KR20040027085A - Tapping bar guiding apparatus of a tap hole opener - Google Patents

Abstract

PURPOSE: An apparatus for guiding tapping bar of tap hole opener is provided which guides the tapping bar so that the tapping bar of the tap hole opener is accurately guided to tap hole of blast furnace, and supports the tapping bar so that the tapping bar is maintained in the center of the tap hole even during movements of the tapping bar. CONSTITUTION: The apparatus comprises rotation motors(10) positioned at left and right sides of tap hole and equipped with a rotation shaft(12) parallel to the tap hole; a cylinder(20) perpendicularly fixed to the rotation shaft; a base(30) at the front end of which a sliding support(32) is longitudinally installed side to side, and which is fixed to the front side of the cylinder; racks(34A,34B) mounted on the sliding support so that the racks are moved along the sliding support with being respectively positioned at both sides of the sliding support; tapping bar guiding units(40A,40B) integrally fixed to the racks respectively and quartered to form a tapping bar guiding body roughly in a hollow pipe shape; and a piston mounted on an inner part of the cylinder to move the racks along the sliding support as the piston is being moved back and forth.

Description

Tapping bar guiding apparatus of a tap hole opener}

The present invention relates to a tapping bar induction apparatus of the opening machine, and more particularly, to a tapping bar induction apparatus of the opening machine for guiding the tapping bar of the opening machine can be accurately guided to the exit of the furnace.

In general, the molten iron and slag produced in the furnace are discharged to the outside through the exit port provided in a number of places in the lower portion of the furnace, the exit port is discharged to the refractory referred to as mud material when the molten material consisting of the molten iron and slag is not discharged The molten material is discharged to the outside of the furnace by being blocked by the mud material, and the exit port is blocked by the mud material.

1 is a schematic configuration diagram for explaining a method of opening the outlet of a furnace using a hole of a general configuration, the driving source when the opening machine 110 is located to open the outlet 122 of the furnace 120 The opening 114 is opened by moving the tapping bar 112 toward and out of the tap opening 122.

At this time, the tapping bar 112 of the opening machine 110 must be moved forward and backward in a straight line with the outlet 122 of the blast furnace 120, and the inlet side of the outlet 122 and the outlet 122 of the outlet 122 Induction apparatus for guiding the refractory forming the periphery of the tapping bar 112 is maintained at the center of the outlet 122 without departing from the proper position because the damage caused by contact with the bit and the like provided at the tip of the tapping bar 112 is prevented. Is provided separately.

Figure 2 shows a configuration for guiding the tapping bar using the tapping bar induction device of the open air according to the prior art, the conventional induction device 200 is a cylinder 210 mounted around the outlet 122 of the furnace And a tapping bar guide jig 220 which is installed at the tip of the rod 212 of the cylinder 210 and is opened or retracted by a link structure, and the jig 220 is moved by advancing the cylinder 210. The tapping bar 112 is moved to the front of the tap hole 122 to maintain the tapping bar 112 at the center of the tap hole 122 by the jig 220.

However, such a conventional tapping bar induction device 200 adjusts the position of the jig 220 by using only the cylinder 210 that is moved forward and backward, and the precision thereof is reduced, and is formed while being opened or retracted by the link structure. Since the shape of the tapping bar induction portion of the jig 220 is formed in a crushed circular shape, the tapping bar 112 has a tendency to move to the crushed portion while rotating, so that the path of the tapping bar 112 is a starting hole 122. There is a problem of moving away from the center of the.

In other words, the conventional tapping bar induction device is not able to maintain the tapping bar in the center of the exit port, the junction surface of the exit port and the refractory forming the exit port is damaged and the exit port is damaged by erosion by the melt, and Due to the problem, the task of maintaining the tapping bar in the center of the exit by manual work was performed separately, and the worker was exposed to the risk of safety accidents such as burns caused by radiant heat generated in the large waterway.

The present invention is to solve this conventional problem, to form a path of the tapping bar in a shape surrounding a predetermined length of the tapping bar to guide the tapping bar to be guided accurately to the exit of the furnace and to advance, reverse and rotate the tapping bar. It is an object of the present invention to provide a tapping bar induction device of the opening machine for supporting the tapping bar to be maintained at the center of the exit port during operation.

1 is a schematic configuration diagram for explaining a method of opening the exit port of a blast furnace using a hole of a general configuration;

Figure 2 is a configuration diagram for guiding the tapping bar using the tapping bar induction apparatus of the open air according to the prior art;

Figure 3 is a perspective view of the tapping bar guide device of the open air according to the invention as a whole;

Figure 4 is a detailed view showing a part of the main portion of Figure 3 cut away;

Figure 5 is an external perspective view showing a tapping bar induction unit of the four divided form to form a tapping bar derivative of the present invention;

6 is a perspective view showing another embodiment of the main portion of FIG. 4;

7 is an explanatory view showing the state in which the tapping bar of the open air is guided by the apparatus of the present invention.

※ Explanation of symbols about main part of drawing ※

10: rotating motor 12: rotating shaft

20: cylinder 22: piston

24: rod 26: extension

27A, 27B: rack 28A, 28B: pinion

29A, 29B: Pinion 30: Base

32: sliding support 33: groove

34A, 34B: Rack 35: Spring

38A, 38B: Cylinder 40: Tapping bar derivative

40A, 40B: Tapping Bar Induction Unit 110: Opening Machine

112: tapping bar 122: exit

As a technical configuration for achieving the above object, the present invention, in the device for guiding the tapping bar of the opening machine to the center of the furnace exit port, it is located on both left and right sides of the exit port and the rotary shaft parallel to the exit port ( A rotary motor having 12); A cylinder fixed perpendicularly to the rotation axis; A base fixed to the front of the cylinder with a sliding support formed on the left and right sides of the front end; Racks positioned on both sides of the sliding support and mounted to be movable along the sliding support; A tapping bar induction unit integrally fixed to each of the racks and divided into four sections to form a tapping bar derivative forming a substantially hollow pipe shape; And a piston mounted inside the cylinder to move the rack along the sliding support while moving forward and backward.

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

Figure 3 is a perspective view of the tapping bar induction apparatus of the opening machine according to the present invention as a whole, is provided with a rotary motor 10 is fixed to the structure of the furnace so as to be located on both the left and right sides of the exit port to provide rotational force. .

Since the apparatus of the present invention has a left and right symmetrical structure, only the components on the left side will be described below. The detailed description of the components on the right side will be omitted, and the same reference numerals as those of the components on the left side will be given.

The rotary motor 10 is provided with a rotary shaft 12 located in the direction parallel to the outlet of the furnace, the cylinder 20 is fixed to the end of the rotary shaft 12 in a direction perpendicular to the rotary shaft 12 do.

Hereinafter, referring to FIG. 4, the cylinder 20 has a piston 22 that is built in such a manner as to be moved forward and backward by pneumatic pressure or hydraulic pressure, and at the end of the rod 24 integrally formed with the piston 22. An extension 26 having a rectangular cross-sectional shape is integrally formed, and racks 27A and 27B are formed on both sides of the extension 26 over a predetermined length.

The racks 27A and 27B are engaged with pinions 28A and 28B rotatably mounted to the base 30 so as to be symmetrical with respect to the reference line formed by the forward and backward paths of the rod 24. Each of the pinions 28A and 28B is disposed on a concentric axis, and driven pinions 29A and 29B are integrally formed to be identical to the pinions 28A and 28B, and the base 30 is a cylinder. It is fixed to 20 integrally.

The base 30 is integrally fixed to the sliding support 32 formed long on both sides with respect to the forward and backward paths of the rod 24, the groove 33 is longitudinally elongated in the sliding support 32 It is formed, the grooves 33 are engaged with the driven pinions 29A, 29B, respectively, so as to slide along the grooves 33 during rotation of the pinions 29A, 29B, 34A, 34B on both sides. Is installed, the rack 34A, 34B is elastically supported in a direction closer to each other by the spring 35. At this time, the sliding support 32 is made of a pair parallel to each other, the upper and lower ends of the rack (34A, 34B) is supported so as to slide in each of the grooves 33 of the sliding support 32 desirable.

As shown in Figs. 3 and 4, each of the racks 34A and 34B is integrally fixed with supports 36A and 36B parallel to the rod 24 and having a predetermined length. The tapping bar induction units 40A and 40B are fixed to the ends of the 36A and 36B, respectively, and all the tapping bar induction units 40A and 40B on the left and right sides of the exit port, that is, four tapping bar inductions. Units 40A and 40B constitute a tapping bar derivative 40 in the form of a substantially hollow pipe.

Each of the tapping bar induction units 40A and 40B is divided into three parts. Referring to FIG. 5, the tapping bar of the opening machine is allowed to pass through the tapping bar when the tapping bar moves forward toward the exit port. A small diameter portion 43 having a shape obtained by dividing an inner hollow tube having an inner diameter or a slightly larger inner diameter into four parts having the same size and the same shape, and extending from one end of the small diameter portion 43 to its inner diameter size. Is formed of a tapered portion 42 having a predetermined length in the form of gradually increasing, and a large diameter portion 41 extending from the end of the tapered portion 42 to a predetermined inner diameter.

6 shows another embodiment in which the tapping bar guide units 40A and 40B are mounted on the racks 34A and 34B. In this embodiment, a cylinder 38A is provided to each of the racks 34A and 34B. 38B is provided, and the tapping bar guide units 40A and 40B are mounted on the rods 39A and 39B of the cylinders 38A and 38B, respectively, to drive the cylinders 38A and 38B. It has a structure capable of precise adjustment of the position of the tapping bar guide unit (40A) (40B).

The operation of the present invention having the above configuration will be described.

To guide the tapping bar using the device of the present invention, the tapping bar induction units 40A and 40B, which are part of the tapping bar derivative 40, waiting at a location far from the tapping bar travel path are moved to the tapping bar induction position. First, the cylinder 20 connected to the rotary shaft 12 is rotated by supplying power to the rotary motor 10 to drive the rotary shaft 12 to rotate the shaft 12. 40A are in close contact with each other and the left and right tapping bar induction units 40B are in close contact with each other and at the same time, until the left and right cylinders 20 are coaxially positioned.

When the left and right cylinders 20 are located on the coaxial line, the driving of the rotary motor 10 is stopped, and the piston 22, which has been retracted inside the cylinder 20, is supplied by high pressure or hydraulic pressure. By advancing the piston 22, an extension 26 connected thereto is advanced.

The pinion 28A, 28B engaged with the racks 27A, 27B formed on both sides of the extension 26 is rotated by the forward operation of the extension 26, and at the same time the pinion 28A ( Taping bar inductor 40 by tapping bar induction unit 40A, 40B by moving rack pins 29A, 29B integrally acting on 28B) while moving racks 34A, 34B in proximity to each other. ) Is configured (see FIG. 7).

In this state, the tapping bar 112 is advanced toward the tap hole 122, and thus, the tapping bar 112 passes through the hollow portion of the tapping bar derivative 40 and enters the tap hole 122, thereby allowing the tap tap bar 112 to enter the tap hole 122. It can be maintained at.

Of course, the tapping bar induction apparatus of the present invention is returned to the initial state by the reverse order of the above, the return time can be appropriately selected according to the situation of the opening work.

According to the tapping bar induction apparatus of the opening machine according to the present invention as described above, by moving the tapping bar induction unit formed in the form of a plurality of pieces to form a tapping bar derivative of the type surrounding the path that the tapping bar proceeds to form a tapping bar It has an excellent effect of guiding the lead to the exit.

In addition, the tapping bar derivative of the present invention has an excellent effect in supporting the tapping bar so that it can be maintained at the center of the exit port during the forward, backward and rotational operation of the tapping bar by forming a circular cross section.

Claims (4)

In the device for guiding the tapping bar of the opening machine to the center of the furnace exit, A rotary motor 10 positioned at both left and right sides of the exit port and having a rotation shaft 12 parallel to the exit port; A cylinder 20 fixed perpendicularly to the rotary shaft 12; A base (30) fixed to the front of the cylinder (20) with a sliding support (32) formed left and right at the front end; Racks 34A and 34B positioned on both sides of the sliding support 32 and mounted to be movable along the sliding support 32; A tapping bar induction unit 40A and 40B integrally fixed to each of the racks 34A and 34B and divided into four to form a tapping bar derivative 40 forming an approximately hollow pipe shape; And Tapping bar induction apparatus of the opening machine, characterized in that it includes a piston 22 mounted inside the cylinder 20 to move the rack (34A, 34B) along the sliding support (32) while moving forward and backward. According to claim 1, Extensions 26 are connected to be integrally connected to the piston 22, the racks 27A, 27B formed in the longitudinal direction on both left and right sides, and the rack of the extension 26 The pinions 28A and 28B mounted on the base 30 and the pinions 28A and 28B to be engaged with the 27A and 27B, respectively, and integrally formed on the racks 34A and 34B. Tapping bar induction device of the opening machine, characterized in that it further comprises driven pinions (29A) (29B) mounted to engage each. 3. The opening of claim 2 further comprising a spring (35) adapted to provide elastic repulsion in a direction away from the rack (34A) (34B) between the rack (34A) (34B). Tapping bar induction device. 2. The tapping bar induction unit (40A) (40B) is composed of a small diameter portion (43) and a large diameter portion (41) whose inner diameters are different from each other, and the small diameter portion (43) and the large diameter portion ( 41) between the tapping bar guide device of the opening machine characterized in that the inner diameter is provided with a tapered portion (42) is gradually changed.