Hydraulically-driven bidirectional gear shifting mechanism

The utility model discloses a hydraulic drive two-way gear shifting mechanism which comprises a shifting fork, a transmission shaft and a hydraulic drive assembly, a synchronizer is installed on the transmission shaft, a gear shifting gear is installed on the transmission shaft in a rotating mode, and the shifting fork is connected with the synchronizer installed on the transmission shaft. The hydraulic driving assembly selects whether the gear shifting gear and the transmission shaft are in transmission connection through the synchronizer or not by driving the shifting fork to move. The hydraulic driving assembly comprises a gear shifting shaft, a first spring, a second spring and a hydraulic oil cylinder. The two ends of the gear shifting shaft are erected on the shell, the gear shifting shaft is in sliding fit with the shell, the shifting fork is fixed to the gear shifting shaft, and the transmission shaft is rotationally connected with the shell. The hydraulic driving assembly comprises a first spring, a