CN106643408B - A kind of horizontal displacement measuring device - Google Patents
A kind of horizontal displacement measuring device Download PDFInfo
- Publication number
- CN106643408B CN106643408B CN201611060490.XA CN201611060490A CN106643408B CN 106643408 B CN106643408 B CN 106643408B CN 201611060490 A CN201611060490 A CN 201611060490A CN 106643408 B CN106643408 B CN 106643408B
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- pulley
- pull spring
- displacement
- backboard
- fixture
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
Abstract
The present invention provides a kind of horizontal displacement measuring devices, comprising: pull spring, horizontal measurement wheel carrier, displacement sensor and weight；One end of pull spring is fixedly connected with the first fixture, and the other end is connect with weight；Horizontal measurement wheel carrier includes: backboard, first pulley, second pulley and bracket；Backboard is fixed on the second fixture；First pulley and second pulley are separately positioned on the upper and lower part of backboard；The inward flange of first pulley and the second pulley is abutted with pull spring；The inward flange of first pulley and the inward flange of second pulley are on vertical line of the same perpendicular to ground；The middle part of backboard is arranged in bracket, is used for fixed displacement sensor；The lower end of displacement sensor is provided with line card；Line card is fixedly connected with pull spring.The significantly swing that weight can effectively and be quickly limited using the present invention improves the precision of measurement, reduces the friction between pulley and pull spring, the phenomenon realized effective transmitting of displacement, while pull spring can also be prevented stuck by device.
Description
Technical field
The present invention relates to the structure monitoring technical fields more particularly to a kind of horizontal displacement measuring device in civil engineering.
Background technique
It measures displacement (deformation) using pull spring method to have obtained relatively broad application in civil engineering surveying, but in reality
In use, using specific form, details different.The principle of this method are as follows: measured point is displaced, is by thermal expansion
The stable pull spring of number is transmitted to measurement end, and measurement end is all kinds of measuring equipments, then obtains shift value by measurement end measurement.
For the measurement for realizing the horizontal diameter variation to heavy construction structure (for example, npp safety shell structure), make
When with the above-mentioned measurement displacement using pull spring method, it is typically necessary increase displacement transmitting bracket.In practical applications, used position
The form for moving transmitting bracket is varied.But the test error of many concrete methods of realizing is more than 0.1mm in the prior art,
Its transmission effect is not satisfactory.
Summary of the invention
In view of this, the present invention provides a kind of horizontal displacement measuring device, so as to effectively quickly limit weight
The significantly swing of hammer improves the precision of measurement, reduces the friction between pulley and pull spring, realizes effective transmitting of displacement,
The phenomenon that pull spring can also be prevented stuck by device simultaneously.
Technical solution of the present invention is specifically achieved in that
A kind of horizontal displacement measuring device, comprising: pull spring, horizontal measurement wheel carrier, displacement sensor and weight；
One end of the pull spring is fixedly connected with the first fixture, and the other end of the pull spring is connect with the weight；
The horizontal measurement wheel carrier includes: backboard, first pulley, second pulley and bracket；
The backboard is fixed on the second fixture；
The first pulley and the second pulley are separately positioned on the upper and lower part of the backboard；
The inward flange of the first pulley and the second pulley is abutted with the pull spring；
The inward flange of the inward flange of the first pulley and the second pulley is in same perpendicular to the vertical line on ground
On；
The middle part of the backboard is arranged in the bracket, the displacement sensors for fixing；
The lower end of institute's displacement sensors is provided with line card；The line card is fixedly connected with the pull spring.
Preferably, the horizontal displacement measuring device may further comprise: setting the pull spring and the first fixture it
Between displacement calibrating device；
One end of the displacement calibrating device is fixedly connected with the first fixture, the other end of the displacement calibrating device with it is described
One end of pull spring connects.
It is connect preferably, the other end of the displacement calibrating device passes through annular equipment with one end of the pull spring.
Preferably, being additionally provided with third pulley on the backboard；
The third pulley is arranged between the first pulley and second pulley, and the outer edge of the third pulley with
The pull spring abuts.
Preferably, the distance between the third pulley and the second pulley are less than the third pulley and described first
The distance between pulley.
Preferably, the junction of the first pulley, second pulley and third pulley and the backboard is additionally provided with adjusting
Clamp device；
The vertical range for adjusting clamp device and being used to adjust each pulley Yu the backboard, and each pulley is fixed
On the backboard.
Preferably, institute's displacement sensors are DC linear displacement sensor.
Preferably, first fixture and the second fixture are in npp safety shell positioned at the both ends of horizontal diameter
Inner wall.
Preferably, the displacement calibrating device and horizontal measurement wheel carrier are respectively welded at first fixture by weldment
On the second fixture.
Preferably, the pull spring is invar wire.
As seen from the above technical solution, in horizontal displacement measuring device of the invention, due to being provided with horizontal measurement wheel
Frame, and first pulley and second pulley are at least provided on horizontal measurement wheel carrier, and pull spring respectively with first pulley and the
The inward flanges of two pulleys abuts, and the inward flange of first pulley and the inward flange of second pulley in same hanging down perpendicular to ground
On straight line, therefore the horizontal displacement of pull spring can be changed into vertical displacement amount by first pulley, and same perpendicular to
The inward flange of first pulley and second pulley on the vertical line on ground can effectively and quickly limit the significantly pendulum of weight
It is dynamic, so as to improve the precision of measurement；Moreover, because each pulley is rotary, therefore cunning can also be greatly reduced
Friction between wheel and pull spring, the phenomenon realized effective transmitting of displacement, while pull spring can also be prevented stuck by device.
Further, since a third pulley can also be arranged between the first pulley and second pulley, and
So that the outer edge of the third pulley is abutted with the pull spring so that above-mentioned horizontal displacement measuring device be provided with two it is auxiliary
Help wheel (i.e. second pulley and third pulley).It, can be more since pull spring have passed through the not ipsilateral of the two auxiliary wheels
Efficiently control the excessive shaking of weight.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the horizontal displacement measuring device in one embodiment of the present of invention.
Fig. 2 is the structural schematic diagram of the horizontal displacement measuring device in another embodiment of the invention.
Fig. 3 is the side view of the horizontal measurement wheel carrier in the embodiment of the present invention.
Fig. 4 is the Section A-A schematic diagram of Fig. 3.
Fig. 5 is in the embodiment of the present invention using the schematic diagram of multiple horizontal displacement measuring devices measurement horizontal displacement.
Specific embodiment
For technical solution of the present invention and advantage is more clearly understood, below in conjunction with drawings and the specific embodiments, to this
Invention is described in further detail.
Fig. 1 is the structural schematic diagram of the horizontal displacement measuring device in the embodiment of the present invention.As shown in Figure 1, the present invention is real
Applying the horizontal displacement measuring device in example includes: pull spring 11, horizontal measurement wheel carrier 12, DC linear displacement sensor (DCLVDT)
13 and weight 14；
One end of the pull spring 11 is fixedly connected with the first fixture 15, the other end of the pull spring 11 and the weight 14
Connection；
The horizontal measurement wheel carrier 12 includes: backboard 20, first pulley 21, second pulley 22 and bracket 23；
The backboard 20 is fixed on the second fixture 16；
The first pulley 21 and the second pulley 22 are separately positioned on the upper and lower part of the backboard 20；
The inward flange of the first pulley 21 and the second pulley 22 is abutted with the pull spring 11；
The inward flange of the inward flange of the first pulley 21 and the second pulley 22 hanging down perpendicular to ground in same
On straight line；
The middle part of the backboard 20 is arranged in the bracket 23, for fixing the DCLVDT 13；
The lower end of the DCLVDT 13 is provided with line card 31；The line card 31 is fixedly connected with the pull spring 11.
In addition, preferably, Fig. 2 is the structural representation of the horizontal displacement measuring device in another embodiment of the invention
Figure, as shown in Fig. 2, in a specific embodiment of the present invention, the horizontal displacement measuring device can further include: setting
Displacement calibrating device 17 between the pull spring 11 and the first fixture 15；
One end of the displacement calibrating device 17 is fixedly connected with the first fixture 15, the other end of the displacement calibrating device 17
It is connect with one end of the pull spring 11.
Preferably, in a specific embodiment of the present invention, the other end of the displacement calibrating device 17 can also pass through annular
Equipment 18 is connect with one end of the pull spring 11.
According to the structure of above-mentioned horizontal displacement measuring device it is found that in the inventive solutions, measuring if necessary
The horizontal displacement of heavy construction structure changes (for example, the horizontal diameter in npp safety shell structure shell changes), then can incite somebody to action
First fixture and the second fixture are separately positioned on the level to geodesic structure (i.e. in the containment of npp safety shell structure)
Both ends of diameter, and above-mentioned displacement calibrating device is fixed on the first fixture, then by the backboard of the horizontal measurement wheel carrier
It is fixed on the second fixture；One end of pull spring is connect with displacement calibrating device, and the other end is connect with weight.In the gravity of the weight
Under effect, pull spring will be straightened, and the pull spring rides in the first pulley and second pulley of horizontal measurement wheel carrier, and respectively with
One pulley and the inward flange of second pulley abut.
Therefore, when the horizontal displacement to be measured of heavy construction structure changes (for example, in above-mentioned npp safety shell
When portion fills, is depressured, containment stress deformation, the horizontal diameter in containment will generate variation), horizontal displacement will occur for pull spring,
Pull spring at this time will drive the on horizontal measurement wheel carrier under the action of the self gravity of weight (for example, weight be 10kg)
One pulley and second pulley correspondingly rotate, and convert pull spring in the vertical position of vertical direction for the horizontal displacement of pull spring
It moves.Since the line card of the lower end of DCLVDT is fixedly connected with the pull spring, pull spring can drive line card under weight effect
To drive the measuring rod of DCLVDT to generate displacement, so that the displacement of the pull spring can pass through DCLVDT displacement sensor
Measurement obtains.
In the inventive solutions, since pull spring is abutted with the inward flange of first pulley and second pulley respectively, and
The inward flange of first pulley and the inward flange of second pulley are on vertical line of the same perpendicular to ground, therefore first pulley can
First the horizontal displacement of pull spring is changed into vertical displacement amount, and on vertical line of the same perpendicular to ground is sliding
Wheel and the inward flange of second pulley can effectively limit the excessive swing of weight, because the free state hammered into shape without counterweight was done
More limitations；Moreover, because each pulley is rotary, therefore can also greatly reduce the friction between pulley and pull spring,
Not the phenomenon that not interfering with effective transmitting of displacement, but also being stuck to avoid pull spring.
In addition, in the inventive solutions, can also be further improved.For example, preferably, such as Fig. 2 institute
Show, in a specific embodiment of the present invention, a third can also be set between the first pulley 21 and second pulley 22
Pulley 25 is additionally provided with third pulley 25 on that is, described backboard 20；The third pulley 25 is arranged in 21 He of first pulley
Between second pulley 22, and the outer edge of the third pulley 25 is abutted with the pull spring.Therefore, the third pulley 25 is outer
Edge and the first pulley 21, second pulley 22 inward flange also on vertical line of the same perpendicular to ground.
Further, preferably, in a specific embodiment of the present invention, the third pulley 25 and the second pulley
The distance between 22 are less than the distance between the third pulley 25 and described first pulley 21.
By the way that above-mentioned third pulley is arranged, above-mentioned horizontal displacement measuring device can be made to be provided with two auxiliary wheels
(i.e. second pulley and third pulley).It, can be more effective since pull spring have passed through the not ipsilateral of the two auxiliary wheels
The excessive shaking of ground control weight (effect when distance of two auxiliary wheels is closer is more preferable).
In technical solution of the present invention, the front-rear position of three pulleys can be adjusted, is made according to the demand of practical application
The edge for obtaining each pulley achievees the effect that touch pull spring.
For example, preferably, in a specific embodiment of the present invention, the first pulley, second pulley and third pulley are (such as
Fruit is provided with third pulley) it is additionally provided with the junction of the backboard and adjusts clamp device (not shown)；The adjusting
Clamp device is used to adjust the front-rear position of each pulley, that is, adjusts the vertical range of each pulley Yu the backboard, and will be each
A pulley is fixed on the backboard.
Preferably, in a specific embodiment of the present invention, first fixture and the second fixture can be nuclear power plant
Positioned at the inner wall at the both ends of horizontal diameter in containment.
Certainly, in practical application scene, it there may be in npp safety shell in horizontal diameter direction and much construct
Object, so that pull spring is logical without farad.At this point, can also be set as pacifying with any one in the first fixture and the second fixture
The surface of structures in full shell, and the inner wall in containment is set by another fixture, at this point, passing through measurement horizontal position
The variation of shifting similarly can be effectively monitored and be measured to the displacement of the horizontal diameter in npp safety shell.
In addition, preferably, in a specific embodiment of the present invention, the displacement calibrating device and horizontal measurement wheel carrier pass through
Weldment is respectively welded on first fixture and the second fixture.
For example, as shown in Fig. 2, the displacement calibrating device can be welded on first fixture by A type weldment 41,
The horizontal measurement wheel carrier can be welded on second fixture by Type B weldment 42.
Further, preferably, in a specific embodiment of the present invention, the weldment (for example, A, Type B weldment) is equal
It is welded on the Leak-tight liner of the inner wall of containment structure or is bonded on Leak-tight liner by seccotine.
Preferably, in a specific embodiment of the present invention, being also provided with wire hole on the weldment, passing through for using
Horizontal measurement wheel carrier or displacement calibrating device (if being provided with displacement calibrating device) are fixed on institute by the bolt or screw of the wire hole
It states on weldment.
In the inventive solutions, a horizontal displacement measuring device can be used to the water in npp safety shell
The displacement of straight diameter is monitored and measures, and multiple horizontal displacement measuring devices also can be used simultaneously in npp safety shell
The displacement of horizontal diameter be monitored and measure, as shown in Figure 5.
It, can be with the water of monitoring and measurement different directions when being monitored and measuring using multiple horizontal displacement measuring devices
The displacement of straight diameter.
In addition, preferably, in a specific embodiment of the present invention, the pull spring can be invar wire.Preferably, the indium
The diameter of watt silk can be 0.8mm.
Further, preferably, in a specific embodiment of the present invention, the displacement calibrating device can be spiral micrometer
Device is also possible to other displacement calibrating devices.
In addition, preferably, as shown in Figure 3, Figure 4, in a specific embodiment of the present invention, the horizontal measurement wheel carrier 12
Be additionally provided on backboard 20 adjust air level 24, for monitoring the installation verticality of the horizontal measurement wheel carrier, so as to
Guarantee the installation verticality of the horizontal measurement wheel carrier in installation process.
In addition, in the inventive solutions, it can also be according to the whole ruler to geodesic structure (for example, containment structure)
It is very little, the total length of pull spring is set.For example, preferably, in a specific embodiment of the present invention, the length of the pull spring can be set
It is shorter or longer to be equipped with 50m.
In view of the Gravitative Loads of horizontal pull spring (for example, invar wire), the rubbing action of pull spring and horizontal measurement wheel carrier, cunning
Wheel shaft gap and machining accuracy etc. influence measurement error factor, and by live multiple authentication, measurement error can be by before
The 0.080mm (± 25mm range) more taken turns under more side controls is reduced to 0.055mm, so as to effectively improve measurement essence
Degree.
In conclusion in the inventive solutions, due to being provided with horizontal measurement wheel carrier, and in horizontal measurement wheel carrier
On be at least provided with first pulley and second pulley, and pull spring is abutted with the inward flange of first pulley and second pulley respectively,
And the inward flange of first pulley and the inward flange of second pulley be on vertical line of the same perpendicular to ground, therefore first pulley
The horizontal displacement of pull spring can be changed into vertical displacement amount, and first on vertical line of the same perpendicular to ground
Pulley and the inward flange of second pulley can effectively and quickly limit the significantly swing of weight, so as to improve measurement
Precision；Moreover, because each pulley is rotary, therefore can also greatly reduce the friction between pulley and pull spring, it is real
Effective transmitting of existing displacement, while the phenomenon that pull spring can also be prevented stuck by device.
Further, since a third pulley can also be arranged between the first pulley and second pulley, and
So that the outer edge of the third pulley is abutted with the pull spring so that above-mentioned horizontal displacement measuring device be provided with two it is auxiliary
Help wheel (i.e. second pulley and third pulley).It, can be more since pull spring have passed through the not ipsilateral of the two auxiliary wheels
Efficiently control the excessive shaking of weight.
In addition, above-mentioned horizontal displacement measuring device is in confined space or under conditions of avoid external air flow from interfering, it can be with
Realize more accurate displacement measurement, and npp safety shell structure exactly provides this place, therefore, above-mentioned horizontal displacement
Measuring device can be advantageously applied to the monitoring and measurement of the horizontal displacement of npp safety shell structure, efficiently solve shell
The problem of outer vertical line apparatus measurement displacement measuring point deficiency.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (10)
1. a kind of horizontal displacement measuring device characterized by comprising pull spring, horizontal measurement wheel carrier, displacement sensor and again
Hammer；
One end of the pull spring is fixedly connected with the first fixture, and the other end of the pull spring is connect with the weight；
The horizontal measurement wheel carrier includes: backboard, first pulley, second pulley and bracket；
The backboard is fixed on the second fixture；
The first pulley and the second pulley are separately positioned on the upper and lower part of the backboard；
The inward flange of the first pulley and the second pulley is abutted with the pull spring；
The inward flange of the first pulley and the inward flange of the second pulley are on vertical line of the same perpendicular to ground；
The middle part of the backboard is arranged in the bracket, the displacement sensors for fixing；
The lower end of institute's displacement sensors is provided with line card；The line card is fixedly connected with the pull spring.
2. the apparatus according to claim 1, which is characterized in that the horizontal displacement measuring device, which may further comprise:, to be set
Set the displacement calibrating device between the pull spring and the first fixture；
One end of the displacement calibrating device is fixedly connected with the first fixture, the other end and the pull spring of the displacement calibrating device
One end connection.
3. the apparatus of claim 2, it is characterised in that:
The other end of the displacement calibrating device passes through annular equipment and connect with one end of the pull spring.
4. the apparatus according to claim 1, it is characterised in that:
Third pulley is additionally provided on the backboard；
The third pulley is arranged between the first pulley and second pulley, and the outer edge of the third pulley with it is described
Pull spring abuts.
5. device according to claim 4, it is characterised in that:
The distance between the third pulley and the second pulley are less than between the third pulley and the first pulley
Distance.
6. device according to claim 4 or 5, it is characterised in that:
The junction of the first pulley, second pulley and third pulley and the backboard is additionally provided with adjusting clamp device；
The vertical range for adjusting clamp device and being used to adjust each pulley Yu the backboard, and each pulley is fixed on institute
It states on backboard.
7. the apparatus according to claim 1, it is characterised in that:
Institute's displacement sensors are DC linear displacement sensor.
8. the apparatus according to claim 1, it is characterised in that:
First fixture and the second fixture are in npp safety shell positioned at the inner wall at the both ends of horizontal diameter.
9. the apparatus of claim 2, it is characterised in that:
The displacement calibrating device and horizontal measurement wheel carrier are respectively welded at first fixture and second by weldment and fix
On object.
10. the apparatus according to claim 1, it is characterised in that:
The pull spring is invar wire.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611060490.XA CN106643408B (en) | 2016-11-25 | 2016-11-25 | A kind of horizontal displacement measuring device |
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|---|---|---|---|
| CN201611060490.XA CN106643408B (en) | 2016-11-25 | 2016-11-25 | A kind of horizontal displacement measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107462143B (en) * | 2017-06-20 | 2019-07-05 | 昆明理工大学 | A kind of Bidirectional displacement meter |
| CN108253948B (en) * | 2017-12-25 | 2023-12-01 | 中冶建筑研究总院有限公司 | Vertical line loading and unloading device |
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