Abstract: A return roller is pivotally supported in a frame-fixed articulation region (20, 21) of a belt conveyor device having a transport belt. A pivot arm (30, 31) extends in a running direction (L) of the transport belt, orthogonal to a longitudinal axis (12) of the return roller, supporting it about the longitudinal axis. A pivot element (40) is spaced apart from the return roller in the running direction. A pivot bearing (22, 23) is arranged on the articulation region for mounting the pivot element for a pivoting movement of the pivot arm around a pivot axis between an operating position and an nonoperating position of the return roller. A bearing surface (24, 25), in a section perpendicular to the pivot axis, is formed as an open arc, with an opening (26, 27) having a center angle (?) of less than 180°.

Abstract: A return roller is pivotally supported in a frame-fixed articulation region (20, 21) of a belt conveyor device having a transport belt. A pivot arm (30, 31) extends in a running direction (L) of the transport belt, orthogonal to a longitudinal axis (12) of the return roller, supporting it about the longitudinal axis. A pivot element (40) is spaced apart from the return roller in the running direction. A pivot bearing (22, 23) is arranged on the articulation region for mounting the pivot element for a pivoting movement of the pivot arm around a pivot axis between an operating position and an nonoperating position of the return roller. A bearing surface (24, 25), in a section perpendicular to the pivot axis, is formed as an open arc, with an opening (26, 27) having a center angle (?) of less than 180°.