Mine channel supporting device

The utility model discloses a mine channel supporting device, which relates to the technical field of mine mining and comprises a base, a lifting cylinder fixedly mounted at the center of the top of the base, lifting screw rods rotationally connected to four corners, close to the center, of the top of the base, and a lifting plate in threaded connection to the tops of the lifting screw rods. The supporting plate is rotationally connected to the top of the lifting plate, the folding mechanism is arranged at the top of the lifting air cylinder, and the folding mechanism comprises an adjusting plate and adjusting rails fixedly connected to the centers of the front end and the rear end of the bottom of the supporting plate. Through cooperative use of the folding mechanism and all parts in the folding mechanism, during use, the height of an adjusting plate is pushed to rise through a lifting air cylinder, and an adjusting block relatively moves in an adjusting rail through the adjusting plate, so that a supporting