To provide a turning drive device capable of reducing burden of a working person when a turning body naturally turns under the influence such as wind in a configuration where the turning body is caused to turn under a neutral free specification, and a working machine comprising the same.SOLUTION: A turning drive device 3 comprises a turning motor 33 for turning a turning body 10, a hydraulic pump 31, an operation lever 42A, a control valve 32, a brake cylinder 36, and a control unit 50. The control unit 50 includes an automatic brake implementation unit 503 and a determination unit 504. The automatic brake implementation unit 503 switches the brake cylinder 36 to a brake state and applies a mechanical brake force to the turning motor 33 when the determination unit 504 of the control unit 50 determines that wind force causes the turning body 10 to turn naturally and a counter operation for the natural turn is input to the operation lever 42A.SELECTED DRAWING: Figure 2

    【課題】中立フリー仕様のもとで旋回体を旋回させる構成において風などの影響で旋回体が自然旋回する際の作業者の負担を低減することが可能な旋回駆動装置、およびこれを備えた作業機械を提供する。【解決手段】旋回駆動装置3は、旋回体10を旋回させる旋回モータ33と、油圧ポンプ31と、操作レバー42Aと、コントロールバルブ32と、ブレーキシリンダ36と、制御部50と、を備える。制御部50は、自動ブレーキ実行部503と判定部504とを含む。自動ブレーキ実行部503は、制御部50の判定部504によって風力が旋回体10を自然旋回させると判定され、かつ、自然旋回に対するカウンタ操作が操作レバー42Aに入力されていると判定された場合に、ブレーキシリンダ36をブレーキ状態に切換え、旋回モータ33に機械的なブレーキ力を付与する。【選択図】図2


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    Title :

    TURNING DRIVE DEVICE AND WORKING MACHINE COMPRISING THE SAME


    Additional title:

    旋回駆動装置およびこれを備えた作業機械


    Contributors:

    Publication date :

    2020-01-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES / E02F Baggern , DREDGING



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