JPS6083758A - Supporting device for continuous casting billet - Google Patents

Abstract

PURPOSE:To provide a titled device which suppresses bulging between rolls with a simple construction by the constitution in which the segments supporting and holding supporting rolls facing each other on the front and rear of a continuous casting billet are moved forward and backward in synchronization with each other along the drawing direction of the billet. CONSTITUTION:A continuous casting billet 2 drawn from a mold is supported and guided from the front and rear surfaces by means of single or plural supporting rolls 1 which are disposed to face each other with said billet 2 in-between. Wheels 3 guided by guide rails 8 are attached to both ends of the rolls 1 and are supported and held integrally by connecting members 4. Said members 4 are further moved back and forth by pinions 6 which are meshed therewith via racks 5 inscribed on the top or bottom surfaces of said members and are driven forward and backward by driving sources 7 to move forward and backward the above-mentioned rolls 1 by each required distance in synchronization with each other along the drawing direction of the billet 2 at a required pitch.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an apparatus for supporting a slab produced by continuous casting, equipment, and equipment during its production.

C) Prior art and its problems) Center segregation of slabs produced by continuous casting equipment (hereinafter referred to as "continuously cast slabs") is caused by large inter-roll bulging occurring between slab supporting rolls. It is well known that The mainstream method for reducing bulging between rolls is to use split rolls to reduce the diameter of the rolls, thereby reducing the roll pitch without increasing roll deflection. However, even with this method, the minimum roll pitch is limited due to limitations on the number of roll divisions, bearing strength, etc. (current roll pitch = 250 to 300 m), and ■ the bearing installed in the roll division is There are drawbacks such as frequent bearing problems due to the high temperature and roughness.

(Object of the Invention) The present invention has been made in view of the above problems, and is a slab support roll with a simple structure similar to the conventional one, with a large diameter and a large pitch.
It is an object of the present invention to provide a support device for continuously cast slabs that has the same effect of suppressing inter-roll bulging as the above-mentioned small-sized split rolls.

(Structure of the Invention) The present invention is a support device that supports and guides the front and back surfaces of a continuously cast slab that has exited a mold, and includes a single support roll or a plurality of supporting rolls that are vertically opposed to each other on the front and back surfaces of the continuously cast slab. The gist is that each segment is integrally supported and held in a rotatable manner, and a moving mechanism capable of moving the segment forward and backward in synchronization by a required distance along the drawing direction of the continuously cast slab. 11° (Embodiment) The present invention will be described below based on an embodiment shown in the drawings.

In the drawing, (1) shows the continuously cast slab (2) pulled out from the mold by pinch rolls located downstream.
These rolls are supported and guided on their front and back surfaces, and the rolls (1) are arranged opposite to each other with the continuous cast slab (2) sandwiched between them. Wheels (3) are attached to both ends of the roll (1) so as to be rotatable relative to the roll (1),
Further, two rolls (1), for example, are integrally supported and held at both ends using connecting members (4) so as to be rotatable.

(5) is a rack carved on the upper or lower surface of the connecting member (4), and the rack (5) is connected to a drive source such as a motor that can rotate in forward and reverse directions, and the pinion (6) that is engaged with the rack (5) is Guide rails (8) connected to (7) and installed on both sides of the continuous slab (2) along the drawing direction
2 of each of the front and back sides that were held together with the above-mentioned weight while being guided by K
The book rolls (1) are configured to move forward and backward at a required pitch in synchronization by a required distance.

(9) Prevent the roll (1) held by the connecting member (4) on the front side from moving out from the guide rail (8) before pulling out the continuously cast slab (2). This is a stopper protruding from the top surface of the connecting member (4) on the back side.

Although not shown in this embodiment, the rolls (1) on the front side and/or the back side, which are held in one piece by the connecting member (4), are guided in accordance with the thickness of the slab to be manufactured. Needless to say, it is configured so that it can move together with the rail (8), and furthermore, in this embodiment, the roll (1
) is moved synchronously by the rack (5) and the binion (6) using the driving sources (7) on each side. Of course, it is also possible to integrally configure the screw so that it can be fixed at a predetermined position, and to move the screw forward and backward in the drawing direction of the continuously cast slab (2) using another known mechanism.

Furthermore, the distance and speed of forward and backward movement of the roll (1) in the VC of the present invention are not limited in any way;
Depending on the coagulation state in 2), it may be determined as appropriate, such as a short moving distance and high speed on the upstream side, and a large moving distance and low speed on the downstream side.

(Effects of the Invention) As described above, according to the present invention, as shown in the table below,
Even when conventional large-diameter rolls were used, it was possible to obtain the same effect of reducing inter-roll bulging as the small-diameter split roll system, and there was no bearing trouble like the small-diameter split roll system.

table

[Brief explanation of the drawing]

The drawing is a perspective view schematically showing an embodiment of a support device for continuously cast slabs according to the present invention. (1) is a roll, [2] is a continuously cast slab, (3) is a wheel, (
4) is a connecting member, (s) is a rack, (6) is a binion,
(7) is a driving source, and (8) is a guide rail.

Claims (1)

[Claims] (1) A support device that supports and guides the front and back surfaces of the continuously cast slab that has come out of the mold, in which a single support roll or a plurality of support rolls that face each other vertically on the front and back surfaces of the continuously cast slab are rotatably integrated. A continuously cast slab characterized by comprising each segment that supports and holds the continuous cast slab, and a moving mechanism capable of moving the segments forward and backward synchronously by a required distance along the drawing direction of the continuous cast slab. Support device.