Elastic side bearing constitution system of railway vehicle

The utility model discloses an elastic side bearing constitution system of a railway vehicle. The elastic side bearing constitution system comprises a side bearing, a side bearing block, a first spherical hinge assembly, a connection rod and a second spherical hinge assembly, the side bearing is connected with the side bearing block through the first spherical hinge assembly, the connection rod and the second spherical hinge assembly, the first spherical hinge assembly is arranged on the lower side of one end of the side bearing body, the second spherical hinge assembly is arranged on the upper side of the portion, at the end different from the end where the first spherical hinge assembly is located, of the side bearing block, the first spherical hinge assembly is connected with the second spherical hinge assembly through the connection rod, side bearing springs are arranged between the side bearing and the side bearing block, check blocks are arranged on the upper side of the side bearing block, the side bearing springs penetrate through the check blocks to be connected with the side bearing and the side bearing block respectively, and a side bearing wearing plate is arranged on the upper side of the side bearing. Compared with the prior art, the system can guarantee that no longitudinal gap exists between the side bearing and the side bearing block when the vehicle is used, performance is stable, the side bearing cannot be worn, reliability is high, a large stroke is obtained, pre-compression amount of the elastic side bearing is increased, work stability of the elastic side bearing is further improved, and the system has the advantages of being simple and compact in structure and convenient to install.