PROBLEM TO BE SOLVED: To provide an abnormality determining device of an egg holding and discharging mechanism of a distribution conveyor in an egg screening and collecting device capable of easily specifying an opening means and a holding means in abnormal states even if any abnormality occurs in the opening means and the holding means.SOLUTION: Information on the correspondence of each holding means and an opening means applied to each holding means is stored, and it is detected that an egg cannot be discharged and collected to an original predetermined place, but carried over by the holding means, and the information on correspondence between the holding means and the opening means to be applied is read. Any abnormality is determined on the read holding means and the opening means which are read based on the information of correspondence between the holding means and the opening means which are read, and information on the past reading of the holding means and the opening means which are newly read.COPYRIGHT: (C)2010,JPO&INPIT【課題】 開放手段や保持手段に異常が発生しでも異常の開放手段や保持手段の特定を容易に行うことができる、卵選別集合装置における分配コンベアの卵保持放出機構の異常判定装置を提供する。【解決手段】 各保持手段と各保持手段に作用すべき開放手段の対応関係情報を記憶するとともに、本来の所定場所に卵を放出集合することができずに保持手段により持ち越し搬送されたことを検出し、当該保持手段と作用すべき開放手段の対応関係情報を読み取る。読み取られた当該保持手段と開放手段の対応関係情報と、新たに読み取られた当該保持手段と開放手段のそれぞれの過去の被読み取り履歴情報とに基づいて、読み取られた当該保持手段と開放手段についての異常の判定を行う。【選択図】 図2
