Friction type power takeoff

The invention provides a friction type power takeoff, relates to the field of power takeoffs, and adopts the technical scheme that the friction type power takeoff comprises a box body, an output shaft is rotatably arranged in the box body, an output gear is rotatably arranged on the output shaft, the output gear is connected with a clutch, the clutch is connected with the output shaft, the friction type power takeoff further comprises an input shaft, an input gear is arranged on the input shaft through a bearing, and the input gear is connected with the input shaft. The input shaft is in key connection with a spline piston, the spline piston can be in key connection with an inner hole of the input gear, an elastic piece is arranged between one end of the spline piston and the corresponding bearing, the other end of the spline piston is communicated with an oil cavity, the oil cavity is formed in the input end cover, the input end cover is further provided with an oil channel, the oil channel is communicated w