Probe and wave velocity test appearance that has this probe thereof

The utility model discloses a probe and wave velocity test appearance that has this probe thereof, its technical scheme main points are, including the probe, the connection of after section of probe pulls and the probe signal transmission line, articulated on the outer wall of probe have radial reciprocal wobbling pendulum rod, drive pendulum rod radially to stretch out and the first elastic component withdrawed and the outside that the is located the pendulum rod first rolling member to the measuring aperture inner wall on that is used for contradicting. By adopting the above technical scheme, the mutual cooperation of first elastic component and pendulum rod through the probe, the elasticity of utilizing first elastic component make the pendulum rod have a radial reciprocal flexible volume, and the outside of pendulum rod has a first rolling member, and the measuring aperture back is put into to the probe, provide certain radial compensation to first rolling member through first elastic component, and it po