JP2003049209A - Method for filling sleeper into blast furnace and hanging tool for sleeper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for filling sleepers by which the filling work of the sleeper performed for preparing of an initial firing in a newly constructed or reconstructed blast furnace, is done with few workers and with reduced labor. SOLUTION: A wire rope 3 is hung down from a manhole for initial firing at the furnace top part in the blast furnace and a power hoist 5 is fitted to the lower end thereof. A wire rope 8 is hung from a hook 6 for hanging down of the power hoist 5, and hanging tool 9 fitted to both ends of the wire rope 8, are detachably attached to the sleeper 13. Further, the sleeper 13 hung up with the power hoist 5 is transported to a prescribed position by drawing a guiding rope 7 connected to the hook 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sleeper filling method performed in preparation for firing of a newly installed or refurbished blast furnace, and a sleeper suspender used in the method.

[0002]

2. Description of the Related Art In a newly installed or renovated blast furnace, after drying, sleepers are piled from the furnace bottom to the tuyere level in preparation for firing, and coke is filled from above, and coke and ore are alternately filled from above. To be done. The sleepers are filled in order to improve the gas flow for the early heating of the bottom of the furnace and to prevent low-temperature coke having a large heat capacity from the falling slag.

[0003] Filling of the sleepers conventionally, throw in several to several ten units sleepers from the opening of the blast furnace tuyeres, while the long workers have been saved in a secure location in the furnace was thrown
The stomach sleepers will carry is piled up one step by one step from the blast furnace bottom to just below the tuyere regularly to a predetermined place in the human power "curb loading"
It was done by the method called.

[0004]

The above-mentioned conventional method of stacking sleepers requires a lot of workers and time. An object of the present invention is to provide a method by which the above-mentioned sleeper filling work can be efficiently performed in a short time by a small number of people, and a sleeper hanging tool used in the method.

[0005]

The invention according to claim 1 is newly established,
Alternatively, it is a method of filling sleepers that is carried out in preparation for the burning of a modified blast furnace, where wires such as chain blocks and hoists at the lower end, ropes, and ropes such as chains are attached from the furnace top or its vicinity. Let it hang. Then, a wire such as a wire, rope or chain other than the above-mentioned rope is hung on the lifting hook of the hoisting device, and the hanging jig attached to the end of the rope is detachably attached to the sleeper. After that, the hoisting device is operated to hoist the sleeper, and the guide wire such as the guide wire, rope, or chain connected to the rope, the hoisting device, the hoisting hook, or any position of the hoisting jig is guided in the desired direction. The feature is that the sleepers that are pulled to and lifted up are carried to the required places.

According to the present invention, a sleeper can be filled in the furnace by a small number of workers by operating the hoisting device to suspend the sleeper and pull the guide rope in the required direction. The work can be performed lighter and more efficiently than in the past.

The invention according to claim 2 relates to a hanging jig used in the method according to claim 1, wherein the jig main body has a U-shaped cross section and is fitted to the sleeper from an end face or a side face.
An intermediate portion is pivotally supported by the main body and is rotatable around this pivot point, and has a claw portion which is engaged with a sleeper at one end and a lever which is connected to the rope at the other end. Is characterized by.

According to the present invention, when the jig body is fitted to the sleeper and lifted up, the lever, the other end of which is pulled up by the rope, pivots and the claw portion at one end bites into the sleeper and is fixed. As a result, the sleeper can be carried without being twisted or displaced even if it is lifted in an inclined state.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an apparatus used in the method of the present invention for stacking sleepers on the bottom of a furnace for preparing for burning after drying a newly installed or refurbished blast furnace will be described below with reference to the drawings. In the blast furnace 1 shown in FIG. 1, a wire rope 3 as a cord is hung from a manhole near the furnace top, for example, left and right ignition manholes 2. An electric hoist 5 as a hoisting device is attached to the lower end of each wire rope 3, and the electric hoist 5 is positioned a few meters above the tuyere 4 level.

A hanging hook 6 which is suspended from an electric hoist 5 and which is lifted and lowered by the operation of a controller (not shown) can be lowered to the furnace bottom. A guide rope 7 serving as a guide rope is connected to the hook 6 to guide the rope. The hook 6 can be moved in any direction by towing.

As shown in FIG. 2, the wire rope 8 of the rope for hooking the intermediate portion on the hook 6 has the hanging jigs 9 attached to both ends. This hanging jig 9 is, as shown in FIG.
The jig main body 11 having a U-shaped cross section, and the intermediate portion is pivotally supported by the jig main body 11 so that the jig main body 11 can swivel around the pivot point 16.
The one end has a claw portion 14 that is hooked on the sleeper 13 through the slit 12 formed in the jig body 11, and the other end includes a lever 15 connected to the wire rope 8. When the wire rope 8 is pulled up in the fitted state, the lever 15 pivots clockwise from the position indicated by the alternate long and short dash line in FIG. 4, and the claw portion 14 bites into the sleeper 13 to fix the sleeper 13.

FIG. 3 shows another example of a hook on which the wire rope can be hung. At the end of the wire rope 17, a hanging ring 18 to be hung on the hook 19 is formed.
9 has a stopper 2 near the base to prevent the suspension ring 18 from coming off.
0 is mounted so that it can be opened and closed. This stopper 20
The suspension ring 18 is always closed by a spring (not shown) to prevent the suspension ring 18 from coming off, and when the suspension ring 18 is pushed in, the suspension ring 18 is pushed down against the action of the spring and opened.

Next, a method for filling the sleepers on the bottom of the blast furnace will be described. First, the worker inside the blast furnace is evacuated to a safe place, and then several to several tens of sleepers are thrown from the tuyere 4 to the bottom of the furnace. After throwing, the operator lowers the hanging hook 6 or 19 from the electric hoist 5 by operating the controller. Before and after the hook 6 or 19 is unloaded, the jig main bodies 11 of the hanging jigs 9 at both ends of the wire rope 8 are fitted and locked to the sleepers 13 thrown into the furnace at both ends thereof. Then guide rope 7
The the drag hanging of the intermediate portion of the suspension hook 6 or wire rope 17 ends for wire rope 8 wheels 18
Is hooked on the hook 19. After that, guide rope 7 with one hand
Grasp and operate the controller with another hand to raise the hook 6 or 19 and suspend the sleeper 13. Then, pull the guide rope to carry the sleepers to the desired location, and sleepers 1
Lower the direction of 3 toward the specified direction.

As described above, the sleepers are stacked and when the sleepers in the furnace are finished, a new sleeper is similarly thrown in a state where the worker is evacuated. After that, sleepers are stacked and filled in the furnace in the same manner.

In another method, as shown in FIG. 5, an overhanging deck 21 having a height reaching the tuyere is temporarily installed in the furnace, and a roller conveyor 22 is passed through the tuyere 4 and installed on the deck 21.
The sleepers are conveyed horizontally through the tuyere 4 by the roller conveyor 22 into the furnace, and the worker on the deck 21 fits and suspends the hanging jigs 9 on the respective side ends of the sleepers 13. Then, the controller 23 of the electric hoist 5 is operated to lift the sleeper 13 and lower it to the bottom of the furnace. During this time, another worker who is placed on the bottom of the furnace carries the sleeper 13 that is pulled down by pulling the guide rope 7 to a predetermined position, performs a guiding operation to stack the sleepers in a predetermined direction, and after stacking the sleepers, Remove the hanging jig 9. After that, the same work is repeated.

[0016]

According to the invention of claim 1, even a small number of workers can fill the sleepers in the furnace by operating the hoisting device while pulling the guide rope. Since it is not necessary to carry the sleepers, the labor of the work of filling the sleepers is reduced, and the effects of filling the sleepers efficiently in a short time can be achieved.

According to the hoisting jig of the invention of claim 2, when the sleeper is lifted, the claw portion of the lever comes to bite into the sleeper, so that the sleeper is firmly fixed and is reliably transported without slipping during transportation. can do.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a blast furnace in which an electric hoist is suspended from the furnace top.

FIG. 2 is a diagram showing a state where the sleepers are lifted by an electric hoist.

FIG. 3 is a view showing another mode of the hook on which the suspension ring at the end of the wire rope is hung.

FIG. 4 is a sectional view of a hanging jig.

FIG. 5 is a perspective view of an apparatus used in another method of filling sleepers.

[Explanation of symbols]

1. Blast furnace 2. Ignition manhole 3, 8, 17 ... Wire rope 4 ... 5. Electric hoist 6, 19, ... Hooks 7 ... Guide rope 9 ... Hanging jig 12 ... Slit 13 ... Sleepers 14 ... Claws 15 ... Lever 16 ... Support point 18 ... 21 ... Overhang deck 22 .. Roller conveyor 23 ... Controller

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shigeru Otani             11-1 Showa-cho, Kure-shi, Hiroshima Nisshin Steel Co., Ltd.             Company Kure Steel Works (72) Inventor Kenichi Fujinaga             2-14-22-301 Nakai, Kokurakita-ku, Kitakyushu (72) Inventor Yasunobu Hoshino             568-80 Narahara, Kurose Town, Kamo District, Hiroshima Prefecture (72) Inventor Kunio Mukai             10-15-34 Hatami, Onto-cho, Aki-gun, Hiroshima Prefecture F term (reference) 3F004 AA06 AB11 AD01 EA40 LA07

Claims (2)

[Claims] Claims: 1. A method of filling a sleeper, which is carried out in preparation for the burning of a newly installed or modified blast furnace, in which a rope such as a wire, rope or chain is hung from the furnace top or in the vicinity thereof and the lower end thereof is suspended. Attach a hoisting device such as a chain block or hoist, and attach / detach the hanging jig attached to the end of the rope, such as a wire, rope, chain, etc., other than the above-mentioned rope hooked on the hoisting hook of the hoisting device After attaching as much as possible, operate the hoisting device to hang the sleepers,
Characterized by carrying the above sleepers by pulling a guide wire such as a guide wire, rope, chain, etc. connected to an arbitrary position of a hoisting device, a lifting hook or a hanging jig in a desired direction to the desired position. A method of filling sleepers into the blast furnace. 2. A hanger used in the filling method according to claim 1, wherein a jig main body having a U-shaped cross section fitted to the sleeper from an end surface or a side surface, and an intermediate portion pivotally supported by the main body. A suspender which is rotatable about a pivot point, has a claw portion which is engaged with a sleeper at one end, and is a lever which is connected to a rope at the other end.