The invention discloses a universal test
machine, belonging to a detection device, which structurally comprises a worktable, a pedestal, columns, a screw, an upper crossbeam and a lower crossbeam. A lower end of the screw is fixedly arranged on the pedestal by nuts, an upper end of the screw passes through the worktable to be connected with the lower crossbeam, an oil cylinder is arranged on the upper part of the pedestal, a
piston is arranged in the oil cylinder, the upper end of the
piston is connected with the worktable,
hydraulic pressure clamp systems are respectively arranged in the upper crossbeam and the lower crossbeam, each
hydraulic pressure clamp
system comprises a jaw plate and a jaw, the columns comprise four columns, lower ends of the four columns are respectively and fixedly arranged on the worktable, upper ends of the four columns are respectively fixedly arranged on the upper crossbeam, the upper crossbeam and the lower crossbeam are respectively of semi-
open type structures, and the jaw plates are matched with the jaws in a dovetail way. The universal test
machine has the characteristics that rigidity of a mainframe is greatly increased; by the adoption of the semi-open typed structures for the upper crossbeam and the lower crossbeam, rigidity is increased, deformation is not easy to occur, and cost is lowered; and clamp centering degree of the upper crossbeam and the lower crossbeam is increased, and test accuracy is increased and the like.