Adjustable three-support staying-expanding bearing disk machinery

The utility model discloses an adjustable three-raising-part support-expand bearing disk machine. The upper end of an engine shell is provided with a connecting pipe, the engine shell is internally provided with a hydro cylinder. A piston and a piston rod are installed inside the hydro cylinder, the lower end of the piston rod is provided with a fixed supporting disk, three supporting connecting rods are arranged on the supporting disk, and the lower ends of the supporting connecting rods are provided with adjusting bolts which are fixed on a base. In working time, the piston inside the cylinder is controlled to move by a hydraulic control cabinet, further an upper support-expand plate and a lower support-expand plate are ejected out of the engine body by the piston rod, and soil out of support-expand holes outwardly stretches to form prisms and hexahedrons. The utility model has the advantages of smart design, unique structure, saving energy, reduced consumption, low costs and high efficiency.