JP5581862B2 - Slab transfer device - Google Patents

Slab transfer device Download PDF

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JP5581862B2
JP5581862B2 JP2010157445A JP2010157445A JP5581862B2 JP 5581862 B2 JP5581862 B2 JP 5581862B2 JP 2010157445 A JP2010157445 A JP 2010157445A JP 2010157445 A JP2010157445 A JP 2010157445A JP 5581862 B2 JP5581862 B2 JP 5581862B2
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slab
hot
sag
rolled
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JP2012020795A (en
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弥 鎌田
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JFE Steel Corp
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Description

本発明は、熱間圧延される高温のスラブ(熱間圧延スラブ)の搬送装置に関するものである。なお、熱間圧延スラブとしては鋼スラブを主とするが、これに限るものではなく、銅スラブ、アルミニウムスラブ等の他の金属スラブであってもよい。   The present invention relates to a conveying device for a hot slab to be hot rolled (hot rolled slab). The hot-rolled slab is mainly a steel slab, but is not limited to this, and may be another metal slab such as a copper slab or an aluminum slab.

熱間圧延ラインについて、熱間圧延スラブとして鋼スラブを用いる場合を例にして説明する。   About a hot rolling line, the case where a steel slab is used as a hot rolling slab is demonstrated to an example.

図1に示すように、熱間圧延ラインでは、製鋼ラインの連鋳機1にて1000℃程度で鋳造された熱間圧延スラブ2を加熱炉5にて1300℃程度に加熱し、粗圧延機6、仕上圧延機7で圧延して1〜25mm程度まで薄く延ばし、巻取機8にてコイル状に巻き取る。   As shown in FIG. 1, in a hot rolling line, a hot rolling slab 2 cast at about 1000 ° C. in a continuous casting machine 1 of a steel making line is heated to about 1300 ° C. in a heating furnace 5, and a rough rolling mill 6. Rolled with a finish mill 7 and thinned to about 1 to 25 mm, and wound with a winder 8 in a coil shape.

その際に、製鋼ラインの連鋳機1にて鋳造された熱間圧延スラブ2は、スラブヤード3に一旦貯留後または鋳造直後に加熱炉5に装入される。そして、トラブルが発生した場合は、加熱炉5で加熱された場合でも圧延を見送り、スラブヤード3に一旦貯留される。   At that time, the hot-rolled slab 2 cast by the continuous casting machine 1 of the steelmaking line is charged into the heating furnace 5 after being temporarily stored in the slab yard 3 or immediately after casting. And when trouble occurs, even when it is heated in the heating furnace 5, the rolling is withdrawn and temporarily stored in the slab yard 3.

これらの工程では、熱間圧延スラブ2は、図2に示すような、ローラテーブル9で搬送されるテーブル搬送や、図3に示すようなクレーン10で搬送されるクレーン搬送によって搬送される(例えば、特許文献1参照)。   In these processes, the hot-rolled slab 2 is conveyed by table conveyance conveyed by the roller table 9 as shown in FIG. 2 or crane conveyance conveyed by the crane 10 as shown in FIG. 3 (for example, , See Patent Document 1).

特開平11−309505号公報JP 11-309505 A

熱間圧延スラブ2(以下、単にスラブともいう)は1000℃以上の温度を有するため、支持点間の距離を長くして支持した場合には、数分程度で数百mm垂れてしまう場合がある。   Since the hot-rolled slab 2 (hereinafter also simply referred to as slab) has a temperature of 1000 ° C. or higher, when it is supported with a long distance between the support points, it may sag several hundred mm in about several minutes. is there.

一般的に、テーブル搬送では、1000mm程度と短い支持点間距離で複数のテーブルローラによって搬送されるため、問題とはならない。   Generally, in table conveyance, since it is conveyed by a plurality of table rollers at a distance between support points as short as about 1000 mm, there is no problem.

これに対して、クレーン搬送では、スラブを掴む際のスラブ長手方向の間隔(支持点間距離)は、最も短い場合でも4000mm程度となり、かつ設備配置やコスト面からスラブを掴むスラブ長手方向位置は2個所(2対)であることが一般的であるため、図4に示すように、クレーン10で搬送途中にスラブ2が垂れて問題となる場合がある。また、その垂れ量は搬送時間とともに変わる。   On the other hand, in crane transport, the distance in the slab longitudinal direction (distance between the support points) when gripping the slab is about 4000 mm even at the shortest, and the slab longitudinal position for gripping the slab from the equipment layout and cost is Since it is common that it is two places (2 pairs), as shown in FIG. 4, the slab 2 may hang down in the middle of conveyance with the crane 10, and may become a problem. Further, the amount of dripping varies with the conveyance time.

クレーン搬送では、図5に示すように、搬送元のスラブ2を巻き上げ、走行移動後に搬送先にスラブ2を巻き下げする。走行移動する際には、下部に他の設備(下部設備)が配置されているため、スラブ2の垂れ量が大きいと下部設備に接触し、下部設備やクレーンの破損、落下等の重大事故が発生する。また、復旧には長時間必要となるため、生産ロスも甚大である。   In crane conveyance, as shown in FIG. 5, the slab 2 of the conveyance source is wound up, and the slab 2 is unwound to the conveyance destination after traveling. When traveling, other equipment (lower equipment) is placed in the lower part, so if the amount of slab 2 dripping is large, it will come into contact with the lower equipment, causing serious accidents such as damage to the lower equipment or crane, or dropping. Occur. Moreover, since it takes a long time for recovery, production loss is also enormous.

本発明は、上記のような事情に鑑みてなされたものであり、熱間圧延スラブをクレーンで搬送するスラブ搬送装置として、熱間圧延スラブの垂れによる他の設備との接触を適切に防止することができるスラブ搬送装置を提供することを目的とするものである。   The present invention has been made in view of the circumstances as described above, and appropriately prevents contact with other equipment due to sagging of the hot-rolled slab as a slab transfer device for transferring the hot-rolled slab with a crane. An object of the present invention is to provide a slab transfer device that can perform the above-described operation.

上記課題を解決するために、本発明は以下の特徴を有している。   In order to solve the above problems, the present invention has the following features.

[1]熱間圧延スラブをクレーンで搬送するスラブ搬送装置であって、搬送する熱間圧延スラブの垂れを検知する垂れ検知センサーを備えていることを特徴とするスラブ搬送装置。   [1] A slab conveyance device that conveys a hot-rolled slab with a crane, the slab conveyance device including a sag detection sensor that detects a sag of the hot-rolled slab to be conveyed.

[2]熱間圧延スラブの巻き上げ時の垂れ量を前記垂れ検知センサーで測定し、測定した垂れ量から走行移動時の垂れ量を予測し、予測した垂れ量から走行移動時に当該熱間圧延スラブが他の設備と接触すると判断される場合には、当該熱間圧延スラブの搬送を停止することを特徴とする前記[1]に記載のスラブ搬送装置。   [2] The amount of sag when the hot-rolled slab is rolled up is measured by the sag detection sensor, the amount of sag during travel is predicted from the measured amount of slab, and the hot-rolled slab during travel is calculated from the predicted amount of slab. When it is judged that is in contact with other equipment, the transport of the hot-rolled slab is stopped. The slab transport device according to the above [1].

[3]熱間圧延スラブが他の設備と接触すると予測される走行移動時の垂れ量に基づいて、当該熱間圧延スラブの巻き上げ時の垂れ量の上限値を設定しておき、当該熱間圧延スラブの巻き上げ時の垂れ量が前記上限値を超えている場合には、前記垂れ検知センサーがそれを検知して、当該熱間圧延スラブの搬送を停止することを特徴とする前記[1]に記載のスラブ搬送装置。   [3] Based on the amount of sag at the time of running movement predicted that the hot rolled slab is in contact with other equipment, an upper limit value of the amount of sag when the hot rolled slab is wound up is set in advance. [1] In the above [1], when the amount of sag at the time of rolling up the rolling slab exceeds the upper limit, the sag detection sensor detects it and stops the conveyance of the hot rolling slab. The slab conveyance device described in 1.

本発明においては、熱間圧延スラブの垂れによる他の設備との接触を適切に防止することができる。その結果、設備破損やその復旧による生産ロスを防止することができる。   In the present invention, it is possible to appropriately prevent contact with other equipment due to sagging of the hot-rolled slab. As a result, equipment loss and production loss due to recovery can be prevented.

熱間圧延ラインの一例を示す図である。It is a figure which shows an example of a hot rolling line. スラブのテーブル搬送の例を示す図である。It is a figure which shows the example of the table conveyance of a slab. スラブのクレーン搬送の例を示す図である。It is a figure which shows the example of the crane conveyance of a slab. スラブのクレーン搬送時にスラブが垂れた状態を示す図である。It is a figure which shows the state which the slab hung at the time of crane conveyance of a slab. スラブのクレーン搬送の際の手順を示す図である。It is a figure which shows the procedure in the case of the crane conveyance of a slab. 本発明の実施形態1を示す図である。It is a figure which shows Embodiment 1 of this invention. 本発明の実施形態2を示す図である。It is a figure which shows Embodiment 2 of this invention.

本発明の実施形態を図面に基づいて説明する。   Embodiments of the present invention will be described with reference to the drawings.

本発明の実施形態におけるスラブ搬送装置は、図3、図5に示したような、熱間圧延スラブをクレーンで搬送するスラブ搬送装置である。そして、搬送する熱間圧延スラブの垂れを検知する垂れ検知センサーを備えている。   The slab conveying apparatus in the embodiment of the present invention is a slab conveying apparatus that conveys a hot-rolled slab with a crane, as shown in FIGS. And the dripping detection sensor which detects dripping of the hot rolling slab to convey is provided.

[実施形態1]
図6は、本発明の実施形態1を示す図である。
[Embodiment 1]
FIG. 6 is a diagram showing Embodiment 1 of the present invention.

図6に示すように、この実施形態1においては、クレーン10に垂れ検知センサー(距離センサー)11がスラブ2の長手方向に沿って複数個(ここでは6個)配置されている。   As shown in FIG. 6, in the first embodiment, a plurality (six in this case) of sagging detection sensors (distance sensors) 11 are arranged on the crane 10 along the longitudinal direction of the slab 2.

そして、この実施形態1では、以下のような手順でスラブ2の搬送を行う。   And in this Embodiment 1, the slab 2 is conveyed in the following procedures.

(S1)まず、クレーン10で走行移動時のスラブ2と下部設備との間隔に基づいて、走行移動時のスラブ2の垂れ量の上限値Y2oを設定しておく。   (S1) First, based on the distance between the slab 2 and the lower equipment when traveling with the crane 10, an upper limit value Y2o of the amount of slab 2 drooping when traveling is set.

(S2)次に、クレーン10がスラブ2の巻き上げを完了したら、スラブ2の長手方向に沿って配置されている複数個の垂れ検知センサー11がそれぞれスラブ2までの距離を測定し、それぞれ測定された距離に基づいて、スラブ2の巻き上げ完了時の垂れ量Y1を算出する。   (S2) Next, when the crane 10 completes the winding of the slab 2, the plurality of drooping detection sensors 11 arranged along the longitudinal direction of the slab 2 measure the distance to the slab 2, and are respectively measured. Based on the measured distance, the amount of sag Y1 when the slab 2 is completely rolled up is calculated.

(S3)次に、算出した垂れ量Y1と、巻き上げ所要時間t1と、これからの走行移動時間t2とから、走行移動時間t2が経過した時の垂れ量Y2を下記の(1)式にて予測する。
Y2=(t1+t2)/t1×Y1 ・・・・・(1)
(S3) Next, based on the calculated sag amount Y1, the winding required time t1, and the future travel time t2, the sag amount Y2 when the travel time t2 has elapsed is predicted by the following equation (1). To do.
Y2 = (t1 + t2) / t1 × Y1 (1)

(S4)そして、予測された垂れ量Y2が上限値Y2o以下である場合、すなわち、
Y2≦Y2o ・・・・・(2)
の場合には、走行移動中(搬送中)にスラブ2が下部設備と接触しないと判断して、スラブ2の搬送を行う。
(S4) When the predicted sag Y2 is not more than the upper limit Y2o, that is,
Y2 ≦ Y2o (2)
In this case, it is determined that the slab 2 is not in contact with the lower equipment during traveling (conveying), and the slab 2 is conveyed.

(S5)一方、予測された垂れ量Y2が上限値Y2oを超えている場合、すなわち、
Y2>Y2o ・・・・・(3)
の場合には、走行移動中(搬送中)にスラブ2が下部設備と接触すると判断して、スラブ2の搬送を停止する。
(S5) On the other hand, when the predicted amount of sag Y2 exceeds the upper limit Y2o, that is,
Y2> Y2o (3)
In this case, it is determined that the slab 2 is in contact with the lower equipment during traveling (conveying), and the conveyance of the slab 2 is stopped.

このようにして、この実施形態1においては、スラブ2の垂れによる下部設備との接触を適切に防止することができる。その結果、設備破損やその復旧による生産ロスを防止することができる。   Thus, in this Embodiment 1, the contact with the lower installation by the dripping of the slab 2 can be prevented appropriately. As a result, equipment loss and production loss due to recovery can be prevented.

[実施形態2]
図7は、本発明の実施形態2を示す図である。
[Embodiment 2]
FIG. 7 is a diagram showing Embodiment 2 of the present invention.

図7に示すように、この実施形態2においては、スラブ2の垂れを検知する一対の垂れ検知センサー(光学式通過センサー)11、11が、スラブ2の搬送元の地面側に設置されている。ここで、この垂れ検知センサー11、11は、スラブ2の巻き上げ完了時の垂れ量Y1が予め設定した上限値Y1oを超えている場合に、そのことを検知するようになっている。すなわち、Y1≦Y1oの場合はOFF、Y1>Y1oの場合はONとなるようになっている。   As shown in FIG. 7, in the second embodiment, a pair of drooping detection sensors (optical passage sensors) 11 and 11 that detect drooping of the slab 2 are installed on the ground side from which the slab 2 is transported. . Here, the sag detection sensors 11 and 11 detect that when the sag amount Y1 when the slab 2 is completely rolled up exceeds a preset upper limit value Y1o. That is, when Y1 ≦ Y1o, it is OFF, and when Y1> Y1o, it is ON.

そして、この実施形態2では、以下のような手順でスラブ2の搬送を行う。   And in this Embodiment 2, the slab 2 is conveyed in the following procedures.

(P1)まず、クレーン10で走行移動時のスラブ2と下部設備との間隔に基づいて、走行移動時のスラブ2の垂れ量の上限値Y2oを設定し、その上限値Y2oと、巻き上げ所要時間t1と、走行移動時間t2とから、巻き上げ完了時の垂れ量Y1の上限値Y1oを下記の(4)式にて設定する。
Y1o=t1/(t1+t2)×Y2o ・・・・・(4)
(P1) First, based on the distance between the slab 2 and the lower equipment when traveling with the crane 10, the upper limit value Y2o of the amount of droop of the slab 2 when traveling is set, and the upper limit value Y2o and the winding time required From t1 and the traveling time t2, an upper limit value Y1o of the drooping amount Y1 at the completion of winding is set by the following equation (4).
Y1o = t1 / (t1 + t2) × Y2o (4)

(P2)次に、クレーン10がスラブ2の巻き上げを完了したら、スラブ2の搬送元の地面側に設置されている垂れ検知センサー11がスラブ2の巻き上げ完了時の垂れ量Y1の検知を行う。   (P2) Next, when the crane 10 completes the winding of the slab 2, the drooping detection sensor 11 installed on the ground side from which the slab 2 is transported detects the drooping amount Y1 when the hoisting of the slab 2 is completed.

(P3)そして、垂れ検知センサー11がOFFの場合(すなわち、Y1≦Y1oの場合)は、走行移動中(搬送中)にスラブ2が下部設備と接触しないと判断して、スラブ2の搬送を行う。   (P3) When the sag detection sensor 11 is OFF (that is, when Y1 ≦ Y1o), it is determined that the slab 2 does not come into contact with the lower equipment during traveling (conveying), and the slab 2 is conveyed. Do.

(P4)一方、垂れ検知センサー11がONの場合(すなわち、Y1>Y1oの場合)は、走行移動中(搬送中)にスラブ2が下部設備と接触すると判断して、スラブ2の搬送を停止する。   (P4) On the other hand, when the sag detection sensor 11 is ON (that is, when Y1> Y1o), it is determined that the slab 2 is in contact with the lower equipment during the traveling movement (during conveyance), and the conveyance of the slab 2 is stopped. To do.

このようにして、この実施形態2においては、スラブ2の垂れによる下部設備との接触を適切に防止することができる。その結果、設備破損やその復旧による生産ロスを防止することができる。   Thus, in this Embodiment 2, the contact with the lower installation by the drooping of the slab 2 can be prevented appropriately. As a result, equipment loss and production loss due to recovery can be prevented.

1 連鋳機
2 スラブ(熱間圧延スラブ)
3 スラブヤード
4 保熱ピット
5 加熱炉
6 粗圧延機
7 仕上圧延機
8 巻取機
9 テーブル(ローラテーブル)
10 クレーン
11 垂れ検知センサー
1 Continuous casting machine 2 Slab (hot rolled slab)
3 Slab Yard 4 Heat-Retaining Pit 5 Heating Furnace 6 Rough Rolling Machine 7 Finishing Rolling Machine 8 Winding Machine 9 Table (Roller Table)
10 Crane 11 Dripping sensor

Claims (3)

高温の熱間圧延スラブをクレーンで搬送するスラブ搬送装置であって、クレーンで搬送する前記高温の熱間圧延スラブの搬送時間とともに変化する垂れを検知する垂れ検知センサーを備え、搬送中の前記熱間圧延スラブの垂れによる前記熱間圧延スラブと他の設備との接触を防止することを特徴とするスラブ搬送装置。 Hot rolling the slab hot a slab transfer device for transferring a crane, comprising a sag detection sensor for detecting the sag that varies with the transport time of the high temperature of hot rolling a slab to transport a crane, the heat being transported A slab conveying device that prevents contact between the hot-rolled slab and other equipment due to drooping of the cold-rolled slab . 熱間圧延スラブの巻き上げ時の垂れ量を前記垂れ検知センサーで測定し、測定した垂れ量から走行移動時の垂れ量を予測し、予測した垂れ量から走行移動時に当該熱間圧延スラブが他の設備と接触すると判断される場合には、当該熱間圧延スラブの搬送を停止することを特徴とする請求項1に記載のスラブ搬送装置。   The amount of sag when the hot rolled slab is rolled up is measured by the sag detection sensor, the amount of sag during traveling is predicted from the measured amount of slab, and the hot rolled slab is moved from the predicted amount of slab to other The slab conveying device according to claim 1, wherein when it is determined to be in contact with the equipment, conveying of the hot-rolled slab is stopped. 熱間圧延スラブが他の設備と接触すると予測される走行移動時の垂れ量に基づいて、当該熱間圧延スラブの巻き上げ時の垂れ量の上限値を設定しておき、当該熱間圧延スラブの巻き上げ時の垂れ量が前記上限値を超えている場合には、前記垂れ検知センサーがそれを検知して、当該熱間圧延スラブの搬送を停止することを特徴とする請求項1に記載のスラブ搬送装置。   Based on the amount of sag during running movement that is predicted to contact the hot rolling slab with other equipment, the upper limit value of the amount of sag when the hot rolled slab is wound up is set. 2. The slab according to claim 1, wherein when the amount of sag during winding exceeds the upper limit, the sag detection sensor detects the slab and stops conveying the hot-rolled slab. Conveying device.
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