CN208443514U - Suo Li on-Line Monitor Device for steel cable bridge - Google Patents
Suo Li on-Line Monitor Device for steel cable bridge Download PDFInfo
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- CN208443514U CN208443514U CN201821536247.5U CN201821536247U CN208443514U CN 208443514 U CN208443514 U CN 208443514U CN 201821536247 U CN201821536247 U CN 201821536247U CN 208443514 U CN208443514 U CN 208443514U
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- suo
- monitor device
- shaped armature
- line monitor
- ingot iron
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Abstract
The utility model discloses a kind of Suo Li on-Line Monitor Device for steel cable bridge, including excitation coil, receiving coil, fixture, U-shaped armature and two ingot iron magnetic conductance seats, excitation coil and receiving coil are separately positioned on two side arms of U-shaped armature；The top of ingot iron magnetic conductance seat is plane, it is fixed on the end of U-shaped armature, the bottom of ingot iron magnetic conductance seat is the arc surface to match with the diameter of cable wire, is overlayed on the outer surface of cable wire by fixture, constitutes closed magnetic loop between U-shaped armature, cable wire and two ingot iron magnetic conductance seats；The assembly of the utility model field stripping is simple, using reliable, and effectively reduces the leakage magnetic field in magnetic loop, improves signal amplitude and measurement signal-to-noise ratio.
Description
Technical field
The utility model relates to a kind of cable tension sensor, more particularly, to a kind of applied to the monitoring of steel cable bridge HEALTH ONLINE
Cable tension sensor.
Background technique
Cable is a kind of load-carrying member flexible, and Suo Li state is whether to measure building in normal operation state
The Suo Li of one important symbol, real-time monitoring cable has important engineering significance to building health monitoring.Magnetoelasticity method is
A kind of monitoring Suo Li most potential method, this method measure the magnetic flux in cable by using magnetic flux transducer at present
Amount variation, main includes the excitation coil being wrapped on cable wire and detection coil, and excitation coil generates the magnetic signal of alternation, detection
Coil measurement obtains flux signal, using the linear relationship of the flux signal amplitude and steel cable stretching force, and then monitors and obtains
Steel cable stretching force.The features such as this method has long service life, small by external interference, can be with all weather operations, is widely used in Suo Li
Monitoring and the health monitoring of steel cable bridge.
Application No. is 201410214291.4 Chinese patents " a kind of Suo Li detection method and to use the Suo Lichuan of this method
Sensor " discloses a kind of cable tension sensor, including shell, the coil rack and excitation coil being set on cable, excitation line
By copper wire, coiling forms circle on the lateral wall of coil rack, rectangular recess is provided on the lateral wall of coil rack, rectangle is recessed
Slot position is equipped with the magnetic-electric sensing unit with Magnetostriction in rectangular recess in the middle part of the axial direction of coil rack.The party
Method is the problem is that need for coil to be wrapped on cable wire, therefore the cable wire for being suitable for new bridge construction measures, in the cable wire of bridge construction
The problem of it is inconvenient that then there is site operations in, is difficult to accurate calibration after construction.
Utility model content
The purpose of the utility model is to overcome need for coil to be wrapped on cable wire in existing magnetoelectricity Suo Li detection unit
The construction inconvenience problem measured, propose it is a kind of connect firmly simply and easily magnetoelectricity cable force measurement device with cable wire, in implementation gram
Influence of the installation gap to magnetic flux measurement is taken, and flux path has stronger market popularization value smoothly without mutation.
The technical solution of the utility model is as follows:
For the Suo Li on-Line Monitor Device of steel cable bridge, including excitation coil, receiving coil, fixture, U-shaped armature and two
Ingot iron magnetic conductance seat, excitation coil and receiving coil are separately positioned on two side arms of U-shaped armature；Ingot iron magnetic conductance seat
Top be plane, be fixed on the end of U-shaped armature, the bottom of ingot iron magnetic conductance seat is the circle to match with the diameter of cable wire
Cambered surface is overlayed on the outer surface of cable wire by fixture, and envelope is constituted between U-shaped armature, cable wire and two ingot iron magnetic conductance seats
The magnetic loop closed；Apply pulse electrical signal on excitation coil, by measuring the electromagnetic induction signal of receiving coil output end, calculates
Obtain the Suo Li of cable wire.
In the above-mentioned Suo Li on-Line Monitor Device for steel cable bridge, temperature sensor is provided on U-shaped armature.
In the above-mentioned Suo Li on-Line Monitor Device for steel cable bridge, fixture includes curved plate, screw rod and pressing plate, and pressing plate is set
The U-shaped bottom in U-shaped armature is set, curved plate working face is the arc surface to match with the diameter of cable wire, and screw rod setting is being pressed
Between plate and curved plate, ingot iron magnetic conductance seat is overlayed on the outer surface of cable wire.
In the above-mentioned Suo Li on-Line Monitor Device for steel cable bridge, screw rod is interior six sides screw rod.
In the above-mentioned Suo Li on-Line Monitor Device for steel cable bridge, U-shaped armature is integral structure made of silicon steel sheet.
In the above-mentioned Suo Li on-Line Monitor Device for steel cable bridge, ingot iron magnetic conductance seat is bonded in the end of U-shaped armature.
In the above-mentioned Suo Li on-Line Monitor Device for steel cable bridge, ingot iron magnetic conductance seat is existed by non-magnetic ring plate shroud ring
The end of U-shaped armature.
In the above-mentioned Suo Li on-Line Monitor Device for steel cable bridge, the outer diameter of U-shaped armature and the outer diameter of cable wire are consistent.
In the above-mentioned Suo Li on-Line Monitor Device for steel cable bridge, the outer diameter of ingot iron magnetic conductance seat and the outer diameter ruler of cable wire
It is very little consistent.
The advantageous effects that the utility model has are as follows:
1, excitation coil and receiving coil are separately positioned on U-shaped armature by the Suo Li on-Line Monitor Device of the utility model
On two side arms, and by pressing plate and screw-rod structure, U-shaped armature, magnetic conductance seat are crimped on the outer surface of cable wire, form closing
Magnetic loop, realize magnetoelasticity method cable force measurement, field stripping assembly is simple, using reliable；The compressing structure changes
Conventional brace the end of U-shaped armature is improved after crimping mode, it is ensured that the outer diameter of magnetizer is thick in entire magnetic loop
It is carefully consistent, avoids the problem of magnetic field is leaked from the crimping position that outer diameter changes.
2, the magnetic conductance seat of the utility model is made of ingot iron, on the one hand has good permeance, another party
Plane materiel material hardness itself is low, is easy processing and forming, and is easily deformed under the pressure of screw rod so that the surface of magnetic conductance seat be easy with
The distortion cable wire seamless surface fitting of multistrand rope composition, to reduce the leakage magnetic field in magnetic loop, and then improves
Signal amplitude and measurement signal-to-noise ratio.
3, the utility model is provided with temperature sensor on the outside of U-shaped armature, passes through the work of real-time monitoring device
Temperature, and compared with the environment in laboratory is examined to obtain calibration result pair, the Suo Li of monitoring is modified, it is ensured that measurement knot
The accuracy of fruit.
Detailed description of the invention
Fig. 1 is the operation principle schematic diagram of magneto-electric Suo Li on-Line Monitor Device；
Fig. 2 is the structural schematic diagram of Suo Li on-Line Monitor Device；
Fig. 3 is structural schematic diagram of the Fig. 2 in A-A section；
Fig. 4 is the structural schematic diagram of ingot iron magnetic conductance seat；
Fig. 5 is the side view of Fig. 4；
Fig. 6 is the circuit diagram of Suo Li on-Line Monitor Device.
Appended drawing reference are as follows: 1-cable wire；2-excitation coils；3-receiving coils；4-U-shaped armature；5-fixtures；6-arcs
Bottom plate；7-ingot iron magnetic conductance seats；8-screw rods；9-nuts；10-pressing plates；11-temperature sensors；12-bottoms；13—
Top；15-flux signals；21-signal generators；22-amplifiers；23-data collecting cards；24-computers；25-arteries and veins
Rush signal.
Specific embodiment
As shown in Figure 1, the magneto-electric Suo Li on-Line Monitor Device of the utility model bypass structure mainly includes excitation coil
2, U-shaped armature 4 made of silicon steel sheet is fixed on cable wire 1 by receiving coil 3, U-shaped armature 4 and fixture 5, fixture 5, and is formed and closed
The magnetic loop of conjunction.After excitation coil 2 is passed through repetition pulse signal, flux signal 15, warp can be generated inside U-shaped armature 4
It is received the reception of coil 3 after crossing cable wire 1, electromagnetic induction signal is obtained after carrying out signal enhanced processing, according to magnetoelectricity cable force measurement
Principle, the signal amplitude and the Suo Li of cable wire 1 are in a linear relationship, according to the calibration in laboratory to Suo Li and electromagnetism output signal
Coefficient can in real time be monitored Suo Li.
As shown in Figures 2 to 5, the specific structure of the utility model cable force monitoring device includes excitation coil 2, receiving coil
3, fixture 5, U-shaped armature 4 and two ingot iron magnetic conductance seats 7, excitation coil 2 and receiving coil 3 are separately positioned on U-shaped armature 4
Two U-shaped side arms on；The top 12 of ingot iron magnetic conductance seat 7 is plane, is fixed on the end of U-shaped armature 4, ingot iron is led
The bottom 13 of magnetic support 7 is the arc surface to match with the diameter of cable wire 1, is overlayed on the outer surface of cable wire 1 by fixture 5, U-shaped
Closed magnetic loop is constituted between armature 4, cable wire 1 and two ingot iron magnetic conductance seats 7；Ingot iron magnetic conductance seat 7 can be bonded in U
The end of type armature 4, or by non-magnetic ring plate (such as aluminium, copper, plastic stool) shroud ring in the end of U-shaped armature 4.It is protected in production
The outer diameter for demonstrate,proving U-shaped armature 4, cable wire 1 and ingot iron magnetic conductance seat 7 is almost the same.
Traditional fixture is made an issue of in the end of U-shaped armature 4, usually the end overstriking of U-shaped armature 4, puts on one
The intermediate plate of double semi-rings is fixed on cable wire 1, and in this way since the end size of U-shaped armature 4 changes, the magnetic resistance that will lead to junction becomes
Change, and then leakage magnetic field occurs, influences the amplitude and signal-to-noise ratio of measuring signal.
The utility model uses the structure such as Fig. 2-3, and fixture 5 includes curved plate 6, screw rod 8 and pressing plate 10, pressing plate 10
The U-shaped bottom of U-shaped armature 4 is set, and 6 working face of curved plate is the arc surface to match with the diameter of cable wire 1, and screw rod 8 is set
It sets between pressing plate 10 and curved plate 6, ingot iron magnetic conductance seat 7 is overlayed on the outer surface of cable wire 1.In screw rod 8 uses
Six side's screw rods, can apply biggish external force.U-shaped armature 4 is integral structure made of silicon steel sheet, and hardness is higher, and magnetic conductance seat
It is made of ingot iron, on the one hand there is good permeance, another aspect material hardness itself is low, is easy processing and forming
Circular arc type is made.Magnetic conductance seat is easily deformed under the pressure of screw rod simultaneously, is preferably attached to the outer surface of cable wire 1.
In construction, after the removal of outer protection material and wiped clean by cable wire 1, ingot iron magnetic conductance seat 7 is pressed in steel
The outside of rope 1, cable wire 7 are generally twisted into using the wirerope of multiply, and surface is groove structure, and the lesser pure iron of hardness can be with
Its surface fits closely, so that joint place is very close to each other, so that the leakage magnetic field in magnetic loop is reduced,
In order to overcome influence of the environment temperature to measurement result, temperature sensor 11 is provided on U-shaped armature 4, it is settable
In the bottom position of U-shaped structure, by the operating temperature of real-time monitoring device, and examines and demarcated with the environment in laboratory
As a result compared to pair, the Suo Li of monitoring is modified, it is ensured that the accuracy of measurement result.
As shown in fig. 6, cable force monitoring device can be equivalent to concatenated reluctance return path, wherein RWFor the magnetic resistance of excitation coil, RS
For the magnetic resistance of measuring coil, RCFor the magnetic resistance for the magnetic loop that U-shaped armature 4, cable wire 1 and two ingot iron magnetic conductance seats 7 are constituted；Letter
Number generator 21 generates the repetition pulse signal 25 that frequency 500Hz, amplitude 1V, duty ratio are 5%, is applied to equivalent circuit
VinEnd, the signal V exported after amplifier 22 carries out about 50 times of amplificationoutIt is acquired by data collecting card 23, synchronizes and adopt
Collect the temperature signal of temperature sensor 10, and according to laboratory to the calibration result of Suo Li at a temperature of varying environment and voltage value,
The changing value of Suo Li can be calculated.
The Suo Li on-Line Monitor Device of the utility model have field stripping assembly it is simple, using reliable, can be widely used for
It is building in the cable force monitoring of built steel cable bridge, there is extensive promotional value.
Claims (9)
1. being used for the Suo Li on-Line Monitor Device of steel cable bridge, it is characterised in that: including excitation coil (2), receiving coil (3), folder
Have (5), U-shaped armature (4) and two ingot iron magnetic conductance seats (7), excitation coil (2) and receiving coil (3) are separately positioned on U-shaped
On two side arms of armature (4)；The top (12) of ingot iron magnetic conductance seat (7) is plane, is fixed on the end of U-shaped armature (4),
The bottom (13) of ingot iron magnetic conductance seat (7) is the arc surface to match with the diameter of cable wire (1), is overlayed by fixture (5)
On the outer surface of cable wire (1), closed magnetic is constituted between U-shaped armature (4), cable wire (1) and two ingot iron magnetic conductance seats (7) and is returned
Road；Excitation coil applies pulse electrical signal on (2), by measuring the electromagnetic induction signal of receiving coil (3) output end, calculates
To the Suo Li of cable wire.
2. the Suo Li on-Line Monitor Device according to claim 1 for steel cable bridge, it is characterised in that: on U-shaped armature (4)
It is provided with temperature sensor (11).
3. the Suo Li on-Line Monitor Device according to claim 1 or 2 for steel cable bridge, it is characterised in that: fixture (5) packet
The U-shaped bottom in U-shaped armature (4), curved plate (6) is arranged in bracket bottom plate (6), screw rod (8) and pressing plate (10), pressing plate (10)
Working face is the arc surface to match with the diameter of cable wire (1), and screw rod (8) is arranged between pressing plate (10) and curved plate (6),
Ingot iron magnetic conductance seat (7) is overlayed on the outer surface of cable wire (1).
4. the Suo Li on-Line Monitor Device according to claim 3 for steel cable bridge, it is characterised in that: screw rod (8) is interior
Six side's screw rods.
5. the Suo Li on-Line Monitor Device according to claim 1 or 2 for steel cable bridge, it is characterised in that: U-shaped armature
It (4) is integral structure made of silicon steel sheet.
6. the Suo Li on-Line Monitor Device according to claim 1 or 2 for steel cable bridge, it is characterised in that: ingot iron
Magnetic conductance seat (7) is bonded in the end of U-shaped armature (4).
7. the Suo Li on-Line Monitor Device according to claim 1 or 2 for steel cable bridge, it is characterised in that: ingot iron
Magnetic conductance seat (7) by non-magnetic ring plate shroud ring U-shaped armature (4) end.
8. the Suo Li on-Line Monitor Device according to claim 1 or 2 for steel cable bridge, it is characterised in that: U-shaped armature
(4) outer diameter is consistent with the outer diameter of cable wire (1).
9. the Suo Li on-Line Monitor Device according to claim 1 or 2 for steel cable bridge, it is characterised in that: ingot iron
The outer diameter of magnetic conductance seat (7) is consistent with the outer diameter of cable wire (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821536247.5U CN208443514U (en) | 2018-09-17 | 2018-09-17 | Suo Li on-Line Monitor Device for steel cable bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821536247.5U CN208443514U (en) | 2018-09-17 | 2018-09-17 | Suo Li on-Line Monitor Device for steel cable bridge |
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| Publication Number | Publication Date |
|---|---|
| CN208443514U true CN208443514U (en) | 2019-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821536247.5U Active CN208443514U (en) | 2018-09-17 | 2018-09-17 | Suo Li on-Line Monitor Device for steel cable bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682505A (en) * | 2019-01-31 | 2019-04-26 | 重庆大学 | A kind of cable force measurement device |
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2018
- 2018-09-17 CN CN201821536247.5U patent/CN208443514U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109682505A (en) * | 2019-01-31 | 2019-04-26 | 重庆大学 | A kind of cable force measurement device |
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Effective date of registration: 20200821 Address after: 250031 Shandong Province Flyover District of Ji'nan City Road 29. Co-patentee after: Shandong construction engineering quality inspection and Testing Center Co.,Ltd. Patentee after: Shandong Academy of Building Science Co.,Ltd. Address before: 250031 Shandong city of Ji'nan province WuYingShan Road No. 29 Co-patentee before: SHANDONG JIANKE SPECIAL BUILDING ENGINEERING TECHNOLOGY CENTER Patentee before: SHANDONG PROVINCIAL ACADEMY OF BUILDING RESEARCH |