Vehicle-mounted substation equipment maintenance platform

The invention provides a vehicle-mounted substation equipment maintenance platform which comprises a supporting frame, an upper frame and a standing platform, one end of the upper frame is rotationally connected with one end of the supporting frame, the upper frame and the supporting frame can rotate relatively, and self-locking rollers are arranged on the contact faces of the upper frame and a carriage and the contact faces of the supporting frame and the carriage; the other end of the supporting frame slides towards the outside of the carriage through the self-locking idler wheel, rotates towards the ground and then is vertically fixed to the ground, the end, connected with the supporting frame, of the upper frame rotates towards the supporting frame and then is vertically fixed to the upper portion of the supporting frame, the standing platform is fixedly arranged at the top end of the upper frame, and the telescopic self-locking idler wheel is arranged on the contact face of the supporting frame and the g