Stop log door device

The invention discloses a stoplog door device, belongs to the technical field of water conservancy and hydropower engineering, and can solve the problems that a traditional stoplog door is complex in overhaul process, long in operation time, low in efficiency and many in risk factor. The device comprises a gate groove formed in a water intake of a dam body, a stop log gate is arranged in the gate groove, and the stop log gate is composed of a plurality of small stop log gates which are arranged in a stacked mode; the locking unit is arranged on the bottom face of the downstream side of the gate groove and used for locking the positions of all the stop log small gates on the upper portion of the stop log small gate to be overhauled. The pushing unit is arranged on the downstream face of the gate groove and used for pushing the stop log small gate to be overhauled to the upstream side of the gate groove. The door bearing unit is arranged on the bottom face of the upstream side of the door groove and used for su