Cold continuous rolling mill working roll bending-roll continuous no-dead-zone control device

The utility model provides a cold continuous rolling mill working roll bending roll continuous no dead-zone control device which is composed of controllers, pressure sensors, servo valves, reversing valves, and hydraulic cylinders, wherein the hydraulic cylinders are controlled by the reversing valves and the servo valves, and control signals of the servo valves are supplied from the controllers. The utility model is characterized in that the form of double hydraulic cylinders arrangement is adopted, four hydraulic cylinders are symmetrically arranged at the position of each bending roll, two hydraulic cylinders on the upper part and two hydraulic cylinders on the lower part are arranged side by side; every four hydraulic cylinders are connected with one servo valve, every servo valve is connected with one controller, and every four hydraulic cylinders are provided with one pressure sensor. The utility model has the advantages and the effects that the dead-zone phenomenon can be eliminated when the positive and negative bending roll forces change, and accordingly, the problems of finished products with steel waveform edges, thick difference, steel plate off tracking, tying the roll tight, etc., the structure and the mounting means are simple, the shortage that the requirement of positioning reference is high when the roll is changed in the cylinder body is solved, the service life of the cylinder body is enhanced, and the utility model is favorable to normal production and maintenance of the unit.