CARRYING DEVICE AND METHOD FOR FRONTAL REMOVAL OF A ROLL BODY FROM A ROLL FRAME, AND ROLL FRAME HAVING A ROLL BODY WHICH CAN BE REMOVED FRONTALLY

Abstract

A carrying device (1) for the frontal removal of a roll body from a roll frame, comprising a main frame (2) and a receiving section (3) for the roll body. The receiving section (3) can be transferred from an introduction position (E) into a supporting position (S). The receiving section (3) has a profile which at least partially encloses the roll body in the supporting position (S), and the carrying device (1) can be pushed in below the roll body with the receiving section (3) in the introduction position (E), and the roll body is carried with the receiving section (3) in the supporting position (S).

Claims

1-15. (canceled)

16. A carrying device for frontal removal of a roll body from a roll mill, the carrying device comprising: a main frame, and a receiving section for the roll body, which can be transferred from an introduction position into a supporting position, wherein the receiving section has a profile which at least partly encloses the roll body in the supporting position, and the carrying device can be pushed in below the roll body with the receiving section in the introduction position and the roll body is carried with the receiving section in the supporting position.

17. The carrying device according to claim 16, wherein the main frame has a substantially L-shaped form with two legs standing at an angle to each other, and the receiving section is pivot-mounted in an end region of one leg.

18. The carrying device according to claim 17, wherein one leg has guiding means.

19. The carrying device according to claim 16, wherein the receiving section can move, by actuating means, between the introduction position and the supporting position.

20. The carrying device according to claim 19, wherein the actuating means comprises a threaded rod.

21. The carrying device according to claim 20, wherein the threaded rod is mounted in a threaded bushing, and the threaded bushing is mounted in a same leg of a substantially L-shaped main frame with two legs standing at an angle to each other as the receiving section.

22. The carrying device according to claim 21, wherein the threaded rod is connected at one end to an expanding joint in a way that is rotatable, yet firm against pushing and pulling, the expanding joint is expandable by rotating of the threaded rod, and the receiving section can be transferred from the introduction position into the supporting position.

23. The carrying device according to claim 22, wherein the receiving section can be transferred from the introduction position into the supporting position by increasing a distance between the threaded bushing and the end of the threaded rod which is connected to the expanding joint.

24. The carrying device according to claim 20, wherein the threaded rod is outfitted with means for accommodating a drive unit.

25. The carrying device according to claim 16, wherein means for limiting the movement of the receiving section are provided.

26. A roll mill with a plurality of rolls, wherein at least one roll comprises a roll body with two rolling stubs, the roll body is releasable by moving apart the two rolling stubs from each other, beneath the at least one roll guiding means for a roll carrying device are arranged or can be arranged beneath the roll such that the roll body can be removed frontally and the roll carrying device is movable in a direction perpendicular to the roll axis.

27. The roll mill according to claim 26, wherein the guiding means enables a guiding of the roll carrying device perpendicular to a plumb-line.

28. The roll mill according to claim 26, wherein the guiding means comprise at least one guide rail.

29. The roll mill according to claim 26, wherein the guiding means are arranged or can be arranged in a product space.

30. A method for frontal removal of a roll body from a roll mill with a plurality of rolls, wherein at least one roll comprises a roll body with two rolling stubs and the roll body is releasable by moving apart the two rolling stubs from each other, the method comprising: introducing at least one roll carrying device with a receiving section for the roll body underneath the roll, wherein the at least one roll carrying device is resting on a frame of the roll mill; lifting of the receiving section of the at least one roll carrying device such that the roll body is in an operative connection with the roll carrying device; releasing of the roll body by moving apart the two rolling stubs, so that the roll body is resting on the at least one roll carrying device; and moving the at least one roll carrying device perpendicularly to the roll axis.

Description

[0039] In the following, the invention shall be better described with the aid of a preferred sample embodiment in conjunction with the drawing. There are shown:

[0040] FIG. 1 a preferred embodiment of the roll carrying device according to the invention in an introduction position;

[0041] FIG. 2 the roll carrying device of FIG. 1 in the supporting position;

[0042] FIG. 3 a perspective view of the roll carrying device of FIG. 2;

[0043] FIG. 4 a perspective view of a roll mill;

[0044] FIG. 5 a perspective view of the roll mill of FIG. 4 with visible rails for the roll carrying device and roll carrying devices; and

[0045] FIG. 6 a schematic, cross sectional side view of the roll mill of FIG. 5.

[0046] FIGS. 1 and 2 show a roll carrying device, respectively in an introduction position E and a supporting position S, from the side. The roll carrying device of FIG. 2 is shown in perspective in FIG. 3.

[0047] The carrying device 1 is assembled from a main frame 2 and a receiving section 3 for the roll.

[0048] The main frame 2, looking from the side, has an L-shaped profile with a long leg 21 extending substantially horizontally and a shorter leg 22 extending substantially vertically. A reinforcing strut 23 joins the two legs 21 and 22 and confers stability on the structure. Rollers 4 are arranged at both ends of the leg 21 and thus allow the displacement of the carrying device 1. The roller 4 situated in the area of the connection of the two legs 21 and 22 is supported by the axle 41. The other roller 4, situated at the end of the long leg 21, is supported by an axle 42.

[0049] The receiving section 3 has a bent profile and is mounted at the free end of the short leg 22 on a pivot axis 24 and can thus be transferred from an introduction position E, in which the free end of the receiving section 3 lies lower than the lowest point of the roll being removed, into a supporting position S in which the roll being removed is supported on both sides against rolling off.

[0050] As can be seen in FIG. 3, the main frame 2 consists of two mirror-symmetrical parts which are held at a spacing by spacing sleeves, which are respectively placed on the axles 41 and 42. Between the two parts is arranged the receiving section 3, which likewise serves as a spacer.

[0051] Means 5 are provided for actuating the carrying device 1, ensuring the secure supporting and displacement of the roll. The means 5 in this preferred sample embodiment comprise a threaded rod 6, which is pivot-mounted in a threaded bushing 7. The threaded bushing 7 is arranged in one cutout 13 of the short leg 22. The cutout 13 enables an axial transmission of forceswith respect to the threaded rod 6yet it is profiled such that the threaded rod 6 can swivel about an axis perpendicular to the threaded rod axis in order to follow a change in the height position of one end 8 of the threaded rod 6. The other end of the threaded rod 6 is provided with a T-shaped handle 14.

[0052] In order to allow the swiveling of the receiving section 3, the end 8 of the threaded rod 6 interacts with an expanding joint 9. The expanding joint 9 in this sample embodiment comprises three joint segments 91, 92 and 93, which are mounted to swivel about a common axle 10. The joint segment 91 is outfitted with a rotary joint 81, which receives the end 8 of the threaded rod 6, making possible a rotation of the threaded rod 6 and likewise making possible the axial transmission of forceswith respect to the threaded rod axis. The other joint segments 92 and 93 are in operative connection with the support frame 2 and the receiving section 3, respectively. The joint segment 92 is able to swivel about the axle 42. The joint segment 93 is likewise pivot-mounted with the receiving section 3 by the axle 31.

[0053] The joint segment 92 also plays the part of a spacer for the main frame 2.

[0054] By turning the threaded rod in the corresponding direction of rotation, the spacing between the end 8 of the threaded rod 6 and the threaded bushing 7 can be increased or decreased, after which the receiving section 3 can be raised or lowered. In the area of the axle 31 the receiving section 3 has a projecting lug 11, which together with the receiving section 3 in the supporting position experiences an end stop against a bolt 12 of the joint segment 93 and limits the movement of the receiving section 3.

[0055] FIG. 4 shows schematically a roll mill 50. A roll 51 is indicated by an arrow. The roll 51 (and a roll 51 not visible in FIG. 4) comprises a roll body 52, which is carried by two rolling stubs. The rolling stubs are configured such that they can be moved apart axially with respect to the roll 51 or 51, so that the roll body 52 is released.

[0056] Beneath the rolls 51 and 51, guide rails 53 can be arranged in a product space 55. This can be seen in FIGS. 5 and 6, while FIG. 6 also shows the second roll 51 schematically.

[0057] Beneath a respective end region of the roll body is situated a guide rail 53, which is designed to receive and guide a carrying device 1. In FIGS. 5 and 6, one carrying device 1 is arranged respectively on the guide rail 53.

[0058] The guide rail 53 and the carrying device 1 are coordinated with each other such that the carrying device 1 can only move along the guide rail in the direction perpendicular to the roll axis, apart from a tolerable sideways play. Moreover, the guide rails 53 are situated vertically to the rolls 51 and 51, so that upon releasing the roll body 52 it cannot roll out uncontrollably from the roll mill 50.

[0059] In order to remove the roll body 52 of the roll 51, a carrying device 1 is inserted into the corresponding guide rail 53 and situated underneath the roll body 52 in the product space 55. Of course, the receiving section 3 should be located in the introduction position E, or else the positioning of the carrying device 1 would not be possible. After the carrying device 1 has been arranged underneath the roll body 2, the receiving section 3 is raised into the supporting position S and then the roll body 52 is released by moving apart the rolling stubs. The roll body 52 can then be removed from the roll mill 50.

[0060] After the removal of the roll body 52 of the roll 51, the same can be done for the roll 51.