Quick mounting and leveling device for lower wall of prefabricated window

The utility model discloses a quick mounting and leveling device for a lower wall of a prefabricated window, which relates to the technical field of prefabricated buildings, and comprises a base, a plurality of outer sleeves and a plurality of racks, the upper end of the base is connected with a bulge which can be embedded into a clamping groove, and the upper end of the base is used for supporting the lower wall of the prefabricated window; the outer sleeve is vertically mounted on a structural support, and a gear is rotationally arranged on the side wall of the outer sleeve; the multiple racks are embedded into the corresponding outer sleeves and can move up and down along the outer sleeves, the racks are meshed with the gears, and the gears can drive the racks to move up and down when rotating. According to the utility model, the on-site construction time is effectively shortened, and the working efficiency is improved. 本实用新型公开了一种预制窗下墙快速安装调平装置，涉及装配式建筑技术领域，包括：底座、多个外套筒、多个齿条，底座上端连接有能嵌入卡槽中的凸起，底座上端用于支撑预制窗下墙；外套筒