JPS62164812A - Chute loading yard for converter steel making - Google Patents

Abstract

PURPOSE:To efficiently charge raw materials to a converter according to the operating conditions of the converter by providing preparation beds to a scrap throwing position, disposing intermediate receiving machines which can be freely moved into and out of the plural points of the preparation beds and combining the same with the direct throwing of scrap. CONSTITUTION:Throwing beds E1-E4 for throwing the scrap are formed in a chute pack loading yard A. The throwing preparation beds 1-1-1-4 are provided to the front ends of the respective scrap throwing beds E1-E4. Plural units of the intermediate receiving machines are moved into and out of the respective beds 1-1-1-4 to receive the scrap carried therein and to unload the scrap onto the beds 1-1-1-4. Direct throwing points 6-1-6-4 are preliminarily provided to the beds 1-1-1-4 to make the direct throwing of the scrap in parallel with the throwing by the machines 2 when the charging conditions in converter steel making are permitted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to chute stuffing yard equipment for charging scrap into a chute bag for charging a converter.

(Prior art) One method of stuffing into a chute bag when charging scrap into a converter is to directly feed scrap from a transportation vehicle such as a Gumptrafuku or a road lugger into a chute bag placed on a moving trolley. There is a method in which, after adjusting the weight, it is transported to the converter building, and from there it is charged into the converter using an overhead lane.

In particular, in order to make this method compatible with converter operation, +11 Scrap type mixing standards for matching with converter molten steel components, (2) Size and unit weight standards based on converter melting capacity, (3) Converter Packing time suitable for furnace steel pinch,
(4) The order in which the chute is packed to protect the furnace body and prevent the contents from slipping when charging the converter; (5) the efficiency of the chute back and the unit input amount due to the structure of the 9-cart weighing machine; It is necessary to do so.

In the case of lightweight scrap, this direct charging method is efficient because the scrap is directly charged from the charging bed into a chute bag and then charged into the converter in that state. However, in the case of heavy scrap, in order to prevent accidents due to errors in loading into the chute bag, it is necessary to perform a two-step process of lowering it onto the floor and then loading it into the chute bag using a crane, which is inefficient. It is.

For this reason, the amount and brand of scrap brought into the yard by transport vehicles cannot match the above-mentioned charging conditions to the converter, resulting in an excess or shortage of specific brands of scrap, and the amount of scrap to be unloaded onto flat land is reduced. The number of shootbacks may increase, or the number of shootbacks may become vacant, resulting in a situation where the number of shootbacks becomes vacant, which is an impediment to improving work efficiency.

The applicant of this application previously published Japanese Patent Publication Nos. 41-19483 and 47-1983 in order to streamline the work using this method.
Although an improvement measure has been provided in Japanese Patent No. 44850, the problem of the lag between the timing of transporting scrap to the stuffing yard and the timing of inputting it into the chute bag still remains.

[Problems to be Solved by the Invention] The problems to be solved by the present invention are: (1) In the chute bag packing method in which scrap is directly inputted by a dump truck, (1) the efficiency amplifier of direct input of scrap by a transport vehicle; ) Reducing the packing work load using an overhead crane, (
3) Solve the problem associated with the timing difference between carrying the scrap to the packing yard and charging it into the chute bag for charging into the converter, thereby improving the overall efficiency of charging raw materials during wet work in the converter. It's about forcing.

[Means for solving problems]

The present invention provides a floor frame at the chute loading position of a chute stuffing yard where multiple intermediate scrap receivers from scrap transportation vehicles can enter and exit, so that scrap pallets can be temporarily stored, and the chute back Even if a scrap transport vehicle arrives when the scrap pallet is not available, the scrap pallet is temporarily stored in the intermediate receiving machine, and the transport vehicle is then transferred to the next receiving machine. The intermediate receiver allows scrap to be charged into the chute back, making it possible to constantly and efficiently respond to changes in the conditions for charging scrap to the converter.

In other words, in response to the above issues, (a) Scrap that can be directly loaded is not limited to lightweight items with small bulk specific gravity; Since the work floor can be used over a wide range, there are no restrictions on the loading position from the transport vehicle; (c) This solution was achieved by arranging multiple intermediate receivers, which increases the degree of freedom in driving the scrap transport vehicle and improves overall efficiency.

EMBODIMENT OF THE INVENTION Hereinafter, a specific explanation will be given based on a drawing showing an example of a chute bag stuffing yard of the present invention.

In the figure, A indicates the chute bag filling yard located perpendicular to the converter building C where the converter B is located. Feeding floor E1 for dropping scrap. E2. E3. l! 4 is formed, and an exit path F for the same trunk is provided at the other end of the inlet path. Immediately below the tip of each of the above-mentioned charging beds, there is a rail I11. R2, R3, R
4 was laid, and on these rails were old trolleys with chute bags placed on them, +12. H3 and H4 are provided.

The present invention provides each scrap input floor [! 1. E2. E3. Loading preparation floors L-1, 1-2, 1-3, and L-4 are provided at the tip of E4, and each loading preparation floor 1 receives scrap or scrap pallets from the transport vehicle at the unloading position from the scrap transport vehicle.
-1.1-2.1-3.1-4 It is possible to arrange a plurality of intermediate receiving machines 2 that enter and exit.

The intermediate receiver 2 may be of a self-propelled type that once receives scrap from a dump trailer, but it is preferable to use a scrap pallet mounted on a road lugger, which has become widely used in recent years. More efficient. In this case, each loading preparation floor 1-1.1-2.1-3
．． A plurality of scrap pallet stands are installed in parallel on 1-4, and a load lugger is mounted on this stand. 3! It is preferable to be able to unload the brought in scrap pallets, and as the intermediate receiving machine 2, it is possible to use an auto-piloted self-propelled vehicle equipped with a mechanism for supporting and tilting the scrap pallet at the tip. .

3 is a buried taxiway for a self-propelled intermediate receiver,
The scrap unloading position on the passage 4 of the scrap transport vehicle is connected to each loading preparation floor 1-1.1-2.1-3°1-4.

5 is the waiting area for intermediate receiving [2], where the intermediate receiving machine that receives scrap is received when there is room in the intermediate receiving machine or when the loading platform for a particular brand is full. It is used as a waiting area when there is no room for loading.

Each preparation floor is also provided with a direct loading point 6-1.6-2.6-3.6-4 for loading scrap directly into the chute bag from a transport vehicle such as a dump trunk.

Therefore, even if the intermediate receiver 2 is provided, if the conditions for scrap charging in the converter steel manufacturing are permissible, the scrap brought in by the transport vehicle can be directly charged in parallel to the direct input by the intermediate receiver 2. This makes it possible to improve the feeding efficiency and to make finer adjustments to the mix of scrap brands to be fed.

7 is a plurality of such self-propelled intermediate scrap receivers 2 arranged on feeding floors El, E2. E3. This is a control room that transports the raw material to E4 and controls the charging from each charging preparation floor 1-1.1-2.1-3.1-4 to the chute back according to the converter's raw material charging program.

When controlling the movement of intermediate receivers and the input of scrap,
By providing a loading preparation floor, it is possible to allow sufficient time for the intermediate receiver 2 to enter and leave the loading preparation floor, and the converter is not affected by an insufficient amount of scrap brought in by a scrap transport vehicle. It is possible to set a program that can respond to the operating conditions with plenty of margin.

In addition, when a specific brand of scrap is required, scrap from a specific intermediate receiver can be fed into the shootback with priority, regardless of the arrival order of the intermediate receivers, so the operating conditions of the converter can be adjusted. Able to respond quickly to changes.

Further, even after the completion of the first stage of the loading operation, it is possible to carry in the scrap by transport vehicle at any time, increasing the degree of freedom in the scrap loading operation.

〔Effect of the invention〕

The chute stuffing yard according to the present invention is not affected by the loading state of the scrap transport vehicle, can immediately respond to changes in converter operating conditions, and can greatly contribute to improving the efficiency of the entire converter operation.

[Brief explanation of drawings]

The attached drawing shows one embodiment of the scrap filling yard of the present invention. A Chute pack filling yard B Converter C Converter building D Scrap transport vehicle introduction path E Scrap input floor F Scrap transport vehicle exit path G Overhead lane Cart with R rail H chute bag loaded 1 Loading preparation floor 2 Intermediate receiving Aircraft 3 Taxiway
4 Transport vehicle passage 5 Waiting area
6 Direct input point 7 Control room

Claims (1)

[Scope of Claims] 1. A transfer system in which scrap from a transport vehicle is directly thrown into a charging chute bag placed on a truck on a rail leading to the running position of the overhead charging lane of a converter building. In the chute bag filling yard for scrap for furnace charging, a preparation floor is installed at each scrap loading position into the chute bag, and intermediate receivers are placed that can freely move in and out of multiple locations within each preparation floor from the unloading position from the transport vehicle. A chute stuffing yard for converter steelmaking, which is characterized by: