CN112284585A - Device based on optical fiber testing wheel pressure - Google Patents
Device based on optical fiber testing wheel pressure Download PDFInfo
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- CN112284585A CN112284585A CN202011108527.8A CN202011108527A CN112284585A CN 112284585 A CN112284585 A CN 112284585A CN 202011108527 A CN202011108527 A CN 202011108527A CN 112284585 A CN112284585 A CN 112284585A
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 112
- 238000012360 testing method Methods 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 239000012528 membrane Substances 0.000 claims abstract description 10
- 238000002310 reflectometry Methods 0.000 claims abstract description 4
- 239000003822 epoxy resin Substances 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229920002799 BoPET Polymers 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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Classifications
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- 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
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a device for testing wheel pressure based on optical fibers, which comprises a wheel body, a track arranged below the wheel body and a detection mechanism arranged on the side surface of the track, wherein the wheel body is provided with a plurality of wheels; the detection mechanism comprises a shell, a deformation membrane arranged at the opening end of the shell and an optical fiber assembly arranged in the shell; the optical fiber assembly comprises a first optical fiber arranged on the inner side wall of the deformation film and a second optical fiber penetrating through the closed end of the shell, the first optical fiber and the second optical fiber are coaxially arranged, and a high-reflectivity film is arranged between the first optical fiber and the deformation film; the second optical fiber is connected with a three-port circulator, the three-port circulator is connected with a light source and a photoelectric detector, a receiving and transmitting multiplexing end of the three-port circulator is connected with the second optical fiber, an output end of the three-port circulator is connected with an input end of the photoelectric detector, an input end of the three-port circulator is connected with an output end of the light source, and an output end of the photoelectric detector is connected with a collection card. The invention provides a device which enables a crane to stably operate and can accurately detect wheel pressure of the crane.
Description
Technical Field
The invention relates to the field of hoisting equipment detection devices, in particular to a device for testing wheel pressure based on optical fibers.
Background
The crane is an important material handling and industrial installation device in modern comprehensive logistics, and the wheel pressure of the crane is the vertical pressure of a wheel to a track. The wheel pressure detection and calculation are of great significance to the design, manufacture and use of the crane. The strength calculation of the crane running mechanism parts and the metal structure mainly depends on the maximum wheel pressure of the crane, and meanwhile, the method provides a basis for designing a wheel device and also provides raw data for designing a rail supporting structure. And the minimum wheel pressure is mainly used for checking the slip of the wheel when the running mechanism is started and braked. Therefore, if deviation occurs in the wheel pressure measuring and calculating processes, the influence on the overall performance of the crane is huge. The existing wheel pressure detection mode is generally characterized in that an additional structure is arranged on a crane track, a patch type sensor is additionally arranged in the additional structure to carry out wheel pressure detection, and the operation of a crane can be influenced by the measurement mode.
Disclosure of Invention
The invention aims to provide a device for testing wheel pressure based on optical fibers, which aims to solve the problems and provide a device which enables a crane to stably run and can accurately detect the wheel pressure of the crane.
In order to achieve the purpose, the invention provides the following scheme:
a device for testing wheel pressure based on optical fibers comprises a wheel body, a track arranged below the wheel body and a detection mechanism arranged on the side surface of the track;
the detection mechanism comprises a shell, a deformation membrane arranged at the opening end of the shell and an optical fiber assembly arranged in the shell; the optical fiber assembly comprises a first optical fiber arranged on the inner side wall of the deformation film and a second optical fiber penetrating through the closed end of the shell, the first optical fiber and the second optical fiber are coaxially arranged, and a high-reflectivity film is arranged between the first optical fiber and the deformation film;
the second optical fiber is connected with a three-port circulator, the three-port circulator is connected with a light source and a photoelectric detector, a receiving and transmitting multiplexing end of the three-port circulator is connected with the second optical fiber, an output end of the three-port circulator is connected with an input end of the photoelectric detector, an input end of the three-port circulator is connected with an output end of the light source, and an output end of the photoelectric detector is connected with a collection card.
Preferably, the first optical fiber is provided with a first optical fiber end face, the second optical fiber is provided with a second optical fiber end face, the first optical fiber end face, the second optical fiber end face and the deformation film are arranged in parallel, and a space is reserved between the first optical fiber end face and the second optical fiber end face.
Preferably, the light source is a single-wave light source, and the first optical fiber and the second optical fiber are graded-index multimode fibers.
Preferably, the deformation film is a PET film, the thickness of the deformation film is 0.2mm, and the diameter of the deformation film is the same as the outer diameter of the shell.
Preferably, the high reflective film is a total station reflector plate.
Preferably, the inner side surface of the deformable film and one surface of the high-reflection film, which is far away from the first optical fiber, are bonded through epoxy resin, and the high-reflection film and the first optical fiber are bonded through the epoxy resin.
The invention has the following technical effects:
when the wheel body of the crane passes through the position of the detection mechanism, the track deforms, the deformation die attached to the track surface deforms along with the track, the first optical fiber displaces along with the deformation die, the reflected light changes along with the displacement of the first optical fiber, the intensity of the reflected light reflected to the second optical fiber changes, the optical signal received by the photoelectric detector changes, the electric signal collected by the acquisition card changes along with the displacement of the first optical fiber, the deformation of the track is obtained through the change of the electric signal, and the pressure value of the wheel body of the crane is obtained by combining the compressive strength of the track. The crane wheel body is in good contact with the track in the operation process by arranging the detection mechanism on the side face of the track, so that the stable operation of the crane is ensured.
By increasing the length of the first optical fiber, the length of the second optical fiber is reduced, so that the detection precision is improved.
Through the setting of high reflectance coating, the reflection intensity of reinforcing first optic fibre bonds high reflectance coating and the light transmissivity of first optic fibre reinforcing reflection light through epoxy to increase the precision of testing result.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side view of the structure of FIG. 1;
fig. 3 is a schematic structural diagram of the detection mechanism.
Wherein, 1 is a wheel body, 2 is a track, 3 is a detection mechanism, 301 is a shell, 302 is a deformation film, 303 is a high reflective film, 304 is a first optical fiber, 3041 is a first optical fiber end face, 305 is a second optical fiber, 3051 is a second optical fiber end face, 4 is a three-port circulator, 5 is a light source, 6 is a photoelectric detector, and 7 is a collection card.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1-3, the present invention provides a device for testing wheel pressure based on optical fiber, including a wheel body 1, a track 2 disposed below the wheel body 1, and a detection mechanism 3 disposed on a side surface of the track 2;
the detection mechanism 3 comprises a shell 301, a deformation film 302 arranged at the opening end of the shell 301 and an optical fiber assembly arranged in the shell 301; the optical fiber assembly comprises a first optical fiber 304 arranged on the inner side wall of the deformable membrane 302 and a second optical fiber 305 arranged through the closed end of the shell 301, the first optical fiber 304 and the second optical fiber 305 are coaxially arranged, and a high-reflectivity membrane 303 is arranged between the first optical fiber 304 and the deformable membrane 302;
the second optical fiber 305 is connected with a three-port circulator 4, the three-port circulator 4 is connected with a light source 5 and a photoelectric detector 6, a transceiving multiplexing end of the three-port circulator 4 is connected with the second optical fiber 305, an output end of the three-port circulator 4 is connected with an input end of the photoelectric detector 6, an input end of the three-port circulator 4 is connected with an output end of the light source 5, and an output end of the photoelectric detector 6 is connected with a collection card 7. When the wheel pressure of the crane is measured, the deformation die 302 is attached to the side surface of the rail 2, the side wall of the shell 301 is flush with the upper surface of the rail 2, continuous light output by the light source 1 enters the three-port circulator 4 and enters the second optical fiber 305, the continuous light emitted by the light source 4 enters the second optical fiber end face 3051 through the second optical fiber 305 and is emitted, light emitted from the second optical fiber end face 3051 enters the first optical fiber end face 3041 and is continuously transmitted, the light is transmitted to the high-reflection film 303 through the first optical fiber 304 and returns to the first optical fiber end face 3041 through the high-reflection film 303 and is received by the second optical fiber 305, the reflected light enters the photoelectric detector 6 through the output end of the three-port circulator 4, and the photoelectric detector 6 converts an optical signal into an electric signal which is then collected by the collection card 7. When the wheel body 1 of the crane passes through the position of the detection mechanism 3, the track 2 deforms, the deformation die 302 attached to the secondary surface of the track 2 deforms along with the track 2, the first optical fiber 304 displaces along with the deformation die, reflected light changes along with the displacement of the first optical fiber 304, so that the intensity of the reflected light reflected to the second optical fiber 305 changes, optical signals received by the photoelectric detector 8 change, electric signals collected by the acquisition card 7 change along with the displacement of the first optical fiber 304, the deformation of the track 2 is obtained through the change of the electric signals, and the pressure value of the wheel body 1 of the crane is obtained through calculation in combination with the compressive strength of the track 2. The crane wheel body 1 is in good contact with the track 2 in the operation process by arranging the detection mechanism 3 on the side surface of the track 2, so that the stable operation of the crane is ensured.
In a further optimized scheme, the first optical fiber 304 is provided with a first optical fiber end face 3041, the second optical fiber 305 is provided with a second optical fiber end face 3051, the first optical fiber end face 3041, the second optical fiber end face 3051 and the deformation film 302 are arranged in parallel, and a gap is reserved between the first optical fiber end face 3041 and the second optical fiber end face 3051. By increasing the length of the first optical fiber 304, the length of the second optical fiber 305 is reduced, thereby improving the accuracy of detection.
In a further optimized scheme, the light source 1 is a single-wave light source, and the first optical fiber 304 and the second optical fiber 305 are graded-index multimode optical fibers.
According to a further optimized scheme, the deformation film 302 is a PET film, the thickness of the deformation film 302 is 0.2mm, and the diameter of the deformation film 302 is the same as the outer diameter of the shell 301.
In a further optimized scheme, the high-reflection film 303 is a total station reflector plate.
According to the further optimized scheme, the inner side surface of the deformation film 302 is bonded with one surface of the high-reflection film 303, which is far away from the first optical fiber 304, through epoxy resin, and the high-reflection film 303 is bonded with the first optical fiber 304 through epoxy resin. The high-reflection film 303 is arranged to enhance the light reflection strength of the first optical fiber 304, and the high-reflection film 303 and the first optical fiber 304 are bonded by epoxy resin to enhance the light transmittance of the reflected light, so that the accuracy of the detection result is increased.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (6)
1. The utility model provides a device based on optic fibre test wheel is pressed which characterized in that: comprises a wheel body (1), a track (2) arranged below the wheel body (1) and a detection mechanism (3) arranged on the side surface of the track (2);
the detection mechanism (3) comprises a shell (301), a deformation membrane (302) arranged at the opening end of the shell (301), and an optical fiber assembly arranged in the shell (301); the optical fiber assembly comprises a first optical fiber (304) arranged on the inner side wall of the deformation film (302) and a second optical fiber (305) arranged through the closed end of the shell (301), the first optical fiber (304) and the second optical fiber (305) are coaxially arranged, and a high-reflectivity film (303) is arranged between the first optical fiber (304) and the deformation film (302);
the second optical fiber (305) is connected with a three-port circulator (4), the three-port circulator (4) is connected with a light source (5) and a photoelectric detector (6), the transceiving multiplexing end of the three-port circulator (4) is connected with the second optical fiber (305), the output end of the three-port circulator (4) is connected with the input end of the photoelectric detector (6), the input end of the three-port circulator (4) is connected with the output end of the light source (5), and the output end of the photoelectric detector (6) is connected with a collection card (7).
2. The optical fiber based wheel pressure testing device according to claim 1, wherein: the first optical fiber (304) is provided with a first optical fiber end face (3041), the second optical fiber (305) is provided with a second optical fiber end face (3051), the first optical fiber end face (3041), the second optical fiber end face (3051) and the deformation film (302) are arranged in parallel, and a space is reserved between the first optical fiber end face (3041) and the second optical fiber end face (3051).
3. The optical fiber based wheel pressure testing device according to claim 1, wherein: the light source (1) is a single-wave light source, and the first optical fiber (304) and the second optical fiber (305) are graded-index multimode optical fibers.
4. The optical fiber based wheel pressure testing device according to claim 1, wherein: the deformation membrane (302) is a PET membrane, the thickness of the deformation membrane (302) is 0.2mm, and the diameter of the deformation membrane (302) is the same as the outer diameter of the shell (301).
5. The optical fiber based wheel pressure testing device according to claim 1, wherein: the high-reflection film (303) is a total station reflector plate.
6. The optical fiber based wheel pressure testing device according to claim 1, wherein: the inner side surface of the deformation film (302) is bonded with one surface, far away from the first optical fiber (304), of the high-reflection film (303) through epoxy resin, and the high-reflection film (303) is bonded with the first optical fiber (304) through the epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011108527.8A CN112284585B (en) | 2020-10-16 | 2020-10-16 | Device based on optical fiber testing wheel pressure |
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| CN202011108527.8A CN112284585B (en) | 2020-10-16 | 2020-10-16 | Device based on optical fiber testing wheel pressure |
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| CN112284585B CN112284585B (en) | 2022-03-08 |
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Effective date of registration: 20240527 Address after: 510663 No.9, Keke Road, Huangpu District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Special Equipment Testing and Research Institute (Guangzhou Special Equipment Accident Investigation Technology Center Guangzhou Elevator Safety Operation Monitoring Center) Country or region after: China Address before: No. 65, Liurong Road, Yuexiu District, Guangzhou, Guangdong 510063 Patentee before: GUANGZHOU ACADEMY OF SPECIAL EQUIPMENT INSPECTION & TESTING Country or region before: China |