Device and method for diagnosing bolt looseness of power transmission tower pole material connection node
A technology for loosening bolts and connecting nodes. It is used in electromagnetic measuring devices, measuring devices, and electromagnetic/magnetic solid deformation measurement. It can solve problems such as time-consuming and laborious manual detection, large number of node bolts, and bolt loosening failure.
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Embodiment 1
[0062] Embodiment 1: When the connection node of the pole material of the transmission tower is a K-shaped node connected by a vertical or horizontal auxiliary material and an oblique pole material, such as figure 2 and image 3 As shown, at this time, the rods 13 are connected by connecting steel plates 6 and a plurality of node bolts 4 distributed on the connecting steel plates 6, and two piezoelectric film strain gauges 2 are installed at the connecting nodes, and the two piezoelectric film strain gauges The sheets 2 are vertically distributed to each other, and the piezoelectric material sheets 2-1 are bonded to the connecting steel plate 6 by strong glue, and each piezoelectric film strain gauge 2 is provided with a plastic protective cover 3 outside, and the plastic protective cover 3 is glued to Connect or fix it by fastening the bolts, and the connecting wire 2-2 of the piezoelectric film strain gauge 2 is drawn out from the protective cover 3.
[0063] Implementatio...
Embodiment 3
[0064] Embodiment 3: When the connection nodes of transmission tower rods are complex nodes connected by vertical main materials, horizontal auxiliary materials and oblique rods, such as Figure 5 As shown, the rods are connected by connecting steel plates 6 and node bolt groups distributed on the connecting steel plates 6, and four piezoelectric film strain gauges 2 are installed at the connecting nodes, and the four piezoelectric film strain gauges 2 are perpendicular to each other and Arranged in the middle of the bolt group connecting the steel plate 6 in a rectangular shape, each piezoelectric film strain gauge 2 is provided with a plastic protective cover 3 outside, and the plastic protective cover 3 is fixed by bonding or fastening the bolts, and the piezoelectric film strain gauge 2 connecting lead 2-2 is drawn from protective cover 3.
[0065] The following is a detailed description of the bolt loosening diagnosis process of the bolt loosening diagnostic module for th...
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