Wheel type combine harvester rear axle power input connecting device

The invention discloses a wheel type combine harvester rear axle power input connecting device. The device comprises a second main transmission case shaft, supporting bearings, supporting bearing pedestals, an output shaft, output shaft supporting bearings, a rear axle power input connecting casing, a meshing gear seat and a meshing sleeve, wherein the outer end of the second main transmission case shaft is supported on a main transmission case body through the supporting bearings; the output shaft arranged at the outer end of the second main transmission case shaft is coaxial with the second main transmission case shaft; a meshing gear seat external spline and an output shaft external spline have the same parameters, and are both matched with a meshing sleeve internal spline; the meshing sleeve is connected with the output shaft or the meshing gear seat in a sliding manner through the splines. According to the device provided by the invention, the conventional relatively complex gear rear axle transmission s