Screw-driven control system

A screw-driven control system for an associated door system including an associated sliding door, the screw-driven control system comprising:

• a driving mechanism fixed to an associated cross beam defining a support for the screw-driven control system;
• a guide locking piece;
• and
• a limiting mechanism for limiting movement of the drive mechanism,
• wherein, the driving mechanism includes:
• a screw rod and a nut assembly driven by a motor,
• the nut assembly includes a transmission frame connected with the associated sliding door, a nut mounted to the transmission frame and connected to the screw rod, and a follow-up member fixed to the nut,
• wherein the screw rod drives the nut assembly to reciprocate axially along the screw rod,
• wherein forward rotation of the screw rod rotates the follow-up member with the screw into contact with the an upper surface of the guide locking piece, the upper surface of the guide locking piece moves the follow-up member into contact with the limiting mechanism where the follow-up member is blocked by the limiting mechanism, with the follow-up member blocked by the limiting mechanism the follow-up member rotates with the screw rod to enter a space between a side plane of the guide locking piece and the limiting mechanism and is locked and
• wherein reverse rotation of the screw rod rotates the follow-up member with the screw rod to disengage from the guide locking piece and is unlocked, and the nut assembly moves axially along the screw rod away from the limiting mechanism,
• wherein the limiting mechanism includes a limiting plate having a side plane facing the guide locking piece, the side plane of the limiting plate and the side plane of the guide locking piece define the space for the follow-up member.