Elevating billboard and control method thereof
OwnerPeiyuan Xuinventor
Life of this patent
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Abstract
The present invention relates to an elevating billboard and control method thereof, which includes a hollow column, a billboard stent, and a windlass controlling a motor, forward relay and back relay, wherein a hollow cylinder is fixed with the billboard stent and rings the column so as to slide along the column up and down, a fixed pulley disposed on the top of the column, a free end of a guy cable of the windlass connecting with the hollow cylinder by the fixed pulley. By using the motor of the windlass and the fixed pulleys, the invention is easy to assemble, disassemble or maintain, and is capable of completing the up and down movement easily and quickly. And using the real-time monitor of the anemoscope, the invention completes the up and down movement easily and quickly by wind scale.
Claims20
An elevating billboard, comprising:
- a hollow column;
- a billboard stent;
- a windlass comprising:
- a motor, a forward relay controlling said motor to rotate forward and a backward relay controlling said motor to rotate backward;
- a hollow cylinder fixed with said billboard stent and ringing said column so as to slide along said column up and down;
- and
- a fixed pulley disposed on a top of said column, wherein a free end of a guy cable on said windlass connecting with said hollow cylinder via said fixed pulley.
Dependencies are inferred from the claim text.