JP3674754B2

JP3674754B2 - Work table device for generator inspection

Info

Publication number: JP3674754B2
Application number: JP08025799A
Authority: JP
Inventors: 秀雄高橋; 孝司高橋
Original assignee: 株式会社シーテック; 株式会社サンキョウ; 橋栄工業株式会社
Priority date: 1999-02-17
Filing date: 1999-02-17
Publication date: 2005-07-20
Anticipated expiration: 2019-02-17
Also published as: JP2000245114A

Description

【０００１】
【発明の属する技術分野】
本発明は、立て軸型水車発電機の現地発電所内における保守点検作業に当り、該発電機を事前に分解して、その回転子側を一旦機外に取り出した後の、残余の固定子側機内の空洞部にこれを取り入れて、その固定子側機内の周辺部一帯の発電機材を点検整備する際の保守点検作業に用いられる、分割組み立て型の作業テーブル装置に関するものである。
【０００２】
【従来の技術】
従来のこの種発電所内における立て軸型水車発電機の保守点検作業は、該発電機を事前に分解して、その回転子側を一旦機外に取り出して空洞状態にされた固定子側機内の底部に位置する水車バレル等の発電所内構築物の上に、先ず基盤用の角材や板材等を多数並べ、更にその上に多数の鉄パイプや踏み板等を任意に連結した足場器材を、前記発電機固定子側の機内空洞部に任意高さに組み立てて仮設した前記足場器材の周辺部の一帯で、多数の作業員が作業手順に合せて器材上に都度上り下りしたり、都度器材の高さを調節したり、作業場所を移動したりして、前記発電機の固定子側機内の周辺部一帯にある多数の発電機材を入念に点検整備する、固定的に仮設された状態での足場器材上からの繁雑困難な保守点検作業を総て人力に依存して行っていたものである。
【０００３】
【発明が解決しよとする課題】
上記従来の発電機固定子側の空洞部に固定的に仮設された状態での足場器材上からの発電機材の保守点検作業は、足場器材の周辺部一帯で多数の作業員が作業手順に合せて器材上に都度上り下りしたり、都度器材の高さを調節したり、作業場所を移動したりして、多数の発電機材の繁雑困難な保守点検作業を総て人力に依存して行わなければならなかったので、作業日時や人手も嵩み、しかも労働環境も悪く、作業能率も極めて低位なものとなっていた重大な不都合があったものを本発明によりこれを総て払拭すべく、この種立て軸型水車発電機の現地発電所内における保守点検作業に当り、該発電機を事前に分解して、その回転子側を一旦機外に取り出した後の、残余の固定子側機内に形成される空洞部内に、本発明になる保守点検用の作業テーブル装置を安全確実に取り入れることができるように、先ず関係部材の製作工場からの運送作業や、その発電所内における組み立て作業における大きさによる障害を排除するために、これを分割組み立て型に構成すると共に、前記発電機固定子側機内の保守点検作業における作業員の器材上への上り下りや、器材の高さを調節したり、作業場所を移動したりする従来の人力に依存していた諸作業を機材化、自動化して、この種発電機の固定子側機内における周辺部一帯の多数の発電機械の保守点検作業における労働環境を大幅に改善して、作業能率の大幅向上と、作業日時の大幅短縮を一挙に図るように構成したものである。
【０００４】
【課題を解決するための手段】
本発明は従来の固定的に仮設された状態での足場器材に起因するこの種発電所内における立て軸型水車発電機の保守点検作業上の重大な不都合を払拭することを目的としたものであって、即ち本発明の立て軸型水車発電機の保守点検用作業テーブル装置の請求項１に記載の主体発明の一つを構成する、『固定状態の作業テーブルを上下方向に昇降させる単一昇降機能の作業テーブル装置』における固定型作業テーブル部分（Ａ１）は、その関係部材の製作工場からの運送作業や、その発電所内における組み立て作業に適応させるために、適宜の小区画づつに分割可能に螺装された分割組み立て型の固定円盤が発電所内に設置されている立て軸型水車発電機の固定子側機内の空洞最上部に配置された分割可能な固定型支承体部分（Ｂ１）上に水平に固着されており、また前記固定型作業テーブル部分（Ａ１）を水平に固着した前記固定型支承体部分（Ｂ１）を、前記発電機の固定子側機内の空洞周辺部にある発電機材の保守点検作業の手順に合せて上下方向に任意に昇降させる昇降機構部分（Ｃ）は、その関係部材の製作工場からの運送作業や、その発電所内における組み立て作業に適応させるために、複数台の、且つ複数段積み重ね可能のＸ型支柱タイプの小型油圧リフターからなる小型昇降機を前記発電機の固定子側の底部に位置する水車バレル等の発電所内構築物の上に組み立てた分割可能な駕型の基礎機枠上に分散して配置され、且つその複数台が同時に昇降可能に連装されて前記発電機の固定子側機内の空洞最下部に配置されておることを特徴とする発電機の保守点検用作業テーブル装置である。
【０００５】
また本発明の立て軸型水車発電機の保守点検用作業テーブル装置の請求項２に記載の主体発明の他の一つを構成する、『円周方向に回転可能な作業テーブルを上下方向にも昇降させる複合回転昇降機能の作業テーブル装置』における回転型作業テーブル部分（Ａ２）は、その関係部材の製作工場からの運送作業や、その発電所内における組み立て作業に適応させるために適宜の小区画づつに分割可能に螺装された分割組み立て型の回転円盤が発電所内に設置されている立て軸型水車発電機の固定子側機内の空洞最上部に配置されており、また前記回転型作業テーブル部分（Ａ２）を下方から水平に支承しながらこれを前記発電機の固定子側機内の空洞周辺部にある発電機材の保守点検作業の手順に合せて円周方位に回転させる回転型支承体部分（Ｂ２）は、その関係部材の製作工場からの運送作業や、その発電所内における組立作業に適応させるために、複数台の、且つ複数段積み重ね可能のＸ型支柱タイプの小型油圧リフターからなる小型駆動機を適宜の小区画づつに分割可能に螺装された分割組み立て型の支承盤上に放射状に分散して配置され、且つその複数台が同時に回転可能に連装されて前記回転型作業テーブル部分（Ａ２）より下方の前記発電機の固定子側機内の空洞中間部に配置されており、更にまた前記回転型作業テーブル部分（Ａ２）と前記回転型支承体部分（Ｂ２）とを上下一体に積み重ねて前記発電機の固定子側機内の空洞周辺部にある発電機材の保守点検作業の手順に合せて上下方向に任意に昇降させる昇降機構部分（Ｃ）は、その関係部材の製作工場からの運送作業や、その発電所内における組み立て作業に適応させるために、複数台の、且つ複数段積み重ね可能のＸ型支柱タイプの小型油圧リフターからなる小型昇降機を前記発電機の固定子側の底部に位置する水車バレル等の発電所内構築物の上に組み立てた分割可能な駕型の基礎機枠の上に分散して配置され、且つその複数台が同時に昇降可能に連装されて前記発電機の固定子側機内の空洞最下部に配置されておることを特徴とする発電機の保守点検用作業テーブル装置である。
【０００６】
【発明の実施の形態】
以下本発明の実施の形態について、図面を参照して説明すれば次の通りであって、図１および図２は本発明の立て軸型水車発電機の保守点検用作業テーブル装置の請求項１に記載の主体発明の一つを構成する、『固定状態の作業テーブルを上下方向に昇降させる単一昇降機能の作業テーブル装置』の実施の一例を示す側面図と平面図である。図中（Ａ１）は固定型作業テーブル部分、（Ｂ１）は固定型支承体部分、（Ｃ）は昇降機構部分、１は立て軸型水車発電機の固定子、２は立て軸型水車の主軸、３は前記立て軸型水車の主軸２の周辺部にコンクリート等で構築されている水車バレルである。また図３および図４は前記水車バレル３等の発電所内構築物の上に組み立てた駕型の基礎機枠４の側面図と平面図である。
【０００７】
次に本発明の固定型装置を構成する前記固定型作業テーブル部分（Ａ１）と固定型支承体部分（Ｂ１）について、図５および図６により更に詳述すれば、一般に既設の水力発電所に設置されている立て軸型水車発電機の中心部にある回転子側を一旦機外に取り出した後の、固定子１側の機内に形成される空洞部の直径の多くは、４ｍ前後のものから７ｍにも及ぶ、かなり長大な寸法の発電機に製作されているものが多いので、上記発電機の固定子１側の機内周辺部にある発電機材を点検整備するために、前記固定型作業テーブル部分（Ａ１）の上に作業員を搭乗させると共に、発電機材の保守点検作業に必要な部品や工具等もその上に搭載しながら所定の作業手順に合せて上下方向に任意に昇降させる、前記固定型作業テーブル部分（Ａ１）の所要のテーブル寸法も、必然的に前記発電機固定子１側の機内空洞部の直径に見合いの、かなり長大な寸法の円盤になり、従って１枚板状の円盤では一般製作工場等で汎用されている荷台幅２．４ｍ程度の１０トン積み普通トラック等を用いた製作工場から現地発電所までの運送作業にも、またその現地発電所における空洞部内への組み立て作業にも、そのままの長大な寸法では多大の困難を生ずる所となるので、その製作段階で固定型作業テーブル部分（Ａ１）を図示のように一般製作工場等で汎用されている１０トン積み程度の普通トラックの荷台に積み込み可能な２．４ｍ未満程度の半月形等の形状の固定円盤５ａ，５ｂ等からなる小区画づつに分割されたものを先ず製作し、次でその現地発電所内における組み立ての段階で相互をネジ６等により連結して最終的に長大な円盤に再生する、分割組み立て型の固定円盤５ａ，５ｂを固定型作業テーブル部分（Ａ１）に螺装できるように構成したものである。しかし上記分割して螺装しただけの固定円盤５ａ，５ｂからなる固定型作業テーブル部分（Ａ１）は、そのままの構成では安全作業面を維持し難いので、その難点を助勢するために更に箱型の構造に製作された固定型支承体部分（Ｂ１）の上にこれを水平に固着するように構成したものである。
【０００８】
尚、上記固定円盤５ａ，５ｂからなる固定型作業テーブル部分（Ａ１）には、図示してないがその外周部に帯鉄等の薄板を円盤平面より少し高めに巻き付けて、該円盤上に搭載した部品や工具等の転落防止を図る安全部材等も容易に付設し得ることは勿論である。
【０００９】
次にまた本発明の固定型装置を構成する上記固定型作業テーブル部分（Ａ１）と固定型支承体部分（Ｂ１）とを上下一体に固着して前記発電機の固定子１側の機内空洞部を保守点検作業の手順に合せて上下方向に任意に昇降させる昇降機構部分（Ｃ）の場合も、これを図７に詳述するように前述の固定型作業テーブル部分（Ａ１）および固定型支承体部分（Ｂ１）の場合と同様に、その関係部材の製作工場からの運送作業や、その発電所内における組み立て作業に適応させるために、図示のように昇降推力数トン以下程度の複数台の、且つ複数段積み重ね可能のＸ型支柱タイプの小型油圧リフターからなる小型昇降機１７ａ，１７ｂ，１８ａ，１８ｂ，１９ａ，１９ｂを水車バレル３等の発電所内構築物の上に組み立てた分割可能な駕型の基礎機枠４の上に上下、左右に分散して配置すると共に、その複数台の、且つ複数段積み重ね可能のＸ型支柱タイプの小型油圧リフターからなる小型昇降機１７ａ，１７ｂ，１８ａ，１８ｂ，１９ａ，１９ｂを同時に昇降可能に、それぞれを制御回路で結んで連装するように構成したものである。
【００１０】
更にまた本発明装置の前記昇降機構部分（Ｃ）を構成する複数台の、且つ複数段積み重ね可能のＸ型支柱タイプの小型油圧リフターからなる小型昇降機１７ａ，１７ｂ，１８ａ，１８ｂ，１９ａ，１９ｂは、既設の水力発電所に設置されている立て軸型水車発電機の固定子１側機内の保守点検作業に必要な昇降ストロークに対応して、例えば図示のように２台づつを左右並列に配置したテーブル面積１ｍ×２ｍ程度、昇降ストローク１．２ｍ程度の小型油圧リフターを複数段、例えば保守点検作業の所要昇降ストローク３．５ｍ程度の場合に対応しては、前記昇降ストローク１．２ｍ程度の小型油圧リフターを３段重ねに積み重ねるように対応する（請求項３）と共に、その積み重ねによって惹起され易い全体の揺動現象には、図示のように左右のＸ型支柱の組み付け方向を各段毎に交互に直交させるように組み付けて、前記Ｘ型支柱の同一方向の組付けに起因する全体の揺動現象の拡大を抑制する（請求項４）ように構成したものである。
【００１１】
次に本発明の立て軸型水車発電機の保守点検用作業テーブル装置の請求項２に記載の主体発明の他の一つを構成する、「円周方向に回転可能な作業テーブルを上下方向にも昇降させる複合回転昇降機能の作業テーブル装置」の実施の一例を図８の側面図と図９の平面図に示す。図中（Ａ２）は回転型作業テーブル部分、（Ｂ２）は回転型支承体部分、（Ｃ）は前述の固定型の場合と同様機能の昇降機構部分、１も前述の固定型の場合に同じ立て軸型水車発電機の固定子、２も前述の固定型の場合に同じ立て軸型水車の主軸、３も前述の固定型の場合に同じ前記立て軸型水車の主軸２の周辺部にコンクリート等で構築されている水車バレル、４も前述の固定型の場合に同じ発電所内構築物の上に組み立てた駕型の基礎機枠である。また図１０および図１１は、前記回転型作業テーブル部分（Ａ２）の実施の一例を示す平面図と側面図であり、その構成は前述の固定型の場合と同様に半月形の回転円盤５ｃ，５ｄを分割組み立て可能にネジ６により螺装する他、その回転中心にはゴム等のクッション部材を放射状に配設した緩衡機構７を付設した回転中心軸８が装着されているものである。
【００１２】
尚、上記回転円盤５ｃ，５ｄからなる回転型作業テーブル部分（Ａ２）には、図示してないがその外周部に帯鉄等の薄板を円盤平面より少し高めに巻き付けて、該円盤上に搭載した部品や工具等の転落防止を図る安全部材等も容易に付設し得るのみならず、特にこの種の回転型作業テーブル部分（Ａ２）の場合は、その回転機能を有効に利用して発電機材の保守点検作業に付随する機材の切断、研摩、清掃、塗装等の補助作業を機械的に行う、電動加工機械等も搭載して連続的、能率的な作業形態のもとにこれを行い得ることは勿論である。
【００１３】
次にまた本発明装置の前記回転円盤５ｃ，５ｄからなる回転型作業テーブル部分（Ａ２）を回転自在に搭載する回転型支承体部分（Ｂ２）について、図１２および図１３によりこれを更に詳述すれば、上方に上述の回転型作業テーブル部分（Ａ２）を水平に搭載してこれを保守点検作業の手順に合せて円周方向に任意に回転させる前記回転型支承体部分（Ｂ２）の場合も、上述の回転型作業テーブル部分（Ａ２）の場合と同様に、その関係部材の製作工場からの運送作業や、その発電所内における組み立て作業に適応させるために、図示のようにギヤードモーター等からなる複数台の小型駆動機９ａ，９ｂ，９ｃを、例えば８角形等の形状に切り出した鉄板等を１０トン積み程度の普通トラックの荷台に積み込み可能な２．４ｍ未満程度の５角形等に切り離した支承盤１１ａ，１１ｂからなる小区画づつに分割された部材を先ず製作し、次でその組み立ての段階で相互をネジ１０等により連結して所要の支承面を形状できるように螺装した前記支承盤１１ａ，１１ｂの上に、他の支承コロ１２等の補助部材等も含めてその上方に搭載される前記回転型作業テーブル部分（Ａ２）の回転円周に沿うようにその回転中心軸８を支承する軸受１３から放射状に該小型駆動機９ａ，９ｂ，９ｃを分散して配置すると共に、その複数台の小型駆動機９ａ，９ｂ，９ｃを同時に回転可能に、それぞれを制御回路で結んで連装するように構成したものである。
【００１４】
更にまた上記複数台の小型駆動機９ａ，９ｂ，９ｃには、ギヤードモーター等の原動機１４にゴムタイヤ等の弾力性を有する摩擦駆動輪１５がそれぞれ軸装されておるばかりでなく、前記原動機１４に軸装した上記摩擦駆動輪１５には、前記回転型作業テーブル部分（Ａ２）を構成する回転円盤５ｃ，５ｄに常に存在し易い歪に対応して円滑な接触駆動作用を発揮させるために、上記摩擦駆動輪１５を上方の回転円盤５ｃ，５ｄ側へ若干持ち上げるようにして、上記回転円盤５ｃ，５ｄの歪をゴムタイヤ等の弾力によってその接触状態を調整できるように構成した斜め上方への移動可能な台座等を装備した接触調整機構１６を上記小型駆動機９ａ，９ｂ，９ｃのそれぞれに装着するように構成（請求項５）したものである。
【００１５】
次にまた本発明の回転型装置を構成する上記回転型作業テーブル部分（Ａ２）と回転型支承体部分（Ｂ２）とを上下一体に積み重ねて前記発電機の固定子１側の機内空洞部を保守点検作業の手順に合せて上下方向に任意に昇降させる前記昇降機構部分（Ｃ）の場合も、これを図１４に詳述するように、前述の固定型作業テーブル部分（Ａ１）や回転型作業テーブル部分（Ａ２）および固定型支承体部分（Ｂ１）や回転型支承体部分（Ｂ２）の場合と同様に、その関係部材の製作工場からの運送作業や、その発電所内における組み立て作業に適応させるために、図示のように昇降推力数トン以下程度の複数台の、且つ複数段積み重ね可能のＸ型支柱タイプの小型油圧リフターからなる小型昇降機１７ａ，１７ｂ，１８ａ，１８ｂ，１９ａ，１９ｂを水車バレル３等の発電所内構築物の上に組み立てた分割可能な駕型の基礎機枠の上に上下、左右に分散して配置すると共に、その複数台の小型昇降機１７ａ，１７ｂ，１８ａ，１８ｂ，１９ａ，１９ｂを同時に昇降可能に、それぞれを制御回路で結んで連装するように構成したものである。
【００１６】
尚、上述した複数台の、且つ複数段積み重ね可能のＸ型支柱タイプの小型油圧リフターからなる小型昇降機１７ａ，１７ｂ，１８ａ，１８ｂ，１９ａ，１９ｂを、保守点検作業の必要昇降ストロークに対応して、その積み重ね段数を調整すること（請求項３）や、その積み重ねによる全体の揺動現象の拡大を抑制するように対応させること（請求項４）等は、上述の固定型単一昇降機能の作業テーブル装置や、回転型複合回転昇降機能の作業テーブル装置の何れにも適用し得ることは勿論である。
【００１７】
【発明の効果】
本発明は以上に説明したように、立て軸型水車発電機の現地発電所内における保守点検作業に当り、該発電機の固定子側機内の空洞部に、固定型作業テーブル部分（Ａ１）や前記回転型作業テーブル部分（Ａ２）と、固定型支承体部分（Ｂ１）や回転型支承体部分（Ｂ２）とを、昇降機構部分（Ｃ）と共に発電機の固定子側の底部に位置する水車バレル等の発電所内構築物の上に組み立てた駕型の基礎機枠の上に積み重ねて構築したものの最上部となる前記固定型作業テーブル部分（Ａ１）や回転型作業テーブル部分（Ａ２）の上に作業員を搭乗させ、また発電機材の保守点検作業に必要な部品や工具等も搭載して所定の作業手順に合せて前記固定型作業テーブル部分（Ａ１）や前記回転型作業テーブル部分（Ａ２）を上下方向に任意に昇降させ、特に前記回転型作業テーブル部分（Ａ２）の場合はこれを更に円周方向にも任意に回転させることによって、終始手近かな足場からの連続形態の保守点検作業を安全、高能率に実施できる、立て軸型水車発電機に好適な分割組み立て型の保守点検用の作業テーブル装置に構成できたものであるから、従来工法のように水車バレル等の発電所内構築物の上に基盤用の角材や板材等を多数並べ、更にその上に多数の鉄パイプや踏み板等を任意に連結した程度の足場器材を発電機固定子側の機内空洞部に任意高さに組み立てて仮設した、固定状態の足場器材の周辺部一帯で、多数の作業員が作業手順に合せて器材上に都度上り下りしたり、都度器材の高さを調節したり、作業場所を移動したりして、上記発電機の固定子側機内の周辺部一帯にある多数の発電機械を入念に点検整備する保守点検作業は、固定的に仮設された状態での足場器材の上からでは著しく繁雑困難な作業形態となり、労働環境も悪く、作業能率も極めて低位なものとなる重大な不都合があったものを、本発明装置の導入による機械化、自動化によってこれを悉く払拭して、その労働環境の大幅改善と、作業能率の大幅向上と、作業日時の大幅短縮とを一挙に達成したばかりでなく、本発明装置の分割組み立て型の構成は、関係部材の製作工場からの運送作業や、発電所内における組み立て作業の際の、大きさによる障害を完全に排除することに成功したものであり、この種立て軸型水車発電機の現場発電所における保守点検作業の合理化に大きく寄与する成果を収め得たものであるが、特に此の場合本発明においては、昇降機構部分を複数台の、且つ複数段積み重ね可能のＸ型支柱タイプの小型油圧リフターからなる小型昇降機となすことにより、関係部材の製作工場からの運送作業や、発電所内における組み立て作業に容易に適応させることが出来るばかりでなく、既設の水利発電所に設置されている立て軸型水車発電機の固定予側機内の保守点検作業に必要な昇降ストロークに対応して、その積み重ね段数を適宜増減して対応することができると共に、その積み重ねによって惹起され易い全体の揺動現象には、各小型昇降機の左右のＸ型支柱の組み付け方向を各段毎に交亙に直交させるように組み付けて、前記Ｘ型支柱の同一方向の組み付けに起因する全体の揺動現象の拡大を抑制することができるので、前記固定型作業テーブル部分及び回転型作業テーブル部分の上昇、回転を円滑、且つ安定的に作動することができ、その結果保守点検作業を安全、且つ迅速に行うことができるものあり、また、回転型支承体部分による前記回転型作業テーブル部分の回転を前記回転型支承体部分の駆動軸に軸装されたゴムタイヤ等の弾力性を有する摩擦駆動輪を適宜上方へ持ち上げる接触調整機構を介して、前記回転型作業テーブル部分と前記摩擦駆動輪との接触駆動作用を調整可能としたので、前記回転型作業テーブル部分の回転を安定した状態で行うことができる等の効果を有するものである。
【図面の簡単な説明】
【図１】本発明の固定型単一昇降機能の作業テーブル装置全体の実施の一例を示す側面図である。
【図２】本発明の固定型単一昇降機能の作業テーブル装置全体の実施の一例を示す平面図である。
【図３】本発明の駕型の基礎機枠の実施の一例を示す側面図である。
【図４】本発明の駕型の基礎機枠の実施の一例を示す平面図である。
【図５】本発明の固定型作業テーブル部分（Ａ１）と固定型支承体部分（Ｂ１）の実施の一例を示す平面図である。
【図６】本発明の固定型作業テーブル部分（Ａ１）と固定型支承体部分（Ｂ１）の実施の一例を示す側面図である。
【図７】本発明の固定型作業テーブル部分（Ａ１）と固定型支承体部分（Ｂ１）を装着した昇降機構部分（Ｃ）を上昇させた時の実施の一例を示す側面図である。
【図８】本発明の回転型複合回転昇降機能の作業テーブル装置全体の実施の一例を示す側面図である。
【図９】本発明の回転型複合回転昇降機能の作業テーブル装置全体の実施の一例を示す平面図である。
【図１０】本発明の回転型作業テーブル部分（Ａ２）の実施の一例を示す平面図である。
【図１１】本発明の回転型作業テーブル部分（Ａ２）の実施の一例を示す側面図である。
【図１２】本発明の回転型支承体部分（Ｂ２）の実施の一例を示す平面図である。
【図１３】本発明の回転型支承体部分（Ｂ２）の実施の一例を示す側面図である。
【図１４】本発明の回転型作業テーブル部分（Ａ２）と回転型支承体部分（Ｂ２）を装着した昇降機構部分（Ｃ）を上昇させた時の実施の一例を示す側面図である。
【符号の説明】
Ａ１固定型作業テーブル部分
Ａ２回転型作業テーブル部分
Ｂ１固定型支承体部分
Ｂ２回転型支承体部分
Ｃ昇降機構部分
１立て軸型水車発電機の固定子
２立て軸型水車の主軸
３水車バレル
４基礎機枠
５ａ固定円盤
５ｂ固定円盤
５ｃ回転円盤
５ｄ回転円盤
６ネジ
７緩衡機構
８回軸中心軸
９ａ小型駆動機
９ｂ小型駆動機
９ｃ小型駆動機
１０ネジ
１１ａ支承盤
１１ｂ支承盤
１２支承コロ
１３軸受
１４原動機
１５摩擦駆動輪
１６接触調整機構
１７ａ小型昇降機
１７ｂ小型昇降機
１８ａ小型昇降機
１８ｂ小型昇降機
１９ａ小型昇降機
１９ｂ小型昇降機[0001]
BACKGROUND OF THE INVENTION
The present invention relates to the maintenance and inspection work in a local power plant of a vertical shaft type water turbine generator, the generator is disassembled in advance, and the rotor side is temporarily taken out of the machine, and then the remaining stator side The present invention relates to a split assembly type work table device that is used for maintenance and inspection work when inspecting and maintaining power generation equipment in the surrounding area of the stator side machine by incorporating this into a cavity portion in the machine.
[0002]
[Prior art]
The maintenance work of the vertical shaft type water turbine generator in this type of conventional power plant involves disassembling the generator in advance and taking the rotor side out of the machine to make it into a hollow state. On the structure in the power plant such as a water turbine barrel located at the bottom, first, a large number of foundation squares, plates, etc. are arranged, and a scaffolding equipment in which a number of iron pipes, treads, etc. are arbitrarily connected to the generator, In the whole area of the scaffolding equipment that is temporarily assembled in the cavity on the stator side in the machine, many workers go up and down on the equipment each time according to the work procedure, and the height of the equipment Scaffolding equipment in a fixed and temporary state that carefully adjusts and maintains a large number of power generation equipment in the surrounding area of the stator side machine of the generator by adjusting the work area or moving the work place All the maintenance work that is difficult and complicated from above depends on human power. It is what was done.
[0003]
[Problems to be solved by the invention]
The maintenance and inspection work of the power generation equipment from above the scaffolding equipment in the state where it is fixedly installed in the cavity part on the conventional generator stator side above, a lot of workers in accordance with the work procedure around the scaffolding equipment. As a result, it is necessary to carry out maintenance and inspection work for many power generation equipment that depends on human power, by going up and down on the equipment each time, adjusting the height of the equipment each time, and moving the work place. In order to wipe out all of this due to the present invention, there was a serious inconvenience that the work date and time and labor were bulky, the work environment was also bad, and the work efficiency was extremely low, In the maintenance and inspection work of the seed shaft type water turbine generator in the local power plant, the generator is disassembled in advance and the rotor side is taken out of the machine once, and then the remaining stator side machine is placed in the remaining stator side machine. In the cavity formed, the maintenance inspection work according to the present invention is performed. In order to be able to incorporate the table device safely and securely, first, in order to eliminate the obstacle due to the size in the transportation work from the production factory of the related members and the assembly work in the power plant, this is configured in a split assembly type At the same time, various factors that depended on the conventional manpower to move up and down the equipment, adjust the height of the equipment, and move the work place in maintenance and inspection work in the generator stator side machine. The work is machineized and automated to greatly improve the work environment in maintenance and inspection work for many generators in the surrounding area in the stator side machine of this type of generator. It is constructed so as to greatly shorten
[0004]
[Means for Solving the Problems]
The object of the present invention is to eliminate the serious inconvenience in the maintenance and inspection work of the vertical shaft type water turbine generator in this type of power plant caused by the scaffold equipment in the fixed and temporary state. That is, it constitutes one of the main inventions according to claim 1 of the work table device for maintenance and inspection of the vertical shaft type water turbine generator according to the present invention, “single raising and lowering a working table in a fixed state vertically. The fixed work table portion (A1) in the "functional work table device" can be divided into appropriate small sections in order to adapt to the transportation work of the related members from the production factory and the assembly work in the power plant. A screwed split assembly type fixed disk is placed on a splittable fixed support part (B1) disposed at the top of the cavity in the stator side machine of the vertical shaft type water turbine generator installed in the power plant. water The fixed support body part (B1), which is fixed to the stationary work table part (A1) horizontally, is maintained for the power generation equipment around the cavity in the stator side machine of the generator. The lifting mechanism part (C) that is arbitrarily moved up and down in accordance with the procedure of the inspection work, in order to adapt the transportation work from the manufacturing factory of the related members and the assembly work in the power plant , A split-type saddle-type foundation in which a small elevator composed of a small hydraulic lifter of X-type prop type that can be stacked in multiple stages is assembled on a power plant structure such as a turbine barrel located at the bottom of the stator side of the generator. For maintenance of the generator, characterized in that it is distributed on the machine frame, and a plurality of them are connected to be able to move up and down at the same time and arranged at the lowermost cavity in the stator side machine of the generator. Product It is a table device.
[0005]
Further, another aspect of the main invention according to claim 2 of the maintenance table work table device of the vertical shaft type water turbine generator of the present invention, comprising “a work table rotatable in the circumferential direction in the vertical direction The rotary work table portion (A2) in the work table device having a combined rotary lift function to be lifted / lowered is divided into small sections appropriate for adapting to the transport work of the related members from the production factory and the assembly work in the power plant. A split assembly type rotating disk screwed in a split manner is disposed at the top of the cavity in the stator side machine of the vertical shaft type water turbine generator installed in the power plant, and the rotary work table portion Rotating type support body part that rotates (A2) horizontally from below while rotating it in the circumferential direction according to the procedure of maintenance and inspection work of the power generation equipment in the cavity peripheral part in the stator side machine of the generator (B2) compact, transportation work and from manufacturing plants that relationship members, in order to accommodate the assembly operation in that power plant, consisting of a plurality of, and a plurality of stages stackable type X strut type compact hydraulic lifter The rotary type work table portion in which the drive unit is arranged in a radially distributed manner on a divided assembly type support board that is screwed so as to be divided into appropriate small sections, and a plurality of the units are rotatably connected at the same time. (A2) It is arranged in the hollow middle part in the stator side machine of the generator below (A2), and the rotary work table part (A2) and the rotary support body part (B2) are also integrated vertically. The lifting mechanism part (C) that is stacked and moved up and down arbitrarily in accordance with the procedure of the maintenance and inspection work of the power generation equipment in the peripheral part of the cavity in the stator side machine of the generator from the manufacturing plant of the related members Transportation work and, in order to accommodate the assembly operation in that power plant, the position of the plurality, and the plurality of stages stacked consisting possible X-type strut type compact hydraulic lifter small elevator to the bottom of the stator side of the generator The generator side of the generator is arranged in a distributed manner on a separable saddle-type base machine frame assembled on a power plant structure such as a water turbine barrel, and a plurality of them are connected to be able to move up and down simultaneously. It is the work table device for the maintenance inspection of the generator, which is arranged at the lowermost cavity in the machine.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 are claims 1 of the work table device for maintenance inspection of a vertical shaft type water turbine generator according to the present invention. 1 is a side view and a plan view showing an example of an implementation of “a work table apparatus having a single lifting function for moving a fixed work table up and down” that constitutes one of the main inventions described in FIG. In the figure, (A1) is a fixed work table portion, (B1) is a fixed support portion, (C) is a lifting mechanism portion, 1 is a stator of a vertical shaft type turbine generator, and 2 is a main shaft of a vertical shaft type turbine. A turbine barrel 3 is constructed of concrete or the like around the main shaft 2 of the vertical shaft type water turbine. 3 and 4 are a side view and a plan view of a saddle-type basic machine casing 4 assembled on a power plant structure such as the turbine barrel 3.
[0007]
Next, the fixed work table portion (A1) and the fixed support body portion (B1) constituting the fixed mold apparatus of the present invention will be described in more detail with reference to FIGS. Most of the diameter of the cavity formed in the stator 1 side machine after the rotor side at the center of the installed vertical shaft type turbine generator is taken out of the machine is around 4m In order to check and maintain the power generation equipment in the peripheral part of the generator on the stator 1 side, the fixed type work An operator is mounted on the table portion (A1), and the components and tools necessary for the maintenance and inspection work of the power generation equipment are arbitrarily moved up and down in accordance with a predetermined work procedure while being mounted thereon. Fixed work table portion (A1) Necessary table dimensions are also inevitably large disks that are commensurate with the diameter of the in-machine cavity on the generator stator 1 side. Therefore, single-plate disks are widely used in general production factories. It can be used for transportation from a manufacturing plant to a local power plant using a 10 ton load truck with a width of about 2.4m, and for assembly into a cavity at the local power plant. Since the size causes a lot of difficulty, the fixed work table part (A1) can be loaded at the production stage as shown in the figure on a normal truck bed of about 10 tons, which is widely used in general production factories. First, a piece divided into small sections consisting of fixed disks 5a, 5b, etc. having a shape of less than 2.4m, such as a half-moon shape, is first manufactured, and then at the assembly stage in the local power plant. Play finally lengthy disk linked by di-6 or the like, division and assembly of the fixed disk 5a, those configured to allow screwed and 5b on the fixed-type working table portions (A1). However, the fixed work table portion (A1) composed of the fixed disks 5a and 5b that are only divided and screwed is difficult to maintain a safe work surface with the structure as it is. This is configured so as to be fixed horizontally on the fixed-type support body portion (B1) manufactured in the structure.
[0008]
The fixed work table portion (A1) composed of the fixed disks 5a and 5b is not shown in the drawing, but a thin plate such as a band iron is wound around the outer periphery of the fixed work table part (A1) slightly higher than the disk plane and mounted on the disk. Needless to say, a safety member or the like for preventing the parts or tools from falling can be easily attached.
[0009]
Next, the fixed work table portion (A1) and the fixed support member portion (B1) constituting the fixed mold apparatus of the present invention are fixed integrally in the vertical direction, and the in-machine cavity on the stator 1 side of the generator. In the case of the lifting mechanism part (C) that moves up and down arbitrarily in accordance with the procedure of maintenance and inspection work, as described in detail in FIG. 7, the fixed work table part (A1) and the fixed support described above are used. As in the case of the body part (B1), in order to adapt to the transportation work from the production factory of the related members and the assembly work in the power plant, as shown in the drawing, a plurality of lifting thrusts of about several tons or less , and a plurality of stages stackable type X strut type compact consisting hydraulic lifter small elevators 17a, 17b, 18a, 18b, 19a, 19b dividable gas type groups assembled on the power plant construction, such as hydraulic turbine barrel 3 Vertically on the machine frame 4, as well as arranged in a dispersed to the right and left, its plurality, and a plurality of stages stackable type X strut type compact hydraulic consisting lifter small elevator 17a, 17b, 18a, 18b, 19a, 19b can be moved up and down at the same time, and connected to each other by a control circuit.
[0010]
Furthermore, the small elevators 17a, 17b, 18a, 18b, 19a, 19b, which are composed of a plurality of X-type strut type small hydraulic lifters that constitute the lifting mechanism portion (C) of the present invention, can be stacked. Corresponding to the lifting stroke required for maintenance and inspection work in the stator 1 side machine of the vertical shaft type water turbine generator installed in the existing hydroelectric power plant, for example, two units are arranged in parallel in the left and right as shown in the figure In response to a case where a small hydraulic lifter having a table area of about 1 m × 2 m and a lifting stroke of about 1.2 m is provided in a plurality of stages, for example, a required lifting stroke of about 3.5 m for maintenance and inspection work, the lifting stroke of about 1.2 m is used. Correspondingly, the small hydraulic lifters are stacked in three stages (Claim 3), and the entire swing phenomenon that is easily caused by the stacking is as shown in the figure. By assembling the right X-type support column in such a manner that the assembly direction of the right X-type support is alternately orthogonal to each other, the expansion of the entire swinging phenomenon caused by the assembly of the X-type support column in the same direction is suppressed. It is comprised as follows.
[0011]
Next, another aspect of the main invention according to claim 2 of the maintenance table work maintenance device of the vertical shaft type water turbine generator of the present invention, comprising “a work table rotatable in the circumferential direction in the vertical direction” FIG. 8 is a side view of FIG. 8 and a plan view of FIG. In the figure, (A2) is a rotary work table portion, (B2) is a rotary support body portion, (C) is a lifting mechanism portion having the same function as that of the above-mentioned fixed type, and 1 is the same as that of the above-mentioned fixed type. The stator of the vertical shaft type turbine generator 2 is the same as the main shaft of the vertical shaft type turbine in the case of the above-mentioned fixed type, and the concrete is also provided around the main shaft 2 of the same vertical shaft type turbine in the case of the aforementioned fixed type. The water turbine barrel 4, etc., is also a vertical base machine frame assembled on the same power plant structure in the case of the fixed type described above. FIGS. 10 and 11 are a plan view and a side view showing an example of implementation of the rotary work table portion (A2), and the configuration thereof is a half-moon-shaped rotary disk 5c, as in the case of the fixed mold described above. In addition to being screwed by screws 6 so that 5d can be divided and assembled, a rotation center shaft 8 provided with a relaxation mechanism 7 in which cushion members such as rubber are arranged radially is mounted at the center of rotation.
[0012]
The rotary work table portion (A2) composed of the rotary discs 5c and 5d is mounted on the disc by winding a thin plate such as a band iron around the outer periphery of the rotary work table portion (A2) slightly higher than the disc plane. Safety members that prevent falling parts and tools etc. can be easily attached, and particularly in the case of this type of rotary work table (A2), the rotating function is effectively used to generate power generation equipment. Mechanically perform auxiliary work such as cutting, polishing, cleaning, painting, etc. accompanying the maintenance and inspection work of the machine, and it can be carried out based on a continuous and efficient work form equipped with electric processing machines etc. Of course.
[0013]
Next, the rotary support body portion (B2) on which the rotary work table portion (A2) composed of the rotary disks 5c and 5d of the present invention device is rotatably mounted will be described in more detail with reference to FIGS. In the case of the rotary support part (B2), the above-mentioned rotary work table part (A2) is horizontally mounted on the upper side, and the rotary work table part (B2) is arbitrarily rotated in the circumferential direction in accordance with the maintenance and inspection work procedure. As in the case of the rotary work table portion (A2) described above, from the geared motor or the like as shown in the figure in order to adapt it to the transportation work of the related members from the production factory or the assembly work in the power plant. A plurality of small driving machines 9a, 9b, and 9c, for example, an iron plate cut out in an octagonal shape or the like, for example, can be loaded on a loading platform of an ordinary truck of about 10 tons. First, a member divided into small sections composed of bearing plates 11a and 11b separated into shapes or the like is manufactured first, and then at the assembly stage, the members are connected to each other with screws 10 or the like so that a required bearing surface can be formed. Along the rotation circumference of the rotary work table portion (A2) mounted above the screwed support plates 11a and 11b including auxiliary members such as other support rollers 12 and the like. The small drive units 9a, 9b, 9c are radially distributed from the bearing 13 that supports the rotation center shaft 8, and the plurality of small drive units 9a, 9b, 9c can be simultaneously rotated. It is configured to be connected by a circuit.
[0014]
Further, the plurality of small driving machines 9a, 9b, 9c are not only provided with a friction drive wheel 15 having elasticity such as rubber tires on a prime mover 14 such as a geared motor, but also on the prime mover 14. In order to exert a smooth contact driving action on the friction drive wheel 15 mounted on the shaft, in order to exhibit a smooth contact driving action corresponding to the distortion that is always present in the rotary disks 5c and 5d constituting the rotary work table portion (A2). The friction drive wheel 15 is slightly lifted toward the upper rotating disks 5c, 5d, and the distortion of the rotating disks 5c, 5d can be moved obliquely upward so that the contact state can be adjusted by the elasticity of a rubber tire or the like. A contact adjusting mechanism 16 equipped with a pedestal or the like is configured to be mounted on each of the small driving machines 9a, 9b, 9c (Claim 5).
[0015]
Next, the rotary work table part (A2) and the rotary support body part (B2) constituting the rotary type device of the present invention are stacked vertically and integrally to form an in-machine cavity on the stator 1 side of the generator. In the case of the elevating mechanism part (C) that is arbitrarily moved up and down in accordance with the procedure of maintenance and inspection work, as described in detail in FIG. 14, the fixed work table part (A1) and the rotary type part described above are used. As with the work table part (A2), fixed-type support part (B1) and rotary-type support part (B2), it is suitable for transporting the related members from the manufacturing plant and for assembly work in the power plant. to, the plurality of degrees elevation thrust tonnage or less as shown, and a plurality of stages stackable type X strut type compact consisting hydraulic lifter small elevators 17a, 17b, 18a, 18b, 19a, 19 Are distributed in the vertical and horizontal directions on a separable saddle-shaped base machine frame assembled on a structure in the power plant such as the turbine barrel 3 and the plurality of small elevators 17a, 17b, 18a, 18b. , 19a, 19b can be moved up and down at the same time, and connected to each other by connecting them with a control circuit.
[0016]
In addition, the small elevators 17a, 17b, 18a, 18b, 19a, and 19b composed of the above-mentioned multiple X-type column type small hydraulic lifters that can be stacked in multiple stages correspond to the lifting strokes required for maintenance and inspection work. The adjustment of the number of stacking stages (Claim 3), the suppression of expansion of the entire swinging phenomenon due to the stacking (Claim 4), etc. Needless to say, the present invention can be applied to any of the work table device and the work table device of the rotary type combined rotation raising / lowering function.
[0017]
【The invention's effect】
As described above, the present invention, in the maintenance and inspection work in the local power plant of the vertical shaft type water turbine generator, in the cavity in the stator side machine of the generator, the fixed work table portion (A1) and the above-mentioned A water turbine barrel in which the rotary work table part (A2), the fixed support part (B1) and the rotary support part (B2) are located at the bottom of the generator side together with the lifting mechanism part (C). Work on the fixed work table part (A1) or the rotary work table part (A2) which is the uppermost part of what is built on top of a saddle-shaped basic machine frame assembled on a power plant structure such as A part of the fixed work table part (A1) and the rotary work table part (A2) are mounted in accordance with a predetermined work procedure by carrying parts and tools necessary for maintenance inspection work of power generation equipment. Move up and down arbitrarily In particular, in the case of the rotary work table portion (A2), it is possible to safely and efficiently carry out maintenance and inspection work in a continuous form from a scaffold that is close to the end by arbitrarily rotating it in the circumferential direction. Since it can be configured as a work table device for maintenance inspection that is suitable for a vertical shaft type turbine generator, it is possible to construct a square member for a base on a structure in a power plant such as a turbine barrel as in the conventional method. A fixed scaffold in which a large number of plates, etc. are lined up, and scaffolding equipment with a number of iron pipes and treads are arbitrarily connected to it is assembled in the in-machine cavity on the generator stator side at an arbitrary height. In the entire area around the equipment, a large number of workers go up and down on the equipment each time according to the work procedure, adjust the height of the equipment each time, move the work place, and fix the generator. Around the periphery of the child aircraft The maintenance and inspection work to carefully inspect and maintain a large number of power generation machines is a work form that is extremely difficult and difficult to work on from the scaffolding equipment in a fixed and temporary state, the working environment is bad, and the work efficiency is extremely low. If there was a serious inconvenience that would become a thing, it will be wiped out by mechanization and automation by introducing the device of the present invention, and the work environment will be greatly improved, work efficiency will be greatly improved, and the work date will be greatly shortened. In addition to achieving the above, the split assembly type configuration of the device of the present invention completely eliminates obstacles due to size during transportation work from related factories and assembly work in the power plant. In this case, the present invention has achieved the results that greatly contribute to the rationalization of the maintenance and inspection work at the field power plant of the seed shaft type water turbine generator. As a result, the lifting mechanism is a small elevator consisting of multiple hydraulic lifters of the X-type strut type that can be stacked in multiple stages, so that transportation work from related factories and assembly work in the power plant In addition to being able to easily adapt to the vertical stroke, the number of stacking stages corresponding to the lifting stroke required for the maintenance inspection work in the fixed pre-machine of the vertical shaft type water turbine generator installed in the existing water conservatory power plant The overall swinging phenomenon that is likely to be caused by the stacking can be dealt with as appropriate, and the assembly direction of the left and right X-type struts of each small elevator is orthogonal to each other at each stage. As a result, the expansion of the entire swing phenomenon caused by the assembly of the X-type support in the same direction can be suppressed. The table portion can be lifted and rotated smoothly and stably, and as a result, maintenance and inspection work can be performed safely and quickly, and the rotary work table by the rotary support body portion. The rotary work table portion and the friction drive via a contact adjustment mechanism that lifts the friction drive wheel having elasticity, such as a rubber tire, mounted on the drive shaft of the rotary support body portion as needed. since the contact driving action between the wheels and adjustable, and has an effect such as possible out be carried out in a stable state the rotation of the rotary work table portion.
[Brief description of the drawings]
FIG. 1 is a side view showing an example of implementation of the entire work table device of the fixed type single lifting function of the present invention.
FIG. 2 is a plan view showing an example of implementation of the entire work table device of the fixed type single lifting function of the present invention.
FIG. 3 is a side view showing an example of implementation of a saddle-type basic machine casing of the present invention.
FIG. 4 is a plan view showing an example of implementation of a saddle-shaped basic machine casing of the present invention.
FIG. 5 is a plan view showing an example of implementation of a fixed work table portion (A1) and a fixed support member portion (B1) according to the present invention.
FIG. 6 is a side view showing an example of implementation of the fixed work table portion (A1) and the fixed support member portion (B1) of the present invention.
FIG. 7 is a side view showing an example when the lifting mechanism portion (C) equipped with the fixed work table portion (A1) and the fixed support portion (B1) according to the present invention is raised.
FIG. 8 is a side view showing an example of the implementation of the entire work table device of the rotary type composite rotary lifting function of the present invention.
FIG. 9 is a plan view showing an example of the implementation of the entire work table device of the rotary type composite rotary lifting function of the present invention.
FIG. 10 is a plan view showing an example of implementation of the rotary work table portion (A2) of the present invention.
FIG. 11 is a side view showing an example of implementation of the rotary work table portion (A2) of the present invention.
FIG. 12 is a plan view showing an example of implementation of the rotary support body portion (B2) of the present invention.
FIG. 13 is a side view showing an example of the implementation of the rotary bearing part (B2) of the present invention.
FIG. 14 is a side view showing an example when the lifting mechanism portion (C) mounted with the rotary work table portion (A2) and the rotary support body portion (B2) of the present invention is raised.
[Explanation of symbols]
A1 Fixed type work table part A2 Rotary type work table part B1 Fixed type support body part B2 Rotary type support body part C Lifting mechanism part 1 Stator of vertical shaft type turbine generator 2 Main shaft of vertical type turbine turbine 3 Turbine barrel 4 Basic Machine frame 5a Fixed disk 5b Fixed disk 5c Rotating disk 5d Rotating disk 6 Screw 7 Relief mechanism 8 Rotating shaft central axis 9a Small drive machine 9b Small drive machine 9c Small drive machine 10 Screw 11a Bearing board 11b Bearing disk 12 Bearing roller 13 Bearing 14 prime mover 15 friction drive wheel 16 contact adjustment mechanism 17a small elevator 17b small elevator 18a small elevator 18b small elevator 19a small elevator 19b small elevator

Claims

The fixed work table portion (A1) that constitutes the apparatus on the work table for maintenance and inspection of the generator is appropriately small in order to adapt it to the transportation work of the related members from the production factory and the assembly work in the power plant. A split-type fixed support body disposed at the top of a cavity in a stator side machine of a vertical shaft type water turbine generator in which a split assembly type fixed disk screwed so as to be divided into sections is installed in the power plant. The fixed-type support body portion (B1) fixed horizontally on the portion (B1) and horizontally fixed to the fixed-type work table portion (A1) is arranged around the cavity in the stator side machine of the generator The elevating mechanism part (C) that can be moved up and down arbitrarily according to the maintenance inspection procedure of the power generation equipment in the section is suitable for the transportation work of the related members from the production factory and the assembly work in the power plant To assemble on a plurality of, and a plurality of stages stackable in the NPS constructs waterwheel barrel such that the X-type small elevator consisting strut type compact hydraulic lifter at the bottom of the stator side of the generator was dividable dispersed in gas type of the basic machine frame on which are arranged, and the Rukoto plurality is not arranged vertically movably twin to the cavity bottom of the stator side flight of the generator at the same time A work table device for generator inspection and maintenance.

The rotary work table portion (A2) that constitutes the work table device for maintenance and inspection of the generator has an appropriate small section in order to adapt it to the transportation work of the related members from the production factory and the assembly work in the power plant. A split assembly type rotating disk screwed in such a manner that it can be divided one by one is arranged at the top of the cavity in the stator side machine of the vertical shaft type water turbine generator installed in the power plant, and the rotary work table Rotating type support body part that rotates the part (A2) in the circumferential direction while horizontally supporting the part (A2) in accordance with the procedure of the maintenance and inspection work of the power generation equipment in the periphery of the cavity in the stator side machine of the generator (B2) is screwed so as to be able to divide a plurality of small drive units into appropriate small sections in order to adapt to the transportation work of the related members from the manufacturing factory and the assembly work in the power plant. In the stator side machine of the generator below the rotary type work table portion (A2), the plurality of units are arranged in a radially dispersed manner on the divided assembly type support board, and a plurality of the units are rotatably connected at the same time. Further, the rotary work table portion (A2) and the rotary support body portion (B2) are stacked one above the other in the middle of the cavity to form a cavity peripheral portion in the stator side machine of the generator. The lifting mechanism part (C) that can be moved up and down arbitrarily according to the procedure of maintenance and inspection work for a certain power generation equipment, in order to adapt it to the transport work from the production factory of the related members and the assembly work in the power plant, a plurality of, and set a plurality of stages stackable type X small elevator consisting strut type compact hydraulic lifter on top of the power station constructs waterwheel barrel such that at the bottom of the stator side of the generator Are arranged distributed on the foundation machine frame erected dividable gas type, and the plurality is that are located in a cavity at the bottom of the stator side flight of the generator is simultaneously movable vertically twin A work table device for maintenance inspection of a generator.

3. The power generation according to claim 1, wherein the lifting mechanism portion (C) is configured to appropriately stack a plurality of stages of the small elevators corresponding to a required lifting stroke for maintenance and inspection work of the generator. Work table device for machine maintenance inspection.

The lifting / lowering mechanism portion (C) is configured to suppress the expansion of the entire swinging phenomenon by alternately making the assembly directions of the left and right X-type struts of the small elevators stacked in a plurality of stages alternately at each stage. The work table apparatus for maintenance inspection of the generator according to claim 1 or 2 .

Friction drive wheels having elasticity such as rubber tires mounted on the drive shaft of the rotary type support body part (B2) by rotating the rotary type work table part (A2) by the rotary type support body part (B2). The work table for maintenance and inspection of a generator according to claim 2, wherein the contact drive action between the rotary work table portion (A2) and the friction drive wheel can be adjusted via a contact adjustment mechanism that lifts the upper part appropriately upward. apparatus.