Hoisting speed adjusting device of hoist and the like

摘要

(57) Abstract Objective It relates to the hoisting speed adjusting device of the hoist, and the like is lightWhile the light operativity in the time of the load is guaranteed, securityIt improves. Constitution Inverter control of rpm of motor for winding engineWith, it is light, with 2 step manipulations of the operating button in the time of the load constant speedFrom hoist rpm change to time fast hoist rpm columnTo be u ones, in inverter control unit the constant speed hoist timeIn the operating button and the signal transmission circuit which command the quantity of revolution in inclusion state distributionIt is done and it is light load which the closed circuit does the signal transmission circuit lightly at the time of the load detection meansWith, at the time of 2 step manipulation of the operating button and lightly the signal by load detection meansWhen outputting being able to operate, change to time fast hoist rpmIt possesses with the delay means which are made to delay.