Suspension type wave speed logging device

The utility model discloses a suspension type wave speed logging device which relates to a wave speed measuring apparatus for measuring the compressional wave and the shear wave of the measured rock soil in the technical field of rock soil engineering reconnaissance measuring. The utility model comprises a vibration source controller, an electromagnetic vibration source, a sensor, a pre-processor amplifier, a wave filter, a buffer, a cache, an A/D converter, an interface circuit, a logic controller and a power supply, etc. With making use of the electromagnetic vibration source creating vibration in the measured drill hole and forming the vibration signal of the compressional wave and the shear wave, the vibration signal can be transformed into electric signal via the sensor, the vibration wave shape signal can be displayed and stored by inputting into the measuring circuit, and the wave speed can be automatically measured out in order to get the measuring purpose. The utility model also has the characteristics of non-affecting of measuring depth, non-affecting of ground environment condition, simple measuring, high measuring precision and facility instrument, which is special suitable for measuring the compressional wave and the shear wave in rock soil reconnaissance drilling.