The invention provides a worm-
gear transmission system of a reel irrigator, and belongs to the field of agricultural water-saving
irrigation. The worm-
gear transmission system comprises a transmission body, a first-grade worm-gear power
train, a second-grade fixed axis
gear train, a third-grade fixed axis
gear train, a manual recycling
gear train and a gear shifting device. According to the worm-
gear transmission system, through control of the position of a shifting fork in the gear shifting device, the worm-gear
transmission system achieves gear 1, gear 2, neutral gear and manual recycling speed regulation
modes; a brushless
direct current motor replaces a
water turbine to output power, so that the
power performance of a
prime mover is improved; and worm-gear transmission replaces parts of straight toothed
spur gear transmission, so that the
transmission ratio of the reel irrigator is increased, the transmission efficiency of the reel irrigator is improved, the size of a transmission is decreased, and the technical problems that under the low-speed operation condition of a traditional reel irrigator, the
water turbine is insufficient in
power performance and low in efficiency, a traditional transmission has multiple grades and is low in
transmission ratio, large in size and low in efficiency, and the like are solved.