Coupling/uncoupling device for multi-coupling plates

A coupling/uncoupling device of a multi-coupling device for a simultaneous connection of a plurality of hydraulic, electrical, and/or pneumatic lines, comprising:

• a movable plate;
• a fixed plate, the movable plate and the fixed plate each supporting a plurality of quick semi-couplings;
• a pair of planar elements each hinged on one side of the movable plate;
• and
• a safety locking device comprising a trigger adapted to be operated by a user and associated with one of said planar elements in a translatable manner,
• further comprising a lever adapted to be operated by the user and connected to one of said planar elements, wherein each of said planar elements has an eccentric guide or groove configured to receive a clamping pin provided on said fixed plate so that an action of said eccentric guide or groove on said pin causes a nearing of the movable plate to the fixed plate and the connection of the quick semi-couplings due to an action of the user on said lever
• wherein said trigger of said safety locking device is slidingly associated with a first planar element of said pair of planar elements connected to said lever which comprises a handle adapted to be gripped by the user, said trigger and said handle of said lever being mutually positioned so that the user is enabled to grip the handle with a palm of said user's hand and operate said trigger with said user's fingers of the same hand,
• wherein said trigger comprises a first portion adapted to be operated by said user with one finger and projecting outward from said first planar element, and a second pin portion projecting from said planar element toward an inside of the coupling/uncoupling device,
• wherein said safety device further comprises a first receiving seat configured to receive said second pin portion of said trigger, made on a body of said movable plate, and a second receiving seat, also made on said body, for said second pin portion of said trigger.