Flail assembly for a straw chopper shaft with a mounting hole in a bracket and such a straw chopper shaft

A flail assembly for a straw chopper shaft with a mounting hole in a bracket comprising:

• a bolt element which can be passed through the mounting hole of the bracket,
• an anti-rotation element by means of which the bolt element can be supported on the bracket against rotation,
• a first flail having a bore with which the first flail is seated on the bolt element,
• a first fastening element connected to a first free end portion of said bolt element, and
• a first washer having a bore with which the first washer sits on the bolt element, the first washer being disposed between the first fastening element and the first flail,
• wherein the first washer is radially slotted, and
• wherein the bolt element is axially braced with the first fastening element and the first washer with respect to a longitudinal axis of the bolt element, and
• wherein a smallest cylindrical envelope of the first fastening element, coaxial with the longitudinal axis of the bolt element, has a smaller radius than the bore of the first flail,
• wherein the bolt element has a first securing shoulder, the cross-section of which differs from a circular shape, and
• wherein the anti-rotation element has a first opening which is designed complementary to the first securing shoulder and receives the first securing shoulder in a rotationally fixed manner in the assembled condition.

A flail assembly for a straw chopper shaft with a mounting hole in a bracket comprising:

• a bolt element which can be passed through the mounting hole of the bracket,
• an anti-rotation element by means of which the bolt element can be supported on the bracket against rotation,
• a first flail having a bore with which the first flail is seated on the bolt element,
• a first fastening element connected to a first free end portion of said bolt element, and
• a first washer having a bore with which the first washer sits on the bolt element, the first washer being disposed between the first fastening element and the first flail,
• wherein the first washer is radially slotted, and
• wherein the bolt element is axially braced with the first fastening element and the first washer with respect to a longitudinal axis of the bolt element, and
• wherein a smallest cylindrical envelope of the first fastening element, coaxial with the longitudinal axis of the bolt element, has a smaller radius than the bore of the first flail,
• wherein the bolt element is one piece with the anti-rotation element and has a supporting surface which, in the assembled condition, is supported on the bracket of the straw chopper shaft in the circumferential direction, relative to the longitudinal axis of the bolt element.