The rotation speed of some working parts of farm implements will change with the change of tractor speed, that is, to achieve synchronization. For example, the seed metering component of the seeder, the seed discharging speed should be proportional to the tractor speed, so as to ensure even seeding. For this purpose, the power of the power take-off shall be led out from the rear of the second shaft of the gearbox to synchronize with the driving wheel of the tractor. At the first three types of power output shaft adapters, a pair of gears can be added as required. The fixed gear is installed on the transmission shaft behind the second shaft of the gearbox. The adapter moves forward at the standard speed and backward at the synchronous output. The synchronous power take-off is a non independent type of operation. The unit is the number of revolutions of the output shaft per unit driving distance of the tractor (r/m). Synchronous output is adopted. When the tractor is backing up, the power output shaft will reverse and the working parts of the farm implement will also reverse. Therefore, the adapter should be shifted to neutral before backing up. Synchronous power take-off is required in revolutions per meter. However, when the tractor skids seriously, it will affect the working quality of the equipped agricultural machinery.
Some tractors have these two output modes. During synchronous output, the output shaft only rotates when the tractor is moving, and has a constant speed ratio. The output shaft speed of each gear is different. The independent output has nothing to do with whether the tractor is moving. As long as the engine is ignited and the output shaft is combined, the output shaft will rotate. No matter what gear you select, the speed of the output shaft will only change with the engine speed. The independent output generally adopts two speed power output (540r/min, 1000r/min).
