JP2964058B2 - Tundish device for horizontal continuous casting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tundish device used for horizontal continuous casting, and more particularly, to an improvement in an induction heating type tundish and a terminal connection mechanism between the induction coil and a power supply cable. It relates to the added tundish device.

[0002]

2. Description of the Related Art In horizontal continuous casting, an annular mold whose center axis is oriented horizontally is used, and a horizontal nozzle provided at the bottom of a tundish is connected to the mold to supply molten steel.
Here, the tundish is placed on a tundish cart that is moved toward and away from the equipment body such as a mold,
After the casting is completed, it is separated from the equipment main body to remove slag and the like.

Recently, an induction heating type tundish in which molten steel in a tundish is kept warm by an induction coil to maintain a casting temperature or the like has begun to be partially used. When using an induction heating type tundish, it is necessary to supply power to the induction coil at the pouring position, but the tundish is placed on the tundish cart, moves in the horizontal direction, and is stacked on the tundish cart. Unloading is also performed. On the other hand, the power supply equipment is fixed. Therefore, the terminal of the power supply cable drawn from the power supply equipment must be connected to the induction coil terminal of the tundish at the casting position, and the terminal must be disconnected.

[0004]

Generally, such terminals are connected by bolting the terminal plates together,
This is performed by connecting terminals having a male screw structure with a female screw coupler. However, the tundish induction coil has a large capacity, and if one power supply cable is used for each pole, the diameter of the power supply cable becomes large, and the handling is extremely deteriorated. Therefore, it is necessary to divide the power supply cable into two or more thin cables for each pole. Further, since the tundish is structured to be loaded and unloaded on the cart, a connection terminal is required here as well. Therefore, the number of terminals increases,
If such a large number of terminals are connected by bolts or couplers, the operation takes a great deal of time and the risk of operation errors increases.

SUMMARY OF THE INVENTION An object of the present invention is to provide a horizontal continuous casting tundish device in which a plurality of power supply cable terminals of each pole can be easily and reliably attached to and detached from an induction coil terminal of a tundish of an induction heating type and a loading / unloading type. It is in.

[0006]

SUMMARY OF THE INVENTION A tundish apparatus for horizontal continuous casting according to the present invention comprises a tundish bogie that moves toward and away from a main body equipment for horizontal continuous casting, and a main body mounted on the tundish bogie. An induction heating type tundish connected to the equipment, a fixedly installed power supply equipment for supplying a high-frequency current to an induction coil of the tundish, and a plurality of terminals of each pole of a power supply cable drawn from the power supply equipment, A terminal connection mechanism mounted on a tundish trolley that is connected to a coil terminal protruding from the tundish. The terminal connection mechanism is set with the coil terminal in accordance with mounting of the tundish on the tundish trolley. A bus bar whose one end is located below the set position, and is provided so as to straddle one end of the bus bar and a coil terminal set above the bus bar. A conductive connection head, a first cylinder for moving the connection head forward and backward with respect to one end of the bus bar so as to interconnect one end of the bus bar and the coil terminal by the connection head, and the other end of the bus bar. The pressing head is disposed at the other end of the bus bar so that a plurality of cable terminals arranged in parallel with the gap between the pressing head and the other end of the bus bar are pressed against the other end of the bus bar. And a second cylinder that moves forward and backward.

[0007]

When the tundish is mounted on the tundish cart, the coil terminal of the induction coil is set above one end of the bus bar. When the connection head is advanced by the first cylinder, both ends are pressed against the coil terminal and one end of the bus bar, and both are connected via the connection head. Also, the cable terminals of a plurality of power supply cables are arranged in parallel in the gap between the other end of the bus bar and the pressing head,
When the pressing head is advanced by the second cylinder, the plurality of cable terminals are pressed against the other end of the bus bar. Thus, the plurality of cable terminals are connected to the coil terminals via the bus bars. When the connection head and the pressing head are retracted, the coil terminal and the plurality of cable terminals are switched from the restrained state to the released state.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings.

FIG. 1 is a side view showing the entire structure of a tundish device of the present invention, FIG. 2 is a plan view of a terminal connection mechanism, and FIG.
FIG. 3 is a view taken along line AA of FIG. 2.

The tundish device has a tundish 20 loaded on a tundish carriage 10. The tundish 20 has a main body 2 mainly composed of a refractory.
1 and an induction coil 22 provided on the outer periphery thereof. A support arm 23 protrudes from the outer peripheral surface 3 of the main body 21, and a tundish nozzle 24
Is protruding.

The tundish cart 10 on which the tundish 20 is loaded moves forward and backward on a rail 13 by wheels 12 attached to a base 11. Above the base 11,
A frame 14 for supporting the tundish 20 is provided. The tundish 20 is suspended from above by the crane and placed on the tundish carriage 10, the support arm 23 is supported by the frame 14 of the tundish carriage 10, and a spherical seat provided on the lower surface of the distal end of the support arm 23. With 25, positioning in the horizontal direction on the tundish carriage 10 is performed. And Tundish cart 1
By the advance of 0, the tundish nozzle 24 is connected to the mold of the main equipment (not shown), and is separated from the mold by retreating.

The terminal connection structure 30 is housed in a box mounted on the frame 14 of the tundish carriage 10. The terminal connection mechanism 30 includes a tundish 2
Coil terminal 26 pulled out from zero induction coil 22
a, 26b, each pole 2 drawn from the power supply equipment not shown
The power supply cables 40a, 40a, 40b, 40b are connected.

The coil terminals 26a and 26b are
a, and hose holes 27a and 27b for internal water flow are attached to each. The coil terminals 26 a and 26 b are connected to the induction coil 22 by rigid leads 28 a and 28 b protruding from the outer peripheral surface of the tundish 20. Power supply cable 40
Reference numerals a and 40b denote flexible water-cooled cables. Hose ports 41a and 41b are attached to the ends of the cables, and plate-like cable terminals 42a and 42b are bolted respectively.

The terminal connection mechanism 30 has one bus bar 31a, 31b for each pole. The bus bars 31a and 31b are flat, integrated with an insulating plate 43b interposed therebetween, and fixed vertically to the center of the box. Bus bars 31a, 31
The upper end of b is slightly cut away, and when the tundish 20 is mounted on the tundish carriage 10, the coil terminals 26a, 26b are connected to the bus bars 31a,
It is set on the same plane above one end of 31b.

On both sides of the bus bars 31a, 31b, holding plates 32a, 32b are provided. Holding plates 32a, 3
First cylinders 33a and 33b, which are air cylinders, are mounted inward at one end of 2b, and connection heads 34a and 34b are mounted at the tip of each rod. The connection heads 34a, 34b are made of a conductive material and have a height that can cover from near the lower edge of one end of the bus bars 31a, 31b to near the upper edge of the coil terminals 26a, 26b set thereabove.

At the other ends of the holding plates 32a and 32b, second cylinders 35a and 35b, which are air cylinders, are mounted.
a, 36b are attached. The pressing head 36a,
36b may be either a conductor or an insulator, leaving a slight gap between the other ends of the bus bars 31a and 31b,
It is opposed to the other end.

The other end of the bus bar 31a and the pressing head 36
a in the gap between the cable terminals 42a, 4
2a are inserted in the upper and lower stages. At this time, the bent portions at the ends of the cable terminals 42a, 42a
The bus bar 31a descends along the surface of the other end by being guided to the bus bar 31a. Similarly, bus bar 31b
The cable terminals 42b, 42b are inserted into the upper and lower two stages from above from between the other end of the cable head and the pressing head 36b. The cable terminals 42b, 42b also descend along the surface of the other end of the bus bar 31b, with the bent portions at the tips being guided by the vertical guides 37b, 37b. Bus bars 31a, 31b
Hose openings 38a, 38 for internal water flow
b is attached.

In the above-described tundish device, when the tundish 20 is mounted on the tundish cart 10, the coil terminals 26a and 26b are connected to the terminal connection mechanism 3.
It is automatically set above one end of the busbars 31a, 31b of zero. In this state, the first cylinders 33a, 33b are moved in order to simultaneously advance the connection heads 34a, 34b.
, The upper ends of the connection heads 34a and 34b are pressed against the coil terminals 26a and 26b, and the lower ends are pressed against the one ends of the bus bars 31a and 31b. Thus, the coil terminals 26a, 26b are connected to the bus bars 31a, 3
1b is connected to one end of the head 1b via the connection heads 34a and 34b with one touch.

Power supply cables 40a, 40a, 40b, 4
0b, the cable terminals 42a, 42b are connected from above to between the other end of the bus bar 31a and the pressing head 36a.
42a is inserted in two steps. Further, between the other end of the bus bar 31b and the pressing head 36a, the cable terminals 42b, 42b are inserted in two stages from above. Then, the second cylinders 35a and 35b are driven synchronously so as to advance the pressing heads 36a and 36b at the same time. As a result, the cable terminals 42a and 42b are pressed against the other end of the bus bar 31a. Thus, the power supply cables 40a, 40a are connected to the coil terminals 2 via the bus bar 31a and the connection head 34a.
6a, and the power supply cables 40b, 40b are connected to the coil terminals 26b via the bus bar 31b and the connection head 34b.
Connected to.

When the connection heads 34a and 34b are retracted, the coil terminals 26a and 26b are released from the restraint by the connection heads 34a and 34b, and the tundish 20 can be removed from the tundish carriage 10. Similarly, with the retreat of the pressing heads 36a and 36b,
The power supply cables 40a, 40a, 40b, and 40b become detachable.

In order to improve the handleability of the power supply cables 40a and 40b, even when the number thereof is further increased,
They can be made very simply as before the coil terminals 26.
a, 26b, and the connection is reliably made by pressing the cylinder.

[0022]

As is apparent from the above description, the tundish apparatus for horizontal continuous casting of the present invention simply mounts the tundish on the tundish carriage and sets the coil terminal of the induction coil at the connection position. Therefore, it is not necessary to align the coil terminals. Then, by operating the first cylinder, the coil terminal is automatically connected to one end of the bus bar. Further, by operating the second cylinder, the plurality of cable terminals are simultaneously connected to the other end of the bus bar and connected to the coil terminals. Therefore, even though there are many terminals, connection and disconnection can be performed easily and reliably.

[Brief description of the drawings]

FIG. 1 is a side view showing the entire structure of a tundish device of the present invention.

FIG. 2 is a plan view of a terminal connection mechanism.

FIG. 3 is a view taken in the direction of arrows AA in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Tundish bogie 20 Tundish 22 Induction coil 26a, 26b Coil terminal 30 Terminal connection mechanism 31a, 31b Bus bar 33a, 33b First cylinder 34a, 34b Connection head 35a, 35b Second cylinder 36a, 36b Press head 40a, 40b Feeding cable 42a, 42b Cable terminal 43a, 43b Insulating plate

Continuing from the front page (72) Inventor Yuji Ito 9-9 Tennohara, Matsukawa-cho, Fukushima-shi, Fukushima Kita-Shiba Electric Co., Ltd. (72) Inventor Shinichi Miyajima 1-1-1, Shibaura, Minato-ku, Tokyo Headquarters Toshiba Corporation In the office (56) References JP-A-4-67583 (JP, A) JP-A-60-244452 (JP, A) JP-A-3-120946 (JP, U) JP-A-3-91158 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB name) B22D 11/04 114 B22D 11/10 310 B22D 41/01

Claims (1)

(57) [Claims] 1. A tundish truck that moves toward and away from a main unit of horizontal continuous casting, an induction heating type tundish mounted on the tundish truck and connected to the main unit, and the tundish. A fixedly installed power supply facility for supplying a high-frequency current to the induction coil, and a tundish bogie for connecting a plurality of terminals of each pole of a power supply cable drawn from the power supply facility to a coil terminal protruding from the tundish. A terminal connection mechanism, wherein the terminal connection mechanism includes a bus bar, one end of which is located below a set position where a coil terminal is set in accordance with mounting of the tundish on the tundish carriage; A conductive connection head provided so as to straddle one end and a coil terminal set above the one end, and a bus bar one end formed by the connection head. A first cylinder for moving the connection head forward and backward with respect to one end of the bus bar so as to interconnect the coil bar and the coil terminal; a pressing head opposed to the other end of the bus bar with a gap; And a second cylinder for moving the pressing head forward and backward with respect to the other end of the bus bar so that a plurality of cable terminals arranged in parallel with the gap between the bus bar and the other end of the bus bar are pressed against the other end of the bus bar. Tundish device for horizontal continuous casting.