This paper has introduced a worm gear and transmission system combined with planetary gear which can be used on the small walking transplanter transmission. The power is input from sun gear of planetary gear , output from？planet easel. Gear and worm gear combine as a whole making the planetary mechanism moving in variable speed under the electric worm control. It can be drove directly by mechanical transmission and steering controlled by electric. A worm gear and the planetary gear transmission mechanism modelhave been analyzed to verify the f...
