JPH0940369A - Automatic conveyer device in scrap yard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the transferring amount and the service frequency of conveyer crains, by receiving scraps from hoppers, and providing charge buckets. SOLUTION: Charge buckets 89 and 91 are loaded on carriages respectively, and move on two systems of tracks separately. When scraps are expelled from scrap yards by conveyer crains, after the charge buckets 89 and 91 are filled with the scraps carried in directly from trucks, or expelled from scrap yards 92, 93, 95, 97, 99, and 101, by conveyer crains 103, 105, 107, 109, 111, and 113, the remaining scraps not loaded are thrown in to mixing hoppers 81 to 87 once, and they are stored until the next empty charge buckets 89 and 91 come back.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scrapyard automatic carrier.

[0002]

2. Description of the Related Art The method of loading (accepting from the outside) and unloading (delivering to an electric furnace) scraps to a scrap yard used in steel mills, etc. Once into the scrap yard,
Store in piles for each grade.

When the scraps are to be discharged from the scrap yard and supplied to an electric furnace or the like, an operator suctions and hoists a required amount of scraps piled up according to product types and grades with a lifting magnet-equipped scrap transfer crane, and transfers the scraps for discharge. It is loaded in the scrap charge bucket mounted on the trolley. The scrap delivery carrier moves to the electric furnace and loads the scrap in the charge bucket into the furnace.

Further, the type (variety, grade) and quantity of scrap loaded by trucks arriving from the city are not predetermined, and the loading into the electric furnace and the dispensing work from the scrap yard are also irregular, and In order to discharge a plurality of types of scraps at one time, the receiving work and the discharging work of the scrap yard by the transfer crane have been separately and independently performed by the operator.

[0005]

In such a scrap loading / unloading / loading / unloading method, all scraps loaded by truck are piled up in the scrap yard once by using the scrap transport crane, and then the required amount of crane is re-loaded. It is necessary to hang it up and put it in the charge bucket.

For this reason, the carrier crane in the scrap yard is inevitably required to carry in and carry out the same amount of scrap as carried in by a truck, and the scrap carrier crane has a high operating rate and a large amount of carrier work. Was there.

Further, when the receiving side scrapyard and the discharging side scrapyard to the electric furnace are different, sideways holding work for moving scrap from the former to the latter occurs, and the area of the scrapyard becomes extra. It is necessary and a transport crane is required for each scrap yard.

Therefore, it is an object of the present invention to reduce the work load of the transfer crane in the scrap yard and to reduce the size of the transfer crane equipment.

[0009]

The above object of the present invention is achieved by directly disposing scraps, which are received from trucks, without storing a part of the scraps into a scrap yard. In this case, the scrap is transferred from the truck directly to the charge bucket, or is transferred to the charge bucket via the hopper.

Further, the receiving crane and the transporting crane do not operate in synchronization with the operation of the charge bucket,
When necessary, the scrap is temporarily stored in the compounding hopper to facilitate the operation of both parties.

[0011]

In the present invention, a part of the scrap carried in by the truck is directly transferred to the charge bucket side without being carried into the scrap yard, so the duty of the transfer crane in the yard is reduced accordingly. is there.

Further, even if the receiving crane and the transporting crane are not operated in synchronization with the operation of the charge bucket, the scrap is temporarily stored in the compounding hopper, so that the operations of both can be made smooth. .

[0013]

FIG. 1 is a block diagram showing an embodiment of the present invention.
Truck berths 5, 7, 9, 1 in truck yards 1, 3
1 has scraps 17 by trucks 13 and 15 from the city,
19 is brought in irregularly. Each track 13, 15
In addition to the type, grade and approximate load weight of the scrap of the load that is weighed by the weighing machine 23 at the inlet 21,
ID data, weighing data, etc. of the tracks 13 and 15 are created and transmitted to the computer controller 25. Normally, each truck is loaded with one type and one grade of scrap per vehicle, but rarely, two or more grades of scrap are loaded.

The computer control unit 25 determines the destination berths of the trucks 13 and 15 based on the input data, the transportation schedule, the equipment operating condition, the availability of the truck berths 5 to 11, and corresponds to the truck guidance display panel 27. View the destination berth of the track you want.

These scraps 17 and 19 are scrap receiving cranes 51 and 5 with lifting magnets provided on the truck berths 5 to 11, respectively.
3, 55, 57 transports from the trucks 13, 15 to the receiving-only scrap buckets 59, 61, 63, 65 by type.

A part of the scraps 17 and 19, for example, 30% of the total amount received is a scrap bucket 59 for exclusive use of reception.
61, 63, 65 without being transferred to the mixing hopper 81, 83, 85, 87 or charge bucket 8
Transferred to 9, 91. Receiving cranes 51, 53, 5
5,57 and receiving scrap buckets 59,6
Reference numerals 1, 63, and 65 each include a load cell for loading control, and measure the load of scrap carried. The charge buckets 89 and 91 are respectively mounted on a dolly and can move separately on two systems of tracks.

A plurality of scrap yards 92, 93, 95, 97, 99, 101 adjacent to the truck yards 1, 3
Is arranged. Each scrapyard 92-10
1 is a scrap transportation crane 103, 105, 107, 109, 111, 11 with a lifting magnet.
3 are installed, and the receiving exclusive buckets 115 and 11 are respectively provided.
7, 119, 121, 123, 125, 127, 12
Scrap 1 from 9, 131, 133, 135, 137
7 and 19 are loaded and unloaded and moved to the scrap yards 92 to 101, and scraps 17A, 17B, 17C are sorted by type.
Store as 19A, 19B, 19C, etc.

A plurality of types of scraps are stored in one yard by type and grade. When there is a demand for delivery to the electric furnace, a transfer crane with a lifting magnet 10
3, 105, 107, 109, 111, 113 lift the scraps 17, 19 again from the scrap yards 92, 93, 95, 97, 99, 101, charge buckets 89, 91 or compounding hoppers 141, 143,
Transfer to 145, 147, 149, 151.

These compounding hoppers act as scrap buffers. That is, the receiving cranes 51 to 51
57 and the transfer crane 103, the charge bucket 89,
Even if the operation is not performed in synchronization with the operation of 91, the scrap is temporarily stored in the compounding hopper to facilitate the operation of both.

For example, the charge buckets 89 and 91 are
Scrap directly loaded from the truck or scrap yard 92, 93, 95, 97, 99, 1 by the transport cranes 103, 105, 107, 109, 111, 113.
When the scrap is discharged from 01 and then discharged from the scrap yard by the transport crane, the scrap left over is once loaded into the compounding hopper and stored until the next empty charge bucket. To be done.

When mixing scraps of two or more types and grades, the scraps are put into a hopper, respectively, and after being mixed, put into a charge bucket. If you do not have this compound hopper,
Unless the cranes and the charge bucket are operated in synchronization, the waiting time of each crane is long and the operation efficiency of each device is reduced.

Dedicated receiving buckets 59-65, 115-1
As shown in FIG. 2, 37 is mounted on a child receiving carriage 161. Further, this child receiving carriage 161 is mounted on a parent receiving carriage 163. Parent trolley 163 is scrap yard 9
It is possible to move in orbit along 2 to 101 respectively,
The child carriage 161 can move and move up and down on the parent carriage 163, and the movement directions thereof are orthogonal to each other.

As shown in FIG. 1, parent receiving carts 163, 16
5 moves along the direction in which the scrap yards 92 to 101 are arranged, stops at the position of the scrap yard that accommodates the scrap of the desired quality, and receives by the lift-up and lift-down mechanism provided in the child receiving cart 161. Remove the dedicated bucket and store it in the scrap yard.

The charge buckets 89 and 91 loaded with scraps to be charged into the electric furnace move along the arrangement direction of the scrap yard and charge the scraps into the electric furnace.

The mixing hoppers 81 to 87 arranged along the arrangement direction of the scrap yard carry the loading truck 13,
While some of the scraps are directly fed from 15, the scraps 17 and 19 stored in the scrap yards 92 to 101 are also fed to the compounding hoppers 141 to 151 by the transfer cranes 103 to 113, and as required. Be compounded.

The mixed scraps are put into charge buckets 89 and 91, moved by carriages 167 and 169, and then put into an electric furnace (electric furnace). The total weight of the scrap loaded in the charge bucket is measured again by the weight measuring device before being put into the electric furnace.

As shown in FIG. 3, the charge bucket 89,
91, or all compounding hoppers 81-87, 141-
The 151 is provided with a load cell 170 for measuring the weight of scrap transferred and input by a crane from the scrap yard or the trucks 13 and 15, and the scrap weight data is transmitted to the computer control device 251. Further, the computer control device 251 is provided with a memory 171 in which the types and amounts of the scraps 17, 19 and the loading order for each type of scrap are registered.

The lifting magnets provided in the scrap receiving crane and the scrap transporting crane are controlled by suction and release by the computer control devices 251 and 253. This scrap conveyor crane also measures the lifting scrap load and computer controller 2
Crane load cell 1 that outputs scrap load to 53
75 is attached.

The control of the carry amount of the scrap carrying crane is performed by controlling the crane controller 255 according to the input scrap weight data of the load cells 170 and 175 and the scrap loading data set in the memory 171.

In the above configuration, the memory 1
71, the types of scraps, the amount of scraps,
It is assumed that the input order is set for each scrap type.

Scrap weight loading sequence 17A X1 ∨ 17B X2 ∨ 17C X3 19A X4 The computer control device 251 reads the scrap loading data in the memory 171, and weights X1, X2, X3, and X4 for each predetermined type and grade of scrap. In addition to controlling the number of times of transportation of the scrap transportation crane corresponding to, the crane controller 255 outputs a predetermined exciting current at the time of the final transportation to control the amount of suction of scrap.

At this time, it is confirmed whether or not direct delivery is possible based on the quality and type of the loaded scrap of the arrival truck input to the computer control device 251, and if yes, the display device is used to give priority to the availability. Guide to the truck berth.

When the scrap is loaded into the charge basket, the transport amount of the scrap transport crane is controlled based on the scrap weight data of the load cell 170 provided in the truck or the compound hopper for each grade A-D.
Check the actual scrap put in the scrap bucket with high accuracy.

Here, the load cell 170 measures the total amount of scrap that has been input. For example, in the first step, the scrap 17A is loaded into the scrap bucket until the weight X1 is reached, and in the next step, the scrap 17A is loaded.
C is input until the data in the load cell 170 becomes X1 + X3, and the following steps are similarly performed. For the crane load cell 175, in addition to confirmation of scrap weight,
It is used for landing and lifting detection of lifting magnets.

The transfer control of the scrap transfer crane is patterned according to the grade of scrap and the required lifting amount (suction amount). It is possible to check and correct the pattern by checking the exciting current of the lifting magnet and the weight of the scrap loaded into the scrap bucket (weight per operation) for each grade of scrap during the actual operation. The data of the memory 171 can be set in advance by setting a plurality of patterns, and an appropriate pattern can be set at the work instruction point or can be input by the key each time.

[0036]

As described above, according to the present invention, the scrap carried in by the truck is transferred to the receiving bucket by the transfer crane and a part of the scrap is directly transferred to the charge bucket without being stored in the scrap yard. Therefore, it is not necessary to transfer all the received scraps to the scrap yard by the transfer crane, and it is not necessary to transfer all the scraps to the charge bucket. As a result, the transfer amount and operating frequency of the transfer crane are reduced, and the equipment can be downsized.

Further, even if the receiving crane and the transporting crane are not operated in synchronization with the operation of the charge bucket, the scrap is temporarily stored in the compounding hopper, so that the operations of both can be made smooth. .

[Brief description of drawings]

FIG. 1 is a configuration diagram showing one embodiment of the present invention.

FIG. 2 is a front view (A) and a side view (B) for explaining the structure of the scrap receiving cart of FIG.

FIG. 3 is a block diagram illustrating the operation of the embodiment of the present invention shown in FIG.

[Explanation of symbols]

13 ... Truck, 15 ... Truck, 59-65 ... Receipt-only scrap bucket, 81-87 ... Mixing hopper, 8
9 ... Charge bucket, 91 ... Charge bucket, 10
3-109 ... Scrap transport crane.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yoshinobu Mataga 3-29-1, Nitta, Adachi-ku, Tokyo (72) Inventor Kunihiro Shindo 1029 Shingu, Shingu-cho, Ibo-gun, Hyogo Prefecture Inventor Koji Tagashira Saitama Prefecture 5-6-305 Midori-cho, Kawaguchi City (72) Inventor Katsuya Suzuki 1019-280, Koda-cho, Sakae-ku, Yokohama-shi, Kanagawa Prefecture (72) Shinichi Kuroiwa 2878-127, Naze-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture

Claims (3)

[Claims] 1. A scrap yard for storing a plurality of types and grades of scrap by type, a plurality of berths for receiving a truck for loading the scrap, and a trolley for receiving to move and store the scrap delivered by the truck. Then, a dedicated container for receiving by type into the scrap yard, a hopper for temporarily storing discharged scrap, a transfer crane for transferring the discharged scrap from the scrap yard to the hopper, a scrap receiving from the hopper for discharging In a scrap yard equipped with a charge bucket that moves by a trolley and conveys discharged scrap to an electric furnace, and a scrap receiving crane that selectively transfers the introduced scrap from the truck to one of the receiving container and the hopper. Automatic transport device. 2. A scrap yard for storing scraps of a plurality of types and grades by type, a plurality of berths for receiving trucks for loading the scraps, and a trolley for receiving to move and store the scraps loaded by the trucks. Then, a dedicated container for receiving by type into the scrap yard, a hopper for temporarily storing discharged scrap, a transfer crane for transferring the discharged scrap from the scrap yard to the hopper, a scrap receiving from the hopper for discharging An automatic scrap yard equipped with a charge bucket that moves by a trolley to convey discharged scrap to an electric furnace, and a scrap receiving crane that selectively transfers the introduced scrap from the truck to the receiving container, hopper, and charge bucket. Transport equipment Place. 3. A device for measuring the load of the truck is provided at the entrance, and a device for displaying the destination berth is provided according to scrap type, grade, weight, and availability information of the truck berth. Scrap yard automatic transfer device described in 2.