High-universality modular fixing device for testing of torsion rod spring

The invention belongs to the field of torsion rod spring testing, and specifically relates to a high-universality modular fixing device for the testing of a torsion rod spring. The device comprises a high-universality flange connection disc, a modular spline connection disc, an elastic transition flange plate, and an axial fixed connection disc. According to the technical scheme of the invention, the elastic transition flange plate and the high-universality flange connection disc are fixed, and the modular spline connection disc is adjusted and replaced, so as to fix and assemble torsion rod springs of different spline types and sizes. The technical scheme of the invention solves a problem that there is short of a high-universality modular tool device for the testing of the torsion rod spring, and the accuracy of measurement data is guaranteed. The specific modular spline connection disc can meet the assembly requirements of different types of torsion rod springs, and the device can improve the testing effici