JPS5953325B2 - Vacuum chamber repair equipment for molten steel degassing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device used for vacuum tank repair work (brick repair, nozzle repair, nozzle preheating work, etc.) in molten steel degassing equipment, and provides safety, labor-saving, and speedy repair work. It is possible to achieve this goal.

Currently, in molten steel degassing equipment, the nozzle part of a vacuum chamber is directly inserted into molten steel to degas the molten steel.

Repair work for the vacuum chamber was carried out as follows.

That is, the approximately 100-ton vacuum chamber was separated from its attached equipment, lifted up by a crane, and transferred to a trolley, the trolley was moved to the repair work site, and the vacuum chamber was firmly fixed to its pedestal by the crane. In addition to moving the trolley to the required location and storing it, the jigs necessary for the repair work (for example, a packet for collecting brick waste, a preheating hood, a workbench, etc.) are moved to the bottom of the fixed vacuum tank using a crane, and then a forklift is used. Repair work was carried out by appropriately positioning the jig using a .

In such repair work, work such as positioning and handling of the repair jig, which is performed under the fixed vacuum chamber, is complicated and requires a lot of manpower, making it difficult to save manpower and labor. This was not desirable from a safety point of view as it required the vehicles to be driven around the factory.

The present invention relates to a device for repairing a vacuum chamber in a molten steel degassing facility, which was made in view of the above-mentioned circumstances. A work trolley for transporting a repair jig is movably placed thereon, and the transport trolley is equipped with an elevating device for positioning the height of the repair jig. be.

Embodiments of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes a transportation trolley, on which a working trolley 2 is movably placed, and these trolleys 1.2 are adapted to be operated (for example, remotely) as appropriate. .

Further, 3 is a vacuum chamber, and 4 is a fixed pedestal mounted on the upper surface of the transportation trolley 1. A cylinder 5 is disposed above the fixed pedestal 4, and the vacuum is supplied through the cylinder 5. Tank 3 is held there.

Further, the reference numeral 6 indicates a screw shaft which is set up on the transportation cart 1, and this screw shaft 6 is driven by an electric motor 7. The reference numeral 8 is connected to the screw shaft 6, and the screw shaft 6 is driven by an electric motor 7. This is a forklift that is driven to move up and down along a guide rod 9.

Furthermore, 10 is a packet for collecting brick scraps, 11 is a workbench, and these are repair jigs, and these repair jigs can be moved up and down by the forklift 8 to determine their height. It is.

For example, a fork insertion opening is attached to the bottom of the repair jig, or protruding engagement brackets that engage with the fork (two pieces) are attached to both sides of the forklift.
It is designed to move up and down.

When carrying out repair work, first, the vacuum chamber 3 is separated from its attached equipment, the vacuum chamber 3 is suspended and moved using a crane, etc., and the vacuum chamber 3 is held on the fixed frame 4 of the transportation trolley 1 via the cylinder 5, and in this state. The transport trolley 1 is moved to a required location in a repair work site by its drive device (not shown).

Next, the working trolley 2 is moved to the outside of the fixed pedestal 4 (as shown in the imaginary line in the drawing).
A desired repair jig such as (not shown) is mounted on a crane or the like, and in this state, the work trolley 2 is moved to the lower side of the vacuum chamber 3, and at the same time, the repair jig is engaged with the forklift 8. That is, it is inserted into the fork insertion opening or engaged with the protruding engagement brackets on both sides.

In this state (the state shown in the figure), the screw shaft 6 is driven by the electric motor 7 to appropriately raise the forklift 8, and the height of the repair jig is determined to perform the repair work.

Also, repair work is performed using a preheating burner etc. provided on the fixed frame 4.

Furthermore, if necessary, the cylinder 5 is operated to move the vacuum chamber 3 up and down to adjust its position and perform repair work.

After the repair work is completed, the repair jig is lifted from the work trolley 2 by a crane or the like and transported to the required location.

In this manner, the work cart 2 is left empty, the transport cart 1 is moved, the vacuum tank 3 is transported into the molten steel degassing equipment, the vacuum tank 3 is set, and the molten steel degassing operation is performed.

It should be noted that the present invention is not limited to the above-mentioned embodiments; for example, it is optional to use a cylinder instead of a forklift, and it goes without saying that various changes can be made without departing from the gist of the invention. It is.

As described above, according to the vacuum tank repair work device for molten steel degassing equipment of the present invention, the repair work of the vacuum tank can be performed efficiently.

iii. The labor and time required for handling repair jigs and lifting equipment, which were conventionally performed, can be eliminated, resulting in labor savings and time reduction.

iii. There is no need to drive a forklift or the like inside the factory, which is preferable from a safety standpoint.

iv Easy to operate.

■ The mechanism is simple and easy to assemble.

Demonstrates excellent effects such as

[Brief explanation of the drawing]

The drawing is an explanatory view showing the configuration of a vacuum tank and a repair work device in the molten steel degassing equipment of the present invention. 1...Transportation trolley, 2...Working trolley, 3...Vacuum chamber, 4...Fixed frame, 5
...Vacuum tank, 6...Screw nut, 7...Electric motor, 8...Forklift.

Claims (1)

[Claims] 1. A pedestal for fixing the vacuum tank is installed on the trolley for transporting the vacuum tank in the molten steel degassing equipment, and a working trolley for transporting the repair jig is movably mounted, and the repair jig is A vacuum tank repair work device, characterized in that the transportation trolley is equipped with a lifting device for positioning the height of the vacuum chamber.