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In the liftable LED high mast light, the bottom includes not only the electrical control system but also the motor for the lifting system. The lifting mechanism of the high mast light is achieved by changing the motor direction. To ensure safety against theft, the high mast light is equipped with a sealed door that has a high-security lock. The electrical control system is installed inside the mast to prevent failures in the lifting system due to harsh environmental conditions. Various overcurrent protection devices are included in the electrical control system.
The conductive materials in the system are predominantly silver-plated copper to ensure good electrical connections. The lifting system of the liftable high mast light drives the raising and lowering of the lamp plate through components such as the motor, electromagnetic braking worm gear reducer, safety couplings, main steel wire rope, auxiliary steel wire rope, rope splitter, and moving pulley groups. The worm gear reducer has a strong self-locking capability with a compact transmission and a high transmission ratio. To reduce the gear ratio and minimize the rising torque, an additional moving pulley group has been added, so that the lifting speed of the lamp plate is less than 0.2 meters per second.
The main steel wire rope connects to the auxiliary steel wire rope through the rope splitter, preventing the auxiliary steel rope from winding due to the stretching of the main wire. Both the main and auxiliary steel wire ropes are made of high-strength, corrosion-resistant 6*19 non-rotating galvanized steel wire rope. The lifting pulley groups are made using hot-dip galvanized A3 steel brackets, stainless steel shafts, and copper pulleys to ensure corrosion resistance and smooth operation under normal atmospheric conditions.
Various fasteners, washers, and clips are also made from hot-dip galvanized or stainless steel. The lamp plate features six groups of guiding pulley systems and more than three braking devices. During the lifting or lowering, the guiding wheels with a distribution of 120 degrees roll along the mast surface, ensuring that the lamp plate does not sway. To guarantee that the lamp plate automatically stops at its limit position, there are reliable limit switches installed for both ascending and descending movements, along with over-travel protection. The working surfaces of the guiding wheels that contact the mast are made using a rubber heat-pressing process. This outlines the detailed lifting system of the high mast light. Although it may seem complicated, it is very convenient to operate.
