CN106801381A - A kind of drag-line of conveniently monitoring fracture of wire and preparation method thereof - Google Patents
A kind of drag-line of conveniently monitoring fracture of wire and preparation method thereof Download PDFInfo
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- CN106801381A CN106801381A CN201710128504.5A CN201710128504A CN106801381A CN 106801381 A CN106801381 A CN 106801381A CN 201710128504 A CN201710128504 A CN 201710128504A CN 106801381 A CN106801381 A CN 106801381A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
- G01N29/2437—Piezoelectric probes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0234—Metals, e.g. steel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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Abstract
It is a kind of conveniently monitor fracture of wire drag-line, including cable body, anchorage, anchoring material with anticorrosion structure and by sensor main body, fixing device and signal line group into drag-line fracture of wire monitor sensor and signal monitoring instrument；The sensor main body is made up of coupling rubber, the PVDF piezoelectric film being made up of the stacking of one or more layers PVDF piezoelectric membrane and support soft rubber；PVDF piezoelectric film is pasted onto between coupling rubber and support soft rubber, is formed " sandwich structure "；The electrode of the same polarity of multilayer PVDF piezoelectric thin film layers connects and composes electric parallel connection, and holding wire is drawn respectively in positive and negative polarities；Under working condition, sensor main body is close on the surface of the thread of bridge cable respectively, and fixation is tightened up using fixing device；Holding wire is drawn outside and provides signal source to signal monitoring instrument along thread gap by anchor system.The drag-line can be realized monitoring the thread state of bridge cable on-line, be particular enable to meet the market demand of life-cycle bridge theory.
Description
Technical field
The present invention relates to a kind of bridge cable, prestressed cable field, particularly a kind of drag-line for conveniently monitoring fracture of wire
And its fabrication and installation method.
Background technology
Bridge cable is wrapped in the anti-corrosive apparatus of excellent sealing, and anti-corrosive apparatus can not be opened arbitrarily；So, routinely
Bridge health monitoring is difficult to judge the thread fracture of wire situation of anti-corrosive apparatus inhaul；This generally needs special detection, takes time and effort.
The detection technique of conventional bridge cable thread has electromagnetic type, ultrasonic inspection, ray, guided wave and magnetostriction etc.；
These detection techniques all have that mechanism, principle and model complexity, work high above the ground, fault rate be high and use condition,
They cannot all realize on-line checking from the point of view of theoretically.
Conventional acoustic emission sensor is typically based on the materials such as piezoelectric ceramics, and its volume is big, perceptual and electromechanical coupling
Number is relatively low, therefore, cannot also meet the installation requirements of small space in bridge cable rope.
The content of the invention
It is an object of the invention to provide a kind of drag-line for conveniently monitoring fracture of wire, it is provided with the drag-line a kind of based on sound
Launch the drag-line fracture of wire monitoring sensor for passing, to realize that the thread state to bridge cable is monitored on-line, bridge is known immediately
The fracture of wire situation of drag-line during beam operation；Present invention also offers the fabrication and installation method of the drag-line that can conveniently monitor fracture of wire, solution
Drag-line fracture of wire condition monitoring of having determined needs the technical barrier of complex device, is particular enable to meet the market need of life-cycle bridge theory
Ask.
The technical scheme for solving the above problems is：A kind of drag-line for conveniently monitoring fracture of wire, including cable body, anchorage, anchoring
Material and anticorrosion structure, cable body are formed by many steel wire windings, and the two ends of steel wire are fixed in anchorage by anchoring material, and it also includes
Drag-line fracture of wire monitors sensor and signal monitoring instrument；
The drag-line fracture of wire monitoring sensor includes sensor main body, fixing device and holding wire, and the sensor main body is by coupling
Rubber, PVDF piezoelectric film, support soft rubber is closed to constitute；
PVDF piezoelectric film is made up of the stacking of one or more layers PVDF piezoelectric membrane, and insulative glue is used between multilayer PVDF piezoelectric membranes
Paste, PVDF piezoelectric film is pasted onto between coupling rubber and support soft rubber, is formed " sandwich structure "；
The described multilayer each layer of PVDF piezoelectric membranes has two output electrodes, and the electrode of same polarity is by holding wire or normal
Circuit technology is connected, and constitutes multi-layer piezoelectric film electrically in parallel；Holding wire is drawn respectively in positive and negative polarities, and wave arrestment material covers
The exposed metal sensor electrode of lid；
Under working condition, sensor main body is close on the surface of the thread of bridge cable respectively, tightens up solid using fixing device
It is fixed；Holding wire is drawn outside and provides signal source to signal monitoring instrument along thread gap by anchor system.
It is described it is a kind of conveniently monitoring fracture of wire the further technical scheme of drag-line be：Constitute the drag-line fracture of wire monitoring sensing
The support soft rubber of the sensor main body of device is that absorbing material is made.
The fixing device of drag-line fracture of wire monitoring sensor is flexible fixing device, including self-locking stainless steel band,
High intensity self-adhesion winds band or elastic hoop.
The sensor main body of the drag-line fracture of wire monitoring sensor is shaped as plane, flexible cambered-surface, annular face, broken line folder
Edged surface or other shapes being engaged with monitored drag-line outer shape.
Related another technical scheme is：A kind of preparation method of the drag-line of conveniently monitoring fracture of wire, it is in the present invention
A kind of preparation method of the drag-line of the conveniently monitoring fracture of wire stated, it is comprised the following steps：
A, making drag-line fracture of wire monitoring sensor
A1, the sensor main body for making drag-line fracture of wire monitoring sensor：
A11, the sensor body structure that drag-line fracture of wire monitoring sensor is selected according to drag-line profile simultaneously make:
It is the drag-line of hexagon for drag-line strand profile, selection sensor body structure is planar structure；
It is circular drag-line for drag-line strand profile, selection sensor body structure is globoidal structure；
For the drag-line that drag-line strand profile is other special shapes, can be customized according to special circumstances, sensor is increased as far as possible
The contact area of main body and monitoring object；
A12, cut out according to drag-line strand appearance and size multilayer PVDF piezoelectric film, coupling rubber and support rubber, and to cut
Edge carries out physical protection；
A13, using conventional circuit technology connection PVDF piezoelectric film layer same polarity electrode, make multilayer PVDF piezoelectric membrane structures
Into electric parallel connection, holding wire is drawn respectively in positive and negative polarities, and the sensor electricity therefore exposed using absorbing material covering
Pole；
A14, using insulative glue by PVDF piezoelectric film be pasted onto coupling rubber and support soft rubber between, formed " sandwich knot
Structure "；
B, installation drag-line fracture of wire monitoring sensor：
The sensor main body of drag-line fracture of wire monitoring sensor is close on 6 surfaces of thread respectively, is received using fixing device
Fasten；Holding wire is drawn outside and provides signal source to signal monitoring instrument along thread gap by anchor system.
A kind of further technical scheme of the preparation method of the drag-line of described conveniently monitoring fracture of wire is：Constitute the drawing
The support soft rubber of the sensor main body of rope fracture of wire monitoring sensor is that absorbing material is made.
In step B, the drag-line fracture of wire monitoring step of sensor 1 is installed, the fixing device is flexible fixing device, the flexibility
Fixing device includes self-locking stainless steel band, high intensity self-adhesion winding band or elastic hoop.
Due to using above-mentioned technical proposal, a kind of drag-line of conveniently monitoring fracture of wire of the present invention and preparation method thereof to have
Following beneficial effect：
1st, the present invention solves the technical barrier that conventional method needs to use complex device to drag-line fracture of wire condition monitoring, special energy
Enough meet the market demand of life-cycle bridge theory.
The bridge cable fracture of wire monitoring sensor that a kind of drag-line of conveniently monitoring fracture of wire of the present invention is carried is a kind of sound
Emission sensor, the acoustic emission sensor performance than being commonly made based on materials such as piezoelectric ceramics is good, can realize to bridge cable
Thread state monitored on-line, the fracture of wire situation of drag-line during knowing bridge operation immediately：
A kind of drag-line for conveniently monitoring fracture of wire of the present invention, the bridge cable fracture of wire monitoring sensor that it is carried includes sensor
Main body, fixing device and holding wire, the sensor main body are respectively coupling rubber, PVDF piezoelectric film, support soft from inside to outside
Rubber, PVDF piezoelectric film is pasted onto between coupling rubber and support soft rubber, is formed " sandwich structure "；Under working condition, pass
Sensor main body is close on the surface of the thread of bridge cable respectively, and fixation is tightened up using fixing device；Holding wire is along thread
Outside is drawn by anchor system and provides signal source to instrument in gap；
A kind of bridge cable fracture of wire monitoring sensor of the present invention is a kind of acoustic emission sensor, due to the sensor main body
Sensing element PVDF piezoelectric film has high machine-electric coupling coefficient, and output voltage is higher than piezoelectric ceramics by 10 under same stress condition
Times, PVDF thickness of thin and any shape can be cut randomly into, it is convenient to install；The time stability of PVDF is good, and performance is floated with the time
Move low thus better than the acoustic emission sensor performance based on materials such as piezoelectric ceramics；During normal use, steel strand wires core wire
It is in close contact with around steel wire, if core wire fracture of wire, the elasticity ripple ripple sent during thread fracture of wire is conducted to break through cable body
The sensor main body of silk monitoring sensor, causes PVDF piezoelectric film to produce Light deformation, exports high voltage；The voltage of generation leads to
Cross extraction wire and provide signal source to instrument by anchor system extraction is outside along thread gap；Instrument receives high-voltage signal,
Judge that thread generates fracture of wire situation；The fracture of wire situation of drag-line during so as to report bridge operation immediately.
2nd, there is high adaptability to different monitoring requirements, be particular enable to meet the market demand of life-cycle bridge theory：
1. a kind of sensor main body of bridge cable fracture of wire monitoring sensor of the present invention is not required to externally fed, meets thread fracture of wire
The energy requirements of long term monitoring；
2. constitute the PVDF piezoelectric film thickness of thin of sensor main body and any shape can be cut randomly into, it is convenient to install, can meet
The installation requirements of small space in bridge cable rope；
The thickness for constituting the PVDF piezoelectric film of the sensor main body of bridge cable fracture of wire monitoring sensor of the present invention only has 9~110
Micron, coupling rubber and support soft rubber may be selected 100~1000 microns of arbitrary dimension, sensor main body total thickness as needed
Degree is generally less than 2000 microns, and the length and width size of sensing can cut randomly, and have high adaptability to different monitoring requirements, special
It is not that the minimum space in gap also adapts between this thread of bridge cable；
3. this materials of PVDF have more preferable time stability；Meanwhile, the size advantage of PVDF piezoelectric film and can cut randomly
Characteristic, allows it to be built in the protection structure of cable, improves the survival rate of sensing.
Due to above feature, the different types of rridges drag-line that a kind of drag-line of conveniently monitoring fracture of wire of the present invention is made can be realized
Thread state is monitored on-line, it is applied widely, with preferable economic results in society.
Below, in conjunction with the accompanying drawings and embodiments to the drag-line of a kind of conveniently monitoring fracture of wire of the invention and preparation method thereof
Technical characteristic is further described.
Brief description of the drawings
Fig. 1 is a kind of general structure schematic diagram of the drag-line of conveniently monitoring fracture of wire；
Fig. 2 is a kind of sensing of the bridge cable fracture of wire monitoring sensor of the drag-line of the conveniently monitoring fracture of wire described in embodiment one
One of device agent structure schematic diagram（Plane）；
Fig. 3 is embodiment one（1）A kind of bridge cable fracture of wire monitoring sensor peace of the drag-line of described conveniently monitoring fracture of wire
Dress use state schematic diagram；
Fig. 4 is the A portions enlarged drawing of Fig. 3；
Fig. 5 is a kind of sensing of the bridge cable fracture of wire monitoring sensor of the drag-line of the conveniently monitoring fracture of wire described in embodiment one
The two of device agent structure schematic diagram（Cabochon）；
Fig. 6 is embodiment one（2）A kind of bridge cable fracture of wire monitoring sensor peace of the drag-line of described conveniently monitoring fracture of wire
Dress use state schematic diagram.
In figure：
1- drag-lines fracture of wire monitors sensor, 2- anticorrosion structures, 3- anchorages, 4- signal monitoring instrument, 5- anchoring material, 6- ropes
Body；61- steel wires, 6a- strands are the bridge cable of hexagon, and 6b- strands are the bridge cable of circular twisted wire form；
11- sensor main bodies, 11a- planar sensor main bodys, 11b- camber sensor main bodies, 12- fixing devices, 13- signals
Line, 14- sensor electrodes；
111- supports soft rubber, 112-PVDF piezoelectric films, 113- coupling rubber, PQ- above-ground routes.
Specific embodiment
Embodiment one
A kind of drag-line for conveniently monitoring fracture of wire：
As shown in figure 1, the drag-line that this kind can conveniently monitor fracture of wire includes that cable body 6, anchorage 3, anchoring material, anticorrosion structure, drag-line break
Silk monitoring sensor 1 and signal monitoring instrument 4, cable body 6 are entwined by many steel wires 61, and the two ends of steel wire are by anchoring material 5
It is fixed in anchorage 3；
As shown in Fig. 2, Fig. 5, the drag-line fracture of wire monitoring sensor includes sensor main body 11, fixing device 12 and holding wire
13, the sensor main body is made up of coupling rubber 113, PVDF piezoelectric film 112, support soft rubber 111, PVDF piezoelectric film 112
It is made up of the stacking of one or more layers PVDF piezoelectric membrane, is pasted using insulative glue between multilayer PVDF piezoelectric membranes, PVDF piezoelectricity
Film 112 is pasted onto between coupling rubber 113 and support soft rubber 111, is formed " sandwich structure "；
The described multilayer each layer of PVDF piezoelectric membranes has two output electrodes, and the electrode of same polarity is by holding wire or normal
Circuit technology is connected, and constitutes multi-layer piezoelectric film electrically in parallel；Holding wire 13 is drawn respectively in positive and negative polarities, wave arrestment material
The exposed sensor electrode 14 of covering；
Under working condition, sensor main body 11 is close on the surface of the thread of bridge cable respectively, is received using fixing device 12
Fasten；Holding wire 13 is drawn outside and provides signal source to signal monitoring instrument 4 along thread gap by anchor system.
In the embodiment of the present invention, the support soft rubber of the sensor main body 11 of the drag-line fracture of wire monitoring sensor is constituted
111 is that absorbing material is made.
The fixing device 12 of drag-line fracture of wire monitoring sensor is flexible fixing device, including self-locking stainless steel is pricked
Band, high intensity self-adhesion winding band or elastic hoop.
Different according to the stayed structure that can conveniently monitor fracture of wire, the bridge cable fracture of wire for carrying monitors the sensor of sensor
Agent structure is different, a kind of bridge cable fracture of wire monitoring sensor of the drag-line of conveniently monitoring fracture of wire install and use state have with
Lower different embodiments.
Embodiment one（1）
For cable body structure by high-strength zinc-plated（Epoxy spraying, smooth surface）Steel wire, winding band, internal layer HDPE and outer layer HDPE structures
It is the bridge cable 6a of hexagon into, its strand, the sensor main body of its supporting bridge cable fracture of wire monitoring sensor is flat
Face structure；
As shown in Fig. 2 the sensor main body of the planar structure be followed successively by from inside to outside coupling rubber 113, PVDF piezoelectric film 112,
Support soft rubber 111, its installment state is referring to Fig. 3, Fig. 4.
Its installation method is：By drag-line strand hexagonal side length size cut out multilayer PVDF piezoelectric film, coupling rubber and
Support rubber, and carry out physics and insulation protection to cutting edge；
Using the electrode of the same polarity of conventional circuit technology connection PVDF piezoelectric film layer, multi-layer piezoelectric film is set to constitute electrically simultaneously
Connection, holding wire 13 is drawn in positive and negative polarities respectively, and the metal sensor electrode therefore exposed using absorbing material covering
14；Structure, adopts the coupling rubber that fastens with glue, PVDF piezoelectric film and support rubber as shown in Figure 2, is respectively prepared 6 parameters one
The fracture of wire detection sensor main body of cause；These sensor main bodies are close on 6 surfaces of thread respectively, using high intensity certainly
Sensor main body 11 is tightened up fixation by viscous winding band as fixing device 12；Holding wire 13 is along thread gap by anchor system
Draw outside and provide signal source to signal monitoring instrument 4.
Embodiment one（2）
For by the bridge cable 6b that strand is circular twisted wire form, its cable body is by high-strength zinc-plated（Epoxy spraying, smooth surface）Steel wire,
Winding band, HDPE are constituted；Strand is circular twisted wire form, and its supporting bridge cable fracture of wire monitors the sensor main of sensor
Body is globoidal structure；As shown in figure 5, the sensor main body 11b of the globoidal structure be followed successively by from inside to outside coupling rubber 113,
PVDF piezoelectric film 112, support soft rubber 111, its installment state is referring to Fig. 6.
Its installation method is：The entirety of the bridge cable 6b threads that strand is circular twisted wire form is known according to design drawing
Shape, size and anti-corrosion protection form；Take this as a foundation, it is determined that the size of coupling rubber, the number of plies of PVDF piezoelectric membranes and chi
Very little, support soft rubber size, selects rational fixing device；Cut out multilayer PVDF piezoelectric membranes, coupling rubber and support
Rubber, and carry out physics and insulation protection to cutting edge；
Using the same polarity electrode of conventional circuit technology connection PVDF piezoelectric film layer, multi-layer piezoelectric film is set to constitute electrically simultaneously
Connection, holding wire 13 is drawn in positive and negative polarities respectively, and the metal sensor electrode therefore exposed using absorbing material covering
14；
Camber sensor main body 11b structures as shown in Fig. 5, adopt the coupling rubber that fastens with glue, PVDF piezoelectric film and support rubber
Glue, is respectively prepared 6 consistent fracture of wire detection sensor main bodys of parameter；The sensor main body of these globoidal structures is close to respectively
On 6 surfaces of the bridge cable 6b threads that strand is circular twisted wire form, using high intensity self-adhesion winding band as solid
Determine device 12 and sensor main body 11 is tightened up into fixation；Holding wire 13 is drawn outside and is supervised to signal along thread gap by anchor system
Survey instrument 4 and signal source is provided.
After drag-line comes into operation, if there is fracture of wire around thread, the elasticity ripple for sending is conducted to break through cable body
The sensor main body of silk monitoring sensor（The elastic wave that center thread sends is transmitted on steel wire through interracial contact）, so that
PVDF piezoelectric film exports high voltage and draws outside by anchor system along thread gap by extraction wire and carried to instrument
For signal source, the fracture of wire situation of drag-line during just knowing bridge operation immediately.
Of the invention real respectively to apply example, described signal monitoring appliance circuit is by preposition charge amplifier, bandpass filter, same
Phase Proportion amplifier, A/D conversion and singlechip group into；Described signal monitoring instrument can be amplified to the signal for receiving, filter
Fall high-frequency signal and the low frequency signal caused by vibration；Then pass through ratio amplifier and A/D is converted to data signal；Read signal
Amplitude and the duration, judge whether fracture of wire with this, if occurring, by the write-in storage of this segment data, and be incremented by
Fracture of wire number.These are all that those skilled in the art can realize that here is omitted using known technology.
Used as one kind conversion of the embodiment of the present invention one, the sensor main shape can also be other with monitored drawing
The shape that rope outer shape is engaged, for example：Annular face, broken line angle face or other match with monitored drag-line outer shape
The shape of conjunction, the contact area the purpose is to increase sensing and monitoring object.
Embodiment two
A kind of installation preparation method of the drag-line of conveniently monitoring fracture of wire
It is a kind of preparation method of the drag-line of the conveniently monitoring fracture of wire described in embodiment one, and it is comprised the following steps：
A, making drag-line fracture of wire monitoring sensor 1
A1, the sensor main body 11 for making drag-line fracture of wire monitoring sensor：
A11, the sensor body structure that drag-line fracture of wire monitoring sensor is selected according to drag-line profile simultaneously make:
It is the drag-line of hexagon for drag-line strand profile, selection sensor body structure is planar structure 11a（Referring to Fig. 2）；
It is circular drag-line for drag-line strand profile, selection sensor body structure is globoidal structure 11b（Referring to Fig. 5）；
For the drag-line that drag-line strand profile is other special shapes, can be customized according to special circumstances, sensor is increased as far as possible
The contact area of main body and monitoring object.
A12, cut out according to drag-line strand appearance and size multilayer PVDF piezoelectric film 112, coupling rubber 113 and support rubber
111, and carry out physics and insulation protection to cutting edge；
A13, the same polarity electrode using conventional circuit technology connection PVDF piezoelectric film layer, constitute multilayer PVDF piezoelectric membranes
It is electrically in parallel, holding wire 13 is drawn respectively in positive and negative polarities, and the metal sensor therefore exposed using absorbing material covering
Device electrode 14；
A14, using insulative glue by PVDF piezoelectric film 112 be pasted onto coupling rubber 113 and support soft rubber 111 between, formed
" sandwich structure "；
B, installation drag-line fracture of wire monitoring sensor 1
The sensor main body 11 of drag-line fracture of wire monitoring sensor 1 is close on 6 surfaces of thread respectively, using fixing device
12 tighten up fixation；Holding wire guides to anchorage 3 along thread gap, then guides to signal monitoring instrument 4 by the detection interface on anchorage 3 and carry
For signal source；
C, the production technology of drag-line routinely carry out anti-corrosion protection.
In the present embodiment, described signal monitoring appliance circuit is by preposition charge amplifier, bandpass filter, in-phase proportion
Amplifier, A/D conversion and singlechip group into.
Described signal monitoring instrument can be amplified to the signal for receiving, and filter high-frequency signal and caused by vibration
Low frequency signal；Then pass through ratio amplifier and A/D is converted to data signal.
Amplitude and the duration of signal are read, judges whether fracture of wire with this, if occurring, by the write-in of this segment data
In storage, and it is incremented by fracture of wire number.
The structure and operation principle of above-mentioned steps C and above-mentioned signal monitoring appliance circuit are that those skilled in the art utilize
What prior art can be realized, here is omitted.
In the present embodiment, constituting the support soft rubber 111 of the sensor main body 11 of the drag-line fracture of wire monitoring sensor is
What absorbing material was made.
The PVDF piezoelectric film 112 of sensor main body 11 of the drag-line fracture of wire monitoring sensor is constituted by one or more layers
The stacking of PVDF piezoelectric membranes is constituted, and is pasted using insulative glue between multilayer PVDF piezoelectric membranes.
In step B, the drag-line fracture of wire monitoring step of sensor 1 is installed, the fixing device 12 is flexible fixing device, according to
Stayed structure is different, and self-locking stainless steel band, high intensity self-adhesion winding band or elastic hoop etc. can be selected flexible fixed
Device.
Claims (7)
1. a kind of drag-line for conveniently monitoring fracture of wire, including cable body（6）, anchorage（3）, anchoring material and anticorrosion structure, cable body is by more
Root steel wire winding is formed, and the two ends of steel wire are fixed in anchorage by anchoring material, it is characterized in that：It is also monitored including drag-line fracture of wire
Sensor（1）And its signal monitoring instrument（4）；
The drag-line fracture of wire monitors sensor（1）Including sensor main body（11）, fixing device（12）, holding wire（13）And sensing
Device electrode（14）, the sensor main body（11）By coupling rubber（113）, PVDF piezoelectric film（112）, support soft rubber（111）
Constitute；
PVDF piezoelectric film（112）It is made up of the stacking of one or more layers PVDF piezoelectric membrane, using exhausted between multilayer PVDF piezoelectric membranes
Edge glue is pasted, PVDF piezoelectric film（112）It is pasted onto coupling rubber（113）With support soft rubber（111）Between, form " Sanming City
Control structure "；
The described multilayer each layer of PVDF piezoelectric membranes has two output electrodes, and the electrode of same polarity is by holding wire or normal
Circuit technology is connected, and constitutes multi-layer piezoelectric film electrically in parallel；Holding wire（13）Drawn respectively in positive and negative polarities, wave arrestment material
The exposed sensor electrode of material covering（14）；
Under working condition, sensor main body（11）It is close to respectively on the surface of the thread of bridge cable, using fixing device
（12）Tighten up fixation；Holding wire（13）Draw outside to signal monitoring instrument by anchor system along thread gap（4）Letter is provided
Number source.
2. it is according to claim 1 it is a kind of conveniently monitor fracture of wire drag-line, it is characterised in that：Constitute the drag-line fracture of wire
Monitor the sensor main body of sensor（11）Support soft rubber（111）It is that absorbing material is made.
3. it is according to claim 1 it is a kind of conveniently monitor fracture of wire drag-line, it is characterised in that：The drag-line fracture of wire monitoring
The fixing device of sensor（12）Flexible fixing device, including self-locking stainless steel band, high intensity self-adhesion winding band or
Elastic hoop.
4. it is according to claim 1 it is a kind of conveniently monitor fracture of wire drag-line, it is characterised in that：The drag-line fracture of wire monitoring
The sensor main body of sensor be shaped as plane, flexible cambered-surface, annular face, broken line angle face or other with monitored drag-line outside
The shape that shape shape is engaged.
5. a kind of preparation method of the drag-line of conveniently monitoring fracture of wire, it is disconnected that it is that one kind described in claim 1 can be monitored conveniently
The preparation method of the drag-line of silk, it is characterised in that：It is comprised the following steps：
A, making drag-line fracture of wire monitoring sensor（1）
A1, making drag-line fracture of wire monitoring sensor（1）Sensor main body（11）：
A11, the sensor body structure that drag-line fracture of wire monitoring sensor is selected according to drag-line profile simultaneously make:
It is the drag-line of hexagon for drag-line strand profile, selection sensor body structure is planar structure；
It is circular drag-line for drag-line strand profile, selection sensor body structure is globoidal structure；
For the drag-line that drag-line strand profile is other special shapes, can be customized according to special circumstances, sensor is increased as far as possible
The contact area of main body and monitoring object；
A12, multilayer PVDF piezoelectric film is cut out according to drag-line strand appearance and size（112）, coupling rubber（113）With support rubber
（111）, and carry out physical protection to cutting edge；
A13, using conventional circuit technology connection PVDF piezoelectric film layer same polarity electrode, make multilayer PVDF piezoelectric membrane structures
Into electric parallel connection, holding wire is drawn respectively in positive and negative polarities（13）, and the sensing therefore exposed using absorbing material covering
Device electrode（14）；
A14, using insulative glue by PVDF piezoelectric film（112）It is pasted onto coupling rubber（113）With support soft rubber（111）It
Between, formed " sandwich structure "；
B, installation drag-line fracture of wire monitoring sensor（1）：
Drag-line fracture of wire is monitored into sensor（1）Sensor main body（11）It is close to respectively on 6 surfaces of thread, using fixation
Device（12）Tighten up fixation；Holding wire（13）Draw outside to signal monitoring instrument by anchor system along thread gap（4）Carry
For signal source.
6. it is according to claim 5 it is a kind of conveniently monitoring fracture of wire drag-line preparation method, it is characterised in that：Constitute institute
State the sensor main body that drag-line fracture of wire monitors sensor（11）Support soft rubber（111）It is that absorbing material is made.
7. it is according to claim 5 it is a kind of conveniently monitoring fracture of wire drag-line preparation method, it is characterised in that：In step
B, the installation drag-line fracture of wire monitoring step of sensor 1, the fixing device（12）It is flexible fixing device, the flexible fixing device bag
Include self-locking stainless steel band, high intensity self-adhesion winding band or elastic hoop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109003007A (en) * | 2018-09-30 | 2018-12-14 | 柳州欧维姆机械股份有限公司 | A kind of drag-line intelligent management system and its working method |
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| JP2007297777A (en) * | 2006-04-27 | 2007-11-15 | Nippon Steel Engineering Co Ltd | Cable for suspension structure and measurement system |
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| CN102561185A (en) * | 2012-02-17 | 2012-07-11 | 廖光明 | Breakage safety stay cable realizing service life difference based on material strength difference |
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| CN1590638A (en) * | 2003-09-03 | 2005-03-09 | 欧进萍 | Optical fiber grating intelligent dragline |
| JP2007297777A (en) * | 2006-04-27 | 2007-11-15 | Nippon Steel Engineering Co Ltd | Cable for suspension structure and measurement system |
| JP2008184809A (en) * | 2007-01-30 | 2008-08-14 | Otaki Jack Kk | Cable anchorage device and cable anchoring method using the cable anchorage device |
| CN202202258U (en) * | 2011-08-27 | 2012-04-25 | 上海浦江缆索股份有限公司 | Omni-sealing type inhaul cable |
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