A plate lifting device for a multi-plate device, comprising a motor, a telescopic rod, a limiting plate and a lifting mechanism. The motor is disposed on the base of the multi-plate device, and one side of the telescopic rod is pivoted on the base and connected to the motor to be telescoped by the motor, and the other side has a moving member. The limiting plate connects one of the plates on the multi-plate device and has a slot for the moving member to pass through. The lifting mechanism is disposed on the base. When the motor pushes the telescopic rod to extend from the initial state, the lifting mechanism raises the moving member, so that the plate connected to the limiting plate and the limiting plate is raised and connected. Thereby, the plate body of the multi-plate device can be lifted and lowered more smoothly.一種可用於多板體設備之板體升降裝置，其包含馬達、伸縮桿、限位板以及抬升機構。馬達設置於多板體設備之基座上，而伸縮桿一側樞設於基座上並連接馬達以受馬達推動而伸縮，另一側則具有移動構件。限位板連接多板體設備上之一板體，並且具有槽孔供移動構件穿過。抬升機構設置於基座上，當馬達推動伸縮桿使其自初始狀態開始伸出時，抬升機構抬升移動構件，使限位板及限位板所連接之板體受連動而升起。藉此，多板體設備之板體可更順暢地升降。
