JPS59197516A - Transfer of bloom or slab in walking beam reheating furnace - Google Patents

Abstract

PURPOSE:To transfer a slab on bloom freely changing materials gap and transfer speed, by a method wherein the slab on bloom is transferred between the beams operating a suitable transfer distance by detecting the position of slab or bloom on the before stage beam in a split-type reheating furnace and then the after stage beam is operated. CONSTITUTION:Slabs on blooms 2e and 2f to be transferred are charged by an optional gap onto the before stage beam 1a of split-type reheating furnace. The position of slab on bloom 2e is detected with a detector 12 and the slab on bloom 2e is transferred between the beams operating the transfer distance from the detector 12 until the gap between the slab on bloom 2e and the slab on bloom 2d on the after stage beam 1b becomes a settled gap G. Then, the slab on bloom 2e is transferred to the original position of transferred slab on bloom 2d within the beam by operating the after stage beam. Those transfer between the beams and transfer within the beam are alternately carried out and the transfer between the beams is carried out by a fixed gap. By this method, the material transfer speed can be optionally changed and the utilization efficiency of reheating furnace can be improved in walking beam reheating furnace.

Description

【発明の詳細な説明】 本発明は、ウオーキングビーム式加熱炉において可動ビ
ームが材料進行方向で複数に分割されている加熱炉（以
下、分割型加熱炉という）の材料搬送方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for transporting materials in a walking beam heating furnace in which a movable beam is divided into a plurality of parts in the material advancing direction (hereinafter referred to as a divided heating furnace).

近時、連続鋳造装置あるいは分塊圧延によって製造され
た鋼片を、熱片のまま圧延工程に供する直送圧延、ある
いは熱片状態で一旦加熱炉に装入し、加熱・均熱した後
、圧延を行なうホットチャージが行なわれるようになっ
た。Recently, steel slabs produced by continuous casting equipment or blooming are subjected to direct rolling, in which they are subjected to the rolling process as hot slabs, or they are first charged into a heating furnace in the hot slab state, heated and soaked, and then rolled. A hot charge is now available.

ところで、ホットチャージの場合、被加熱材料の温度が
高いほど、加熱炉入口近傍の低温域を早い速度で通過さ
せ、加熱炉の高温域で集中的に加熱・均熱することが熱
放散を防止するうえで望ましい。By the way, in the case of hot charging, the higher the temperature of the material to be heated, the faster it passes through the low-temperature area near the entrance of the heating furnace, and intensive heating and soaking in the high-temperature area of the heating furnace prevents heat dissipation. It is desirable to do so.

また、スケール疵防止や材質特性あるいは省エネルギー
の点からも加熱炉内での材料移送速度を変更することが
望ましい。Furthermore, it is desirable to change the material transfer speed within the heating furnace from the viewpoint of preventing scale defects, material properties, and energy saving.

従来、炉内材料の移送速度を変更する手段としてウオー
キングビーム式の分割型加熱炉が使用され、それぞれの
可動ビームのサイクル数を変更することで対処されてい
た゛。しかしながら、このような従来の操業方法では可
動ビームのス１ヘローク（前進長さ）が一定長さに決ま
っているため５材料幅寸法か一定である場合にしか適用
できなかったり、材料間隔の調整量は可動ビームのスト
ロークの整数倍に限定される等の難点があって、加熱炉
の利用効率は極めて悪かった。Conventionally, a walking beam split heating furnace has been used as a means to change the transfer speed of materials in the furnace, and this has been done by changing the number of cycles of each movable beam. However, in this conventional operation method, the stroke (advance length) of the movable beam is fixed at a constant length, so it can only be applied when the width of the material is constant, or it is difficult to adjust the material spacing. There are drawbacks such as the amount being limited to an integer multiple of the stroke of the movable beam, and the utilization efficiency of the heating furnace was extremely poor.

本発明は、分割型加熱炉において、それぞれの材料幅が
異なっていても相対向する各可動ビーム上への移載に際
し、材料間隔を自在に変更でき、かつ移送速度も自由に
変更可能な新規な搬送方法を提供することを目的とする
。The present invention provides a novel method in which the spacing between materials can be freely changed and the transfer speed can be freely changed when transferring materials onto opposing movable beams even if the materials have different widths in a split heating furnace. The purpose is to provide a convenient transportation method.

以下、本発明の実施例を図面にもとすき説明する。第１
図は本発明を実施する分割型加熱炉であり、可動ビーム
が前段（装入側）と後段（抽出側）とに２分割さ扛てい
る例を示す。装入テーブル３によって加熱炉前面に搬送
された鋼片２は、チャージャー４によって炉内へ固定ス
キッド５を介して装入される。前段ビーム１ａと後段ビ
ーム１ｂは、それぞれサポート支柱］、Ｏａ、１０ｂで
支持され、その各サポー１へ支柱の基部は、トラス６ａ
。Embodiments of the present invention will be described below with reference to the drawings. 1st
The figure shows a split-type heating furnace for implementing the present invention, and shows an example in which the movable beam is divided into two parts: a front stage (charging side) and a rear stage (extraction side). The steel billet 2 transferred to the front side of the heating furnace by the charging table 3 is charged into the furnace via the fixed skid 5 by the charger 4. The front beam 1a and the rear beam 1b are supported by support struts], Oa, and 10b, respectively, and the base of the strut to each support 1 is connected to a truss 6a.
.

６ｂに固定しである。７ａ、７ｂは、上下駆動シリンダ
ーであり、前記トラス６ａ、６ｂをクランク機構８ａ、
８ｂを介して上下動する。９ａ、９ｂは前後進駆動シリ
ンダーであり、前記トラス６ａ、６ｂに接続され、任意
の前後進量の設定によって、トラスの前後進駆動を行な
うようになっている。It is fixed at 6b. 7a, 7b are vertical drive cylinders, and the trusses 6a, 6b are connected to a crank mechanism 8a,
It moves up and down via 8b. Reference numerals 9a and 9b denote forward and backward drive cylinders, which are connected to the trusses 6a and 6b, and are configured to drive the trusses back and forth by setting an arbitrary amount of forward and backward movement.

而して、前段ビーム１ａと後段ビーム１ｂは、それぞれ
独立して、上昇−前進一下降一後退を１サイクルとする
短形運動を行ないつつ固定スキッド５上の鋼片２を順次
装入側から抽出側方向（矢印Ｘ方向）へ移送する。１．
１ａ、１］、ｂは前段・後段各ビームの前後進移動量を
測定するために設けられたセルシンエンコーダである。The front beam 1a and the rear beam 1b independently move the steel pieces 2 on the fixed skid 5 from the charging side while performing a rectangular movement in which one cycle is ascending, advancing, descending, and retreating. Transfer in the extraction side direction (arrow X direction). 1.
1a, 1], b are celsin encoders provided to measure the amount of forward and backward movement of each of the front and rear beams.

１２は鋼片検出器（以下、単に検出器という）であり、
前段ビームで移送する鋼片の位置を検出するための例え
ばＨ，Ｍ、Ｄ等の周知の検出器が使用可能である。12 is a steel piece detector (hereinafter simply referred to as a detector),
Known detectors, such as H, M, D, etc., can be used to detect the position of the billet transported by the pre-beam.

該検出器１２の取付位置は、前段ビーム１ａの上方、下
方もしくは側方のいずれでもよいが、搬送方向について
は第６図に示すように前段ビームＪａが最抽出端、すな
わちビームの端部が抽出方向移動限界の位置（第６図の
仮想線ｙ＋）より内側の作動範囲であれば、どの位置で
もよいが、搬送トラッキング誤差の関係上、できるたけ
端部に近い方が望ましい。The mounting position of the detector 12 may be above, below, or to the side of the front beam 1a, but in the transport direction, as shown in FIG. Any position may be used as long as it is within the operating range of the extraction direction movement limit position (imaginary line y+ in FIG. 6), but it is desirable to be as close to the end as possible in view of transport tracking errors.

１３は炉内の鋼片を抽出テーブル１４に抽出するための
エギストラクターである。13 is an egistractor for extracting the steel pieces in the furnace onto the extraction table 14.

次に、上記構成の分割型加熱炉によって本発明を実施す
る具体的な方法を説明する。第２ａ図は被搬送鋼片２ｅ
、２ｆが前段ビームｌａ上に既に任意の鋼片間隔で装入
され、後段ビーム１ｂＪ：には鋼片２ａ〜２ｄが後述す
る方法で、既に一定の鋼片間隔Ｇで並へられている状態
を示す。Next, a specific method of implementing the present invention using the split-type heating furnace configured as described above will be explained. Figure 2a shows the transported steel piece 2e.
, 2f have already been charged onto the front beam la at an arbitrary spacing between steel slabs, and the steel slabs 2a to 2d have already been arranged at a constant spacing G on the rear beam 1bJ: by the method described later. shows.

なお、この時の後段ビーム１ｂは、最抽出側に退避停止
されており、また最後部の鋼片２ｄは前段ビーム１ａの
作動と干渉しない位置に載置され、鋼片２ｄの後端面（
装入側）と検出器１２との離隔距離Ｌｂは、鋼片２ｄが
検出器１２をオフした時からのビーム移送比９ＩＬを演
算するが、いずれの方法でも求めることができる。Note that the rear beam 1b at this time is retracted and stopped on the most extraction side, and the rearmost steel piece 2d is placed in a position that does not interfere with the operation of the front beam 1a, and the rear end surface of the steel piece 2d (
The separation distance Lb between the charging side) and the detector 12 is determined by calculating the beam transfer ratio 9IL from the time when the steel billet 2d turns off the detector 12, but it can be determined by any method.

さて、以下の実施例は前段ビームＩａ上の鋼片２ｅを抽
出側方向で搬送し、後段ビームｌｂ上の最後部鋼片２ｄ
との材料間隔が所望の鋼片間隔Ｇとなるように搬送する
までを第１段階（ビーム間移送）１次に鋼片２ｅを先の
鋼片２ｄが載置されていた同じ位置までさらに搬送する
までを第２段階（ビーム内移送）として説明する。Now, in the following example, the steel piece 2e on the front beam Ia is conveyed in the extraction side direction, and the rearmost steel piece 2d on the rear beam lb is conveyed.
In the first stage (beam-to-beam transfer), the steel billet 2e is further transported to the same position where the previous steel billet 2d was placed. The process up to this point will be described as the second stage (transfer within the beam).

まず第１段階であるが、第２ａ図の状態から前段ビーム
１ａのみを単独に作動すれは、第１段階の搬送終了後は
第２ｂ図の状態になる。この搬送終了後における位置関
係は、次式（１）のとおりである。First, in the first stage, if only the front beam 1a is operated independently from the state shown in FIG. 2a, the state shown in FIG. 2b will be obtained after the first stage of conveyance is completed. The positional relationship after this conveyance is completed is as shown in the following equation (1).

Ｌ　ｔ　＝　Ｌ　ｂ　−Ｇ・・・・・・・・（１）但し
、Ｌｔ：鋼片２ｃが検出器１２をオンしてから搬送され
る距離（ｒｎ　ｍ　） ｒ−ｂ　：後段ビームＪｂ上の鋼片２ｄの後端面と検出
器１２間の距離（丁ｎ　ｍ　）Ｇ　：鋼片間隔（ｍ　ｍ
　） なお、要搬送距ＦＪＩ　Ｌ　ｔには次の（２）式の制限
条件が必要である。すなわち、前段ビーム１ａで鋼片２
ｅを持ち上げ移送する際に、鋼片の重心の位置とビーム
先端の位置関係でオーバーハング許容量αを定めておか
ないと、ビームから鋼片が落下する危険があるためであ
る。実際のオーバーハング許容量は、鋼片の幅寸法の１
７３〜１／４の範囲であればよい。L t = L b -G (1) However, Lt: Distance (rn m) that the steel piece 2c is conveyed after turning on the detector 12 r-b: Above the rear beam Jb Distance between the rear end surface of the steel slab 2d and the detector 12 (min) G: Steel slab interval (mm
) Note that the required transport distance FJI L t requires the following limiting condition of equation (2). In other words, the steel piece 2 is attached to the front beam 1a.
This is because when lifting and transferring the steel piece, if the overhang allowance α is not determined based on the positional relationship between the center of gravity of the steel piece and the tip of the beam, there is a risk that the steel piece will fall from the beam. The actual overhang allowance is 1 of the width of the billet.
It may be in the range of 73 to 1/4.

Ｌｔ≦に＋α・・・・・・・　（２） 但し、Ｋ：検出器１２から重油出側にある前段ビーム１
ａの前端までの距離（ｍｍ） α：ビーム先端からのオーバーハング許容量（ｍ　ｍ　
） 以下、第３図および第４図によって、前段ビーム１ａに
よる鋼片２ｅの要搬送距ＦＪｌｔＬｔの具体的な制御方
法を説明する。+α for Lt≦ (2) However, K: front stage beam 1 located on the heavy oil outlet side from the detector 12
Distance to the front end of a (mm) α: Allowable overhang from the tip of the beam (mm
) Hereinafter, a specific method of controlling the required conveyance distance FJltLt of the steel billet 2e by the front beam 1a will be explained with reference to FIGS. 3 and 4.

現在位置における搬送対象の鋼片２ｅの前端面と検出器
１２との距離をＬｌとすると、Ｌｌが（３）式の条件を
満足している間は、前段ビーム１ａを最大入１−ローク
Ｓで作動させる。Let Ll be the distance between the front end surface of the steel billet 2e to be conveyed at the current position and the detector 12, then as long as Ll satisfies the condition of equation (3), the front beam 1a is turned to the maximum input 1-roke S. Activate it with.

Ｌ１≦Ｎ＋α−・・・・・　（３） 但し、Ｌｌ：Ｍ１４片２ｅの現在位置における前端面と
検出器１２との距離（ｍｍ） Ｎ　：前段ビーム１ａが重装入側にある時の検出器＋２
から前段ビーム１ａの 前端までの距離（ｍｍ） さて、前段ビーム１ａが重油出端に至った時、Ｌ＋＜Ｌ
ｔで、かつ次の（４）式の条件となった場合は次のス１
−ロークを最大ストロークＳで作動させると、鋼片の落
下の恐れがあるので、次回のス１〜ロークは最大ストロ
ークＳより小さいス１へ口−りで作動させなければなら
ない。L1≦N+α−... (3) However, Ll: Distance (mm) between the front end surface of the M14 piece 2e at the current position and the detector 12. N: Detection when the front beam 1a is on the heavy loading side. vessel +2
Distance from to the front end of the front beam 1a (mm) Now, when the front beam 1a reaches the heavy oil output end, L+<L
If t and the condition of the following equation (4) is satisfied, then the following step 1
- If the rake is operated at the maximum stroke S, there is a risk of the steel piece falling, so the next strokes must be operated at the stroke S1, which is smaller than the maximum stroke S.

このため１次回の搬送に備える前段ビームの後退ｉＭを
次の（５）式の制限条件で定める。For this reason, the retreat iM of the front beam in preparation for the first transport is determined by the following limiting condition of equation (5).

Ｌ＋＞Ｎ＋α・・・・・・・・・　（４）Ｌｎ≦Ｍ≦に
−Ｌ、十α−（５） 但し、Ｍ：前段ビーム最終ストローク直前のビーム後退
量（ｍ　ｍ　） Ｌｎ：要搬送距離Ｌｔのうちの残り移送量（ｍｍ） 以上の工程で、Ｌ＋＝Ｌｔとなった位置で前段ビーム１
ａを停止すれば、銅片２ｅのビーム間移送は終了し、鋼
片２ｅと後段ビーム１ｂ上のＳ片２ｄとの間隔は、一定
の間隔Ｇに載置される。L+>N+α・・・・・・・・・ (4) Ln≦M≦, −L, 10α− (5) However, M: Beam retreat amount just before the final stroke of the front stage beam (mm) Ln: Required transport Remaining transfer amount of distance Lt (mm) In the above process, at the position where L+=Lt, the front beam 1
If step a is stopped, the inter-beam transfer of the copper piece 2e is completed, and the distance between the steel piece 2e and the S piece 2d on the subsequent beam 1b is placed at a constant interval G.

次に、前段ビーム］、ａ上の後続鋼片２ｆを前記鋼片２
ｅと同様に搬送するための準備として、一旦、ビーム間
移送が終了した鋼片２ｅを待機位置まで搬送するが、こ
の明細書中ではこの搬送をビーム内移送とする。すなわ
ち、鋼片２ｅを該鋼片の後端面と検出器１２との間隔が
待機間隔Ｌｂとなるように移送するものであり、その手
順を第５図のフローチャートにもとすき説明する。Next, the preceding beam], the succeeding steel piece 2f on a is attached to the steel piece 2
In preparation for conveyance in the same manner as in e, the steel piece 2e that has been transferred between beams is once conveyed to a standby position, but in this specification, this conveyance is referred to as intra-beam conveyance. That is, the steel piece 2e is transferred so that the distance between the rear end surface of the steel piece and the detector 12 becomes the waiting interval Lb.The procedure will be explained with reference to the flowchart of FIG.

待機間隔Ｌｂの搬送にあたっては、次の（６）式の関係
を満たすｒ−ｂの値だけ後段ビーム］、ｂを単独に動か
すか、もしくは必要に応じて後段ビーム１ｂと前段ビー
ム１ａとを連結作動させ搬送する。When transporting the standby interval Lb, the rear beam 1b and the front beam 1a are moved individually by the value of r-b that satisfies the following equation (6), or the rear beam 1b and the front beam 1a are connected as necessary. Operate and transport.

Ｇ≦Ｌ　ｂ≦ｌ（十α十〇、Ｌｂ≧Ｋ・・・（６）とこ
ろで、鋼片２ｅに後続する次組片２ｆが、仮に後段ビー
ム１ｂの作動と干渉する範囲にあった場合は、後段ビー
ムｌｂを最大ストロークＳで作動すると後段ビーム１ｂ
の上昇作動によって次組片２ｆを部分的に持ち上げてし
まう危険性があるので、次組片２ｆと干渉しない範囲の
小さいス１へローフＳ′で後段ビーム１ｂを単独に作動
させ、鋼片の後端面と検出器との間の現在距離Ｌ２を確
認しつつ、銅片位置がｒ−ｂになった位置で停止する。G≦L b≦l (1α10, Lb≧K...(6) By the way, if the next set piece 2f following the steel piece 2e is in the range where it interferes with the operation of the rear beam 1b, , when the rear beam lb is operated at the maximum stroke S, the rear beam 1b
Since there is a risk of partially lifting the next steel piece 2f due to the rising operation of the steel piece, the rear beam 1b is operated independently in a small loaf S' of the steel plate in a small range that does not interfere with the next steel piece 2f. While checking the current distance L2 between the rear end face and the detector, the robot stops at the position where the copper piece position becomes rb.

この時、前段ビーム１ａは重装入側へ退避させている。At this time, the front beam 1a is retracted to the heavy loading side.

また、次組片２ｆが後段ビーム１ｂの作動範囲と干渉し
ない時は、次組片が次のビーム作動で後段ビーム１ｂと
干渉する範囲にあるかどうかを確認する。Further, when the next set 2f does not interfere with the operating range of the rear beam 1b, it is checked whether the next set 2f is in the range where it will interfere with the rear beam 1b in the next beam operation.

干渉する範囲に入っている場合、または干渉範囲になく
ても作業上前段ビーム１ａを同時に作動させたくない場
合は、当鋼片２ｅの重心が後段ビーム１ｂの作動範囲に
入っているかを確認し、作動範囲に入っていない場合は
、前・後段ビームを連結作動させ、次組片か後段ビーム
ｌｂと干渉しない位置で、かつ当鋼片２ｅの重心位置が
後段ビーム後退量にくるように移送する。If it is within the range of interference, or if you do not want to operate the front beam 1a at the same time even if it is not within the interference range, check whether the center of gravity of this piece 2e is within the operation range of the rear beam 1b. If it is not within the operating range, connect the front and rear beams and move the steel piece 2e to a position where it does not interfere with the next set or rear beam lb, and so that the center of gravity of the steel piece 2e is at the rear beam retreat amount. do.

その後は、前段ビーム１ａを重装入側へ退避させ、前記
の重心位置が後段ビームの作動範囲に入っている場合も
含めて、後段ビーム１ｂの単独作動で鋼片位置がＬｂに
なった位置で移送を停止する。After that, the front stage beam 1a is retracted to the heavy loading side, and the position where the billet position becomes Lb by independent operation of the rear stage beam 1b, including when the above-mentioned center of gravity position is within the operation range of the rear stage beam. to stop the transfer.

次鋼片２ｆが次のビーム作動で後段ビーム１ｂと干渉す
る範囲に入ってこない場合で、かつ操業上前段ビーム１
ａも作動させたい時は、前・後段ビームを連結作動し、
鋼片位置がＬｂになれば移送は終了する。なお、この連
結作動中、鋼片位置がＬｂとなる以前に、次鋼片２ｆが
次のビーム作動で後段ビーム１ｂと干渉する範囲に入っ
てくる場合がある。その際には、前記と同様の処理、す
なわち当鋼片２ｅの重心移動が必要なときの重心移動処
理および後段ビーム１ｂ単独での移送を行なう。。When the next beam 2f does not come into the range where it will interfere with the subsequent beam 1b during the next beam operation, and during operation, the first beam 1
If you want to operate a as well, connect the front and rear beams,
When the steel billet position reaches Lb, the transfer ends. During this connection operation, the next steel piece 2f may come into the range where it will interfere with the subsequent beam 1b in the next beam operation before the steel piece position reaches Lb. At that time, the same process as described above, that is, the process of moving the center of gravity of the steel piece 2e when it is necessary to move it, and the transfer of the latter beam 1b alone are performed. .

以上の第１段階（ビーム間移送）に続く第２段階（ビー
ム内移送）の移送処理によって、後段ビームｉｂ上での
各鋼片の間隔は、第２ｃ図に示す所望の間隔Ｇに設定さ
れたことになり、以後はビーム間移送とビーム内移送を
交互に繰り返せばよい。勿論、上記の移送作動中に炉内
への新たな後続鋼片の前段あるいは後段ビームｌｂの先
端の鋼片抽出が随時可能なことは言うまでもない。Through the above-described first step (inter-beam transfer) and subsequent second-step (intra-beam transfer) transfer process, the spacing between the steel slabs on the subsequent beam ib is set to the desired spacing G shown in FIG. 2c. Therefore, from now on, inter-beam transfer and intra-beam transfer may be repeated alternately. Of course, during the above-mentioned transfer operation, it is possible to extract a new succeeding steel billet into the furnace at any time at the tip of the front or rear beam lb.

なお、本発明を実施するための制御機構は、特に例示し
ていないが、検出器１２．セルシンエンコーダー１１ａ
、ｌｌｂ、駆動シリンダー９ａ、９ｂ等の入・出力機器
と周知の電子計算機システムとの組み合せにより自動ま
たは半自動制御システムが必要に応じて採用できる。さ
らに、実施例では可動ビームが２分割されている分割型
加熱炉の場合を示したが、可動ビームが３分割以上にな
っている加熱炉の場合も、前・後段ビームの相互関係を
置換するだけで本発明を実施しうろことは言うまでもな
い。Although a control mechanism for carrying out the present invention is not particularly illustrated, the control mechanism for implementing the present invention includes the detector 12. Sershin encoder 11a
, llb, drive cylinders 9a, 9b, etc., and a well-known electronic computer system, an automatic or semi-automatic control system can be adopted as necessary. Furthermore, although the example shows the case of a split-type heating furnace in which the movable beam is divided into two, in the case of a heating furnace in which the movable beam is divided into three or more, the mutual relationship between the front and rear beams may be replaced. It goes without saying that the present invention can be carried out by using only the following.

本発明によれば、前段ビーム上の鋼片間隔がランダムで
あっても、後段ビームへの移載の際に任意の鋼片間隔が
設定できるので、加熱炉の利用効率は極めて高くなり、
燃料の節減効果も大である。According to the present invention, even if the spacing between the steel slabs on the front beam is random, any spacing between the steel slabs can be set when transferring the steel slabs to the rear beam, so the utilization efficiency of the heating furnace is extremely high.
The fuel saving effect is also large.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は、本発明を実施する分割型加熱炉の概略を示す
側面図である。 第２ａ図、第２ｂ図および第２ｃ図は、鋼片の搬送工程
を示す側面図である。 第３図は、ビーム間移送工程の位置関係を示す拡大側面
図である。 第４図はビーム間移送作動のフローチャー１〜、第５図
はビーム内移送作動のフローチャー１〜である。 第６図は、検出器の設置位置を示す側面図である。 １ａ：前段ビーム　　　ｌｂ：後段ビーム２：鋼片　　
　　　　　　３：装入テーブル４：ブソシャ−５＝固定
スキッド ６ａ、６ｂニドラス　７’ａ、７ｂ：駆動シリンダー８
ａ、８ｂ：クランク機構 ９ａ、９ｂ：前後進駆動シリンダー １０ａ、１０ｂ：サポート支柱 １１ａ、ｌｌｂ：セルシンエンコーダ １２：鋼片検出器　　　１３：エキストラクター１４二
抽出テーブル 兜６７ ケー」２゜ 第４百FIG. 1 is a side view schematically showing a divided heating furnace for implementing the present invention. FIGS. 2a, 2b, and 2c are side views showing the conveying process of the steel billet. FIG. 3 is an enlarged side view showing the positional relationship of the beam-to-beam transfer process. FIG. 4 shows flowcharts 1-- of the inter-beam transfer operation, and FIG. 5 shows flowcharts 1-- of the intra-beam transfer operation. FIG. 6 is a side view showing the installation position of the detector. 1a: Front beam lb: Back beam 2: Steel piece
3: Charging table 4: Bushosha-5 = Fixed skid 6a, 6b Nidras 7'a, 7b: Drive cylinder 8
a, 8b: Crank mechanisms 9a, 9b: Forward and backward drive cylinders 10a, 10b: Support struts 11a, llb: Selshin encoder 12: Slab detector 13: Extractor 14 2 Extraction table helmet 67 K'2゜400th

Claims (1)

【特許請求の範囲】[Claims] 被搬送鋼片の移送方向に可動ビームが複数に分割された
ウオーキングビーム式加熱炉の前記可動ビーム間の鋼片
の搬送方法であって、前記可動ビームのうぢの前段ビー
ム上の鋼片位置を検出する検出器を設け、前段ビームを
該ビーム上の被搬送鋼片と後段ビーム上の既搬送鋼片と
の間隔が予め定められた設定間隔になるまで、前記検出
器からの移送距離を演算しつつビーム間移送し、ついで
後段ビームを作動して前記被搬送鋼片を前記既搬送鋼片
の元の位置までビーム内移送し、以後ビーム間移送とビ
ーム内移送を交互に行ない、一定の鋼片間隔でビーム間
移載することを特徴とする、ウオーキングビーム加熱炉
における鋼片の搬送方法。A method for transporting a steel billet between the movable beams of a walking beam heating furnace in which the movable beam is divided into a plurality of parts in the direction of transport of the billet to be conveyed, the method comprising: determining the position of the billet on a former beam of the movable beam; A detector is provided to detect the forward beam, and the conveyance distance from the detector is increased until the distance between the conveyed piece of steel on the beam and the conveyed piece of steel on the latter beam reaches a predetermined interval. While performing calculations, the beam is transferred between beams, and then the subsequent beam is operated to transfer the transferred steel piece within the beam to the original position of the transferred steel piece. After that, inter-beam transfer and intra-beam transfer are performed alternately, and the beam is transferred at a constant rate. A method for transporting steel billets in a walking beam heating furnace, characterized by transferring steel billets between beams at intervals of .