Rapid fiber stretching and freeze-frame device

The invention discloses a rapid fiber stretching and freeze-frame device which comprises a main body frame with a U-shaped upper part and a base lower part, a main sliding shaft is transversely and detachably fixed in the middle of a notch of the U-shaped part of the main body frame, a spring is sleeved on the main sliding shaft, and two ends of the spring are provided with sliding separation blades which are arranged on the main sliding shaft in a sliding and sleeving manner; the two ends of the complete fiber experiment sample are respectively fixed at the upper parts of the two sliding separation blades; the top ends of the two sides of the U-shaped part of the main body frame are each rotationally connected with an irregular polyhedral rotor, and any face of each irregular polyhedral rotor can abut against the outer side wall of the sliding blocking piece adjacent to the irregular polyhedral rotor through rotation. In combination with the use of a microscope observation platform, the deformation informati