Special hoisting tool with heat-preservation cover for hot metal charging in traveling crane

Abstract

A special hoisting tool with a heat-preservation cover for hot metal charging in a traveling crane belongs to the technical field of apparatus for hoisting. The hoisting tool comprises a portal type hoisting hook beam component, a heat-preservation cover, a heat-preservation cover lifting system, a heat-preservation cover folding or opening and a lock hanging system, a hinge device on a ladle and an electric control system; the heat-preservation cover is connected with the ladle by the hinge device; the heat-preservation cover lifting system is directly installed on the portal type hoisting hook beam component; the lock hanging system is connected with the hinge device; and the main equipment traveling crane is in charge of supplying power to the special electric control system and the main equipment traveling crane and the special electric control system mutually receive useful signals so as to complete the sequential control and keep necessary linking relationship of all actions of the hoisting tool. The special hoisting tool has the advantages that the special hoisting tool with simple mechanism, reliable action, stable running, good consistency and high automation is adopted to realize the cover adding operation of the ladle during the transfer process of the traveling crane, the cover is ensured to duly avoid the molten iron flow and slag flow during the holt metal charging process and to be duly and hermetically covered after completing the hot metal charging process, thus controlling the heat loss to the maximum extent.

Description

technical field [0001] The invention belongs to the technical field of hoisting appliances, and in particular provides a special hoisting appliance with a heat-insulating cover for a traveling vehicle with molten iron. Background technique [0002] At present, there are two modes of transfer transportation of molten iron from the blast furnace casting yard to the converter or electric furnace, ground and air. The ground transportation is realized by special locomotives, cars or transport trolleys carrying molten iron tanks or torpedo tanks lined with refractory materials. , the air transportation basically takes place in the iron ladle of the steelmaking plant, and the iron ladle is hoisted by the metallurgical crane. With the rapid promotion of molten iron pretreatment technology, the concept of one ladle to the end is being strengthened, which puts forward stricter requirements on the life of the ladle, while the traditional open iron ladle and ladle have large loss of ref...

AI Technical Summary

Problems solved by technology

For the molten iron ladle with barrel structure, the traditional management mode is not to add a cover. The traditional concept is that if the cover is added, the iron mixing operation cannot be normal, because the normal understanding of the overall cover is poured into the initial iron in the molten iron, and the water in the ladle will wash the inside of the cover. For refractory materials, the molten iron flow is also attached to the mouth of the bag due to the weight of the cover, making the liquid surface wide into a waterfall shape, which not only increases the radiation and convection area of ​​the molten iron flow, increases heat loss, but also makes it more difficult to position the crane. Large, and there is also the problem that the overall cover is not easy to fix when the ladle is turned over

But no matter how good the scheduling is, the heat loss caused by radiation and convection at the top of the lidless ladle accounts for about 50% of the total heat loss here.

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