CN213804585U - Intelligent steel strand with built-in sensor - Google Patents
Intelligent steel strand with built-in sensor Download PDFInfo
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- CN213804585U CN213804585U CN202022045180.9U CN202022045180U CN213804585U CN 213804585 U CN213804585 U CN 213804585U CN 202022045180 U CN202022045180 U CN 202022045180U CN 213804585 U CN213804585 U CN 213804585U
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Abstract
An intelligent steel strand with a built-in sensor comprises edge steel wires and a center steel wire, wherein the aperture of a center hole of the center steel wire is not more than 1mm, the sensor is fixed in the center hole, the center hole of the center steel wire is a through hole penetrating through two end faces of the steel wire, the sensors are distributed in the center hole of the center steel wire, the sensors are one of three modes of optical fibers, fiber gratings, carbon fiber rods or steel wire fixing strain gauges, the number of the sensors in a sensor assembly is n, n is not less than 1, and the sensors are arranged at intervals or continuously; the sensor assembly is implanted into the central hole of the central learning steel wire in a traction rope traction mode, an air blowing mode or a traction rope traction and air blowing combined mode and then is fixed by using a bonding agent. The steel wire center steel wire force measuring device has the advantages that the sensor assembly is located in the center hole of the center steel wire, the deformation direction is basically consistent with the deformation direction of the steel strand, the obtained stress is uniform, the force measuring precision is accurate, and the strength of the steel strand is not influenced.
Description
Technical Field
The utility model relates to a steel strand wires technical field, in particular to built-in intelligent steel strand wires of sensor.
Background
Chinese patent discloses application number: 201621203505, the name is: the patent of 'optical fiber grating intelligent steel strand' is that at least one groove is arranged on a central wire, and a grating structure is arranged in the groove to realize monitoring of the stress state of the steel strand, and the structure needs to be grooved on the central wire, so that the problems that (1) during tensioning, due to extrusion of edge wires of the steel strand, particularly extrusion of an occlusion part of a clamping piece, a sensor is possibly damaged are solved; (2) the sensor is transplanted on the outer surface of the central wire, the obtained stress is not uniform, and the force measurement precision is influenced; (3) the strength of the steel wire is easily influenced due to uncontrollable factors of the notch; (4) the edge wires need to be scattered in the groove carving process, and the twisting is carried out again after the groove carving process is finished, so that the process is complex.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a sensor built-in intelligent steel strand wires that can solve above-mentioned problem.
The utility model discloses a solution is such:
the utility model provides a built-in intelligent steel strand wires of sensor, includes limit steel wire, central steel wire, the centre bore diameter of central steel wire is not more than 1mm, and the sensor is fixed in the centre bore, detects the meeting an emergency of steel strand wires through the sensor.
The more specific technical scheme also comprises the following steps: the center hole of the center steel wire is a through hole penetrating through two end faces of the steel wire, and the sensor sensors are distributed in the center hole of the center steel wire.
Further: the number of the sensors in the sensor assembly is n, n is larger than or equal to 1, and the sensors are arranged in the central hole at intervals or continuously.
Further: the sensor is an optical fiber, and strain is measured through the Brillouin scattering property of the optical fiber.
Further: the sensor is a grating engraved on an optical fiber, and the optical fiber is a sensor carrier.
Further: the sensor is a strain gauge, and a sensor carrier is adopted to fix the strain gauge.
Further: the sensor carrier is a carbon fiber rod or a steel wire.
Further: the sensor or the sensor carrier is fixed in the central hole by adopting an adhesive.
The utility model has the advantages that sensor unit is located the centre bore of central steel wire, and the direction of deformation is unanimous basically with steel strand wires direction of deformation, and the stress that its obtained is even, and force measurement accuracy is accurate, does not influence steel strand wires's intensity.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the structure of the center steel wire 2.
Fig. 3 is a schematic diagram of the three-dimensional structure of the present invention.
Fig. 4 is a sectional view of the center wire 2.
Fig. 5 is a cross-sectional view of the sensor and the carrier of the present invention both being optical fibers.
The parts of the drawings are detailed as follows: 1. edge steel wire, 2, center steel wire, 3, binder, 4, sensor carrier, 5, sensor.
Detailed Description
As shown in fig. 1 and 3, the utility model discloses a built-in intelligent steel strand wires of sensor includes limit steel wire 1, central steel wire 2's centre bore diameter is not more than 1mm, and central hole internal fixation sensor 5 detects steel strand wires's meeting an emergency through sensor 5.
As shown in fig. 2 and 4, the central hole of the central steel wire 2 is a through hole penetrating through two end faces of the steel wire, and the sensors 5 are distributed in the central hole of the central steel wire 2;
the sensor 5 employs three types:
1. the sensor 5 is an optical fiber and measures strain by the brillouin scattering properties of the optical fiber itself, as shown in fig. 5.
2. The sensor 5 is a grating engraved on an optical fiber, and the optical fiber is a sensor carrier 4; the number of the sensors 5 is n, n is more than or equal to 1, the sensors 5 are arranged at intervals, and can be arranged at intervals or continuously, and if the intervals are arranged, the intervals are equal intervals or unequal intervals, as shown in fig. 4.
3. The sensor 5 is a strain gauge, the carbon fiber rod or the steel wire is the sensor carrier 4, the number of the sensors 5 is n, n is larger than or equal to 1, the sensors 5 are arranged at intervals, the intervals can be arranged at intervals or continuously, and if the intervals are arranged, the intervals are equal intervals or unequal intervals, as shown in fig. 4.
The sensor component is fixed in the central hole by adopting a bonding agent which is one, two or more of unsaturated polyester resin, epoxy resin, vinyl acetate resin, thermosetting methacrylic resin, modified phenolic resin or flame-retardant resin.
The utility model relates to a built-in intelligent steel strand wires of sensor adopts following embodiment to prepare:
example one
(1) The steel strand manufacturing step: twisting the central steel wire with the hole and the edge steel wire without the hole into a steel strand with a central hole, and cutting the steel strand with a certain length as required;
(2) manufacturing a sensor assembly: the sensor 5 adopts optical fibers, the sensor 5 penetrates through the center hole of the center steel wire, and the sensor is the optical fiber which uses the distributed optical fiber sensing technology of Brillouin scattering;
(3) a sensor component implantation step: after the steel strand is straightened, one end of the sensor 5 is placed into one end of the central hole of the central steel wire, and the sensor 5 is made to extend out of the other end of the central hole of the central steel wire in a traction rope traction mode or an air blowing mode or a traction rope and air blowing combined mode.
Wherein:
the operation steps of the traction mode of the traction rope are as follows: firstly, the traction rope penetrates through the center hole, one end of the traction rope is connected with one end of the sensor assembly, the traction rope at the other end is pulled, and the sensor assembly is implanted into the center hole when the traction rope is pulled out.
The operation steps of the air blowing method mode are basically consistent with the traditional air blowing optical cable laying construction mode.
The combined mode of the hauling rope and the air blowing is to carry out comprehensive operation on the two modes.
(4) And (3) packaging: and applying tension to two ends of the optical fiber to straighten the optical fiber so as to fix the optical fiber in the center of the central hole of the central steel wire, injecting the adhesive into a gap between the optical fiber and the wall of the central hole from one end of the central hole, allowing the adhesive to flow out from the other end of the central hole, and blocking the outflow hole when the adhesive uniformly flows out and has no bubbles, so that the adhesive is solidified. And after the adhesive is solidified, the optical fiber and the central steel wire are fully bonded and packaged into a whole, and the intelligent steel strand with the built-in sensor is obtained. The binder is one or two or more of unsaturated polyester resin, epoxy resin, vinyl acetate resin, thermosetting methacrylic resin, modified phenolic resin or flame retardant resin.
Example two
(1) The steel strand manufacturing step: twisting the central steel wire with the hole and the edge steel wire without the hole into a steel strand with a central hole, and cutting the steel strand with a certain length as required;
(2) manufacturing a sensor assembly: the sensor adopts fiber bragg grating, the fiber bragg grating is engraved on the optical fiber, and the n gratings are engraved on the optical fiber in a spaced arrangement or a continuous arrangement;
(3) a sensor component implantation step: after the steel strand is straightened, one end of the optical fiber is placed into one end of the central hole of the central steel wire, and the optical fiber is stretched out of the other end of the central hole of the central steel wire in a traction rope traction mode or an air blowing mode or a traction rope and air blowing combined mode.
Wherein:
the operation steps of the traction mode of the traction rope are as follows: firstly, the traction rope penetrates through the central hole, one end of the traction rope is connected with one end of the optical fiber, the traction rope at the other end is pulled, and the optical fiber is implanted into the central hole when the traction rope is pulled out.
The operation steps of the air blowing method mode are basically consistent with the traditional air blowing optical cable laying construction mode.
The combined mode of the hauling rope and the air blowing is to carry out comprehensive operation on the two modes.
(4) And (3) packaging: and applying tension to two ends of the optical fiber to straighten the optical fiber so as to fix the optical fiber in the center of the central hole of the central steel wire, injecting the adhesive into a gap between the optical fiber and the wall of the central hole from one end of the central hole, allowing the adhesive to flow out from the other end of the central hole, and blocking the outflow hole when the adhesive uniformly flows out and has no bubbles, so that the adhesive is solidified. And after the adhesive is solidified, the optical fiber and the central steel wire are fully bonded and packaged into a whole, and the intelligent steel strand with the built-in sensor is obtained. The binder is one or two or more of unsaturated polyester resin, epoxy resin, vinyl acetate resin, thermosetting methacrylic resin, modified phenolic resin or flame retardant resin.
Example three:
(1) the steel strand manufacturing step: twisting the central steel wire with the hole and the edge steel wire without the hole into a steel strand with a central hole, and cutting the steel strand with a certain length as required;
(2) manufacturing a sensor assembly: the sensor adopts a strain gauge, the strain gauge is fixed by a sensor carrier 4, the n sensors and the sensor carrier are arranged at intervals or continuously connected into a strip shape, and the sensor carrier 4 is a carbon fiber rod;
(3) a sensor component implantation step: after the steel strand is straightened, one end of the carbon fiber rod is placed into one end of the central hole of the central steel wire, and the carbon fiber rod is made to extend out of the other end of the central hole of the central steel wire in a traction rope traction mode or an air blowing mode or a traction rope and air blowing combined mode.
Wherein:
the operation steps of the traction mode of the traction rope are as follows: the haulage rope passes the centre bore earlier, is connected haulage rope one end and the one end of carbon fiber stick, and the haulage rope of pulling the other end is when the haulage rope is pulled out, implants the carbon fiber stick in the centre bore.
The operation steps of the air blowing method mode are basically consistent with the traditional air blowing optical cable laying construction mode.
The combined mode of the hauling rope and the air blowing is to carry out comprehensive operation on the two modes.
(4) And (3) packaging: and applying tension to two ends of the carbon fiber rod, straightening to fix the carbon fiber rod in the center of the center hole of the center steel wire, injecting a binder into a gap between the carbon fiber rod and the wall of the center hole from one end of the center hole, allowing the binder to flow out from the other end of the center hole, stopping the outflow port when the binder uniformly flows out and has no bubbles, and solidifying the binder. And after the binder is solidified, fully binding and packaging the carbon fiber rod and the central steel wire into a whole to obtain the intelligent steel strand with the built-in sensor. The binder is one or two or more of unsaturated polyester resin, epoxy resin, vinyl acetate resin, thermosetting methacrylic resin, modified phenolic resin or flame retardant resin.
Example four:
(1) the steel strand manufacturing step: twisting the central steel wire with the hole and the edge steel wire without the hole into a steel strand with a central hole, and cutting the steel strand with a certain length as required;
(2) manufacturing a sensor assembly: the sensor adopts a strain gauge, the strain gauge is fixed by a sensor carrier 4, the n sensors and the sensor carrier are arranged at intervals or continuously connected into a strip shape, and the sensor carrier 4 is a steel wire;
(3) a sensor component implantation step: after the steel strand is straightened, one end of the steel wire is placed into one end of the central hole of the central steel wire, and the steel wire is stretched out of the other end of the central hole of the central steel wire in a traction rope traction mode or an air blowing mode or a traction rope and air blowing combined mode.
Wherein:
the operation steps of the traction mode of the traction rope are as follows: the haulage rope passes the centre bore earlier, is connected haulage rope one end and the one end of steel wire, and the haulage rope of pulling the other end is when being pulled out, implants the steel wire in the centre bore.
The operation steps of the air blowing method mode are basically consistent with the traditional air blowing optical cable laying construction mode.
The combined mode of the hauling rope and the air blowing is to carry out comprehensive operation on the two modes.
(4) And (3) packaging: and applying tension to two ends of the steel wire to straighten the steel wire so that the steel wire is fixed in the center of the central hole of the central steel wire, injecting the binder into a gap between the steel wire and the wall of the central hole from one end of the central hole, allowing the binder to flow out from the other end of the central hole, and blocking the outflow hole when the binder uniformly flows out and has no bubbles, so that the binder is solidified. And after the binder is solidified, the steel wire and the central steel wire are fully bonded and packaged into a whole, and the intelligent steel strand with the built-in sensor is obtained. The binder is one or two or more of unsaturated polyester resin, epoxy resin, vinyl acetate resin, thermosetting methacrylic resin, modified phenolic resin or flame retardant resin.
The above description is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in any way, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the technical scope of the present invention, and all those changes and modifications that do not depart from the technical scope of the present invention are equivalent to the modifications and decorations of the above embodiments.
Claims (8)
1. The utility model provides a built-in intelligent steel strand wires of sensor, includes limit steel wire (1), central steel wire (2), its characterized in that: the central steel wire (2) is provided with a central hole, the aperture of the central hole is not larger than 1mm, a sensor (5) is fixed in the central hole, and the strain of the steel strand is detected through the sensor (5).
2. The intelligent steel strand with built-in sensor according to claim 1, characterized in that: the center hole of the central steel wire (2) is a through hole penetrating through two end faces of the steel wire, and the sensors (5) are distributed in the center hole of the central steel wire (2).
3. The intelligent steel strand with built-in sensor according to claim 1 or 2, characterized in that: the number of the sensors (5) is n, n is more than or equal to 1, and the sensors are arranged in the central hole at intervals or continuously.
4. The intelligent steel strand with built-in sensor according to claim 1 or 2, characterized in that: the sensor (5) is an optical fiber, and strain is measured through the Brillouin scattering property of the optical fiber.
5. The intelligent steel strand with built-in sensor according to claim 3, characterized in that: the sensor (5) is a grating engraved on an optical fiber, and the optical fiber is a sensor carrier (4).
6. The intelligent steel strand with built-in sensor according to claim 3, characterized in that: the sensor (5) is a strain gauge, and the strain gauge is fixed by a sensor carrier (4).
7. The intelligent steel strand with built-in sensor according to claim 6, characterized in that: the sensor carrier (4) is a carbon fiber rod or a steel wire.
8. The intelligent steel strand with built-in sensor according to claim 3, characterized in that: the sensor or the sensor carrier is fixed in the central hole by adopting an adhesive.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022045180.9U CN213804585U (en) | 2020-09-17 | 2020-09-17 | Intelligent steel strand with built-in sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114197229A (en) * | 2020-09-17 | 2022-03-18 | 广西科技大学 | Intelligent steel strand with built-in sensor and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114197229A (en) * | 2020-09-17 | 2022-03-18 | 广西科技大学 | Intelligent steel strand with built-in sensor and manufacturing method thereof |
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