CN109990925A - A kind of integral structure of bridge cable magnetic stress sensor - Google Patents
A kind of integral structure of bridge cable magnetic stress sensor Download PDFInfo
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- CN109990925A CN109990925A CN201910375608.5A CN201910375608A CN109990925A CN 109990925 A CN109990925 A CN 109990925A CN 201910375608 A CN201910375608 A CN 201910375608A CN 109990925 A CN109990925 A CN 109990925A
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- end cap
- bridge cable
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- cylinder
- cable
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 46
- 238000005259 measurement Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 12
- 239000004677 Nylon Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003302 ferromagnetic material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/12—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of integral structures of bridge cable magnetic stress sensor, cylinder including the radial direction setting circular hollow along bridge cable, it is arranged in the circular hollow of the cylinder, and it is wound with the coil rack of the measuring coil of the variable quantity of measurement cable magnetic conductivity, correspond the outer surface edge for being set in bridge cable, positioned at the both ends of cylinder, and it is inserted into the circular hollow of cylinder and is bonded the inner end cap of the coil rack, it is arranged through any inner end cap, and annular uniform intervals are perpendicular to the radial direction of bridge cable, for adjusting cylinder, inner end cap, at least three inner end cap that measuring coil and the concentric shafts of bridge cable are overlapped adjusts bolt, it is fixed on cylinder, for acquiring the data acquisition box of the variable quantity of cable magnetic conductivity, and it is connected to the sensor between data acquisition box and measuring coil Cable.Through the above scheme, the present invention has many advantages, such as that structure is simple, measurement accuracy is high, protects in place.
Description
Technical field
The present invention relates to bridge cable stress detection field, the one of especially a kind of bridge cable magnetic stress sensor
Body structure.
Background technique
Bridge cable as described herein include parallel steel wire rope, parallel steel stranded wire rope, closed wirerope, parallel rebar rope,
The bridge cable of the ferromagnetic materials such as spiral steel strand wires.Wherein, the magnetic that the magnetoelasticity principle based on ferromagnetic material is made is answered
Force snesor is using measured steel component composition sensor, and when the stress that it bears changes, magnetic conductivity is simultaneously
It changes, by measuring the variable quantity of the magnetic conductivity, and obtains the stress intensity of bridge cable.Bridge cable described herein
Rope includes containing cable sheath tube and without two kinds of forms of cable sheath tube.
Currently, existing bridge cable magnetic stress sensor is mostly split type structure, except sensor body, need to match
Sets of data collecting cassette uses cable connection between magnetic stress sensor and data acquisition box.In the prior art, bridge cable measures
It is to recycle single-ended or both-end clip and cable positioning to fix, data acquisition by the way that sensor body to be set on cable
Box is mounted on the position for being suitble to artificial acquisition or field wiring, it is generally the case that data acquisition box and sensor body are apart from several
Ten meters are differed to rice up to a hundred, i.e., sensor body and data acquisition box take separate structure mode.Since existing magnetic stress passes
Transmission cable between sensor ontology and data acquisition box is longer, on the one hand introduces cable resistance, influences the measurement of sensor
Precision；On the other hand make work progress relatively complicated, and long-term operation increases system failure rate.
Therefore, be badly in need of proposing a kind of structure is simple, measurement is more accurate, protection in place, the low magnetic stress of maintenance workload passes
Sensor.
Summary of the invention
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of integration knots of bridge cable magnetic stress sensor
Structure, The technical solution adopted by the invention is as follows:
A kind of integral structure of bridge cable magnetic stress sensor is arranged round including the radial direction along bridge cable
Hollow cylinder is arranged in the circular hollow of the cylinder and is wound with the measurement line of the variable quantity of measurement cable magnetic conductivity
The coil rack of circle corresponds the outer surface edge for being set in bridge cable, the both ends positioned at cylinder and the insertion cylinder
Circular hollow in and be bonded the inner end cap of the coil rack, through any inner end cap setting and annular uniform intervals
It is overlapped perpendicular to radial direction, the concentric shafts for adjusting cylinder, inner end cap, measuring coil and bridge cable of bridge cable
At least three inner end cap adjust bolt, be fixed on the cylinder, the data acquisition box of variable quantity for acquiring magnetic conductivity,
And it is connected to the sensor cable between data acquisition box and measuring coil.
Preferably, the inner wall of any inner end cap and far from cylinder side be equipped with a step.
Further, the integral structure of the bridge cable magnetic stress sensor further includes the inner wall along the step
It is arranged, adjusts the surface for being extruded in bridge cable after being bolted and rotating the inner end cap adjusting bolt with the inner end cap
The inner end cap cushion block at edge.
Preferably, the inner end cap cushion block is metal or nylon material.
Further, the integral structure of the bridge cable magnetic stress sensor further includes being set in the bridge cable
The outer end cap that Suo Shang, one end are detachably connected with the inner end cap and the cable sheath tube of the other end and bridge cable is connect, with
And uniform intervals are provided with the edge of the outer end cap and the outer end cap are fixed in the inner end cap using bolt
Outer end cap fixedly connected hole.
Further, the integral structure of the bridge cable magnetic stress sensor further includes being set in the bridge cable
Suo Shang and the sealing ring being placed between the inner end cap and outer end cap.
Further, the integral structure of the bridge cable magnetic stress sensor further includes being fixed on the cylinder
Rigid connector, and be arranged between the rigid connector and data acquisition box, for being mentioned to the data acquisition box
For supporting the collecting cassette gasket with waterproof sealing.
Further, the integral structure of the bridge cable magnetic stress sensor further includes being connected to the data
Collecting cassette waterproof connector between collecting cassette and sensor cable.
Further, the integral structure of the bridge cable magnetic stress sensor, the inner end cap depend on the one of cylinder
Hold tapered or straight tube shape.
Preferably, cone angle of the inner end cap by one end of cylinder is 15 °~90 °.
Compared with prior art, the invention has the following advantages:
(1) inner end cap is dexterously arranged in the present invention, and the radial direction perpendicular to bridge cable is arranged in inner end cap
Inner end cap adjust bolt, the concentric shafts of the concentric shafts and bridge cable that make cylinder, inner end cap and measuring coil are completely coincident, such as
This one, just can improve the measuring accuracy of strain gauge.
(2) the present disclosure applies equally to the bridge cables with cable sheath tube, by the way that sealing ring and outer end cap is arranged,
Guarantee the measurement component protection of the variable quantity of magnetic conductivity in place；In addition, acquisition is arranged in the bottom of data acquisition box in the present invention
Box gasket guarantees data acquisition box protection in place；It is designed in this way, not only can be reduced maintenance workload, but also can prolong the service life.
(3) connection of magnetic stress sensor body and data acquisition box of the invention takes integrated structure to design, if
Meter is advantageous in that, overcomes the problems, such as that conventional two-piece structure causes measurement error；Simultaneously, moreover it is possible to increase convenience for construction, drop
Failure rate during low system cost, the long-term operation of reduction.In conclusion the present invention has, structure is simple, measurement is more accurate, anti-
The advantages that protecting in place has very high practical value and promotional value in bridge cable stress detection field.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to the attached drawing used required in embodiment
It is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as to protection
The restriction of range to those skilled in the art without creative efforts, can also be attached according to these
Figure obtains other relevant attached drawings.
Fig. 1 is longitudinal profile schematic diagram of the invention.
Fig. 2 is transverse sectional view of the invention.
Fig. 3 is scheme of installation of the invention.
Fig. 4 is transversely mounted schematic diagram for of the invention.
In above-mentioned attached drawing, the corresponding component names of appended drawing reference are as follows:
1- cylinder, 2- inner end cap, 3- inner end cap cushion block, 4- inner end cap adjust bolt, 5- sealing ring, 6- outer end cap, outside 7-
End cap fixedly connected hole, 8- bridge cable, 9- cable sheath tube, 10- data acquisition box, 11- rigid connector, 12- collecting cassette
Gasket, 13- collecting cassette waterproof connector, 14- sensor cable, 15- collecting cassette fixing bolt.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application apparent, with reference to the accompanying drawings and examples to the present invention
It is described further, embodiments of the present invention include but is not limited to the following example.Based on the embodiment in the application, ability
Domain those of ordinary skill every other embodiment obtained without making creative work, belongs to the application
The range of protection.
Embodiment
As shown in Figures 1 to 4, a kind of integral structure of bridge cable magnetic stress sensor is present embodiments provided, is needed
It is noted that the directionalities term such as " outer edge ", " top ", " bottom ", " upper end ", " lower end " described in the present embodiment is base
Illustrate in attached drawing.The present embodiment is illustrated by taking the bridge cable 8 with cable sheath tube 9 as an example:
In the present embodiment, the integral structure of the bridge cable magnetic stress sensor, wherein magnetic stress sensor body
Including along bridge cable radial direction setting circular hollow cylinder 1, be arranged in the circular hollow of the cylinder 1 and around
It is formed with the coil rack of the measuring coil of the variable quantity of measurement cable magnetic conductivity, corresponds the outer surface for being set in bridge cable
In the circular hollow at edge, the both ends positioned at cylinder 1 and the insertion cylinder 1 and it is bonded the inner end cap 2 of the coil rack,
The inner wall of any inner end cap 2 and the step far from 1 side of cylinder are set, through any inner end cap 2 setting and
Annular uniform intervals perpendicular to the radial direction of bridge cable, for adjusting cylinder 1, inner end cap 2, measuring coil and bridge cable
3 inner end caps being overlapped of concentric shafts adjust bolt 4, adjust bolt 4 along the inner wall setting of the step, with the inner end cap
Connection and the rotation inner end cap adjust the interior of the metal or nylon material that the marginal surface of bridge cable is extruded in after bolt 4
End cap cushion block 3 is set on the bridge cable, one end and the inner end cap 2 are detachably connected and the other end and bridge cable
Cable sheath tube connection outer end cap 6, uniform intervals are provided with the edge of the outer end cap 6 and using bolt by institute
The outer end cap fixedly connected hole 7 that outer end cap 6 is fixed in the inner end cap 2 is stated, and is set on the bridge cable and sets
Sealing ring 5 between the inner end cap 2 and outer end cap 6.In the present embodiment, inner end cap is a hollow plug, in cone
Shape or straight tube shape, cone angle is in the range of 15 °~90 °.The step depth L of inner end cap is made of L1 and two sections of L2, depth L1
In the range of 0~L, depth L2 is in the range of 0~L.In addition, the present embodiment, inner end cap cushion block is preferably set up 3, and
Its circumference for being distributed in stepped inner walls, inner end cap adjusts bolt and jacks up inner end cap cushion block, by the coil rack of magnetic stress sensor
Coil and cylinder to be measured are non-contact to be fixed on cable, and the present embodiment, which adjusts bolt by adjusting inner end cap, makes sensor body
Concentricity is kept with cable, outer end cap is installed again after the concentricity of complete sensor sheet to be regulated.
In addition, the magnetic stress sensor body of the present embodiment and the connection of data acquisition box take integrated structure to set
Meter, wherein data acquisition box include be fixed on the cylinder 1, the data acquisition box 10 of variable quantity for acquiring magnetic conductivity,
The sensor cable 14 being connected between data acquisition box 10 and measuring coil, the rigid connector being fixed on the cylinder 1
11, be arranged between the rigid connector 11 and data acquisition box 10, for the data acquisition box 10 provide support and
The collecting cassette gasket 12 of waterproof sealing, and the collecting cassette being connected between the data acquisition box 10 and sensor cable 14
Waterproof connector 13.
It is briefly described as follows the installation process of the present apparatus:
Before factory: coil rack (winding has measuring coil on skeleton) being inserted in cylinder, using bolt by inner end cap
(under), inner end cap (on) be fixed on cylinder；And use collecting cassette fixing bolt 15 by the data acquisition box, rigid connection
Part and collecting cassette gasket are fixed on the cylinder；Finally, utilizing collecting cassette waterproof connector, sensor cable connection measurement
Coil and data acquisition box.
In-site installation: by outer end cap (under), sealing ring (under), cylinder (with coil rack, inner end cap, data acquisition box,
Rigid connector and collecting cassette gasket), sealing ring (on) and outer end cap (on) be successively inserted in bridge cable designated mounting position.
Before being inserted in, it is necessary to assure the space among 3 inner end cap cushion blocks is enough to penetrate bridge cable.Finally, using bolt by outer end
Lid (under), sealing ring (under), sealing ring (on) and outer end cap (on) be fixed on the cylinder, and by outer end cap (under), outer end
Lid (on) connect with cable sheath tube 9, to realize the installation of bridge cable magnetic stress sensor.
In conclusion the present invention not only can guarantee the installation concentricity of magnetic stress sensor, but also the line of transmission cable can be reduced
Damage, promotes the measurement accuracy of sensor-based system.Moreover, the present invention also can increase convenience for construction, reduce system cost, reduce
Failure rate during long-term operation.It can be said that compared with prior art, the present invention is with substantive distinguishing features outstanding and significantly
Progress has very high practical value and promotional value in bridge cable stress detection field.
Above-described embodiment is merely a preferred embodiment of the present invention, and it is not intended to limit the protection scope of the present invention, as long as using
Design principle of the invention, and the non-creative variation worked and made is carried out on this basis, it should belong to of the invention
Within protection scope.
Claims (10)
1. a kind of integral structure of bridge cable magnetic stress sensor, including along the radial direction of bridge cable setting circle
Empty cylinder (1) is arranged in the circular hollow of the cylinder (1) and is wound with the survey of the variable quantity of measurement cable magnetic conductivity
Measure the coil rack of coil, which is characterized in that further include corresponding be set in the outer surface edge of bridge cable, be located at cylinder
(1) circular hollow at both ends and the insertion cylinder (1) is interior and is bonded the inner end cap (2) of the coil rack, through any
The inner end cap (2) setting and annular uniform intervals perpendicular to the radial direction of bridge cable, for adjusting cylinder (1), inner end
At least three inner end cap that the concentric shafts of lid (2), measuring coil and bridge cable are overlapped adjusts bolt (4), is fixed on the cylinder
The data acquisition box (10) of variable quantity on body (1), for acquiring magnetic conductivity, and it is connected to data acquisition box (10) and measurement
Sensor cable (14) between coil.
2. a kind of integral structure of bridge cable magnetic stress sensor according to claim 1, which is characterized in that any
The inner wall of the inner end cap (2) and far from cylinder (1) side be equipped with a step.
3. a kind of integral structure of bridge cable magnetic stress sensor according to claim 2, which is characterized in that also wrap
The inner wall setting along the step is included, is connect with inner end cap adjusting bolt (4) and rotates the inner end cap adjusting bolt
(4) the inner end cap cushion block (3) of the marginal surface of bridge cable is extruded in after.
4. a kind of integral structure of bridge cable magnetic stress sensor according to claim 3, which is characterized in that described
Inner end cap cushion block (3) is metal or nylon material.
5. a kind of integral structure of bridge cable magnetic stress sensor according to claim 1, which is characterized in that also wrap
Include be set on the bridge cable, one end and the inner end cap (2) are detachably connected and the cable of the other end and bridge cable
The outer end cap (6) and uniform intervals of protecting pipe connection are provided with the edge of the outer end cap (6) and will using bolt
The outer end cap (6) is fixed on the outer end cap fixedly connected hole (7) on the inner end cap (2).
6. a kind of integral structure of bridge cable magnetic stress sensor according to claim 5, which is characterized in that also wrap
Include the sealing ring (5) for being set on the bridge cable and being placed between the inner end cap (2) and outer end cap (6).
7. a kind of integral structure of bridge cable magnetic stress sensor according to claim 1, which is characterized in that also wrap
The rigid connector (11) being fixed on the cylinder (1) is included, and setting is acquired in the rigid connector (11) and data
Between box (10), for providing the collecting cassette gasket (12) of support and waterproof sealing to the data acquisition box (10).
8. a kind of integral structure of bridge cable magnetic stress sensor according to claim 1 or claim 7, which is characterized in that
It further include the collecting cassette waterproof connector (13) being connected between the data acquisition box (10) and sensor cable (14).
9. a kind of integral structure of bridge cable magnetic stress sensor according to claim 1, which is characterized in that described
Inner end cap (2) leans on the one end of cylinder (1) tapered or straight tube shape.
10. a kind of integral structure of bridge cable magnetic stress sensor according to claim 8, which is characterized in that institute
Stating the cone angle of inner end cap (2) by the one end of cylinder (1) is 15 °~90 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910375608.5A CN109990925A (en) | 2019-05-07 | 2019-05-07 | A kind of integral structure of bridge cable magnetic stress sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910375608.5A CN109990925A (en) | 2019-05-07 | 2019-05-07 | A kind of integral structure of bridge cable magnetic stress sensor |
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Application publication date: 20190709 |