And two rotating speed output gearboxes are concentric

The utility model discloses a concentric gearbox with two rotating speed outputs, which relates to the field of transmission devices and comprises an input coupling driven by a diesel engine or a motor, the input coupling is connected with one end of an input shaft arranged in a box body, and a connecting housing is arranged on the periphery of the input coupling and used for being connected withthe diesel engine or the motor. An input transmission gear meshed with the transmission shaft driving gear is fixedly mounted on the input shaft, an input shaft piston, an input shaft return spring, an input shaft inner friction plate, an input shaft outer friction plate and an input shaft inner and outer friction plate are arranged in the input transmission gear to form an input shaft clutch; a control valve used for sending out a clutch combination instruction and a gearbox cooler used for cooling the interior of the box body are arranged on the box body. Under the condition that the input rotating speed of the prim