JP2012016734A - Crop sorting/recovering device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To certainly, efficiently sort and recover crops every type of steel, and to certainly, efficiently recover a test material.SOLUTION: A crop sorting/recovering device disposed just after the process of cutting a hot-rolled steel has a crop chute 7a, a crop pit 7c and a sampling instrument 8 disposed on the upper side of the crop chute, and the specific crops are sorted and recovered by taking out and putting in the sampling instrument. The device is further provided with a sorter for sorting specific crops on the downstream side of the sampling instrument.

Description

  The present invention relates to an apparatus for separating and recovering crops and extracted samples (test materials) generated in a steel rolling line.

  In the steel material after hot rolling (hereinafter, the steel material after hot rolling is referred to as “hot rolled steel material”), the front and rear ends are cut off and adjusted to a predetermined length in the shear cutting process. It is conveyed to the process. The crop generated at this time is reused as an iron source in a steelmaking factory.

  As shown in FIG. 1 (a), in the conventional shear cutting process after hot rolling, the hot-rolled steel material 1 is transported to a predetermined position of the cutting machine by the transport roller 2, and is held as shown in FIG. 1 (b). In a state where the hot-rolled steel material 1 is fixed by the means 3, the blade 4 is raised, and the tip portion of the hot-rolled steel material 1 is cut off. At this time, the generated crop 5 is dropped on a crop chute (not shown). And as shown in FIG.1 (c), the hot-rolled steel material 1 by which the front-end | tip was cut off is conveyed to a predetermined position, and is cut | disconnected by predetermined length. By repeating this operation, several steel materials are cut from one hot-rolled steel material. As shown in FIG. 1 (d), the rearmost end of the hot-rolled steel material 1 at the rearmost end is raised with the rear end fixed by the holding means 3, whereby the rear end portion is cut and a crop 5 is generated. To do. As shown in FIG. 1E, the hot-rolled steel material 1 is transported to the next process by the transport means 2, and the crop 5 is dropped onto a crop chute (not shown) by the pusher 6 or the like.

  As shown in FIGS. 2A and 2B, the crop 5 dropped on the crop chute 7a is collected by the crop bucket 7d or the crop bucket 7e prepared in the crop pit 7c. The crop pit 7c is filled with water, and the crop 5 is cooled simultaneously with recovery. At this time, it is possible to adjust whether the crop is collected in the crop bucket 7d or the crop bucket 7e by the switching bar 7b. Normally, when one of the crop buckets 7e is full, the direction of the switching bar 7b is changed, and the crop 5 is guided to the other crop bucket 7d, while the crop bucket 7e is lifted and moved, and an empty crop bucket ( (Not shown) is placed at a predetermined position.

  By the way, there are some steel types containing expensive Mo and V in hot-rolled steel materials. If the crops of such special steel types can be collected separately from the crops of steel types not containing Mo or V, the refining process in the steelmaking factory Can be reused for the adjustment of the components, and the cost of the auxiliary material can be suppressed. If the above-described switching bar 7b is used, it is also possible to collect and collect the crop 5 by steel type.

  However, if the switching bar 7b is arranged at a position as shown in FIG. 2B, normally, the crop 5 can be guided to the crop bucket 7e (see the broken line), but when the crop 5 falls from the crop chute 7a. In rare cases, the crop may fall into a crop bucket 7d that is different from the planned crop bucket 7e due to the impact (see the alternate long and short dash line). If the crop 5 is simply reused as an iron source, even if the crop 5 falls into a crop bucket 7d that is different from the planned crop bucket 7e, there is no particular problem. When processing a small lot of hot-rolled steel such as special steel grades containing V, if other steel grade crops are mixed, it will hinder component adjustment when reused for component adjustment in the refining process of a steel mill. There is a risk of coming.

  Regarding the separate collection of crops, for example, Patent Document 1 and Patent Document 2 include a crop processing apparatus and a crop in which a transport line from a cutting machine to a crop back is provided, and the crop is dropped from the transport line into a crop bag and separated. A processing method is disclosed.

JP 2003-25142 A JP 52-156480 A

  In the inventions of Patent Documents 1 and 2, a pusher is used in the step of dropping the crop into the conveyance line and the step of dropping it into the crop back. However, in the case of a hot rolled steel material, the crop may be welded to the pusher when dropped. is there. Since the cutting process of the hot-rolled steel material is installed at a position immediately after the hot-rolling process, if the cutting process is interrupted as a result of welding, the rolling schedule is delayed.

  An object of the present invention is to provide a crop separation and collection device that can accurately and more easily collect and collect crops than in the past.

  The gist of the present invention is the crop fraction collection device shown in the following (1) to (3).

  (1) A crop separation and recovery device arranged immediately after the hot-rolled steel material cutting step, which has a crop chute, a crop pit, and an extraction means arranged above the crop chute, and the extraction means is Crop separation and collection device that separates and collects specific crops.

  (2) The crop separation / collection device according to (1), further comprising a separation unit that separates the specific crop downstream of the extraction unit.

  (3) The crop fraction collection device according to (1) or (2) above, wherein the specific crop is a crop containing a test material and / or a specific element.

  According to the present invention, it is possible to reliably and efficiently perform fractional recovery of crops containing expensive specific elements such as Mo and V and recovery of test materials. Moreover, since the crop fraction collection apparatus of this invention can reduce the opportunity of welding to the pusher of a crop, it can suppress producing a delay in a rolling schedule.

The schematic diagram which shows the cutting process of steel materials The figure which shows each state of (a)-(e) Schematic diagram showing a conventional crop recovery device (a) Top view (b) Side view The schematic diagram which shows the example of the crop fraction collection | recovery apparatus which concerns on this invention (a) Top view (b) Side view The schematic diagram which expressed the example of the crop fraction collection in detail by this invention The figure which shows each state of (a)-(e) Schematic diagram showing in detail another example of crop fraction collection according to the present invention (a) to (c) showing the respective states

  As shown in FIGS. 3A and 3B, the crop fraction collection device according to the present invention is arranged, for example, downstream of the blade 4 of the cutting machine, and includes a crop chute 7a, a crop pit 7c, and a crop chute 7a. And a sampling means 8 disposed above the sampling means. The sampling means 8 separates and collects a specific crop (not shown).

  When the normal crop 5 is collected, the extraction means 8 is disposed at a position away from the crop chute 7a as shown in FIG. That is, the extraction means 8 is removed. For this reason, as in the case of FIGS. 2A and 2B described above, the crop 5 is dropped on the crop chute 7a and collected by the crop bucket 7d or the crop bucket 7e prepared in the crop pit 7c. Similar to the above-described example, the switching bar 7b can adjust whether the crop is collected in the crop bucket 7d or the crop bucket 7e.

  In the case of collecting the specific crop 5a, as shown in FIG. 4B, the extraction means 8 is disposed at a position where the crop chute 7a is blocked. That is, the extraction means 8 is inserted. For this reason, the specific crop 5a falls into the extraction means 8 as shown in FIG. 4 (c), and thereafter, as shown in FIG. 4 (d), the extraction means 8 places the specific crop 5a on it. , Returned to the original position. Then, as shown in FIG. 4E, the specific crop 5a is dropped into the collection conveyance path 9 and conveyed to a predetermined place when the extraction means 8 tilts.

  Since the crop sorting and collecting apparatus according to the present invention has such a configuration, it is possible to reliably and efficiently collect and collect a normal crop and a specific crop.

  As shown in FIG. 5, it is preferable that the apparatus further includes a sorting unit for further sorting the specific crop downstream of the sampling unit. That is, as shown in FIG. 5 (a), the crop receiver 10 is inserted (that is, moved to the right in the drawing) and placed above the collection transport path 9, and in this state, one end of the extracting means 8 is placed. , The specific crop 5 a can be dropped into the crop receiver 10. Thereafter, as shown in FIG. 5 (b), the crop receiver 10 is pulled out (that is, moved to the left in the drawing), and further, as shown in FIG. 5 (c), the crop receiver 10 is tilted. The specific crop 5a can be dropped into the specific crop bucket 7f.

  By combining such devices, the specific crop 5a can be collected separately without using a pusher.

  The specific crop means a test material for component analysis or investigation of mechanical properties, or a crop containing a specific element such as Mo or V.

  According to the present invention, it is possible to reliably and efficiently perform fractional recovery of crops containing expensive specific elements such as Mo and V and recovery of test materials. Moreover, since the crop fraction collection apparatus of this invention can reduce the opportunity of welding to the pusher of a crop, it can suppress producing a delay in a rolling schedule.

DESCRIPTION OF SYMBOLS 1 Hot rolled steel material 4 Blade 3 Holding means 2 Conveyance means 5 Crop 6 Pusher 7a Crop chute 7c Crop pit 7d, 7e Crop bucket 7f Specific crop bucket 7b Switching bar 8 Extraction means 9 Collection conveyance path 10 Crop receiving

Claims (3)

A crop fraction collection device arranged immediately after the hot-rolled steel material cutting step,
A crop chute, a crop pit, and extraction means disposed above the crop chute,
A crop separation and collection device, wherein a specific crop is separated and collected by removing and inserting the extraction means.   2. The crop sorting and collecting apparatus according to claim 1, further comprising a sorting unit that sorts the specific crop downstream of the sampling unit.   3. The crop fraction collection apparatus according to claim 1, wherein the specific crop is a test material or / and a crop containing a specific element.

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