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Bolt looseness-prevention early-warning monitoring device

A technology of early warning monitoring and bolts, which is applied in the field of bolt anti-loosening early warning and monitoring devices, can solve the problems of complicated bracket installation, difficulty in wide-scale application, high application cost, etc., and achieve the effects of reducing manpower input, high economy, and high timeliness

Active Publication Date: 2018-12-18
上海矩尺土木科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the long-distance shooting, the bracket installation of this method is complicated, and the imaging has high requirements for supplementary light. At the same time, it also requires high stability and no occlusion requirements for the layout of the imaging equipment. The application cost is high and it is difficult to apply on a large scale.

Method used

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  • Bolt looseness-prevention early-warning monitoring device

Examples

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Embodiment

[0032] The invention provides a bolt anti-loosening early warning monitoring device. A terminal is fastened above the nut, and a complete set of supplementary light, imaging, wireless communication transmission, image data processor and power supply system is embedded in the terminal.

[0033] The device is embedded on the nut, and by photographing the photogrammetry mark points arranged on the top surface of the screw, it can identify the rotation angle of the nut relative to the bolt, and transmit the detection result of the transmission angle back to the monitoring base station, so as to realize the remote monitoring of the bolt The loose rotation angle of the structure is further calculated to obtain the real-time safety state of the structure.

[0034] When the device is installed, the bolt head 1 and the bolt 2 are integrally formed bolts, the nut 3 is pressed on the nut gasket 4, and the nut 3 is screwed into the bolt 2 and tightened to the specified force standard acco...

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Abstract

The invention relates to a bolt looseness-prevention early-warning monitoring device. The device comprises a sticker and a photographic communication module; the sticker is stuck on the threaded end face of a bolt to be detected, and has a photographic measurement mark; the photographic communication module is used for detecting sticker information, displacement and rotation angle; the photographic communication module comprises an upper enclosure and a lower enclosure, which are connected with each other; the lower enclosure is arranged on the bolt to be detected in a buckling manner; a micro-lens and a light supplementary lamp just aligned to the sticker are arranged on the lower enclosure; a processing chip, a signal antenna and a wireless communication module are arranged on the upperenclosure; and the processing chip is separately connected with the signal antenna, the wireless communication module, the micro-lens and the light supplementary lamp. Compared with the prior art, thebolt looseness-prevention early-warning monitoring device in the invention has the advantages of being simple and convenient to install, firm, reliable, high in stability, accuracy, timeliness and economy, etc.

Description

technical field [0001] The invention relates to the field of bolt loosening detection, in particular to a bolt anti-loosening early warning monitoring device. Background technique [0002] It is not uncommon for high-strength bolts to loosen under the action of luffing tension in engineering. For example, the high-strength bolts of large wind power towers require a manual inspection with a sampling rate of 100% every 3-6 months. [0003] The loosening of high-strength bolts will increase the stress amplitude between the bolts and the surrounding bolts, forming a vicious cycle in which the fatigue life is greatly shortened, and eventually lead to major engineering accidents. At the same time, the loosening of the bolts will repeatedly squeeze the slit of the flange, thereby destroying the anti-corrosion coating, causing corrosion of the flange, and causing damage to the structure. Therefore, dynamic monitoring of high-strength bolt loosening has become an important issue in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C11/12
CPCG01C11/12
Inventor 潘玥马逸鹄陈艾荣王达磊马如进董一庆
Owner 上海矩尺土木科技有限公司
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