| 摘要 |
PURPOSE:To eliminate a sliding caused between a roller and a chain, and secure rotation of a corner roller by arranging projecting parts in places coming into contact with a link chain on the peripheral surface of the corner roller whose curvature is set approximately in the same with the inner peripheral surface of a conveyor corner part. CONSTITUTION:An inside curved part 12 is opened on the corner part inner wall 11 in a part corresponding to an elbow pipe 2 curved in an approximate L shape, and an installing case part 13 enlarged outward is arranged so as to cover this, and a hand drum shape corner roller 14 is arranged in this case part 13 so as to be rotatable freely around the shaft center. The peripheral surface 14a of the roller 14 is formed in an arc shape recessed surface so as to be fitted to an inside diameter of a pipeline. Filament projecting parts 40 extending in a shaft direction are arranged respectively in positions set by dividing the central part outer periphery of the roller 14 by integral times of the pitch of an endless chain 5. Thereby, since the corner roller 14 is formed apparently in a polygon, a slide with the chain 5 can be eliminated, so that the roller 14 can be rotated forcibly.
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