Connecting and disconnecting device for a guide line

A connection and disconnection device for a guide line (1) between a floating platform and an underwater installation, comprising a cylindrical adapter (2), attached by a connector device to the end of the guide line (1), and provided with a guiding and directional mechanism (24, 25), a longitudinal positioning surface (21), and at least one locking head (40) coming into contact respectively with guide ramps (26, 27), with a positioning seat (22), and at least one locking head slot (44), on the inside of a cylindrical sleeve (3), this sleeve (3) extending upwards from a guide post (4) fixed to the underwater installation, this locking head (40), constituting an extension of the locking bar (33) bearing on a compression spring (37), the lower surface of the said locking head, which forms an angle with the axis of the adapter, constituting a retracting cam, designed to come into contact with a tapering surface (49) cut into the inside upper edge of the sleeve (3), while the upper surface (46) of the said locking head, which is perpendicular to the axis of the adapter, forming a locking edge designed to rest on the upper edge of the locking slot (44), and wherein each locking head (40) comes into contact with a locking bar (33), extended by a shearing bolt (42), and in that the locking slots (44) are formed of openings in the side of the sleeve (3).