Kiln bottom ash discharge device

The utility model discloses a kiln bottom ash discharge device which comprises an oil cylinder, an oil cylinder piston rod, a trolley part and a limiting device for controlling the trolley part to reciprocate, wherein the limiting device comprises a guide frame, an adjusting plate, a vertical support as well as a sensing position and limiters which are located in a room temperature zone; the guide frame penetrates through the kiln wall at the upper part of the oil cylinder, one end, located in the room temperature zone, of the guide frame is T-shaped, the sensing position is arranged at the top end and corresponds to the limiters arranged on the left side and the right side of the kiln wall; one end, located in a high temperature zone, of the guide frame is F-shaped, an F-shaped bump at the top end penetrates through a strip-shaped hole in the adjusting plate and adopts inlaying connection; the adjusting plate is fixedly connected with the vertical support, and the vertical support is fixedlyconnected with a frame of the trolley part. The kiln bottom ash discharge device is simple in structure, low in manufacture cost, easy to process andconvenient to mount, increases the production efficiency greatly and reduces the productioneconomic cost.