ELECTRIC HYDRAULIC SYSTEM OF SHIP LOCK DOUBLE-LEAF GATE DRIVE Russian patent published in 2013 - IPC E02B7/20 E02B7/36 

FIELD: construction.

SUBSTANCE: electric hydraulic system of a ship lock double-leaf gate drive comprises two piston power hydraulic cylinders, every of which kinematically via its stem is connected with one leaf of the gate, and the under-piston cavity of which is connected to the injection line of the pump with the drive from its electric motor. The pump is connected with an input to a supply tank, and each gate leaf is equipped with a sensor of its position. The electric drive of the pump drive is connected to the electronic control unit. The above-piston cavity of the power cylinder is connected to the second injection line of the second pump with its drive from the second electric motor. The inlet of the second pump is connected to the supply tank. On the first and second injection lines there are pressure sensors connected to the electronic control unit. The first and second electric motors are connected each to the electronic control unit via its frequency converter, and the sensor of position of each gate leaf is installed on the stem of the piston of the appropriate power hydraulic cylinder and is connected to the electronic control unit.

EFFECT: increased accuracy of gate leaf motion speed control when moving forward and backward.

1 dwg