Auxiliary walking wheel suitable for small paddy field robot and small paddy field robot

The invention discloses an auxiliary walking wheel suitable for a small paddy field robot and the small paddy field robot. The auxiliary walking wheel comprises a support, a mounting shaft arranged at the lower end of the support, a roller rotationally arranged on the mounting shaft and used for walking, and a drainage mechanism arranged in the roller and used for draining water in the roller out of the roller. Wherein the drainage mechanism comprises a water suction pump arranged on the mounting shaft, and a water inlet of the water suction pump vertically extends downwards. The auxiliary walking wheel can stably walk in a paddy field, the phenomena of mud sinking and side inclination are avoided, and the escape capacity of walking in the paddy field is improved. 本发明公开一种适用于小型水田机器人的辅助行走轮及小型水田机器人，该辅助行走轮包括支架、设置在所述支架下端的安装轴、转动设置在所述安装轴上用于行走的滚筒以及设置在所述滚筒内的用于将滚筒内部的水排出滚筒外部的排水机构；其中，所述排水机构包括设置在所述安装轴上的抽水泵，所述抽水泵的进水口竖直向下延伸。该辅助行走轮能够在水田中稳定行走，不会发生陷泥和侧倾的现象，提高了在水田中行走的脱困能力。