JP2000088471A - Method and apparatus for replacing door of heating furnace - Google Patents
Method and apparatus for replacing door of heating furnaceInfo
- Publication number
- JP2000088471A JP2000088471A JP10256201A JP25620198A JP2000088471A JP 2000088471 A JP2000088471 A JP 2000088471A JP 10256201 A JP10256201 A JP 10256201A JP 25620198 A JP25620198 A JP 25620198A JP 2000088471 A JP2000088471 A JP 2000088471A
- Authority
- JP
- Japan
- Prior art keywords
- door
- heating furnace
- arm
- frame
- charging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Drying Of Solid Materials (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Tunnel Furnaces (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、加熱炉扉の取替方
法および装置に関し、詳しくは、加熱炉扉の取替作業の
効率および安全性を向上させ得る加熱炉扉の取替方法お
よび装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for exchanging a heating furnace door, and more particularly, to a method and an apparatus for exchanging a heating furnace door capable of improving the efficiency and safety of the exchanging operation of the heating furnace door. About.
【０００２】[0002]
【従来の技術】製鉄所の厚板、大形、熱延工場などには
被加熱物である鋼片を熱間圧延前に加熱する加熱炉が設
けられており、そこでは炉保全のために定期的あるいは
随時に炉口に配置されている昇降式の扉（加熱炉扉）の
取り替えが行われる。この加熱炉扉は鉄構および耐火物
からなる大型重量物である（例えば、幅約４ｍ×高さ約
３ｍ×厚み約400mm ，重量約８〜９ton ）。2. Description of the Related Art A heating furnace for heating a steel slab to be heated before hot rolling is provided at a steel plate, a large plate, a hot rolling mill, etc. of a steel mill. The elevating door (heating furnace door) disposed at the furnace port is replaced regularly or as needed. This heating furnace door is a large heavy object made of a steel structure and a refractory material (for example, about 4 m in width, about 3 m in height, about 400 mm in thickness, and about 8 to 9 tons in weight).
【０００３】従来の加熱炉扉の取替方法を図３を用いて
説明する。天井クレーン３は設備構造上、そのクレーン
走行スパン４の端（クレーン限５）を加熱炉１の炉口上
空まで届かせることができない。そこで、扉２の取り外
し作業では、図示しない足場を組んで、扉２の上端、下
端に吊り金具を取り付け、クレーンガーダ６と天井クレ
ーン３からチェーンブロック７（７a,７b ）を介して吊
り段取りをする。なお、８はワイヤロープ、９はチェー
ン、30は扉開閉装置である。そして、扉２の下端を天井
クレーン３で吊り、かつ上端をクレーンガーダ６側のチ
ェーンブロック７a と天井クレーン３側のチェーンブロ
ック７b で吊るという相吊作業により、扉２を傾けて炉
口から取り外し、チェーンブロック７a,７b を徐々に緩
めて扉２を水平にしていく。そして、クレーンガーダ６
側のチェーンブロック７a の縁を切る。A conventional method for replacing a heating furnace door will be described with reference to FIG. The overhead crane 3 cannot reach the end of the crane traveling span 4 (the crane limit 5) above the furnace opening of the heating furnace 1 due to the facility structure. Therefore, in the removal work of the door 2, a scaffold (not shown) is assembled, hanging metal fittings are attached to the upper and lower ends of the door 2, and the hanging setup is performed from the crane girder 6 and the overhead crane 3 via the chain block 7 (7a, 7b). I do. In addition, 8 is a wire rope, 9 is a chain, and 30 is a door opening / closing device. Then, the lower end of the door 2 is suspended by the overhead crane 3 and the upper end is suspended by the chain block 7a on the crane girder 6 side and the chain block 7b on the overhead crane 3 side. The chain blocks 7a and 7b are gradually loosened to level the door 2. And crane girder 6
Cut the edge of the side chain block 7a.
【０００４】その後、天井クレーン３により扉２（古
扉）を所定の取替場所まで吊り搬送し、その取替場所に
て古扉を吊り下ろし、新扉を吊り上げて炉口前に吊り搬
送する。これ以降の新扉取り付け作業は、上記と逆の手
順で遂行する。[0004] Thereafter, the door 2 (old door) is suspended and transported by the overhead crane 3 to a predetermined replacement place, the old door is hung at the replacement place, a new door is lifted and transported in front of the furnace port. . Subsequent installation work of the new door is performed in the reverse procedure.
【０００５】[0005]
【発明が解決しようとする課題】上記従来方法では、扉
上端の吊り段取りは高所で行わねばならず、また、大型
重量物である扉を天井クレーンとチェーンブロックとで
相吊りしながら取り外し、この相吊り状態のまま徐々に
水平にしていく作業は熟練を要し、しかもその作業はロ
ーラテーブル10等足元の不安定な場所で行わねばならな
い。従って、極めて慎重に行わねばならず作業時間がか
かる。このように、従来の扉取替方法には、高所で、足
元が悪く、天井クレーンの届かない悪条件の下で多くの
危険作業が含まれ、そのため作業時間がかかるという問
題があった。In the above-mentioned conventional method, the hanging and setting of the upper end of the door must be performed at a high place, and the large heavy door is removed while being suspended by the overhead crane and the chain block. The work of gradually leveling the body in the suspended state requires skill, and the work must be performed in an unstable place such as the roller table 10 near the feet. Therefore, it must be performed very carefully and takes a long time. As described above, the conventional door replacement method has a problem that it involves a lot of dangerous work under bad conditions that are difficult to reach by an overhead crane at a high place, and therefore takes a long working time.
【０００６】本発明は、上記従来技術の問題点を解決
し、加熱炉扉の取替作業を安全かつ迅速に遂行できる加
熱炉扉の取替方法および装置を提供することを目的とす
る。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a heating furnace door replacement method and apparatus capable of safely and promptly performing a heating furnace door replacement operation.
【０００７】[0007]
【課題を解決するための手段】例えば図２に示すよう
に、加熱炉１には、被加熱物（鋼片）11を炉内に装入す
るために使用する装入装置12（図２ではリフトアップチ
ャージャー）が備わっている。リフトアップチャージャ
ーは、鋼片11を持ち上げるフォーク状の腕部13と、腕部
13を昇降可能に支持する腕部支持ローラ14と、腕部13を
進退させる腕部移動機構15と、該腕部移動機構15を駆動
するモータ16とを有する。なお、図２において図３と同
一または相当部分には同じ符号を付し説明を省略する。As shown in FIG. 2, for example, as shown in FIG. 2, a charging apparatus 12 (FIG. 2) used to load an object to be heated (a billet) 11 into the furnace. Lift-up charger). The lift-up charger includes a fork-shaped arm 13 for lifting a billet 11 and an arm
It has an arm supporting roller 14 that supports the arm 13 so as to be able to move up and down, an arm moving mechanism 15 that moves the arm 13 forward and backward, and a motor 16 that drives the arm moving mechanism 15. In FIG. 2, the same or corresponding parts as those in FIG. 3 are denoted by the same reference numerals, and description thereof will be omitted.
【０００８】また、リフトアップチャージャー以外の装
入装置としてはプッシャーがあり、これは、図示を省略
するが、腕部先端で鋼片側面を押して炉内に装入する装
置である。以上は装入装置で説明したが、抽出側にても
同様である。よって、装入・抽出( 装入および／または
抽出の意）を行う装置を装入・抽出装置と総称する。本
発明者らは、これら装入・抽出装置の腕部が炉口に対し
て進退可能に構成され、その進退移動範囲が天井クレー
ンの走行範囲と重なり、しかも構造が堅固であることか
ら、これを本来の被加熱物装入・抽出作業だけでなく加
熱炉扉取替作業にも利用することにより前記目的を達成
できることに着眼し、種々検討した結果、本発明を完成
した。As a charging device other than the lift-up charger, there is a pusher, which is not shown but is a device for pressing the side of the steel slab at the tip of the arm to load it into the furnace. The above description has been given of the charging device, but the same applies to the extraction side. Therefore, a device that performs charging / extraction (meaning of charging and / or extraction) is collectively referred to as a charging / extracting device. The present inventors have proposed that the arms of these loading / extracting devices are configured to be able to advance and retreat with respect to the furnace port, and that the range of advance and retreat overlaps the range of travel of the overhead crane, and that the structure is robust. The present invention has been completed as a result of various studies, focusing on the fact that the object can be achieved by utilizing not only the original work of charging / extracting the object to be heated but also the work of replacing the heating furnace door.
【０００９】すなわち本発明は、加熱炉の扉を取り替え
るにあたり、被加熱物を加熱炉内に装入・抽出する装入
・抽出装置に前記扉を支承可能な扉着脱治具を取り付
け、該治具を介して前記扉を取り替えることを特徴とす
る加熱炉扉の取替方法である。また、本発明は、被加熱
物を加熱炉内に装入・抽出する装入・抽出装置の腕部に
前記加熱炉の扉を支承可能な扉着脱治具を取り付けてな
る加熱炉扉の取替装置である。That is, according to the present invention, when replacing a door of a heating furnace, a door attaching / detaching jig capable of supporting the door is attached to a charging / extracting device for charging / extracting an object to be heated into the heating furnace. A method of replacing a heating furnace door, wherein the door is replaced via a tool. The present invention also provides a heating furnace door having a door attachment / detachment jig capable of supporting a door of the heating furnace attached to an arm of a charging / extracting device for charging / extracting an object to be heated into the heating furnace. Replacement device.
【００１０】前記装入・抽出装置は、リフトアップチャ
ージャー、プッシャー、その他これらに類するもののい
ずれであってもよい。前記扉着脱治具は、扉を起立のま
ま受ける扉受枠、該扉受枠に扉を固定する扉固定金具、
前記扉受枠を前記装入・抽出装置に固定する枠固定金
具、および作業用足場としての専用デッキを有すること
が好ましい。The charging / extracting device may be a lift-up charger, a pusher, or the like. The door attachment / detachment jig is a door receiving frame for receiving the door while standing, a door fixing bracket for fixing the door to the door receiving frame,
It is preferable to have a frame fixing bracket for fixing the door receiving frame to the loading / extracting device, and a dedicated deck as a work scaffold.
【００１１】[0011]
【発明の実施の形態】図１は、本発明の装入側での一実
施形態を示す側面模式図である。図１において、17は扉
着脱治具、18は扉受枠、19は扉固定金具、20は枠固定金
具、21は専用デッキであり、図２と同一または相当部分
には同じ符号を付し説明を省略する。図示のように、本
発明では、装入装置（装入・抽出装置）12に扉２を支承
可能な扉着脱治具17を取り付けて取替装置を構成し、扉
着脱治具17を介して扉２を取り替えることとした。この
例では、装入装置12はリフトアップチャージャーであ
り、その腕部13の段差部に扉着脱治具17を取り付けてい
る。FIG. 1 is a schematic side view showing one embodiment of the charging side of the present invention. In FIG. 1, reference numeral 17 denotes a door attaching / detaching jig, 18 denotes a door receiving frame, 19 denotes a door fixing bracket, 20 denotes a frame fixing bracket, and 21 denotes a dedicated deck. Is omitted. As shown in the drawing, in the present invention, a door attaching / detaching jig 17 capable of supporting the door 2 is attached to a charging device (charging / extracting device) 12 to constitute a replacement device. Door 2 was replaced. In this example, the loading device 12 is a lift-up charger, and a door attaching / detaching jig 17 is attached to a step portion of the arm portion 13.
【００１２】扉着脱治具17は、扉２を起立のまま受ける
断面Ｌ字状の扉受枠18、この扉受枠18に扉２を固定する
扉固定金具19、扉受枠18を前記装入装置に固定する枠固
定金具20、および作業用足場としての専用デッキ21を有
する。扉２の取り外し作業にあたっては、まず、待機位
置にあるリフトアップチャージャーの腕部13の段差部に
扉着脱治具17を据え付け、枠固定金具20にて腕部13に固
定する。前記段差部はクレーン走行スパン４内にあるか
ら、扉着脱治具17の据え付けには天井クレーンを使用す
ることができる。The door attaching / detaching jig 17 includes a door receiving frame 18 having an L-shaped cross section for receiving the door 2 while standing, a door fixing metal 19 for fixing the door 2 to the door receiving frame 18, and a door receiving frame 18 for the loading device. It has a frame fixing bracket 20 for fixing, and a dedicated deck 21 as a working scaffold. In removing the door 2, first, the door attaching / detaching jig 17 is installed on the step portion of the arm portion 13 of the lift-up charger at the standby position, and is fixed to the arm portion 13 by the frame fixing bracket 20. Since the step is in the crane traveling span 4, an overhead crane can be used for installing the door attaching / detaching jig 17.
【００１３】ついで、加熱炉扉２を扉開閉装置30にて扉
受枠18の底枠が通過できる高さ以上に上昇させ、腕部13
を炉口に向かって前進させ、扉受枠18が扉２の前面と接
触する直前の位置で停止させる。そして、扉２を下降さ
せて扉受枠18に預け、扉固定金具19にて扉２を前記扉受
枠18に固定し、扉２と扉開閉装置30とを縁切りする。扉
２の固定や扉開閉装置30との縁切り作業は、足場の良い
専用デッキ21上にて安全に遂行することができる。Next, the heating furnace door 2 is raised by the door opening / closing device 30 to a height at which the bottom frame of the door receiving frame 18 can pass, and the arm 13
Is advanced toward the furnace port, and stopped at a position immediately before the door receiving frame 18 comes into contact with the front surface of the door 2. Then, the door 2 is lowered and deposited in the door receiving frame 18, the door 2 is fixed to the door receiving frame 18 with the door fixing bracket 19, and the door 2 and the door opening / closing device 30 are cut off. The fixing work of the door 2 and the cutting operation with the door opening / closing device 30 can be safely performed on the dedicated deck 21 having a good footing.
【００１４】ついで、腕部13を待機位置へ後退させ、天
井クレーンによる扉吊り段取りを行い、扉固定金具19を
外して扉２（古扉）を所定の取替場所まで吊り搬送し、
その取替場所にて古扉を吊り下ろし、新扉を吊り上げて
炉口前に吊り搬送し、扉受枠18に預ける。これ以降の新
扉取り付け作業は、上記と逆の手順で遂行する。上記作
業手順より明らかなように、本発明によれば、天井クレ
ーンとクレーンガーダ６とによるチェーンブロックを介
した相吊り作業、必ずしも安定でない仮設足場での高所
作業、テーブルローラ等足元の悪い場所での玉掛作業と
いった危険作業は、これを全廃することができ、安全性
が格段に向上する。また、とくに熟練と手間を要する前
記相吊り作業が不要となったことで、作業時間も著しく
短縮する。Then, the arm 13 is retracted to the standby position, the door is set up by a ceiling crane, the door fixing bracket 19 is removed, and the door 2 (old door) is suspended and transported to a predetermined replacement place.
At the replacement place, the old door is hung down, the new door is hung up, suspended and transported in front of the furnace port, and deposited in the door receiving frame 18. Subsequent installation work of the new door is performed in the reverse procedure. As is apparent from the above operation procedure, according to the present invention, the hanging work via the chain block by the overhead crane and the crane girder 6, the work at high places on the temporary scaffold which is not always stable, and the place where the feet such as the table rollers are bad. Dangerous work such as slinging work can be completely abolished, and safety is greatly improved. In addition, the need for the above-mentioned suspending operation, which requires special skill and labor, is also eliminated, thereby significantly shortening the operation time.
【００１５】[0015]
【実施例】熱間圧延工場の加熱炉扉取替工事に本発明を
適用した。加熱炉は２基あって、その一方に備えられた
装入装置はリフトアップチャージャー、他方に備えられ
た装入装置はプッシャーであり、リフトアップチャージ
ャーでは図１に示したように腕部の段差部に扉着脱治具
を取り付け、プッシャーでは図示を省略するが腕部の先
端に扉着脱治具を取り付けた。EXAMPLE The present invention was applied to a heating furnace door replacement work in a hot rolling mill. There are two heating furnaces. The charging device provided on one of them is a lift-up charger, and the charging device provided on the other is a pusher. In the lift-up charger, as shown in FIG. A door attachment / detachment jig was attached to the arm, and a door attachment / detachment jig was attached to the tip of the arm, although not shown in the figure with a pusher.
【００１６】この加熱炉扉取替工事は、従来、図３に示
した要領で実施されており、危険度が高く、各炉での工
事開始から足場仮設を経て扉取り外し完了までに延べ15
時間を要していたが、本発明により、安全性が格段に向
上し、工事開始から扉着脱治具取り付けを経て扉取り外
し完了までに要する延べ時間が5.5 時間に短縮し、ま
た、マンパワーも従来の216 人・時間から、44人・時間
へと削減するという顕著な効果が得られた。Conventionally, this heating furnace door replacement work has been carried out in the manner shown in FIG. 3 and has a high degree of danger, and it takes a total of 15 days from the start of work in each furnace to the completion of door removal through temporary scaffolding.
Although it took time, the present invention greatly improved safety, reduced the total time required to complete the door removal from the start of construction through the installation of the door removal jig to 5.5 hours, and the manpower was also conventional. From 216 people / hour to 44 people / hour.
【００１７】[0017]
【発明の効果】かくして本発明によれば、加熱炉扉の取
替作業を安全かつ迅速に遂行できるようになるという優
れた効果を奏する。As described above, according to the present invention, there is an excellent effect that the replacement operation of the heating furnace door can be performed safely and promptly.
【図１】本発明の装入側での一実施形態を示す側面模式
図である。FIG. 1 is a schematic side view showing one embodiment of a charging side of the present invention.
【図２】鋼片の装入装置の一例を示す側面模式図であ
る。FIG. 2 is a schematic side view showing an example of a billet loading device.
【図３】従来の加熱炉扉取替方法を示す側面模式図であ
る。FIG. 3 is a schematic side view showing a conventional heating furnace door replacement method.
１ 加熱炉 ２ 扉（加熱炉扉） ３ 天井クレーン ４ クレーン走行スパン ５ クレーン限 ６ クレーンガーダ ７ チェーンブロック ８ ワイヤロープ ９ チェーン 10 ローラテーブル 11 被加熱物（鋼片） 12 装入装置（装入・抽出装置） 13 腕部 14 腕部支持ローラ 15 腕部移動機構 16 モータ 17 扉着脱治具 18 扉受枠 19 扉固定金具 20 枠固定金具 21 専用デッキ 30 扉開閉装置 DESCRIPTION OF SYMBOLS 1 Heating furnace 2 Door (heating furnace door) 3 Overhead crane 4 Crane traveling span 5 Crane limit 6 Crane girder 7 Chain block 8 Wire rope 9 Chain 10 Roller table 11 Heated object (Slab) 12 Charging device (Charging / Extraction device) 13 Arm 14 Arm support roller 15 Arm moving mechanism 16 Motor 17 Door attaching / detaching jig 18 Door receiving frame 19 Door fixing bracket 20 Frame fixing bracket 21 Dedicated deck 30 Door opening / closing device
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高木 清 岡山県倉敷市水島川崎通１丁目（番地な し） 川崎製鉄株式会社水島製鉄所内 Ｆターム(参考） 3L113 AC31 AC42 AC45 AC46 AC63 AC64 AC75 AC90 BA35 DA01 DA07 DA15 DA21 4K034 AA17 AA19 BA08 CA01 GA18 4K050 AA01 BA02 CA19 4K051 AA03 AB07 MB05 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kiyoshi Takagi 1-chome, Mizushima-Kawasaki-dori, Kurashiki-shi, Okayama Pref. DA01 DA07 DA15 DA21 4K034 AA17 AA19 BA08 CA01 GA18 4K050 AA01 BA02 CA19 4K051 AA03 AB07 MB05
Claims (2)
熱物を加熱炉内に装入・抽出する装入・抽出装置に前記
扉を支承可能な扉着脱治具を取り付け、該治具を介して
前記扉を取り替えることを特徴とする加熱炉扉の取替方
法。When a door of a heating furnace is replaced, a door attaching / detaching jig capable of supporting the door is attached to a charging / extracting device for charging / extracting an object to be heated into the heating furnace. Replacing the door by heating the furnace.
入・抽出装置の腕部に前記加熱炉の扉を支承可能な扉着
脱治具を取り付けてなる加熱炉扉の取替装置。2. A heating furnace door replacement in which a door attaching / detaching jig capable of supporting a door of the heating furnace is attached to an arm of a charging / extracting device for charging / extracting an object to be heated into the heating furnace. apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25620198A JP3674331B2 (en) | 1998-09-10 | 1998-09-10 | Heating furnace door replacement method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25620198A JP3674331B2 (en) | 1998-09-10 | 1998-09-10 | Heating furnace door replacement method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000088471A true JP2000088471A (en) | 2000-03-31 |
| JP3674331B2 JP3674331B2 (en) | 2005-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25620198A Expired - Fee Related JP3674331B2 (en) | 1998-09-10 | 1998-09-10 | Heating furnace door replacement method and apparatus |
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| Country | Link |
|---|---|
| JP (1) | JP3674331B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452444A (en) * | 2013-08-28 | 2013-12-18 | 江苏高皓工业炉有限公司 | Drying-box door |
-
1998
- 1998-09-10 JP JP25620198A patent/JP3674331B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452444A (en) * | 2013-08-28 | 2013-12-18 | 江苏高皓工业炉有限公司 | Drying-box door |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3674331B2 (en) | 2005-07-20 |
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