Unloading method for advertising board wind force loading and anti-strong wind advertising board

Abstract

The invention discloses a load-off method of billboard wind power loading, the handle process is: A. measure the wind speed in real time, changing the wind speed into electric control signal; B. Anemometry instrument comparison circuit composes the electric control signal with the control of parameter which is pre-established, controlling the running of the motor by the relay; C. The electric motor drive the vane of the shutter billboard plate to do angular adjustment. This invention of the billboard against strong wind, the plate face is shutter and set with electromagnetism lock implement, the live shaft of each vane on the plate face are set on the transmission mechanism; the electric motor assembles transmission mechanism by the reducer ,the anemometry instrument is equipped with the safety relay and the replacement relay , two relays link the positive and negative rotate control circuit of the electric motor respectively , the safety relay links with blade electromagnetism lock implement; setting regular location arriving limit switch and revolving arriving limit switch on the transmission mechanism respectively. The invention can realize the load-off of the billboard wind power loading, improved the resistivity ability against the strong wind of the outdoor billboard.

Description

technical field [0001] The invention relates to a billboard wind load unloading method and an anti-strong wind billboard related to the method. Background technique [0002] The accidental damage of outdoor billboards is a major safety hazard that directly threatens the lives and property safety of the broad masses of the people. In the event of accidental damage to billboards, the most prominent form of damage is insufficient wind resistance, or a sudden encounter with rare local strong winds, causing the billboard to fall or even collapse as a whole. Especially with the rapid development of the market economy, outdoor billboards are getting bigger and taller, and accidents where billboards are blown down by strong winds and cause heavy casualties are often reported. From the perspective of billboard design, in addition to the large wind area of ​​the billboard and the insufficient strength of the bracket, the more important reason is that in the sudden strong wind, the ge...

AI Technical Summary

Problems solved by technology

From the perspective of billboard design, in addition to the large wind area of ​​the billboard and the insufficient strength of the bracket, the more important reason is that in the sudden strong wind, the general billboard cannot release the strong instantaneous or short-term force caused by the strong wind. , when this force exceeds the structural strength of the billboard, a collapse accident will occur

Increasing the strength of billboards and their brackets is a direct way to solve the problem, but there is a limit to increasing the strength, which will not only consume a lot of steel and increase the production cost, but also be difficult to guard against extremely rare local strong winds

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