Method for examining loosing of iron tower bolts

A technology for bolt loosening and steel towers, applied in towers, optical device exploration, building types, etc., can solve problems such as waste of human resources, falling off, and different degrees of loosening, and achieve the effect of avoiding potential safety hazards

Active Publication Date: 2015-04-08
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0002] The bolts of the iron tower in the transmission line will loosen and fall off under the long-term action of the wind during operation, and even cause the tower to fall in serious cases.
In order to avoid the need to fasten the tower every year, each base tower has tens of thousands of bolts, all of which can reach billions. If a wide range of fastening methods are used, a large amount of human resources will be wasted. , the method of test tightening can only be a simple sampling, because different parts of the iron tower are subject to different forces, the degree of looseness will also be different, simple sampling cannot fully represent the fastening conditions of other bolts of the iron tower

Method used

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  • Method for examining loosing of iron tower bolts
  • Method for examining loosing of iron tower bolts

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] 1. Prepare the following equipment first: Use the video recording function of 5DIII camera 4, replace with at least 32G memory card, or external storage; use 600mm long-distance fixed-focus lens; iron monopod camera frame 7 (stable and reliable, will not Blown by the wind); adopt the Siemens model QVM62.1 wind speed sensor and wind speed, wind direction recorder 2; steel bracket 6 (can be inserted into the soil).

[0023] 2. The camera is calibrated with the lens for visual measurement and calculation, and the camera 4 is adjusted to the clock of the wind speed and wind direction recorder 2 to be consistent.

[0024] 3. Install the wind speed sensor, wind direction, and wind speed recorder 2 on the steel bracket 6 on site, insert the steel bracket 6 into the soil on the edge of the windward side of the tower, the wind speed sensor...

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Abstract

The invention discloses a method for examining loosing of iron tower bolts. The method combines the iron tower vision measurement technology with theoretical calculation to predict loosing of bolts, and adopts the vision measurement method to measure vibration of iron towers. By adopting the non-contact method, potential safety hazard caused by iron tower climbing measurement is avoided, natural wind is utilized as the power source, and the method is time-saving and labor-saving as compared with artificial iron tower climbing cable-lanyard measurement.

Description

technical field [0001] The invention relates to a method for checking iron tower bolts for looseness. Background technique [0002] The bolts of the iron tower in the transmission line will loosen and fall off under the long-term action of the wind during operation, and even cause the tower to fall in severe cases. In order to avoid the need to fasten the tower every year, each base tower has tens of thousands of bolts, all of which can reach billions. If a wide range of fastening methods are used, a large amount of human resources will be wasted. , the method of test tightening can only be a simple sampling, because different parts of the iron tower are subjected to different stresses, and the degree of looseness will also be different, simple sampling cannot fully represent the tightening conditions of other bolts of the iron tower. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for on-line detect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04H12/00
CPCG01V8/10
Inventor 冯砚厅
Owner STATE GRID CORP OF CHINA
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