The drying trolley goes to the discharge device by return rail, which use top rod to life up the upper box of drying trolley and the press plate presses under-frame. Through cylinder separates the upper box and under-frame, the under-frame will move by return rail, and then upper part of drying trolley is down by manual reversing value via unload oil.
Cooperating with drying trolley and return rail. The drying trolley is transported to the hydraulic discharge device through the return rail,and separating the upper box and under-frame of drying trolley by discharge device.