Circular sample clamping instrument of three -point bending

The utility model is used for the clamping of circular bent test sample sample when three -point bending test. The utility model relates to a circular sample clamping instrument of three -point bending. The device includes that this anchor clamps main part includes the lantern ring (2), fastening screw (3) on the lantern ring in addition, fastening screw (4) on the square billet, square billet connecting bolt (5), mobilizable square billet (6). In putting crooked circular sample into two lantern rings, fix crooked circular sample in the lantern ring through the fastening screw on the lantern ring. Mobilizable square billet through linking to each other with the lantern ring is put crooked circular sample on the three -point bending anchor clamps smoothly. Apply load through the testing machine pressure head to the circular sample of bending, bent test sample does not produce and skids, the accuracy of assurance test data. The square billet that sample fracture back and sample are connected is folding along wi