PROBLEM TO BE SOLVED: To solve the problem that, in an inverter type crane device, since a connection is different from regular one in the case where a three-phase power source is a reverse phase, even when simple switching is performed in an operation direction similar to a positive phase, any unexpected problem such as damage of equipment may occur in accordance with the configuration of a control device and in the case where the power source is not grounded, there is the risk of electrical shock if a user touches a winch.SOLUTION: The inverter type crane device includes the three-phase power source, a device for winching including a motor for winching, a winch inverter device for controlling operation of the motor for winching, and a detection part for detecting whether any specific phase of the three-phase power source is grounded. The inverter type crane device also includes means for outputting information indicating that the specific phase is not grounded, to the outside in the case where it is detected by the detection part that the specific phase is not grounded. Thus, a grounded phase is monitored in the inverter type crane device and if the phase cannot be grounded, abnormality is reported, thereby preventing the electrical shock.

    【課題】インバータ式クレーン装置において、3相電源が逆相の場合は正規の接続と異なるため、正相と同様の動作方向に単純に切り替えても、制御装置の構成により機器の破損等の想定外の問題が発生する可能性がある。また、電源が接地されていない場合、巻上機に接触すると感電の恐れがある。【解決手段】3相電源と、巻上用電動機を備えた巻上用装置と、該巻上用電動機の動作を制御する巻上インバータ装置と、前記3相電源の特定の相が接地されているかを検出する検出部とを有し、前記検出部により接地されていないと検出した場合、該接地されていない情報を外部に出力する手段を備える。これにより、インバータ式クレーン装置において、接地相を監視し、接地できていない場合は異常を知らせることで、感電を防止することができる。【選択図】図3


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    Titel :

    INVERTER TYPE CRANE DEVICE


    Weitere Titelangaben:

    インバータ式クレーン装置


    Beteiligte:
    OIKAWA YUGO (Autor:in) / IIJIMA KATSUSHI (Autor:in)

    Erscheinungsdatum :

    2015-10-01


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B66D Haspeln , CAPSTANS / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen



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