JPH0133260Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a centering device for a long nozzle for continuous casting equipment, and particularly relates to a simple and inexpensive centering device, and is applicable to the field of continuous casting equipment using a long nozzle. used in

[Conventional technology]

In a continuous casting apparatus, generally, as shown in FIG. 5, the material is once poured from a ladle 2 into a tundish 4 (intermediate ladle), and then poured into a mold. A long nozzle 6 is used to prevent air oxidation when pouring from the ladle 2 into the tundish 4. The long nozzle 6 is held in the tundish 4 via a holding arm, is attached by pressure to a ladle lower nozzle 8 attached to the bottom of the ladle 2, and is used with its tip immersed in the tundish 4.

Attaching the long nozzle 6 to the ladle lower nozzle 8 is a dangerous operation that requires precision since it involves handling highly molten material. That is, since the ladle 2 is set by a crane and the long nozzle 6 side is held on a tundish truck, it is difficult to match the relative positions with this operation due to the stopping accuracy and other issues.

Automatic attachment/detachment devices using sensors have the drawback of being complex and expensive. Therefore, there is a current need for a simple and inexpensive centering device for a long nozzle.

[Problem that the invention attempts to solve]

The purpose of the present invention is to, in view of the current state of the prior art,
To provide a simple and inexpensive long nozzle centering device that does not require dangerous long nozzle centering work.

[Means for solving problems]

The gist of the present invention is as follows.
That is, in a centering device between a ladle lower nozzle attached to the ladle bottom in a continuous casting apparatus and a long nozzle held on a tundish truck via a holding arm, a concave guide provided at the ladle bottom is used. and a convex jig that is provided on the holding arm and that fits into the concave guide and is movable up and down.
This is a centering device for a long nozzle for continuous casting equipment, characterized by comprising:

The details of the present invention will be explained with reference to the embodiments shown in FIGS. 1 and 2. FIG. There is a concave guide 1 at the bottom of the ladle 2.
0 is set. On the other hand, a holding arm 14 for holding the long nozzle 6 is provided on the tundish truck 12 as in the conventional device. A convex jig 16 that fits into the concave guide 10 is installed on the holding arm 14 so as to be movable up and down.

Here, a line connecting the long nozzle 6 and the convex jig 16 is parallel to the traveling direction of the tundish truck 12. On the other hand, the distance between the ladle lower nozzle 8 and the concave guide 10 is the same as the distance between the long nozzle 6 and the convex jig 16, and the line connecting the two is parallel to the direction in which the tundish truck 12 moves.

The long nozzle 6 held by the holding arm 14 is attached to the mounting jig 1 as shown in FIGS. 3A and 3B.
8 has a certain amount of movement allowance, allowing for fine adjustments left and right.

[Effect]

Next, the centering device of the present invention having the above-mentioned configuration will be explained according to the operating procedure.

(a) First, the ladle 2 is set in a predetermined position together with the tundish truck 12 by a crane.

(b) The convex guide 16 is raised and inserted into the concave guide 10 and fitted to perform primary centering of the ladle lower nozzle 8 and the long nozzle 6.

(c) Next, the ladle 2 is lowered, and the lower part of the ladle lower nozzle 8 and the upper taper of the long nozzle 6 are engaged to perform secondary centering as shown in FIG.
Note that, as shown in FIG. 3, the long nozzle 6 has a certain amount of movement allowance, so fine adjustment by secondary centering is possible.

In the present invention, the long nozzle 6 can be centered using a simple device as described above.

[Effect of idea]

This invention makes it possible to center the ladle and long nozzle by providing a concave guide on the bottom of the ladle and a convex jig on the holding arm of the long nozzle, and using a simple and inexpensive device that fits the two together. , the dangerous centering work under the ladle was eliminated, resulting in labor savings.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing a centering device according to an embodiment of the present invention, Fig. 2 is a partially enlarged sectional view of Fig. 1, and Figs. 3 A and B show how the long nozzle is held in an embodiment of the present invention. , A is a plan view, B is a side view, FIG. 4 is a sectional view illustrating the secondary centering of the embodiment of the present invention, and FIG. 5 is a sectional view showing the relationship among the ladle, tundish and long nozzle. 2...Ladle, 4...Tandish, 6...Long nozzle, 8...Ladle lower nozzle, 10...Concave guide, 14...Holding arm, 16...Convex jig.

Claims (1)

[Scope of utility model registration request] In a centering device between a ladle lower nozzle attached to a ladle bottom and a long nozzle held on a tundish truck via a holding arm in a continuous casting device, a concave guide provided at the ladle bottom; A centering device for a long nozzle for a continuous casting machine, comprising: a convex jig that is provided on the holding arm and fits into the concave guide and is movable up and down.