The invention discloses a multi-shaft same-direction linkage mechanism of a main shaft seat. The multi-shaft same-direction linkage mechanism comprises a motor
assembly, a synchronous belt, an even number of transmission shaft assemblies, first tensioning bearings, transmission shaft synchronous wheels and second tensioning bearings, wherein the motor
assembly is provided with a driving motor, and the first tensioning bearings and the second tensioning bearings are used for tensioning the synchronous belt; the number of the transmission shaft assemblies is greater than 10, each transmission shaft
assembly is connected with one transmission shaft synchronous wheel, the transmission shaft assemblies in the even number are arranged in rows, thus the transmission shaft synchronous wheels are arranged in rows, two sides of each row of the transmission shaft synchronous wheels are respectively provided with one first tensioning bearing, and one second tensioning bearing is arranged between every two transmission shaft synchronous wheels; the synchronous belt is connected with the motor assembly, the first tensioning bearings, the transmission shaft synchronous wheels and the second tensioning bearings, and the synchronous belt is of a tensioned
closed loop structure; transmission shafts of the transmission shaft assemblies are driven to rotate in the same direction through the synchronous belt and the transmission shaft synchronous wheels by the driving motor. By adopting the structure, according to the multi-shaft same-direction linkage mechanism of the main shaft seat, disclosed by the invention, the same-direction rotating consistency of the transmission shafts is good, medium and high speed operation is realized, the
noise is low, and the starting and the stopping are smooth and stable.