This creation be related what one kind plant seedlings watering machinery auxiliary wheel adjustment apparatus structure,Auxiliary wheel adjustment device system sets what and plants seedlings the rack Hou end of watering machinery,And auxiliary wheel adjustment device include opposite pin joint seat,Follower lever,First fixed frame,Second fixed frame,Sliding seat and a shaft are formed,Its shaft is worn between each pin joint seat of what,And the both ends of shaft are respectively equipped with to referred to as actuating arm,And a force application rod is separately set,And each actuating arm system is pivotally connected a follower lever,And follower lever another end system and first fixed frame the second fixed frame articulated section pivot are solid,Its second fixed frame another end pivot is consolidated on the lug of what rack Hou end,And the first fixed frame another end pivot is consolidated on the lug of one sliding seat of what,An auxiliary wheel is equipped with below its sliding seat,And the linking part system pivot of movable front edge of board two sides consolidates what and plants seedlings on the joint seat of watering machinery Hou end,Thereby structure can adjust the driving wheel of the padded watering machinery that plants seedlings of device using auxiliary wheel,The watering machinery that makes to plant seedlings arbitrarily can not move person.本創作係有關於一種植苗澆水機之輔助輪調整裝置結構,該輔助輪調整裝置係設於植苗澆水機之機架後端,而輔助輪調整裝置包含有相對之樞接座、從動桿、第一固定架、第二固定架、活動座及一軸桿所組成,其軸桿穿設於各樞接座之間,且軸桿之兩端分別設有對稱之驅動臂,並另設一施力桿,而各驅動臂係樞接一從動桿,且從動桿另端係與第一固定架第二固定架樞接處樞固,其第二固定架另端樞固於機架後端凸耳上,而第一固定架另端樞固於一活動座之凸耳上,其活動座下方設有一輔助輪,而活動板前端兩側之連結部係樞固於植苗澆水機後端連結座上,藉此結構可利用輔助輪調整裝置墊高植苗澆水機之驅動輪,使植苗澆水機可任意移動者。