To provide a direct drive driving crane in which a motor is directly attached to a wire drum of the crane without a speed reducer, the direct drive driving crane being compact, easy to produce, energy saving and excellent in maintenance.SOLUTION: There is provided a direct drive driving crane configured such that: load is supported by a crab frame CF via a shaft bearing BB with shafts on both sides of a wire drum WD of the crane; a rotating shaft of a motor DM is directly attached to the shafts of the wire drum WD without a speed reducer; an outer frame integrated with a stator of the motor DM is configured such that a base MB of a motor frame is placed on a base CB of the crab frame CF in the direction in which a wire rope WR wound around the wire drum WD is delivered, and that with force by which the load suspended by the wire rope WR pulls the wire drum WD in the direction in which the wire rope WR is delivered, the base MB of the motor frame is pressed against the base CB of the crab frame CF; and a catching device SP is provided for preventing the base MB of the motor frame from lifting off the crab frame CF from the base CB when the load is light.SELECTED DRAWING: Figure 1
【課題】クレーンのワイヤドラムに、減速機を介さずにダイレクトにモータを取り付け、コンパクトで製作しやすく、省エネルギでメンテナンス性にも優れたダイレクトドライブ駆動クレーンを提供すること。【解決手段】クレーンのワイヤドラムWDの両側の軸を軸受BBを介してクラブフレームCFに荷重を支持し、ワイヤドラムWDの軸に、減速機を介さずにダイレクトにモータDMの回転軸が取り付けられ、モータDMの固定子と一体の外フレームは、ワイヤドラムWDに巻かれたワイヤロープWRが繰り出す方向に、モータフレームのベースMBがクラブフレームCFのベースCBに置かれ、ワイヤロープWRが吊り下げる荷重がワイヤドラムWDをワイヤロープWRが繰り出し方向に引っ張る力で、モータフレームのベースMBがクラブフレームCFのベースCBに押し付けられるようにし、荷重が軽い時に、モータフレームのベースMBのクラブフレームCFのベースCBからの浮き上がりを防止する引っ掛かり装置SPを設ける。【選択図】図1
DIRECT DRIVE DRIVING CRANE
ダイレクトドライブ駆動クレーン
19.01.2024
Patent
Elektronische Ressource
Japanisch
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