Positioning device for multifunctional sound level meter

The utility model discloses a multifunctional positioning device for a sound level meter, which comprises a fixing plate, an adjusting box, a positioning mechanism for fixing the sound level meter and an adjusting mechanism for adjusting the height of the sound level meter, the positioning mechanism comprises a sliding groove formed in the fixing plate, a rotating rod movably connected with the sliding groove, threaded sleeves arranged on the two sides of the rotating rod in a sleeving mode, sliding blocks in threaded connection with the threaded sleeves, a connecting sleeve arranged in the middle of the rotating rod, a first gear arranged on the outer wall of the connecting sleeve and a second gear engaged with the first gear. The fixing plate, the adjusting box, the positioning mechanism, the adjusting mechanism, the sliding groove, a rotating rod, a threaded sleeve, the sliding block, a connecting sleeve, a first gear, a second gear, a containing plate and a connecting rod are arranged and used in cooperat