JP3909221B2

JP3909221B2 - Jet fan support structure

Info

Publication number: JP3909221B2
Application number: JP2001169101A
Authority: JP
Inventors: 実鈴木
Original assignee: 株式会社電業社機械製作所
Priority date: 2001-06-05
Filing date: 2001-06-05
Publication date: 2007-04-25
Anticipated expiration: 2021-06-05
Also published as: JP2002364300A

Description

【０００１】
【発明の属する技術分野】
本発明は、道路トンネルのトンネル天井壁に吊り下げて設置されるジェットファンが運転中に揺動しないようにしたジェットファンの支持構造に関するものである。
【０００２】
【従来の技術】
道路トンネル内の換気を行うために、道路トンネルのトンネル天井壁にジェットファンが吊り下げて設置される。このジェットファンを吊り下げて設置するための従来のジェットファンの支持構造の一例を、図１０ないし図１２に示す。図１０は、従来のジェットファンの支持構造の一例を軸方向に見た図である。図１１は、従来のジェットファンの支持構造の一例を円筒状ケーシングを横方向から見た図である。図１２は、従来の連結部材の一例の構造を示す図である。図１０ないし図１２において、ジェットファン１０の円筒状ケーシング１２の軸方向中央部で軸方向に見て両側でそれぞれ軸方向にずらして２ヶ所の側部外壁に側部支持部材１４ａ，１４ｂ，１４ｃ，１４ｄがそれぞれ設けられ、これらの略上方位置または軸方向に見て略逆ハ字状の斜め上方位置のトンネル天井壁１６に側部吊持部材１８ａ，１８ｂ，１８ｃ，１８ｄがそれぞれ設けられる。そして、対応する側部支持部材１４ａ，１４ｂ，１４ｃ，１４ｄと側部吊持部材１８ａ，１８ｂ，１８ｃ，１８ｄが、連結部材２０ａ，２０ｂ，２０ｃ，２０ｄでそれぞれ連結される。また、円筒状ケーシング１２の軸方向両端部の端部外壁の頂部に頂部支持部材２２ａ，２２ｂがそれそれ設けられ、円筒状ケーシング１２を横方向から見て、これらの頂部支持部材２２ａ，２２ｂの略逆ハ字状の斜め上方位置のトンネル天井壁に頂部吊持部材２４ａ，２４ｂがそれぞれ設けられる。そして、対応する頂部支持部材２２ａ，２２ｂと頂部吊持部材２４ａ，２４ｂがそれぞれ連結部材２６ａ，２６ｂでそれぞれ連結される。連結部材２０ａ，２０ｂ，２０ｃ，２０ｄ，２６ａ，２６ｂは、両端に雌ネジが設けられたロッド状部材３０とこの雌ネジに螺合する雄ネジを一端側に設けた結合部材３２，３４とで形成される。結合部材３２，３４の一例は、アイボルトや一端側に雄ネジが刻設され他端側がシャックル状とされたものである。そこで、連結部材２０ａ，２０ｂ，２０ｃ，２０ｄは長さ調節が可能であり、調整後は長さ方向へ伸縮しない剛体として作用する。
【０００３】
かかる従来のジェットファンの支持構造にあっては、ジェットファン１０の円筒状ケーシング１２の軸方向中央部の側部外壁に連結される連結部材２０ａ，２０ｂ，２０ｃ，２０ｄにより主としてジェットファン１０の重量が支持され、円筒状ケーシング１２の軸方向両端部の端部外壁に連結されて、円筒状ケーシング１２を横方向から見て逆ハ字状に斜めに張架される連結部材２６ａ，２６ｂにより、ジェットファン１０が軸方向に揺動するのが規制される。
【０００４】
【発明が解決しようとする課題】
ところで、ジェットファン１０が運転されると、羽根車の回転により推力が発生し、これに起因して、円筒状ケーシング１２の軸方向両端部が軸方向に前後動するのみならず軸方向に見て左右の両側に揺動するような力が作用する。すなわち、円筒ケーシング１２を上または下から見ると、その両端部が略８の字状に動く現象が生ずる。
【０００５】
そこで、従来の支持構造にあっては、端部外壁に連結される連結部材２６ａ，２６ｂにより、軸方向に前後の動きは規制できるが、軸方向に見て左右の動きを規制することができない。この結果、側部吊持部材１８ａ，１８ｂ，１８ｃ，１８ｄと頂部吊持部材２４ａ，２４ｂと側部支持部材１４ａ，１４ｂ，１４ｃ，１４ｄおよび頂部支持部材２２ａ，２２ｂと、連結部材２０ａ，２０ｂ，２０ｃ，２０ｄ，２６ａ，２６ｂとの連結部の当接部分の摩耗や疲労が進行して、連結部の損傷を招じかねない。また、円筒状ケーシング１２の両端部が軸方向に見て左右に揺動することで、側部吊持部材１８ａ，１８ｂ，１８ｃ，１８ｄと側部支持部材１４ａ，１４ｂ，１４ｃ，１４ｄとを連結する連結部材２０ａ，２０ｂ，２０ｃ，２０ｄには繰り返して捩り荷重が作用し、金属疲労を生じさせ易い。最悪の場合には、ジェットファン１０がトンネル天井壁１６から脱落して重大な事故を発生させる虞がある。
【０００６】
本発明は、上述のごとき従来技術の不具合を改善すべくなされたもので、ジェットファンの円筒状ケーシングの揺動を確実に規制するようにしたジェットファンの支持構造を提供する。
【０００７】
【課題を解決するための手段】
かかる目的を達成するために、本発明のジェットファンの支持構造は、ジェットファンの円筒状ケーシングの軸方向中央部で前記軸方向に見て両側にそれぞれ１ヶ所以上の側部外壁と、これらの側部外壁の略上方位置または前記軸方向に見て略逆ハ字状の上方位置のトンネル天井壁とを連結部材でそれぞれ連結し、前記円筒状ケーシングの軸方向両端側の端部外壁と前記トンネル天井壁とを、前記軸方向に見て略Ｖ字状または略逆ハ字状であるとともに前記円筒状ケーシングを横方向から見て斜めの連結部材でそれぞれ連結して構成されている。
【０００８】
そして、前記円筒状ケーシングの軸方向両端側の端部外壁と前記トンネル天井壁とを、前記略Ｖ字状または略ハ字状であるとともに斜めの前記連結部材とは別に、前記斜めと垂直面を挟んで反対側に斜めの連結部材でそれぞれ連結して構成しても良い。
【０００９】
また、前記トンネル天井壁に配設され前記側方外壁と前記連結部材で連結される吊持部材に、前記端部外壁に一端が連結されて略Ｖ字状または略逆ハ字状の前記連結部材の他端をそれぞれ連結して構成しても良い。
【００１０】
さらに、前記端部外壁と前記トンネル天井壁とを、前記軸方向に見て略Ｖ字状または略逆ハ字状に連結する前記連結部材を、ワイヤーロープとターンバックルを含んで構成することもできる。
【００１１】
【発明の実施の形態】
以下、本発明の第１実施例を図１ないし図３を参照して説明する。図１は、本発明のジェットファンの支持構造の第１実施例を軸方向に見た図である。図２は、本発明のジェットファンの支持構造の第１実施例を円筒状ケーシングを横方向から見た図である。図３は、本発明の連結部材の一例の構造を示す図である。図１ないし図３において、図１０ないし図１２と同じまたは均等な部材には同じ符号を付けて重複する説明を省略する。。
【００１２】
図１ないし図３に示す本発明の第１実施例において、図１０ないし図１２に示す従来例と相違するところは、以下の通りである。従来例の構造に加えて、一方の頂部支持部材２２ａとこれに近い側のトンネル天井壁１６の側部吊持部材１８ａ，１８ｃが新たな連結部材４０ａ，４０ｃで連結される。また、他方の頂部支持部材２２ｂとこれに近い側のトンネル天井壁１６の側部吊持部材１８ｂ，１８ｄが新たな連結部材４０ｂ，４０ｄで連結される。これらの新たに加えられた連結部材４０ａ，４０ｂ，４０ｃ，４０ｄの構造は、図３（ａ）に示すごとく、ワイヤーロープ４２とターンバックル４４とシャックル４６，４６…により形成される。そこで、頂部支持部材２２ａ，２２ｂと、側部吊持部材１８ａ，１８ｂ，１８ｃ，１８ｄの間に、適宜にターンバックル４４を調整することでその長さを調整して適宜な張力で張架することができる。また、新たな連結部材４０ａ，４０ｂ，４０ｃ，４０ｄが連結される頂部支持部材２２ａ，２２ｂおよび側部吊持部材１８ａ，１８ｂ，１８ｃ，１８ｄには、図３（ｂ）に示すごとく、従来の連結部材２０ａ，２０ｂ，２０ｃ，２０ｄが連結される孔３４とは別に孔３６が穿設される。
【００１３】
かかる構成の第１実施例において、軸方向から見て、新たな連結部材４０ａ，４０ｃおよび４０ｂ，４０ｄは頂部支持部材２２ａ，２２ｂを折り返しとする略Ｖ字状に張架されている。また、円筒状ケーシング１２を横方向から見て、頂部支持部材２２ａ，２２ｂに従来から連結される斜めの連結部材２６ａ，２６ｂに対して、新たに設けられた連結部材４０ａ，４０ｃ，４０ｂ，４０ｄは垂直面を挟んで反対側に斜めで張架される。
【００１４】
そこで、円筒ケーシング１２の端部外壁に設けられた頂部支持部材２２ａ，２２ｂは、連結部材２６ａ，４０ａ，４０ｃと２６ｂ，４０ｂ，４０ｄの３本でそれぞれ固定される。この結果、円筒ケーシング１２の両端が軸方向の前後および上下ならびに左右のいずれの動きも規制される。
【００１５】
したがって、連結部の当接部分の摩耗や疲労がなく、また主としてジェットファンの動きを支持する連結部材２０ａ，２０ｂ，２０ｃ，２０ｄに捩りが作用せず、金属疲労を生じることもない。そして、ワイヤーロープ４２とターンバックル４４などにより形成される連結部材４０ａ，４０ｂ，４０ｃ，４０ｄは、重量も小さく、その張架作業が容易である。そこで、従来ジェットファンの支持構造に対しても容易に改善がなし得る。なお、従来の連結部材２０ａ，２０ｂ，２０ｃ，２０ｄ，２６ａ，２６ｂの連結する孔３４とは別に、新たな連結部材４０ａ，４０ｂ，４０ｃ，４０ｄの連結する孔３６を設けることで、連結部材が相互に当接摩耗するようなこともない。
【００１６】
次に、本発明の第２実施例を図４および図５を参照して説明する。図４は、本発明のジェットファンの支持構造の第２実施例を軸方向に見た図である。図５は、本発明のジェットファンの支持構造の第２実施例と円筒状ケーシングを横方向から見た図である。図４および図５において、図１ないし図３と同じまたは均等な部材には同じ符号を付けて重複する説明を省略する。
【００１７】
図４および図５に示す本発明の第２実施例において、図１ないし図３に示す本発明の第１実施例と相違するところは、以下の通りである。まず、頂部吊持部材２４ａ，２４ｂとこれに連結する連結部材２６ａ，２６ｂが省かれている。そこで、頂部支持部材２２ａと２２ｂには、連結部材４０ａ，４０ｃと４０ｂ，４０ｄのみがそれぞれ連結される。
【００１８】
かかる構成の第２実施例において、連結部材４０ａ，４０ｃと４０ｂ，４０ｄは、それぞれ頂部支持部材２２ａと２２ｂを折り返しとする略Ｖ字状である。また、円筒状ケーシング１２を横方向から見て、連結部材４０ａ，４０ｃと４０ｂ，４０ｄは略ハ字状にそれぞれ斜めに張架される。
【００１９】
そこで、円筒状ケーシング１２の両端部の軸方向の前後と上下さらには左右の動きが、連結部材４０ａ，４０ｃと４０ｂ，４０ｄでそれぞれ規制される。したがって、連結部の当接部分に摩耗や疲労を生じない。また、連結部材２０ａ，２０ｂ，２０ｃ，２０ｄに捩りが作用せず、金属疲労を生ずることもない。そして、連結部材２６ａ，２６ｂを省略することで構造が簡単になるとともに、ジェットファン１０の設置作業も容易となる。
【００２０】
また、本発明の第３実施例を図６および図７を参照して説明する。図６は、本発明のジェットファンの支持構造の第３実施例を軸方向に見た図である。図７は、本発明のジェットファンの支持構造第３実施例を円筒状ケーシングを横方向から見た図である。図６および図７において、図１ないし図５と同じまたは均等な部材には同じ符号を付けて重複する説明を省略する。
【００２１】
図６および図７に示す本発明の第３実施例において、図１ないし図３に示す本発明の第１実施例と相違するところは、以下の通りである。まず、ジェットファン１０の円筒状ケーシング１２の軸方向中央に軸方向に見て両側の１ヶ所ずつの側部外壁に側部支持部材１４ａ，１４ｃがそれぞれ設けられ、これらの略上方または軸方向に見て略逆ハ字状の斜め上方位置のトンネル天井壁１６に側部吊持部材１８ａ，１８ｃが設けられる。そして、対応する側部支持部材１４ａ，１４ｃと側部吊持部材１８ａ，１８ｃが連結部材２０ａ，２０ｃでそれぞれ連結される。この連結部材２０ａ，２０ｃで、ジェットファン１０の重さが主に支持される。そして、頂部支持部材２２ａ，２２ｂが側部吊持部材１８ａ，１８ｃに、連結部材４０ａ，４０ｂ，４０ｃ，４０ｄでそれぞれ連結される。さらに、頂部支持部材２２ａ，２２ｂと頂部吊持部材２４ａ，２４ｂも、図３（ａ）に示すごときワイヤーロープとターンバックルを含む連結部材５０ａ，５０ｂでそれぞれ連結される。
【００２２】
第３実施例では、ジェットファン１０の重さが主として側部外壁に連結する連結部材２０ａ，２０ｃで支持され、端部外壁の軸方向の前後と上下ならびに左右の動きが、端部外壁にそれぞれ連結される３本の連結部材４０ａ，４０ｃ，５０ａと４０ｂ，４０ｄ，５０ｂとで規制される。なお、主としてジェットファン１０の重さを支持するために円筒状ケーシング１２の軸方向中央部の側部外壁に連結される連結部材の本数は、第３実施例のごとく両側にそれぞれ各１本でも良く、また第１および第２実施例のごとく両側に各２本でも良く、さらには両側に各３本以上であっても良く、ジェットファン１０の重さと連結部材の強度などにより適宜に設定すれば良い。
【００２３】
さらに、本発明の第４実施例を図８および図９を参照して説明する。図８は、本発明のジェットファンの支持構造の第４実施例を軸方向に見た図である。図９は、本発明のジェットファンの支持構造の第４実施例を円筒状ケーシングを横方向から見た図である。図８および図９において、図１ないし図７と同じまたは均等な部材には同じ符号を付けて重複する説明を省略する。
【００２４】
図８および図９に示す本発明の第４実施例において、図６および図７に示す本発明の第３実施例と相違するところは、以下の通りである。まず、円筒状ケーシング１２の軸方向両端部の端部外壁に軸方向から見て左右両側で頂部より幾分下側にずらした位置に端部支持部材６０ａ，６０ｂ，６０ｃ，６０ｄがそれぞれ設けられる。そして、端部支持部材６０ａ，６０ｂ，６０ｃ，６０ｄから軸方向に見て逆ハ字状の斜め上方位置であるとともに円筒状ケーシング１２を横方向から見て逆ハ字状の斜め上方位置のトンネル天井壁１６に、端部吊持部材６２ａ，６２ｂ，６２ｃ，６２ｄがそれぞれ設けられる。さらに、対応する端部支持部材６０ａ，６０ｂ，６０ｃ，６０ｄと端部吊持部材６２ａ，６２ｂ，６２ｃ，６２ｄが、図１２に示すごとき剛体として作用する連結部材６４ａ，６４ｂ，６４ｃ，６４ｄでそれぞれ連結される。
【００２５】
かかる構成からなる第４実施例では軸方向から見て逆ハ字状に配設される連結部材６４ａ，６４ｃと６４ｂ，６４ｄにより円筒状ケーシング１２の軸方向両端部の前後と上下および左右の動きが規制される。また、連結部材６４ａ，６４ｂ，６４ｃ，６４ｄに剛体の構造を用いることで、円筒状ケーシング１２の軸回りの動きも確実に規制することができる。もって、連結部材の損傷を生ずることがない。
【００２６】
なお、上記実施例において、ワイヤーロープ４２とターンバックル４４を含む連結部材４０ａ，４０ｂ，４０ｃ，４０ｄに代えて、図１２に示すごとき従来構造の剛体の連結部材を用いても良い。
【００２７】
【発明の効果】
以上説明したように、本発明のジェットファンの支持構造は構成されているので、以下のごとき格別な効果を奏する。
【００２８】
請求項１記載のジェットファンの支持構造にあっては、円筒状ケーシングの軸方向両端部の端部外壁が、軸方向に見て逆Ｖ字状または逆ハ字状に連結部材でトンネル天井壁に連結されるので、端部外壁が軸方向に見て左右の動きが規制される。もって、連結部材に摩耗や金属疲労を生ずることがない。
【００２９】
請求項２記載のジェットファンの支持構造にあっては、円筒状ケーシングの軸方向両端側の端部外壁が、軸方向に見てまた横方向から見てともに略Ｖ字状または略ハ字状となるように３本の連結部材でトンネル天井壁に連結されるので、軸方向の前後と上下および左右のいずれの動きも確実に規制される。
【００３０】
請求項３記載のジェットファンの支持構造にあっては、側部吊持部材と端部外壁とを新たな連結部材で連結するので、これらの新たな連結部材を連結するための吊持部材および支持部材を増やす必要がない。そこで、従来構造のジェットファンの支持構造を、簡単に本発明の構造に改造することができる。
【００３１】
請求項４記載のジェットファンの支持構造にあっては、ワイヤーロープとターンバックルを含んで連結部材を構成したので、その長さ調整が容易であり、適宜な張力で張架することが簡単にできる。しかも、剛体のものに比較して、重量が軽くその取り扱いが容易であって、作業が簡単に行い得る。
【図面の簡単な説明】
【図１】本発明のジェットファンの支持構造の第１実施例を軸方向に見た図である。
【図２】本発明のジェットファンの支持構造の第１実施例を円筒状ケーシングを横方向から見た図である。
【図３】本発明の連結部材の一例の構造を示す図である。
【図４】本発明のジェットファンの支持構造の第２実施例を軸方向に見た図である。
【図５】本発明のジェットファンの支持構造の第２実施例と円筒状ケーシングを横方向から見た図である。
【図６】本発明のジェットファンの支持構造の第３実施例を軸方向に見た図である。
【図７】本発明のジェットファンの支持構造第３実施例を円筒状ケーシングを横方向から見た図である。
【図８】本発明のジェットファンの支持構造の第４実施例を軸方向に見た図である。
【図９】本発明のジェットファンの支持構造の第４実施例を円筒状ケーシングを横方向から見た図である。
【図１０】従来のジェットファンの支持構造の一例を軸方向に見た図である。
【図１１】従来のジェットファンの支持構造の一例を円筒状ケーシングを横方向から見た図である。
【図１２】従来の連結部材の一例の構造を示す図である。
【符号の説明】
１０ジェットファン
１２円筒ケーシング
１４ａ，１４ｂ，１４ｃ，１４ｄ側部支持部材
１６トンネル天井壁
１８ａ，１８ｂ，１８ｃ，１８ｄ側部吊持部材
２０ａ，２０ｂ，２０ｃ，２０ｄ，２６ａ，２６ｂ，４０ａ，４０ｂ，４０ｃ，４０ｄ，５０ａ，５０ｂ，６４ａ，６４ｂ，６４ｃ，６４ｄ連結部材
２２ａ，２２ｂ頂部支持部材
２４ａ，２４ｂ頂部吊持部材
４２ワイヤーロープ
４４ターンバックル
６０ａ，６０ｂ，６０ｃ，６０ｄ端部支持部材
６２ａ，６２ｂ，６２ｃ，６２ｄ端部吊持部材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a jet fan support structure in which a jet fan installed suspended from a tunnel ceiling wall of a road tunnel does not swing during operation.
[0002]
[Prior art]
In order to ventilate the inside of the road tunnel, a jet fan is installed suspended from the tunnel ceiling wall of the road tunnel. An example of a conventional jet fan support structure for suspending and installing this jet fan is shown in FIGS. FIG. 10 is an axial view of an example of a conventional jet fan support structure. FIG. 11 is a view of an example of a support structure for a conventional jet fan as seen from the side of a cylindrical casing. FIG. 12 is a view showing a structure of an example of a conventional connecting member. 10 to 12, the side support members 14a, 14b, and 14c are formed on the two side outer walls by shifting axially on both sides of the cylindrical casing 12 of the jet fan 10 when viewed in the axial direction. , 14d, respectively, and the side suspension members 18a, 18b, 18c, 18d are respectively provided on the tunnel ceiling wall 16 at a substantially upper position or an obliquely upper position in a substantially inverted C shape when viewed in the axial direction. Then, the corresponding side support members 14a, 14b, 14c, 14d and the side suspension members 18a, 18b, 18c, 18d are connected by the connecting members 20a, 20b, 20c, 20d, respectively. Further, top support members 22a and 22b are respectively provided on the tops of the end outer walls at both ends in the axial direction of the cylindrical casing 12, and when the cylindrical casing 12 is viewed from the side, the top support members 22a and 22b Top suspension members 24a and 24b are respectively provided on the tunnel ceiling wall at an obliquely upward position in a substantially inverted C shape. Then, the corresponding top support members 22a and 22b and the top suspension members 24a and 24b are connected by connection members 26a and 26b, respectively. The connecting members 20a, 20b, 20c, 20d, 26a, and 26b are composed of a rod-shaped member 30 provided with female screws at both ends and coupling members 32 and 34 provided with male screws that are screwed into the female screws on one end side. It is formed. An example of the coupling members 32 and 34 is an eye bolt or a male screw engraved on one end and a shackle on the other end. Therefore, the lengths of the connecting members 20a, 20b, 20c, and 20d can be adjusted, and after the adjustment, the connecting members 20a, 20b, 20c, and 20d act as rigid bodies that do not expand and contract in the length direction.
[0003]
In such a conventional jet fan support structure, the weight of the jet fan 10 is mainly determined by the connecting members 20a, 20b, 20c, and 20d that are connected to the outer side wall of the axially central portion of the cylindrical casing 12 of the jet fan 10. Are connected to end outer walls at both ends of the cylindrical casing 12 in the axial direction, and are connected by connecting members 26a and 26b that are obliquely stretched in an inverted C shape when the cylindrical casing 12 is viewed from the lateral direction. The jet fan 10 is restricted from swinging in the axial direction.
[0004]
[Problems to be solved by the invention]
By the way, when the jet fan 10 is operated, thrust is generated by the rotation of the impeller, and as a result, both axial ends of the cylindrical casing 12 not only move back and forth in the axial direction but also look in the axial direction. Force that swings on both the left and right sides. That is, when the cylindrical casing 12 is viewed from above or below, a phenomenon occurs in which both end portions thereof move in an approximately 8 shape.
[0005]
Therefore, in the conventional support structure, the front and rear movements in the axial direction can be restricted by the connecting members 26a and 26b connected to the outer wall of the end portion, but the left and right movements cannot be restricted in the axial direction. . As a result, the side suspension members 18a, 18b, 18c, 18d, the top suspension members 24a, 24b, the side support members 14a, 14b, 14c, 14d, the top support members 22a, 22b, and the connecting members 20a, 20b, Wear and fatigue of the contact portion of the connecting portion with 20c, 20d, 26a, and 26b may progress, and the connecting portion may be damaged. Also, the side suspension members 18a, 18b, 18c, 18d and the side support members 14a, 14b, 14c, 14d are connected by swinging the both ends of the cylindrical casing 12 to the left and right as viewed in the axial direction. The connecting members 20a, 20b, 20c, and 20d are repeatedly subjected to torsional loads, and are likely to cause metal fatigue. In the worst case, the jet fan 10 may fall off the tunnel ceiling wall 16 and cause a serious accident.
[0006]
The present invention has been made to remedy the problems of the prior art as described above, and provides a support structure for a jet fan that reliably regulates the swinging of the cylindrical casing of the jet fan.
[0007]
[Means for Solving the Problems]
In order to achieve such an object, the jet fan support structure of the present invention comprises one or more side outer walls on both sides as viewed in the axial direction at the axial center of the cylindrical casing of the jet fan, A connecting ceiling member is connected to a tunnel ceiling wall at a substantially upper position of the side outer wall or a substantially inverted C-shaped upper position when viewed in the axial direction, and the end outer walls at both axial ends of the cylindrical casing are The tunnel ceiling wall has a substantially V shape or a substantially inverted C shape when viewed in the axial direction, and is connected by an oblique connecting member when viewed from the lateral direction.
[0008]
Further, the outer wall of the end portion on both axial sides of the cylindrical casing and the tunnel ceiling wall are substantially V-shaped or substantially C-shaped and apart from the oblique connecting member, the oblique and vertical surfaces. They may be connected to each other on the opposite side with an oblique connecting member.
[0009]
In addition, the suspension member disposed on the tunnel ceiling wall and connected to the side outer wall by the connecting member is connected to the end outer wall at one end and is connected in a substantially V shape or a substantially inverted C shape. The other ends of the members may be connected to each other.
[0010]
Further, the connecting member that connects the outer end wall and the tunnel ceiling wall in a substantially V shape or a substantially inverted C shape when viewed in the axial direction may include a wire rope and a turnbuckle. it can.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a view of a first embodiment of a jet fan support structure according to the present invention as viewed in the axial direction. FIG. 2 is a side view of a cylindrical casing as viewed from the side according to a first embodiment of the jet fan support structure of the present invention. FIG. 3 is a view showing a structure of an example of the connecting member of the present invention. 1 to 3, the same or equivalent members as in FIGS. 10 to 12 are assigned the same reference numerals and redundant description is omitted. .
[0012]
The first embodiment of the present invention shown in FIGS. 1 to 3 is different from the conventional example shown in FIGS. 10 to 12 as follows. In addition to the structure of the conventional example, one top support member 22a and the side suspension members 18a and 18c of the tunnel ceiling wall 16 on the side close thereto are connected by new connection members 40a and 40c. Further, the other top support member 22b and the side suspension members 18b and 18d of the tunnel ceiling wall 16 on the side close thereto are connected by new connection members 40b and 40d. The structure of these newly added connecting members 40a, 40b, 40c, and 40d is formed by a wire rope 42, a turnbuckle 44, and shackles 46, 46... As shown in FIG. Therefore, the length of the top support members 22a, 22b and the side suspension members 18a, 18b, 18c, 18d is adjusted by appropriately adjusting the length of the turnbuckle 44, and the tension is stretched with an appropriate tension. be able to. As shown in FIG. 3B, the top support members 22a, 22b and the side suspension members 18a, 18b, 18c, 18d to which the new connection members 40a, 40b, 40c, 40d are connected, A hole 36 is formed separately from the hole 34 to which the connecting members 20a, 20b, 20c, and 20d are connected.
[0013]
In the first embodiment having such a configuration, the new connecting members 40a, 40c and 40b, 40d are stretched in a substantially V shape with the top support members 22a, 22b turned back when viewed from the axial direction. Further, when the cylindrical casing 12 is viewed from the side, the connecting members 40a, 40c, 40b, and 40d newly provided with respect to the oblique connecting members 26a and 26b that are conventionally connected to the top support members 22a and 22b. Is slanted on the opposite side across the vertical plane.
[0014]
Therefore, the top support members 22a and 22b provided on the end outer wall of the cylindrical casing 12 are fixed by three connecting members 26a, 40a, 40c and 26b, 40b, 40d, respectively. As a result, both ends of the cylindrical casing 12 are restricted from moving back and forth in the axial direction, up and down, and left and right.
[0015]
Therefore, there is no wear or fatigue at the contact portion of the connecting portion, and the connecting members 20a, 20b, 20c, and 20d that mainly support the movement of the jet fan do not twist, and metal fatigue does not occur. The connecting members 40a, 40b, 40c, and 40d formed by the wire rope 42 and the turnbuckle 44 are small in weight and can be easily stretched. Therefore, the conventional jet fan support structure can be easily improved. In addition to the holes 34 for connecting the conventional connecting members 20a, 20b, 20c, 20d, 26a, and 26b, a connecting hole 36 for connecting the new connecting members 40a, 40b, 40c, and 40d is provided, so that the connecting member is provided. There is no contact and wear between them.
[0016]
Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 4 is a view of the jet fan support structure according to the second embodiment of the present invention as viewed in the axial direction. FIG. 5 is a side view of a jet fan supporting structure according to a second embodiment of the present invention and a cylindrical casing. 4 and 5, the same or equivalent members as those in FIGS. 1 to 3 are denoted by the same reference numerals, and redundant description is omitted.
[0017]
The second embodiment of the present invention shown in FIGS. 4 and 5 differs from the first embodiment of the present invention shown in FIGS. 1 to 3 as follows. First, the top suspension members 24a and 24b and the connecting members 26a and 26b connected thereto are omitted. Therefore, only the connecting members 40a, 40c, 40b, and 40d are connected to the top support members 22a and 22b, respectively.
[0018]
In the second embodiment having such a configuration, the connecting members 40a, 40c, 40b, and 40d are substantially V-shaped with the top support members 22a and 22b turned back, respectively. Further, when the cylindrical casing 12 is viewed from the lateral direction, the connecting members 40a, 40c and 40b, 40d are respectively stretched obliquely in a substantially C shape.
[0019]
Therefore, the axial movement of both ends of the cylindrical casing 12 is restricted by the connecting members 40a, 40c, 40b, and 40d, respectively. Therefore, no wear or fatigue occurs at the contact portion of the connecting portion. Further, the connecting members 20a, 20b, 20c, and 20d do not twist and do not cause metal fatigue. By omitting the connecting members 26a and 26b, the structure is simplified and the installation work of the jet fan 10 is facilitated.
[0020]
A third embodiment of the present invention will be described with reference to FIGS. FIG. 6 is a view of the third embodiment of the jet fan support structure of the present invention as viewed in the axial direction. FIG. 7 is a view of a cylindrical casing as viewed from the side, according to a third embodiment of the jet fan support structure of the present invention. 6 and 7, the same or equivalent members as those in FIGS. 1 to 5 are denoted by the same reference numerals and redundant description is omitted.
[0021]
The third embodiment of the present invention shown in FIGS. 6 and 7 is different from the first embodiment of the present invention shown in FIGS. 1 to 3 as follows. First, side support members 14a and 14c are provided on one side outer wall on each side of the cylindrical casing 12 of the jet fan 10 when viewed in the axial direction. Side suspension members 18a and 18c are provided on the tunnel ceiling wall 16 at an obliquely upward position, which is substantially reverse-shaped when viewed. Then, the corresponding side support members 14a and 14c and the side suspension members 18a and 18c are connected by the connection members 20a and 20c, respectively. The weight of the jet fan 10 is mainly supported by the connecting members 20a and 20c. The top support members 22a and 22b are connected to the side suspension members 18a and 18c by connection members 40a, 40b, 40c, and 40d, respectively. Further, the top support members 22a and 22b and the top suspension members 24a and 24b are also connected by connecting members 50a and 50b including a wire rope and a turnbuckle as shown in FIG.
[0022]
In the third embodiment, the weight of the jet fan 10 is mainly supported by the connecting members 20a and 20c that are connected to the side outer wall, and the axial movement of the end outer wall in the longitudinal direction, the up and down, and the left and right movements are respectively applied to the end outer wall. It is regulated by the three connecting members 40a, 40c, 50a and 40b, 40d, 50b to be connected. It should be noted that the number of connecting members connected to the side outer wall at the central portion in the axial direction of the cylindrical casing 12 to mainly support the weight of the jet fan 10 may be one on each side as in the third embodiment. In addition, as in the first and second embodiments, two may be provided on both sides, and more than three may be provided on both sides, and may be set as appropriate depending on the weight of the jet fan 10 and the strength of the connecting member. It ’s fine.
[0023]
Further, a fourth embodiment of the present invention will be described with reference to FIGS. FIG. 8 is a view of the fourth embodiment of the jet fan support structure of the present invention viewed in the axial direction. FIG. 9 is a view of a cylindrical casing as viewed from the side, according to a fourth embodiment of the jet fan support structure of the present invention. 8 and 9, the same or equivalent members as those in FIGS. 1 to 7 are denoted by the same reference numerals and redundant description is omitted.
[0024]
The fourth embodiment of the present invention shown in FIGS. 8 and 9 is different from the third embodiment of the present invention shown in FIGS. 6 and 7 as follows. First, end support members 60a, 60b, 60c, and 60d are respectively provided on the outer end walls of both ends in the axial direction of the cylindrical casing 12 at positions slightly shifted from the top on the left and right sides when viewed from the axial direction. . Then, the tunnel is located at an obliquely upward position in an inverted C shape when viewed in the axial direction from the end support members 60a, 60b, 60c, and 60d, and at an obliquely upward position in the inverted shape when viewed from the lateral direction. End suspension members 62a, 62b, 62c, and 62d are provided on the ceiling wall 16, respectively. Further, the corresponding end support members 60a, 60b, 60c, 60d and the end suspension members 62a, 62b, 62c, 62d are connected members 64a, 64b, 64c, 64d that act as rigid bodies as shown in FIG. Connected.
[0025]
In the fourth embodiment having such a configuration, the connecting members 64a, 64c, 64b, and 64d arranged in an inverted C shape when viewed from the axial direction move back and forth, up and down, and left and right at both axial ends of the cylindrical casing 12. Is regulated. Further, by using a rigid structure for the connecting members 64a, 64b, 64c, and 64d, the movement of the cylindrical casing 12 around the axis can be reliably restricted. Therefore, the connecting member is not damaged.
[0026]
In the above embodiment, instead of the connecting members 40a, 40b, 40c and 40d including the wire rope 42 and the turnbuckle 44, a rigid connecting member having a conventional structure as shown in FIG. 12 may be used.
[0027]
【The invention's effect】
As described above, since the jet fan support structure of the present invention is configured, the following effects can be achieved.
[0028]
3. The jet fan support structure according to claim 1, wherein the outer end walls of the cylindrical casing at both ends in the axial direction are connected to the tunnel ceiling wall by connecting members in an inverted V shape or an inverted C shape when viewed in the axial direction. Since the end outer wall is viewed in the axial direction, the left and right movements are restricted. As a result, the connecting member is not worn or fatigued.
[0029]
3. The jet fan support structure according to claim 2, wherein the outer end walls on both axial ends of the cylindrical casing are substantially V-shaped or substantially C-shaped when viewed in the axial direction and from the lateral direction. Since it is connected to the tunnel ceiling wall by three connecting members so as to be, any movement in the axial direction, back and forth, up and down, and left and right is reliably regulated.
[0030]
In the jet fan support structure according to claim 3, since the side suspension member and the end outer wall are connected by a new connection member, a suspension member for connecting these new connection members and There is no need to increase the number of support members. Therefore, the support structure of the conventional jet fan can be easily modified to the structure of the present invention.
[0031]
In the jet fan support structure according to claim 4, since the connecting member is configured including the wire rope and the turnbuckle, its length can be easily adjusted, and it is easy to stretch with an appropriate tension. it can. In addition, the weight is light and easy to handle as compared with a rigid body, and the operation can be easily performed.
[Brief description of the drawings]
FIG. 1 is a view of a first embodiment of a jet fan support structure according to the present invention viewed in an axial direction;
FIG. 2 is a view of a cylindrical casing as viewed from the side, according to a first embodiment of the jet fan support structure of the present invention.
FIG. 3 is a view showing a structure of an example of a connecting member of the present invention.
FIG. 4 is a view of a jet fan supporting structure according to a second embodiment of the present invention as viewed in the axial direction.
FIG. 5 is a view of a jet fan support structure according to a second embodiment of the present invention and a cylindrical casing as viewed from the side.
FIG. 6 is a view of a third embodiment of the jet fan support structure according to the present invention as viewed in the axial direction;
FIG. 7 is a view of a cylindrical casing as viewed from the side, according to a third embodiment of the jet fan support structure of the present invention.
FIG. 8 is a view of a jet fan supporting structure according to a fourth embodiment of the present invention viewed in the axial direction.
FIG. 9 is a view of a cylindrical casing as viewed from the side, according to a fourth embodiment of the jet fan support structure of the present invention.
FIG. 10 is an axial view of an example of a conventional jet fan support structure.
FIG. 11 is a view of an example of a conventional jet fan support structure in which a cylindrical casing is viewed from a lateral direction.
FIG. 12 is a view showing a structure of an example of a conventional connecting member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Jet fan 12 Cylindrical casing 14a, 14b, 14c, 14d Side support member 16 Tunnel ceiling wall 18a, 18b, 18c, 18d Side suspension member 20a, 20b, 20c, 20d, 26a, 26b, 40a, 40b, 40c 40d, 50a, 50b, 64a, 64b, 64c, 64d Connecting member 22a, 22b Top support member 24a, 24b Top suspension member 42 Wire rope 44 Turn buckle 60a, 60b, 60c, 60d End support member 62a, 62b, 62c, 62d End suspension member

Claims

One or more side outer walls on both sides as viewed in the axial direction at the axial center of the cylindrical casing of the jet fan, and a substantially inverted cross-section when viewed in a position substantially above these side outer walls or in the axial direction. Are connected to each other by a connecting member, and the outer end walls of the cylindrical casing at both ends in the axial direction and the tunnel ceiling wall are substantially V-shaped or substantially viewed in the axial direction. A support structure for a jet fan, characterized in that it has an inverted C shape and is formed by connecting the cylindrical casings with diagonal connecting members as viewed from the side.

2. The jet fan support structure according to claim 1, wherein the outer end walls of the cylindrical casing at both ends in the axial direction and the tunnel ceiling wall are connected to each other in a substantially V shape or a substantially C shape and at an angle. A jet fan support structure characterized in that, apart from the members, the diagonal and vertical planes are sandwiched to connect the opposite sides with diagonal connecting members.

3. The jet fan support structure according to claim 2, wherein one end is connected to the outer end wall of the suspension member disposed on the tunnel ceiling wall and connected to the side outer wall by the connecting member. A support structure for a jet fan, characterized in that it is configured by connecting the other ends of the connecting members in the shape of a letter or a substantially inverted C shape.

4. The jet fan support structure according to claim 1, wherein the end outer wall and the tunnel ceiling wall are connected in a substantially V shape or a substantially inverted C shape when viewed in the axial direction. 5. A jet fan support structure characterized in that the member includes a wire rope and a turnbuckle.