Instrument-falling-preventing adapter connector for oil fishing well testing

The utility model belongs to the field of oil fishing well testing. The utility model relates to a connector, in particular to an instrument-falling-preventing adapter connector for oil fishing well testing. Including a housing, a fastening nut is arranged in the shell; a hinge bottom plate is arranged at the upper part of the fastening nut; a handle is arranged on one side of the shell, a torsional spring is arranged on the upper portion of the hinge bottom plate, an anti-falling plate is arranged on the front portion of the torsional spring, a rotating shaft is arranged on one side of the anti-falling plate, a first positioning nut is arranged on the upper portion of the handle, and a second positioning nut is arranged on the other side of the shell. The utility model has the beneficialeffects that: 1, the whole device has no pressure in the use environment, the processing and manufacturing requirements are simple, and only the tensile strength needs to be reached; and 2, the wholedevice is reasonable and c