JPH0710836Y2 - Roll layout changing device for continuous casting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a roll layout changing device in a continuous casting facility.

[Conventional technology and its problems]

Generally, guide rolls and pinch rolls in continuous casting equipment must be replaced when the size or shape of the slab changes, and these rolls are always in contact with hot slabs, cooling water or steam, Since it is placed in a bad environment such as a scale, uneven wear, breakage, bearing failure, etc. are likely to occur, and rolls are frequently replaced.

Therefore, the roll mounting structure such as the guide roll and the pinch roll is as follows in consideration of workability of roll replacement. That is, as shown in FIG. 6, a pair of rolls 1 and 1 are attached to the upper and lower segment frames 2 and 3, and a plurality of these segments are connected in series and attached to a support frame (not shown). , The support frame is further divided (for example, Japanese Utility Model Publication No. 60-16452,
(See, for example, official publication No. Sho 63-40293).

By the way, in such a conventional continuous casting facility, although rolls can be easily replaced, if the casting speed is improved and the productivity is improved due to the progress of casting technology, the roll pitch and roll diameter of the existing facility will increase. It was not possible to change the so-called roll layout, such as the bending point and the unbending point. This is because the conventional segment is roughly composed of an upper segment frame 2, a lower segment frame 3 and a connecting portion (not shown) of the upper and lower segment frames 2 and 3 as shown in FIG. The bearing unit including the roll 1 and the roll bearing 4 is positioned on the roll-side mounting surface 5 of each of the segment frames 2 and 3 by the key 6 and mounted by the bolt 7. Therefore, the pitch L ₁ , L ₂ ... L ₈ of each roll 1 cannot be changed.

Therefore, for example, if it is necessary to change the roll pitch L, it is necessary to remanufacture the entire segment, and in some cases it is necessary to remodel from the foundation work, which causes a large remodeling cost.

[Means for Solving the Problems]

Therefore, the present invention has been devised to solve such a problem, and its gist is to provide an intermediate base having a roll bearing mounting surface formed on the slab conveyance path side with a roll of a segment frame. A plurality of types of intermediate bases are provided that are detachably attached to the side mounting surface and that form the mounting surface of the bearing for rolls with different roll layouts such as roll diameter and roll pitch. The roll layout changing device of the continuous casting facility is characterized by being replaced.

〔Example〕

The structure of the present invention, together with its operation, will be described in detail with reference to an embodiment applied to a steel continuous casting facility shown in the accompanying drawings.

FIG. 1 is an overall sectional view of an embodiment of the present invention, FIG. 2 is a sectional view of a main portion of a segment used for a horizontal portion, FIG. 3 is a sectional view of another embodiment of FIG. 2, and FIG. FIG. 5 is a cross-sectional view of a main part of a segment used for the part, and FIG. 5 is a cross-sectional view of another aspect of FIG. 4, but the same reference numerals are given to the portions common to the conventional example shown in FIG.

In the continuous casting equipment of this embodiment, the slab conveying path is a vertical portion,
A curved portion and a horizontal portion, that is, a straightening device and a roller apron, which are used in the curved portion, for example, will be described.

In FIG. 1, the upper and lower segment frames 2 and 3 have roll-side mounting surfaces 5 and 5 formed in a flat shape, respectively, and the roll-side mounting surfaces 5 and 5 have the following intermediate bases, respectively.
8 and 8 are detachably attached with bolts 9.

As the intermediate base 8, various types are manufactured in advance as will be described later and can be replaced if necessary. Since the upper and lower segment frames 2 and 3 are composed of the same constituent elements, the upper segment frame 2 will be described below.

That is, the intermediate base 8 is formed of a plate-like body, one surface of which is formed so as to be in close contact with the roll-side mounting surface 5 via the key 10, and the other surface of which is provided with a predetermined cast piece. Bearing mounting step portions 11, 11 ... Are formed so as to form a transport path. Bearings 4 supporting the roll 1 are joined to these step portions 11, 11, ... And attached by a positioning key 6 and a tightening bolt 7.
Therefore, when the roll layout is changed, the upper segment frame 2 is left as it is and the intermediate base 8 is replaced with another intermediate base. In addition, 12
Indicates a slab.

Next, the operation of the segment of the present embodiment will be described. Among the segments used in the horizontal portion, a segment having a large roll pitch L and a roll diameter d (see FIG. 1) as shown in FIG. In order to change to a segment having a small roll pitch and roll diameter as shown in FIG. 3, the upper segment frame 2 is left as it is and an intermediate base 8a having a key 6 having a predetermined roll pitch is selected.
The bearing 4 supporting the predetermined roll 1 on the intermediate base 8a
You can change the roll layout by installing.

In addition, in order to prevent cracking of the cast slab 12 in the segment used for the curved portion, the distortion should be minimized from 1 point unbending as shown in FIG. 4 to 3 point unbending as shown in FIG. In order to change so, the lower segment frame 3 is left as it is and an intermediate base 8a having a predetermined step 11 is selected. If the bearing 4 supporting the predetermined roll 1 is attached to the intermediate base 8a, the roll layout can be changed, which is extremely convenient.

[Effect of device]

According to the present invention, an intermediate base is interposed between the segment frame and the roll bearing, and the intermediate base is detachably provided on the roll-side mounting surface of the segment frame,
If you want to change the roll layout, you can select the corresponding intermediate base from the prepared intermediate bases and attach it to the segment frame, so you can use the segment frame as it is and replace the segment as before. The replacement cost can be reduced to 1/10 or less compared to the case.

[Brief description of drawings]

FIG. 1 is an overall sectional view of an embodiment of the present invention, FIG. 2 is a sectional view of a main portion of a segment used for a horizontal portion, FIG. 3 is a sectional view of another embodiment of FIG. 2, and FIG. FIG. 5 is a cross-sectional view of a main part of a segment used for a portion, FIG. 5 is a cross-sectional view of another aspect of FIG. 4, and FIG. 6 is a cross-sectional view of a conventional example. 1 ... Roll, 2,3 ... Upper and lower segment frame, 4 ...
Roll bearing, 5 ... Roll side mounting surface, 8 ... Intermediate base,
L ... Roll pitch, d ... Roll diameter.

Claims (1)

[Scope of utility model registration request] 1. A roll having different roll layouts such as roll diameter and roll pitch, wherein an intermediate base having a roll bearing mounting surface formed on the slab conveyance path side is detachably provided on the roll side mounting surface of a segment frame. A roll layout changing device for a continuous casting facility, characterized in that a plurality of types of the intermediate bases forming a mounting surface of a bearing are prepared, and each time the roll layout is changed, the intermediate bases are replaced.