Adjustable air conditioner mounting bracket

The invention relates to the technical field of air conditioner installation, and provides an adjustable air conditioner installation support which comprises an installation plate with an installation hole, a first sliding groove is formed in the installation plate, two parallel third supporting frames are installed on the installation plate in a sliding mode, the two third supporting frames are installed in the first sliding groove in a sliding mode, a screw pipe is rotatably installed on the installation plate, and a screw rod is installed on the screw pipe. The mounting plate is provided with a screw pipe, the screw pipe is provided with two screw rods in a threaded mode, the two screw rods are fixedly connected with the two third supporting frames correspondingly, and the screw pipe is operated to drive the two third supporting frames to move along the mounting plate through the screw rods, and the beneficial effects are that the screw pipe is rotated to drive the two screw rods to move, and the two screw