Transmission shaft assembly for use in sequential test of flexible thin-walled bearings

A transmission shaft assembly for use in a sequential test of flexible thin-walled bearings, the transmission shaft assembly comprising a power connecting member, a clamping device and a plurality of bearing mounting kits that are connected in sequence, wherein the bearing mounting kits that are connected in sequence are located between the power connecting member and the clamping device, the clamping device penetrates a central bore of each of the bearing mounting kits and is connected to the power connecting member, and the power connecting member, the clamping device and the bearing mounting kits are connected into one piece;

• the power connecting member comprises a spindle shank and a blind rivet threadedly connected to a front end of the spindle shank, a rear end of the spindle shank is provided with a circular truncated cone connected to the bearing mounting kits, and a center of the rear end is provided with a threaded bore;
• the bearing mounting kit comprises a hollow bearing mounting sleeve seat, a rear retaining ring, a front retaining ring, a bearing locking bolt (7) and a tightening nut, a front end of the bearing mounting sleeve seat is provided with a taper bore, a rear end of the bearing mounting sleeve seat is provided with a frustum, an outer peripheral wall of a middle portion of the bearing mounting sleeve seat is provided with an elliptical shaft shoulder for mounting a thin-walled bearing in interference fit, and the rear retaining ring and the front retaining ring are fixedly arranged on both sides of the elliptical shaft shoulder through the bearing locking bolt and the tightening nut;
• and
• the clamping device comprises a clamping bolt, a washer and a spring washer, the clamping bolt penetrates the spring washer, the washer and the bearing mounting kits in sequence, and a front end of the clamping bolt is connected to the threaded bore at the rear end of the spindle shank through an external thread.