JP2534296Y2 - Converter tapping sleeve exchange machine - Google Patents

Description

[Detailed description of the invention]

[0001]

Industrial Applicability The present invention is intended to replace the converter in a short period of time without requiring any manpower when the outlet of the converter becomes gradually narrower and the amount of molten metal flowing out decreases. The present invention relates to a converter for a tapping sleeve at a converter so as not to hinder the operation of the converter.

[0002]

2. Description of the Related Art Converters are widely used for producing steel, refining non-ferrous metals such as copper, etc., and as shown in FIG. The product melt flows out of the product outlet 3 below the charge port 1 by rotating the converter 2 about the rotating shaft 2a.

[0003] The outlet is easily attached to the tap 3 in a relatively short period of time because the outlet tends to become narrow due to solidification of the molten metal oxide and the like, and the outflow speed is reduced, thereby lowering work efficiency. The sleeve 5 is removed from the flange 4 and converted to a new one.

In order to replace the sleeve, the breaker breaks the connecting part of the sleeve, drops it into the furnace, removes it from the charge port 3, and places a new sleeve after the above-mentioned removal, and places the end of the sleeve 5 at the end. The portion is welded to the tap hole flange 4 and attached.

However, these devices conventionally used for replacing the sleeve of a converter use a commonly used breaker or gripping tool as it is, so that the sleeve must be replaced by skilled personnel and time in a hot place. Work was required. That is, the sleeve connection part
Must be broken into a shape that allows easy connection of new sleeves.
Work time is inevitably increased.
You. Automated sleeve mounting is also being considered.
However, if the appearance after removing the sleeve is poor, a new
As the welding of the probe becomes more difficult and the equipment becomes more complicated.
Good appearance after removing the sleeve.
There was a need to develop a device that could actually be obtained.

[0006] The inventors of the present invention have conducted various investigations to obtain a converter for exchanging a tapping outlet at a short time without requiring any manpower. As a result, the converter is turned around the rotating shaft 2a. Since it is movably supported and can be stopped at any rotational position, the drift rift breaker device and the sleeve chuck device are set on the device base and placed at a predetermined position with respect to the converter to turn the converter. By moving, the position of the equipment stand with respect to the tapping outlet can be set substantially constant, and the removal and attachment of the sleeve can be performed with a relatively small and simple operation of the equipment on the stand.

[0007] The present invention has been made based on the idea described above, by sequentially using two types of devices on the platform, the sleeve of the converter, can be easily replaced by a small hand, especially exactly sleeve Break and take a new sleeve
An object of the present invention is to provide a tapping outlet changer for a converter that facilitates attachment .

[0008]

SUMMARY OF THE INVENTION A converter tapping sleeve assembly according to the present invention comprises a plurality of positioning holes provided on a floor near a converter, and telescopic legs fitted into these holes. A device table which is arranged with the converter positioned in the forward direction,

A drift breaker device which is set on the apparatus base with its front end directed forward to break a sleeve of a converter tapping port, and which is arranged along with the drift breaker apparatus and has a front end directed in the same direction on the apparatus base. And a sleeve chucking device for setting a new sleeve attached to the

In the above-mentioned drift breaker device, a cutter that is rotated and driven back and forth is attached to a tip end thereof, and is capable of moving in the front-rear direction, moving in the left-right direction, and lowering freely.
In the vicinity of the cutter, a positioning punch for inserting the cutter into a cutter positioning hole formed in the flange of the steel outlet of the converter to determine the position of the cutter and to prevent the cutter from slipping at the start of sleeve breakage. Is provided,

[0011] moving the sleeve chucking device in the longitudinal direction, and freely move in the lateral direction and俯elevation, grips the sleeve at the distal end, the tapping port flange and chuck attaching this is provided Exchanges were used as a means of solving the problem.

[0012] The cutter has a plurality of convex portions on the outer periphery.
It is desirable that the cutter is formed in a petal shape and provided with a hole for ejecting water and / or air substantially at the center of these convex portions, and a button bit provided around the hole.

[0013] Since the exchange of the present invention has the above-mentioned structure, the legs of the apparatus stand are fitted into the positioning holes, and the converter is rotated to set the tapping outlet at a predetermined position. the drift motor breaker apparatus, and the sleeve chucking device, left and right, stretching,俯elevation, by a combination of upper and lower moving operation, an easy and cutter in a short time, and allowed to position the sleeve portion to remove broken, sets a new sleeve can do. When breaking the sleeve,
Insert the positioning punch into the formed cutter positioning hole
To determine the cutter position, and
To prevent lateral misalignment of the sleeve, regardless of the shape of the sleeve.
The tta goes straight without any lateral displacement and stably sleeves
To start destroying. In the initial stage, the sleeve with the correct orientation
After breaking, just push the cutter in,
The breaking of the sleeve can be continued.

[0014]

2 and 3 show an embodiment of a converter for a tapping outlet of a converter according to the present invention.

The exchange 11 has an apparatus base 13 having a rectangular planar shape fixed with two extensible legs 12 opposed to each other at both longitudinal edges at an interval, and a longitudinal direction on the apparatus base 13. Breaker device 14 and sleeve chucking device 15 which are mounted parallel to each other with their tips directed in the same direction, and a general hydraulic mechanism 16 serving as a drive source for these
And so on.

As shown in FIG. 4, the drift breaker device 14 and the sleeve chucking device 15 are slid on horizontal shafts 17, 17 disposed on the device stand 13 at right angles to the devices 14, 15. A bracket 19 fixed to a lower portion substantially at the center of these devices is attached to a movably attached support bracket 18 by a rotation shaft 20. Between the support brackets 18 and slightly behind the brackets 19 of the devices 14 and 15, a tilting hydraulic cylinder 21 for tilting the device is provided at both ends of the horizontal shaft 17.
It is rotatably mounted by a shaft in the same direction as the above.

The drift breaker device 14 includes:
As shown in FIGS. 5 and 6, the drift breaker main body 23 is mounted on the apparatus base 13 so as to be able to move forward and backward by two sets of hydraulic cylinders 22 for the drift breaker apparatus provided in parallel.

At the tip of the drift breaker body 23, a cutter 24 for removing the deteriorated sleeve is attached. As shown in FIGS. 6 and 7, the cutter 24 has a petal-shaped convex portion 25 on the outer periphery, and a hole 25a for ejecting water and / or air is formed at substantially the center of each convex portion 25. A plurality of button bits 25b are formed around the hole 25a. The cutter 24 having this shape can break the sleeve in a straight line without any lateral displacement.

[0019] In the vicinity of the cutter 24, the punch 26 is provided for positioning, FIG. 8, cut formed in the tapped opening flange 4 the tip of the punch 26 as shown in FIG. 9
The cutter 24 fits into the
This is the position of the sleeve to be removed.

The sleeve chucking device 15
Also, as shown in FIG. 10, a sleeve chucking main body 29 is mounted so as to be able to move forward and backward by two hydraulic cylinders for sleeve chucking devices 28, 28 provided in parallel. The distal end of the sleeve chucking body 29 serves as a chuck 30 for gripping a new sleeve and supplying it to the tapping port 3 from which the new sleeve has been removed.

In order to replace the converter sleeve using the above exchanger 11, first, a positioning hole (not shown) provided on the floor is provided so that the exchanger 11 is at a predetermined position with respect to the converter. The leg 12 is fitted and the converter 2 is turned,
When the charging port 1 is turned downward, the tapping port 3 is almost
4, 15 and the tip extension line. The movement of the exchange is usually performed by a crane.

Therefore, the supporting bracket 18 is
The tip position of the drift breaker main body 23 with respect to the tapping port 3 is determined and moved forward by the lateral movement due to the expansion and contraction of the horizontal hydraulic cylinder 31 moved along 7, the tilt by the expansion and contraction of the tilt hydraulic cylinder 21, and the vertical movement by the expansion and contraction of the legs. Then, the punch 26 is fitted into the positioning hole 27 of the tap hole flange 4.

[0023] The above operation is converter 2 is rotated, the position of the switch 11 in consideration are determined it, the cut
It is easy to fit the punch 26 to the motor positioning hole 27. By this operation, the cutter 24 is located at a position facing the sleeve to be removed.

Next, when the cutter 24 is driven, the cutter 2 is driven.
4 is rotated and driven back and forth, and the sleeve is broken. At this time, insert the punch 26 into the cutter positioning hole 27.
As a result, the cutter 24 driven by rotation causes the lateral displacement.
Initiate the destruction of the sleeve without causing
Just push the 24 toward the sleeve,
Breaks the sleeve efficiently while going straight without causing
be able to.

In this case, if a cutter having another shape is used, the left
The right hand shake is large and it is difficult to operate. Also after removing
Poor appearance, laborious to install new sleeve
However, the above-mentioned convex portion 25 is formed.25Hole 25
a, the cutter provided with the button pit 25b24
Has good straightness, the sleeve is efficiently removed and removed
Good after appearance, new sleeve is easy after the above removal
The flange at the base of the sleeve is
It can be easily welded and attached to the die 4.Cutter 24
Straightness greatly affects the appearance of the sleeve after removal
However, in the exchange of the present invention, (1) cutter positioning holes
27, a punch 26 is inserted, and (2) a hole is formed in the projection 25.
25a, the cutter 24 provided with the button pit 25b
It is possible to stably maintain the straightness by using
Good appearance after removing the sleeve.
Installation of the regulation sleeve becomes easy. This allows three
New sleeves can be securely attached by using the chucking device
And it becomes simple.

After attaching the above-mentioned sleeve, the charging port 1
Then, refractory mortar or the like is injected and fixed between the sleeve and the broken converter refractory, and the sleeve replacement operation is completed.

[0027]

As described above, since the converter is rotatable about the support shaft and can be stopped at an arbitrary rotation position, the exchange is controlled so that the position with respect to the converter is constant. by arranging the position for tapping nozzle of drift data breaker body and the sleeve chucking body is mounted on the apparatus base of the exchange is substantially constant, drift motor breaker device, the left and right sleeve chucking device, upper and lower,俯elevation, stretch slight by the adjustment, can be applied to tapping nozzle, moreover cutter in straightness, Sri without departing beside
Can be broken and good appearance after sleeve removal
This makes it easier to automate the installation of new sleeves.
Therefore, there is an advantage that replacement can be performed in a short time by a small number of workers.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a converter.

FIG. 2 is a plan view of the converter tapping port changer.

FIG. 3 is a view taken along line III-III in FIG. 2;

FIG. 4 is a detailed view of a portion A in FIG. 3;

FIG. 5 is a side view of the drift breaker device.

FIG. 6 is a front view of the cutter.

FIG. 7 is a side view of the cutter.

FIG. 8 is a front view of a tapping port flange.

FIG. 9 is a view in which a punch at the tip of a drift breaker main body is fitted into a positioning hole of a tapping port flange.

FIG. 10 is a side view of the sleeve chucking device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Charge port 2 Converter 2a Rotary shaft 3 Product spout (tapping port) 4 Tapping port flange 5 Sleeve 11 Converter tapping port changer (exchanger) 12 Telescopic legs (legs) 13 Device stand 14 Drift breaker device (Equipment) 15 Sleeve chucking device (Equipment) 16 Hydraulic mechanism 17 Horizontal axis 18 Support bracket 19 Bracket 20 Rotating axis 21 Tilting hydraulic cylinder 22 Hydraulic cylinder for drift breaker device 23 Drift breaker main body 24 Cutter 25 Convex part 25a Hole 25b Button Bit 26 Punch 27 Positioning hole for tapping flange 28 Hydraulic cylinder for sleeve chucking device 29 Sleeve chucking body 30 Chuck 31 Lateral hydraulic cylinder

Continuing on the front page (72) Inventor: Shoichi Tajima 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nippon Kokan Co., Ltd. (72) Kozo Hanari 1-1-2, Marunouchi, Chiyoda-ku, Tokyo Nippon Kokan Co., Ltd. (72) Inventor Tsuneo Suzuki 1-34-1 Akabani Nishi, Kita-ku, Tokyo Inside Suzuki Giken Kogyo Co., Ltd. (56) References Japanese Utility Model Showa 64-50033 (JP, U) Japanese Utility Model Showa 54-29104 (JP, U) Japanese Utility Model Hei 4-60533 (JP, U) Japanese Patent Publication 62-2606 (JP, B2) Japanese Utility Model 52-26483 (JP, Y2)

Claims (2)

(57) [Scope of request for utility model registration] 1. A sleeve changer which is movably disposed near a converter and replaces a sleeve of a converter tapping port, comprising: a plurality of positioning holes provided on a floor near the converter; An equipment base with flexible legs fitted and the converter positioned in the forward direction, and a drift breaker that breaks the sleeve of the converter tapping outlet set on this equipment base with the tip facing forward An apparatus and a sleeve chucking apparatus for mounting a new sleeve, which is mounted on the apparatus base with the tip in the same direction as the drift-breaker apparatus, wherein the drift-breaker apparatus rotates at the tip and moves back and forth. cutter driven is attached, movement of the front and rear direction, the movement and elevation of the left-right direction and is freely, cutter position in the vicinity formed on tapping nozzle flange of the converter of the cutter <br/> Position of the cutter is inserted into the eyelet, and dashed sleeve
Positioning punch is provided to prevent the lateral displacement of the corrupted starting cutter, is the sleeve chucking device moves in the longitudinal direction, and freely is elevation movement and俯in the lateral direction, by grasping the sleeve at the tip, A converter for a tapping tapping sleeve, wherein the tapping flange is provided with a chuck for mounting the same. 2. A cutter attached to the tip of a drift breaker device, the outer periphery of which is formed in a petal shape by a plurality of protrusions, and a hole for ejecting water and / or air is provided at substantially the center of the protrusions. 2. The converter according to claim 1, wherein the cutter is a cutter provided with a plurality of button bits around the hole.