Air intake and exhaust device of diesel generating set

The utility model belongs to the technical field of diesel generators, and particularly relates to an air inlet and exhaust device of a diesel generator set, which comprises a set base and a box body, a fixing frame is arranged at one end of the set base, a gear is arranged in the fixing frame, a servo motor is arranged on one side of the gear, racks are connected with two sides of the gear in a meshed mode, and the rack is connected with the box body in a meshed mode. A connecting plate is arranged at the tail end of the rack, and a fixing block is arranged on the connecting plate; the servo motor controls the gear to rotate, so that the rack slides towards the two sides in the fixing frame, the connecting plate is driven to control the fixing block to move, and the problems that an existing air inlet and exhaust device of the diesel generating set is mostly designed in a modular mode, and the disassembly and assembly mode is generally that bolts and a base are used for fixed installation; the problem that t