HYBRID POWER SYSTEM AND OPERATION MACHINE

Disclosed is a hybrid power system and an operation machinery. The hybrid power system includes an engine, a power distribution device, and a double-shaft extension motor. An input end of the power distribution device is connected to the output end of the engine, a first power output end of the power distribution device is connected to one end of the drive shaft, the input end is connected to the first power output end; a second power output end of the power distribution device is connected to one end of the double-shaft extension motor, and the second power output end is configured to selectively coupled with the input end or separated from the input end; another end of the double-shaft extension motor is configured to connect with the hydraulic power system. The power distribution device is provided with a power coupling state and a separation state; in the power coupling state, the first power output end and the second power output end form a power coupling connection, so that the engine is connected to the double-shaft extension motor; in the separation state, the input end and the second power output end are separated, so that the engine and the double-shaft extension motor are separated. Disclosed can conveniently realize on-demand distribution of the power of the hybrid power system by changing the working state of the power distribution device according to actual needs.