An anti-falling lightning rod

Abstract

The invention relates to an anti-shedding lightning rod, and solves the problems in the prior art that no strengthening measure is taken for a lightning rod, the vortex shedding can be easily formed to make the lightning rod shake, and as a result, the lightning rod breaks or falls off. A lightning rod is mounted at the top of a tower. A winding wire is disposed on an outer wall of the lightning rod. Two end portions of the winding wire are wound onto the outer wall of the lightning rod in opposite rotating directions in a helical cross manner. The lower portion of an inner cavity of the lightning rod is fixed with a flange plate. A safety rope is disposed on the flange plate. The safety rope penetrates through the bottom of the lightning rod and is then fixed on the tower. The invention is advantageous in that the winding wire is wound helically onto the outer wall of the lightning rod, the regular vortex shedding is prevented from forming at the rear portion of a circular tube of the lightning rod, the transverse vibration caused by the vortex shedding is avoided, therefore, the shaking amplitude of the lightning rod is reduced, the anti-fatigue degree of the lightning rod is improved, and the breaking and falling off are prevented. The case in which the lightning rod hits someone or something after long-term use due to the sudden breaking and falling caused by fatigue rupture is prevented.

Description

Technical field [0001] The invention relates to the technical field of lightning rods, in particular to an anti-dropping lightning rod with a safety rope to eliminate vortex separation. Background technique [0002] Lightning rods of single-tube communication towers are usually made on the top by ordinary welding, and no strengthening measures are taken. When the top diameter is relatively large, the diameter of the lightning rod and the tower body will be very different, so the structural rigidity at the lightning rod will suddenly decrease a lot of. Since ordinary lightning rods use round steel pipes with small cross-sections, wind loads will entangle together to form vortices after passing through the cross-sections. The vortices will fall off under the action of the wind. The continuous vortex shedding will cause the lightning rods to sway. As a result, the lightning rod is swayed, so the swaying frequency of the single-tube tower exceeds the number of round trips that the s...

AI Technical Summary

Problems solved by technology

[0003] The present invention mainly solves the problem that the lightning rod in the prior art has no strengthening measures, and it is easy to form a vortex shedding, causing the lightning rod to shake, causing the lightning rod to break and drop, and provides an anti-falling lightning rod with a safety rope that eliminates the vortex detachment

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