CN106052616A - NPR anchor cable internal diameter real-time measuring method - Google Patents
NPR anchor cable internal diameter real-time measuring method Download PDFInfo
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- CN106052616A CN106052616A CN201610338520.2A CN201610338520A CN106052616A CN 106052616 A CN106052616 A CN 106052616A CN 201610338520 A CN201610338520 A CN 201610338520A CN 106052616 A CN106052616 A CN 106052616A
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- Prior art keywords
- sleeve
- linear displacement
- anchor cable
- displacement transducer
- internal diameter
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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
- G01B21/10—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 diameters
- G01B21/14—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 diameters internal diameters
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Piles And Underground Anchors (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides an NPR anchor cable internal diameter real-time measuring method used for measuring the internal diameter change of a sleeve of an NPR anchor cable. The NPR anchor cable comprises the sleeve and a constant resistance body arranged in the sleeve. The method comprises the following steps of: arranging a support member in the sleeve, and uniformly fixing a plurality of linear displacement sensors with probes on the peripheral outer side wall of the support member; setting the probes of the linear displacement sensors to be abutted against the inner wall of the sleeve, and setting that the probes of the linear displacement sensors to move radially along the sleeve; resetting the linear displacement sensors, and setting the reading of the linear displacement sensors to be zero; driving the constant resistance body to move in the sleeve, synchronously driving the support member to move along the axis of the sleeve, and enabling the plurality of linear displacement sensors to move in the sleeve; and reading the measuring data of the linear displacement sensors. According to the invention, the internal diameter of the sleeve is measured in real time, and reliable data is provided for scientific research.
Description
Technical field
The present invention relates to anchor cable Study on mechanism technical field, particularly to a kind of NPR anchor cable internal diameter side of measurement in real time
Method.
Background technology
In Geotechnical Engineering field, anchor cable is one of capital equipment material solving destabilization problems, but heavily stressed, the strongest
Under engineering under Du, general anchor cable is the most not competent, but also can produce secondary injury, to this end, industry develops intensity more
Height, practicality NPR more preferable, low-cost (negative Poisson Ration, Negative poisson's ratio) anchor cable.NPR anchor cable
Anchoring section include sleeve (or referred to as sleeve pipe), be positioned at sleeve can be at the constant-resistance body of sleeve movement, this anchor cable
For the large deformation anchor cable of a kind of energy-absorbing, its appearance solves the knotty problem in a lot of Geotechnical Engineering, but for therein interior
Also rest on surface at study mechanism, for in-depth study, need to measure its metamorphosis under its duty, by
This studies its inherent mechanism.
During further investigation anchor cable working mechanism, there is a very important deformation state, it is simply that stretched
Cheng Zhong, NPR anchor cable sleeve is while expanded radially, and the wall thickness of sleeve also can be varied from, and anchor cable sleeve is about 1-5 rice,
How can be out a problem the most insoluble by wall thickness measuring therein in so long distance.
Summary of the invention
It is an object of the invention to provide a kind of NPR anchor cable internal diameter method for real-time measurement, to measure NPR anchor cable in real time
Sleeve diameter.
To achieve these goals, the present invention provides following technical scheme:
A kind of NPR anchor cable internal diameter method for real-time measurement, for measuring the sleeve diameter change of NPR anchor cable, NPR anchor cable includes
Sleeve and the constant-resistance body being positioned at sleeve inner, it comprises the following steps: arrange a support member in sleeve inner, at support member
The most fixing multiple linear displacement transducers with probe on periphery wall；The probe arranging linear displacement transducer is supported
The inwall of sleeve, arranges probe the moving radially along sleeve of linear displacement transducer；Reset linear displacement transducer, makes straight
Linear movement pick-up reading is zero；Drive constant-resistance body to move in sleeve inner, and synchronize the axis driving support member along sleeve
Mobile so that multiple linear displacement transducers move in sleeve inner；Read the measurement data of linear displacement transducer.
Preferably, when linear displacement transducer is fixed on support member, specifically include following steps: at support member with straight
Between linear movement pick-up, setting is corresponding with linear displacement transducer supports rod member and fixed cover；Wherein, rod member is supported uniform
Ground is fixed on the periphery wall of support member；The outward appearance of fixed cover is direct rod shape, and corresponding described support rod member is fixed in one end
On, the other end is hollow cylinder；Linear displacement transducer is fixed in the hollow cylinder of fixed cover.
Preferably, when the inwall that the probe of linear displacement transducer supports sleeve is set, further comprising the steps of: by straight line
The probe tip face of displacement transducer is fixed on inside a sliding panel, and the edge of sliding panel bends inwards, and the outside of sliding panel is supported
The inwall of top cover cylinder.
Preferably, being bolted between described support rod member and described fixed cover, described linear displacement transducer leads to
Cross and be bolted in hollow cylinder.
Preferably, before reset linear displacement transducer, further comprising the steps of: on support member, to connect many tractions
Rope, is also connected pull rope with the constant-resistance body in sleeve；When constant-resistance body is subjected to displacement in sleeve inner, pull rope drives multiple
Linear displacement transducer moves in sleeve inner.
Analyzing and understand, the present invention makes linear displacement transducer automatically be supported in NPR anchor cable sleeve, stretched at constant-resistance body
Cheng Zhong, linear displacement transducer moves, so that linear displacement transducer is real-time, accurately measure NPR anchor cable sleeve diameter,
Reliable data are provided for scientific research.
Accompanying drawing explanation
The structural representation of the measurement system that Fig. 1 provides for the embodiment of the present invention；
The bail of measurement system that Fig. 2 provides for the embodiment of the present invention, pull rope, the attachment structure signal of support member
Figure；
The structural representation of the sliding panel of the measurement system that Fig. 3 provides for the embodiment of the present invention.
Detailed description of the invention
With detailed description of the invention, the present invention is described in further details below in conjunction with the accompanying drawings.
Owing to the structure of NPR anchor cable and principle are different from conventional anchor cable: it include sleeve and be positioned at sleeve constant-resistance body,
Constant-resistance body can be subjected to displacement in sleeve, not only can produce substantial amounts of heat, and overall structure also can be sent out in this displacement process
Changing, the sleeve of especially NPR anchor cable can occur expanded radially.If the external diameter only understanding sleeve expands, then it is not enough to solve
Release the mechanism of intumescence of anchor cable, in addition it is also necessary to know internal diameter and the wall thickness change in stretching experiment of anchor cable sleeve, to this end, the present invention
The technology such as comprehensive mechanical structure, measurement and signals collecting, it is provided that a kind of NPR anchor cable internal diameter method for real-time measurement, to be used in rock
In the anchor cable experiment of geotechnique's journey.
For the efficient implementation present invention, can be before reality be measured, assembling measurement system as shown in Figure 1, if the present invention
Each parts all the sleeve inner of NPR anchor cable (not shown) complete assembling, technique is complex, inefficiency.
As it is shown in figure 1, NPR anchor cable (being called for short anchor cable time hereafter) the internal diameter real-time measurement system that the present invention provides mainly is used
In measuring the internal diameter change of NPR anchor cable sleeve (being called for short sleeve time hereafter), comprising: support member 1, support rod member 2, fixing
Set, linear displacement transducer 6, sliding panel 5, bail 9, pull rope 10, and linear displacement transducer 6 have probe 61.
Support member 1 is arranged on the sleeve inner of NPR anchor cable, it is possible to the axis along NPR anchor cable sleeve moves.Main Function
Being to provide and support for supporting rod member 2, it can be tabular, ring-type, it is preferable that such as Fig. 1, support member 1 in the form of a ring, structure and work
Skill is the most relatively simple.
Support the quantity such as rod member 2, fixed cover, linear displacement transducer 6, sliding panel 5 identical, be multiple, and one a pair
Should, such as these four parts shown in Fig. 1 are six, are spaced 60 ° between adjacent support rod member.Certainly, these four parts are more
Many, more can gather more data, more can measure the sleeve diameter change of NPR anchor cable more accurately.
Specifically, six support rod member 2 and are fixed on equably on the periphery wall of support member 1, and support rod member 2
The axis of axis extended line and NPR anchor cable sleeve intersects vertically.That is, support member 1 is circular, the axis supporting rod member 2 prolongs
The axis of long line and support member 1 intersects vertically, and in other words, supports the rod member 2 radial distribution along support member 1.Preferably, support
Rod member 2 is cylindrical structure, it is simple to one end of fixed cover is inserted.
Fixed cover includes two parts: solid hopkinson bar 3, hollow cylinder 4, one end of solid hopkinson bar 3 and one end of hollow cylinder 4 connect, and make
The overall appearance obtaining fixed cover is direct rod shape.The other end of solid hopkinson bar 3 inserts and supports in rod member 2, and supports the sidewall of rod member 2
It is provided with screw, after the first bolt 8 passes this screw, will support tightly on solid hopkinson bar 3 so that solid hopkinson bar 3 fixing connection props up
Strut member 2.The other end of hollow cylinder 4 is then open architecture, it is simple to linear displacement transducer 6 is put into wherein.Further, hollow cylinder 4
Sidewall is provided with screw, and the second bolt 7 is supported on linear displacement transducer 6 through this screw, thus straight-line displacement is sensed
Device 6 is fixed in hollow cylinder 4.
After linear displacement transducer 6 is fixed on hollow cylinder 4, it is outside that its probe 61 stretches out hollow cylinder 4, and the stretching of probe 4
Contracting direction is identical with the axis supporting rod member 2, make whereby to pop one's head in 4 mobile route and sleeve radially consistent.Straight-line displacement
The data that sensor 6 gathers can be with real-time Transmission to outside, it is also possible to is stored in its memorizer.
Sliding panel 5 slides on the inwall of NPR anchor cable sleeve, and the probe 61 of linear displacement transducer 6 is fixed on sliding panel 5
Inner side, the edge of sliding panel 5 bends inwards, and sleeve lining is supported in outside, such as Fig. 3, whereby, can avoid the concavo-convex of sleeve lining
Uneven the smooth of obstruction sliding panel 5 moves.
As in figure 2 it is shown, bail 9 hangs on the constant-resistance body in NPR anchor cable sleeve.Why it is ring-type, it is simple to hook, its
His structure can also, may be not as ring-type simple, convenient.Pull rope 10 is many, and one end is connected to bail 9, and the other end is equal
It is connected to the multiple positions on support member 1 front end face, to drive support member 1 to move evenly evenly.That is, in sleeve, when
When constant-resistance body is moved, i.e. driving bail 9 to move, bail 9 drives support member 1 and parts thereon to move again.
Dismountable connection is realized by the first bolt 8 between rod member 2 and solid hopkinson bar 3 it is further to note that support,
It is able to be convenient for changing fixed cover.When measuring the internal diameter of different size sleeve, different consolidating can be changed as required
Fixed set.Similarly, realize removably connecting by the second bolt 7 between linear displacement transducer 6 and hollow cylinder 4, be in order to more
Enough it is convenient for changing linear displacement transducer 6.
When applying the present embodiment that sleeve diameter is measured, it is referred to following steps:
The fixed cover (solid hopkinson bar 3, the length difference of hollow cylinder 4) of appropriate length is selected according to compliant sleeve, then will be real
Core bar 3 inserts and supports in rod member 2, locks with the first bolt 8；Again linear displacement transducer 6 is put in hollow cylinder 4, with second
Bolt 7 is locked.Note, it should be ensured that probe 61 is along the moving radially of sleeve, flexible.
Bail 9 is hung on the constant-resistance body in sleeve, then the entirety such as 1, six linear displacement transducers 6 of support member are put
Enter in sleeve.Sliding panel 5 is close to sleeve lining.
Adjust linear displacement transducer 6 so that it is reset, make zero.
The constant-resistance body driving NPR anchor cable moves in sleeve, and bail 9 stretches pull rope 10, and pull rope 10 pulls support
Part 1 moves.
Now, because rubbing and not only producing substantial amounts of heat between constant-resistance body and the sleeve of NPR anchor cable, and the wall thickness of sleeve
Also change.Probe 61 can occur slightly to stretch out (wall thickness change is little after all), linear displacement transducer 6 perception probe 61
Displacement, is converted to the different electrical signals corresponding with 61 displacements of popping one's head in, and records in memorizer therein or output is to outward
Portion.
Analyze the signal of linear displacement transducer 6 output, the distance that probe 61 moves can be learnt, thus calculate sleeve
Internal diameter becomes big how many.Such as during original state, sleeve diameter is 200mm, and a probe 61 is displaced outwardly 2mm in certain time period,
Then showing within the time period, the internal diameter of one section of sleeve that constant-resistance body slips over increases 2mm；In another time period, this probe may
Being displaced outwardly 3mm, then show within the time period, the internal diameter of another section of sleeve that constant-resistance body slips over increases 3mm.Note, sleeve
The change of internal diameter is not necessarily uniform, such as one probe displacement 2mm, in the same time period, and the displacement of another probe
It is probably 2.5mm.
Owing to linear displacement transducer 6 is multiple, therefore, it can analyze the internal diameter change of sleeve various location.
Moving secondly as linear displacement transducer 6 follows bail 9 always, the most same linear displacement transducer 6 can
With the length direction along sleeve, measure the internal diameter data of diverse location.
In sum, the present invention can record the change of NPR anchor cable internal diameter in real time, accurately, thus for scientifically to study
The working mechanism of NPR anchor cable and follow-up improvement, it is provided that data supporting.
As known by the technical knowledge, the present invention can be by other essence without departing from its spirit or the embodiment party of essential feature
Case realizes.Therefore, embodiment disclosed above, for each side, all it is merely illustrative, is not only.Institute
The change within the scope of the present invention or within being equal to the scope of the present invention is had all to be included in the invention.
Claims (5)
1. a NPR anchor cable internal diameter method for real-time measurement, for measuring the sleeve diameter change of NPR anchor cable, NPR anchor cable includes set
Cylinder and the constant-resistance body being positioned at sleeve inner, it is characterised in that comprise the following steps:
One support member is set in sleeve inner, the most fixing multiple straight lines with probe on the periphery wall of support member
Displacement transducer；
The probe arranging linear displacement transducer supports the inwall of sleeve, arranges the probe of linear displacement transducer along sleeve
Move radially；
Reset linear displacement transducer, making linear displacement transducer reading is zero；
Drive constant-resistance body to move in sleeve inner, and synchronize to drive support member to move along the axis of sleeve so that multiple straight lines
Displacement transducer moves in sleeve inner；
Read the measurement data of linear displacement transducer.
NPR anchor cable internal diameter method for real-time measurement the most according to claim 1, it is characterised in that straight-line displacement is being sensed
When device is fixed on support member, specifically include following steps:
Between support member and linear displacement transducer, setting is corresponding with linear displacement transducer supports rod member and fixed cover；Its
In, support rod member and be fixed on equably on the periphery wall of support member；The outward appearance of fixed cover is direct rod shape, and phase is fixed in one end
Answering on described support rod member, the other end is hollow cylinder；
Linear displacement transducer is fixed in the hollow cylinder of fixed cover.
NPR anchor cable internal diameter method for real-time measurement the most according to claim 2, it is characterised in that straight-line displacement sensing is set
When the probe of device supports the inwall of sleeve, further comprising the steps of:
The probe tip face of linear displacement transducer is fixed on inside a sliding panel, and the edge of sliding panel bends inwards, slide
The inwall of sleeve is supported in the outside of plate.
NPR anchor cable internal diameter method for real-time measurement the most according to claim 2, it is characterised in that described support rod member and institute
Stating and be bolted between fixed cover, described linear displacement transducer is bolted in hollow cylinder.
NPR anchor cable internal diameter method for real-time measurement the most according to claim 1, it is characterised in that reset straight-line displacement senses
Before device, further comprising the steps of:
Support member connects many pull ropes, also pull rope is connected with the constant-resistance body in sleeve；
When constant-resistance body is subjected to displacement in sleeve inner, pull rope drives multiple linear displacement transducers to move in sleeve inner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610338520.2A CN106052616B (en) | 2016-05-23 | 2016-05-23 | NPR anchor cable internal diameter method for real-time measurement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610338520.2A CN106052616B (en) | 2016-05-23 | 2016-05-23 | NPR anchor cable internal diameter method for real-time measurement |
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| Publication Number | Publication Date |
|---|---|
| CN106052616A true CN106052616A (en) | 2016-10-26 |
| CN106052616B CN106052616B (en) | 2018-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610338520.2A Active CN106052616B (en) | 2016-05-23 | 2016-05-23 | NPR anchor cable internal diameter method for real-time measurement |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802354A (en) * | 2017-01-24 | 2017-06-06 | 中国矿业大学(北京) | NPR anchor cables constant-resistance running body speed and deviation meter |
| CN109773326A (en) * | 2019-01-15 | 2019-05-21 | 沈阳航空航天大学 | The mixing yoghurt device and method of cylindrical structure inner wall for Diameter Gradual Change |
| CN113701693A (en) * | 2021-10-20 | 2021-11-26 | 机械工业勘察设计研究院有限公司 | Multi-point aperture displacement measuring device and measuring method |
-
2016
- 2016-05-23 CN CN201610338520.2A patent/CN106052616B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106802354A (en) * | 2017-01-24 | 2017-06-06 | 中国矿业大学(北京) | NPR anchor cables constant-resistance running body speed and deviation meter |
| CN109773326A (en) * | 2019-01-15 | 2019-05-21 | 沈阳航空航天大学 | The mixing yoghurt device and method of cylindrical structure inner wall for Diameter Gradual Change |
| CN113701693A (en) * | 2021-10-20 | 2021-11-26 | 机械工业勘察设计研究院有限公司 | Multi-point aperture displacement measuring device and measuring method |
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| Publication number | Publication date |
|---|---|
| CN106052616B (en) | 2018-08-17 |
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