Polishing device for rail transit rigid suspension contact line

The invention relates to the field of rail transit contact line polishing, and discloses a rail transit rigid suspension contact line polishing device which comprises a suspension mechanism in sliding connection with a busbar, and the contact line is located in the suspension mechanism; the polishing mechanism comprises a polishing wheel, a rotating shaft, a mounting block and a driving device, the polishing wheel and the mounting block are both arranged in the suspension mechanism, the rotating shaft can be rotatably arranged on the mounting block, the driving device drives the polishing wheel to rotate through the rotating shaft, the driving device is arranged on the mounting block, and the mounting block is slidably connected with the suspension mechanism; the precision adjusting mechanism comprises a first supporting block, a second supporting block, an elastic piece and a linear lifting device, the linear lifting device is arranged on the suspension mechanism and connected with the first supporting block