Concentrated compliant type three-stage displacement amplification mechanism

The utility model relates to a centralized flexible three-stage displacement amplification mechanism which comprises a base, an input end beam, an output end centralized mass and a flexible hinge. The two sides of the input end beam are each provided with a lever type mechanism, a Scott-Russell mechanism and an arc-shaped mechanism. The input end beam is connected to the input end of the lever type mechanism through a flexible hinge; the lever type mechanism is connected to the base, and the output end of the lever type mechanism is connected to the Scott-Russell mechanism through a flexible hinge; the Scott-Russell mechanism is provided with a large mass block and a small mass block, the base and the large mass block are connected to the small mass block through flexible hinges, the output end of the lever type mechanism is connected to the input end of the large mass block through a flexible hinge, and the output end of the large mass block is fixedly connected to one end of the arc-shaped mechanism; the ot