Prestressed anchor measuring device

The utility model discloses a measuring device for a pre-stressed anchor rod. The measuring device comprises a pre-stressed anchor rod mounting and fixing base and a vibrating wire type reading instrument, the pre-stressed anchor rod mounting and fixing base comprises a fixing base and a pre-stressed anchor rod mounting seat; a vibrating wire sensor of the vibrating wire type reading instrument is fixedly mounted in the middle of the pre-stressed anchor rod body; the prestressed anchor rod penetrates through the prestressed anchor rod mounting seat, and two ends of the prestressed anchor rod drive the steel base plates to abut against two side end faces of the prestressed anchor rod mounting seat through nuts. During testing, a torque wrench is adopted to apply tension torque to one end of the pre-stressed anchor rod, the vibrating wire type reading instrument can collect frequencies at different tension torques, and the axial tension of the pre-stressed anchor rod can be obtained through the applied tension