DEVICE FOR CONTROL OF HYDRAULIC MANIPULATOR Russian patent published in 2004 - IPC

FIELD: program-controlled manipulators.

SUBSTANCE: device has two hydraulic cylinders for rotating arm, hydraulic cylinder for rotating forearm, slide valves, and hydraulic lines for communication of hydraulic cylinder spaces with the pressure source and drain pipeline. The device is provided with an additional hydraulic cylinder for rotating forearm. The hydraulic cylinders for rotating arm are at an angle to each other, and their rods are interconnected in the pivoting unit via which the cylinders are secured to the arm and pivotally connected with the cylinders of the forearm. The slide valves are made of electrically driven valves combined such that each cylinder of the arm and cylinders of the forearm are provided with pairs of controlled valves which are in communication with the common pressure and drain passages, respectively. The valves are hydraulically interconnected in pair. The control circuits for the electric motor of the pressure source are provided with variable resistor and rotation frequency thyristor controller.

EFFECT: expanded functional capabilities.

3 cl, 4 dwg