The utility model relates to a self -conveyor feed, including hopper, feed bin and hob, the discharge end of hopper with the feed bin intercommunication, the hob includes first pole section, is equipped with helical blade's second pole section and shaft coupling, first pole section sets up outside the feed bin, second pole section partly sets up in the feed bin, the coupling joint first pole section with second pole section just is located outside the feed bin. During this was open, because second pole section pole section first relatively can dismantle, and the holistic length of the relativehob of length of second pole section will lack a lot, and consequently, when changing the hob, the discharge end that can directly follow the feed bin takes out the change with second pole section can. This openly can be avoided frequent and dismantle the self -conveyor feed parts damages that cause.