Speed reduction driving device

The utility model provides a speed reduction driving device. The device comprises a driving motor and a transmission gearbox, the transmission gearbox comprises an intermediate shaft and an output rod; an output shaft of the driving motor is fixedly sleeved with a driving gear; the driving gear is meshed with a first driven gear sleeved on the intermediate shaft and a second driven gear fixedly sleeved on the output rod; the output rod is fixedly sleeved with the output gear, the output rod is fixedly sleeved with the positioning gear, the positioning gear is meshed with the positioning gearbox, the positioning gearbox drives the sensor at the tail end to rotate, and when the output gear moves by one stroke, the sensor rotates by less than one circle. The utility model provides a speed reduction driving device which is used on an electric seat of a high-speed rail, can realize acquisition, control and adjustment accuracy of the rotation angle position of the seat, and is high in reliability. 本实用新型提供一种减速驱动装置，包