High school mathematics teaching is with how much projection arrangement

The utility model discloses a high school mathematics teaching is with how much projection arrangement, which comprises a fixing plate and i, tilt support rod is installed to the bottom of fixed plate, tilt support rod is equipped with four altogether, tilt support rod's the outside all is fixed with the couple, be fixed with the hinge seat on the fixed plate, the hinge seat is connected with themovable rod, be connected with stainless steel coil spring between the movable rod, and the one end of movable rod installs the clamp plate, the inboard of clamp plate is fixed with the bearing frame,be connected with the axis of rotation on the bearing frame, the one end of axis of rotation is fixed with rubber pressure plate, be provided with the projector between the rubber pressure plate. Theutility model discloses, through being provided with the bearing frame on the clamp plate, and the bearing frame is connected with the axis of rotation, and the one end of axis of rotation is fixed with rubber pressure plate,