Takraf Gmbh

Karsten Ebenhan

Burkhard Petack

Patrick Neufeldt

Marko Schmidt

Meinhard Frangenberg

The present invention relates to a crushing roll for a roll-type crusher has a shaft with at least one groove extending in the axial direction on its lateral surface, to receive formed elements. The formed elements serve to retain the crushing shells, for which purpose the formed elements form a form-interlockingly engaging combination with the groove in the shaft, in the radial direction. A 'form-interlockingly engaging combination in the radial direction' is understood here to signify means of blocking of movement of the formed elements in the radial direction of the shaft. In this way, it is possible to anchor the crushing shells in the grooves by means of the formed elements. Advantageously, also axial forces from the crushing shells can be transmitted to the shaft via the formed elements in the grooves, which forces can thereby be borne by the shaft, given that a high pressing force can be transmitted via the combination of a crushing shell and formed element, resulting in high holding friction between the molded element and the shaft.

Crushing roll for a crusher

The present invention relates to a machine frame for a roll crusher that has two side walls and two end walls, where the mentioned end walls accommodate the storage of the rolls. The end walls are split horizontally in the area of the mounting of the rollers, and vertically between the mountings of the upper part. One advantage is that to remove a roller, removal of the respective upper end wall is sufficient. In a preferred embodiment of the invention, the adjacent upper parts of the end walls do not touch. An advantage of this is that tilting of the end wall upper parts among each other or in contact with the side walls is prevented during removal. Furthermore, the gap resulting from the distance between the front wall upper parts in the preferred embodiment would be sealed, with the advantage that no material and dust can exit.

Machinery frame for a roller crusher

The present invention relates to a wear-resistant hard body that includes, at least partially, a high-strength, iron-based alloy, and preferably includes an external shell or sleeve made of another material. The hard body can be made by casting a molten iron-based alloy into the shell or the sleeve. The iron-based alloy can be an FeCrMoVC alloy. The shell or sleeve can be made of steel, copper, or a copper alloy. Methods for producing the wear-resistant hard body or for producing hard bodies or side-wear protection elements for a roller of a roller press are also disclosed. A roller for a roller press that includes at least one wear-resistant hardy body as described herein is also disclosed.

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Dresden, Germany

Karsten Ebenhan