Inner compartment`s e.g. fixed concrete mixer drum, discharge gate for closing opening in fixed concrete mixer drum`s base wall, has opening joined by hinge to frame, and joint ensuring sealing at level of hinge between opening and frame

摘要

The gate has an opening frame (3) joined by a hinge (4) to a door frame (5). The hinge has a rotating joint (6) that ensures a sealing at the level of the hinge between the opening and the frame. The joint has a sliding cylinder (7) having a revolutional axis coaxial with a hinge`s rotational axis and extends on the length of the hinge, where the hinge and the cylinder are situated at an outside of an inner compartment e.g. fixed concrete mixer drum. A flexible longitudinal joint (8) has an axis parallel to the rotational axis and is situated at a constant radius (R) with respect to the hinge.