The paper analyzed development status of hoisting winch of mine and pointed out that frequency-conversion winch is development direction of hoisting winch of mine. Taking application of frequency-conversion winch in one coal mine as example. it gave frequency-conversion control principle of the winch and introduced existed problems in application of the winch and corresponding solutio... https://smokeysmountainfurnitureoutlets.shop/product-category/cocktail-table-lift/