Easy dismounting's layer door gear

The utility model relates to an easy dismounting's layer door gear. Current layer door gear is widely used integrative for the dismouting is inconvenient, and the replacement cost is high. The utility model discloses a take orbital backplate and connect the door strap on the backplate, be equipped with the gyro wheel on the door strap, the gyro wheel middle part is equipped with a connecting axle, the end of extending of connecting axle passes through the nut rigid coupling behind the door strap for the door strap passes through the gyro wheel to be realized sliding along the track. Hang the door plant and improve to the mode dismantled through the nut rigid coupling by original on -dismountable mode with the connection structure of gyro wheel, when the gyro wheel needs to be changed because of wearing and tearing, both made things convenient for the gyro wheel dismouting, still need not to change the door strap, only need to change the gyro wheel that damages, guarantee the life of harmless parts, effectivel