A transport device, in particular, for transporting cooling blocks (5) in a casting machine with caterpillar mold, wherein the transport device includes: a plurality of roller elements (4), which circulate endless in a caterpillar-like manner on a circulating path U and is drivable by a drive device
A transport device, in particular, for transporting cooling blocks (5) in a casting machine with caterpillar mold, wherein the transport device includes: a plurality of roller elements (4), which circulate endless in a caterpillar-like manner on a circulating path U and is drivable by a drive device (33); at least two parallel guide paths (20), each of which includes one or more roller running surfaces (12a, 12b) and each of which extends over the entire circulating path U; wherein each roller element (4) includes a roller element body (34), which has a first end (35) and a second end (36) in the direction of circulation; each roller element (4) includes at least one roller (10) respectively in the area of the first end (35) and in the area of the second end (36); and the rollers (10) situated in the area of the first end (35) of roller element body (34) roll on roller running surfaces (12a, 12b) different from those of the rollers (10) situated in the area of the second end (36) of the roller element body (34).
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1. Transport device for transporting cooling blocks in a casting machine with caterpillar mold, wherein the transport device comprises: a plurality of roller elements, which endlessly circulate in a caterpillar-like manner on a circulating path U and which are drivable by a drive device;at least two
1. Transport device for transporting cooling blocks in a casting machine with caterpillar mold, wherein the transport device comprises: a plurality of roller elements, which endlessly circulate in a caterpillar-like manner on a circulating path U and which are drivable by a drive device;at least two parallel guide paths, each of which comprises one or more roller running surfaces and extends over the entire circulating path U; whereineach roller element comprises a roller element body, which has a first end and a second end in the direction of circulation; andeach roller element comprises in the area of the first end and in the area of the second end respectively at least one roller,wherein the rollers situated in the area of the first end of the roller element bodies roll on roller running surfaces different from those of the rollers situated in the area of the second end of the roller element bodies. 2. Transport device according to claim 1, wherein the roller elements in the direction of the circulation movement are loose relative to one another. 3. Transport device according to claim 1, wherein in the area of the first end and/or in the area of the second end of the roller element bodies joint bearings are situated and respectively at least two rollers are attached to a joint bearing. 4. Transport device according to claim 3, wherein the joint bearings are rotatably attached by way of joint axles to the roller element bodies, wherein the joint axles are situated perpendicular to a center plane of the transport device defined by the circulating path U. 5. Transport device (1) according to claim 4, wherein the roller element bodies measured in the direction of circulation have respectively a maximum length “L” and immediately adjacent roller elements can be positioned on the first and second guide path so that geometrical axes of the roller axles or of the joint axles of the rollers or the joint bearings situated in the area of the first ends of two adjacent roller elements can substantially be adjusted to a distance which corresponds to the maximum length “L”. 6. Transport device according to claim 5, wherein geometrical axes of the roller axles or of the joint axles of the rollers or the joint bearings disposed in the area of the second ends lie in a plane orthogonal to the direction of the circulation movement, having a distance to the plane defined by the first ends of the respective roller element body which is substantially equal to or greater than the length “L”. 7. Transport device according to claim 5, wherein the cooling blocks have a bottom side facing the rollers and a flat cooling surface on the opposite side, and the two parallel planes comprising the geometrical axes of the roller axles or of the joint axles are perpendicular to the cooling surface. 8. Transport device according to claim 4, wherein geometrical axes of the roller axles or of the joint axles of the rollers or the joint bearings disposed in the area of the first ends lie in a plane orthogonal to the direction of the circulation movement, which plane is defined by the first end of the respective roller element body. 9. Transport device according to claim 1, wherein the rollers comprise respectively a roller axle, wherein the roller axles are fixedly attached to the roller element body. 10. Transport device according to claim 1, wherein geometrical axes of roller axles or of joint axles, which are situated at the first and second ends facing each other of two adjacent roller elements in the direction of the circulation movement, are substantially coaxial. 11. Transport device according to claim 1, wherein each roller element body comprises at least one cooling block so that a casting caterpillar is formed, which is suitable as the wall of a casting mold. 12. Transport device according to claim 1, wherein each roller element comprises at least 4 rollers, wherein respectively two rollers are disposed at the first and the second end of each roller element body, and wherein the rollers disposed at the first end are offset in an orthogonal manner to a center plane vis-à-vis the rollers disposed at the second end. 13. Transport device according to claim 12, wherein the two rollers disposed at the first end have a distance A to each other and the two rollers disposed at the second end have a distance B≠A to each other, wherein the distances A and B are sized so that the two rollers disposed at the first end fit between the rollers disposed at the second end of the adjacent roller element. 14. Transport device according to claim 1, wherein the guide paths have at least in one portion of the circulating path U, in which the roller elements would, owing to gravity, fall down from the guide paths, first and second roller running surfaces, which are situated opposite each other. 15. Transport device according to claim 1, wherein the guide paths have deflection arcs and that the guide paths comprise in the area of the deflection arcs first and second roller running surfaces situated opposite each other in the radial direction so that the rollers roll on the first or the second roller running surface, depending on the direction of the load. 16. Transport device according to claim 15, wherein in the area of the deflection arcs of the guide paths respectively a driver wheel is rotatively fixedly attached to a drive axle on each side of the center plane and respectively a drive axle is coaxially situated to a geometrical axis of the deflection arcs. 17. Transport device according to claim 1, wherein the guide paths comprise respectively a first and/or second roller running surface oriented towards a center plane and a first and/or second roller running surface oriented away from the center plane. 18. Transport device according to claim 1, wherein the roller element bodies of the roller elements are designed as cooling blocks and that the rollers are attached at the cooling blocks. 19. Transport device according to claim 1, wherein the roller element bodies of the roller elements comprise a roller carrier. 20. Transport device according to claim 19, wherein on each roller carrier a multiple of cooling blocks are situated perpendicular to the center plane. 21. Transport device according to claim 1, wherein the drive device comprises at least one driver wheel. 22. Transport device according to claim 21, wherein the rollers of a roller element, geometrical axes of which lie on a common straight line, or mechanical axles of these rollers have extensions perpendicular to the center plane and the driver wheels have recesses on their periphery, which can engage with the extensions. 23. Transport device according to claim 1, wherein the guide paths comprise respectively two deflection arcs and a driver wheel is situated in the area of each deflection arc respectively on both sides of the center plane. 24. Transport device according to claim 1, wherein each guide path comprises, viewed in a vertical direction parallel to the local gravity vector, an upper and a bottom guide path section and at least the upper guide path section has only one or a multiple of first roller running surfaces. 25. Transport device according to claim 1, wherein each guide path comprises a deflection arc, which has in a vertical direction parallel to gravity in the upper section a first opening in the second roller running surface oriented towards a center plane and a second opening in the second roller running surface oriented away from the center plane, wherein the distance between the first opening and the second opening measured in the direction of the circulation movement of the roller elements corresponds, measured in the direction of the circulation movement, to the distance of the geometrical axes of the rollers situated at a roller element. 26. Transport device according to claim 1, wherein the transportation device has a longitudinal axis and the guide paths are telescopic in the direction of this longitudinal axis so that between adjacent roller elements a space can be created which enables the removal of a roller element from the guide paths. 27. Transport device according to claim 26, wherein the roller running surfaces of each guide path have first and second sections movable relative to each other, which overlap in the direction of the circulation movement. 28. Transport device according to claim 1, wherein the guide paths comprise respectively one deflection arc mounted in a rotatable manner, wherein the rotatably mounted deflection arcs are symmetrically disposed in respect to the center plane and are rotatable about a rotation axis orthogonal to the center plane. 29. Transport device according to claim 28, wherein the rotation axis connects the edges of the second roller running surfaces at the connection location between the rotatably mounted deflection arcs and the bottom, straight guide path sections adjacent thereto. 30. Transport device according to claim 1, wherein the roller elements are not coupled to one another in the direction of the circulation movement.
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