Combined tensile experimental device

The invention relates to a combined tensile experimental device. The combined tensile experimental device comprises a rectangular frame-type experiment table, a mechanical hand wheel loading device (3), a force sensor and an ergometer (4), an upper pull head (5-1), a lower pull head (5-2), a test piece (6) and a universal joint device (7), wherein the mechanical hand wheel loading device (3) is arranged on a top beam (2) of the rectangular frame-type experiment table; the lower part of the mechanical hand wheel loading device (3) is connected with the force sensor and the ergometer (4); the upper pull head (5-1) is respectively connected with the force sensor and the ergometer (4) and the test piece (6); the lower pull head (5-2) is respectively connected with the test piece (6) and the universal joint device (7); and the universal joint device (7) is fixed on a bottom beam (1) of the rectangular frame-type experiment table. The experimental device has a simple structure and is high in composability, dexterou