METHOD FOR PROTECTING LOCK GATE OF NAVIGATION HYDRAULIC STRUCTURE Russian patent published in 2017 - IPC E02B7/20 E02C1/10 

FIELD: construction.

SUBSTANCE: invention relates to the technology of protecting the mitering lock gate of the navigation hydraulic structure against the berthing impact during lockage in the application of safety systems with hydraulic shock absorbers. A method is implemented as follows. The installation is made by the commands of the automated control system at the ship's entrance to the lock from the upstream side perpendicularly to the lock of the safety device containing a flexible barrier consisting of two cable parts, one ends of which are connected to hydraulic shock absorbers and the other ends to each other by the hitch assembly. Two hydraulic shock absorbers with chokes are connected to the pumping unit by hydraulic lines. When the ship enters the lock, the initial data on speed, light displacement and deadweight are entered to the automated control system. Control signal to obtain the necessary flow of working fluid through the choke, providing the necessary rigidity of hydraulic shock absorbers for this ship, is formed in an automated control system and sent to the chokes. Dissipation of ship motional energy and its stop during berthing impact onto the safety device by the flow of working fluid through the choke of the hydraulic shock absorber and setting of the safety device to the position along the lock for ship passage through the lock are carried out.

EFFECT: allows to extend the damping stiffness range of the safety device, reduce impact loads on the ship and the power elements of the safety device, which will reduce the volume during maintenance and repair.

1 dwg