JPS6041520Y2 - Hot metal pot overlay removal tool - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a top removal tool for hot metal ladle used in converter factories of steel mills, etc.

More specifically, the present invention relates to a device for removing so-called overlays such as pig iron and slag that remain on the inner bottom surface of a hot metal ladle and that have been cooled and solidified.

Traditionally, the hot metal in the hot metal pot is transferred to a converter, etc., and placed in a designated location.
The process is repeated by waiting until the next charging of hot metal, injecting hot metal from another hot metal ladle for transfer, and charging the hot metal into a converter or the like.

In this case, the remaining hot metal and slag solidify due to air cooling during standby and stick to the bottom of the pot.

This is called overlaying, and as it gradually solidifies, the amount of charge in the pot decreases, severely impairing workability.

To remove this, it was common to hang something like a fishing tackle from a crane, hook the overlay, and peel it off.

However, the inside of the hot metal ladle is red hot, reaching 1300 degrees Celsius, and the hot air rises from inside the ladle.
Since this is a large pot with a size of 0 to 20σ, this work is forced to be carried out from a distance.

Moreover, as time passes, the top lining gets into the recesses of brick joints, etc., cools and solidifies, and becomes difficult to remove.When the top lining finally approaches atmospheric temperature, the lining bricks, etc. of the pot may be peeled off at the same time as the top lining is removed. make it unusable.

Therefore, this hooking and stripping work takes an extremely long time, and the success rate of hooking is low, making the work extremely difficult and inefficient.

The present invention has been made to eliminate such difficulties in conventional work.

An embodiment of this invention will be explained with reference to the drawings.

Reference numeral 1 in the figure is a ring-shaped suspension ring having an elongated hole with a major diameter of 40 cm in the center of a steel disc, for example, about 3 cm thick and 60 cm in diameter. It can be suspended from equipment.

A pair of handles 2, 2 made of round steel or the like and formed in a U-shape are fixed on the surface of the hanging ring 1 on the side of the oblong hole.

A pair of handles 2.2 may be provided on each of the front and back surfaces of the hanging ring 1, as shown in FIG.

A steel chain 3 having a required length is suspended from the hanging ring 1, and a brocade steel chain 4 is attached to the lower end of the chain 3.
hang.

The nail 4 has a plurality of claws 5 at its lower part.
The sharp tip is bent and points almost vertically upward.

It is preferable that a total of three claws 5 be provided every 120° of the circumference.

The upwardly pointed sharp tip 5a of the claw 5 has the function of hooking and peeling off the top layer of the inner bottom of the hot metal ladle.

In addition, a two-split annular stopper 6 is provided on the upper neck of the shell 4,
The stop has a structure in which the weight 7 does not hang down from the neck of the shell 4, and a two-split ring 8 having the weight 7 protruding to one side above the stop 6 is fitted, and the weight 7 makes it easy to hook. The tip 5a of the tip 5 is tilted so that it can be hooked onto the upper lining at the bottom of the hot metal pot.

The tip of the weight 7 is curved as shown in FIG.

The hot metal ladle overlay removal tool of the present invention has the above-mentioned configuration, and its usage will be explained below.

First, hold the hanging ring 1 of the overlay removal tool of the present invention by the handles 2, 2, and fit it into a hanging tool such as a hook or hook of a crane to hang the top removal tool.

In this state, gently lower the removal tool onto the inner bottom of the hot metal pot.

When the claw 5 of the core 4 at the lower end of the remover joins to the upper surface of the bottom of the hot metal pot, the weight 7 on the top of the core 4 causes the core 4 and the claw 5 to tilt, and the tip of the weight 7 tilts as shown in Figure 3. <Since it is shaped like a white birch, the crane hoisting tool, and therefore the hoisting ring 1. As the chain 3 is lowered, the claws 4 and claws 5 rotate, and the sharp tips of the claws 5
Insert a into the lining.

When the crane hoist is raised in this manner, the claws 5 catch the top liner and lift it up to peel it off from the bottom of the pot.

Once the top layer is peeled off, the hot metal pot is lifted by a crane and the peeled top layer is dropped and removed.

As is clear from the above, the hot metal ladle overlay removal tool of the present invention can easily remove the overlay of a red-hot hot metal ladle by simply lowering it onto the inner bottom surface of the hot metal ladle using a crane and pulling it up. .

Therefore, it becomes possible to remove the top lining in a short time, greatly improving work efficiency, and eliminating the problem of the brick lining of the pot peeling off as in the past.

Furthermore, when a birch-shaped weight is attached, the tip of the claw can be hooked to the overlay simply by lowering the invented removing tool directly below using a crane, making it possible to perform overlay removal work extremely quickly and easily. .

In this way, the present invention is extremely useful in field work.

[Brief explanation of drawings]

The drawings are for explaining an embodiment of the hot metal ladle overlay removal tool according to the present invention, in which FIG. 1 is an overall front view of the hot metal ladle top removal tool, FIG. 3 is a view taken along the line A-A in FIG. 1. 1... Hanging ring, 2... Handle, 3...
...Chain, 4...Hatsuka, 5...
Claw, 5a...tip, 6...stop, 7
...Weight, 8...Circle.

Claims (1)

[Scope of utility model registration request] A chain 3 in the form of an annular hanging ring 1 is suspended, and a nail 4 having a plurality of claws 5 is suspended from the lower end of the chain 3. The tips 5a of the claws are directed approximately vertically upward, and the neck of the nail 4 is suspended. This overlay removal tool for a hot metal ladle is characterized in that a two-split ring 8 having a weight 7 whose tip is shaped like a curved rod is attached to the top of the hot metal ladle.