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This is a street light with a liftable lamp, and its principle is similar to the raising of the flag, which make it extremely convenient to repair it when the lamp stops working. As far as I know, most of the street lights are integrated at present, and we need an elevator as well as teamwork to fix them if they don’t work. In my opinion, it’s a waste of time, money and human and material resources. What’s more, it’s a dangerous job. Consequently, in order to improve the efficiency of the repair process, and save the maintenance costs in the long run, I design the pole of the street lights with a groove in it , and there is a fixed pulley at
Chongqing Technology and Business University