JMB-2 Explosion proof type JMB-4 opening and closing air door winch
The JMB-2 explosion-proof type JMB-4 opening and closing air door winch consists of six main parts: explosion-proof motor, coupling, transmission gear, worm gear reducer, drum, and base. The drum is driven by a worm gear reducer through a pair of transmission bevel gears driven by an electric motor. The support of the transmission parts and the worm gear use sliding bearings, while the worm gear uses rolling bearings. The worm has self-locking function to prevent the steel wire rope from sliding down. This machine is driven by an electric motor, but it can also be manually driven when the power is temporarily cut off or there is no power available.
