Distance increasing speed reducer for 5000 kilowatt-level high-power turboshaft engine

The utility model discloses a 5000 kilowatt level high-power turboshaft engine's pitch-increasing speed reducer, including speed reducer main part and output shaft, output shaft is installed outside speed reducer main part and outputs the rotation power of pitch-increasing speed reduction, the outside of output shaft is detachably connected with transmission shaft, and the transmission shaft is detachably connected with the speed reducer main part. The output shaft is connected with external equipment through a transmission shaft, a transmission block is fixed to the outer end of the output shaft, the transmission block and the output shaft are integrally formed, the transmission block is designed to be of a rectangular structure, and a connecting groove is formed in the transmission shaft. The distance increasing speed reducer for the 5000kw-level high-power turboshaft engine is provided with the detachable transmission shaft, the output shaft outputs power through the transmission shaft, the external shape