CN203480037U - Vibration frequency receiving apparatus for rapid detection of looseness of bolt in iron tower - Google Patents
Vibration frequency receiving apparatus for rapid detection of looseness of bolt in iron tower Download PDFInfo
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- CN203480037U CN203480037U CN201320623908.9U CN201320623908U CN203480037U CN 203480037 U CN203480037 U CN 203480037U CN 201320623908 U CN201320623908 U CN 201320623908U CN 203480037 U CN203480037 U CN 203480037U
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- 238000001514 detection method Methods 0.000 title abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract 14
- 229910052742 iron Inorganic materials 0.000 title abstract 7
- 238000004891 communication Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000003321 amplification Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000010358 mechanical oscillation Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model relates to the field of quality detection of iron tower assembly, and especially realizes to a vibration frequency receiving apparatus for rapid detection of looseness of bolts in an iron tower. The vibration frequency receiving apparatus is characterized by comprising a sound wave receiving unit, signal recording and storing unit, and a high-frequency bandpass amplification unit, wherein the sound wave receiving unit is sequentially connected with the signal recording and storing unit, the high-frequency bandpass amplification unit, an amplitude-limiting amplifier circuit, a counting circuit and a digital display unit; and the signal recording and storing unit performs data communication with a computer waveform display system. Compared with the prior art, the beneficial effects are that the vibration frequency receiving apparatus adopts the sound wave detection technology and performs rapid detection after the assembly of the iron tower, is rapid in detection, saves a large amount of manpower and material resources, does not need to climb the iron tower for detection; and with one comprehensive detection, the vibration frequency receiving apparatus can, through analyzing the sound wave data, directly tell whether the bolts in the iron tower are loose or not, and satisfies the requirements of efficiency and accuracy of the iron tower detection.
Description
Technical field
The utility model relates to steel tower assembling quality detection field, particularly a kind of fast detecting of steel tower bolt looseness vibration frequency receiving trap.
Background technology
How with bolts the assembling of steel tower is generally, the installation quality of bolt is most important, because bolt quantity is many, detect and to get up to take a lot of work consuming time, detected steel tower assembling when whether qualified in the past, management personnel need to climb up steel tower, check one by one whether every angle bar and each bolt meet the requirements, such inspection workload is large, easily undetected, is difficult to guarantee to detect quality.
Summary of the invention
The purpose of this utility model is to provide a kind of fast detecting vibration frequency receiving trap of steel tower bolt looseness, adopt acoustic sounding technology, after steel tower has been assembled, carry out fast detecting, by analyzing sonic data, intuitively reflect that steel tower bolt has non-loosening phenomenon, meet the requirement that steel tower detects.
For achieving the above object, the technical solution of the utility model is:
The fast detecting of steel tower bolt looseness vibration frequency receiving trap, comprise sound wave receiving element, signal record storage unit and high-frequency band pass amplifying unit, sound wave receiving element is connected with signal record storage unit, high-frequency band pass amplifying unit, amplitude limiting amplifier circuit, counting circuit and digital display unit successively, and signal record storage unit and computing machine wave shape display system carry out data communication.
Compared with prior art, the beneficial effects of the utility model are:
Adopt acoustic sounding technology, after having assembled, steel tower carries out fast detecting, have advantages of that detection speed is fast, save a large amount of man power and materials, do not need to step on tower detection, through a complete detection, can be by analyzing sonic data, intuitively reflect that steel tower bolt has non-loosening phenomenon, meet the efficiency of steel tower detection and the requirement of accuracy rate.
Accompanying drawing explanation
Fig. 1 is the utility model example structure schematic diagram;
Fig. 2 is that the utility model embodiment is for the schematic diagram of steel tower detected state;
Fig. 3 is the mechanical oscillation source structure schematic diagram in the utility model embodiment;
Fig. 4 is that the vibration frequency in the utility model embodiment receives oscillogram;
Fig. 5 is the oscillogram of amplifying through high-frequency band pass in the utility model embodiment;
Fig. 6 is the oscillogram after amplitude limit slicing in the utility model embodiment.
In Fig. 2: the bolt 3-vibration frequency receiving trap 4-mechanical oscillation source that 1-steel tower 2-is loosening
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
See Fig. 1, it is the utility model vibration frequency receiving trap example structure schematic diagram, comprise sound wave receiving element, signal record storage unit and high-frequency band pass amplifying unit, sound wave receiving element is connected with signal record storage unit, high-frequency band pass amplifying unit, amplitude limiting amplifier circuit, counting circuit and digital display unit successively, and signal record storage unit and computing machine wave shape display system carry out data communication.
Sound wave receiving element mainly completes the conversion of sound/electricity, recorded voice signal, complete on-the-spot data acquisition, playback recorded audio signals can show for computing machine wave shape display system, observing waveform judges, can also judge by the number of the higher harmonic components in vibration wave, in figure, show a complete waveform, there is vibrating area and vibration damping district.The effect that high-frequency band pass amplifies is to remove low frequency signal, the waveform (low frequency wave) that namely vibrating motor produces, and its energy is large, and amplitude is large, can disturb the waveform (high frequency waves) of loose bolts generation of vibration.Amplitude limiting amplifier circuit is that the different signal of amplitude is become to the rectangle square wave that amplitude is identical, and counting is more accurate in this way.
See Fig. 2, that the utility model embodiment is for the schematic diagram of steel tower detected state, the utility model makes steel tower 1 produce vibration by additional mechanical oscillation source 4, loosening bolt 2 and tower material parts are excited to occur resonance or vibration, produce secondary impact sound, by vibration frequency receiving trap 3, sound wave is received and is transformed into electric signal, by two kinds of methods, electric signal is analyzed, the one, demonstrate sound waveform, by observing waveform, carry out wave form analysis; The 2nd, by the method for counting, by numerical value, to analyze, thereby determine on steel tower whether have loosening bolt fast, specific implementation comprises three steps:
1) select swinging vibrating motor as mechanical oscillation source, motor oscillating frequency is adjustable within the scope of 5～10mm at 6～25Hz, amplitude, after steel tower has been assembled, 1200mm～2000mm the place, a lower margin king-post top that vibrating motor is arranged on to steel tower, above the offside lower margin king-post of vibrating motor place king-post, 1200mm～2000mm place is provided with a vibration frequency receiving trap;
2) Vibration on Start-up motor, by boost button and step-down button, adjust the rotating speed of vibrating motor, change vibration frequency, when amplitude displayed value is maximum, stop vibrating motor, so repeatedly press the start-stop button of vibrating motor, vibration frequency receiving trap is constantly transformed into electric signal by the sound wave of reception, carries out signal record and storage, be stored in electronic chip, so that analytical test result is used;
3) data analysis system is analyzed the acoustic signals after processing, acoustic signals is amplified through high-frequency band pass, remove or reduce the motor oscillating frequency that frequency is lower, the frequency that the bolt that amplification frequency is higher clashes into, amplitude limiting amplifier circuit becomes just profound ripple signal into square-wave signal, for counting circuit provides count signal, then demonstrate by number the frequency number that high frequency clashes into.
See Fig. 3, described mechanical oscillation source, comprise the portable structure that DC eccentric motor and variable voltage output module form, DC eccentric motor is connected with direct supply with HF switch through variable voltage output module successively, high frequency conduction and cut-off time controller is connected with HF switch, and high frequency conduction and cut-off time controller is provided with boost button, start-stop button and step-down button.Variable voltage output module is used for changing the supply voltage of DC eccentric motor, by the mode of HF switch, reduces the loss of electric energy, raises the efficiency.
Seeing Fig. 4, is that in embodiment, vibration frequency receives oscillogram, mainly contains vibrating motor waveform and bolt vibrational waveform, and the amplitude of wave form that vibrating motor produces is large, frequency is lower, and the waveform frequency of bolt generation of vibration is higher, amplitude is less.
See Fig. 5, the oscillogram of amplifying through high-frequency band pass in embodiment, after high-frequency band pass amplifying unit, vibrating motor waveform frequency low (low frequency wave), within the scope of band resistance, is attenuated, and amplitude diminishes; The frequency high (high frequency waves) of bolt vibrational waveform, in the logical scope of band between upper amplitude limit line and lower amplitude limit line, is exaggerated, and it is large that amplitude becomes.The principal ingredient of waveform is high-frequency signal, namely the waveform of bolt generation of vibration.
See Fig. 6, the oscillogram in embodiment after amplitude limit slicing, above-mentioned signal is after amplitude limit slicing, after part beyond upper amplitude limit line and lower amplitude limit line is reamed, waveform belongs to square wave substantially, for counting circuit provides qualified signal, by the numerical value of counter, the frequency that can judge the shock number of times generation of bolt vibration strike note, numerical value is larger, and loosening bolt is more, numerical value is less, bolt looseness is less, on this basis, reflects the actual conditions of steel tower bolted.
Claims (1)
1. the fast detecting of steel tower bolt looseness vibration frequency receiving trap, it is characterized in that, comprise sound wave receiving element, signal record storage unit and high-frequency band pass amplifying unit, sound wave receiving element is connected with signal record storage unit, high-frequency band pass amplifying unit, amplitude limiting amplifier circuit, counting circuit and digital display unit successively, and signal record storage unit and computing machine wave shape display system carry out data communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320623908.9U CN203480037U (en) | 2013-10-10 | 2013-10-10 | Vibration frequency receiving apparatus for rapid detection of looseness of bolt in iron tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320623908.9U CN203480037U (en) | 2013-10-10 | 2013-10-10 | Vibration frequency receiving apparatus for rapid detection of looseness of bolt in iron tower |
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| Publication Number | Publication Date |
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| CN203480037U true CN203480037U (en) | 2014-03-12 |
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| CN201320623908.9U Expired - Fee Related CN203480037U (en) | 2013-10-10 | 2013-10-10 | Vibration frequency receiving apparatus for rapid detection of looseness of bolt in iron tower |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291716A (en) * | 2015-05-12 | 2017-01-04 | 宽仕工业股份有限公司 | Bolt gets loose and detects device and detection method thereof |
| US9695761B2 (en) | 2015-03-11 | 2017-07-04 | General Electric Company | Systems and methods to distinguish engine knock from piston slap |
| US9752949B2 (en) | 2014-12-31 | 2017-09-05 | General Electric Company | System and method for locating engine noise |
| US9784635B2 (en) | 2015-06-29 | 2017-10-10 | General Electric Company | Systems and methods for detection of engine component conditions via external sensors |
| US9784231B2 (en) | 2015-05-06 | 2017-10-10 | General Electric Company | System and method for determining knock margin for multi-cylinder engines |
| US9791343B2 (en) | 2015-02-12 | 2017-10-17 | General Electric Company | Methods and systems to derive engine component health using total harmonic distortion in a knock sensor signal |
| US9803567B2 (en) | 2015-01-07 | 2017-10-31 | General Electric Company | System and method for detecting reciprocating device abnormalities utilizing standard quality control techniques |
| US9874488B2 (en) | 2015-01-29 | 2018-01-23 | General Electric Company | System and method for detecting operating events of an engine |
| US9897021B2 (en) | 2015-08-06 | 2018-02-20 | General Electric Company | System and method for determining location and value of peak firing pressure |
| US9903778B2 (en) | 2015-02-09 | 2018-02-27 | General Electric Company | Methods and systems to derive knock sensor conditions |
| US9915217B2 (en) | 2015-03-05 | 2018-03-13 | General Electric Company | Methods and systems to derive health of mating cylinder using knock sensors |
| US9933334B2 (en) | 2015-06-22 | 2018-04-03 | General Electric Company | Cylinder head acceleration measurement for valve train diagnostics system and method |
| US10001077B2 (en) | 2015-02-19 | 2018-06-19 | General Electric Company | Method and system to determine location of peak firing pressure |
| US10393609B2 (en) | 2015-07-02 | 2019-08-27 | Ai Alpine Us Bidco Inc. | System and method for detection of changes to compression ratio and peak firing pressure of an engine |
| CN111175378A (en) * | 2020-01-21 | 2020-05-19 | 河海大学 | Method for rapidly detecting bolt tension |
| US10760543B2 (en) | 2017-07-12 | 2020-09-01 | Innio Jenbacher Gmbh & Co Og | System and method for valve event detection and control |
-
2013
- 2013-10-10 CN CN201320623908.9U patent/CN203480037U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9752949B2 (en) | 2014-12-31 | 2017-09-05 | General Electric Company | System and method for locating engine noise |
| US9803567B2 (en) | 2015-01-07 | 2017-10-31 | General Electric Company | System and method for detecting reciprocating device abnormalities utilizing standard quality control techniques |
| US9874488B2 (en) | 2015-01-29 | 2018-01-23 | General Electric Company | System and method for detecting operating events of an engine |
| US9903778B2 (en) | 2015-02-09 | 2018-02-27 | General Electric Company | Methods and systems to derive knock sensor conditions |
| US9791343B2 (en) | 2015-02-12 | 2017-10-17 | General Electric Company | Methods and systems to derive engine component health using total harmonic distortion in a knock sensor signal |
| US10001077B2 (en) | 2015-02-19 | 2018-06-19 | General Electric Company | Method and system to determine location of peak firing pressure |
| US9915217B2 (en) | 2015-03-05 | 2018-03-13 | General Electric Company | Methods and systems to derive health of mating cylinder using knock sensors |
| US9695761B2 (en) | 2015-03-11 | 2017-07-04 | General Electric Company | Systems and methods to distinguish engine knock from piston slap |
| US9784231B2 (en) | 2015-05-06 | 2017-10-10 | General Electric Company | System and method for determining knock margin for multi-cylinder engines |
| CN106291716A (en) * | 2015-05-12 | 2017-01-04 | 宽仕工业股份有限公司 | Bolt gets loose and detects device and detection method thereof |
| US9933334B2 (en) | 2015-06-22 | 2018-04-03 | General Electric Company | Cylinder head acceleration measurement for valve train diagnostics system and method |
| US9784635B2 (en) | 2015-06-29 | 2017-10-10 | General Electric Company | Systems and methods for detection of engine component conditions via external sensors |
| US10393609B2 (en) | 2015-07-02 | 2019-08-27 | Ai Alpine Us Bidco Inc. | System and method for detection of changes to compression ratio and peak firing pressure of an engine |
| US9897021B2 (en) | 2015-08-06 | 2018-02-20 | General Electric Company | System and method for determining location and value of peak firing pressure |
| US10760543B2 (en) | 2017-07-12 | 2020-09-01 | Innio Jenbacher Gmbh & Co Og | System and method for valve event detection and control |
| CN111175378A (en) * | 2020-01-21 | 2020-05-19 | 河海大学 | Method for rapidly detecting bolt tension |
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Granted publication date: 20140312 Termination date: 20181010 |