JPS6026521A - Method of piling steel piece and equipment therefor - Google Patents

Abstract

PURPOSE:To enhance efficiency in piling blooms manufactured by continuous casting, to prevent cooling of blooms, and to stabilize bloom piling work by poling blooms regularly and in a plurality of paralleled rows by repetition of both pushing of the blooms in the direction perpendicular to the bloom conveying direction and stepwise lowering of the piler. CONSTITUTION:Blooms 35a to 35c, which have been transferred onto a roller table 11 at a piling position are pushed to a piler main body 18 side by the pushing ram 15 of a pusher. At this time, since the finger 26 of a guide rod 24 is projecting in an erect position in the space between skids 20 of a piler 14, the bloom 35a abuts on the finger 26 and stops. Next, the piler 14 is lowered by the thickness of the bloom 35, and the next bloom is pushed in a similar manner to be piled up. When the predetermined quantity of blooms are piled up, the finger 26 is retreated to the brim of the piler, and the blooms are piled in a similar manner on the vacant piler 14. By repetition of this procedure, steel pieces can be piled efficiently in a plurality of rows.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for efficiently piling continuously cast steel pieces such as blooms, billets, and slabs.

When producing blooms, etc. using continuous casting equipment, the slab pulled out from below the mold moves to a horizontal state, solidifies, is cut to a fixed size, is taken care of, and then conveyed on a roller table until it reaches a fixed position at Pfi. The butcher t, which is a trowel extrusion device, is ejected from the trowel line and piled by the bailer t.The predetermined number of piled blooms are grabbed and held together by crane tongs.
It is delivered to the next process or to a freight car for transporting steel billets or to a temporary storage area.

Piling is used when there is a difference in capacity or operating timing between continuous casting equipment, including cutting equipment, and a rolling mill, or when it is necessary to operate only one of them. , amputation.

This is because rolling cannot be carried out continuously, and it is necessary to temporarily store the steel pieces obtained by continuous casting in a stockyard. In that case, it was considered that the steel pieces could be transported one by one using a crane, but in order to increase transport efficiency and to keep the steel pieces as cool as possible, they were piled. Also, when using a stockyard, it is piled to make effective use of the stockyard.

An outline of a conventional bloom piling device will be explained with reference to the drawings. Figure 1 shows multiple strands (3 strands in the figure)
1 is a plan view of the bailer position in the bloom continuous casting equipment, in which 1 is a roller table for conveying billets following the continuous casting equipment, 2 is a bushing for extruding steel billets installed on one side of the roller table 1, and 3 is the bushing. 2 and roller table li
The bailer 4 installed opposite to each other is a fixed skid placed between the bailer 3 and the roller table 1. The pusher 2 pushes out the steel pieces on the roller table l in a direction perpendicular to the conveying direction thereof, that is, toward the bailer side, and has a ram that moves forward and backward by, for example, a rack and pinion system or a cylinder system. Moreover, the bailer 3 can be raised and lowered to any desired level.

The piling method in this conventional device will be explained based on FIG. 5a is transferred onto the bailer 3 via the fixed skid 4 (Fig. 2, port 9). Next, as shown in FIG. 2, the bailer 3 is lowered by approximately the thickness of the bloom, and then the busher 2 is moved forward again to place the next bloom 5b on top of the bloom 5a (FIG. 2, 2). By repeating the lowering of the bailer 3 and the advance of the bushing 2 alternately in this way, the bloom 5C can also be stacked on the bloom 5b, and in this state, the bailer 3 is raised to the first level and the multiple stages are stacked. The bloom 5 is transported to a desired location by a crane (not shown).

However, in the above conventional piling means,
There were the following problems.

■ Since it is only stacked in one row on the bailer,
The number of times the crane has to be transported increases, resulting in poor work efficiency.

- When stacking steel billets, since there is no appropriate holding means at a position opposite to the billet extrusion means, a slight deviation in the extrusion stroke will make the stacked state unstable.

■ When steel pieces such as blooms stacked in a single row on a bailer are transported by crane and placed in a stockyard, the steel pieces are in a single row, so they cool relatively easily. therefore,
Next, it is necessary to heat the material in a heating furnace before rolling it in a rolling mill.

In view of the above-mentioned points, an object of the present invention is to provide a method that can rationally stack steel billets on a bailer according to their width dimensions and perform extremely efficient piling of steel billets. Another object of the present invention is to provide a piling device that can effectively carry out the piling method described above and does not require significant modification of existing devices.

The piling method of the present invention for achieving the above object includes:
The conveyed steel billets are pushed out in a direction perpendicular to the conveyance direction at the piling position of the conveyance line, transferred to the waiting bailer near the conveyance line, and then lowered by the thickness of the pine billet. By extruding the steel billets, the steel billets are sequentially stacked in multiple stages, and after the stacking of the first row is completed, this row is moved to the side opposite to the conveyance line on the bailer, and then the above-mentioned process is carried out again at a position near the conveyance line of the bailer. By repeating the operation, the steel slabs are stacked in multiple rows on the bailer, thereby making the most of the space on the bailer and efficiently piling and discharging the steel slabs.

Furthermore, the structure of the billet piling device according to the present invention is such that a billet piler for stacking steel billets is provided which can be raised and lowered, and a billet extrusion device which can move forward and backward in a direction perpendicular to the longitudinal direction of the billet is arranged. , a billet guide device is provided on the bailer on the opposite side of the billet extrusion device, and the billet guide device includes an arm that can move forward and backward in a direction perpendicular to the longitudinal direction of the bailer, and a tip end of this arm. It is characterized by a finger that stands upright in a free state and is pivoted to prevent it from falling toward the side opposite to the extrusion device, and the steel billet is correctly set in a predetermined position by the fingers of the billet guide device. In addition, no misalignment occurs when stacking.

The details of the present invention will be explained below based on the drawings.

FIGS. 3 and 4 show an embodiment of a billet piling device according to the present invention, which is installed across a roller table 1 following the gas cutting zone of a continuous casting device. That is, the roller table 11 at which the piling position can be placed
A pusher 12 that pushes out the steel piece on the roller table 11 in a direction perpendicular to the conveyance direction is arranged on one side, and a relay skid (fixed) is placed on the opposite side between the pusher 12 and the roller table 11. 13 and a bailer 14 are arranged in sequence to receive the steel billet pushed out by the busher 12.

The pusher 12 is the same as the conventional pusher 12, but in the illustrated example, a pair of extrusion rams 15 are synchronized by meshing a rack provided on the ram with a binion rotated by a motor 16 and a speed reducer 17. They are advancing and retreating.

The stroke of the extrusion ram 15 is:

It is assumed that it passes over the roller table 11 and reaches the bailer 14.

Further, the bailer 14 can be raised and lowered, and has a structure that allows a billet guide device, which will be described later, to enter.

That is, the bailer main body 18 consists of a frame with a length corresponding to the length of the steel piece to be placed, and the lower part of the bailer main body 18 is held by a rod 19i that moves up and down in a rack and pinion manner as shown in FIG. A plurality of skids 20 are fixed to the upper surface of the bailer main body 18 at intervals along the extrusion direction of the steel billet. Guide rollers 21 are attached to both sides of the reed bailer main body 18 so that it can be smoothly raised and lowered, and is rotated along guides 22.

Next, a billet guide device B is installed on the opposite side of the buttress 12 in the vicinity of the bailer 14. The guide device is composed of a pair of guide rod rows that move back and forth in the same direction as the bushing 12 and between the skid condyles of the bailer 14 by an electric rank pinion system, and a drive section thereof.

5 and 6 show details of this guide device. 5 A finger 26 is rotatably attached to the tip of the guide rod row via a pin 5, and the finger 26 stands upright in the free state. It has a gravity 27 at one end, and when the finger is upright, it can be moved backwards (
Guide rod side) A stopper is provided on the guide rod row at the front lower part of the finger attachment part to prevent it from falling over. Therefore, finger A will only rotate on the front side.

The height when the finger station is erected is approximately the same height as the height when multiple pieces of steel such as blooms are stacked on the bailer 3 to the desired height, and the copper pieces are brought in one by one. When doing this, make sure that the steel pieces stacked below do not slip. The frame and guide rod row are frame 29.
The pinion stand blade t is housed in the pinion stand blade and cover 31, and in the pinion stand blade t, the guide rod U is moved forward and backward by a combination of a pinion 32 connected to a driving means and a rack 33 provided on the lower surface of the guide rod row. In addition,
A finger turning roller 34 is provided at the top of the tip of the frame 29, so that when the rod is retreating, the finger is forced to fall forward and sink below the level of the top surface of the bailer when it hits the roller 34 (Fig. 6). See chain line 26'].

No 5 Butsusha 12 in the illustrated example. Although an electric rack and pinion system is shown as the drive mechanism for the bailer 14 and the billet guide device, part or all of these may be replaced by other known drive mechanisms (for example, one-cylinder type, etc.). Of course.

The present invention will be described in detail below using a piling device having the structure shown in the drawings.

First, as shown in Fig. 3, three blooms 35a, 35b,
Start with 35c being transported. In this state, as shown in FIG. 7(a), the fingers 26 of the guide device
stands upright and enters between the skid condyles of the bailer 14 to an intermediate position in the width direction, and the skid level of the bailer is at the same level as the roller table 11 (this is used as the reference position). The extrusion ram 15 of the bushing that is in the bloom is advanced in the width direction of the bloom, and as shown in FIG.
As shown in the figure, the bloom 35a on one end side is the relay skid 1.
The three blooms are completely transferred to the vira skid through step 3, and the three blooms are pushed out together until the end of the bloom 35a comes into contact with the finger 26. At this position, the extrusion ram 15 of the bushing is stopped, and the bailer 14 is lowered by approximately the thickness of the bloom as shown in FIG. 7(c), and then the next bloom 35b is moved as shown in FIG. 1st stage bloom 35
a, and the extrusion ram 15 is advanced again until the end of the bloom 35b contacts the finger station. In this way, by lowering the bailer and advancing the extrusion ram, the next nof room 35C is also placed on the bloom 35b, as shown in FIG.
The state becomes [e]. In this case, there is a finger 26 in the middle of the pipe that prevents it from falling backwards.

Since this serves as a stopper, there is no risk of the stacking of blooms being disturbed.

When the predetermined number of sheets have been stacked, the extrusion ram 15 is moved back and the fingers 26 are moved back to the edge of the bailer, and then the bailer is raised to the reference position as shown in FIG. Advance the ram 15 to push the first row of stacked blooms to the opposite side of the bailer, and bloom 3
53 to 35 C are brought into contact with the fingers 26I (FIG. 6 (G)). Then, as shown in FIG. , 35f, and proceeded to Figure 7
As shown in the figure, the same way as the first row of blooms was stacked, the second row of blooms was stacked on the right side of the bailer. When the piling of the sixth bloom 35 f is completed, the extrusion ram and fingers are retracted, and as shown in Fig. 7 (
As shown in e), after raising the bailer, grasp the lowest blooms 35a and 35d from both sides with the crane tongs 36, and pile the blooms '1Th35a~
35 Dispense the entire f to the next process. At this time, when the fingers are retracted, they fall down below the level of the top surface of the bailer as shown in FIG.

In the second explanation, an example was shown in which six blooms are piled in two rows on a bailer, but the number of rows and stages depends on the width and thickness of the steel billet, the width of the bailer receiving surface, and the carrying capacity of the crane. All you have to do is take it into consideration and make the appropriate law.

As explained above, according to the piling method of the present invention,
Since the space on the pine is utilized for efficient piling of steel billets, it is possible to improve the efficiency of piling work and save labor. Further, according to the device of the present invention,
The above method can be carried out reliably, and the work can be carried out smoothly without causing any deviation during piling. Furthermore, the present invention is advantageous in terms of equipment because the existing piling equipment can be used as is. Furthermore, multiple stages.

Since it can be piled in multiple rows, transported as a single reed, and stored in a stockyard, etc., cooling of the steel pieces can be suppressed as much as possible.

Especially, cooling can be slowed down on the inner side where the steel pieces are in contact with each other. Therefore, it is advantageous to use a heating device to heat the steel billet before the fifth rolling. Of course.

Since the steel pieces piled in multiple stages and rows are carried by a crane and transported to a stockyard, etc., it is possible to transport them efficiently without straining the handling of the crane, and the stockyard is also used effectively. It can be used and can effectively operate continuous casting equipment, rolling mills, etc.

[Brief explanation of drawings]

Fig. 1 is a plan view schematically showing a conventional piling device; Fig. 2 (a) to (d) are explanatory diagrams showing a conventional piling operation; Fig. 3 shows an embodiment of the piling device according to the present invention. 4 is a front view of FIG. 3, FIG. 5 is a plan view showing a concrete example of the billet guide device, FIG. 6 is a front view of FIG. 5, and FIGS. ] are explanatory diagrams sequentially showing the piling operation of the present invention. 11...Roller table, 12... Butcher, 13
... Relay skid, 14... Byler, 15... Extrusion ram, 18... Byler body, addition... Virus skid, Otsu... Steel billet kite device, 24... Guide rod, 25 ... Pin, 26 ... Finger, part ... Stopper, 34 ... Finger rotation roller, 35 ... Bloom, 36 ... Crane tongs. Patent applicant: Ube Industries Co., Ltd. Nippon Steel Corporation agent: Patent attorney Tomoyuki Yabuki (and one other person) Figure 7 (c) (f) Figure 7 (i) (su) Continued from page 1 ■Applicant Nippon Steel Corporation 2-6-3 Otemachi, Chiyoda-ku, Tokyo

Claims (2)

[Claims] (1) The conveyed billet is pushed out to the piling position of the conveyance line (in the direction perpendicular to the trowel conveyance direction and transferred to the side of the conveyance line on the waiting bailer, and then moved to the piling position for the thickness of the billet on the bailer). By descending and subsequently extruding the steel billets, the steel billets are stacked in multiple stages one after the other, and after the stacking of the first row is completed, this row is moved to the side opposite to the conveyance line on the bailer, and then again near the conveyance line of the bailer. A method for piling steel billets, characterized in that by repeating the above operations at different positions, the billets are stacked in multiple rows on a bailer, and the multiple rows of billets are grasped and transported together in that state. . (2) A bailer for stacking steel billets is provided so that it can be raised and lowered, and a steel billet extrusion device that can advance and retreat in a direction perpendicular to the longitudinal direction of the bailer is provided, and the billet is sandwiched between the pine and extruded by the steel billet. A billet guide device is provided on the opposite side of the extrusion device, and this billet guide device includes an arm that can advance and retreat in a direction perpendicular to the longitudinal direction of the bailer, and an arm that stands upright in a free state and extends toward the opposite side of the extrusion device. A piling device for steel billets, characterized in that the device comprises fingers that are pivoted so as to restrict the falling of the steel billet.