KR920007178Y1 - Device for departing and adhering the movable hood of the converter - Google Patents

Abstract

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Description

Steel Hood Movable Hood Drawer

Figure 1a is a process chart showing the process of drawing out the movable hood of the present invention.

Figure 1b is a view showing the position of the hood during the converter operation and repair work of the present invention.

2 is a use state diagram showing a use state of the present invention.

3 is a perspective view of a jig body device.

4 is a schematic perspective view of a trolley device.

5 is a perspective view of the lifting jig.

6 is a perspective view showing a jig body support method.

* Explanation of symbols for main parts of the drawings

1: Movable Hood 2: Jig Body

3: trolley 4: lifting jig

9: L shape 10: Rail

14 wheel 15 round hole

16: coater fastening device 17: hook hanger

18: reinforcement 19: jig board

20: hoisting road 21: hook beam

22: Do not hook, bar: beam

The present invention relates to a movable hood draw-in and out device. Especially, a movable hood, which is a kind of associative boiler, is installed in the upper part of a steelmaking plant in a steel mill to cool the exhaust gas generated during the molten steel drilling. Surface) It is related to the movable hood take-off device which is degraded after use and steelmaking to replace new products.

In general, the most difficult task during the change of movable hoods is to concentrate the various types of equipment such as raw material input equipment, lance, and furnace cooling equipment on each floor of the converter body. The operation was to take out the heavy-duty movable hood (17.5 tons) into the "B" section where the converter operation room and the molten steel loading crane were located. The draw-out methods used up to now are as shown in FIG. After installing the shackle, the movable hood (10) in the beam (C) and the movable hood (10, the shackle (L) and the movable hood (1) in the state of being wound up, respectively) caught on the hoisting rope end hook by the original value The movable hood is moved to and from the charging crane hoisting distance of the "B" zone by adjusting the length of the connected wire rope with a turn buckle, and the method is performed when the heavy movable hood 1 is inclined. There is a danger of worker's safety accident because there is no fixed support point in the system, and long time (about 13 hours) is used for draw-in / out work due to interference such as adjustment of rope and installation of auxiliary work table. Simultaneously up to nearby converters due to process failure due to use Results in a steel mill major define the material balance (Balance Matelial) a shaking situation when the take-input operation time delay since the tissue has occurred.

On the other hand, the relationship between the arrangement of the surrounding structure during the movable hood (1) draw-out operation is as follows. Beams (e) and beams (bar) are the running rail support beams for converter repair cranes. During operation, the movable hood (1) is located in the "C" area on the side of the converter while it is in close contact with the upper entrance of the converter. Using the converter repair crane, the movable hood 1 is hoisted to a certain height, and then driven to move to the "D" zone on the side layout (with the converter and the movable hood 1 separated) to repair the interior of the converter. Repair work and plumbing of hood (1) and related devices.

Here, the beam (bar) is almost the same as the top of the converter seating hood (1) in consideration of the running of the crane for supporting the converter and peripheral devices at the edges when the operation (when the movable hood (1) is seated on the converter) at the edge. It must be located at a height. In addition, the beam (e) maintains a certain distance from the converter repair work floor (h) in consideration of the work space during the repair work, and is located above the same running rail beam (bar). As a result, the upper floor is designed to the minimum height with the beam (bar) in consideration of the space considering the hoisting device of the converter repair crane (for the draw-out operation of the movable hood 1 having a long solid cycle). Increasing the space allowance increases the building height of the steel mill, which is uneconomical).

Thus, the space margin of the bottom of the floor (sa) and the beam (bar), which are the draw-out points of the movable hood 1, is considerably narrow in consideration of the height of the movable hood 1.

As such, the present invention has been devised to solve the drawbacks of the prior art. By using the draw-out device under conditions of narrow space and interference in the design structure of the converter body, the replacement of the movable hood 1 is shortened. It is to reduce the production stop and to prevent the safety hazards of the repair workers and the damage of the expensive movable hood 1 due to the handling of heavy materials.

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

As shown in FIGS. 1A and 2, the drawer device according to the present invention includes a trolley 3 which compresses the movable hood 1 to move from the inner "A" area to the converter "B" area. It consists of a jig body (2) consisting of a support structure beam and a lifting jig (4) for hoisting the movable hood (1) to serve as a rail of the trolley (3). Figure 1b is a view showing the position of the hood during the converter operation and repair work of the present invention, Is the hood position during operation Is the hood position during converter repair work. Also, Is the converter soluble and cold injection zone, Is the converter tilting device and the peripheral device placement area, and is installed in front of the converter. Is the converter control main control room. And the jig body 2 is provided with a rail 10, the trolley 3 runs as shown in Figure 3, is bolted to the beam (e) by the L-shaped (9), groove The jig sea (2), which is placed on the beam (bar) by (11), is stabilized in the structure of both ends in the "A" section inside the converter.

And the "B" area outside the converter is a structure that is fragile in a cantilever shape on the outside space of the converter, but the recess 11 is limited to the entrance height section of the movable hood 1 so that the structural reinforcement is impossible, so the charge crane sovereignty beam 8 By using the same method as in Fig. 6, the two-terminal structure was introduced.

On the other hand, the molten steel loading train is the converter main equipment, sovereignty is hooked to the molten iron ladle trunnion as shown in Figure 6, the second hook 22 is installed and the hook beam 21 in the ladle width size A pair of hoisting pulleys 20 are installed at both ends.

In addition, the right of protection is constituted as a general hook for converting the path.

In addition, the trolley 3 is a trolley composed of four wheels 14, as shown in FIG. 4, in the center of the deck in consideration of the stable mounting of the movable hood 1 and the height of the withdrawal point. A circular hole 15 was installed so that the bottom radius of the movable hood 1 was inserted.

The lifting jig (4) is designed to be used only for ladle hardness so that the hooking hook (1) can be hooked in the fixed upper limit of the chartered crane support hook (6). 1) the sling wiring is insufficient stroke] As shown in Fig. 5, the hook hanger 17 is welded to the jig plate 19, and a plurality of cotter fastening holes for connection with the movable hood 1 are provided. (16) and reinforcing bar (18).

Referring to the operation of the present invention configured as described above are as follows.

The present invention raises the movable hood (1) on the crane for repairing the converter to the service crane hook (7) to draw the movable hood (1) from the inner "A" area to the outer "B" area of the converter. Move the converter repair crane from the converter repair position "D" to the converter operation position "C" in advance.

Slew-wired jig sea (2) (with trolley (3) mounted on the current surface position) sling-wired to the hoisting hook (6) of the chartered crane, and is inserted from the "B" outside the converter into the "A" area inside the converter. Bolt to the beam (e) and press the jig body (2) after correcting the clearance with the fitting plate on the beam (bar) contact surface. After moving the trolley 3 to the inside of the converter, the service crane hook 7 is lowered to squeeze the movable hood 1 onto the trolley 3, and then the sling wire of the service crane 7 is disassembled.

The hook beam 21 is placed under the jig body 12 and then the level of the hook beam 21 is adjusted by inching operation to adjust the level of the trolley rail 10 of the jig body and to lift the lifting jig 4. In the suspended state, the hoisting hook 6 is placed in the "B" area outside the converter.

Further, the trolley 3 equipped with the movable hood 1 is moved from the inner side "A" to the outer side "B" area by the manpower and the chain block, and then the bow winding hook 6 is lowered and the movable hood 1 and After the lifting jig 4 is fastened, the winding hook 6 is lifted so that the movable hood 1 of the trolley 3 is removed.

Then, after moving the trolley 3 from the outside of the converter "B" to the inside "A", the load crane sowing hook frame 21 is removed from the bottom of the jig body 12, and the soluble charging crane which suspended the movable hood 1 is carried out. The vehicle is moved to a designated position to complete the withdrawal operation of the movable hood 1. In addition, the pulling in of the movable hood 1 is performed in the reverse order.

In this way, the draw-out operation time of the movable hood 1 can be reduced by more than five times as compared to the conventional one, so that the steelworking plant converter can reduce the interruption time of the steelworking plant by waiting for repair work of the molten iron-loading crane, thereby improving productivity and reducing maintenance costs. have.

In addition, the present invention has a stable operation to prevent damage due to safety accidents of high-working workers and fallover fall of expensive movable hood.

Claims (5)

In the conventional steelmaking converter movable hood take-out apparatus, a trolley (3) for compressing the movable hood (1) to move from the inner side "A" to the outer side "B" of the converter, the upper floor (sa) and the converter Between the repair crane rail beam (bar) and the jig body (2) consisting of a support structure beam to play the same role as the rail of the trolley (3), and the lifting jig (4) for hoisting the movable hood (1) and Steelmaking converter movable hood, characterized in that it consists of a plurality of hooks (22) provided to hook and hoist on the molten iron ladle both trunnions, and a hook beam (21) installed on both sides of the hook (22) in a ladle width size Take-out device. The jig body (2) is provided with a rail (10) on which the trolley travels, bolted to the beam (e) by an L-shape (9), and a beam (by the recess 11). The steel jig converter movable hood draw-out apparatus, characterized in that the jig body is supported on a stable. The steel trolley (3) according to claim 1, wherein the trolley (3) is a trolley composed of four rear blades (14), and the circular hole (15) is provided so that the bottom radius of the movable hood (1) is inserted in the center of the trolley deck. Movable hood drawer device. The method of claim 1. The lifting jig 4 is characterized in that the hook hanger 17 is welded to the jig plate 19 and provided with a plurality of cotter fastening holes 16 and reinforcing bars 18 for connection with the movable hood 1. Steel hood movable hood drawer device. 2. The steelmaking furnace movable hood take-out apparatus according to claim 1, wherein a pair of hoisting pulleys (30) are installed at both ends of the hook beam (21).