A clamping device for engine parts grinder and its three-point clamping structure and swing controlling structure, the claming device utilizes the three-point clamping structure to fix the workpiece stably and controls an operation element of the swing controlling structure pivotally, such that a helical groove of the operation element will move a driven protrusion of a pressing unit up and down, and a cam portion of the pressing unit will rotate to make an abutting element press the workpiece downwardly or release the workpiece. At that time, the helical groove and the pressing unit will be self-locked, and the cam portion will produce a stop force by the spring force. Thereby, such a device can clamp the workpiece stably and is convenient to use.本發明提供一種植栽自動培植管理系統,其主要是透過埋設於培育介質內的感應單元直接感測培育介質的各種屬性,感測後再與控制單元內的標準數值比對,最後依據比對後的差異進行控制,藉此確保培育介質的環境維持於標準的生長狀況,提高收成效益,且在天候狀況改變時本發明能視天候造成的狀況同步改變灌溉數值,確保在不同的天候狀況下仍能維持相同的生長環境;藉此,本發明能降低人力成本而又能維持與人力培植相同的水準,提高收成經濟效益。10‧‧‧灌溉單元11‧‧‧水份供應單元12‧‧‧營養供應單元13‧‧‧肥料供應單元20‧‧‧感應單元21‧‧‧濕度感應器22‧‧‧酸鹼值感應器23‧‧‧化學物質感應器24‧‧‧溫度感應器30‧‧‧控制單元31‧‧‧比對單元32‧‧‧植物屬性資料庫33‧‧‧控制器34‧‧‧記憶單元40‧‧‧異常通報單元
