Mechanical drive connection for driving a shaft in rotation by transmission under tension

An assembly of a mechanical drive connection (1) for rotating a support shaft (2) of a structure which rotates about a central axis (2a) of the support shaft (2) driven by said connection (1), the assembly comprising:

• at least one traction;
• a transmission member, and
• a drive ring (3a, 3e) carried by said support shaft (2) for rotation about said central axis (2a) and for translation along said axis:
• wherein the drive ring (3a, 3e) is driven in rotation by the transmission member (4a, 4b;
• 8a, 8b) having a body (4c;
• 8c) and a first we ends, one of which, the driven end (4d;
• 8d) is fitted to the drive ring (3a, 3e) and wound around said ring, and the a second end (4e;
• 8e) fitted into the traction device causing the transmission member to unwind from the drive ring (3a, 3e) and the carrier shaft (2) to rotate in a given direction (S1), a rotation in the opposite direction (S2) being generated by a second traction device connected to the carrier shaft (2) and in that each one of the traction device is a traction shaft (5) rotating about an axis (5a) of rotation parallel to the central axis (2a) of rotation and comprising a drive wheel (6a, 6b, 6e, 6f) which winds up the corresponding transmission member.