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Method and device for rapidly detecting loosening of bolt of iron tower

A technology for bolt loosening and detection methods, which is applied in measuring devices, geophysical measurement, seismology, etc., can solve the problems of heavy inspection workload, easy missing inspection, labor-intensive and time-consuming, etc., to save manpower and material resources and meet efficiency And the effect of accuracy and fast detection speed

Active Publication Date: 2014-01-22
ANSHAN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER COMPANY +2
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Problems solved by technology

[0002] The assembly of iron towers is generally connected by bolts. The quality of the bolts is very important. Due to the large number of bolts, the inspection is labor-intensive and time-consuming. In the past, when inspecting whether the assembly of iron towers was qualified, supervisors had to climb up the iron towers and inspect each piece of angle iron one by one. and whether each bolt meets the requirements, such an inspection workload is heavy, it is easy to miss inspection, and it is difficult to guarantee the inspection quality

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  • Method and device for rapidly detecting loosening of bolt of iron tower
  • Method and device for rapidly detecting loosening of bolt of iron tower
  • Method and device for rapidly detecting loosening of bolt of iron tower

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Embodiment Construction

[0020] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0021] See figure 1 , is a schematic diagram of the detection state of the embodiment of the present invention. In the present invention, the iron tower 1 is vibrated by adding a mechanical oscillation source 4, and the loose bolts 2 and the tower material parts are excited to resonate or vibrate, resulting in secondary impact sound, which is passed through the vibration frequency receiving device 3. The sound wave is received and converted into an electrical signal, and the electrical signal is analyzed in two ways. One is to display the sound waveform and analyze the waveform by observing the waveform; the other is to analyze the value through the counting method, so as to quickly determine Whether there are loose bolts on the iron tower, the specific implementation includes three steps:

[0022] 1) Select the rotary vibration motor as the mech...

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Abstract

The invention relates to the field of iron tower assembly quality detection, in particular to a method and a device for rapidly detecting the loosening of a bolt of an iron tower. An additional vibration source vibrates the iron tower, a loosened bolt and a tower part are excited to resonate or vibrate to produce secondary impact sounds, and sound waves are received and converted into electrical signals through a vibration frequency receiving device. Two methods are used for analyzing the electrical signals, wherein one method comprises the steps of displaying sound waveforms and performing waveform analysis by observing the waveforms, and the other method comprises the steps of performing counting and analyzing a count value, so that whether a certain bolt on the iron tower is loosened or not can be rapidly judged. Compared with the prior art, the method and the device have the beneficial effects that a sound wave detection technology is adopted for rapid detection after the assembly of the iron tower; the method and the device have the advantages of high detection speed, capability of greatly saving manpower and material resources and no requirements on tower climbing for detection; sound wave data can be analyzed to directly reflect whether the bolt of the iron tower is loosened or not by once comprehensive detection, so that requirements on the detection efficiency and accuracy of the iron tower are met.

Description

technical field [0001] The invention relates to the field of iron tower assembly quality inspection, in particular to a fast detection method and device for iron tower bolt looseness. Background technique [0002] The assembly of iron towers is generally connected by bolts. The quality of the bolts is very important. Due to the large number of bolts, the inspection is labor-intensive and time-consuming. In the past, when inspecting whether the assembly of iron towers was qualified, supervisors had to climb up the iron towers and inspect each piece of angle iron one by one. And whether each bolt meets the requirements, such an inspection workload is heavy, it is easy to miss inspection, and it is difficult to guarantee the inspection quality. Contents of the invention [0003] The purpose of the present invention is to provide a fast detection method and device for iron tower bolt looseness, which uses sound wave detection technology to perform rapid detection after the iro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/00
Inventor 张乐孔宪家刘继元孔薇张小军
Owner ANSHAN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER COMPANY
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