Fixing device for acoustic emission detecting instrument signal acquisition probe

The utility model relates to a fixing device for an acoustic emission detecting instrument signal acquisition probe, in particular to a fixing device for fixing the acoustic emission detecting instrument signal acquisition probe. The fixing device comprises a body, an upper height adjusting rod, a lower height adjusting rod, a locking device and a replacement type probe pressing cap. The fixing device is fixed to the surface of an object to be detected through a suction cup, and the purpose of rapidly fixing a container, a storage tank and the like made of nonferrous magnetic materials (such as stainless steel and titanium) is achieved. The fixing device is simple in structure, convenient to carry, high in practicability, and capable of fixing probes of different heights and diameters; due to a locking device, the position of the upper height adjusting rod can be rapidly and conveniently controlled so as to supply necessary pressure onto the probe, and it is ensured that the probe and the object to be detected are efficiently fixed; the stable pressure can be provided by a spring, so that even if the fixing device loosens slightly, fixing force borne by the probe will not change excessively, and finally the coupling force between the probe and the object to be detected fixing force borne by the probe will not be excessively small.