Mobile structure e.g. pivoting portal, opening and closing device, has wheels that are non-aligned and including surfaces equiped with notches, and motor driving wheels for displacing mobile structure with respect to leaf

摘要

The device has wheels (261, 262) that are non-aligned and including surfaces equiped with notches, where the wheels contact with a portal leaf. A motor (220) drives in rotation the wheels for displacing a mobile structure with respect to the leaf. A gear box assembly (230) has an input shaft to which the motor is connected and two output shafts on which the wheels are mounted.