JPH05246U - Support roll for continuous casting machine - Google Patents

Abstract

(57) [Summary] [Purpose] Prevents damage to the bearing of the support roll on the short side of the cast piece cast by a continuous casting machine, and does not cause flaws on the short side of the cast piece. [Structure] A support roll for a continuous casting machine that supports a short side of a slab cast by the continuous casting machine, in which a crown is provided on a body portion of the support roll and the roll is provided with an automatic centering function. Support roll.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a support roll for a continuous casting machine that supports a short side of a slab cast by the continuous casting machine.

[0002]

[Prior Art]

 Immediately after being cast by the continuous casting machine, as shown in FIG. 2, both the long side 21a and the short side 21b of the cast piece 21 are supported by the support rolls 22 and 23, respectively. Of these support rolls, the support roll 23 that supports the short side is arranged in a narrow space, so that the support roll 23 is fitted around the bearing 26 that is fitted to the rotation support shaft 25 supported by the support member 24. Has a structure that rotates. The support roll 23 has a cylindrical shape, and the body has a cylindrical surface without a crown. Reference numeral 27 in FIG. 2 is a support portion of the support roll 22 on the long side.

[0003]

[Problems to be solved by the device]

 However, when the slab is to be supported by the support roll that supports the short side of the conventional slab described above, as shown in FIG. 2, the shape of the short side 21a is increased as the solidification of the slab 21 progresses. Since the concave portion has a concave portion at the center, the cast piece 21 is supported only by the body shoulder portion 23a of the support roll 23, and an eccentric load acts on the support roll 23 to damage the bearing 26. There was a problem. Further, as a result, there is a problem that a flaw is generated on the short side of the slab.

The present invention aims to solve the above-mentioned problems of the prior art, and to provide a support roll for a continuous casting machine, in which the bearing is not damaged and the slab is not flawed.

[0005]

[Means for Solving the Problems]

 The support roll for a continuous casting machine according to the present invention is a support roll for a continuous casting machine that supports a short side of a slab cast by the continuous casting machine. It has a centering function.

[0006]

[Action]

 The support roll for a continuous casting machine according to the present invention is a support roll for a continuous casting machine that supports a short side of a slab cast by the continuous casting machine. Since the centering function is added, the center of the roll always comes into contact along the concave side of the slab, and the load acts toward the center of the roll. Therefore, no unbalanced load acts on the bearing and the bearing is not damaged.

[0007]

【Example】

 A support roll for a continuous casting machine according to an embodiment of the present invention will be described with reference to FIG. A support roll 1 for a continuous casting machine according to an embodiment of the present invention has a roll body 2 provided with a crown. Further, the structure is such that it rotates around the bearing 3 fitted on the rotation support shaft 25 supported by the support member 24. The bearing 3 has a centering function. When the support roll 1 supports the short side 21b of the cast slab 21, when the centering function of the bearing 3 is about to work, the body 2 is crowned, so that the centering is smoothly performed. For this reason, the bearing 3 is always loaded in the vertical direction and no unbalanced load is applied, so that the bearing 3 is not damaged.

When the support roll having the crown as described above is used, the bearing, which was conventionally damaged by casting about 1400 charges, can be used for 5500 charges, the life is extended to a little less than 4 times, and the annual repair cost is increased. Could be significantly reduced.

[0009]

EFFECTS OF THE INVENTION According to the present invention, the bearing of the support roll supporting the short side of the slab is not damaged, and the short side of the slab is not flawed.

[Brief description of drawings]

FIG. 1 is an explanatory view of a support roll for a continuous casting machine according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a conventional support roll for a continuous casting machine.

[Explanation of symbols]

 1 Support roll 2 Body of support roll 3 Bearing

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasushi Ueyama 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Steel Pipe Co., Ltd.

Claims (1)

[Claims for utility model registration] [Claim 1] A support roll for a continuous casting machine, which supports a short side of a slab cast by a continuous casting machine, wherein a roll is provided by providing a crown on a trunk portion of the support roll. A support roll for a continuous casting machine, which has an automatic centering function.