Roller chromium plating device

The utility model discloses a roller chromium plating device which comprises a chromium plating tank, an electrode assembly, a rotating assembly, an insulating ring, a conductive assembly and a clamping assembly, the electrode assembly is fixedly arranged in the chromium plating tank, and an annular supporting platform is fixedly arranged at a port of the chromium plating tank; the rotating assembly is assembled on the annular supporting platform, the insulating ring is fixedly arranged on the rotating assembly, and the insulating ring is made of an insulating material; the conductive assembly comprises an annular conductive contact plate fixedly arranged on the insulating ring, a conductive rod fixedly arranged on the annular supporting platform and a carbon brush connected to the conductive rod in a sleeving mode, the conductive rod is sleeved with a spring, one end of the spring abuts against the conductive rod, the other end of the spring abuts against the carbon brush, the carbon brush abuts against the