JPS62248539A - Laddle stand for treating molten metal - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a ladle stand for processing molten metal, particularly for desulfurization processing of molten steel.

(Prior Art and Its Problems) Conventionally, a ladle stand has a lance carrier disposed above a ladle placed in a processing position and capable of vertically moving up and down.

The transport vehicle is provided with a storage chamber for a treatment agent, particularly a desulfurization agent, and communicates with the cavity of the lance.

Furthermore, the lance transport vehicle can be moved to a lance exchange location next to the ladle on which it is placed.

This type of ladle stand is DE-A-245477
6 and MESSO (st57d/ 2000 V■・7
9) is known from the pamphlet TN.

The lance carrier is movable along a vertical guide post, which is rotatably mounted on a foundation laterally remote from the ladle placed in the processing position.

By rotating the guide column, the large lance carrier is pivoted from a position above the ladle in the processing position to a lance exchange position for lance exchange.

Since this lance carrier is subjected to strong vibration loads while the molten metal is being processed, the guide columns must be built strong and therefore heavy.

Due to the long distance from the lance to the guide column, the guide column is subjected to high bending stresses, which must therefore be absorbed by an appropriately stable structure of the guide column and the pivot bearing.

The lance or lance carrier protrudes greatly,
As a result of the instability of the lance guidance involved, the known construction makes it very difficult to facilitate automatic exchange when transporting or exchanging lances at a lance exchange station.

The present invention obviates the above-mentioned disadvantages and difficulties and provides an arrangement in which the lance carrier moves in a simple manner between the placed ladle and the lance exchange station, ensuring trouble-free exchange of the lance. The purpose is to provide hot pot stands.

(Means to Solve the Problems) In order to achieve the above object, the present invention provides a vertical rail guide for a lance carrier provided above a ladle placed in a processing position and above a lance exchange station; A dolly that accommodates a lance carrier that can move between the two rail guides above, and a lance exchange position C that is provided on the lance carrier and is located to the side of the operating position. a lance manipulator that grips and releases the lance, and a lance manipulator that is disposed above the operating position of the lance manipulator and operated by an actuating unit;
It is composed of a connecting means for communicating the storage chamber and the cavity of the lance.

Since the lance carrier needs to protrude slightly from the rail guide, the fixed rail guide is designed to be stable, lightweight, and sufficiently rigid.

This prevents vibrations in the guide rail and inaccuracies in lance guidance. Therefore, as a result, a high level of safety is achieved and manual interference by the operator is avoided during the automatic exchange of the lance by the lance manipulator at the lance exchange station.

Preferably, the lance manipulator is constituted by a vehicle mounted in a horizontally movable manner on a lance truck and operated by actuating means, in which the gripping pliers are actuated by other actuating means.

(Example) The present invention will be described in more detail according to an example shown in the accompanying drawings.

A mounting location l for the ladle 2 in the ladle stand is provided on the foundation. The ladle 2 can then be moved to a storage location l. The ladle 2 is covered with an M4 having an opening for inserting the working lance 5.

To the side of the mounting place 1, a lance changing station 6 is arranged on the foundation, which stations are provided with lance holding means 8 arranged at equal intervals around the periphery and from which the lances 5 depend at their upper ends 9. It consists of a horizontally arranged rotary disk 7 with a

The rotary disk 7 is placed on the foundation! Supported by O. Each lance has at its upper end a collar 2 suspended from lance holding means 8.

Above the ladle rest location l and above the lance exchange station 6, a fixed vertical rail guide 12.13 with two parallel rails 14 of reinforced frame structure is installed at a slightly laterally separated position. It is provided.

The upper ends of the two rail guides are fixed horizontal beams 15 small Niji I
It is possible to reciprocate from one rail guide to the other rail guide along the JIp row 6 fr-1L) 6 center space 1^ke line 15.

This truck 16 is connected to the rail 14 of the rail guide 12.13.
There is a rail 17 disposed above and close to the rail 14 in a straight line with the rail 14. Therefore, the trolley 16 is moved from the first body A, which is shown in solid lines in FIG. The rail 17 is selectively moved to position B, which is shown by a dashed line in the figure, and coincides with the rail 14 of the rail guide 13 disposed above the lance exchange station 6.

The drive motor is indicated at 18 and its energy supply is provided by a flexible moving cable.

The lance transport vehicle 20 is used for raising and lowering the lance 5 and transporting the lance 5 from the lance exchange station 6, and also
A rope winch 2I arranged on the truck 16 and driven by a motor 22 is movable in the vertical direction along the rail guide 12.13.

The truck 16 is arranged above the ladle lid 4 so that the lance 5 can be completely pulled up onto the ladle 2. In that position, the lance carrier 20 is located with the lance 5 on the rail 17 of the truck 16 in the raised position. Therefore,
The lance carrier 20 can reciprocate together with the trolley 16 from one rail guide 12 to the other rail guide I3.

In order to automatically transport the lance 5 from the lance carrier 20 to the rotary disc 7 and to take the lance 5 from the rotary disc 7 to the lance carrier 20, the lance carrier 20 has an intermediate pressure A lance manipulator 24 is provided, which is a wheel that is horizontally movable by a cylinder 23 and guided along a table 26 that horizontally projects from a lance carrier 20 by guide rollers 25. The manipulator 24 is equipped with gripping pliers 27 whose gripping portions 28 are opened and closed by a lever link device 30 by an intermediate pressure cylinder 29.

As is clear from FIG. 3, the lance 5 suspended from the lance carrier 20 is pushed onto the rotary disk 7 by the gripping part 28 by moving the manipulator 24 to the lance exchange position C shown by the dashed line. It will be done. By retracting the manipulator 24 to the operating position shown in solid lines, the lance 5 held by the gripping pliers 27 is pushed into the lance holding means 31 provided on the lance carrier 20.

In order to supply processing chemicals to the molten metal in the ladle 2, the lance 5 is hollow, and the lance carrier 20 has a storage chamber 32 for the processing chemicals. This storage chamber 32 communicates with the cavity 34 of the lance 5 by a duct 33 carrying the treatment chemicals.

A connecting means 35 is provided to automatically communicate the duct 33 with the cavity 34. This connecting means 35
is made of angular vibrator parts 36 and can be raised and lowered by a medium pressure cylinder 37. One end of the angular pipe component 36 is connected to the flexible duct 33. The other end has a conical portion 38 that is inserted into a frustoconical opening 39 at the upper end of the lance 5.

At the lance exchange station, the rotary disc 7
When the lance manipulator 24 of the lance transport vehicle 20 is located on the side of the lance exchange station 6 (
(see FIG. 4) - always rotate one pitch by means of a stepping device which operates either against the empty lance holding means 8 to eject the used lance 5 or against the lance holding means 8 with the lance 5. . The lance exchange station 6 is supplied with the lance 5 by a hoist 40 which is horizontally movable and captures the lance from a lance truck 41.

The tank 42 disposed above the ladle mounting position l is pulled out to the storage area 32 of the lance transport vehicle 20 by means of conveyance/measuring means 43 containing a specially predetermined amount of processing chemicals, and other A supply duct 44 supplies the storage 32.

[Brief explanation of drawings]

Figure 1 is a schematic side view of the ladle stand, Figure 2 is a view taken from the arrow ■ in Figure 1, Figure 3 is an enlarged detailed view of Figure 2, and Figure 4 is a detailed view of Figure 3. It is a sectional view taken along the line IV-IV. 1-Placement location, 2-Ladle, 5-Lance, 6-Lance replacement position, 12.13-Rail guide, 16-Dolly, 20-
Lance carrier, 23.29 ~ Manipulator (vehicle),
32 - Containment chamber, 34 - Space, 35 - Connecting means, 37 - Full operating unit Applicant Hoestor Alpin Akchengesellshaft

Claims (2)

[Claims] (1) A storage chamber 32 is disposed above the ladle 2 placed at the processing position so as to be vertically movable and supplies a processing chemical, particularly a desulfurizing agent, to the cavity 34 of the lance 5, and the ladle A vertical rail guide for the lance carrier 20 is provided above the ladle 2 placed in the processing position and above the lance exchange station 6. 12, 13, a trolley 16 that accommodates a lance carrier 20 movable above the two rail guides 12, 13, and a lance provided on the lance carrier 20 and located to the side of the operating position D. A lance manipulator 24 that is movable forward and backward from the lance carrier 20 to the exchange position C and that grips and releases the lance 5 is disposed above the operating position D of the lance manipulator 24 and is operated by an actuation unit 37. A connecting means 35 that connects the housing chamber 32 and the cavity 34 of the lance.
A ladle stand for processing molten metal, characterized by comprising: (2) The lance manipulator is composed of a car 24 mounted on a horizontally movable lance carrier, and has gripping pliers 27 that are operated by an operating means 23 and operated by another operating means 29. A ladle stand for processing molten metal according to claim 1, wherein the ladle stand is a ladle stand for processing molten metal.