CN102322792B - Concrete pole rebar quality tester and detection method by using tester - Google Patents
Concrete pole rebar quality tester and detection method by using tester Download PDFInfo
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- CN102322792B CN102322792B CN201110212508.4A CN201110212508A CN102322792B CN 102322792 B CN102322792 B CN 102322792B CN 201110212508 A CN201110212508 A CN 201110212508A CN 102322792 B CN102322792 B CN 102322792B
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Abstract
The invention relates to a concrete pole rebar quality tester and a detection method by using the tester. The tester is composed of a fixed stand, an exciter, a rotary encoder, a cell box, a signal preprocessor, an ARM (analog digital conversion) processor, a magnet measuring element and the like, wherein the fixed stand can be sheathed on a concrete pole to be tested, and the magnet measuring element and the exciter are installed together. When the concrete pole rebar quality tester is used for detection, the fixed stand is tightly sheathed on the concrete pole to be tested; the clip of the cell box is clamped on the belt of an inspector; the exciter magnetizes the rebar to generate back magnetic flux; the magnet measuring element measures the back magnetic flux passing through an armature; and the back magnetic flux is relevant to the diameter, the amount, the position, the corrosion and the like of the rebar, i.e. the back magnetic flux is converted into an electrical signal, is amplified, filtered and the like by the signal preprocessor, is subjected to analog digital conversion by the ARM processor and is analyzed to obtain a parameter which needs to be detected. The tester disclosed by the invention is simple to manufacture and is convenient to operate, the rebar in the concrete pole can be detected, the diameter, the position, the amount and the corrosion degree of the rebar can be accurately judged, and the detection method is scientific and reasonable.
Description
Technical field
The present invention relates to a kind of technology that bar diameter in cement pole, quantity, position, etching extent are carried out to Non-Destructive Testing.
Background technology
Cement shaft tower is the important supporting member of transmission line of electricity, is mainly used in low-voltage circuit, and its function is that support wire is grown apart from transmission of electric energy.Owing to being a link in electric power transfer, once cement pole fracture gently causes large-area power-off, cause economic loss, heavy cause great personal injury.In the national snow disaster of impact in 2008, just exposed the serious quality problems of some low pressure cement shaft towers, these problems comprise: bar diameter is inadequate, and quantity is inadequate, and position is defective, and seriously corroded.
Reinforcing bar is the skeleton of cement shaft tower, there are strict country and industry standard to carry out the manufacture of standard cement shaft tower, use and change, but because illegal retailer uses inferior materials and turns out substandard goods, a large amount of underproof cement shaft towers are distributed in each corner of power circuit, as summer in 2009, Wuhan City's more than 10 root cement shaft towers that fractureed continuously, caused large-area power failure, find, the bar diameter in the cement shaft tower fractureing does not also have chopsticks thick afterwards.Also there is not having the situation of a reinforcing bar in the cement pole that some mountain areas fracture.Qinghe, recent Beijing little Ying electric pole lodging event, again for cement pole safety problem is sounded the alarm.
Therefore electric power safety is related to people's production and life, is even related to national security, and it is very significant designing a kind of instrument and method that can detect bar diameter in cement shaft tower, quantity, position, corrosion.
At present, the invention and the instrument that also for the bar diameter in cement shaft tower, position, quantity and corrosion, do not detect both at home and abroad.Similar typical patent comprises reinforced bar detection instrument > > (200820064254.X) in the patent < < house crack fracture after earthquake hazard detecting for reinforcing bar in house, comprise digital camera, pinhole cameras, optical fiber, wherein, digital camera does not possess common camera lens; One end of optical fiber is connected to the top of digital camera, and the other end is connected with pinhole cameras.During use, pinhole cameras is inserted in the crack fracture in house, the image that optical fiber obtains pinhole cameras imports digital camera into, amplify, dwindle and take, photographic images in time, obtain easily image scene data, be specially adapted to the reinforcing bar in house crack fracture after earthquake hazard to detect.
The patent < < detecting for the reinforcing bar in concrete component has the reinforced bar detection instrument > > (85105082) of high-resolution probe, adopt resonance bridge as sensor, two involutory tank shape magnetic cores for the upper inductance of resonance bridge, realize magnetic loop totally-enclosed, reduced external magnetic field interference.The lower inductance of electric bridge has several coils with magnetic core, has improved the resolution characteristic of sensor.Also adopt micro-computer technology and digital circuit technique, lcd technology, easy and simple to handle.
But the reinforcing bar that foregoing invention and device all can not be directly used in cement pole detects.
Summary of the invention
The object of the invention is for above-mentioned present situation, aim to provide a kind of manufacture simple, easy to operate, can be used for detecting the quality detector for steel bars in concrete pole of diameter at the reinforcing bar with in cement pole, quantity, position, etching extent and by the method for its detection.
The implementation of the object of the invention is, quality detector for steel bars in concrete pole, first support consists of two and half circles, by two bearing pins, form a whole circle, outside it, have tooth, second support consists of two and half circles, by two snap closes, is connected as one, four contiguous blocks link together upper bracket and lower carriage, form a whole fixed support.
Detecting bearing is contained on upper bracket, the external toothing engagement of the pinion wheel in detection bearing and upper bracket, the several bearings that detect in bearing are stuck in the annular groove of upper bracket, magnetizing exciter is fixed on upper bracket by web joint, rotary encoder is contained on magnetizing exciter, surveying magnetic cell is arranged on the armature of magnetizing exciter, detect on bearing handle is housed, survey the signal wire of magnetic cell and the signal wire of rotary encoder and connect signal preprocessor, the output signal line of signal preprocessor is connected with arm processor, on arm processor, have LCD display, arm processor connects battery case.
The method detecting with quality detector for steel bars in concrete pole, concrete steps are as follows:
1) fixed support is sleeved on cement pole to be measured, and is locked by bearing pin, snap close, and the clamp of battery case is stuck on belt, and belt is fixed on testing staff's body, and detector is battery-powered,
2) cement pole periphery to be measured is over against magnetizing exciter and survey magnetic cell, by handle, rotated and detected bearing, the gear ring on gear and fixed support is done gear motion, drives magnetizing exciter, survey magnetic cell and rotary encoder to rotate around cement pole, make the direction of magnetization of magnetizing exciter and the axis of cement pole parallel
3) magnetizing exciter magnetizes the reinforcing bar in cement pole to be measured, and magnet steel, armature, air and reinforcing bar form magnetic loop, and the survey magnetic cell being fixed in armature is measured the magnetic flux that returns passing through in armature, and will return magnetic flux signal and be converted to electric signal,
4) the electric signal inlet signal pretreater that contains back magnetic flux information, amplifies, filtering processes, and sends into arm processor;
5) arm processor, to the signal mode number conversion, the analysis that obtain, obtains diameter, position, quantity and the corrosion condition data of reinforcing bar, storage, and shown by LCD display.
The present invention is magnetized the reinforcing bar array in cement pole to be measured by magnetizing exciter, and magnet steel, armature, air and reinforcing bar form magnetic loop, surveys magnetic cell and measures the magnetic flux that returns passing through in armature, and will return magnetic flux signal and be converted to electric signal; Through signal preprocessor amplification, filtering, then through arm processor mould/number conversion, after analysis, obtain the parameter that needs detection.And then one that analytical structure is presented to LCD is upper, two realize the storage of data, and three realize the communication with host computer.
Detector manufacture of the present invention is simple, easy to operate, can the reinforcing bar in cement pole be detected, and can accurately judge the degree of bar diameter, position, quantity and corrosion, and detection method is scientific and reasonable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention,
Fig. 2 is fixing rack structure figure,
Fig. 3 detects seat structure figure,
Fig. 4 is magnetizing exciter structural drawing,
Fig. 5 is armature and survey magnetic cell structural drawing,
Fig. 6 is power supply architecture figure,
Fig. 7 is arm processor structural drawing
Embodiment
Detector of the present invention forms by being enclosed within fixed support 1, magnetizing exciter 4, rotary encoder 5, battery case and the survey magnetic cell being installed together with magnetizing exciter 4 on cement pole 2 to be measured, signal preprocessor, arm processor etc.
The present invention is described in detail in detail with reference to the accompanying drawings.
With reference to Fig. 1, the fixed support 1 of detector is sleeved on cement pole 2; Magnetizing exciter 4 is fixed on and is detected on bearing 12 by web joint 9.Rotary encoder 5 is contained on magnetizing exciter, survey magnetic cell be arranged on magnetizing exciter armature on.Detect on bearing handle 11 is housed.Survey the signal wire 7 of magnetic cell and the signal wire 6 of rotary encoder and connect signal preprocessor 8, the output signal line 10 of signal preprocessor connects arm processor.Battery case 13 is stuck on belt 14 by clamp below, and battery case connects arm processor 16 by power lead 15.
The signal condition module of existing processing module ，Ru NI company for signal preprocessor of the present invention, arm processor is used the HHARM9328MXL-Integration-R2 of existing processor ，Ru Huaheng company.Battery, rotary encoder adopt conventional finished product.Survey magnetic cell and adopt conventional finished product, as Hall element, inductive coil etc.
The signal wire 7 of survey magnetic cell and the signal wire 6 of rotary encoder 5 that are installed together with magnetizing exciter 4 connect signal preprocessor 8, and the output signal line 10 of signal preprocessor connects arm processor 16, and arm processor connects battery case 13.
With reference to Fig. 2, first support 17 consists of two and half circles, by two bearing pins 18, forms a whole circle.Outside it, there is tooth 19.Second support 20 consists of two and half circles, by two snap closes 22, is connected as one, and four contiguous blocks 23 link together upper bracket and lower carriage, forms a whole fixed support 1.
With reference to Fig. 1,2, detect bearing 12 and be contained on upper bracket 17, the magnetizing exciter 4 being connected with rotary encoder 5 is fixed on upper bracket by web joint 9.
With reference to Fig. 3, the wheel shaft that detects the pinion wheel 25 in bearing is fixed on two pinion stands 26, and pinion stand 26 is fixed on and detects on bearing housing 24, and the rotating shaft 28 of several bearings 27 is fixed on and detects on bearing housing 24, and bearing is 28 rotations around the shaft.
With reference to Fig. 1,2,3, the external toothing engagement of the pinion wheel in detection bearing and upper bracket, the several bearings that detect in bearing are stuck in the annular groove of upper bracket.Detect bearing and rotate around pinion wheel, and can not deviate from.
With reference to Fig. 4, armature 31 and two blocks of magnet steel 32 force together and are fixed in the groove of magnetizing exciter housing 33, and the upper surface of armature 31 is concordant with groove upper surface, and cover plate 30 is fixed together and is become magnetizing exciter 4 by screw 29 with magnetizing exciter housing 33.
With reference to Fig. 5, armature 31 use permeability magnetic materials are made, and there is square opening centre, and square opening is greater than along the size of armature 31 length directions the thickness of surveying magnetic cell 34; Survey magnetic cell 34, as Hall element and inductive coil etc. is fixed in the square hole of armature 31, surveys magnetic cell two ends and posted rectangular sheet 35 use permeability magnetic materials or non-magnet material formation.If the magnetic flux that forms back too a little less than, use the rectangular sheet of permeability magnetic material to be attached to the two sides of surveying magnetic cell 34; If formed time magnetic field is too strong, use the rectangular sheet of non-magnet material to be attached to the two sides of surveying magnetic cell 34.Armature 31 both sides are fluted, are used for strengthening back magnetic flux and improve detection sensitivity, according to the actual conditions that detect, fill the magnetic inductive block 36 of different size in groove.
With reference to Fig. 6, battery 37 is contained in battery case 13, has the clamp being stuck on belt 14 after battery case 13.Belt 14 links together through clamp and battery case 13.Battery is outwards powered by power lead 15, and belt is fixed on testing staff's body.
With reference to Fig. 7, power lead 15 connects battery, to signal, processes and monitor power supply, and signal wire 10 connects arm processor 16, and the signal after processing is presented in the LCD display of arm processor, also can store, and the communication of realization and host computer.
The method detecting with quality detector for steel bars in concrete pole, concrete steps are as follows:
1) fixed support 1 is sleeved on cement pole 2 to be measured, and is locked by bearing pin 18, snap close 22, and the clamp of battery case 39 is stuck on belt 41, and belt is fixed on testing staff's body, and detector is powered by battery 38,
2) cement pole periphery to be measured is over against magnetizing exciter 4 and survey magnetic cell, by handle 11, rotate and detect bearing, gear ring on gear and fixed support is done gear motion, drive magnetizing exciter 4, survey magnetic cell and rotary encoder 5 to rotate around cement pole, make the direction of magnetization of magnetizing exciter and the axis of cement pole parallel
3) magnetizing exciter magnetizes the reinforcing bar in cement pole to be measured, and magnet steel, armature, air and reinforcing bar form magnetic loop, and the survey magnetic cell being fixed in armature is measured the magnetic flux that returns passing through in armature, and will return magnetic flux signal and be converted to electric signal,
4) the electric signal inlet signal pretreater that contains back magnetic flux information, amplifies, the processing such as filtering, sends into arm processor;
5) arm processor, to the signal mode number conversion obtaining, under the support of analysis software, to the signal analysis obtaining, obtains diameter, position, quantity and the corrosion condition data of reinforcing bar, storage, and shown by LCD display.
The surface of cement pole to be measured of the present invention is over against magnetizing exciter, and the magnetizing field direction of magnetizing exciter is parallel with cement pole axis; Magnetizing exciter magnetizes the reinforcing bar array in cement pole to be measured, and magnet steel, armature, air and reinforcing bar form magnetic loop, and the survey magnetic cell being fixed in armature is measured the magnetic flux that returns passing through in armature, and will return magnetic flux signal and be converted to electric signal; The electric signal that contains back magnetic flux information is through signal preprocessor amplification, filtering etc., then through arm processor analog to digital conversion, through software analysis, one is presented at LCD above by analytical structure, and two realize the storage of data, the communication of three realizations and host computer; Bar diameter, quantity, position, corrosion etc. will affect back the value of magnetic flux, and the value of analyzing back magnetic flux can obtain the parameter that needs detection.
Claims (4)
1. quality detector for steel bars in concrete pole, it is characterized in that first support consists of two and half circles, by two bearing pins, form a whole circle, outside it, there is tooth, second support consists of two and half circles, by two snap closes, connected as one, four contiguous blocks link together upper bracket and lower carriage, form a whole fixed support;
Detecting bearing is connected with upper bracket by gear, the external toothing engagement of the pinion wheel in detection bearing and upper bracket, the several bearings that detect in bearing are stuck in the annular groove of upper bracket, magnetizing exciter is fixed on and is detected on bearing by web joint, rotary encoder is contained on magnetizing exciter, surveying magnetic cell is arranged on the armature of magnetizing exciter, detect on bearing handle is housed, survey the signal wire of magnetic cell and the signal wire of rotary encoder and connect signal preprocessor, the output signal line of signal preprocessor is connected with arm processor, on arm processor, there is LCD display, arm processor connects battery case,
Described armature is made with permeability magnetic material, and there is square hole centre, surveys magnetic cell and is fixed in square hole, and surveying magnetic cell both ends of the surface has rectangular sheet, and rectangular sheet is made with permeability magnetic material or non-magnet material; Armature both sides are fluted, fill the magnetic inductive block of the different size of being made by permeability magnetic material in groove;
Described magnetizing exciter is that armature and two blocks of magnet steel force together and are fixed in the groove of magnetizing exciter housing, and the upper surface of armature is concordant with groove upper surface, the magnetizing exciter becoming together with cover plate is fixed by screws in magnetizing exciter housing.
2. quality detector for steel bars in concrete pole according to claim 1, the pinion wheel (25) that it is characterized in that detecting on bearing is connected with detection bearing housing (24) by bearing seat (26), and bearing (27) is connected with detection bearing housing (24) by rotating shaft (28).
3. quality detector for steel bars in concrete pole according to claim 1, is characterized in that battery (37) is arranged in battery case (16), has the clamp being stuck on belt (14) after battery case.
4. the method detecting with quality detector for steel bars in concrete pole claimed in claim 1, is characterized in that concrete steps are as follows:
1) fixed support is sleeved on cement pole to be measured, and is locked by bearing pin, snap close, and the clamp of battery case is stuck on belt, and belt is fixed on testing staff's body, and detector is battery-powered,
2) cement pole periphery to be measured is over against magnetizing exciter and survey magnetic cell, by handle, rotated and detected bearing, the gear ring on gear and fixed support is done gear motion, drives magnetizing exciter, survey magnetic cell and rotary encoder to rotate around cement pole, make the direction of magnetization of magnetizing exciter and the axis of cement pole parallel
3) magnetizing exciter magnetizes the reinforcing bar in cement pole to be measured, and magnet steel, armature, air and reinforcing bar form magnetic loop, and the survey magnetic cell being fixed in armature is measured the magnetic flux that returns passing through in armature, and will return magnetic flux signal and be converted to electric signal,
4) the electric signal inlet signal pretreater that contains back magnetic flux information, amplifies, filtering processes, and sends into arm processor;
5) arm processor, to the signal mode number conversion, the analysis that obtain, obtains diameter, position, quantity and the corrosion condition data of reinforcing bar, storage, and shown by LCD display.
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| CN201110212508.4A CN102322792B (en) | 2011-07-28 | 2011-07-28 | Concrete pole rebar quality tester and detection method by using tester |
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| CN201110212508.4A CN102322792B (en) | 2011-07-28 | 2011-07-28 | Concrete pole rebar quality tester and detection method by using tester |
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| CN110161114B (en) * | 2019-06-14 | 2023-08-18 | 北京海创高科科技有限公司 | Reinforced concrete detection method, device and system based on support vector machine |
| CN113108680B (en) * | 2021-04-12 | 2022-11-25 | 浙江捷安工程有限公司 | Method for judging position of main rib in cement pole based on magnetic field intensity change |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101329304A (en) * | 2008-07-24 | 2008-12-24 | 东南大学 | Modularization excitation detection device |
| CN101793869A (en) * | 2008-12-24 | 2010-08-04 | 码科泰克株式会社 | Eddy-current testing method and eddy-current testing device |
| CN202204463U (en) * | 2011-07-28 | 2012-04-25 | 刘天宜 | Quality detector for steel bars in concrete pole |
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| JP5401110B2 (en) * | 2008-02-04 | 2014-01-29 | 東京理学検査株式会社 | Position measurement method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101329304A (en) * | 2008-07-24 | 2008-12-24 | 东南大学 | Modularization excitation detection device |
| CN101793869A (en) * | 2008-12-24 | 2010-08-04 | 码科泰克株式会社 | Eddy-current testing method and eddy-current testing device |
| CN202204463U (en) * | 2011-07-28 | 2012-04-25 | 刘天宜 | Quality detector for steel bars in concrete pole |
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| JP特开2009-210566A 2009.09.17 |
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