Elastic expansion device of cathode wires of electric precipitator

The utility model belongs to the technical field of dust removal equipment in mines, in particular to an elastic expansion device of cathode wires of an electric precipitator, which comprises a cathode frame provided with an upper beam and a lower beam. A through hole is arranged on the lower beam of the cathode frame. The elastic expansion device of the cathode wires of the electric precipitator is characterized in that a cathode wire lug is arranged above the though hole, the cathode wire lug is fixed on the upper beam of the cathode frame and hinged with an upper end of the cathode wires, a lower end of the cathode wires is fixedly connected with a screw, a spring component is arranged at the bottom of the through hole, and the screw sequentially penetrates through the through hole and the spring component and is fixed connected with a nut. Due to the fact that expansion change of the cathode wires is automatically adjusted through the spring, problems of breaking and deformation of the cathode wires due t