JP3581107B2 - Supporting tire for rotary kiln and its mounting method - Google Patents

Description

【００３１】
（実施例２）
図５は、本発明に係るロータリーキルン用支持タイヤの第２の実施例を示すもので、タイヤの外径側の表開先の形状を示しており、タイヤの各分割片２，２の両接合部に沿ってタイヤの内径側に設けたＶ型の裏開先４に加えて、タイヤ厚の外径側に溶接用表開先として、断面形状がＨ型状であって、その外径側の開先溝８がタイヤ表面に開口するように形成して、ロータリーキルン用支持タイヤを構成したものである。
一般に、突合せ溶接における角変形を軽減する方法として、片開先（例えばＵ型またはＶ型）の場合より、開先を表裏に分割した両開先（例えばＸ型またはＨ型）の方が有効であることは周知である。
【００３２】
また、二分割タイヤをキルン本体に仮組みする際に、各分割片２，２が接合面に沿って密着する接触面を有することが、リング形状のタイヤの真円度を保って表面合わせを行い易くするのであり、Ｘ型やＨ型の両面開先にあってはその中央部に位置するこの接触面９が溶接の収縮応力に対して拘束部となり、板厚の表裏間における支点の役割をもなして、実施例４で後述する如く発生した収縮力を拮抗させる結果、角変形を減ずる効果をもたらすのである。
【００３３】
このような溶接における基本的な両開先を保持するように、この実施例では、実施例１の開先形状に加えて、更にタイヤの外径側に開先部の断面形状がＨ型状をなしてタイヤ外径の表面に開口するように開先溝８を形成したものである。この実施例に示すＨ型状開先は、実施例１の内径側のＶ型の開先内を溶接した後工程でのタイヤ外径側をガウジングなどで開先取りする手間を大巾に短縮できると共に、更に、タイヤ接合部において高熱を伴う溶断の作業量を減じ、タイヤ素材への入熱量とその影響による歪み変形を軽減する目的を持って予めＨ型状に開先を形成したものである。
【００３４】
（実施例３）
図６は、本発明に係るロータリーキルン用支持タイヤの第３の実施例を略示したもので、上記実施例２記載のタイヤ接合部に設けたＨ型状の開先に、更にタイヤ外径側に開口した開先溝８内に、二分割したタイヤの表面肌合わせ用として別途製作した肌合わせダミー１０を挿入し、しかも取外し可能なように仮止めして形成したものである。
【００３５】
キルン本体の所要個所において二分割したタイヤ各分割片２，２を仮組みする際に、外径側に開先溝８が開口した図５の状態のままでは、リング状タイヤの表面肌合わせがむずかしく寸法精度を出しにくい等の不便性があり、これを解決するため予め両接合部の表開先のタイヤ外径側の開先溝８内に肌合わせダミー１０を挿入し、取外し可能なように仮止めしたものである。これにより二分割タイヤのキルン本体装着に際して仮組み肌合わせが行いやすくなって、作業時間や工期の短縮が出来ると共に、分割タイヤの接合部溶接における拘束の役割をも果たす効果があり、歪み変形の防止にも有効に作用するのである。
【００３６】
（実施例４）
一般にロータリーキルンには、本体であるセルにタイヤを固定することなく、隙間即ちクリアランスが設けて有る。通常は、タイヤ嵌着個所となるセルの外周上に鋼製の敷板を適宜の間隔をもって固定し、この敷板とタイヤとの間にクリアランスを設けて、両者間に若干の回転ズレを有しながら、円滑なキルン回転が保持される構造となっている。クリアランスはキルン加熱時におけるセルの膨張拡径を吸収し、セルやタイヤが損傷することなくスムーズなキルン回転が保持されるように、例えば２〜８ｍｍの範囲で適正な間隙に設定してある。このため、タイヤリングには真円であることが必要条件とされているが、使用経過年数の長いロータリーキルン用支持タイヤの中には、繰返し補修や老朽によって楕円状に変形したものも見受けられる。
【００３７】
実際に、タイヤが変形した例として、老朽・損耗により交換のため取外したロータリーキルン用支持タイヤでその直径を実測したところ、タイヤの２方向直径（Ｘ・Ｙ）において２５ｍｍの差が確認されたものがある。このタイヤは直前までの稼働において、回転に特に重大な支障もなかった様子から、タイヤ真円度として２５ミリ差の場合も許容される範囲と見做し得るが、通常は、タイヤ真円度の許容範囲として実用上支障のない適用範囲は５ｍｍ以下と見做すべきである。
【００３８】
二分割片２，２で接合したタイヤの真円度について実施例から説明する。
図１１及び図１２は、タイヤ分割片２，２の開先形状による接合後の真円度を比較するために使用した支持タイヤをそれぞれ示すもので、図１１は各分割片２，２の接合部開先を本発明によるＨ型状両面開先としたもの、また図１２は各分割片２，２を一般の片側開先である狭開先Ｕ型としたものである。これらの支持タイヤを用いてそれぞれの溶接前及び溶接後におけるタイヤ外径の横軸径（Ｘ）と縦軸径（Ｙ）とを計測したもので、溶接前後の双方向寸法差を表２に示す。
【００３９】
この結果、図１２による片側Ｕ開先としたタイヤでは、開先溶接の収縮応力により開先断面巾が収縮して、その影響でタイヤリングの縦軸径（Ｙ）はマイナス方向に縮径すると共に、反作用により横軸（Ｘ）に直径の膨らみが認められる。この理由は、接合部が片開先であるために収縮力は一方向のみに作用してリング外径を変形させ直径差が７．６ｍｍとなったものであり、前記の真円度の実用許容範囲５ｍｍ以下を超える結果を示したのである。
【００４０】
これに対して、図１１の本発明によるＨ型様の両開先としたタイヤでは、接合溶接においては、内径側のＶ型の開先を溶接することによりタイヤ厚の内径側に発生した収縮力が上記同様に作用する。然しながら、このとき実施例２に記述したタイヤの接触面である開先断面Ｈ字形の横棒部（図５の接触面９）が支点の作用をなして、応力による変形がリング直径の縦軸方向に発生し一旦拡径する現象が起りその直径差は３．０ｍｍを示すものの、この後工程で外径側Ｈ開先を削稜整形して再び溶接するため、このときは内径溶接時の歪み量を吸収する方向に再び収縮力が作用することとなり、内外開先それぞれの収縮量が拮抗して、タイヤリングを原形の真円形状に戻す効果が認められた。
【００４１】
なお、このような溶接の収縮歪み量は内外開先の溶接量に影響されるものである。通常の施工形態としては外径開先の方がやや多くなり、従ってその歪み変形における戻り量も若干大きくなる結果、タイヤは各分割片の接合部開先を通る縦軸方向の直径は若干マイナス気味となり、そのリング外径の双方向における直径差は１．１ｍｍを示した。また、タイヤの接合部において、本例の両面開先とすることで内外の応力による収縮作用を拮抗させる結果、その溶接変形量は矯正される利点があり、前記真円度の許容範囲である５ｍｍ以下に止めることができるのである。
【００４２】
【表２】

【００４３】
（実施例５）
キルンタイヤの素材は、その機械的性質や耐用度並びに経済性などからユーザーが選別採用しており、現状は各種の鋼材質が利用されている。
本発明は、タイヤ各分割片２，２の接合部に沿って、タイヤ厚の内径側に溶接接合用のＶ型の裏開先４が形成され、且つ、このＶ型の裏開先の断面が閉鎖した逆三角形または逆五角形様の窓穴状形態を成して、タイヤ裏面に対してＶの尖端を有するように形成され、この尖端における開先ルート面の高さ５が０．５〜４．５ｍｍの範囲にあることを特徴とするものである。
【００４４】
なお、タイヤ厚の表側開先に対しては、開先溝が表面に開口しているので通常の溶接方法で行うことができ、溶接材料や材質の選定も自由である。これに対して内径側のＶ型の裏開先には、上述の通り溶接材料を自由に選定出来ず特定形態の溶接棒を使用しなければならない。本実施例は図４に示すような内径側閉鎖開先を形成して横置き溶接棒７を使用した場合に、その母材鋼種による溶接接合部の強度特性を調査したものである。
【００４５】
この内径側のＶ型の裏開先４の断面は、閉鎖した窓穴状形態で奥行きが深く、通常形態の溶接方法が適用出来ない形状をなしているため、特殊な被覆形状に加工した横置き溶接棒７を使用するものであることは実施例１に述べた。上述のユーザーが採用するタイヤの各種鋼材質に対し、本発明による内径側の窓穴状Ｖ型の裏開先４を設けて横置き溶接棒７を使用して接合した部分の機械的性質を表３に示す。
【００４６】
この結果、各種材質の母材について横置き溶接棒により突合わせ溶接された溶接部の機械的性質としては、ほぼ母材に近似した値を示しており、タイヤ材質が相違する場合であっても横置き溶接棒を適用することに問題はないことを証するものである。
【００４７】
【表３】

【００４８】
（実施例６）
次に、本発明にかかるロータリーキルン用支持タイヤの装着施工法の好適な実施例について説明する。
図２に示すように、ロータリーキルンの外径よりも若干大径の内径を備えた所要厚、所要幅の鋼製の支持タイヤ１を径方向に二分割した割形と成してタイヤ分割片２，２を形成し所定寸法に仕上加工したのち、先ず該分割片２、２の接合部に沿ってタイヤ厚の内径側に図３及び図４に示す閉鎖した窓穴状Ｖ型の裏開先４を削稜形成する。
【００４９】
このとき、タイヤの肉厚並びにタイヤ取替えの工期等を考慮して、必要により図５に示すタイヤ厚の外径側に開先の断面形状がＨ型状となるように表開先溝８を形成し、或いはまたタイヤの仮組みが行いやすいように図６に示すＨ型状表開先の溝８内に肌合わせダミー１０を挿入して取外し可能なように仮止めしてタイヤ分割片接合部の開先を形成する。
【００５０】
次に、このタイヤ各分割片を解体可能に仮止め接合できるように、両分割片の両端部側面に、突設した仮止め用の有孔突片など適宜の仮止め用締め金具３を取付け、ボルト・ナットにより両分割片２、２を仮止め接合して、例えば図１に示すリング形状の支持タイヤを形成する。
【００５１】
次にこのタイヤを一旦分割解体して、両分割片２，２を図７に示すようにロータリーキルンＫの所要の支持箇所の外周に、タイヤの各分割片の表面肌合わせを正確に行い再度リング形状に仮止め接合して、キルンに嵌め込んだ状態と成したのち、図には示していないが裏開先底の両端に溶接用タブ板を取り付ける。
【００５２】
次いで、図７の両裏開先４，４がキルンの上下に配置されるようにタイヤ１を回動して、タイヤ上側に位置した一方の裏開先４に必要に応じてタイヤ内径面の開先ルートに沿って図８に示す銅製などの裏当て金１１を取付け、横置き溶接棒によりＶ型の裏開先内を溶接したのち、タイヤを１８０゜回動して上側に位置した他方の裏開先４を再び同様の手順で溶接する。
【００５３】
このとき、窓穴状のＶ型の裏開先に対して、装入した横置き溶接棒の操作が可能な範囲で開先内の溶接を行い、開先上部に 空間１２を残した状態で終了する。この内径側の裏開先上部に残った空間１２は、図１０に示すように表開先Ｈ字形の横棒部９を削稜整形したとき表開先溝８と一体に併合形成され、次工程の表開先１３の施工時に完全な溶接が行われる。
【００５４】
しかる後、裏開先の溶接を終えたタイヤ１を回転して図９のように分割片２，２の接合部を水平に配置し、図には示していないがタイヤ寸法を正確に保つため、タイヤの仮止め接合箇所にコ字形のストロングバックを溶接して各接合部を補強すると共に溶接時の拘束とし、仮止め用に突設した締め金具３を切断除去し、タイヤ表開先８内に仮止めした表面肌合わせダミー１０を取り外して、該接合部に沿ってタイヤ厚の外径側に新しい表開先１３，１３を削稜形成する。
【００５５】
引き続いてその配置状態において両表開先１３，１３を同時に溶接した後、補強用に取付けたストロングバックを切断除去し、タイヤ表面並びに両側面の溶接余肉をハンドグラインダー等を用いて研削仕上することにより、キルンＫに対して支持タイヤ１の装着作業を完了する。
【００５６】
なお、上記の実施例において、裏開先４をそれぞれキルンの上側に配置して溶接するのは横置き溶接棒における溶接の容易性に基づくものである。更に、タイヤ分割片２は 施工技術の容易性及び寸法精度の確実性を考慮すれば、二分割タイプが最も好ましいものである。また、実施例には述べていないが、タイヤの装着終了後には溶接接合部の応力除去焼鈍を行うことが必要である。本窯タイヤは極厚肉である処から最終工程の応力除去焼鈍だけでなく、内径側裏開先Ｖの溶接終了後に中間焼鈍を実施して、蓄積した収縮応力の一次開放処理を行うことはタイヤ溶接の歪み変形防止に極めて有効で応力除去効果が倍加する。
【００５７】
【発明の効果】
以上詳述したように本発明は、前記のように構成された特に、大径高負荷のセメント焼成用のロータリーキルン用支持タイヤとその装着方法に係るものであるから、所謂本窯の支持タイヤの取替え装着に対して、これまでまったく採用され得なかった二分割タイヤを直接に本体に取付ける本発明の工法が可能となったことによって、従来のエンドレス状タイヤのようにキルン本体を内装物と共に切断撤去するなどの煩雑にして危険な作業を要することもなく、極めて容易、確実に短期間でタイヤの装着施工を遂行できるものであり、記述した従来の施工法に比べ、施工の能率性に関しては、従来技術の場合はタイヤのみに限らず付帯工事を含めて約６０日間程の長い取替え工期を要するのに対し、これを約１／４程度に大巾に短縮でき、また、経済性に関しては現時点において、従来技術の場合にはタイヤのみでなく耐火レンガその他の内装品の張替等も付帯してくるため数億円という多額の工費を要するのに対して、これをタイヤのみの取替えに限定できるので内装の耐火レンガ等の購入・張替経費が不要となり約１／５程度にまで大巾に減額できる、しかも工期の短縮に基づく工事人件費削減と、特にタイヤ取替え工期中の生産停止による販売製品量への影響などをも総合すると、トータルコストには格段の相違が有ることは容易に理解される処であって、その経済的利益は著しく巨額であり、且つ工事の安全性においても格段に優れた特徴を有するものである。
【図面の簡単な説明】
【図１】本発明のロータリーキルン用支持タイヤの実施例１を示すもので、解体可能に仮止め接合した状態における縦断正面図である。
【図２】その半分割した状態における縦断正面図である。
【図３】その各分割片の接合部を示す拡大縦断正面図である。
【図４】そのＶ型の裏開先の尖端部を示す説明図である。
【図５】本発明のロータリーキルン用支持タイヤの実施例２を示すもので、各分割片の接合部に表開先を設けた縦断正面図である。
【図６】本発明のロータリーキルン用支持タイヤの実施例３を示すもので、各分割片の接合部の表開先溝にダミーを装入した拡大縦断正面図である。
【図７】本発明のロータリーキルン用支持タイヤの装着施工法の実施例を示すもので、開先の溶接工程の説明図である。
【図８】同上の開先の溶接工程の説明図である。
【図９】同上の開先の溶接工程の説明図である。
【図１０】同上の開先の溶接工程の説明図である。
【図１１】本発明の開先を備えたロータリーキルン用支持タイヤの縦断正面図である。
【図１２】従来の開先を備えたロータリーキルン用支持タイヤの縦断正面図である。
【符号の説明】
１ 支持タイヤ
２ 半リング形状の分割片
３ 仮止め用締め金具
４ Ｖ型の裏開先
５ ルート高さ
６ ルート間隔
７ 横置き溶接棒
８ 外径側の開先溝
９ 接触面
１０ 肌合わせダミー
１１ 裏当て金
１２ 空間
１３ 新しい表開先
Ｋ ロータリーキルン[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a rotary kilnforThis is related to the improvement of the mounting method for supporting tires and their rewinding and replacement, especially for large diameter and extremely thickrotaryKilnforThe present invention relates to a support tire and a method of mounting the support tire.
[0002]
[Prior art]
Rotary kilns, which are so-called main kilns for firing cement, ore raw materials, and the like, have a large diameter (for example, φ4000 to 6500 mm) and a large load (for example, 3000 to 6000 ton). Large diameter (for example, φ450-7000mm),Wide (for example, 800-1100 mm) and a very thick (for example, 300-500 mm) heavy product.
[0003]
The first problem with transporting tires is that they need to be replaced. The first problem is the transportation problem. As an integrated tire, road transport is impossible except by sea, so it is close to the raw material mine. Most inland factories adopt a method in which the tire material is split into two parts and brought in, then joined at the local factory to form a ring-integrated product, and then heat treated and machined to finish..Secondly, since the tire is an integral part of the ring, it is necessary to cut and remove the firebricks inside as well as the kiln cell when replacing the tires. Repair is required.
[0004]
In the case of a general small rotary kiln that is not a kiln,WhenSimilarly, in addition to the method of carrying in a ring integrated product, cutting and replacing the kiln body, since the load is not as thick as the kiln, the limitations on finishing accuracy and performance are relaxed, for example, slight welding distortion In order to replace the tire, a method is also adopted in which the tire is divided into two parts, carried in, and directly attached to the kiln body and joined. In most cases in this method, a welded joint having a V-shaped or U-shaped narrow groove on one side is often provided at a tire joint. In this method, welding distortion is biased to one side, and the axis of the tire swings. The problem remains. On the other hand, Japanese Patent No. 1145381 by the present applicant andRegisterAs disclosed in Utility Model No. 1490548, an X-shaped or H-shaped groove is divided into inner and outer diameter sides of the tire thickness in order to reduce the welding distortion.TypeThere is a kiln tire with a groove and a mounting method therefor, but this method also has a problem that an unmelted area is intentionally left in the groove on the inner diameter side.
[0005]
[Problems to be solved by the invention]
When replacing a tire as a single unit, the supporting tire of the rotary kiln must be an endless ring.shapeIn the fitting place, after cutting and removing not only the worn tire but also the refractory bricks of the interior together with the kiln cell, a new tire is fitted into the cut portion to cut the kiln cell. After the joints are repaired, incidental work such as relining of the interior bricks also occurs. For this reason, the replacement work has a serious problem that requires a construction period of several months for one tire and a large cost.
[0006]
Further, in a method in which a two-piece tire is carried in as in a small rotary kiln and is directly attached to the kiln body and joined, for example, depending on the groove shape of the joint, for example, when only one side V-shaped or U-shaped groove is used, welding distortion is caused. Is deviated in one direction, the roundness of the tire ring is deviated, and the shaft center may fluctuate when the kiln rotates.
[0007]
Furthermore, in order to prevent this out-of-roundness, the present applicant has previously developed a method of forming and mounting an X- or H-type double-sided groove in which the groove is divided at the inner and outer diameters of the tire at the joint. Patent No. 1145381 andRegisterIt is disclosed in Utility Model No. 1490548.TechnologyIf there is a protrusion in the gap between the tire and the kiln body, it will hinder the rotation of the kiln, but because the finish processing in the narrow gap between the cell and the tire can not be performed, the weld metal protrudes into the gap between the cell and the tire. An unwelded space is intentionally left in the upper part of the V-shaped groove that opens to the tire inner diameter side so that it does not come out.TechnologyThis is the same problem as the notch defect on the circumference of the tire inner diameter.
[0008]
As described above, any of the adopted tires for replacing the supporting tires of a small kilnTechnologyHowever, there remains a problem that cannot be solved in terms of performance reliability, and it has not been adopted as a support tire for this kiln.
[0009]
The present invention Extra thick for large kiln with large diameter and high loadRotaryKilnFor supportAt the time of tire replacement, the tire is divided into two parts and carried in, and the tire is directly attached to the body without cutting off the kiln body as well as the interior refractory bricks etc. at the fitting point, Maintaining the X-type or H-type groove on both sides of the base material, which is basically required for countermeasures against welding distortion and deformation, and the protrusion of welding back waves on the inner surface of the tire that interferes with kiln rotation Rotary kiln capable of full penetration welding without occurrence of cracks and leaving no unmelted notches or gaps in the groove in tire thicknessforProviding support tires, and also efficient in terms of construction period and cost in replacement, simplified support tires for this kiln that have never been applied beforeWhatWearingConstructionThe purpose is to provide the law.
[0010]
[Means for Solving the Problems]
As a means for solving the above-mentioned problem and achieving the object, the present invention provides a radially divided half.ringA ring that allows disassembly of each shaped tire splitformTemporarily joined in a shaperingFor shape rotary kilnsupportA window hole in which a V-shaped back groove for welding is formed on the inner diameter side of the tire along a joint portion of each split piece, and a cross section of the V-shaped back groove is closed. It is formed to have a V-shaped rear groove tip with respect to the inner surface of the tire, and a groove root surface of a required height is formed at the V-shaped rear groove tip. Support tire for rotary kilns(Claim 1)Is provided.
[0011]
Also, the present inventionIn the support tire for a rotary kiln configured as described above (Claim 1),Along the joint portion of each divided piece, the outer diameter side of the tire has a substantially H-shaped cross-sectional shape as a surface for welding, and a groove on the outer diameter side is formed so as to open to the tire surface. BeenIsIt is intended to provide a support tire for a rotary kiln.
[0012]
Further, the present invention providesIn the support tire for a rotary kiln configured as described above (Claim 1),Along with the joints of the divided pieces, in the open groove of the front surface for welding provided on the outer diameter side of the tire, a skin fitting dummy for surface fitting at the time of temporary assembly of the tire is removably inserted. And are formed by temporary bondingIsIt is intended to provide a support tire for a rotary kiln.
[0013]
In addition, the present invention provides a support tire for a rotary kiln configured as described above, wherein the height of the groove root surface is in the range of 0.5 to 4.5 mm.is thereIt is intended to provide a support tire for a rotary kiln.
[0014]
Furthermore, as a means for solving the above-mentioned problem and achieving the object, the present invention provides a radially divided half.ringForming a V-shaped back groove for welding on the inner diameter side of the tire along the joint of each of the shaped tire split pieces;ringThe divided pieces of each shaped tire are temporarily fixed so that they can be disassembled by appropriateformFor rotary kilnsupportA step of forming a tire, and once the tire is divided and disassembled, each divided piece is ringed along the outer periphery of a required portion of a rotary kiln cell.formThe step of fitting the tire into the rotary kiln by temporarily fixing it again in a shape, and turning the tire so that the groove of the joint of each divided piece is located at the upper part of the cell, the inner diameter side of the tire Window-shaped V formed inBehind the moldA step of sequentially welding the groove, and a step of shaping the front groove for welding on the outer diameter side of the tire along the joint of each split piece of the tire, and then welding each front groove. And a method of mounting a supporting tire for a rotary kiln.
[0015]
In addition, as a means for solving the above-mentioned problems and achieving the object, the present invention provides a radially divided half.ringA ring that allows disassembly of each shaped tire splitformTemporarily joined in a shaperingShaperotaryFor kilnsupporttireInstallation methodForming a front groove having a substantially H-shaped cross section on the outer diameter side of the tire along a joint portion of each divided piece; and a tire provided with the substantially H-shaped front groove. The divided pieces are temporarily fixed and joined by appropriate temporary fixing means so that they can be disassembled.formFor rotary kilnsupportA step of forming a tire, dividing the tire once, disassembling the tire, and ringing the divided pieces along a perimeter of a required portion of a rotary kiln cell.formThe step of fitting the tire into the rotary kiln by temporarily fixing it again in a shape, and turning the tire so that the groove of the joint of each divided piece is located at the upper part of the cell, the inner diameter side of the tire Window-shaped V formed inBehind the moldA step of sequentially welding the groove, and a step of shaping the front groove for welding on the outer diameter side of the tire along the joint of each split piece of the tire, and then welding each front groove. And a method of mounting a supporting tire for a rotary kiln.
[0016]
Further, as a means for solving the above-mentioned problems and achieving the object, the present invention provides a radially-divided halfringA ring that allows disassembly of each shaped tire splitformTemporarily joined in a shaperingShaperotaryKilnFor supporttireInstallation methodA step of forming a groove-shaped open groove for welding and joining on the outer diameter side of the tire along the joint portion of each divided piece, and the tire divided piece is formed by appropriate temporary fixing means. Temporarily fixable joint so that it can be disassembledformFor rotary kilnsupportA dummy for surface matching is removably inserted into the open groove on the front end of the tire, and temporarily attached and joined.formFor rotary kilnsupportA step of forming a tire, dividing the tire once, disassembling the tire, and ringing the divided pieces along a perimeter of a required portion of a rotary kiln cell.formA step of fitting the tire into the rotary kiln by temporarily fixing again in a shape, and turning the tire so that the groove of the joint portion of each divided piece is located at the upper part of the cell, and the inner diameter of the tire thickness V-shaped closed window hole formed on the sideBehind the moldA step of sequentially welding the groove, and disassembling and removing the skin matching dummy inserted in the groove of the front face of the tire, and a front face for welding on the outer diameter side of the tire along the joint of each divided piece. And a step of welding each front opening after shaping the tip, and providing a method of mounting a supporting tire for a rotary kiln.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
The rotary kiln has a structure in which a slight gap is provided between the main body and the supporting tire, and the main body and the tire rotate with a slight gap during operation. For this reason, the support tire is required to have a smooth surface without any protrusions or notches that hinder rotation on the inner diameter surface, and also require a perfect circle.
Further, since the gap between the kiln body and the support tire is narrow, it is impossible to perform any processing operation such as finishing the inner diameter surface after fitting the support tire at a required position. Therefore, when adopting the construction method of dividing and mounting the supporting tire without cutting and removing the cells and interior parts for the kiln, etc., the conditions required for each divided piece of the tire are, first, No protrusions or unmelted areas are formed on the inner diameter surface of the tire joint so that finishing work after joining is not required. Second, there is a groove on both inner and outer diameters of the tire to reduce or prevent distortion deformation of welding. This is to maintain the roundness by dividing. In temporarily assembling the support tire divided into two parts into the main body, a contact surface where each divided piece is in close contact with the joint surface is required in order to perform surface matching while maintaining the accuracy of the circle. The groove on both sides of the mold has the effect of restraining the contraction stress of welding and the role of a fulcrum that is located in the middle of the front and back of the plate thickness and reduces angular deformation. On the other hand, since the V-shaped or U-shaped groove has no such contact surface, it is difficult to suppress the deformation.
[0018]
The present inventors focused on the above two conditions, and joined a two-piece tire that satisfied these two conditions.TechnologyThe gist is described below.
That is, the rotary tire kiln support tire of the present invention is divided into two halves in the radial direction.ringA ring that allows disassembly of tire shaped piecesformTemporarily joined in a shaperingShaperotaryFor kilnsupportAn inverted triangle in which a V-shaped back groove for welding is formed on the inner diameter side of the tire along the joint portion of each split piece, and a cross section of the V-shaped back groove is closed. Or, it is formed so as to have an inverted pentagonal window hole shape and to have a V-shaped rear groove tip with respect to the rear surface of the tire, and the height of the groove root surface at the V-shaped rear groove tip is formed. Is in the range of 0.5 to 4.5 mm.
[0019]
The reason why the groove of the tire joint is limited to the above shape will be described below.
First, the reason for limiting the formation of a closed V-shaped back groove on the inner diameter side of the tire is basically to hold both sides of the groove, and the welding groove is divided into the front and back in the thickness direction of the tire. Finally, as described in Example 4, by performing welding from both sides and antagonizing the contraction stress caused by welding of the inner and outer diameters, it is possible to prevent angular deformation and maintain roundness. Things.
[0020]
The reason why the cross section of the V-shaped back groove has a closed inverted triangular or inverted pentagon-like window hole shape to have a V-shaped back groove tip with respect to the tire back surface is as follows. This is to ensure the smoothness and soundness of the tire inner diameter surface.In the case of a normal groove shape, the weld metal opens to the base metal surface and the weld metal forms an extra thickness protruding from the groove end. Adjust the welding penetration by turning the pointed end of the V-shaped back groove toward the back side of the tire to prevent the protrusion of extra thickness and the formation of unwelded space in the groove that hinders the rotation of the tire. This is because the soundness of the tire inner diameter surface can be maintained.
[0021]
Furthermore, thisV-shaped back grooveThe reason why the height of the groove root surface at the tip of the tire is limited to the range of 0.5 to 4.5 mm is that the penetration of the molten powder at the inner diameter of the tire and the penetration of the Uranami bead are prevented to form a complete penetration. Therefore, as described in Example 1, if the root height of the tip of the V-shaped back groove is less than 0.5 mm, regardless of the route interval and the presence or absence of the backing metal, This is because it is inappropriate because a backwash, that is, a protrusion of the extra thickness occurs. When the route height exceeds 4.5 mm, the unfused region that is poorly fused remains on the groove route surface, which forms a notch on the rear surface of the tire, and there is a concern that the notch may extend into a crack. Is not applicable becauseInterruptionBecause it is done.
[0022]
In the joining of the two-piece tire, when only the V-shaped back groove on the inner diameter side of the tire is not provided with a groove on the outer diameter side, after the joining on the inner diameter side is finished, the outer diameter side of the tire is Using gouging etc. on the front edge Will be formed.
But the above Since gouging involves heat, it is desirable to avoid this work in order to prevent deformation of the tire. In addition to the V-shaped back groove formed on the inner diameter side, a front groove is previously added to the outer diameter side of the tire. By forming the groove on the outer diameter side so as to open to the surface of the tire by forming an H-shaped cross section, as described in Example 2, it is possible to greatly reduce the time for groove preparation, and In addition, it is possible to suppress heat input to the tire material and reduce distortion deformation.
[0023]
【Example】
Hereinafter, several examples of a supporting tire for a rotary kiln according to the present invention and a method of installing the supporting tire will be described.
[0024]
(Example 1)
Figure 1 shows a rotary kilnfor1 shows a first embodiment of a supporting tire,Ring shapedThe support tire 1 is divided into two parts in the radial direction,ringRings that are temporarily fixed so that they can be disassembled by using appropriate temporary fixing fasteners 3 protruding from the side surfaces of both ends of the divided pieces 2 and 2 having the shape.formIn the figure, a supporting tire 1 having a required thickness and a required width and having an inner diameter slightly larger than the outer diameter of the rotary kiln is formed, and the supporting tire 1 is radially divided into two parts. 3 and 4 along the joints of the tire split pieces 2 and 2 on the inner diameter side of the tire, and the sectional shape shown in FIGS. Equipped with a back groove 4 for welding the moldrotaryKilnforIt constitutes a supporting tire.
[0025]
FIG. 3 shows a cross-sectional shape of a back groove provided on the inner diameter side of the tire. A V-shaped back surface for welding is provided on the inner diameter side of the tire along the joint of each of the divided pieces 2 and 2 of the tire. A groove 4 is formed, and the cross section of the V-shaped back groove 4 forms a closed inverted triangular or inverted pentagon-like window hole shape, and the V-shaped back groove is formed with respect to the rear surface of the tire.4And the groove root surface at this point is formed such that the root height 5 shown in the enlarged view 4 is in the range of 0.5 to 4.5 mm,rotaryKilnforIt constitutes a supporting tire.
[0026]
V-shaped back groove4The groove root height 5 at the point of the tip maintains full penetration in the groove without leaving a non-melted area of welding on the root surface, and does not cause extraneous protrusion of the uranami bead to the tire back surface. An appropriate route height is required, and that route height5Is determined according to the state of welding penetration at the tip of the groove, and when the root interval 6 is less than 1.5 mm shown in Table 1, and when 1.5 to 3 mm, the root height is By changing No. 5, the range was determined so as to show appropriate penetration in each case.
[0027]
This makes the V-shaped back groove4Root height of the tip5Is less than 0.5 mm, regardless of the route interval and the presence or absence of the backing metal, it is found to be inappropriate because a backwash, that is, a protrusion of the extra thickness occurs on the back surface of the groove. Similarly, when the root height 5 exceeds 4.5 mm, it is confirmed that an unmelted region remains on the groove root surface, which forms a notch on the back surface of the tire, which is obviously not applicable. It has become.
[0028]
V-shaped back groove on the inner diameter side of the tire according to this embodiment4However, the conventional method of welding cannot be applied because the shape is closed and the depth is deep. Therefore, this tire inner diameter~ sideofbackFor welding the groove 4, a horizontal welding rod 7 capable of performing the welding operation with the welding rod laid down in the horizontal direction is used. The welding rod 7 is formed by processing the coating into a special shape, and in a horizontal state, the welding arc is correctly directed and held downward, so that the lower portion is normally welded.
[0029]
It was divided into two by constructing it in the range of the groove route height 5 determined by this example.rotaryKilnFor supportAt the joint of the tire, the weld bead is left in the gap between the tire inner diameter surface and the cell, which cannot be finished because it is originally narrow and does not leave a weld unmelted area regarded as a notch-like defect in the weld groove. This makes it possible to form a smooth inner diameter surface without protruding excess thickness.
[0030]
[Table 1]

[0031]
(Example 2)
FIG. 5 shows a second embodiment of a support tire for a rotary kiln according to the present invention, and shows the shape of the front groove on the outer diameter side of the tire. In addition to the V-shaped back groove 4 provided on the inner diameter side of the tire along the portion, the H-shaped cross section is used as a welding groove on the outer diameter side of the tire thickness. Groove 8 is formed so as to open on the tire surface,rotaryKilnforIt constitutes a supporting tire.
Generally, as a method of reducing angular deformation in butt welding, a double groove (for example, X-type or H-type) in which the groove is divided into front and rear sides is more effective than a single groove (for example, U-type or V-type). Is well known.
[0032]
Further, when the two-piece tire is temporarily assembled to the kiln body, each of the split pieces 2 and 2 has a contact surface that is in close contact with the joining surface,Ring shapedtireofThis facilitates surface matching while maintaining roundness. In the case of X-type or H-type grooves, this contact surface 9 located at the center of the groove serves as a restraint portion against contraction stress of welding, It also serves as a fulcrum between the front and back sides of the plate thickness and antagonizes the contraction force generated as described later in Example 4, resulting in an effect of reducing angular deformation.
[0033]
In this embodiment, in addition to the groove shape of the first embodiment, the cross-sectional shape of the groove portion on the outer diameter side of the tire is H-shaped so as to maintain the basic both grooves in such welding. The groove 8 is formed so as to open on the surface of the tire outer diameter. The H-shaped groove shown in this embodiment is the inner diameter side of the first embodiment.ofVTypeIn the process after welding the groove, it is possible to greatly reduce the trouble of beveling the outer diameter side of the tire by gouging etc., and further reduce the amount of fusing work involving high heat at the tire joint, An H-shaped groove is formed in advance for the purpose of reducing the amount of heat input and distortion deformation caused by the effect.
[0034]
(Example 3)
FIG. 6 schematically illustrates a third embodiment of a rotary kiln support tire according to the present invention. The H-shaped groove provided at the tire joint described in the second embodiment further includes a tire outer diameter side. The dummy 10 is separately inserted into the groove 8 which is separately formed and is temporarily fixed so as to be removable.
[0035]
When temporarily assembling each of the split pieces 2 and 2 of the tire at the required location in the kiln body,Groove 85 has an inconvenience such as difficulty in obtaining the dimensional accuracy due to difficulty in matching the surface of the ring-shaped tire to the surface of the tire. The dummy 10 is inserted into the groove 8 and temporarily fixed so as to be removable. This makes it easier to fit the temporary assembly when attaching the kiln body of the two-piece tire, shortening the working time and construction period, and also has the effect of playing the role of constraint in welding the joint of the split tire, and has the effect of distortion deformation. It also works effectively for prevention.
[0036]
(Example 4)
Generally, a rotary kiln has a gap, that is, a clearance, without fixing a tire to a cell that is a main body. Normally, a steel floor plate is fixed at an appropriate interval on the outer periphery of the cell where the tire is to be fitted, and a clearance is provided between the floor plate and the tire, with a slight rotational displacement between the two. , Smooth kiln rotation is maintained. The clearance absorbs the expansion and expansion of the cell during heating of the kiln, and allows smooth operation without damaging the cell or tire.ZAn appropriate gap is set in a range of, for example, 2 to 8 mm so that a proper kiln rotation is maintained. For this reason, the tire ring is required to be a perfect circle, but it has been used for many years.rotaryKilnFor supportSome tires have been deformed into elliptical shapes due to repeated repairs and aging.
[0037]
Actually, as an example of deformed tire, it was removed for replacement due to aging and wearrotaryKilnFor supportWhen the diameter of the tire was actually measured, a difference of 25 mm in the two-directional diameter (XY) of the tire was confirmed. Since this tire did not cause any serious trouble in rotation in the operation immediately before, it can be considered that a tire roundness difference of 25 mm is within the allowable range. Should be considered to be 5 mm or less.
[0038]
The roundness of a tire joined by the two divided pieces 2, 2 will be described from an example.
11 and 12 show supporting tires used to compare the roundness of the tire divided pieces 2 and 2 after joining based on the groove shape, respectively. FIG. 11 shows the joining of the divided pieces 2 and 2. FIG. 12 shows an H-shaped double-sided groove according to the present invention, and FIG. 12 shows each of the divided pieces 2 and 2 formed as a generally narrow-sided U-shaped groove. Using these support tires, the horizontal axis diameter (X) and the vertical axis diameter (Y) of the tire outer diameter before and after welding were measured, and the bidirectional dimensional difference before and after welding is shown in Table 2. Show.
[0039]
As a result, in the tire with one side U groove as shown in FIG. 12, the groove cross-sectional width shrinks due to the contraction stress of groove welding, and the longitudinal diameter (Y) of the tire ring is reduced in the minus direction due to the effect. At the same time, the swelling of the diameter is recognized on the horizontal axis (X) due to the reaction. The reason for this is that the contraction force acts only in one direction and deforms the outer diameter of the ring and the difference in diameter becomes 7.6 mm because the joint is a one-sided groove. The result exceeded the allowable range of 5 mm or less.
[0040]
On the other hand, in the tire having the H-shaped double groove according to the present invention shown in FIG.TypeBy contracting the groove, the contraction force generated on the inner diameter side of the tire thickness acts as described above. However, at this time, a horizontal bar portion having an H-shaped groove section as a contact surface of the tire described in Example 2 (FIG. 5)Contact surface9) acts as a fulcrum, and deformation due to stress occurs in the direction of the longitudinal axis of the ring diameter and a phenomenon occurs in which the diameter temporarily expands, and the diameter difference shows 3.0 mm. Since the tip is shaved and welded again, in this case, the contraction force acts again in the direction of absorbing the distortion amount during the inner diameter welding, the contraction amounts of the inner and outer grooves are opposed, and the tire ring is removed. The effect of returning to the original perfect circular shape was recognized.
[0041]
The amount of shrinkage distortion of such welding is affected by the amount of welding between the inner and outer grooves. As a normal construction form, the outer diameter groove is slightly larger, so the amount of return in the strain deformation is slightly larger, and as a result, the tire has a slightly minus diameter in the vertical direction passing through the joint groove of each divided piece. The ring had a slight difference in diameter in both directions of the ring outer diameter of 1.1 mm. In addition, in the joint portion of the tire, by using the two-sided groove of the present example to antagonize the shrinkage action due to the internal and external stresses, there is an advantage that the amount of welding deformation is corrected, which is within the allowable range of the roundness. It can be kept below 5 mm.
[0042]
[Table 2]

[0043]
(Example 5)
Kiln tire materials are selected and adopted by users in view of their mechanical properties, durability and economy, and various steel materials are currently used.
The present invention provides a V-shaped back groove for welding joint along the joint portion of each of the tire split pieces 2 and 2 on the inner diameter side of the tire thickness.4Is formed, and the V-shapedBack ofThe cross section of the groove is in the form of a closed inverted triangle or inverted pentagon-like window hole, and is formed so as to have a V-shaped tip with respect to the rear surface of the tire. It is characterized by being in the range of 0.5 to 4.5 mm.
[0044]
The groove on the front side of the tire thickness can be formed by a normal welding method since the groove is open on the surface, and the welding material and material can be freely selected. On the other hand,ofVBehind the moldAs described above, the welding material cannot be freely selected for the groove, and a specific form of welding rod must be used. In this embodiment, when a horizontal welding rod 7 is used by forming an inner diameter side closed groove as shown in FIG. 4, the strength characteristics of a welded joint by its base steel type are investigated.
[0045]
This inner diameter sideV-shaped back groove 4The cross-section of the cross-section is a closed window hole and has a depth that is too deep to apply to the conventional welding method.7Is described in Example 1. For the various steel materials of the tires adopted by the above users, the inner diameter side according to the present inventionWindow-shaped V-shaped back groove 4Provide horizontal welding rod7Table 3 shows the mechanical properties of the parts joined by using.
[0046]
As a result, the base materials of various materials are butted by the horizontal welding rod.LetThe mechanical properties of the welded parts show values almost similar to the base metal.,This proves that there is no problem in applying the horizontal welding rod even when the tire materials are different.
[0047]
[Table 3]

[0048]
(Example 6)
Next, a description will be given of a preferred embodiment of a method for mounting a supporting tire for a rotary kiln according to the present invention.
As shown in FIG. 2, a steel supporting tire 1 having a required thickness and a required width having an inner diameter slightly larger than the outer diameter of the rotary kiln.ToAfter forming the tire split pieces 2 and 2 into a split shape divided into two in the radial direction and finishing it to predetermined dimensions, first, the split piecesTwo, two3 and FIG. 4 show a closed window-hole V-shaped groove on the inner diameter side of the tire thickness along the joint of FIG.4Is formed.
[0049]
At this time, in consideration of the thickness of the tire and the construction period of tire replacement, etc., the front groove 8 is formed on the outer diameter side of the tire thickness as shown in FIG. The H-shaped front groove shown in FIG. 6 is formed so as to facilitate formation or temporary assembly of the tire.8The dummy 10 is inserted into the inside and temporarily fixed so that it can be removed to form a groove at the joint of the tire split pieces.
[0050]
Next, in order to be able to temporarily disassemble and joint each split piece of the tire, an appropriate temporary protruding perforated protruding piece is provided on both end side faces of both split pieces.StopAttachment fastener 3 and split both parts with bolts and nutsTwo, twoTemporarily join theFor exampleRing shown in Figure 1formTo form a support tire in the shape of a circle.
[0051]
Next, the tire is once divided and disassembled, and both divided pieces 2 and 2 are accurately aligned with the outer surface of a required supporting portion of the rotary kiln K as shown in FIG.formAfter being temporarily fixed and joined to the kiln, a welding tab plate is attached to both ends of the back groove bottom (not shown).
[0052]
Next, the tire 1 is rotated so that the two back grooves 4 and 4 in FIG. 7 are arranged above and below the kiln, and if necessary, the one back groove 4 located on the upper side of the tire has A backing metal 11 made of copper or the like shown in FIG. 8 is attached along the groove route, and VBehind the moldAfter the inside of the groove is welded, the tire is turned by 180 ° and the other back groove 4 located on the upper side is again welded in the same procedure.
[0053]
At this time, the window hole shapeV-shaped backWeld within the groove to the extent that the inserted horizontal welding rod can be operated. The process ends with the space 12 left. This inner diameter sideBack ofAs shown in FIG. 10, the space 12 left at the top of the groove has a front groove when the front bar H-shaped horizontal bar portion 9 is cut and shaped.groove8 and is integrally formed, and complete welding is performed at the time of construction of the front opening 13 in the next process.
[0054]
Thereafter, the tire 1 after welding of the back groove is rotated to arrange the joints of the divided pieces 2 and 2 horizontally as shown in FIG. 9 and not shown in the figure to maintain the tire dimensions accurately. Then, a U-shaped strong back is welded to the temporarily fixed joint of the tire to reinforce each joint and to be a constraint at the time of welding, and the fastener 3 protruded for temporary fixing is cut and removed. The surface matching dummy 10 temporarily fixed inside is removed, and new front gaps 13 are formed along the joint on the outer diameter side of the tire thickness.
[0055]
Subsequently, in the disposition state, both front gaps 13 and 13 are welded at the same time, and then the strong back attached for reinforcement is cut and removed, and the excess welding thickness on the tire surface and both side surfaces is ground using a hand grinder or the like. Thus, the operation of mounting the support tire 1 on the kiln K is completed.
[0056]
In the above-mentioned embodiment, the reason why the back grooves 4 are arranged above the kiln and welded is based on the ease of welding with the horizontal welding rod. Further, the tire split piece 2 Considering the ease of construction technology and the certainty of dimensional accuracy, the two-piece type is the most preferable. Although not described in the examples, it is necessary to perform stress relief annealing of the welded joint after the tire has been mounted. This kiln tire is not only able to perform stress relief annealing in the final step from the place where it is extremely thick, but also to perform intermediate annealing after the welding of the inner side back groove V is completed to perform the primary release processing of the accumulated contraction stress. It is extremely effective in preventing distortion deformation of tire welding and doubles the stress relief effect.
[0057]
【The invention's effect】
As described in detail above, the present invention is configured as described above.In particularFor large diameter and high load cement firingofRotary kilnforSince the present invention relates to the supporting tire and the method of mounting the same, the method of the present invention for directly mounting a two-piece split tire, which could not be adopted at all, directly to the main body is possible for replacement mounting of the so-called main kiln supporting tire. As a result, the tire installation work can be performed very easily and reliably in a short period of time without the need for complicated and dangerous work such as cutting and removing the kiln body together with the interior material like conventional endless tires Compared with the described conventional construction method,TechnologyIn the case of, not only tires but also long replacement period of about 60 days including incidental work are required, but this can be shortened to about 1/4, and economical ConventionalTechnologyIn the case of, not only tires but also replacement of refractory bricks and other interior accessories etc. are accompanied, so a large construction cost of several hundred million yen is required, but this can be limited to replacing only tires, so There is no need to purchase or replace refractory bricks, so the cost can be greatly reduced to about 1/5. In addition, the construction labor cost can be reduced based on the shortened construction period, and the sales volume can be reduced especially due to the suspension of production during the tire replacement period. It is easy to understand that the total cost is significantly different when the effects of the above are combined, and the economic benefits are remarkably huge and the safety of the construction is much better. It has features.
[Brief description of the drawings]
FIG. 1 of the present invention.rotary1 is a longitudinal sectional front view showing a first embodiment of a kiln support tire, in a state where the tire is temporarily joined so that it can be disassembled.
FIG. 2 is a longitudinal sectional front view in a half-split state.
FIG. 3 is an enlarged vertical sectional front view showing a joint portion of each divided piece.
FIG. 4 is an explanatory view showing the pointed end of the V-shaped back groove.
FIG. 5 of the present invention.rotaryIt is Example 2 of the support tire for kilns, It is a longitudinal front view in which the front part was provided in the joint part of each division | segmentation piece.
FIG. 6 of the present invention.rotaryIt is Example 3 of the support tire for kilns, and is an expanded longitudinal sectional front view in which a dummy was inserted into a front groove at a joint portion of each divided piece.
FIG. 7 of the present invention.rotaryIt is an explanatory view of an example of a method of mounting and mounting a support tire for a kiln, and illustrating a welding process of a groove.
FIG. 8 is an explanatory diagram of a groove welding step of the above.
FIG. 9 is an explanatory diagram of a groove welding process of the groove.
FIG. 10 is an explanatory view of a groove welding step of the above.
FIG. 11 is provided with a groove of the present invention.rotaryIt is a vertical front view of the support tire for kilns.
FIG. 12 is provided with a conventional groove.rotaryIt is a vertical front view of the support tire for kilns.
[Explanation of symbols]
1 Support tire
Two and a halfringShape split pieces
3 Temporary fasteners
4 V-shaped back groove
5 route height
6 route intervals
7 Horizontal welding rod
8 Groove groove on the outer diameter side
9 Contact surface
10 Skin matching dummy
11 Backing money
12 Space
13 new frontiers
K rotary kiln

Claims (7)

Each tire divided pieces of half-ring shape obtained by halving radially demountable in a ring shape a rotary kiln supporting tires temporarily fixed joining the ring-shaped along the junction of the respective segments, the inner diameter of the tire A V-shaped back groove for welding is formed on the side, and the cross section of the V-shaped back groove forms a closed window hole shape, and the V-shaped back groove is formed on the inner surface of the tire. A support tire for a rotary kiln, characterized in that a groove root surface of a required height is formed at the point of the V-shaped back groove. Along the joint of each of the divided pieces, on the outer diameter side of the tire, a sectional shape is substantially H-shaped as a surface for welding, and a groove on the outer diameter side is formed so as to open to the tire surface. The support tire for a rotary kiln according to claim 1 . Along with the joints of the divided pieces, in the open groove of the front surface for welding provided on the outer diameter side of the tire, a skin fitting dummy for surface fitting at the time of temporary assembly of the tire is removably inserted. The support tire for a rotary kiln according to claim 1, wherein the support tire is formed by temporary fixing. The support tire for a rotary kiln according to any one of claims 1, 2, and 3, wherein the height of the groove root surface is in a range of 0.5 to 4.5 mm. Along the joint portion of the tire divided piece of the two-split half-ring shape in the radial direction, forming a V-shaped UraHiraki destination for welding on the inner diameter side of the tire, each tire of the semi-ring-shaped the divided pieces, and demountable provisionally stop engagement by a suitable temporary bonding means, and forming a rotary kiln supporting tires ring shape, after once divided dismantling the tire, the outer circumference of the predetermined position of the cell in the rotary kiln along the steps Komu fitting the tire to the rotary kiln the divided pieces were temporarily fixed joined again in a ring shape, the tire rotates, the position at the top of the cell groove of the joint of the divided pieces in a state of being, a step of welding the back groove of the closed window hole shape of V type are formed on the inner diameter side of the tire sequentially, along the junction of the respective segments of the tire, the tire The front surface for welding on the outer diameter side After ridge shaped mounting construction methods of supporting a tire for a rotary kiln, characterized in that comprising a step of welding the KakuhyoHiraki destination. A mounting method of applying the support tires rotary kiln temporary bonding the joined ring-shaped demountable ring-shape each tire divided pieces of half-ring shape obtained by halving in the radial direction, along the junction of the respective segments Forming a front groove having a substantially H-shaped cross section on the outer diameter side of the tire, and disassembling the divided pieces of the tire having the substantially H-shaped front groove by appropriate temporary fixing means. movable to and temporarily fixed joining, forming a rotary kiln supporting tires ring shape, the tire, once along the outer periphery of the predetermined position of the cell in the rotary kiln After dividing disassembled, respective segments of the ring shape And temporarily fitting the tire to the rotary kiln again, and turning the tire so that the groove of the joint of each divided piece is located at the upper part of the cell, and on the inner diameter side of the tire. Formed closure A step of sequentially welding the back groove of a window hole-like V-type were, along the junction of the respective segments of the tire, after Kezuryo shaping OmoteHiraku destination for welding to the outer diameter side of the tire And welding each of the front gaps. A mounting method of applying the support tires rotary kiln temporary bonding the joined ring-shaped demountable ring-shape each tire divided pieces of half-ring shape obtained by halving in the radial direction, along the junction of the respective segments Te, forming a groove-shaped OmoteHiraku destination which is open for welding to the outer diameter side of the tire, the tire divided pieces, and demountable provisionally stop engagement by a suitable temporary bonding means, a ring shape a step to be capable of charging remove the skin alignment dummy for surface aligned with the open groove of OmoteHiraku destination of the rotary kiln supporting tires, and temporarily fixed joint, to form a rotary kiln supporting tires ring shape, this tires, once along the outer periphery of the predetermined position of the cell in the rotary kiln After dividing dismantling the steps Komu fitting the tire to the rotary kiln the divided pieces were temporarily fixed joined again in a ring shape, the tire And moving, in a state in which the groove of the joint was positioned at the top of the cell of the divided pieces, sequentially the back groove of the closed window hole shape of V type are formed on the inner diameter side of the tire thickness Welding process and disassembling and removing the skin matching dummy inserted into the groove of the front of this tire and shaping the front groove for welding on the outer diameter side of the tire along the joint of each divided piece And then welding each of the facings. A method for mounting a supporting tire for a rotary kiln, comprising:

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