Brush Roller Drum Segment Mounting With Axially Movable Nut

A nut is introduced as an intermediary element between the two drum segments. The nut is axially displaceable within a recess in the internal shoulder, allowing it to serve as a mediator that receives the screw from the external shoulder without requiring precise alignment between the screw and a threaded hole in the internal shoulder. This intermediary component resolves the alignment difficulty while maintaining rigid connection.

The mounting arrangement is segmented into distinct functional components: the external shoulder with radial through hole, the internal shoulder with recess, and the nut as a separate movable element. This segmentation allows each component to perform its specific function independently, with the nut being axially displaceable to receive the screw, thereby simplifying the overall assembly process.

The nut acts as an intermediary that eliminates the need for a threaded hole in the internal shoulder. Instead of requiring precise alignment between the screw and a threaded hole, the screw passes through the external shoulder and into the nut, which is axially displaceable within the recess. This maintains rigid connection through the nut-screw thread engagement while eliminating alignment precision requirements.

The problem of alignment in the radial direction is resolved by introducing axial movement freedom. The nut is constrained radially by the recess walls but is free to move axially, allowing it to receive the screw from the external shoulder without radial alignment requirements. This dimensional freedom transforms a 2D alignment problem into a 1D axial positioning problem.