 |