An electric motor (21) is arranged on a reduction device (12), and a wet braking device (30) which gives braking force to a motor shaft (25) is arranged on an upper end side of the electric motor (21). The wet braking device (30) comprises: a brake case (31) which accommodates an upper end portion of the motor shaft (25); an adapter (36) which is detachably disposed to the motor shaft (25) in the brake case (31); a plurality of rotating side brake disks (39) and a plurality of non-rotating side brake disks (40) arranged on an outer peripheral side of the adapter (36); and a brake piston (41) which gives braking force to the motor shaft (25) by frictionally engaging the rotating side brake disks (39) and the non-rotating side brake disks (40) with each other. As a result, at the time of performing a maintenance operation for the wet braking device (30), the wet braking device (30) alone can be solely removed while keeping the electric motor (21) assembled to the reduction device (12).


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    Title :

    SWING DEVICE FOR CONSTRUCTION MACHINERY


    Additional title:

    SCHWENKVORRICHTUNG FÜR EINE BAUMASCHINE
    DISPOSITIF DE PIVOTEMENT POUR ENGIN DE CONSTRUCTION


    Contributors:

    Publication date :

    2019-08-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    E02F Baggern , DREDGING / B66C Krane , CRANES / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen



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