Electric wheelchair

The invention relates to the technical field of medical rehabilitation equipment, in particular to an electric wheelchair and protection mechanism which comprises a brake component, an adjusting component is arranged on one side of the brake component, a tightening component is connected to one side of the adjusting component, the brake component comprises a rotating shaft, a key groove is formed in the outer side of the rotating shaft, and the key groove is connected with the adjusting component. The portable wheelchair can be rapidly disassembled into the chassis part and the seat part in use, the portability of the wheelchair is improved, meanwhile, the power chassis part of the wheelchair can serve as an independent module to achieve the carrying function, the seat part can be independently disassembled into a foldable seat, and the situation that the speed is too high can be effectively prevented through the arranged protection mechanism; and a good protection effect on personnel can be achieved. 本发明涉及医疗