JP2922022B2 - Apparatus for treating falling objects under the converter furnace - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for scraping and processing slag, metal, and the like dropped under a converter furnace.

[0002]

2. Description of the Related Art In a converter operation, slag and ingot adhere to a furnace opening, a dust collecting hood, and the like due to slopping and the like (hereinafter referred to as "adhered matter"). When this amount is accumulated above a certain level, it falls on the road surface under the converter furnace by its own weight (hereinafter referred to as a falling object). The size of this falling object is 100mm x 100mm x 100m
They range from m-th to 500 mm x 500 mm x 200 mm. It is necessary to remove falling objects because molten steel pot trucks and slag pot trucks enter under the converter furnace.

[0003] The tapping of the converter is carried out approximately every 30 minutes, but the work of removing the fallen objects cannot be carried out during tapping and slagging work, so the restricted time during the downtime after the completion of the work (about 10 minutes). 10
Minutes). This method uses a general-purpose bulldozer or the like to collect the fallen objects on the road surface under the furnace in one place, load them on a truck, and process them.

[0004] At this time, the road surface around the bottom of the furnace is extremely uneven, so that the working efficiency of a caterpillar type bulldozer is extremely low, and the work environment is extremely bad due to high heat and a lot of dust. It was dangerous because the operation was performed under a converter furnace that was unknown.

[0005]

Since the work for treating the fallen object is a dangerous environment in which the attached matter may drop at any time, the work under the furnace is installed by remote control. An object of the present invention is to remove falling objects under a furnace safely and efficiently, and to release a worker from a terrible furnace working environment of high heat and large amount of dust.

[0006]

In order to achieve the above-mentioned object, the present invention comprises a scraper which runs on a rail laid under a furnace of a converter and scrapes slag, metal, etc. which have fallen on a road surface under the furnace. In the furnace working truck , the scraper is connected to the rail.
The vertical drive that adjusts the distance between the
This is a device for treating a falling object below a converter furnace.

[0007]

The undercarriage equipped with a scraper runs on a rail, so that even if there is a significant unevenness on the bottom surface of the furnace, falling objects can be raked up without being affected by the irregularities. This is
Because the craper is connected to the vertical drive,
Adjust the height between the rail and the road surface to an arbitrary height by operating the drive unit.
This is because it can be adjusted. In addition, the scraper between the rail and the outer wall scraped the fallen object between the rail and the outer wall between the rails. Since it is scraped off to a portable basket, it can be processed efficiently.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus according to the present invention for treating a falling object that has fallen on a road surface under a converter furnace will be described with reference to the drawings. 1 to 4 are explanatory views of the apparatus according to the embodiment of the present invention.

[0009] A furnace work truck 3 is provided for running on a rail 2 for a steel ladle trolley laid under the furnace of the converter 1, and the scraper 4 for the rail and the rail-to-outer wall 12 are provided on the work truck 3 under the furnace. A scraper 5 is provided.

[0010] The rail scraper 4 is a vertical drive device 6.
The mechanism operates vertically. In this mechanism, as shown in FIG.
, And the tip of the arm 9 is joined to the scraper. Roller 1 is attached to scraper 4
0 is attached, which is engaged with the guide 11. Therefore, the scraper moves up and down by moving the rod of the cylinder in and out, and by stopping the cylinder 7 at an arbitrary position, the distance between the road surface under the furnace and the scraper can be adjusted arbitrarily. What is necessary is just to set the height of this scraper according to the accumulation amount of a falling object.

The rail-to-outer-wall scraper 5 has a mechanism that can be rotated by a rotation driving device. In this mechanism, a rod 14 of a cylinder 13 is pin-joined to an arm 15 as shown in FIG.
Around the center. A scraper 5 is attached to the arm. Therefore, the angle of the scraper can be arbitrarily adjusted by rotating the scraper by moving the rod in and out of the cylinder and stopping the cylinder at an arbitrary position. The angle of the scraper may be set so that no falling object remains on the outer wall.

The scrapers 4 and 5 have a liner 4-
1, 5-1 are detachably attached. Further, the shape of the scraper may be inclined so that the lower end of the scraper protrudes in the scraping direction so as to easily scrape the falling object.

When the scraper 5 is set at an appropriate position and the under-furnace work vehicle 3 is run, the fallen object between the rail and the outer wall is collected between the rails 2 by the rail-to-outer wall scraper 5. The falling object can be raked up by the rail scraper 4. When the under-furnace work cart 3 is moved to the portable bucket 17 in this state, the falling objects are scraped into the portable bucket. At this time, a small amount of fallen object remains between the rail and the outer wall. In order to put the fallen object in the portable bucket, the scraper for the rail and the outer wall may be rotated to the position shown by the imaginary line in FIG.

The portable bucket 17 is provided in the pit 19 between the rails 2 and lower than the road surface 18.
A guide 20 is provided around the portable bucket 17 so as to prevent the dropped object from spilling between the pit 19 and the portable bucket 17 when scraping the dropped object. As shown in FIG. 7, the structure of this guide is a mechanism that can be rotated by a rotation driving device. Usually, it is set at the position shown in FIG. When processing the fallen objects in the portable bucket, they are transferred to a dump truck (not shown) or the like by an overhead crane (not shown) and transported to a disposal place. When lifting a portable bucket, the rod 22 of the cylinder 21
And move it to a position where the guide and the portable bucket do not interfere with each other.

In the present embodiment, the slag pot truck 2 is attached to the furnace work truck 3.
The rails 24 are provided at the same level and pitch as the rails (not shown) of the slag pan truck on the ground so that 3 can be loaded. In addition, since the rail 2 of the molten steel ladle truck (not shown) on which the lower working vehicle 3 travels is also installed at the same level, the cross-sectional shape in a direction perpendicular to the traveling direction of the lower working vehicle 3 is shown in FIG. Thus, the pits 25 are formed between the rails for the molten steel ladle truck.

Next, a method for treating falling objects during the operation of a converter using the apparatus of the present invention will be described.

When the molten steel pot truck (not shown) comes under the converter furnace, the furnace working truck is parked at the standby position. At this standby position, the rail of the slag pot truck 23 on the ground and the rail 24 provided on the furnace working truck are connected. An empty slag pan truck is loaded on the bottom bogie while the converter is tapping and the bottom bogie is on standby.

Thereafter, the tow truck of the slag pot truck separates from the slag pot truck and moves.

After the tapping has been completed and the molten steel ladle truck has been moved from under the converter furnace, the under work furnace 3 travels toward the slag receiving position under the converter furnace.

The falling objects are raked up by the operation of the lower work cart, and the falling objects enter the portable bucket 17 when the slag pan moves to the slag receiving position. At this time, the rail-outside-wall scraper is rotated in order to put the fallen object remaining between the rail 2 and the outer wall 12 into the portable bucket.

By loading the slag pan truck 23 on the furnace bottom truck 3, the wheel weight of the furnace bottom truck increases, and the wheels 26
As a result, the traveling driving force can be transmitted as the ability to scrape falling objects.

Also, falling objects can be processed only by moving the slag pan truck to the slag receiving position. In other words, it is possible to automatically perform the scraping work without renewing the work of collecting the falling objects.

The traveling device 27 and the scrapers 4 and 5 are remotely operated from the control room of the converter.

In addition to the above-described embodiment, a dedicated under-floor work cart that does not carry a slag pot truck may be provided, or a scraper may be provided on the slag pot truck or the molten steel pot truck.

[0025]

According to the present invention having the above-mentioned construction, the work for removing falling objects under the converter furnace can be performed safely and efficiently, and the worker can be removed from an extremely bad working environment of high heat and large amount of dust. Can be opened.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of the present invention.

FIG. 2 is a plan view showing one embodiment of the present invention (AA in FIG. 1);
Arrow view).

FIG. 3 is a view taken in the direction of arrows BB in FIG. 1;

FIG. 4 is a view taken in the direction of arrows CC in FIG. 1;

FIG. 5 is a schematic view of a vertical driving device of the rail-to-rail scraper.

FIG. 6 is a schematic view (plan view) of a rotation driving device of the rail-outer wall scraper.

FIG. 7 is a schematic diagram of a rotation drive device of a guide for preventing a spilled load.

[Explanation of symbols]

1: converter 2: rail for molten steel ladle truck 3: undercarriage work truck 4: scraper for between rails 5: scraper for between rail outer walls 6: vertical drive 7: cylinder 8: rod 9: arm 10: roller 11: guide 12: Outer wall 13: Cylinder 14: Arm 16: Shaft 17: Portable bucket 18: Road surface 19: Pit 20: Guide 21: Cylinder 22: Rod 23: Slag pot truck 24: Rail 25: Pit 26: Wheel 27: Traveling device

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Satoshi Ogino 5-3 Tokai-cho, Tokai-shi, Nippon Steel Corporation Nagoya Works (56) References JP-A-47-38704 (JP, A) 56-18872 (JP, B2) 48-19203 (JP, Y1) (58) Fields investigated (Int. Cl. ⁶ , DB name) C21C 5/46 F27D 23/02

Claims (1)

(57) [Claims] 1. A furnace under work carriage with scratching scraper sediment or ingots or the like dropped laid down by rail in traveling and the furnace under the road surface under the furnace of the converter, the said scraper
Vertical drive for adjusting the distance between the rail and the scraper
An apparatus for treating falling objects under a converter furnace, wherein the apparatus is connected to a furnace.