Extension fastening system for mounting a levelling bottom extension, on a screed

摘要

A screed assembly (59), comprising:a screed (18) with a lateral extension shaft, which an extendable frame part (26), which can be extended along the lateral extension shaft and is pivotable relative to a pivot axis, which is perpendicular to the lateral extension shaft, wherein the extendable frame part (26) with a hook engagement surface (62) of an extension fastening system (60); anda levelling boards extension (50) with a levelling boards extension frame (52), of a fastening hook (64) of the extension fastening system (60) carries;the extendable frame part (26) in a mounting configuration about the pivot axis in a first direction is pivoted into a recessed mounting position, and wherein the extendable frame part (26) axially to an extended mounting position is extended, in which the hook engagement surface (62) and the fastening hooks (64) are vertically aligned;the extendable frame part (26) in a raised configuration about the pivot axis in a second direction is pivoted to a lifted position, whereby the hook engagement surface (62) and the fastening hooks (64) are in fitting engagement, and wherein the levelling boards extension (50) to the extendable frame part (26) with the use of the extension fastening system (60) is supported.