KR20010001284U - Apparatus for removing foreign substance adhered to roof in electric furnace - Google Patents

Abstract

The present invention relates to an apparatus for removing an electric furnace loop for removing a current formed at a predetermined portion of a lower surface of a loop 120 that swings to open and close an upper portion of an electric furnace 110, An arm 30 adapted to be pivotable in a horizontal state via a driving means is mounted on the vertical support 20, and the ends of the arm 30 are pins 52 and 62 so that their upper end portions are rotated up and down. A pair of clamps (50) and (60) are mounted to face each other, and the clamps (50) and (60) are connected to rotate in opposite directions with each other via a link bar (74), and one clamp is connected to each other. It is characterized in that the rotational force is provided from the cylinder 40, so that the present time can be more effectively removed from the lower surface of the loop which is kept separated from the upper part of the electric furnace when the raw material is charged.

Description

The apparatus for removing the furnace loop now {APPARATUS FOR REMOVING FOREIGN SUBSTANCE ADHERED TO ROOF IN ELECTRIC FURNACE}

The present invention relates to a device for removing the now attached to the loop of the electric furnace, more specifically, it is possible to more effectively remove the present from the lower surface of the loop that is kept separated from the top of the electric furnace when charging the raw material. The present invention relates to a device for removing a furnace loop.

In general, the electric furnace equipment 100 is used to melt raw materials such as scrap metal by using arc heat through the electrode 102, which can accommodate a certain amount of raw materials as schematically illustrated in FIG. 1. An electric furnace 110 having a container shape with an open top and a loop 120 mounted with an electrode 102 while covering the upper opening of the electric furnace 110 when melting raw materials. In order to melt the raw materials using the electric furnace equipment 100, first, the loop 120 covering the upper side opening of the electric furnace 110 is pivoted to a predetermined position so as not to interfere with the raw material charging by using the turning device. Move (see Fig. 2), and continue charging the raw material into the electric furnace 110, and when the loading of the raw material is completed, the loop 120 is moved again to cover the upper side opening of the electric furnace 110, this state Arc heat is generated through the electrode to melt the raw material.

During operation of the electric furnace, a large amount of dust is generated and the melt is scattered. Among them, the dust is discharged to a dust collecting facility (not shown) through the elbow 130 formed on one side of the roof 120, and the melt is looped. Its own blocking action prevents it from flying outside. By the way, the inner surface portion of the elbow 130 and the upper surface of the loop 120 at the predetermined portion (140a) (140b) is formed by the adhering melt is formed, which is generated during the operation of the electric furnace As the fly ash is biased toward the elbow 130 with the dust by the suction force of the dust collector, a part of the lower inner surface of the bent portion of the elbow 130 and the elbow 130 of the upper surface of the loop 120. Is assumed to form now as it is attached to the located portion.

As described above, the currents 140a and 140b formed in the loop 120 and the elbow 130 cause problems in stable operation of the facility, such as acting as an interference factor during the turning operation of the loop 120 for raw material loading. Therefore, the current must be removed at an appropriate time (usually when the loop is displaced from the top of the furnace for raw material loading).

Conventionally, the forklift is removed from the loop using a forklift, and the now formed in the elbow is manually removed. In the method of removing the loop using the forklift 150 (see FIG. 3), the jig for removing the now is Mounting 152 on the forklift 150 to remove the current 140a by hitting the current 140a formed on the lower surface of the loop 120, which is provided in the turning device of the loop 120 In addition to the damage caused by the impact of the cylinder, as well as the need for a separate operator for operating the forklift 150 was to generate a variety of problems, in the method of removing the elbow by hand (see Fig. 4) By using a separate jig 162, the worker 160 directly removes the current 140b formed on the inner surface of the elbow 130, which is close to the electric furnace 110 having a poor working environment in a high temperature state. The problem had to be removed now.

The present invention has been devised in view of the above-mentioned conventional problems, and an object thereof is that an electric furnace that can be removed more effectively without using a forklift truck or an operator directly accessing the electric furnace attached to the loop of the electric furnace. The present invention provides a device for removing the loop.

1 and 2 show an approximate configuration and present formation of a typical furnace installation;

3 and 4 illustrate a method of removing the now of an electric furnace by the prior art;

Fig. 5 is a schematic view showing a state in which the current of the loop is removed by the now removing device of the present invention.

Figure 6 is a block diagram showing a state in which the apparatus of the present invention is supported on the installation frame;

Figure 7 is a partially cut away perspective view showing the arm end configuration which is the main part of the present invention;

FIG. 8 is an explanatory diagram showing an operating state of the clamp shown in FIG. 7; FIG.

9A and 9B show the structure of an elbow modified by the present invention;

Fig. 10 is a configuration diagram showing a state in which the elbow is now removed by the apparatus of the present invention.

Explanation of symbols on the main parts of the drawings

20 ... vertical support

22 ... drive means

30 ... arm

40 ... cylinder

50,60 ... clamp

52,62 ... pin

72 ...

74 ... Link bar

80 ... Elbow

84 ... rotating body

86 ... weight

120 ... loop

As a technical configuration for achieving the above object, the present invention, in the device for removing the present formed on a portion of the lower surface of the loop that swings to open and close the upper part of the electric furnace, drive means to the vertical support of the installation frame Arms adapted to be pivotable in a horizontal state are mounted, and a pair of clamps are mounted at ends of the arms to face each other via pins so that each upper end thereof rotates up and down. By means of providing a removal device of the furnace loop, which is connected in rotation in opposite directions to each other, and wherein one clamp is provided with a rotational force from the cylinder.

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

5 shows that the device 1 of the present invention is mounted to a frame 10, such as a tapping deck of an electric furnace installation.

The device 1 has a vertical support 20 which is fixed on the frame 10, as shown in more detail in FIG. 6, which has a pivotable arm 30 around it. It is mounted, and the swinging behavior of the arm 30 is made by a driving means made of the electric motor 22 or the like. Of course, the structure in which the rotational force of the electric motor 22 is transmitted to the arm 30 can be made in various ways, which can be easily implemented by those skilled in the art, and a detailed description thereof will be omitted. In addition, the arm 30 is preferably to be able to move in the vertical direction by the vertical cylinder (24).

The arm 30 is formed in a direction substantially perpendicular to the vertical support 20 and has an arm body 32 having a predetermined length, and the rear end portion of the arm body 32 is located on the vertical support 20 side. A cylinder 40 rotatably mounted is built in, and the rod 42 of the cylinder 40 extends a predetermined length toward the end side of the arm body 32.

The end structure of the arm body 32 is as shown in Figs. 7 and 8, which will be described in more detail, bent in the shape of a circular arc at the end of the arm body 32 to form a crank-like shape. The first clamp 50 and the second clamp 60 having a branch rotatably mounted via the pins 52, 62, wherein the first clamp 50 and the second clamp 60 is a concave portion Arranged to face each other. The first clamp 50 and the second clamp 60 are each composed of a plurality of crank-type body disposed in parallel apart from each other by a suitable distance. In addition, the first clamp 50 and the second clamp 60 are connected to each other by a link bar 74 so that the end portions of the clamps 50 and 60 rotate closer to or farther from each other. An end of the link bar 74 is rotatably connected to each of the first clamp 50 and the second clamp 60 by means of pins 54 and 64, wherein any one clamp, as seen in the figure, In this case, when the pin 54 is located below the pin 52 that rotatably supports the first clamp 50 to the arm body 32, the other clamp, here the second clamp 60, is the arm. The pin 64 is configured to be positioned above the pin 62 that is rotatably supported by the main body 32. Then, the clamp 50 located close to the rod 42 of the cylinder 40 is connected to the rod 42 via a pin 56 to receive rotational power. Of course, each of the pins 52, 54, 56, 62, and 64 is connected to each other so that the plurality of crank-type bodies constituting the clamps 50 and 60 may maintain a parallel state to each other. It serves as a fixing medium. Preferably, support pins (58) and (68) are formed at the upper end of each of the clamps (50) and (60) in the transverse direction, and at the center of each of the support pins (58) and (68), the claws are formed. It is preferable to form the claws 59 and 69 integrally.

In addition, the end surface of the second clamp 60 with respect to the arm body 32 is mounted with an extension 70 made up of a pair of bodies parallel to each other while protruding a predetermined length while having a slight upward inclination, such An end portion of the extension 70 is provided with a push rod 72 installed in the horizontal direction to connect the bodies to each other. In addition, the extension 70 is preferably connected to the second clamp 60 through the pin 71 so as to be rotatable, and in this case, limiting the upper and lower rotational state of the extension 70 Stoppers 76a and 76b should be formed in the second clamp 60.

And, the elbow 80 is preferably modified as shown in Figures 9a and 9b for the bent bottom surface, which is at least part of the area including the now formed area is cut in the elbow body A rotating body 84 separated from the 82 is mounted, and the rotating body 84 is rotatably connected to the elbow body 82 through the hinge shaft 85 at the lower end thereof. Of course, such a rotating body 84 may open (close the state shown in Figure 9a) or close (shown in Figure 9b) of the elbow body 82, depending on the rotational state, dust collection if closed It is preferable to follow the inner surface contour of the elbow body 82 forming a path. In addition, the weight 86 having a proper weight is integrally fixed to the upper outer surface portion of the rotor 84 so that the rotor 84 may move the hinge shaft 85 by the weight of the weight 86. It always provides a rotational force to the lower side to the center, the rotation of the rotor 84 by this weight 86 is limited through the stopper 87 fixed to the elbow body 82, by the stopper 87 When the rotation of the rotating body 84 is stopped and the state is maintained, the cutout of the elbow body 82 is closed by the rotating body 84. Reference numeral 89 is a connector that connects the rotating body 84 and the elbow body 82 so as to be flexible and to provide an elastic force for lowering and rotating the rotating body 84. In addition, when the loop 120 pivots toward the apparatus 1 side, a groove on which the pusher 72 of the apparatus 1 can be fitted to the end surface of the apparatus 1 side with respect to the weight 86. 86a).

The device 1 of the present invention having such a configuration can remove the seams 140a formed on the lower surface of the loop 120 and the seams 140b formed on the inner surface of the elbow 80 very simply and effectively, First, in order to remove the now formed on the lower surface of the loop 120, as shown in Fig. 5, the loop 120 is turned to the apparatus 1 side, and the apparatus 1 drives the electric motor 22. The arm 30 pivots toward the loop 120 side. In this state, the rod 42 of the cylinder 40, which has been retracted, is driven forward, and the driving of the rod 42 is the first clamp 50 and the second, which are in a state of being separated from each other as shown by a dotted line in FIG. The clamp 60 is rotated close to each other as shown by the solid line. Of course, the behavior of the first clamp 50 and the second clamp 60 is made possible by the link bar 74 connecting the clamps 50 and 60 to each other, thus attaching to the bottom surface of the loop 120. Between the end portions of the clamps 50 and 60 and the clamps 50 and 60 between the first clamp 50 and the second clamp 60 which are rotated in the direction in which the current 140a is close to each other. It can be removed by being bitten by the formed toenails (59, 69). After removal of the current 140a, the rod 42 of the cylinder 40 retreats and the clamps 50 and 60 also rotate to the initial state to wait for the next removal of the current 140a.

In addition, the apparatus of the present invention can also be used to remove the now 140b formed in the inner surface portion of the elbow 80, as shown in Figure 10, the weight of the rotating body 84 by the push rod 72 When the weight 86 is pushed, the weight 86 rotates upwardly, and the current formed in the inner surface portion of the rotor 84 by the behavior of the weight 86 may drop off. . Of course, the above-described behavior may be achieved by advancing the rod 72 or by lowering the loop 120 itself.

As described above, according to the present invention of the furnace loop removal device according to the present invention, the electric furnace by simply and effectively removing the current formed on the bottom surface of the roof by using a clamp that is opened or moved away from each other by a cylinder It can improve the stability to the operation.

In addition, unlike a separate worker removes the current in close proximity to the electric furnace in a high temperature state, since it can be removed now automatically or by a remote operation, it has the effect of improving the poor now removing work environment.

Claims (2)

In the device for removing the current formed in a portion of the lower surface of the loop 120 that swings to open and close the top of the electric furnace 110, An arm 30 adapted to be pivotable in a horizontal state via a driving means is mounted on the vertical support 20 of the installation frame 10, and the upper end of each of the arms 30 is rotated up and down. A pair of clamps 50 and 60 are mounted to face each other via pins 52 and 62, and the clamps 50 and 60 are connected to rotate in opposite directions to each other via a link bar 74. And a clamp is provided with a rotational force from the cylinder (40). The method of claim 1, The end clamp 60 of the arm 30 is provided with a push rod 72 protruding forward and fixed integrally so that the push rod 72 is provided at the lower bend of the elbow 80 of the loop 120. An apparatus for removing the electric furnace loop, characterized in that it operates to push and rotate the rotating body (84) which rotates and lowers by the own weight.