Synchronous power device applied to electric bicycle performance test platform

The invention relates to a synchronous power device applied to an electric bicycle performance test platform. The device comprises a base, a driving roller and a driven roller. The driving roller andthe driven roller are arranged inside the base with an adjustable interval. A positioning gear is arranged on the base. A drive motor is arranged on one side of the driving roller, and a driving gearis arranged on the other side. A driven gear is arranged on one side of the driven roller. A number of tensioning wheels are arranged on both sides of the driving gear. The driving gear, the tensioning wheels, the positioning gear and the driven gear are in transmission connection through a rack synchronous belt. The synchronous power device can reduce the horizontal static friction force appliedto a wheel when front and rear rollers rotate under the precondition of ensuring the power of front and rear rollers. The total length of a transmission belt is shortened. The problem of fatigue stretch caused by multiple uses