Patent EA-004833-B1 (EA)
Title: Beating arrangement
Inventor: DOPPSTADT WERNER
IPC: B02C18/18
Filed: 2002-01-08
Abstract: 1. Swinging flail mallet for rotor shredders, comprising (a) a base body (12) having a pivot bearing (18), by means of which the flail mallet (10) is mounted on a rotor for rotation about a pivot axis parallel to the rotor axis, and having a surface at the front, with respect to the direction of rotation, extending over the total width of the base body (12) and forming a step and a plane surface (34) contiguous therewith , which defines a reduced-thickness plate-like end portion (22) of the base body (12), (b) a cutting body (16), which also extends across the total width of the base body (12) and has a base, defining a plane base surface (26) and having wedge-shaped cutting ledges of triangular cross section projecting at the two ends thereof and having cutting edges (30,32) parallel to the pivot axis, and (c) means for attaching the cutting body (16) to the base body (12) such that the plane base surface (26) lies on the plane surface (34) of the step, characterized in that (d) the cutting edges have plane outer surfaces extending at an angle outwards, contiguous to the base surface (26) of the base, (e) an outer one of the cutting edges projecting at an angle outwards beyond the plane base surface of the base project, with their cutting edge (30), beyond the outer end of the base body (12) remote from the pivot axis, (f) a projection (50) is formed on the plane surface (24), the cutting body (16) being placed thereon with a complementary recess in its base surface (26) of the cutting body (26), (g) the cutting body (16), with the outer surface of its inner cutting edge and its base surface (26) , lies form-fittingly on the step of the base body (16), whereby the cutting body (16) is closely engaged, on two sides, by the base body. 2. Flail mallet assembly according to claim 1, characterized in that the profile has the form of a projecting truncated pyramid, its base area laying in the plane of the front surface of the projection. 3. Flail mallet assembly according to claim 1 or 2, characterized in that the cutting body is provided with two cutting edges symmetrical to a plane extending tangential to a rotational circumference. 4. Flail mallet assembly according to one of the preceeding claims, characterized in that the cutting body is screwed by means of a screw extending through the middle of the cutting body and through the profile. 5. Flail mallet assembly according to claim 4, characterized in that the base body has a recess at the in the direction of the rear surface, with respect to the rotation, of the projection, wherein a nut for the screw can be embedded. 6. Flail mallet assembly according to claim 4, characterized in that the cutting body is provided with a recess at the in the direction of the front surface, with respect to the rotation, wherein the head of the screw can be embedded. 7. Flail mallet assembly according to one of the proceeding claims, characterized in that the surface of the cutting body is chamfered at the side opposite to the axis of rotation and is aligned with the chamfered side of the base body opposite to the axis of rotation, when the cutting body is fixed to the base body. 8. Flail mallet assembly according to one of the proceeding claims, characterized in that the cutting edge of the cutting body is hardened.