Assembly for attachment to a milling machine and a milling machine

摘要

A closure device (10) for a containment wall shaft opening (1) is adapted to enclose a cutter drum assembly (3) for a milling machine (M), the assembly (3) including a drive shaft (5) for rotating a cutter drum (4). The drive shaft extends through the shaft opening to connect the drum with a mainframe (F). The shaft and the wall are vertically displaceable relative to each other. A barrier member (12) is movably coupled with the mainframe so as to be pivotable about an axis (13) fixed with respect to the drive shaft and is disposeable against the containment wall to prevent material flow through the shaft opening. A coupler (14) or linkage (50) is configured to movably couple the barrier member with the containment wall such that relative vertical displacement between the drive shaft and the containment wall angularly displaces the barrier member about the barrier axis as the position of the drive shaft within the shaft opening is varied so that the barrier member extends across and at least partially obstructs the shaft opening.