Medium wave infrared detector convenient to install

The utility model discloses a medium wave infrared detector convenient to install, and relates to the technical field of detectors. Comprising a detector and a mounting block, an insertion block is fixed to the rear side of the detector, a connecting groove is formed in the top end of the mounting block, an insertion groove is formed in the mounting block, the insertion block is matched with the insertion groove, the insertion groove is communicated with the connecting groove and smaller than the connecting groove, a fixing mechanism is arranged on one side of the mounting block, and the fixing mechanism comprises two connecting plates fixed to one side of the mounting block. Compared with the prior art, the difference is that the first motor drives the lead screw to rotate, the lead screw firstly drives the sliding block to rotate in the transverse opening, when the lead screw rotates to the position above the vertical opening, the lead screw continues to rotate, the connecting rod is limited, the sliding bl