Concentrated compliant type three-stage displacement amplification mechanism

The invention relates to a centralized compliant type three-stage displacement amplification mechanism which comprises a base, an input end beam, an output end centralized mass and a plurality of flexible hinges. 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. One end of the input end beam is connected to the input end of the lever type mechanism through a flexible hinge; the fulcrum end of the lever type mechanism is connected to the base through a flexible hinge, 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 bl