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Electric hoist, crane with electric hoisting machine, and electric driving device
Electric hoist, crane with electric hoisting machine, and electric driving device
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机译：电动葫芦，带电动吊装机的起重机，电动驱动装置
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摘要
Problem to be solved: to provide a mechanical lower limit limiter mechanism capable of reliably stopping the electric hoist when the crane hook which suspends the suspension load falls to the restricted lower limit position.One side of the rope drum 35 in the axial directionA lower limit limiter 40 driven by a wire rope 2 is provided.Wire rope 2 is pulled out by a predetermined lengthWhen the wire rope 2 is brought to the one side in the axial direction of the rope drum 35,The lower limit limiter 40 is driven by the wire ropeThe power switch 77 of the electric motor 3 constituting the electric winding machine 31 is mechanically switched to the cut-off position.A lower limit limiter mechanism can be provided that can reliably stop the electric hoist without using an electronic control switch having fear of malfunction from the viewpoint of safety.As a result, it is possible to avoid the phenomenon that the end portion of the rope at the side opposite to the crane hook coupling portion of the wire rope disappears from the rope drum and the suspended load falls.Diagram
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