Measuring device for harmonic transmission direction judgment

The utility model discloses a harmonic wave transmission direction determination measuring device, which comprises a storage box, a top cover, a placing plate and a harmonic wave instrument, the top cover is rotatably connected to the edge of one side of the top of the storage box, the placing plate is arranged in the inner wall of the storage box, the harmonic wave instrument is arranged on one side of the top of the placing plate, and a suction head is connected to the top surface of a dust collection plate in a penetrating manner; gas between the dust collecting plate and the inner wall of the top cover is pumped out through the negative pressure pump and the connecting pipe, so that the suction head of the hollow cylinder structure adsorbs dust on the surface of a harmonic instrument on the placing plate and dust on the surface of a port connecting line in the placing groove; according to the device, regular and automatic cleaning of dust adhering to the keys on the surface of the harmonic instrument and