Multi-position stroke control device

The utility model relates to a multi-position stroke control device which comprises a bottom plate, a trigger plate and a proximity switch, a supporting assembly is arranged on the upper surface of the bottom plate, a transmission assembly is installed on the supporting assembly, the transmission assembly is connected with the output end of a lifting power device of a heating furnace door, and the transmission assembly comprises a worm wheel shaft. One end of the worm wheel shaft is fixedly connected with a rotating disc, a trigger plate is installed on the rotating disc, one end of the trigger plate is located outside a plane formed by rotation of the rotating disc, and the supporting assembly comprises a proximity switch mounting frame fixedly connected to the upper surface of the bottom plate; a proximity switch matched with the trigger plate is mounted on the proximity switch mounting frame through a proximity switch fixing plate. The lifting device has the beneficial effects that a plurality of lifting s