Tension-torsion loading tooling and tension-torsion loading test system thereof

A tension-torsion loading tooling, comprising a connector, a clamping head, and a connecting rod assembly, wherein the connector is used for being clamped by an upper loading head of a tensile testing machine, the clamping head is used for clamping one end of a testing piece, and the other end of the testing piece is used for being clamped by a lower loading head of the tensile testing machine;

• the connecting rod assembly comprises four horizontal connecting rods, and four inclined connecting rods;
• the four horizontal connecting rods are sequentially connected from end to end to form a parallelogram structure, and hinge axes of the four horizontal connecting rods are vertically arranged;
• two of the four horizontal connecting rods are longer than the other two, and each of four diagonal corners of the parallelogram structure is hinged with one end of each of the four inclined connecting rods;
• the other ends of the inclined connecting rods on two of the diagonal corners are hinged with the connector, and a hinge axis of a hinge point of the connector is horizontal, and perpendicular to a connecting line between two corresponding diagonal corners;
• the other ends of the inclined connecting rods on the other two diagonal corners are hinged with the clamping head, and a hinge axis of a hinge point of the clamping head is horizontal, and perpendicular to a connecting line between two corresponding diagonal corners.