Protective suspension type wave velocity logging instrument

The invention discloses a protective suspension type wave velocity logging instrument, and relates to the technical field of exploration equipment. The protective suspension type wave velocity logging instrument comprises a detection head, a connecting line is fixedly connected to the top of the detection head, a fixing sleeve is fixedly connected to the outer wall of the connecting line, a fixing plate is fixedly connected to the outer wall of the fixing sleeve, and a protective cover shell is fixedly connected to the position, located at the bottom of the fixing plate, of the outer wall of the fixing sleeve. According to the protection type suspension type wave velocity logging instrument, two bevel gear motors drive two rotating wheels to rotate, the two rotating wheels drive a balancing weight to rotate, so that the stability of a detection head is enhanced, air is injected into a compressed air bottle through a compressed air pump and discharged out of an air outlet ring through a pipeline to obtain coun