KR100783080B1 - Slab alignment apparatus - Google Patents

Abstract

A slab alignment apparatus is provided to locate a slab on an accurate position for a pickup crane to grasp the slab when the slab is transferred by a tongs crane. A slab alignment apparatus(100) includes a skid(110), a guide roller(120), a detector(130), and a controller. The guide roller aligns a slab for scarfing in a width direction by physically contacting a width of the slab for scarfing when the slab for scarfing is landed on the skid. The detector detects a length of the slab for scarfing when the slab for scarfing is landed the skid. The controller controls an operation of a tongs crane. The tongs crane lands the slab for the scarfing by signals outputted from the detector.

Description

Slab aligning device {SLAB ALIGNMENT APPARATUS}

1 is a schematic view showing a conventional continuous casting process.

Figure 2 is a perspective view showing a slab alignment device according to the present invention.

3 is a plan view of the slab alignment device according to the present invention.

Figure 4 is a plan view showing another embodiment of a slab alignment device according to the present invention.

Figure 5 is a schematic diagram showing the transport process of the scarfing target slab according to the present invention.

<Description of Symbols for Main Parts of Drawing>

10: ladle turret 12: ladle

14 tundish 16 immersion nozzle

18: mold 20: slab

22: dummy bar head 24: dummy bar

26: torch cutting device 28: feed roller

30: scarfing target slab 40: transfer table

50: Collection 60: Scarf Charging Table

70: scarfing device 80a: tongs crane

80b: pickup crane 100: slab alignment device

110: skid 120, 120a: guide roller

122: bracket 130: detection unit

The present invention relates to a pickup table of the slab, and more particularly, the slab is cut to a predetermined length so that the stacked slab can be accurately grasped the slab while the stacked slab is transported from the pickup table to the scarfing charging table. It relates to a slab alignment device for aligning.

1 is a schematic view showing a conventional continuous casting process. Referring to the drawings, the ladle (12) provided in the ladle turret (Ladle Turret) (10) to fill the molten steel with the impurities removed and the chemical composition is adjusted to the ladle (12) It is supplied to the tundish 14 through the nozzle. Then, the molten steel stored in the tundish 14 is injected into the mold 18 through an immersion nozzle 16 made of a cylindrical refractory brick, and cast into a slab 20.

In the mold 18, a dummy bar 24, which guides the slab 20 out of the mold 18, flows into an open lower portion of the mold 18, and the first molten steel introduced into the mold 18 is a dummy bar. The uneven portion of the head 22 is solidified at the boundary. The solidified molten steel is continuously manufactured as the slab 20 while moving between the upper and lower rollers, which are pulled by the dummy bar 24 and driven by the coolant as the plurality of conveying rollers 28 installed on the trajectory are driven.

In the initial casting of molten steel, the slab 20 solidified by the dummy bar 24 is drawn out, but once the solidified slab 20 passes between the transfer rollers 28, the role of the dummy bar 24 is thereafter. It is not necessary. Accordingly, the dummy bar 24 is raised upward by a separating device (not shown), and the continuously cast slab 20 is cut to a predetermined length by a torch cutting machine (TCM) 26, and the predetermined length is cut. After the slab 20 having a length is placed on the transfer table 40 is installed a table roller.

When the slab 20 cut to a predetermined length is positioned on the transfer table 40 as described above, the tongs crane 80a is lifted in the state in which the cut slab 20 is gripped and transported to the collecting cabinet 50, The slab 20 arriving at the storage 50 is to stay for a certain time to naturally cool.

When the cut slab 20 accumulated in the collecting box 50 is completely cooled, the slab 30 having a bad surface may be sorted out of the slabs 30, and may be located in a separate collecting box (a storage area where the slab stays naturally cooled). And, it may be located at a distance) and then charged into the scarfing device 70 through the scarfing charging table 60 to process the slab surface. To this end, the scarfing target slab 30 accumulated in the storage box 50 is transported to the scarfing charging table 60 in the state in which the picking crane 80b is gripped, and charged into the scarfing device 70 to thereby cover the surface of the slab. Scarfing.

However, in the process of transporting the slab 30 to be scarfed to the transfer table 40, the collecting cabinet 50, and the scarfing charging table 60 as described above, the slant lands without being accurately landed by various factors. When transported to the next process, the scarfing target slab 30 is carried in an unstable state or transported in an eccentric state, causing the equipment accident in which the scarfing target slab 30 collides with other equipment.

For example, when the scaffolding target slab 30 is transported from the transfer table 40 to the collecting cabinet 50 and the tongs crane 80a is recommended, the scaffolding target slab 30 is shaken from side to side and pick-up crane ( If 80b) fails to land the scarfing slab 30 correctly at the set position for gripping, the pick-up crane will be carried when the scarfing slab 30 is transported from the loading dock 50 to the scarfing charging table 60. The scarfing charging table for holding the scarfing target slab 30 in an unstable state and allowing the scarfing target slab 30 to fall from the pick-up crane 80b or to be charged into the scarfing device 70 during transportation ( Since the slab 30 to be scarfed is not charged to the scarfing facility 70 because it is not landed at the correct position of 60), it prevents smooth operation.

The present invention is to solve the above problems, it is stable when the slab is transported to the scarfing loading table to induce the correct landing position of the slab to be scarfed when the slab to be transported from the transport table to the storage It is an object of the present invention to provide a slab alignment device that can be loaded smoothly.

According to the technical idea of the present invention for achieving the above object, a pair of guide rollers installed so as to maintain a gap of the slab to be scarfed on the skid, the width of the slab to be scarfed on the skid, and the skid It is achieved by the slab alignment device including a sensing unit for transmitting a signal by detecting the length of the scarfing target slab on the top, and a control unit for controlling the operation of the crane holding the scarfing target slab according to the signal transmitted from the detection unit do.

Here, it is preferable that the pair of guide rollers are provided at least two sets or more along the longitudinal direction of the skid.

In addition, it is preferable to further include a pair of guide rollers installed to maintain a gap as long as the length of the slab to be scarfed on the skid.

Hereinafter, embodiments according to the present invention will be described in more detail with reference to the accompanying drawings.

Figure 2 is a perspective view showing a slab alignment device according to the invention, Figure 3 is a plan view of the slab alignment device according to the invention. Referring to the drawings, the slab alignment device 100 is located in the holding area, when the skid 110 and the skid 110 is recommended to be landed on the skid 110, the slapping target slab ( 30) the length of the slapping target slab when the guide roller 120 which is in physical contact with the width to align the width direction of the scarfing slab 30, and the scarfing slab 30 is recommended to the skid 110 And a control unit (not shown) for controlling the operation of the tongs crane which recommends the scarfing target slab 30 according to the signal of the sensing unit 130 and the sensing unit 130.

The skid 110 is located in a storage area in which a slab 30 having a bad surface is selected and collected among slabs naturally cooled after being cut to a predetermined length, and the skid 110 is roughly a scarfing slab. The lower surface of the (30) has a shape of a plate having an area larger than the area and is located in the storage box of the exact coordinates (hereinafter referred to as the set position) for gripping the slab to be scarfed by the pickup crane.

The guide roller 120, in the width direction so that the scarfing slab 30 is rolled on the installation position when the scarfing slab 30 lands on the skid 110. The guide roller 120 is rotatably supported by each bracket 122 formed integrally with the skid 110, and the guide roller 120 is to be scarfed on the skid 110. In order to maintain the gap as wide as the slab 30 is installed on each side end corresponding to the width direction of the skid 110 to form a pair. In some cases, the pair of guide rollers 120 may be installed at least two sets along the longitudinal direction of the skid 110.

The sensing unit 130 is installed at both ends of the longitudinal direction of the skid 110, and the scarfing object when the scarfing target slab 30 is cut to a predetermined length by the torch cutting device is landed on the skid 110. The longitudinal twist of the slab 30 is detected and a signal corresponding thereto is transmitted to the controller.

In other words, the detection unit 130 has a transmissive sensor, such as an optical sensor composed of a light emitting unit and a light receiving unit, is installed at each of the front end and the proximal end (both sides of the skid length direction) of the skid 110 to be scarfed to the skid 110. The slab 30 is recommended to sense the situation when landing. In some cases, the sensing unit 130 may detect deformation of the slab, such as upward banding and downward banding, generated in the slab to be scarfed.

The control unit controls the operation of the tongs crane that recommends the scarfing target slab 30 according to the signal transmitted from the sensing unit 130 or the skiding target slab as the skid 110 to the driver of the tongs crane ( 30) is installed to warn of the recommended condition. In some cases, the control unit may further include a logic operation unit (PLC) for comparing / operating the signal transmitted from the sensing unit 130.

In addition, the guide roller 120, the skid 110 corresponding to the longitudinal direction of the skid 110 so as to maintain a gap as long as the length of the slab to be scarfed on the skid 110, as shown in FIG. It can also be installed at the tip and base of the).

At this time, when the guide roller 120a installed at the front end and the proximal end of the skid 110 is recommended to be landed on the skid 110, the slaping target slab 30 corresponds to the length of the scarfing target slab 30. The sensing unit 130 may be excluded because the front end is guided to land on the skid 110 in physical contact with the proximal end.

The operation of the slab alignment device having the above configuration will be described based on FIG. 5. Figure 5 is a schematic diagram showing the transport process of the scarfing target slab according to the present invention. Referring to the drawings, the continuously cast slab 20 is cut to a predetermined length in the torch cutting device 26 and then placed on the transfer table 40 by the table roller.

When the slab 20 cut to a predetermined length as described above is positioned on the transfer table 40, the tong crane (80a) is lifted in the state holding the slab 20, and transported to the storage 50, the storage The slab 20 arriving at 50 is to stay for a certain time to naturally cool. When the slab 20 accumulated in the collecting cabinet 20 is completely cooled, the slab 30 having a poor surface among the slabs is selected and placed in a separate collecting cabinet 50. Here, the separate collecting place may be located in the collecting place where the slab is naturally cooled as described above, or may be positioned at a distance. That is, it is possible to determine the area in which only the scarring target slab can be stored in the storage, it may be located at a short distance.

The scarfing target slab 30 that is placed in the collecting box 50 is hoisted by the tongs crane 80a and then hoisted so that the tongs crane 80a is driven to the collecting box 50 where the skid 110 is located. . As described above, the skid 110 is present at a predetermined position in the storage box for the scarfing slab 30 to be stably gripped by the pick-up crane 80b.

When the tongs crane 80a is positioned directly above the skid 110, the tongs crane 80a is recommended to land the scarfing slab 30 on the skid 110. 110) The scarfing target slab 30 is introduced into a gap between the pair of guide rollers 120 installed at both ends, and at this time, both side ends of the scarfing target slab 30 are physically connected to the guide roller 120. It is guided while in contact and lands on the skid 110.

In other words, when the scaffolding slab 30 is transported directly above the skid 110 and the tongs crane 80a is rolled up, the scaffolding slab 30 is left and right (the width direction of the scaffolding slab). The guide roller 120 installed in the skid 110 is swung in the gap, and the guide roller 120 supports both side ends of the slapping target slab to which the guide roller 120 is being recommended, and at the same time, the slapping target slab 30 is rolled in a direction. By rotating so as not to cause the left and right shaking of the scarfing slab 30 to be induced is to induce the correct landing position of the scarfing slab 30.

In addition, the detector 130 detects the twisting situation in the longitudinal direction of the scarfing target slab 30 when the scarfing target slab 30 is lowered. That is, when the scarfing target slab 30 is rolled up in the longitudinal direction when the slab 30 is recommended to the skid 110, any one of the sensing unit 130 installed at the tip and the base of the skid 110 is the scarfing target slab. A longitudinal bias of 30 is detected and a signal is sent to the controller.

According to the transmitted signal, the tongs crane (80a) is controlled to run in the longitudinal direction of the scarfing target slab (30) or send a warning to the driver of the tongs crane to ventilate. The warning to the driver here includes both visual and audible warnings such as beacons and chimes.

In addition, when the guide roller 120a is installed at the tip and base of the skimmer 110 instead of the sensing unit 130, the scarfing target slab 30 is installed at the tip and the base of the skimmer 110. As the scarfing slab 30 is introduced into the gap between the guide rollers 120a, the guide roller 120a supports the tip and the proximal end of the scarfing slab 30 and rotates in the winding direction of the scarfing slab 30. Lowering the alignment of the scarfing target slab 30 so that the front and rear shaking does not occur, thereby inducing the correct landing position of the scarfing target slab 30.

When the scarfing target slab 30 is guided between the guide rollers 120 and 120a of the skimmer 110 as described above, the picking crane 80b accurately positions the scarfing target slab 30 in a predetermined position. It will be able to carry the stable scarfing slab 30 to the scarfing charging table 60 can be performed smoothly.

On the other hand, the present invention is not limited only to the embodiments described above, but can be modified and modified within the scope not departing from the gist of the present invention, it should be seen that such modifications and variations are included in the technical idea of the present invention. do.

For example, in the above description, a tongs crane is used to transport the slabs from the transfer table to the pick-up box, and a pick-up crane is used to transport the scarfing slabs positioned at the pick-up to the scarfing charging table. And a conveying means for carrying out the role of the pick-up crane can transport the slab by traveling between the conveying table and the storage and the scarfing charging table.

The slab alignment device according to the present invention can be accurately positioned at the position for holding the scarfing slab by the pick-up crane when the selected scarfing slab is transported and stacked by the tongs crane. When the object to be scarfed to the table is transported to the table, there is an effect that can be carried stably and smoothly.

Claims (3)

The skid to which the scarfing slabs are stacked, A pair of guide rollers installed to maintain a gap equal to the width of the slab to be scarfed on the skid, Detecting unit for transmitting the signal by detecting the length of the slaping target slab on the skid, Slab alignment device including a control unit for controlling the operation of the crane gripping the slapping target slab according to the signal transmitted from the detection unit. The pair of guide rollers of claim 1, Slab alignment device characterized in that at least two sets are installed along the length of the skid. The slab alignment apparatus according to claim 1, further comprising a pair of guide rollers installed to maintain a gap equal to the length of the slab to be scarfed on the skid.

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