JP3715117B2 - Hydraulic motor unit with reduction gear - Google Patents

Hydraulic motor unit with reduction gear Download PDF

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Publication number
JP3715117B2
JP3715117B2 JP27451698A JP27451698A JP3715117B2 JP 3715117 B2 JP3715117 B2 JP 3715117B2 JP 27451698 A JP27451698 A JP 27451698A JP 27451698 A JP27451698 A JP 27451698A JP 3715117 B2 JP3715117 B2 JP 3715117B2
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Prior art keywords
hydraulic motor
reduction gear
hole
oil
motor device
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JP27451698A
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JPH11325223A (en
Inventor
哲 松本
学 赤川
利幸 竹内
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Shibaura Machine Co Ltd
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Toshiba Machine Co Ltd
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Priority to JP27451698A priority Critical patent/JP3715117B2/en
Priority to KR10-1999-0009357A priority patent/KR100483892B1/en
Publication of JPH11325223A publication Critical patent/JPH11325223A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0482—Gearings with gears having orbital motion
    • F16H57/0483—Axle or inter-axle differentials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H2057/0068—Repairing of transmissions by using repair kits

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hydraulic Motors (AREA)
  • General Details Of Gearings (AREA)
  • Motor Power Transmission Devices (AREA)
  • Retarders (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、油圧ショベルの旋回用等の減速機付き油圧モータ装置に係り、特に保守管理等の作業性を向上させた減速機付き油圧モータ装置の改良関するものである。
【０００２】
【従来の技術】
従来におけるこの種の減速機付き油圧モータ装置として、図６に示す構成からなるものが知られている。
【０００３】
すなわち、図６において、減速機付き油圧モータ装置５０は、油圧モータ部５２とその下部に配置された減速機部５４とから構成され、さらに減速機部５４は、モータのハウジング５５と一体的に構成されたカバー部５６により、その上面が覆われている。また、このカバー部５６には、オイルゲージ５８が取付けられている。このオイルゲージ５８は、減速機部５４ないし油圧モータ部５２の駆動軸線とほぼ並行に設置され、円筒状の筒部５８ａの内部に、ゲージ５９の一端５９ａを上部にしてその他端５９ｂを減速機部５４のカバー部５６内に挿通し、ゲージ５９を前記筒部５８ａに対し手動により着脱し得るよう取付け、支持させている。
【０００４】
なお、減速機部５４内の油面は、ゲージ５９を抜取り、前記先端部５９ｂの油の付着の程度により確認することができる。また、カバー部５６には、オイルゲージ５８とは別な場所に、給油口６０が設けられている。
【０００５】
【発明が解決しようとする課題】
しかしながら、前記従来技術において、減速機付き油圧モータ装置を油圧ショベルの旋回等を行うものとして使用した場合には、油圧ショベルを操作するためのバルブ、旋回モータ、シリンダ、センタジョイント等のレイアウト上、各機器、装置を非常に狭い空間に配置しなければならず、しかも各機器、装置間を接続する油圧配管等が複雑に交差するため、モータハウジングから比較的離れて設けられたオイルゲージ５８に、前記配管が干渉する問題や、給油口６０が油圧モータ部２５の上面から比較的下方に位置する減速機部５のカバー部５６の位置に設けられているので、この給油口６０の上方に前記配管が設けられるため、給油が困難となる等の難点があり、減速装置の保守並びに点検の作業上において大きな問題となる。
【０００６】
なお、近年において、油圧ショベルは、その操作上の安全性を確保するため、油圧ショベルの外形が小さくなっており、このため油圧機器、減速機等が搭載される部分の空間は非常に小さくなっており、しかもこの中で油圧機器間を接続する配管が複雑に交差するので、従来技術の油圧ショベルの減速機付き油圧モータ装置５０においては、減速機部５４の検油孔が油圧モータ部５２のハウジング５５から分離して設けられ、しかも給油口６０が油圧モータ部５２の上方から相当下方に位置するので、配管作業や給油が非常に困難となる問題を有している。
【０００７】
さらに、前記オイルゲージ５８の筒部５８ａに対するゲージ５９の支持方法によっては、前記筒部５８ａに減速機部５４内に空気抜き機能を持たせた場合、前記筒部５８ａの上端部から水が浸入する惧れがある等の難点もある。
【０００８】
そこで、本発明者等は、鋭意研究を重ねた結果、油圧モータ部の下部に減速機部を結合し、油圧モータ部に圧油を供給してこの油圧モータ部の駆動軸に係合した前記減速機部の減速機構を駆動するように構成した減速機付き油圧モータ装置において、油圧モータ部のロータリー部分を囲繞するとともに前記減速機部の上部を覆うハウジングに、前記油圧モータ部の駆動軸とほぼ平行にかつロータリー部分と近接した円筒孔からなる通孔を設け、この通孔の一端すなわち下端は、減速機部に対しその減速機構の上方の空間部に開口し、その他端すなわち上端は、前記油圧モータ部の上部を覆うカバーの上面に開口し、このカバー側の開口部にねじ部等からなる係合手段を形成し、前記通孔に前記減速機部の潤滑油のレベルを確認するためのオイルゲージを挿通配置し、これを前記係合手段を介して取付け固定することにより、減速機部の潤滑油に対する検油孔として、前記通孔を油圧モータ部のハウジングに設けたことにより、配管作業を容易化し、また前記通孔を油圧モータ部の上部を覆うカバーに開口するよう設けたことにより、高い位置での給油口として使用することができ、保守管理等の作業も容易となり、前記問題点を解消することができることを突き止めた。
【０００９】
従って、本発明の目的は、オイルゲージの筒部を油圧モータ部のハウジング自体に設けた通孔とする構成とし、しかも前記モータ部のロータリー部分に近接して配設すると共に、モータ部の上部を覆うカバーでオイルゲージを支持する構成とすることにより、モータ部に取付けた減速機部の潤滑油についての保守並びに点検作業を大幅に改善することができる減速機付き油圧モータ装置を提供することにある。
【００１０】
【課題を解決するための手段】
前記目的を達成するため、本発明に係る減速機付き油圧モータ装置は、油圧モータ部の下部に減速機部を結合し、油圧モータ部に圧油を供給してこの油圧モータ部の駆動軸に係合した前記減速機部の減速機構を駆動するように構成した減速機付き油圧モータ装置において、油圧モータ部のロータリー部分を囲繞するとともに前記減速機部の上部を覆うハウジングに通孔を設け、前記通孔の一端は減速機部に対しその減速機構の上方の空間部に開口すると共に、その他端は前記油圧モータ部の上部を覆うカバーの上面に開口し、前記通孔に前記カバー側の開口部を介して前記減速機部の潤滑油のレベルを確認するためのオイルゲージを挿通配置し、このオイルゲージを前記開口部に係合手段を介して取付けることを特徴とする。
【００１１】
この場合、前記ハウジングに複数の通孔を設け、前記通孔の１つに前記カバー側の開口部を介して前記減速機部の潤滑油のレベルを確認するためのオイルゲージを挿通配置し、このオイルゲージを前記開口部に係合手段を介して取付けると共に、前記他の通孔の前記カバー側の開口部にはめくら栓を係合手段を介して取付け閉塞した構成とすることができる。
【００１２】
また、一端を減速機部に対しその減速機構の上方の空間部に開口すると共に、他端を油圧モータ部の上部を覆うカバーの上面に開口してなるオイルゲージを挿通配置した通孔において、前記カバー側に開口する通孔の一部を、油圧モータのドレンポートに接続孔を介して連通し、さらにこの接続孔に前記通孔への油の流れを阻止する向きにチェック弁を設けた構成とすることもできる。
【００１３】
さらに、一端を減速機部に対しその減速機構の上方の空間部に開口すると共に、他端を油圧モータ部の上部を覆うカバーの上面に開口してなる全ての通孔において、前記カバー側の開口部に、オイルゲージを挿通することなく、めくら栓を係合手段を介して取付け閉塞した構成とすることもできる。
【００１４】
一方、前記ハウジングに設けた通孔は、前記油圧モータ部の駆動軸とほぼ平行にかつロータリー部分と近接して設けた円筒孔によって構成することができる。
【００１５】
また、前記複数の通孔のそれぞれカバー側の開口部に設ける係合手段は、同じサイズのねじ結合手段により構成することができる。
【００１６】
さらに、本発明に係る減速機付き油圧モータ装置は、油圧ショベルの旋回体上であってブーム基部の２つの取付け壁面の間に設置された旋回駆動装置として、最も有効に適用することができる。
【００１７】
【発明の実施の形態】
次に、本発明に係る減速機付き油圧モータ装置の実施例につき、添付図面を参照しながら、以下詳細に説明する。
【００１８】
図１および図２は、本発明に係る減速機付き油圧モータ装置の一実施例を示し、図１は全体構成とその要部概略断面図であり、図２は図１のＺ方向から見た概略側面図である。
【００１９】
しかるに、図１において、本実施例の減速機付き油圧モータ装置１０は、油圧モータ部１２と、この油圧モータ部１２の下部に配置された減速機部１４とから構成されている。油圧モータ部１２は、本実施例の場合、斜板式油圧モータとして構成され、減速機部１４の上部を覆うカバー１５と一体的に構成されたハウジング１６の内部に、シリンダ１７が回転自在に組込まれており、さらにこのシリンダ１７のピストン穴には、複数本のピストン１８が摺動自在に組込まれている。
【００２０】
また、駆動軸２０の先端には、本実施例の場合、減速機部１４を構成する２段遊星歯車減速機構の１段目の太陽歯車２２が噛合している。
【００２１】
さらに、油圧モータ部１２の反減速機部側には、油圧モータ部１２の上部を覆うカバー２４が取付けられている（図２参照）。このカバー２４に設けられた圧油の給排ポート２５を介して圧油が供給されると、この圧油はバルブプレート２６を介してシリンダ１７に供給され、シリンダ１７のピストン穴に流入する。
【００２２】
そして、前記圧油は、複数のピストン１８を斜板２８の斜面に沿ってピストン穴から押出され、この反作用としてシリンダ１７が回転し、この回転力が駆動軸２０、太陽歯車２２を駆動し、最終的には減速機部１４の出力ピニオン３０が駆動されるように構成される。
【００２３】
また、本実施例の場合においては、シリンダ１７の外周部とハウジング１６の内径部との間に、メカニカルブレーキ３２が組込まれている。
【００２４】
このメカニカルブレーキ３２の外周部には、シリンダ１７等の油圧モータ部１２のロータリー部分に近接して、駆動軸２０とほぼ平行に、ハウンジング１６自体に形成された円筒状の通孔すなわち円筒孔３４を設ける。
【００２５】
この円筒孔３４は、下端が減速機部１４の上方に位置する空間部３５に開口すると共に、上端は油圧モータ部１２の前記カバー２４に開口しており、さらに前記カバー２４の開口部には、図４に示すようにねじ部としたり、または、図示を省略したＯリングや弾力性筒部等を利用した圧入とするなど種々の係合手段３６を形成し、この係合手段３６にオイルゲージ３８を取付けて固定するように構成されている。
【００２６】
なお、前記空間部３５は、メカニカルブレーキ３２の近傍まで上方に伸びており、この旋回用減速機付き油圧モータ装置１０が、油圧ショベル等に使用され、そしてこの油圧ショベルが傾斜地に位置し、減速機部１４内の潤滑油の油面が、前記空間部３５の上方に位置する場合でも、潤滑油が円筒孔３４を塞ぐことがないように構成されている。
【００２７】
以上のように構成することにより、油圧モータ部１２の外周部には、従来に見られるような、油圧機器間の配管を行う場合の障害部分がなくなり、さらには円筒孔３４の上部に位置するカバー２４の前記円筒孔（ゲージ穴）３４の開口部（係合手段３６）が、旋回用減速機付き油圧モータ装置１０の最上部にあるので、前記円筒孔３４を給油口として使用することにより、従来に比較して配管や保守管理等を大幅に改善することができる。
【００２８】
図３および図４は、図１に示す減速機付き油圧モータ装置１０の変形例を示すものである。すなわち、本実施例においては、図１に示す円筒孔３４の上部がカバー２４に開口した部分において、油圧モータ部１２のカバー２４に設けたドレンポート４０の通路に接続する接続孔４２をカバー２４内に設け、しかも前記円筒孔３４からドレンポート４０側への流れのみを許容する向きにチェック弁４３を設けることによって、減速機部１４内の温度が上昇して、減速機部１４の上部空間の圧力が上昇した場合でも、これを油圧モータ部１２のドレンポート４０側へ排出することができるので、油圧モータ部１２のカバー２４における前記円筒孔（ゲージ穴）３４の開口部の形状は、減速機部１４の外部への空気抜き構造が不要となる。これにより、オイルゲージ３８の取付部の構造が簡単となると共に、シール部材４４によって確実にシールすることができるので、この減速機付き油圧モータ装置１０の使用中において、減速機部１４内に水が浸入する惧れ等を解消することができる（図４参照）。
【００２９】
図５は、図３に示す実施例の変形例を示すものである。すなわち、本実施例においては、図３における円筒孔３４に挿通配置したオイルゲージ３８を除去し、前記円筒孔（ゲージ穴）３４の開口部に形成した係合手段３６に、めくら栓４５を取付けて前記開口部を閉塞し、定期的に減速機部１４内の潤滑油を交換するように構成したものである。この場合、前記めくら栓４５を給油口として使用すると共に、減速機部１４の一部に設けた排油孔４６を使用して、潤滑油の交換を円滑に達成することができる。
【００３０】
さらに、本発明においては、前述した円筒孔３４を１つではなく、複数の位置に設けた構成とすることができる。すなわち、図示を省略しているが、図２における円筒孔３４を複数の位置に設けることができる。この場合、いずれか１つの円筒孔３４を選択してオイルゲージ３８を取付けることができる。そして、その他の円筒孔３４に対しては、油圧モータ部１２のカバー２４側の開口部に、前記と同様に係合手段３６を介してめくら栓４５を取付け、前記開口部を閉塞した構成とすることがでる。
【００３１】
このように、複数の円筒孔３４を設けることにより、オイルゲージ３８を取付けない前記カバー２４側の開口部は、減速機部１４への給油に際して、給油口とは別のエア抜き孔として機能し、給油作業を円滑に達成することができる。また、このように構成した油圧モータ装置１０を、油圧ショベルの旋回駆動装置として適用した場合、他の油圧装置、例えばバルブ、シリンダ等との位置関係によっては、配管との干渉を防止するために、オイルゲージ３８の取付け位置を、複数の円筒孔３４の中から適切な位置に設けた円筒孔３４を自由に選択して使用することができる。
【００３２】
また、複数の円筒孔３４を設けた場合、オイルゲージ３８およびめくら栓４５を取付けるために、油圧モータ部１２のカバー２４側の開口部に設ける係合手段３６は、例えば同じサイズのねじ結合手段により構成して共通化を図ることにより、前述した選択の自由度を拡大する機能をより有効に発揮させることができる。
【００３３】
前述した実施例から明らかなように、本発明に係る減速機付き油圧モータ装置によれば、減速機部の潤滑油に対する検油孔として、前記円筒孔を油圧モータ部のハウジングに設けたことにより、配管作業を容易化し、また前記円筒孔を油圧モータ部の上部を覆うカバーに開口するよう設けたことにより、高い位置での給油口として使用することができ、保守管理等の作業も容易となる利点が得られる。
【００３４】
そこで、例えば油圧ショベルの旋回体上においては、エンジン、ポンプ、バルブ、センタジョイント、ブームシリンダ等が非常に狭い空間に配置され、しかもこれらを接続する配管も多岐に亘っているので、これらの間に設置される旋回駆動装置の周りにも多数の配管が交差しているが前記構成からなる本発明の減速機付き油圧モータ装置を、前記油圧ショベルの旋回駆動装置として使用した場合には、前述した効果を全て有効に発揮させることができる。
【００３５】
以上、本発明の好適な実施例について説明したが、本発明は前記実施例に限定されることなく、本発明の精神を逸脱しない範囲内において多くの設計変更が可能である。
【００３６】
【発明の効果】
前述したように、本発明に係る減速機付き油圧モータ装置は、油圧モータ部の下部に減速機部を結合し、油圧モータ部に圧油を供給してこの油圧モータ部の駆動軸に係合した前記減速機部の減速機構を駆動するように構成した減速機付き油圧モータ装置において、油圧モータ部のロータリー部分を囲繞するとともに前記減速機部の上部を覆うハウジングに通孔を設け、前記通孔の一端は減速機部に対しその減速機構の上方の空間部に開口すると共に、その他端は前記油圧モータ部の上部を覆うカバーの上面に開口し、前記通孔に前記カバー側の開口部を介して前記減速機部の潤滑油のレベルを確認するためのオイルゲージを挿通配置し、このオイルゲージを前記開口部に係合手段を介して取付けた構成とすることにより、減速機部の潤滑油に対する検油孔として、前記円筒孔を油圧モータ部のハウジングに設けたことにより、配管作業を容易化し、また前記円筒孔を油圧モータ部の上部を覆うカバーに開口するよう設けたことにより、高い位置での給油口として使用することができ、保守管理等の作業も容易となる等、多くの優れた利点が得られる。
【図面の簡単な説明】
【図１】 本発明に係る減速機付き油圧モータ装置の一実施例を示す全体構成とその要部概略断面図である。
【図２】 図１に示す減速機付き油圧モータ装置のＺ方向から見た概略側面図である。
【図３】 図１に示す減速機付き油圧モータ装置の変形例を示す全体構成とその要部概略断面図である。
【図４】 図３に示す減速機付き油圧モータ装置におけるオイルゲージ取付部の要部拡大断面図である。
【図５】 図３に示す減速機付き油圧モータ装置の変形例を示す全体構成とその要部概略断面図である。
【図６】 従来の減速機付き油圧モータ装置の全体構成とその要部概略断面図である。
【符号の説明】
１０ 減速機付き油圧モータ装置
１２ 油圧モータ部
１４ 減速機部
１５ （減速機部の）カバー
１６ ハウジング
１７ シリンダ
１８ ピストン
２０ 駆動軸
２２ 太陽歯車
２４ （油圧モータ部の）カバー
２５ 給排ポート
２６ バルブプレート
２８ 斜板
３０ 出力ピニオン
３２ メカニカルブレーキ
３４ 円筒孔（通孔）
３５ 空間部
３６ 係合手段
３８ オイルゲージ
４０ ドレンポート
４２ 接続孔
４３ チェック弁
４４ シール部材
４５ めくら栓
４６ 排油孔[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hydraulic motor device with a reduction gear for turning a hydraulic excavator, and more particularly to an improvement of a hydraulic motor device with a reduction gear in which workability such as maintenance management is improved.
[0002]
[Prior art]
As a conventional hydraulic motor device with a reduction gear of this type, one having the configuration shown in FIG. 6 is known.
[0003]
That is, in FIG. 6, a hydraulic motor device 50 with a speed reducer is composed of a hydraulic motor portion 52 and a speed reducer portion 54 disposed below the hydraulic motor portion 52, and the speed reducer portion 54 is integrated with a motor housing 55. The upper surface of the cover portion 56 is covered. An oil gauge 58 is attached to the cover portion 56. The oil gauge 58 is installed substantially parallel to the drive axis of the speed reducer 54 or the hydraulic motor section 52, and has one end 59a of the gauge 59 at the top and the other end 59b at the speed reducer inside the cylindrical tube portion 58a. The gauge 59 is attached and supported so that it can be manually attached to and detached from the cylindrical portion 58a.
[0004]
In addition, the oil level in the reduction gear part 54 can be confirmed by removing the gauge 59 and checking the degree of oil adhesion on the tip part 59b. Further, the cover portion 56 is provided with an oil supply port 60 at a place different from the oil gauge 58.
[0005]
[Problems to be solved by the invention]
However, in the prior art, when the hydraulic motor device with a speed reducer is used as a swinging hydraulic excavator, the layout of valves, swing motors, cylinders, center joints, etc. for operating the hydraulic excavator, Each equipment and device must be placed in a very narrow space, and the hydraulic piping connecting each equipment and device intersects in a complicated manner. The problem that the pipes interfere with each other, and the oil supply port 60 is provided at the position of the cover portion 56 of the speed reducer unit 5 located relatively below the upper surface of the hydraulic motor unit 25. Since the piping is provided, there are difficulties such as difficulty in refueling, which is a major problem in maintenance and inspection work of the reduction gear.
[0006]
In recent years, hydraulic excavators have been reduced in outer shape in order to ensure operational safety, and therefore the space for mounting hydraulic equipment, reducers, etc. has become very small. In addition, since the pipes connecting the hydraulic devices intersect with each other in a complicated manner, in the hydraulic motor device 50 with a reduction gear of a conventional hydraulic excavator, the oil detection hole of the reduction gear portion 54 serves as the hydraulic motor portion 52. In addition, the oil supply port 60 is located substantially below from the upper side of the hydraulic motor portion 52, so that piping work and oil supply become very difficult.
[0007]
Further, depending on the method of supporting the gauge 59 with respect to the cylinder part 58a of the oil gauge 58, when the cylinder part 58a is provided with an air bleeding function in the speed reducer part 54, water enters from the upper end part of the cylinder part 58a. There are also difficulties, such as being worried.
[0008]
Accordingly, as a result of earnest research, the present inventors have coupled the speed reducer unit to the lower part of the hydraulic motor unit, supplied pressure oil to the hydraulic motor unit, and engaged the drive shaft of the hydraulic motor unit. In the hydraulic motor device with a speed reducer configured to drive the speed reduction mechanism of the speed reducer unit, a housing that surrounds a rotary portion of the hydraulic motor unit and covers an upper portion of the speed reducer unit, and a drive shaft of the hydraulic motor unit A through hole consisting of a cylindrical hole that is substantially parallel and close to the rotary part is provided, and one end or lower end of the through hole opens into the space above the speed reduction mechanism with respect to the speed reducer part , and the other end or upper end is An opening is formed on the upper surface of the cover that covers the upper portion of the hydraulic motor portion, and an engagement means including a screw portion is formed in the opening portion on the cover side, and the level of the lubricating oil in the speed reducer portion is confirmed in the through hole. Oy for A gauge placed through, by this attaching fixed via the engagement means, as a dipstick hole for the lubricating oil of the reduction gear unit, by providing the hole in the housing of the hydraulic motor, plumbing In addition, by providing the through hole in the cover that covers the upper part of the hydraulic motor unit, it can be used as a fuel filler port at a high position, facilitating maintenance and other work, and the problem described above. I found out that the point can be solved.
[0009]
Accordingly, an object of the present invention is to form the cylinder portion of the oil gauge as a through hole provided in the housing of the hydraulic motor portion , and to be disposed in the vicinity of the rotary portion of the motor portion, and at the top of the motor portion. Provided is a hydraulic motor device with a reduction gear that can greatly improve maintenance and inspection work for lubricating oil in the reduction gear portion attached to the motor portion by supporting the oil gauge with a cover that covers It is in.
[0010]
[Means for Solving the Problems]
In order to achieve the above-described object, a hydraulic motor device with a reduction gear according to the present invention has a reduction gear unit coupled to a lower portion of a hydraulic motor unit, supplies pressure oil to the hydraulic motor unit, and serves as a drive shaft of the hydraulic motor unit. In the hydraulic motor device with a reduction gear configured to drive the reduction mechanism of the engaged reduction gear portion , a through hole is provided in a housing that surrounds a rotary portion of the hydraulic motor portion and covers an upper portion of the reduction gear portion, One end of the through hole opens to a space above the speed reduction mechanism with respect to the speed reducer portion , and the other end opens to an upper surface of a cover that covers an upper portion of the hydraulic motor portion. An oil gauge for confirming the level of lubricating oil in the speed reducer is inserted through the opening, and the oil gauge is attached to the opening via an engaging means.
[0011]
In this case, a plurality of through holes are provided in the housing, and an oil gauge for checking the level of the lubricating oil of the reduction gear unit is inserted into one of the through holes through the opening on the cover side, The oil gauge can be attached to the opening via an engaging means, and a blind plug can be attached and closed to the opening on the cover side of the other through hole via an engaging means.
[0012]
In addition, in the through-hole in which one end is opened to the space above the speed reduction mechanism with respect to the speed reducer portion , and an oil gauge formed by opening the other end to the upper surface of the cover that covers the upper portion of the hydraulic motor portion is inserted, A part of the through hole that opens to the cover side is communicated with the drain port of the hydraulic motor through a connection hole, and a check valve is provided in the connection hole in a direction that prevents the flow of oil to the through hole. It can also be configured.
[0013]
Further, one end is opened to the space above the speed reduction mechanism with respect to the speed reducer portion , and the other end is opened to the upper surface of the cover that covers the upper portion of the hydraulic motor portion. It is also possible to adopt a configuration in which the blind plug is attached and closed through the engaging means without inserting an oil gauge into the opening.
[0014]
On the other hand , the through hole provided in the housing can be constituted by a cylindrical hole provided substantially in parallel with the drive shaft of the hydraulic motor portion and close to the rotary portion.
[0015]
Further, the engaging means provided in the cover side opening of each of the plurality of through holes can be constituted by screw coupling means of the same size.
[0016]
Furthermore, the hydraulic motor device with a reduction gear according to the present invention can be most effectively applied as a turning drive device that is installed between two attachment wall surfaces of the boom base portion on the swing body of the hydraulic excavator.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of a hydraulic motor device with a reduction gear according to the present invention will be described in detail below with reference to the accompanying drawings.
[0018]
1 and 2 show an embodiment of a hydraulic motor device with a reduction gear according to the present invention, FIG. 1 is an overall configuration and a schematic cross-sectional view of a main part thereof, and FIG. 2 is viewed from the Z direction of FIG. It is a schematic side view.
[0019]
However, in FIG. 1, the hydraulic motor device 10 with a reduction gear according to the present embodiment includes a hydraulic motor portion 12 and a reduction gear portion 14 disposed below the hydraulic motor portion 12 . In this embodiment, the hydraulic motor unit 12 is configured as a swash plate type hydraulic motor, and a cylinder 17 is rotatably incorporated in a housing 16 integrally formed with a cover 15 that covers an upper portion of the speed reducer unit 14. Further, a plurality of pistons 18 are slidably incorporated in the piston holes of the cylinder 17.
[0020]
In addition, in the case of the present embodiment, the first stage sun gear 22 of the two-stage planetary gear reduction mechanism that constitutes the reduction gear unit 14 is engaged with the tip of the drive shaft 20.
[0021]
Furthermore, the cover 24 which covers the upper part of the hydraulic motor part 12 is attached to the anti-reduction gear part side of the hydraulic motor part 12 (refer FIG. 2). When pressure oil is supplied via the pressure oil supply / discharge port 25 provided in the cover 24, the pressure oil is supplied to the cylinder 17 via the valve plate 26 and flows into the piston hole of the cylinder 17.
[0022]
Then, the pressure oil is pushed out from the piston hole along the slope of the swash plate 28, the cylinder 17 rotates as a reaction, the rotational force drives the drive shaft 20, the sun gear 22, Ultimately, the output pinion 30 of the speed reducer unit 14 is configured to be driven.
[0023]
In the present embodiment, a mechanical brake 32 is incorporated between the outer peripheral portion of the cylinder 17 and the inner diameter portion of the housing 16.
[0024]
A cylindrical through hole formed in the housing 16 itself, that is, a cylindrical hole 34 is formed in the outer peripheral portion of the mechanical brake 32 in the vicinity of the rotary portion of the hydraulic motor unit 12 such as the cylinder 17 and substantially parallel to the drive shaft 20. Is provided.
[0025]
The cylindrical hole 34 is configured to open into the space 35 which the lower end is positioned above the reduction gear unit 14, the upper end is open to the cover 24 of the hydraulic motor 12, further opening of the cover 24 As shown in FIG. 4, various engaging means 36 are formed, such as a threaded portion, or a press-fit using an O-ring or a resilient cylindrical portion (not shown). The gauge 38 is configured to be attached and fixed.
[0026]
The space 35 extends upward to the vicinity of the mechanical brake 32, and the hydraulic motor device 10 with a turning speed reducer is used for a hydraulic excavator or the like. Even when the oil level of the lubricating oil in the machine part 14 is located above the space part 35, the lubricating oil is configured not to block the cylindrical hole 34.
[0027]
By configuring as described above, the outer peripheral portion of the hydraulic motor unit 12 is free from a hindrance when piping between hydraulic devices as seen in the related art, and is further positioned above the cylindrical hole 34. Since the opening (engagement means 36) of the cylindrical hole (gauge hole) 34 of the cover 24 is at the uppermost part of the hydraulic motor device 10 with a reduction gear for turning, the cylindrical hole 34 is used as an oil supply port. Compared to the conventional case, piping and maintenance management can be greatly improved.
[0028]
3 and 4 show a modification of the hydraulic motor device 10 with a reduction gear shown in FIG. That is, in this embodiment, the connection hole 42 connected to the passage of the drain port 40 provided in the cover 24 of the hydraulic motor unit 12 is formed in the cover 24 at the portion where the upper portion of the cylindrical hole 34 shown in FIG. By providing the check valve 43 in a direction that allows only the flow from the cylindrical hole 34 to the drain port 40 side, the temperature in the reduction gear unit 14 rises, and the upper space of the reduction gear unit 14 Can be discharged to the drain port 40 side of the hydraulic motor unit 12, the shape of the opening of the cylindrical hole (gauge hole) 34 in the cover 24 of the hydraulic motor unit 12 is An air vent structure to the outside of the reduction gear unit 14 is not required. As a result, the structure of the mounting portion of the oil gauge 38 is simplified and can be reliably sealed by the seal member 44. Therefore, when the hydraulic motor device with a speed reducer 10 is used, Can be eliminated (see FIG. 4).
[0029]
FIG. 5 shows a modification of the embodiment shown in FIG. That is, in this embodiment, the oil gauge 38 inserted and disposed in the cylindrical hole 34 in FIG. 3 is removed, and a blind plug 45 is attached to the engaging means 36 formed in the opening of the cylindrical hole (gauge hole) 34. The opening is closed, and the lubricating oil in the speed reducer section 14 is periodically replaced. In this case, the replacement of the lubricating oil can be smoothly achieved by using the blind plug 45 as an oil filler port and using the oil drain hole 46 provided in a part of the speed reducer portion 14.
[0030]
Furthermore, in this invention, it can be set as the structure which provided the cylindrical hole 34 mentioned above in several positions instead of one. That is, although not shown, the cylindrical holes 34 in FIG. 2 can be provided at a plurality of positions. In this case, any one cylindrical hole 34 can be selected and the oil gauge 38 can be attached. For the other cylindrical holes 34, a blind plug 45 is attached to the opening on the cover 24 side of the hydraulic motor portion 12 via the engaging means 36 in the same manner as described above, and the opening is closed. You can do it.
[0031]
As described above, by providing the plurality of cylindrical holes 34, the opening on the cover 24 side where the oil gauge 38 is not attached functions as an air vent hole different from the oil supply port when supplying oil to the reduction gear unit 14. The refueling operation can be achieved smoothly. In addition, when the hydraulic motor device 10 configured as described above is applied as a swing drive device of a hydraulic excavator, depending on the positional relationship with other hydraulic devices such as valves and cylinders, in order to prevent interference with the piping The cylindrical hole 34 provided at an appropriate position from among the plurality of cylindrical holes 34 can be freely selected and used as the mounting position of the oil gauge 38.
[0032]
Further, when a plurality of cylindrical holes 34 are provided, the engagement means 36 provided at the opening on the cover 24 side of the hydraulic motor unit 12 in order to attach the oil gauge 38 and the blind plug 45 is, for example, a screw coupling means of the same size. Thus, the above-described function for expanding the degree of freedom of selection can be more effectively exhibited.
[0033]
As is clear from the above-described embodiment, according to the hydraulic motor device with a reduction gear according to the present invention, the cylindrical hole is provided in the housing of the hydraulic motor portion as an oil detection hole for the lubricating oil of the reduction gear portion. The piping work is facilitated, and the cylindrical hole is provided so as to open in the cover that covers the upper part of the hydraulic motor unit, so that it can be used as a fuel filler port at a high position, and maintenance work and the like are also easy. The advantage is obtained.
[0034]
Thus, for example, on a swing body of a hydraulic excavator, an engine, a pump, valve, center joints, boom cylinder or the like are arranged in very narrow spaces, and since the pipe it is also diversified connecting these, between them When a hydraulic motor device with a reduction gear according to the present invention having the above-described configuration is used as a swing drive device for the hydraulic excavator, a large number of pipes also intersect around the swing drive device installed in All the effects that have been achieved can be exhibited effectively.
[0035]
The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and many design changes can be made without departing from the spirit of the present invention.
[0036]
【The invention's effect】
As described above, in the hydraulic motor device with a reduction gear according to the present invention, the reduction gear portion is coupled to the lower portion of the hydraulic motor portion, and the hydraulic oil is supplied to the hydraulic motor portion and engaged with the drive shaft of the hydraulic motor portion. In the hydraulic motor device with a reduction gear configured to drive the reduction mechanism of the reduction gear portion, a through hole is provided in a housing that surrounds a rotary portion of the hydraulic motor portion and covers an upper portion of the reduction gear portion. One end of the hole opens in the space above the speed reduction mechanism with respect to the speed reducer portion , and the other end opens in the upper surface of the cover that covers the upper portion of the hydraulic motor portion, and the opening on the cover side passes through the through hole. By inserting an oil gauge for confirming the level of lubricating oil in the speed reducer part through this and attaching the oil gauge to the opening via an engagement means, For lubricating oil As dipstick hole that, by providing the cylindrical bore in the housing of the hydraulic motor, to facilitate the piping work, and by providing to open the cylindrical hole in the cover for covering the upper portion of the hydraulic motor, high It can be used as a refueling port at a position, and many excellent advantages can be obtained, such as facilitating operations such as maintenance management.
[Brief description of the drawings]
FIG. 1 is an overall configuration showing an embodiment of a hydraulic motor device with a reduction gear according to the present invention, and a schematic cross-sectional view of a main part thereof.
FIG. 2 is a schematic side view of the hydraulic motor device with a reduction gear shown in FIG. 1 as viewed from the Z direction.
3 is an overall configuration showing a modification of the hydraulic motor device with a reduction gear shown in FIG.
4 is an enlarged cross-sectional view of a main part of an oil gauge mounting portion in the hydraulic motor device with a reduction gear shown in FIG. 3;
5 is an overall configuration showing a modification of the hydraulic motor device with a reduction gear shown in FIG.
FIG. 6 is an overall configuration of a conventional hydraulic motor device with a reduction gear and a schematic cross-sectional view of the main part thereof.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Hydraulic motor apparatus with reduction gear 12 Hydraulic motor part 14 Reduction gear part 15 Cover 16 (of reduction gear part) Housing 17 Cylinder 18 Piston 20 Drive shaft 22 Sun gear 24 Cover (of hydraulic motor part) 25 Supply / exhaust port 26 Valve plate 28 Swash plate 30 Output pinion 32 Mechanical brake 34 Cylindrical hole (through hole)
35 Space 36 Engagement means 38 Oil gauge 40 Drain port 42 Connection hole 43 Check valve 44 Seal member 45 Blown plug 46 Oil drain hole

Claims (7)

油圧モータ部の下部に減速機部を結合し、油圧モータ部に圧油を供給してこの油圧モータ部の駆動軸に係合した前記減速機部の減速機構を駆動するように構成した減速機付き油圧モータ装置において、油圧モータ部のロータリー部分を囲繞するとともに前記減速機部の上部を覆うハウジングに通孔を設け、前記通孔の一端は減速機部に対しその減速機構の上方の空間部に開口すると共に、その他端は前記油圧モータ部の上部を覆うカバーの上面に開口し、前記通孔に前記カバー側の開口部を介して前記減速機部の潤滑油のレベルを確認するためのオイルゲージを挿通配置し、このオイルゲージを前記開口部に係合手段を介して取付けることを特徴とする減速機付き油圧モータ装置。A reduction gear connected to a lower portion of the hydraulic motor portion, configured to supply pressure oil to the hydraulic motor portion and drive a reduction mechanism of the reduction gear portion engaged with a drive shaft of the hydraulic motor portion. In the attached hydraulic motor device, a through hole is provided in a housing that surrounds a rotary portion of the hydraulic motor unit and covers an upper portion of the reduction gear unit, and one end of the through hole is a space portion above the reduction mechanism with respect to the reduction gear unit And the other end is opened on the upper surface of the cover that covers the upper portion of the hydraulic motor unit, and the level of lubricating oil in the speed reducer unit is confirmed through the opening on the cover side in the through hole. A hydraulic motor device with a reduction gear, wherein an oil gauge is inserted and disposed, and the oil gauge is attached to the opening through an engaging means. 前記ハウジングに複数の通孔を設け、前記通孔の１つに前記カバー側の開口部を介して前記減速機部の潤滑油のレベルを確認するためのオイルゲージを挿通配置し、このオイルゲージを前記開口部に係合手段を介して取付けると共に、前記他の通孔の前記カバー側の開口部にはめくら栓を係合手段を介して取付け閉塞してなる請求項１記載の減速機付き油圧モータ装置。 A plurality of through holes are provided in the housing, and an oil gauge for confirming the lubricating oil level of the reduction gear unit is inserted and disposed in one of the through holes through the opening on the cover side. 2. With a reduction gear according to claim 1, wherein a blind plug is attached and closed to the opening on the cover side of the other through hole via an engaging means. Hydraulic motor device. 一端を減速機部に対しその減速機構の上方の空間部に開口すると共に、他端を油圧モータ部の上部を覆うカバーの上面に開口してなるオイルゲージを挿通配置した通孔において、前記カバー側に開口する通孔の一部を、油圧モータのドレンポートに接続孔を介して連通し、さらにこの接続孔に前記通孔への油の流れを阻止する向きにチェック弁を設けてなる請求項１または２記載の減速機付き油圧モータ装置。In the through hole in which one end is opened to the space above the speed reduction mechanism with respect to the speed reducer and the other end is opened on the upper surface of the cover that covers the upper part of the hydraulic motor, A part of the through hole that opens to the side is communicated with the drain port of the hydraulic motor through a connection hole, and a check valve is provided in the connection hole in a direction to prevent the flow of oil to the through hole. Item 3. The hydraulic motor device with a reduction gear according to Item 1 or 2. 一端を減速機部に対しその減速機構の上方の空間部に開口すると共に、他端を油圧モータ部の上部を覆うカバーの上面に開口してなる全ての通孔において、前記カバー側の開口部に、オイルゲージを挿通することなく、めくら栓を係合手段を介して取付け閉塞してなる請求項１または２記載の減速機付き油圧モータ装置。One end is opened to the space above the speed reduction mechanism with respect to the speed reducer portion , and the other end is opened to the upper surface of the cover that covers the upper portion of the hydraulic motor portion. The hydraulic motor device with a reduction gear according to claim 1 or 2, wherein the blind plug is attached and closed via the engaging means without inserting an oil gauge. 前記ハウジングに設けた通孔は、前記油圧モータ部の駆動軸とほぼ平行にかつロータリー部分と近接して設けた円筒孔からなる請求項１ないし４のいずれかに記載の減速機付き油圧モータ装置。 The hydraulic motor device with a reduction gear according to any one of claims 1 to 4 , wherein the through hole provided in the housing comprises a cylindrical hole provided substantially parallel to the drive shaft of the hydraulic motor unit and in proximity to the rotary part. . 複数の通孔のそれぞれカバー側の開口部に設ける係合手段は、同じサイズのねじ結合手段により構成してなる請求項２または４記載の減速機付き油圧モータ装置。  The hydraulic motor device with a reduction gear according to claim 2 or 4, wherein the engaging means provided in the openings on the cover side of each of the plurality of through holes are configured by screw coupling means of the same size. 減速機付き油圧モータ装置は、油圧ショベルの旋回体上であってブーム基部の２つの取付け壁面の間に設置された旋回駆動装置である請求項１ないし６のいずれかに記載の減速機付き油圧モータ装置。  The hydraulic motor device with a speed reducer according to any one of claims 1 to 6, wherein the hydraulic motor device with a speed reducer is a swing drive device installed between two mounting wall surfaces of the boom base on the swing body of the hydraulic excavator. Motor device.
JP27451698A 1998-03-20 1998-09-29 Hydraulic motor unit with reduction gear Expired - Lifetime JP3715117B2 (en)

Priority Applications (2)

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JP27451698A JP3715117B2 (en) 1998-03-20 1998-09-29 Hydraulic motor unit with reduction gear
KR10-1999-0009357A KR100483892B1 (en) 1998-03-20 1999-03-19 Hydraulic motor with reduction gears

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JP7276298 1998-03-20
JP10-72762 1998-03-20
JP27451698A JP3715117B2 (en) 1998-03-20 1998-09-29 Hydraulic motor unit with reduction gear

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JP3715117B2 true JP3715117B2 (en) 2005-11-09

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CN102434381A (en) * 2010-09-13 2012-05-02 日立建机株式会社 Hydraulic motor

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JP2007232220A (en) * 2007-04-25 2007-09-13 Nabtesco Corp Eccentric rocking reduction gear
JP5386627B1 (en) * 2012-11-16 2014-01-15 株式会社小松製作所 Oil inspection device for work vehicle swing machinery
JP7098225B2 (en) * 2017-09-28 2022-07-11 ダイハツ工業株式会社 Oil level gauge retaining structure
CN110107675B (en) * 2019-05-31 2022-03-08 岳晓磊 Oiling maintenance device of coal mining machine gear box

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JPH0687672U (en) * 1993-05-31 1994-12-22 帝人製機株式会社 Brake manual release mechanism in hydraulic motor
JP3275129B2 (en) * 1996-03-25 2002-04-15 日立建機株式会社 Hydraulic motor device with reduction gear

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102434381A (en) * 2010-09-13 2012-05-02 日立建机株式会社 Hydraulic motor
CN102434381B (en) * 2010-09-13 2016-01-20 日立建机株式会社 Oil hydraulic motor

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