Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: The wear-resistant hard body according to the invention consists, at least partially, of a high-strength, iron-based alloy (IFW), and preferably comprises an external shell or sleeve made of another material. Roller press rollers usually have a bandage, often referred to as a roller body, in which the hard bodies are inserted as grid armoring. Particularly preferably, the hard body has a trilaterally closed, external shell. Advantageously, the hard body thus hardly needs any processing to ensure that it fits into the hole in the bandage, as the shell already does. Thus, a defined fit between the bandage and the shelled hard body is made possible. The hard bodies according to the invention with a shell or a sleeve are also referred to as bimetallic studs. Particularly preferably, the wear-resistant hard bodies furthermore have a circular cylindrical shape. Here, the closed front end of the shell, which in the installed state faces the center of the roller, is preferably shaped in a rounded fashion.

Abstract: 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.