JP3974956B2

JP3974956B2 - Hydraulic pressure source device

Info

Publication number: JP3974956B2
Application number: JP10345196A
Authority: JP
Inventors: 直治北川
Original assignee: Toyooki Kogyo Co Ltd
Current assignee: Toyooki Kogyo Co Ltd
Priority date: 1996-03-28
Filing date: 1996-03-28
Publication date: 2007-09-12
Anticipated expiration: 2016-03-28
Also published as: JPH09264289A

Description

【０００１】
【発明の属する技術分野】
本発明は、液圧ポンプとこれを駆動する電動機とを、タンクの内部へ貯蔵する作動液体に浸漬して縦置き配置した液圧源装置に関する。
【０００２】
【従来の技術】
従来、この種の液圧源装置として、作動液体を貯蔵したタンクの内部に、液圧ポンプとこれを駆動する電動機とを作動液体に浸漬して縦置き配置して設け、液圧源装置の占有床面積の減少を図っているものが知られている。（例えば、特開昭６３−２６８９８３号公報参照。）
【０００３】
【発明が解決しようとする課題】
ところが、かかる従来の液圧源装置では、液圧源装置の占有床面積を増加しないようタンクの上部開口を閉塞する上蓋に附属機器の一つであるエレベータ昇降用制御弁を配置しているため、液圧ポンプや電動機の修理や補修の際には、附属機器を配置した上蓋を取り外してタンクの上部開口から液圧ポンプや電動機をタンク外部に取り出さなければならず、上蓋は附属機器を配置して取扱い難かった。
【０００４】
本発明は、液圧ポンプとこれを駆動する電動機とを縦置き配置して占有床面積の減少を図りつつ、取り扱い易い上蓋を取り外して液圧ポンプや電動機をタンクの上部開口からタンク外部に取り出し可能にし、取り扱い性を向上し得る液圧源装置を提供することを課題としている。
【０００５】
【課題を解決するための手段】
本発明の液圧源装置では、上部を開口し略箱状に形成したタンクに液圧ポンプで吸入吐出する作動液体を貯蔵して設け、タンクの一隅を窪ませてタンク内部と遮断すると共に垂直方向の上下を開口してタンク外部に露呈する凹部を形成し、タンクの内部を液圧ポンプ及びこれを駆動する電動機を作動液体に浸漬して縦置き配置する第１タンク部とこの側方に連設して凹部に隣接する第２タンク部で構成し、タンクの上部開口を閉塞する上蓋を第１タンク部の上部開口を閉塞する第１上蓋と第２タンク部の上部開口を閉塞する第２上蓋とにより別部材で構成し、凹部に附属機器として液圧ポンプのドレン液体をファンで発生させる風により空冷する液体冷却器を配置し、液体冷却器はファンで発生させる風を第１タンク部の側壁外表面に当てるよう位置して成る。この場合、タンクの一側壁を形成する側板を延在して凹部の一側壁を形成しても良い。また、第２タンク部に貯蔵する作動液体の液面に浮くフロートの変位に基づき貯蔵する作動液体量を表示する液面計を第２上蓋に配置しても良い。また、凹部の上部開口を第２タンク部の上部開口を閉塞する第２上蓋で閉塞しても良い。
【０００６】
かかる本発明の構成において、附属機器をタンクの凹部に配置しているから、液圧ポンプや電動機を内部に縦置き配置したタンクの第１タンク部の上部開口を閉塞する第１上蓋には附属機器を配置しなくて良い。このため、液圧ポンプとこれを駆動する電動機を縦置き配置して占有床面積の減少を図りつつ、附属機器を配置せずに取り扱い易くできた上蓋を取り外して液圧ポンプや電動機をタンクの上部開口からタンク外部に取り出し可能にでき、取り扱い性を向上できる。
【０００７】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて説明する。
図１、図２及び図６において、１はタンクで、上部を開口し略箱状に形成し、内部に作動液体としての作動油を貯蔵して設けている。２は作動油を吸入吐出する液圧ポンプとしての油圧ポンプ、３は油圧ポンプ２を駆動する電動機で、相互に一体結合し、油圧ポンプ２を上方で電動機３を下方にしてタンク１内部に作動油へ浸漬して縦置き配置して設けている。４は油圧ポンプ２、電動機３をタンク１内部に縦置き配置するための保持枠で、図２に示す如き、上板５Ａの中央に縦板６Ａを垂下して溶接で固着した略Ｔ字状の吊り下げ部７Ａと、この吊り下げ部７Ａと図１の水平方向に間隙を有して対向した吊り下げ部７Ｂ（上板５Ｂの中央から縦板６Ｂを垂下して略Ｔ字状に形成）とを、両部７Ａ、７Ｂの下端を水平板８に溶接で固着して構成している。そして、吊り下げ部７Ａには縦板６Ａに止め板９を溶接で固着し、油圧ポンプ２と一体結合した電動機３を両吊り下げ部７Ａ、７Ｂ間の間隙に収装してボルトで止め板９に固定している。
【０００８】
タンク１の対向する側壁内表面には載置板１０Ａ、１０Ｂを溶接で固着して内方に突出して設け、載置板１０Ａ、１０Ｂには保持枠４の上板５Ａ、５Ｂの長さ寸法と略同一の間隙を有してそれぞれ２個の防振ゴム１１Ａ、１１Ｂを取り付け、防振ゴム１１Ａ、１１Ｂ上に保持枠４の上板５Ａ、５Ｂを載置してボルト１２Ａ、１２Ｂで着脱自在に固定して設けている。載置板５Ａ、５Ｂの中央には、図２及び図３に示す如き、保持枠４の縦板６、６Ｂを挿通する切欠き１３Ａ、１３Ｂを形成し、切欠き１３Ａ、１３Ｂは油圧ポンプ２、電動機３を収装した保持枠４をタンク１の上部開口から図示しないホイスト等適宜手段で吊り上げてタンク１外部に取り出す際に載置板５Ａ、５Ｂが障害にならないよう設けている。１４Ａ、１４Ｂは上板５Ａ、５Ｂと同一形状の持ち上げ板で、保持枠４を載置板１０Ａ、１０Ｂに載置固定して油圧ポンプ２、電動機３を作動油に浸漬して縦置き配置した図示状態では、上板５Ａ、５Ｂに重ね合わせてボルト１２Ａ、１２Ｂで着脱自在に固定して設けている。そして、持ち上げ板１４Ａ、１４はホイスト等で油圧ポンプ２、電動機３をタンク１外部に取り出した状態で保持枠４の底板８に図示しないボルトで固定し、底板８に固定した持ち上げ板１４Ａ、１４Ｂは防振ゴム１１Ａ、１１Ｂ上にボルト１２Ａ、１２Ｂで固定して設ける。
【０００９】
１５はタンク１の一隅を窪ませて形成した凹部で、タンク１内部と遮断すると共に、垂直方向の上下及び水平方向の一側を開口してタンク１外部に露呈して設けている。図３に示す如き、凹部１５の一側壁１５Ａはタンク１の一側壁１Ａを形成する側板を水平方向に延在して形成している。タンク１は内部を油圧ポンプ２、電動機３を縦置き配置する第１タンク部１Ｂとこの側方に連設して凹部１５に隣接する第２タンク部１Ｃで構成している。１６は凹部１５に配置した附属機器としての液体冷却器で、凹部１５の両側壁１５Ａ、１５Ｂに両端を溶接で固着して水平方向に掛け渡した取り付け板１７の下面に固定して設けている。液体冷却器１６は油圧ポンプ２のドレン液体としてのドレン油をファン１６Ａで発生する風により冷却するもので、図４に示す如き、油圧ポンプ２からのドレン油を導入するドレン油導入管２Ａを取り付け板１７の上面へ水平方向の一側に取り付けて接続すると共に、冷却したドレン油を第１タンク部１Ｃに導出するドレン油導出管２Ｂを取り付け板１７の上面へ水平方向の他側に取り付けて接続して設けている。そして、液体冷却器１６はファン１６Ａで発生する風を油圧ポンプ２、電動機３を内部に配置した第１タンク部１Ｂの側壁外表面に当てるよう凹部１５にファン１６Ａを内方に位置して配置している。
【００１０】
図５に示す如き、１８Ａは第１タンク部１Ｂの上部開口を閉塞する第１上蓋で、４本のボルト１９Ａで第１タンク部１Ｂに着脱自在に取り付けている。１８Ｂは第２タンク部１Ｃの上部開口を閉塞する第２上蓋で、第１上蓋１８Ａと別部材で構成して４本のボルト１９Ｂで第２タンク部１Ｃに着脱自在に取り付けている。そして、第２上蓋１８Ｂは第２タンク部１Ｃに隣接する凹部１５の上部開口を併せて閉塞する寸法形状に設けている。図３に示す如き、第１タンク部１Ｂの対向する側壁内表面にはそれぞれ１本のボルト１９Ａを螺着するねじ孔を穿設した取り付け板２０Ａ、２０Ｂを溶接で固着して内方に突出して設け、取り付け板２０Ｂは第２タンク部１Ｃに延在してこの延在部分に１本のボルト１９Ｂを螺着するねじ孔を穿設している。取り付け板２０Ｂの延在部分と対向する凹部１５の一側壁１５Ａ内表面には、１本のボルト１９Ａと２本のボルト１９Ｂを螺着する３個のねじ孔を穿設した取り付け板２０Ｃを溶接で固着して内方に突出して設けている。また、第１タンク部１Ｂと第２タンク部１Ｃとの連設部分には垂直方向の最上部に受け板２０Ｄを溶接で固着して設け、受け板２０Ｄには１本のボルト１９Ａと１本のボルト１９Ｂを螺着する２個のねじ孔を穿設すると共に、第１上蓋１８Ａ及び第２上蓋１８Ｂの端部を載置して設けている。
【００１１】
２１は第２上蓋１８Ｂに配置した液面計としての油面計で、第２タンク部１Ｃ内部に貯蔵した作動油の液面としての油面Ｌに浮くフロート２２を有し、フロート２２の垂直方向の変位を連結棒２３を介して第２上蓋１８Ｂ上の表示部に伝達し、フロート２２の変位に基づき貯蔵する作動油量を表示している。２４は端子箱で、第２上蓋１８Ｂに凹部１５の上部開口を閉塞する部分へ配置し、電動機３の図示しない電機配線及び液体冷却器１６のファン１６Ａを駆動する電動機１６Ｂ（図６に示す）の電機配線を外部配線と電機接続して設けている。２５は第１上蓋１８Ａに着脱自在に取り付けた注油蓋で、作動油を注油する注油口を閉塞して設けている。２６は油圧ポンプ２に接続した吸入管、２７は油圧ポンプ２に接続した吐出管で、吐出管２７はタンク１の一側壁１Ａよりタンク１外部に露呈して接続部を有し、図示しないアクチュエータへの接続管を接続可能に設けている。２８は吐出管２７に分岐接続した圧力計、２９はアクチュエータから排出する作動油をタンク１内部に還流する戻り管で、タンク１の一側壁１Ａにタンク１外部へ露呈して接続部を有し、アクチュエータからの戻り管を接続可能に設けている。
【００１２】
次に、かかる構成の作動を説明する。
図示状態において、電動機３で油圧ポンプ２を駆動すると、油圧ポンプ２は吸入管２６より貯蔵した作動油を吸入して吐出管２７に吐出し、吐出管２７に吐出した作動油はアクチュエータに供給され、アクチュエータから排出する作動油は戻り管２９を流れてタンク１内部に還流する。そして、貯蔵する作動油量は油面計２１で確認されると共に、油圧ポンプ２のドレン油はドレン油導入管２Ａを流れて液体冷却器１６に導入しファン１６Ａで発生する風で冷却し、冷却したドレン油はドレン油導出管２Ｂを流れてタンク１内部に導出する。また、液体冷却器１６のファン１６Ａで発生した風は第１タンク部１Ｂの側壁外表面に当たり、油圧ポンプ２及び電動機３の作動に伴う作動熱で油温上昇する第１タンク部１Ｂ内部の貯蔵作動油を冷却する。そして、電動機３による油圧ポンプ２の駆動を停止すると、油圧ポンプ２は作動油の吸入吐出を停止する。
【００１３】
そして、油圧ポンプ２や電動機３を修理や補修の際には、ボルト１９Ａを緩めて第１上蓋１８Ａを取り外し、ボルト１２Ａ、１２Ｂを緩めて持ち上げ板１４Ａ、１４Ｂを取り外し、ホイスト等で保持枠４とともに油圧ポンプ２、電動機３を吊り上げて第１タンク部１Ｂの上部開口よりタンク１外部に取り出し、この状態で、保持枠４の底板８にボルトで持ち上げ板１４Ａ、１４Ｂを固定し、ホイスト等で保持枠４を若干下降して底板８に固定した持ち上げ板１４Ａ、１４Ｂを載置板１０Ａ、１０Ｂの防振ゴム１１Ａ、１１Ｂ上に載置してボルト１２Ａ、１２Ｂで固定すると、油圧ポンプ２、電動機３をタンク１外部に取り出した状態で保持枠４を載置板１０Ａ、１０Ｂ上に固定でき、ホイスト等を切り離す。そして、止め板９にボルトで固定した電動機３を油圧ポンプ２とともに取り外して修理や補修を行う。
【００１４】
油圧ポンプ２や電動機３の修理や補修が完了したら、止め板９に電動機３を油圧ポンプ２とともにボルトで固定し、ボルト１２Ａ、１２Ｂを緩めてホイスト等で保持枠４とともに油圧ポンプ２、電動機３を若干吊り上げて持ち上げ板１４Ａ、１４Ｂを載置板１０Ａ、１０Ｂから取り外し、この状態で持ち上げ板１４Ａ、１４Ｂを保持枠４の底板８から取り外し、ホイスト等で保持枠４とともに油圧ポンプ２、電動機３を第１タンク部１Ｂの上部開口より下降して保持枠４の上板５Ａ、５Ｂを載置板１０Ａ、１０Ｂの防振ゴム１１Ａ、１１Ｂ上に載置し、上板５Ａ、５Ｂに持ち上げ板１４Ａ、１４Ｂを重ね合わせ、ボルト１２Ａ、１２Ｂで固定する。そして、第１上蓋１８Ａをボルト１９Ａでタンク１に取り付けて第１タンク部１Ｂの上部開口を閉塞する。
【００１５】
かかる作動で、油圧ポンプ２、電動機３をタンク１外部に取り出す際、附属機器（液体冷却器１６）をタンク１の凹部１５に配置しているから、油圧ポンプ２や電動機３を縦置き配置したタンク１の上部開口を閉塞する上蓋（第１上蓋１８Ａ）には附属機器（液体冷却器１６）を配置しなくて良いため、油圧ポンプ２とこれを駆動する電動機３を縦置き配置して占有面積の減少を図りつつ、附属機器を配置せずに取り扱い易くできた上蓋（第１上蓋１８Ａ）を取り外して油圧ポンプ２や電動機３をタンク１の上部開口からタンク１外部に取り出しでき、取り扱い性を向上できる。
【００１６】
また、タンク１の一側壁１Ａを形成している側板を延在して凹部１５の一側壁１５Ａを形成しているため、凹部１５の一側壁１５Ａを格別に形成しなくて良く、製作し易くできて廉価に製作できる。
【００１７】
また、タンク１の内部を油圧ポンプ２及び電動機３を縦置き配置する第１タンク部１Ｂとこの側方に連設して凹部１５に隣接する第２タンク部１Ｃで構成し、上蓋を第１タンク部１Ｂの上部開口を閉塞する第１上蓋１８Ａと第２タンク部１Ｃの上部開口を閉塞する第２上蓋１８Ｂにより別部材で構成しているため、油圧ポンプ２、電動機３をタンク１外部に取り出す際、第２上蓋１８Ｂはそのままで第１上蓋１８Ａのみを取り外せば良く、第１上蓋１８Ａは第１タンク部１Ｂの上部開口を閉塞するもので、タンク１の上部開口全体を閉塞する上蓋と比べて小形状にでき、一層取り扱い易くできる。
【００１８】
また、油圧ポンプ２のドレン油をファン１６Ａで発生させる風により冷却する液体冷却器１６を、ファン１６Ａで発生させる風を油圧ポンプ２及び電動機３を配置した第１タンク部１Ｂの側壁外表面に当てるよう凹部１５に配置しているため、油圧ポンプ２のドレン油を冷却する液体冷却器１６で、油圧ポンプ２及び電動機３の作動に伴う作動熱で油温上昇する第１タンク部１Ｂの貯蔵作動油も冷却することができる。
【００１９】
また、第２タンク部１Ｃに貯蔵する作動油の油面Ｌに浮くフロート２２の変位に基づき貯蔵する作動油量を表示する油面計２１を第２上蓋１８Ｂに配置しているため、第１タンク部１Ｂに配置した油圧ポンプ２による作動油の吸入吐出に伴う第１タンク部１Ｂの油面Ｌの一時的な過剰な変位がフロート２２に伝わり難くでき、貯蔵する作動油量を大きく間違えることなく確認できる。さらに、油圧ポンプ２、電動機３をタンク１外部に取り出すために第１上蓋１８Ａを取り外す際、第２上蓋１８Ｂに配置した油面計２１は影響を受けることなくできる。
【００２０】
また、凹部１５の上部開口を第２タンク部１Ｃの上部開口を閉塞する第２上蓋で閉塞しているため、凹部１５の上部開口を閉塞する蓋を格別に設けることなく第２上蓋１８Ｂに凹部１５の上部開口を閉塞する部分へ配置スペースを確保することができ、この配置スペースに端子箱２４を配置して有効活用が図れる。
【００２１】
【発明の効果】
このように、本発明は、タンクの一隅を窪ませて形成した凹部に附属機器を配置したことにより、タンクの上部開口を閉塞する上蓋には附属機器を配置しなくて良く、液圧ポンプとこれを駆動する電動機を縦置き配置して占有床面積の減少を図りつつ、附属機器を配置せずに取り扱い易くできた上蓋を取り外して液圧ポンプや電動機をタンクの上部開口からタンク外部に取り出し可能にでき、取り扱い性を向上できる。
【００２２】
また、タンクの一側壁を形成する側板を延在して凹部の一側壁を形成した構造を採用することによって、凹部の一側壁を格別に形成しなくて良く、製作し易くできて廉価に製作できる。
【００２３】
また、タンクの内部を液圧ポンプ及び電動機を縦置き配置する第１タンク部とこの側方に連設して凹部に隣接する第２タンク部で構成し、上蓋を第１タンク部の上部開口を閉塞する第１上蓋と第２タンク部の上部開口を閉塞する第２上蓋により別部材で構成した構造を採用することによって、液圧ポンプや電動機をタンク外部に取り出す際、第２上蓋はそのままで第１上蓋のみを取り外せば良く、第１上蓋は第１タンク部の上部開口を閉塞するもので、タンクの上部開口全体を閉塞する上蓋と比べて小形状にでき、一層取り扱い易くできる。
【００２４】
また、凹部に配置した附属機器が液圧ポンプのドレン液体を導入してファンで発生させる風により冷却する液体冷却器で、ファンで発生させる風を液圧ポンプ及び電動機を配置した第１タンク部の側壁外表面に当てるよう凹部に配置した構造を採用することによって、液圧ポンプのドレン液体を冷却する液体冷却器で、液圧ポンプ及び電動機の作動に伴う作動熱で温度上昇する第１タンク部の貯蔵作動液体も冷却することができる。
【００２５】
また、第２タンク部に貯蔵する作動液体の液面に浮くフロートの変位に基づき貯蔵する作動液体量を表示する液面計を第２上蓋に配置した構造を採用することによって、第１タンク部に配置した液圧ポンプによる作動液体の吸入吐出に伴う第１タンク部の液面の一時的な過剰な変位がフロートに伝わり難くでき、貯蔵する作動液体量を大きく間違えることなく確認できる。さらに、液圧ポンプや電動機をタンク外部に取り出すために第１上蓋を取り外す際、第２上蓋に配置した液面計は影響を受けることなくできる。
【００２６】
また、凹部の上部開口を第２タンク部の上部開口を閉塞する第２上蓋で閉塞した構造を採用することによって、凹部の上部開口を閉塞する蓋を格別に設けることなく第２上蓋に凹部の上部開口を閉塞する部分へ配置スペースを確保することができ、この配置スペースの有効活用が図れる。
【図面の簡単な説明】
【図１】本発明の実施の形態を示した液圧源装置の縦断面図である。
【図２】図１の線Ａ−Ａに沿った断面図である。
【図３】図１の線Ｂ−Ｂに沿った断面図である。
【図４】第１の矢視Ｃから見た側面図である。
【図５】図１の矢視Ｄから平面図である。
【図６】図１の液圧源装置の液圧回路図である。
【符号の説明】
１タンク
１Ｂ第１タンク部
１Ｃ第２タンク部
２油圧ポンプ（液圧ポンプ）
３電動機
１５凹部
１６液体冷却器
１６Ａファン
１８Ａ第１上蓋
１８Ｂ第２上蓋
２１油面計（液面計）
２２フロート
Ｌ油面（液面）[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hydraulic pressure source device in which a hydraulic pump and an electric motor that drives the hydraulic pump are immersed in a working liquid stored in a tank and placed vertically.
[0002]
[Prior art]
Conventionally, as this type of hydraulic pressure source device, a hydraulic pump and an electric motor that drives the hydraulic pump are immersed in the working liquid and vertically arranged in a tank that stores the working liquid. Those that reduce the occupied floor area are known. (For example, see Japanese Patent Laid-Open No. 63-268983.)
[0003]
[Problems to be solved by the invention]
However, in such a conventional hydraulic pressure source device, an elevator raising / lowering control valve, which is one of the attached devices, is arranged on the upper lid that closes the upper opening of the tank so as not to increase the occupied floor area of the hydraulic pressure source device. When repairing or repairing the hydraulic pump or electric motor, the upper lid where the attached equipment is placed must be removed and the hydraulic pump or electric motor must be taken out of the tank through the upper opening of the tank. It was difficult to handle.
[0004]
In the present invention, a hydraulic pump and an electric motor that drives the hydraulic pump are arranged vertically to reduce the occupied floor area, and an easy-to-handle top cover is removed, and the hydraulic pump and the electric motor are taken out from the upper opening of the tank to the outside of the tank. It is an object of the present invention to provide a hydraulic pressure source device that can be improved and can be handled.
[0005]
[Means for Solving the Problems]
Vertical with the liquid pressure source apparatus of the present invention, provided storing the working liquid to suction and discharge at the hydraulic pump to a tank formed in opening the upper substantially box-shaped, and blocked inside the tank by depressing one corner of the tank A first tank portion that is vertically disposed by immersing a hydraulic pump and an electric motor for driving the inside of the tank in a working liquid. A second tank part that is provided in a row and is adjacent to the concave part, and an upper lid that closes the upper opening of the tank is a first upper lid that closes the upper opening of the first tank part and an upper opening that closes the upper opening of the second tank part. 2 A liquid cooler that is composed of a separate member with an upper lid and that is air-cooled with wind generated by a fan to generate drain liquid of a hydraulic pump as an accessory device in the recess . The liquid cooler is a first tank that generates wind generated by the fan. Against the outer surface of the side wall Formed by cormorants position. In this case, the side plate forming one side wall of the tank may be extended to form one side wall of the recess. Further , a liquid level gauge that displays the amount of working liquid stored based on the displacement of the float floating on the liquid level of the working liquid stored in the second tank unit may be disposed on the second upper lid. Further, it may be closed by a second lid for closing the upper opening of the second tank portion on the portion apertures of the recess.
[0006]
In such a configuration of the present invention, since the accessory device is disposed in the concave portion of the tank, the first upper lid that closes the upper opening of the first tank portion of the tank in which the hydraulic pump and the electric motor are vertically disposed is attached. There is no need to place equipment. For this reason, the hydraulic pump and the electric motor that drives it are placed vertically to reduce the occupied floor area, and the upper lid that can be handled easily without the attachment of equipment is removed, and the hydraulic pump and electric motor are installed in the tank. It can be taken out of the tank from the upper opening, and the handleability can be improved.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1, 2, and 6, reference numeral 1 denotes a tank, which is formed in a substantially box shape with an upper portion opened, and stores hydraulic oil as a working liquid therein. 2 is a hydraulic pump as a hydraulic pump that sucks and discharges hydraulic oil, 3 is an electric motor that drives the hydraulic pump 2, and is integrally coupled to operate inside the tank 1 with the hydraulic pump 2 upward and the electric motor 3 downward. It is soaked in oil and placed vertically. Reference numeral 4 denotes a holding frame for vertically arranging the hydraulic pump 2 and the electric motor 3 in the tank 1, and as shown in FIG. 2, the vertical plate 6A is suspended from the center of the upper plate 5A, and is fixed by welding. 1A, and the suspended portion 7B opposite to the suspended portion 7A with a gap in the horizontal direction of FIG. 1 (the vertical plate 6B is suspended from the center of the upper plate 5B to form a substantially T-shape. ) Are fixed to the horizontal plate 8 by welding at the lower ends of both portions 7A and 7B. Then, a stop plate 9 is fixed to the vertical plate 6A by welding to the hanging portion 7A, and the electric motor 3 integrally coupled with the hydraulic pump 2 is accommodated in a gap between both the hanging portions 7A and 7B and is fixed with a bolt. 9 is fixed.
[0008]
Mounting plates 10A and 10B are fixed to the inner surface of the opposite side wall of the tank 1 by welding and protruded inward, and the lengths of the upper plates 5A and 5B of the holding frame 4 are provided on the mounting plates 10A and 10B. Are attached with two vibration isolating rubbers 11A and 11B with substantially the same gap, and the upper plates 5A and 5B of the holding frame 4 are mounted on the anti-vibration rubbers 11A and 11B, and are attached and detached with bolts 12A and 12B. Freely fixed. As shown in FIGS. 2 and 3, notches 13A and 13B are formed in the center of the mounting plates 5A and 5B to pass through the vertical plates 6 and 6B of the holding frame 4, and the notches 13A and 13B are formed in the hydraulic pump 2. The mounting plates 5A and 5B are provided so as not to become an obstacle when the holding frame 4 housing the electric motor 3 is lifted from the upper opening of the tank 1 by a suitable means such as a hoist (not shown) and taken out from the tank 1. 14A and 14B are lifting plates having the same shape as the upper plates 5A and 5B. The holding frame 4 is mounted and fixed on the mounting plates 10A and 10B, and the hydraulic pump 2 and the electric motor 3 are immersed in the working oil and arranged vertically. In the state shown in the figure, the upper plates 5A and 5B are superposed on the upper plates 5A and 5B and are detachably fixed with bolts 12A and 12B. The lifting plates 14A and 14 are fixed to the bottom plate 8 of the holding frame 4 with bolts (not shown) while the hydraulic pump 2 and the electric motor 3 are taken out of the tank 1 by a hoist or the like, and the lifting plates 14A and 14B fixed to the bottom plate 8 are fixed. Are fixed on the anti-vibration rubbers 11A and 11B with bolts 12A and 12B.
[0009]
Reference numeral 15 denotes a recess formed by recessing one corner of the tank 1, which is cut off from the inside of the tank 1 and is provided to be exposed to the outside of the tank 1 by opening up and down in the vertical direction and one side in the horizontal direction. As shown in FIG. 3, one side wall 15 A of the recess 15 is formed by extending a side plate that forms one side wall 1 A of the tank 1 in the horizontal direction. The tank 1 includes a hydraulic tank 2 and a first tank portion 1B in which the electric motor 3 is arranged vertically, and a second tank portion 1C adjacent to the concave portion 15 connected to the side. Reference numeral 16 denotes a liquid cooler as an accessory device disposed in the recess 15, which is fixedly provided on the lower surface of the mounting plate 17, which is secured to both side walls 15 A and 15 B of the recess 15 by welding and spanned in the horizontal direction. . The liquid cooler 16 cools the drain oil as the drain liquid of the hydraulic pump 2 by the wind generated by the fan 16A, and a drain oil introduction pipe 2A for introducing the drain oil from the hydraulic pump 2 as shown in FIG. Attach and connect to the upper surface of the mounting plate 17 on one side in the horizontal direction, and attach the drain oil outlet pipe 2B for leading the cooled drain oil to the first tank portion 1C on the other side in the horizontal direction on the upper surface of the mounting plate 17 Connected. The liquid cooler 16 is arranged with the fan 16A positioned inward in the recess 15 so that the wind generated by the fan 16A is applied to the outer surface of the side wall of the first tank 1B in which the hydraulic pump 2 and the electric motor 3 are disposed. is doing.
[0010]
As shown in FIG. 5, 18A is a first upper lid that closes the upper opening of the first tank portion 1B, and is detachably attached to the first tank portion 1B with four bolts 19A. Reference numeral 18B denotes a second upper lid that closes the upper opening of the second tank portion 1C. The second upper lid 18B is configured as a separate member from the first upper lid 18A and is detachably attached to the second tank portion 1C with four bolts 19B. And the 2nd upper cover 18B is provided in the dimension shape which obstruct | occludes collectively the upper opening of the recessed part 15 adjacent to 1 C of 2nd tank parts. As shown in FIG. 3, mounting plates 20A and 20B each having a screw hole into which one bolt 19A is screwed are fixed to the inner surface of the opposing side wall of the first tank portion 1B by welding, and projecting inwardly. The mounting plate 20B extends to the second tank portion 1C and has a screw hole for screwing one bolt 19B into the extended portion. A mounting plate 20C having three screw holes into which one bolt 19A and two bolts 19B are screwed is welded to the inner surface of one side wall 15A of the recess 15 facing the extending portion of the mounting plate 20B. It sticks with and protrudes inward. In addition, a receiving plate 20D is fixed to the uppermost portion in the vertical direction by welding at the connecting portion of the first tank portion 1B and the second tank portion 1C, and one bolt 19A and one are provided on the receiving plate 20D. Two screw holes to which the bolts 19B are screwed are formed, and the end portions of the first upper lid 18A and the second upper lid 18B are placed and provided.
[0011]
21 is an oil level gauge as a liquid level gauge arranged on the second upper lid 18B, and has a float 22 that floats on the oil level L as the liquid level of the hydraulic oil stored inside the second tank portion 1C. The displacement in the direction is transmitted to the display unit on the second upper lid 18B via the connecting rod 23, and the amount of hydraulic oil to be stored based on the displacement of the float 22 is displayed. Reference numeral 24 denotes a terminal box, which is disposed in a portion of the second upper lid 18B where the upper opening of the recess 15 is closed, and an electric motor 16B (shown in FIG. 6) that drives an electric wiring (not shown) of the electric motor 3 and a fan 16A of the liquid cooler 16. The electrical wiring is provided in electrical connection with external wiring. Reference numeral 25 denotes an oiling lid that is detachably attached to the first upper lid 18 A, and is provided with an oiling port for lubricating the working oil closed. 26 is a suction pipe connected to the hydraulic pump 2, 27 is a discharge pipe connected to the hydraulic pump 2, and the discharge pipe 27 is exposed to the outside of the tank 1 from one side wall 1A of the tank 1, and has an unillustrated actuator. A connecting pipe is provided so that it can be connected. 28 is a pressure gauge branched and connected to the discharge pipe 27, 29 is a return pipe that returns the hydraulic oil discharged from the actuator to the inside of the tank 1, and has a connection portion that is exposed to the outside of the tank 1 on one side wall 1 A of the tank 1. A return pipe from the actuator is provided to be connectable.
[0012]
Next, the operation of this configuration will be described.
In the illustrated state, when the hydraulic pump 2 is driven by the electric motor 3, the hydraulic pump 2 sucks the hydraulic oil stored from the suction pipe 26 and discharges it to the discharge pipe 27. The hydraulic oil discharged to the discharge pipe 27 is supplied to the actuator. The hydraulic oil discharged from the actuator flows through the return pipe 29 and returns to the inside of the tank 1. The amount of hydraulic oil to be stored is confirmed by the oil level gauge 21, and the drain oil of the hydraulic pump 2 flows through the drain oil introduction pipe 2A, is introduced into the liquid cooler 16, and is cooled by the wind generated by the fan 16A. The cooled drain oil flows through the drain oil outlet pipe 2B and is led out into the tank 1. Further, the wind generated by the fan 16A of the liquid cooler 16 hits the outer surface of the side wall of the first tank portion 1B, and the storage inside the first tank portion 1B rises in oil temperature due to the operating heat accompanying the operation of the hydraulic pump 2 and the electric motor 3. Cool hydraulic fluid. When the drive of the hydraulic pump 2 by the electric motor 3 is stopped, the hydraulic pump 2 stops the suction and discharge of the hydraulic oil.
[0013]
When repairing or repairing the hydraulic pump 2 or the electric motor 3, the bolt 19A is loosened to remove the first upper lid 18A, the bolts 12A and 12B are loosened, the lifting plates 14A and 14B are removed, and the holding frame 4 is removed with a hoist or the like. At the same time, the hydraulic pump 2 and the electric motor 3 are lifted and taken out from the upper opening of the first tank portion 1B to the outside of the tank 1, and in this state, the lifting plates 14A and 14B are fixed to the bottom plate 8 of the holding frame 4 with bolts, When the lifting plates 14A and 14B, which are slightly lowered from the holding frame 4 and fixed to the bottom plate 8, are placed on the anti-vibration rubbers 11A and 11B of the mounting plates 10A and 10B and fixed with the bolts 12A and 12B, the hydraulic pump 2 and With the electric motor 3 taken out of the tank 1, the holding frame 4 can be fixed on the mounting plates 10A and 10B, and the hoist and the like are separated. Then, the electric motor 3 fixed to the stop plate 9 with bolts is removed together with the hydraulic pump 2 to perform repair or repair.
[0014]
When the repair and repair of the hydraulic pump 2 and the electric motor 3 are completed, the electric motor 3 is fixed to the stop plate 9 together with the hydraulic pump 2 with bolts, the bolts 12A and 12B are loosened, the hoist and the like together with the holding frame 4 and the hydraulic pump 2 and electric motor 3 Are lifted slightly to remove the lifting plates 14A and 14B from the mounting plates 10A and 10B. In this state, the lifting plates 14A and 14B are removed from the bottom plate 8 of the holding frame 4, and the hydraulic pump 2 and the electric motor 3 together with the holding frame 4 with a hoist or the like. Is lowered from the upper opening of the first tank portion 1B, and the upper plates 5A and 5B of the holding frame 4 are placed on the anti-vibration rubbers 11A and 11B of the placement plates 10A and 10B, and lifted on the upper plates 5A and 5B. 14A and 14B are overlapped and fixed with bolts 12A and 12B. Then, the first upper lid 18A is attached to the tank 1 with a bolt 19A to close the upper opening of the first tank portion 1B.
[0015]
With this operation, when the hydraulic pump 2 and the electric motor 3 are taken out of the tank 1, the attached device (liquid cooler 16) is arranged in the recess 15 of the tank 1, so that the hydraulic pump 2 and the electric motor 3 are arranged vertically. Since the upper lid (first upper lid 18A) that closes the upper opening of the tank 1 does not have to be provided with an accessory (liquid cooler 16), the hydraulic pump 2 and the electric motor 3 that drives the hydraulic pump 2 are arranged vertically and occupied. The upper cover (first upper cover 18A) that can be easily handled without disposing an attached device while reducing the area can be removed and the hydraulic pump 2 and the electric motor 3 can be taken out from the upper opening of the tank 1 to the outside of the tank 1 for easy handling. Can be improved.
[0016]
Further, since the side plate forming the one side wall 1A of the tank 1 is extended to form the one side wall 15A of the concave portion 15, the one side wall 15A of the concave portion 15 does not need to be specially formed and is easy to manufacture. Can be produced at a low price.
[0017]
Further, the inside of the tank 1 is constituted by a first tank portion 1B in which the hydraulic pump 2 and the electric motor 3 are arranged vertically, and a second tank portion 1C which is connected to this side and is adjacent to the concave portion 15, and the upper lid is the first lid. Since the first upper lid 18A that closes the upper opening of the tank portion 1B and the second upper lid 18B that closes the upper opening of the second tank portion 1C are configured as separate members, the hydraulic pump 2 and the electric motor 3 are placed outside the tank 1. When taking out, it is only necessary to remove the first upper lid 18A while leaving the second upper lid 18B as it is. The first upper lid 18A closes the upper opening of the first tank portion 1B, and the upper lid closes the entire upper opening of the tank 1. Compared to this, it can be made smaller and easier to handle.
[0018]
Further, the liquid cooler 16 that cools the drain oil of the hydraulic pump 2 by the wind generated by the fan 16A is provided on the outer surface of the side wall of the first tank portion 1B in which the hydraulic pump 2 and the electric motor 3 are disposed. Since it is arranged in the concave portion 15 so as to be applied, the liquid cooler 16 that cools the drain oil of the hydraulic pump 2 stores the first tank portion 1B in which the oil temperature rises due to the operating heat accompanying the operation of the hydraulic pump 2 and the electric motor 3. The hydraulic oil can also be cooled.
[0019]
Further, since the oil level gauge 21 for displaying the amount of hydraulic oil stored based on the displacement of the float 22 floating on the oil level L of the hydraulic oil stored in the second tank portion 1C is arranged on the second upper lid 18B, the first Temporary excessive displacement of the oil level L of the first tank portion 1B due to the suction and discharge of the hydraulic oil by the hydraulic pump 2 disposed in the tank portion 1B can hardly be transmitted to the float 22, and the amount of stored hydraulic oil is greatly mistaken. You can check without. Further, when removing the first upper lid 18A to take out the hydraulic pump 2 and the electric motor 3 to the outside of the tank 1, the oil level gauge 21 arranged on the second upper lid 18B can be affected.
[0020]
Further, since the upper opening of the concave portion 15 is closed by the second upper lid that closes the upper opening of the second tank portion 1C, the second upper lid 18B is not provided with a special lid that closes the upper opening of the concave portion 15. An arrangement space can be secured in a portion where the upper opening of 15 is closed, and the terminal box 24 can be arranged in this arrangement space for effective utilization.
[0021]
【The invention's effect】
Thus, according to the present invention, since the accessory device is disposed in the recess formed by recessing one corner of the tank, the accessory device does not have to be disposed on the upper lid that closes the upper opening of the tank. The electric motor that drives this is placed vertically to reduce the occupied floor area, and the upper lid that is easy to handle without the attached equipment is removed, and the hydraulic pump and electric motor are taken out of the tank through the upper opening of the tank. It is possible to improve handling.
[0022]
In addition, by adopting a structure in which the side plate that forms one side wall of the tank is extended to form one side wall of the recess, it is not necessary to form one side wall of the recess, making it easy to manufacture and inexpensive to manufacture. it can.
[0023]
Further, the inside of the tank is constituted by a first tank portion in which a hydraulic pump and an electric motor are vertically arranged and a second tank portion which is connected to the side and is adjacent to the concave portion, and the upper lid is an upper opening of the first tank portion. When the hydraulic pump and the electric motor are taken out of the tank by adopting a structure constituted by separate members by the first upper lid that closes the upper portion and the second upper lid that closes the upper opening of the second tank portion, the second upper lid is left as it is. Therefore, it is sufficient to remove only the first upper lid, and the first upper lid closes the upper opening of the first tank portion, and can be made smaller than the upper lid closing the entire upper opening of the tank, and can be handled more easily.
[0024]
In addition, the attached device arranged in the recess is a liquid cooler that introduces the drain liquid of the hydraulic pump and cools it with the wind generated by the fan, and the first tank portion in which the wind generated by the fan is arranged with the hydraulic pump and the electric motor A liquid cooler that cools the drain liquid of the hydraulic pump by adopting a structure that is disposed in the recess so as to contact the outer surface of the side wall of the first tank, and the temperature of the first tank rises due to the operating heat accompanying the operation of the hydraulic pump and the electric motor Some stored working liquids can also be cooled.
[0025]
In addition, by adopting a structure in which a liquid level gauge for displaying the amount of working liquid stored based on the displacement of the float floating on the liquid surface of the working liquid stored in the second tank unit is arranged on the second upper lid, the first tank unit Temporary excessive displacement of the liquid level of the first tank portion due to the suction and discharge of the working liquid by the hydraulic pump arranged in 1 can be hardly transmitted to the float, and the amount of stored working liquid can be confirmed without making a big mistake. Further, when removing the first upper lid in order to take out the hydraulic pump and the electric motor outside the tank, the liquid level meter arranged on the second upper lid can be affected.
[0026]
Further, by adopting a closed structure with a second upper lid for closing an upper opening of the second tank portion on the portion apertures of the recess, the second upper lid without providing exceptionally lid for closing the upper opening of the recess An arrangement space can be secured in a portion that closes the upper opening of the recess, and this arrangement space can be effectively used.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a hydraulic pressure source apparatus showing an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a cross-sectional view taken along line BB in FIG.
FIG. 4 is a side view as seen from the first arrow C. FIG.
5 is a plan view from an arrow D in FIG. 1. FIG.
6 is a hydraulic circuit diagram of the hydraulic pressure source device of FIG. 1. FIG.
[Explanation of symbols]
1 tank 1B 1st tank part 1C 2nd tank part 2 Hydraulic pump (hydraulic pump)
3 electric motor 15 recess 16 liquid cooler 16A fan 18A first upper lid 18B second upper lid 21 oil level gauge (liquid level gauge)
22 float L oil level (liquid level)

Claims

The working liquid that is sucked and discharged by the hydraulic pump is stored in a tank that is open at the top and formed in a box shape. The tank is cut off from one corner of the tank and cut off from the inside of the tank. A first tank portion that is vertically disposed by immersing a hydraulic pump and an electric motor that drives the inside of the tank in a working liquid, and is adjacent to the concave portion. The upper lid that closes the upper opening of the tank is composed of a first upper lid that closes the upper opening of the first tank portion and the second upper lid that closes the upper opening of the second tank portion. The liquid cooler that introduces the drain liquid of the hydraulic pump as an accessory device into the recess and cools it with the air generated by the fan is disposed on the outer surface of the side wall of the first tank unit. formed by position to apply Pressure source apparatus.

2. The hydraulic pressure source device according to claim 1, wherein a side plate forming one side wall of the tank is extended to form one side wall of the recess.

The liquid level gauge which displays the amount of working liquid stored based on the displacement of the float which floats on the liquid level of the working liquid stored in the 2nd tank part has been arranged in the 2nd upper cover. The fluid pressure source device described.

3. The hydraulic pressure source device according to claim 1, wherein the upper opening of the concave portion is closed by a second upper lid that closes the upper opening of the second tank portion . 4.