Catenary maintenance operation vehicle and auxiliary device thereof

The utility model discloses a contact network maintenance operation vehicle and an auxiliary device thereof, and the auxiliary device comprises a guide rail disposed on an operation platform of the contact network maintenance operation vehicle, and the guide rail extends in the length direction of the operation platform; the auxiliary platform is arranged on the guide rail, the auxiliary platformmoves on the guide rail by manually applying acting force, and the height of the auxiliary platform is larger than that of the operation platform. Auxiliary device, wherein the auxiliary platform is higher than the operating platform; ladder capable of being replaced, an operator can stand on the auxiliary platform to fully overhaul higher parts such as a catenary carrier cable in all directions;in addition, the auxiliary platform can move on the guide rails laid on the operation platform through acting force exerted manually, so that the auxiliary platform is transferred between different overhauling positions, carry