PROBLEM TO BE SOLVED: To provide a hand-operated hoist with an electric auxiliary motor and an operation method of the hand-operated hoist with the electric auxiliary motor, which can perform a stable hand-operated hoisting operation of a load while an electric auxiliary motor torque is not affected by a pulling force of a hand-operated rope.SOLUTION: In a hand-operated hoist with an electric auxiliary motor, a rotational force of an electric auxiliary motor (25) supports a rotational force of a hand wheel (21) corresponding a constant ratio of a weight of a load L. When a magnetostrictive torque sensor (46) detects a hoist direction, a control part (62) calculates a weight M of the load L from the rotational force applied to an input shaft of the hand wheel (21), which is detected by the magnetostrictive torque sensor, and the rotational force of the electric auxiliary motor (25) calculated from a motor current. When the weight M is equal to or greater than a predetermined value, the control part (62) outputs a rotational force corresponding a predetermined ratio of the weight M from the electric auxiliary motor (25), and supports the rotation of the hand wheel (21).
【課題】電動補助モータトルクが手動索の手引き力に左右されることなく、安定した荷の手動巻き上げ操作が実施できる電動補助モータ付き手動巻上機、及び電動補助モータ付き手動巻上機の運転方法を提供すること。【解決手段】電動補助モータ付き手動巻上機において、荷Lの重量の一定割合に相当するハンドホイール(21)の回転力を電動補助モータ(25)で支援する。制御部(62)は、磁歪式トルクセンサ(46)が巻き上げ方向を検出した場合、磁歪式トルクセンサで検出されたハンドホイールの出力軸に加わる回転力と、モータ電流から算出された電動補助モータ(25)の回転力から、荷Lの重量Mを算出し、該重量Mが所定以上の場合、重量Mの所定の割合に相当する回転力を電動補助モータ(25)から出力しハンドホイール(21)の回転を支援する。【選択図】図2
HAND-OPERATED HOIST WITH ELECTRIC AUXILIARY MOTOR, AND OPERATION METHOD OF HAND-OPERATED HOIST
電動補助モータ付き手動巻上機、及び手動巻上機の運転方法
2015-07-02
Patent
Electronic Resource
Japanese
IPC: | B66D Haspeln , CAPSTANS |
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