PROBLEM TO BE SOLVED: To provide a bearing structure of a spiral type transport device capable of securing retention of a liner.SOLUTION: A bearing structure of a spiral type transport device includes: two spiral shafts 40, the shaft centers of which intersect each other a connection metal 100 which rotatably supports the spiral shafts 40 with gears provided on the spiral shafts, respectively, meshing with each other, and is divided into two parts on a plane passing the shafts centers of two spiral shafts 40 and formed by casting an abrasion preventive liner 140 which is formed in a curve along a part located outside in the radial direction of the spiral shaft 40 in the inner peripheral surface 108 of the connection metal 100, mounted to the part, and made of material having a higher strength than the material for forming the connection metal 100 a fit part 141 formed on the abrasion preventive liner 140 and projected outwardly from the abrasion preventive line 140 and a liner mounting groove 111 formed on the inner peripheral surface 108 of the connection metal 100, which the fit part 141 enters in mounting the abrasion preventive liner 140 to the inner peripheral surface 108.COPYRIGHT: (C)2014,JPO&INPIT【課題】ライナーの保持性を確保することのできる螺旋式搬送装置の軸受構造を提供すること。【解決手段】螺旋式搬送装置の軸受構造に、軸心が互いに交差する2つの螺旋軸40と、螺旋軸40に夫々設けられるギヤを噛み合わせた状態で螺旋軸40を回転可能に支持し、2つの螺旋軸40の軸心を通る平面上で2つに分割して鋳造により形成される接続メタル100と、接続メタル100の内周面108における螺旋軸40の径方向の外方に位置する部位に沿って湾曲して形成されると共に、当該部位に装着され、接続メタル100を形成する材料よりも強度が高い材料からなる防摩耗ライナー140と、防摩耗ライナー140に形成され、該防摩耗ライナー140から外方に突出しているはめ込み部141と、接続メタル100の内周面108に形成され、当該内周面108への防摩耗ライナー140の装着時にはめ込み部141が入り込むライナー装着溝111と、を備える。【選択図】図18
