KR100944434B1 - Apparatus for adjusting the electrodes of electric furnace with the function of protecting the surface of electrodes - Google Patents

Abstract

The present invention assembles a new electrode in an arc furnace, and then provides efficient electrode adjustment, and at the same time, the electrode having an electrode surface protection function that can prevent deterioration of the electrode surface and electrode side due to the high temperature emitted from the inside of the furnace A device for adjusting, comprising an elevating cylinder (54) rotatably installed in an inner space of a base cylinder (51) provided on an upper surface of an electrode arm (5) holding a electrode (1), and an upper portion of an axis (54a) thereof. A device moving means comprising: a lifting cylinder (50) fixed at the same time and inserted into the base cylinder (51) to move up and down; Rotating cylinder 33 which is installed to be rotatable in the inner space of the other side of the device fixing stand 35, one side of which is fixed to the upper end of the elevating cylinder 51, and the lower cover and the protective cover 20 fixed to the lower end thereof And the inclined surface of the lower surface such that the insulating cap 21 attached to the inner space thereof, the contact piece 25 fixed with a pair of contact plates 27 penetrating both sides thereof, and the inclined surface of the upper end thereof. Electrode having an electrode surface protection function, characterized in that it consists of a pressing piece (24) formed and an electrode fixing means consisting of a hydraulic cylinder (23) fixed to the upper side of the protective cover 20 is fixed to the upper end thereof Provide an adjustment device.

Electric furnace, electrode, protective cover, lifting cylinder, contact plate, rotating cylinder, pressing piece

Description

Electrode regulator with electrode surface protection function {APPARATUS FOR ADJUSTING THE ELECTRODES OF ELECTRIC FURNACE WITH THE FUNCTION OF PROTECTING THE SURFACE OF ELECTRODES}

1 is a conceptual diagram illustrating an electrode assembly process of an electric furnace;

2 is a conceptual diagram illustrating a height adjustment concept of an electrode assembled in an electric furnace;

3 is a perspective view showing a clamp of a conventional electrode height adjustment function;

4 is a perspective view showing the overall configuration of an electrode adjusting device having an electrode surface protection function according to the present invention;

5 is an enlarged partial cutaway perspective view showing an electrode holding means constituting an electrode adjusting device having an electrode surface protection function according to the present invention;

6 is a partially enlarged perspective view of an electrode holding means constituting an electrode adjusting device having an electrode surface protection function according to the present invention;

7 is a cross-sectional view of electrode holding means constituting an electrode adjusting device having an electrode surface protection function according to the present invention;

8 is a partial cutaway perspective view showing the internal structure of the electrode holding means constituting the electrode adjusting device having an electrode surface protection function according to the present invention;

9 is a partially cutaway perspective view showing the configuration of a rotating means for rotating an electrode holding means constituting an electrode adjusting device having an electrode surface protection function according to the present invention;

10 is a partial cross-sectional view of the rotating means for rotating the electrode holding means constituting the electrode adjusting device having an electrode surface protection function according to the present invention;

Fig. 11 is a partial cutaway perspective view showing a device moving means constituting an electrode adjusting device having an electrode surface protection function according to the present invention;

12 is a partially enlarged cross-sectional view of a device moving unit constituting an electrode adjusting device having an electrode surface protection function according to the present invention;

Fig. 13 is a use state diagram showing a use state of the electrode adjusting device having the electrode surface protection function according to the present invention.

♣ Explanation of symbols for main part of drawing ♣

1: (bottom) electrode 2: (upper) electrode 3: electrode clamp 5: electrode arm

6: electrode nipple 8: furnace body 51: base cylinder 54: lifting cylinder

50: lifting cylinder 35: device holder 33: rotating cylinder 20: protective cover

21 Insulation Cap 27 Contact Sheet 25 Contact Sheet 24 Push Button 23 Hydraulic Cylinder

The present invention relates to an electrode adjusting device having an electrode surface protection function, and more particularly, to assemble a new electrode in an arc furnace and to provide efficient electrode adjustment (rotation and elevation of the electrode), while simultaneously The present invention relates to an electrode adjusting device having an electrode surface protection function capable of preventing deterioration of an electrode surface and an electrode side surface due to a high temperature emitted from the same.

Typically, as shown in FIG. 2, the electric furnace uses electric arc heat to bring the three-phase electrode 1 into contact with the scrap 9 charged inside the furnace body 8, and thus, scrapes using arc heat and radiant heat. 9) to dissolve. At this time, oxygen is blown into the furnace for dissolution time and decarburization and uniformity of the melt, and work in parallel.

Generally, as illustrated in FIGS. 1 and 2, the carbon electrode rod of the electric furnace is gripped by the clamp 3 of the electrode holder 4 so that three electrodes 1 are vertically assembled and used. The electrode 1 is adjusted and assembled by oxidizing wear and deterioration wear of the tip of the electrode, and the assembling process fixes the electrode nipple 6 to the upper end of the worn lower electrode 1 and then places a new upper portion thereof. The electrode assembly 7 transfers the upper electrode 2 of the assembly and is fastened.

At this time, assembling of the electrode 1 is performed by assembling the electrode 1 of the uppermost part of the electrode 1, which is normally vertically assembled, up to about two thirds of the electrode 1 from the electrode holder 4. The electrode is to assemble the electrode 1 at a suitable height to prevent trouble from the furnace body ceiling (cap part) and the furnace body 8.

After using the electrode 1 several times in this manner, after confirming that the lower end of the electrode 1 became deteriorated and oxidized, and in order to give the arc phenomenon of the electrode 1 more smoothly, Visually adjusting the up assembled electrode 1 downwards.                         

The problem of this electrode adjustment operation is that the electrode 1 is completely detached from the electrode clamp 3 by loosening or tightening the electrode clamp 3 holding the electrode 1 by the naked eye of the operator. The phenomenon of contact with the inner bottom occurs frequently, which prevents accurate electrode adjustment.

In order to solve the problems of the conventional electrode adjustment operation as described above, as shown in Figure 3, while providing the hydraulic motor 148 and a plurality of members on the electrode clamp 120, the guide rolls (150, 152, 182) therein The adjusting device is disclosed so that the electrode 1 is moved up and down by rotation of a gear provided to the subsidiary body when the hydraulic motor 148 rotates by installing the rotational direction in an eccentric manner.

However, even though the electrode adjusting device can provide the electrode adjusting operation, the electrode assembly is not possible due to the electrode wear phenomenon caused by the surface degradation and side oxidation or deterioration of the electrode during assembly operation. It occurs and the phenomenon of closing the electrode is generated.

In addition, in order to prevent such a phenomenon, the operation was performed by putting a socket protective cover (not shown) on the upper surface of the electrode 1, but the surface of the electrode was deteriorated due to the high temperature heat and fume of the electrode 1 when the furnace body was tilted. Is generated,

In particular, when assembling the electrode 1, the worker cleans the surface of the electrode at high temperature using high pressure air.The deteriorated fume attached to the surface of the electrode cannot be cleaned by high pressure air. The cleaning work is performed while scraping the surface. At this time, by the high temperature heat radiated from the furnace, the worker causes a serious impediment to safety.

In order to solve the above problems, the present invention is to hold the electrode to the electrode holding means that can cover and grip the upper end of the electrode, and the device moving means that can lift or lower it or move the position from the upper end of the electrode The present invention provides an electrode adjusting device having an electrode surface protection function capable of maximizing electric productivity by preventing electrode loss while simultaneously providing an efficient electrode adjusting operation.

In order to achieve the above object, the present invention is a device for adjusting the electrode by raising or lowering the electrode inserted into the furnace body of the electric furnace, the base cylinder inner space provided on the upper surface of the electrode arm for holding the electrode A device moving means comprising a lifting cylinder installed to be rotatable in the lifting cylinder, and a lifting cylinder inserted into the base cylinder inner space while the upper portion is fixed to the upper end of the cylinder shaft; A rotating cylinder which is installed to be rotatable in the inner space of the other side of the apparatus fixing device having one side fixed to the upper end of the elevating cylinder and extended downward, a protective cover fixed to the lower end thereof, and an insulating cap attached to the inner space thereof; A pair of contact plates fixed to a pair of contact plates penetrating both sides of the protective cover and the insulating cap, a pressing piece having a lower surface inclined to contact the inclined surface of the upper end thereof, and being axially fixed to the upper end of the protective cover Provided is an electrode adjusting device having an electrode surface protection function, comprising an electrode fixing means comprising an hydraulic cylinder fixed to a side surface.

In addition, the present invention is rotatable by the rotary gear is fixed to the lower portion of the base cylinder while the lower and lower cylinder is fixed to the rotary gear, the connecting gear and the gear coupled to the drive gear is coupled to the lower cylinder of the base cylinder. It provides an electrode adjusting device having an electrode surface protection function, characterized in that configured to

In addition, the present invention is the electrode is characterized in that the inner surface is elastically supported by the return spring is guided to the spring guide installed in the protective cover, the lower surface is guided by the close guide fixed to the protective cover Provided is an electrode regulator with surface protection.

In addition, the present invention is installed so that the rotation cylinder is rotatable by the cylindrical gear which is fixed to the upper end penetrated in the other inner space of the device fixing, and a drive motor for axially coupling the motor gear coupled to the gear, into the inner space Provided is an electrode adjusting device having an electrode surface protection function, characterized in that the hydraulic line is guided.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of the present invention.

4 is a perspective view showing the overall configuration of an electrode regulating device having an electrode surface protection function according to the present invention.

As shown in Fig. 4, the present invention is largely characterized by a base cylinder 51 fixed to an upper surface of an electrode arm 5 provided with an electrode clamp 3 and a holder 4 for holding an electrode 1; A device moving means comprising a lifting cylinder (50) inserted into the inner space thereof to be rotatable and lifting up and down, and a device fixing stand (35) fixed to an upper surface thereof; Rotating cylinder 33 is fixed to the lower surface of the device fixing unit 35 so as to be rotatable, the protective cap 20 is fixed to the lower end thereof, and installed in the inner space of the fixed case 22 is installed on both sides thereof It consists of an electrode fault means which consists of an electrode contact plate 27 which is operated.

5 is an enlarged partial cutaway perspective view showing an electrode holding means constituting an electrode adjusting device having an electrode surface protection function according to the present invention, Figure 6 is an electrode constituting an electrode adjusting device having an electrode surface protection function according to the present invention Partial enlarged perspective view of the fixing means, Figure 7 is a cross-sectional view of the electrode fixing means constituting the electrode adjusting device having an electrode surface protection function according to the present invention, Figure 8 is an electrode adjustment having an electrode surface protection function according to the present invention It is a partial cutaway perspective view which shows the internal structure of the electrode holding means which comprises an apparatus.

5 to 8, the electrode fixing means of the present invention, first, the insulating cap 21 is almost similar to the diameter of the electrode 1 to accommodate and insulate the upper end of the electrode (1) Prepared,

The protective cover 20 is bolted to the outside of the insulating cap 21 to protect the electrode 1 and the insulating cap 21.

An incision opening is formed at both side portions of the insulating cap 21 and the protective cover 20 which are fixed as described above, and the close contact plate 27 to the incision opening is located.

The contact plate 27 is processed in a streamlined form so as to be in close contact with the circular electrode 1, the inner surface portion thereof is formed with an uneven portion 27a to increase the gripping effect of the electrode (1).                     

The contact plate 27 formed as described above is fixed to the L-shaped contact piece 25 in the rear portion, the inner surface of the contact plate 27, the spring guide 28 fixed to the side of the protective cover 20 It is elastically supported by the return spring 28 is inserted into the guide.

In addition, the L-shaped contact piece 25 is configured to be guided while the lower surface is supported by the contact guide 30, that is provided in the lower portion, that is, the contact guide 30 is fixed to the protective cover 20.

The upper surface of the L-shaped contact piece 25 guided and supported as described above forms an inclined surface that is inclined outward, and comes into contact with the inclined surface of the pressing piece 24 described below.

Since the lower surface of the pressing piece 24 installed to contact the inclined surface of the contact piece 25 is an inclined upwardly inclined surface, the contact piece 25 is operated in a downward direction by receiving a predetermined pressing force of the pressing piece 24. ) Is to move forward toward the protective cover (20).

Therefore, the means for applying a pressing force to the pressing piece 24 is axially fixed to the upper end of the pressing piece 24, the hydraulic cylinder 23 is fixed to the holder 31 fixed to the upper portion of the protective cover 20 to be.

That is, as the cylinder shaft 23a of the hydraulic cylinder 23 is expanded or contracted, the pressing piece 24 is raised or lowered, and according to the action of the pressing piece 25, the pressing piece 25 moves the contact plate 27 to the electrode ( 1) to close or let go.

The contact plates 27 operating as described above are installed at two places to face each other in the drawings of the present invention, but may be installed in the protective cover 20 at regular intervals.

Figure 9 is a partial cutaway perspective view showing the configuration of the rotating means for rotating the electrode holding means constituting the electrode adjusting device having an electrode surface protection function according to the present invention, Figure 10 is an electrode surface protection function according to the present invention It is a partial sectional view of the rotating means which rotates the electrode holding means which comprises the electrode adjusting apparatus which combined.

The electrode fixing means of the present invention installed as described above is configured to add a rotating device to rotate by holding the electrode (1).

That is, as shown in Fig. 7 and Figs. 9 to 10 with reference to the above-described configuration, the rotating cylinder 33 in the center of the upper surface of the protective cover 20 constituting the electrode fixing means of the present invention is a flange ( 33) fixed,

The fixed rotating cylinder 33 extends upward to penetrate the device fixing stand 35 constituting the device moving means.

As shown in FIG. 10, the rotating cylinder 33 penetrating the apparatus fixing stand 35 is supported by a bearing 41 so as to be easily rotated. A cylindrical gear is provided at an upper end of the rotating cylinder 33 thus installed. 38 is fixed.

One side of the cylindrical gear 38 is geared to the motor gear 39, the motor gear 39 is fixed to the shaft of the drive motor 40 is fixed to one side of the rotary cylinder 33 is a rotating cylinder ( 33) is configured to be rotatable.

In addition, the rotating cylinder 33 installed as described above is an hydraulic inline (In line) 34a and out line (34b) for supplying hydraulic pressure to the hydraulic cylinder 23 of the electrode fixing means described above in the inner space. ) Is provided with a hydraulic pipe (63) of a double pipe structure, each of which is connected to the pipe,                     

The hydraulic pipe 63 is a hydraulic supply pipe (65b) that is connected to the hydraulic inline (34a) inside, the hydraulic discharge pipe (65b) is connected to the hydraulic outline (34b) outside.

In addition, the hydraulic pipe 63 has a packing material 62 for supporting the hydraulic inline and outline (34a, 34b) piped in the device fixing unit 35 in the tension of the spring (not shown) installed in the inner space up and down By connecting the pipes with the hydraulic drum 64 inserted into the oil leakage of the oil is further prevented.

The hydraulic double pipe 63 installed as described above is stably fixed and supported by the double pipe guide 37 fixed to the apparatus fixing stand 35, and the hydraulic inline and outline 34a and 34b and the double pipe guide support 36 are installed. ) Should be installed so as not to interfere with the rotation of the rotary cylinder (33).

Fig. 11 is a partially cutaway perspective view showing a device moving means constituting an electrode adjusting device having an electrode surface protection function according to the present invention, and Fig. 12 is an apparatus forming an electrode adjusting device having an electrode surface protection function according to the present invention. Partial enlarged cross-sectional view of the vehicle.

As described above, the rotary cylinder 35 in which the hydraulic inline and the outline 34a and 34b are piped is installed to be rotatable to the apparatus fixing stand 35, and the apparatus fixing stand 35 has the other lower surface of the present invention. It is fixed to the upper end of the elevating cylinder 50 of the device moving means constituting.

As shown in Fig. 11 to 12, the device moving means constituting the present invention comprises an elevating cylinder (50) for fixing the device fixing stand 35, and the exterior portion is composed of a base cylinder (51) inserted therein do.

That is, the base cylinder 51 is fixed to the flange 52 by inserting the insulating material 53 at a predetermined position on the upper surface of the electrode arm 5, the rotary motor 58 is mounted on one lower surface.

The mounted rotary motor 58 is a cylinder rotary gear 56 fixed to the lower part of the lifting cylinder 54 built in the base cylinder 51 with the connecting gear 59 in the middle as a power medium. It transmits rotational power to

The end of the cylinder shaft 54a of the elevating cylinder 54 which is installed to be rotatable in the inner space of the base cylinder 51 is coupled to the lug 55 at an inner upper surface of the elevating cylinder 50. , The elevating cylinder 50 is to be rotatable and capable of elevating at the same time.

In addition, as shown in the cross-sectional view shown in Figure 12, the rotary gear 56 is fixed to the lower portion of the elevating cylinder 54, the rotation gear 56 is configured to rotate more smoothly by inserting the bearing 61 on the lower surface. .

Hereinafter, the operation of the present invention will be described in detail.

Fig. 13 is a use state diagram showing a use state of the electrode adjusting device having the electrode surface protection function according to the present invention.

First, as shown in FIG. 1, when the new upper electrode 2 is coupled to the nipple 6 on the lower electrode 1, as shown in FIG. 2, the scrap 9 of the inner space of the furnace body 8 is shown. ) And the position of the electrode 1 by rotating it while adjusting the height so that the electrode 1 abuts.

If the above-described adjustment of the electrode 1 is necessary, by rotating the rotary motor 58 constituting the device moving means of the present invention to rotate the elevating cylinder 54, the shaft 54a and its fixed The lower cylinder 50 is rotated.

When the elevating cylinder 50 is rotated, the device fixing stand 35 is fixed to the upper end of the rotating, the electrode fixing means of the present invention is fixed to the other side of the lower side rotatably fixed electrode 1 Rotation moves to the top.

When the protective cover 20 of the electrode fixing means constituting the present invention is completed to move directly to the upper portion of the electrode 1, the protective cover 20 by operating the lifting cylinder 54 constituting the device moving means downward Cover the upper end of the electrode (1).

As described above, when the protective cover 20 constituting the present invention stably inserts the upper end of the electrode 1, the hydraulic cylinder 23 constituting the electrode fixing means is moved forward to fix it to its shaft 23a. When a pressing force is applied to the pressed piece 24 and the contact piece 25 in contact with the inclined surface of the press piece 24 is horizontally moved in the direction in which the electrode 1 is brought into close contact, the electrode contact plate 27 The upper part of this electrode 1 is firmly gripped.

When the process of holding the electrode 1 of the electrode fixing means as described above is completed, the height of the electrode 1 is adjusted by appropriately adjusting the elevating cylinder 54 constituting the device moving means of the present invention.

When the electrode height adjusting operation is completed, by rotating the drive motor 39 provided in the electrode fixing means constituting the present invention to properly rotate the rotary cylinder 33, the position adjustment of the electrode 1 is also carried out. When the height adjustment operation and the position adjustment operation are finished, when the hydraulic pressure of the hydraulic cylinder 23 of the electrode fixing means is released, the pressing piece 24 rises, and accordingly, the L-shaped contact closely supported by the return spring 29 is performed. The piece 25 retreats and the adhesive plate 27 holding the electrode 1 is released.

Then, the elevating cylinder 54 constituting the apparatus moving means of the present invention is operated up and down, and when the protective cover 20 of the electrode fixing means is completely removed from the upper surface of the electrode 1, the elevating cylinder 54 The rotary motor 58 geared to the lower surface of the to rotate in the opposite direction as before the operation to move the electrode fixing means from the top of the electrode to the original position.

When the device unit return operation of the present invention is completed, a new electrode may be additionally installed, and the above electrode adjustment operation is repeatedly performed, and then the protective cover 20 constituting the present invention returns to its original position before operation. Instead, the electrode socket, to which the top of the electrode 1 and the nipple 6 can be joined, is kept covered so as to be protected from the high temperature in the furnace.

As described above, the present invention provides the effect of preventing the problem of having to close the electrode by deterioration of the electrode surface due to the high temperature heat and fume generated from the furnace which is not provided from the prior art, the electrode side deterioration, and efficient electrode adjustment. By providing the work, the electrode source unit (Ton / kg consumption) is remarkably improved, and the worker's safety accident is prevented from high heat and the electrode adjustment time is shortened.

Claims (4)

In the apparatus for adjusting the electrode by raising or lowering or rotating the electrode (1) inserted into the furnace body 8 of the electric furnace, The upper and lower cylinders 54 are rotatably installed in the inner space of the base cylinder 51 installed on the upper surface of the electrode arm 5 holding the electrode 1, and the upper part is fixed to the upper end of the cylinder shaft 54a. A device moving means comprising a lifting cylinder (50) inserted at the same time to be able to move up and down in the inner space of the base cylinder (51); Rotating cylinder 33 which is installed to be rotatable in the inner space of the other side of the device fixing stand 35, one side of which is fixed to the upper end of the elevating cylinder 51, and the lower cover and the protective cover 20 fixed to the lower end thereof And a close contact piece 25 having an insulating cap 21 attached to an inner space thereof, and a pair of contact plates 27 penetrating both sides of the protective cover 20 and the insulating cap 21. , An electrode fixing means comprising a pressing piece 24 having a lower surface inclined to contact the inclined surface of the upper end thereof, and a hydraulic cylinder 23 fixed to the upper side of the protective cover 20 by being axially fixed to the upper end of the protective cover 20. Electrode control device having an electrode surface protection function, characterized in that the. The method according to claim 1, The elevating cylinder 54 is the base cylinder 51 while the rotary gear 56 fixed to the lower surface thereof, the connecting gear 59 and the driving gear 57 and the gear gear is coupled to the shaft axially coupled Electrode control device having an electrode surface protection function, characterized in that configured to be rotatable by a rotary motor (58) fixed to the lower portion. The method according to claim 1, The close contact piece 25 is elastically supported on the inner surface by the return spring 29 inserted into the spring guide 28 installed in the protective cover 20, the lower surface is fixed to the protective cover 20 Electrode control device having an electrode surface protection function, characterized in that guided by the close guide (30). The method according to claim 1, The rotary cylinder 33 has a cylindrical gear 38 fixed to the upper end portion penetrated in the other inner space of the device fixing unit 35, and a drive motor 40 for axially coupling the motor gear 39 that is gear-coupling therewith. Electrode control device having an electrode surface protection function, characterized in that the rotatable by being installed, the hydraulic line 34 is guided to the inner space.

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