JP2634177B2 - Belt holding device of belt type continuous casting machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for pressing a belt of a belt-type continuous caster for producing a thin slab against a side dam.

[Conventional technology]

 FIGS. 5 and 6 show a conventional belt-type continuous caster.

FIG. 5 is a schematic side view showing the arrangement of main members in a conventional belt type continuous casting machine, and FIGS. 6 (A) and (B) are diagrams of FIG.
It is a VI-VI sectional view.

As shown in these drawings, a pair of endless belts 41, 41 having a portion that is wound around a pulley 42, moves, is disposed in parallel with a space therebetween, and moves from above to below, the clamping at a gap dimension W ₁ between the moving parts above the parallel disposed top to bottom, formed by a pair of side dams 43, 43 to move in unison with the pair of belts 41, 41 Molten steel R is continuously supplied from the immersion nozzle 44 to the molded part, and both belts 41 are pressed against the side dams 43 by means of a total of four sets of back holding blocks 51 fixedly attached to the side dams 43 so that they are brought into close contact with each other. Intrusion or leakage of the molten steel R into the joint is prevented.

Then, the molten steel R is cooled and solidified through the two belts 41 by the lower cooling pad block 31, and the slab S having the thickness t is continuously drawn downward. As shown in FIGS. 6 (A) and 6 (B), the back holding block 51 is fixed to the side plate 17 fixed to both side ends of the frame 11, and a plurality of shoes 52 whose pressing positions can be adjusted are vertically moved. They are arranged on the left and right and are decorated. One of the two belts 41 is held in parallel by a guide roller 23 which is mounted on one side to both side plates 17 and the other to a bearing block 25 fixed to the frame 11 via a shaft 24. I have.

In addition, cooling water is injected between each of the showers 52 and the guide rollers by an upper cooling water nozzle (not shown), and belts are formed.
Cooling 41.

In order to change the width of the slab S during continuous casting, the blocks of both side dams 43 are moved in the slab width direction further above the upper surface of the molten steel R, and, for example, as shown in FIG. Is reduced from W1 to W2, the width becomes W2
Can be obtained.

[Problems to be solved by the invention]

Since the back holding block 51 of the conventional apparatus is fixed to the side plate 17, the sixth block is used to change the width of the slab S.
As shown in FIGS. (A) and (B), both side dams 43
When the distance is reduced from W1 to W2 in the slab width direction, the number of the shears 52 pressing the belt 41 against the side dam 43 decreases, so the pressing area decreases, and the guide roller 23 has almost no pressing force. Therefore, the sealing performance is reduced.

Further, since the pressing force adjusting means of the shoe 52 is not provided, a difference in the pressing force is generated between the shoes 52.

Therefore, between the belt 41 and the side dam 43, the molten steel R
In the worst case, or in the worst case, a location where the molten steel R leaks.

[Means for solving the problem]

In order to solve the above-mentioned problems, a belt presser of a belt-type continuous caster according to the present invention includes a pair of belts that are arranged in parallel at a distance from each other and move from above to below, and a pair of belts. The pair of belts, which are arranged in parallel at a distance from each other and are sandwiched between portions moving from above to below, move in synchronism with the pair of belts, and move in the slab width direction to change the space. In a belt-type continuous caster that supplies molten metal to a mold portion formed by a side dam and continuously draws a slab solidified in a plate shape, a pressing force for pressing the pair of belts against the pair of side dams, respectively. And a plurality of pressing members each configured to adjust a pressing position, wherein the pressing members are configured to continuously move following the movement of the pair of side dams in the slab width direction. When That.

[Action]

The belt holding device is mounted on a belt-type continuous casting machine by adjusting the pressing position and pressing force of each pressing member on a plane such as a surface plate in advance, and further finely adjusting the pressing force of each pressing member. Is pressed against the side dam with a predetermined pressing force so as to adhere to the side dam, thereby preventing intrusion or leakage of the molten metal.

When both side dams are relatively moved in the slab width direction to change the width of the slab, the belt holding device also follows the movement of the side dam while holding the holding position and the pressing force of the holding member. And the width of the slab can be changed while maintaining the sealing property between the belt and the side dam.

According to the present invention, the infiltration or leakage of the molten metal is prevented by improving the adhesiveness of the side dam of the belt in this way, and the cast slab without impairing the adhesiveness between the belt and the side dam during casting. The width can be changed.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 4. The same members as those of the conventional device are denoted by the same reference numerals, and redundant description will be omitted.

In FIGS. 1 to 4, reference numeral 1 denotes a back holding block, and as shown in detail in FIG. 3, a large number of through holes 1 'having screw portions at both ends are formed, and the front surface (belt side) is provided. ), A cap 3 containing a rotatable ball 2 is screwed through a plurality of shims 3a, and a ball is provided between the cap 3 and a pressing force setting screw 5 screwed into a through hole 1 'on the back surface. The presser 4 and the spring 6 are interposed.

Also, on the back, two rollers 7, 8 at the top and bottom
The rollers 7, 8 are loosely fitted to respective guides 9, 10 fixed to the frame 11 and the side plate 17,
The slab can be moved in the width direction. Reference numeral 12 denotes a screw shaft which is axially mounted on a bearing block 18 attached to the side plate 17 and the frame 11 and extends substantially in the horizontal direction. The screw shaft 12 is screwed with a screw hole 1a passing through the backing block, and is connected to an end thereof. The worm wheel 13 in the gear case 15 attached to the side plate 17 is fixed.

Reference numeral 14 denotes a drive shaft of a worm wheel 13. A worm (not shown) that meshes with the worm wheel 13 is fixed to the tip of the drive shaft.
Connected to 16.

Reference numeral 19 denotes a jet running water nozzle provided directly above the back holding block 1, which is mounted on a bed 20, and
Numeral 20 is fixed to the backing block 1 and connected to a water supply device (not shown) by a cooling water supply pipe 21 and a flexible hose (not shown) to inject water to the surface (back surface) of the belt 41 on the side opposite to the cast slab. It is like that. Reference numeral 22 denotes a drain pipe that opens into the opening 11a of the frame 11, which is fixed to a drain hole formed in the frame 11, and connected to a water supply device (not shown).

Reference numeral 23 denotes a guide roller which is in contact with the back surface of the belt 41, rotates following the belt 41, and supports both belts 41.
A plurality of cooling water pipes (not shown) are provided at predetermined intervals on a shaft 24 mounted on a bearing block 25 mounted on the frame 11 at predetermined intervals. Inject cooling water from The cooling pad block 31 is composed of a pad 35, a roller 34 which is attached to the pad 35, is in contact with the back surface of the belt 41, and rotates by following the belt 41, and a water supply pipe 32 and a drain pipe 33 for circulating cooling water inside. It is fixed to the frame 11 and the side plate 17 below the back holding block 1.

This embodiment is configured as described above. The molten steel R is supplied from the immersion nozzle 44 to the mold portion formed by the belt 41 and the side dam 43 and solidified, and the slab S is continuously formed from below the belt 41. When pulling out, the pressing position (point of contact with the belt) of each ball 2 of the back press block 1 on a flat surface such as a platen is adjusted in a plane by adjusting the number of shims 3a. I do. And the pressing force setting screen 5
Is rotated, a predetermined pressing force is set on the ball 2 by the spring 6, and the ball 2 is mounted on the belt type continuous casting machine.

After the wearing, the pressing force of each ball is finely adjusted by the pressing force setting screw 5, and both belts 41 are attached to the side dam 43.
With a predetermined pressing force to seal the gap.
To prevent intrusion or leakage.

As shown in FIG. 4 (B), in order to reduce the width of the slab S, when both side dams 43 are moved as indicated by arrows to reduce the interval from W1 to W2, a control device (not shown) Then, each servo motor 16 rotates in synchronization with the movement of the side dam 43, and each screw shaft which is screwed into the screw hole 1 a of the back holding block 1 via a worm (not shown) and a worm wheel 13. 12 is rotated to move the back press block 1 in synchronization with the movement of the side dam 43.

Therefore, even if the side dam 43 is moved, the width of the slab can be changed until the pressing state of the belt 41 against the side dam 43 by the back holding block 1 does not change. Also, when the width of the slab S is increased, the slab width can be changed in a similar manner.

As described above, in this embodiment, both belts 41 are
By pressing the belt 43 with a predetermined pressing force and a uniform pressing force in the width direction of the belt 41, it is possible to seal and prevent molten metal from entering or leaking.

Also, when changing the slab width during casting,
The back press block 1 moves in synchronism with the movement of the side dam 43, and the slab width can be changed while maintaining the state of pressing the belt 41 against the side dam 43 so as to maintain the sealing performance.

〔The invention's effect〕

According to the present invention, since the pressing force and the pressing position of the pressing member of the belt pressing device can be adjusted, the belt is reliably pressed against the side dam, so that the sealing property is improved, and the belt and the side dam are fused to the pressing surface. Intrusion or leakage of metal can be completely prevented.

Furthermore, even if the side dam is moved in the slab width direction to change the width of the slab, the belt presser follows the side dam and continuously moves while maintaining the above-described pressing state. Also at the position, intrusion or leakage of the molten metal between the belt and the pressing surface of the side dam can be prevented.

[Brief description of the drawings]

1 is a schematic side view showing an arrangement of main members of a belt type continuous casting machine according to one embodiment of the present invention, FIG. 2 is an enlarged cutaway side view of a part II in FIG. 1, and FIG. 4 (A) and 4 (B) are sectional views taken along the line IV-IV of FIG. 2 and show the side dam and the belt holding device when changing the width of the slab. FIG. 5 is a side view showing the concept of a belt-type continuous caster as an example of a conventional apparatus, and FIGS. 6A and 6B are sectional views taken along the line VI-VI of FIG. FIG. 9 is an explanatory view showing a state of the belt pressing device with respect to the movement of the side dam when changing the width of the slab. 1 ... back press block, 2 ... ball, 3 ... cap, 3a
… Shim, 4… Ball presser, 5… Pressure setting screw
6 ... Spring, 7,8 ... Guide roller, 9,10 ... Guide, 1
2 ... screw shaft, 19 ... jet running water nozzle, 20 ... head, 21 ... cooling water supply pipe, 41 ... belt, 42 ... pulley, 43 ... side dam, 44 ... submerged nozzle.

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hiroharu Shozen 4-6-22 Kannon Shinmachi, Nishi-ku, Hiroshima-shi, Hiroshima Mitsubishi Heavy Industries, Ltd. Hiroshima Works (56) References JP-A-61-99541 (JP, A )

Claims (1)

(57) [Claims] 1. A pair of belts arranged in parallel and spaced apart from each other and moving from above to below, and a pair of belts of the same pair arranged in parallel and spaced apart from each other and moved from above to below Molten metal is supplied to a mold portion formed by a pair of side dams that are sandwiched between and move in synchronization with the pair of belts and move in the slab width direction to change the distance therebetween, and solidify in a plate shape. In a belt-type continuous caster that continuously pulls out the cast slab, having a plurality of pressing members configured to be able to adjust a pressing force and a pressing position respectively for pressing the pair of belts to the pair of side dams,
A belt holding device for a belt-type continuous casting machine, wherein the holding member continuously moves following the movement of the pair of side dams in the slab width direction.