Pitching linkage mechanism applied to infrared radar scanning

The invention relates to a pitching linkage mechanism applied to infrared radar scanning, belongs to the field of pan-tilt pitching mechanisms. The mechanism is used for solving the defect that a driving mode in the prior art can generate electromagnetic interference on image acquisition equipment. The pitching linkage mechanism comprises a holder; an oscillating mirror arranged on the holder; and a pitching mechanism used for controlling the oscillating mirror to perform pitching motion. The pitching mechanism does not use a conductive slip ring. The pitching mechanism comprises a rotating shaft, a connecting rod sliding block, a rotating sliding ring, a guide connecting rod, a T-shaped screw sliding block, a shifting fork and a pitching servo motor; when the shifting fork moves up and down, the guide connecting rod is driven to slide up and down along sliding grooves in the two sides of the light cylinder, a first rotary sliding ring is installed on the guide connecting rod and arranged on a second rotary s