Coal mine tunnel floor heave control device

The utility model discloses a coal mine tunnel floor heave control device which comprises a base, a supporting structure is installed on the top of the base, and the supporting structure comprises a connecting base, a plurality of connecting springs, a rotating rod, a threaded rod, a lifting base, a fixing block, an arc-shaped frame, a plurality of connecting rods, two expansion assemblies, two limiting plates and a plurality of limiting through holes. The utility model relates to the technical field of coal mine tunnel construction, during operation, through the cooperation of the rotating rod, the threaded rod, the two expansion assemblies and the two limiting plates, the use height and width of the device can be adjusted, the device can be suitable for various tunnels, various measurements are not needed before use, and meanwhile, the technical scheme is simple in structure and convenient to use. And multi-user cooperative use is not needed. 本实用新型公开了一种煤矿巷道底鼓控制装置，包括底座，所述底座顶部安装有支撑结构，所述支撑结构包含有连接座、若干连接弹簧、转动杆、螺