Transmission system: upgraded from the original chain transmission to synchronous belt pulley (adopted for doors above 4 meters, bilateral counterweight), direct connection of reduction motor (adopted for doors below 4 meters, unilateral counterweight), and upgraded from rigid double fixed transmission shaft to drum-shaped double floating transmission shaft, effectively reducing mechanical noise and equipment vibration of the transmission system, and running more smoothly and smoothly.
Lifting system: sprocket chain lifting upgrade to a synchronous pulley with smooth gear meshing characteristics, due to its gear transmission characteristics, coupled with two media, one soft and one rigid fit, the transmission process is more stable and low noise, longer life.Completely change the door in the operation of the sense of frustration and manual release when opening and closing the door difficult problem.