KR100798072B1 - Apparatus for opening ladle - Google Patents

Abstract

The present invention relates to a ladle automatic opening device, and more particularly, to an automatic opening device for use when forcibly opening the steel when the sliding nozzle which is the molten steel outlet of the ladle in the steel mill playing process is not natural opening. . The ladle automatic opening and closing a pair of main frame is fixed to be spaced apart from each other on top of the fixing base; An up-down cylinder installed between the pair of mainframes, and equipped with a manipulator arm for fixing the oxygen opening pipe at an end thereof to perform the opening work; A down detection sensor installed at one front side of the fixing base to detect a fall of the up-down cylinder; An elevating device mounted on the up-down cylinder and configured to elevate the up-down cylinder along a pair of main frames; It includes a control panel for controlling a series of operations. An expansion cylinder is installed between the up-down cylinder and the manipulator arm to extend the manipulator arm to the working position, and the manipulator arm is characterized by a clamping for fixing the oxygen opening pipe. According to the present invention, it is possible to prevent industrial safety hazards that may occur during opening work and to improve the work efficiency due to automation.

Description

Ladle automatic opening device {Apparatus for opening ladle}

1 is a state diagram ladle opening work according to the prior art in the continuous casting equipment,

Figure 2 is a view showing the ladle automatic opening factory of the present invention,

Figure 3 is a view showing the operating state of the automatic ladle opening device according to the present invention.

* Explanation of Signs of Major Parts of Drawings *

1 ladle 2 ladle sliding nozzle

3: molten steel arsenic 4: oxygen opening pipe

5: oxygen socket 6: worker

7: oxygen line 8: ladle turret

9: tundish 10: tundish car

21: fixing base 22: mainframe

23 up-down cylinder 24 oxygen pipe fixed clamping

25: oxygen opening pipe 26: expansion cylinder

27: lifting device 28: operation panel

29: down detection sensor 30: manipulator arm

A: Initial operation ready state B: 1st stage operation state

C: 2 stage operation state D: 3 stage operation state

The present invention relates to a ladle automatic opening device, and more particularly, to an automatic opening device for use when forcibly opening the steel when the sliding nozzle which is the molten steel outlet of the lower ladle in the steel mill playing process is not natural opening. .

In general, the ladle 1 is for injecting molten steel melted in the steelmaking furnace into a turndish 9 as shown in FIG. 1, and the molten steel is applied to the bottom of the ladle 1 in which the molten steel is contained. A cassette equipped with a top nozzle and a collect nozzle for injection into the tundish 9 is installed, and a sliding nozzle 2 inserted into the tundish 9 is fitted into the collect nozzle.

The top nozzle serves to inject molten steel into the tundish 9 through the nozzle hole therein. The top nozzle protects the top nozzle and the cassette plate from the molten steel initially introduced into the ladle 1, and naturally opens the nozzle hole. The wheeler is fed into the top nozzle hole during the preparation of the ladle. Then, after installing the sliding nozzle in the collect nozzle of the lower ladle cassette, when the collect nozzle is aligned with the top nozzle, the wheeler which blocks the top nozzle hole flows and the hole is opened and the molten steel is tundished through the sliding nozzle (2). It is ejected to (9).

However, since the wheeler layer directly in contact with the molten steel in the ladle is hardened by the hot molten steel, even if the nozzle is opened as described above, the molten steel may not be spilled by being blocked by the hardened wheeler layer. When the wheeler is cured in this way, work to open the wheeler layer must be performed.

In the conventional case, the molten steel is placed in the ladle 1 in steelmaking and then the ladle sliding nozzle 2 is opened after being seated in the ladle turret 8 to the tundish 9 when it is naturally opened. Molten steel injection was normal.

However, if the natural opening does not work, as shown in FIG. 1, the worker 6 climbs on the tundish car 10 and mounts the oxygen opening pipe 4 to the oxygen socket 5 and then the oxygen line 7. After inserting into the sliding nozzle (2) connected to the high pressure oxygen was blown by manual forced opening work.

However, in the opening work by the oxygen torch, the worker has to open the work directly under the high temperature molten steel ladle, so molten steel is scattered (3) and flowed back, causing frequent accidents of the workers. There was a problem of this deterioration.

Therefore, the present invention has been made in order to solve the above problems, the object of the present invention is to perform a forced opening work automatically by the automatic operation mechanism when the ladle is not a natural opening to perform a forced opening work It is to provide an automatic ladle opening for the ladle.

Ladle automatic opening of the present invention for achieving the above object,                     

A pair of main frames spaced apart from each other and fixed to an upper portion of the fixing base;

An up-down cylinder installed between the pair of mainframes, and equipped with a manipulator arm for fixing an oxygen opening pipe at an end thereof to perform opening work;

A down detection sensor installed at one front side of the fixing base to detect a fall of the up-down cylinder;

An elevating device mounted on the up-down cylinder and configured to elevate the up-down cylinder along a pair of main frames;

It is characterized by including an operation panel for controlling a series of operations.

According to a preferred embodiment of the present invention, an expansion cylinder for extending the manipulator arm to a working position is provided between the up-down cylinder and the manipulator arm, and the manipulator arm is characterized in that a clamping for fixing an oxygen opening pipe is installed. have.

Hereinafter, the configuration of the ladle automatic opening device of the present invention will be described in more detail with reference to the accompanying drawings.

Figure 2 is a view showing the ladle automatic opening factory of the present invention, Figure 3 is a view showing the operating state of the automatic ladle opening device according to the present invention, 21 is a fixing base, 22 is a main frame in the drawing 23 is an up-down cylinder, 24 is an oxygen pipe fixed clamping, 25 is an oxygen opening pipe, 26 is an open cylinder, 27 is a lifting device, 28 is a control panel, 29 is a down sensing sensor, and 30 is a manipulator arm.                     

Referring to FIG. 2, the ladle automatic opening device of the present invention is spaced apart from each other on a fixing base 21 and a fixing base 21 fixed on a tundish car (not shown) for opening work. And a pair of main frames 22 fixed thereto.

Between the pair of main frames 22 is provided with an up-down cylinder 23 for lifting up and down in the opening direction. At the end of the up-down cylinder 23 is mounted a manipulator arm 30 for fixing the oxygen opening pipe 25 to perform the opening work.

Preferably, an unfolding cylinder 26 for extending the manipulator arm 30 to the working position is provided between the up-down cylinder 23 and the manipulator arm 30. The spread cylinder 26 is equipped with a motor and a rack pinion gear (not shown), the extension and shortening process proceeds by their operation. In addition, the manipulator arm 30 is provided with a clamping 24 for fixing the oxygen opening pipe (25).

The front side of the fixing base 21 is provided with a down detection sensor 29 for detecting the lowering of the up-down cylinder 23, and when the lowering of the up-down cylinder 23 is detected, the operation signal 28 Send to).

On the other hand, the up and down cylinder 23 is provided with a lifting device 27 for lifting up and down the cylinder along a pair of main frame 22, the lifting device 27 is a motor and gear or chain (not shown) It is driven up and down by the operation.

An operation panel 28 for controlling such a series of operations is provided to collectively control the operation of the ladle automatic opening device of the present invention.

Hereinafter, the operation of the ladle automatic opening device of the present invention with reference to FIG.

As shown in FIG. 3, in the initial operation preparation state A in which the fixing base 21 is fixed on a tundish car (not shown) and is pinched between the main frames 22, the oxygen opening pipe ( 25) is fixed by the oxygen pipe fixed clamping 24, the operation operation button "ON" in the operation panel 28, the up-down cylinder 23 is operated by the motor drive and starvation movement of the first stage operation state (B) Descending direction.

Then, when down of the up-down cylinder 23 is detected by the down sensor 29, the unfolding cylinder 26 in the two-stage operation state (C) is driven by the motor and the rack pinion, and the unfolding is maximized. .

The expansion cylinder 26 in the three-stage operation state (D) is lifted by the motor and starvation of the elevating device 27 and inserted into the ladle sliding nozzle 2 so that the preparation for the opening is completed. When the high pressure oxygen operation button "ON" in the operation panel 28, the high pressure oxygen is input and the opening work is automatically performed.

When the opening work is completed by using the open factory of the present invention, the high pressure oxygen operation button "OFF" on the operation panel 28, the high pressure oxygen is blocked, and then the operation operation button on the operation panel 28 after the confirmation operation. If it is "OFF", the up-down cylinder 23 and the spreading cylinder 26 are lowered by the motor and internal starvation of the elevating device 27 in the three-stage operating state D, and the two-stage operating state B is obtained.

When the down detection sensor 29 detects the fall of the up-down cylinder 23, the unfolding cylinder 26 is shortened to its original state by driving the motor and the rack pinion, thereby becoming a first stage operation state (B).

After that, the motor is driven by the lifting device 27 and starvation, and ascends immediately to the mainframe 22 to be ready for the initial operation (A) after the operation is completed, the oxygen opening pipe 25 is fixed to the oxygen pipe Withdrawal from clamping 24 completes all operations.

As described above, according to the ladle automatic opening device according to the present invention, when the ladle does not have a natural opening, it is possible to fix the oxygen opening pipe on the manipulator arm and perform forced opening work automatically. Safety accidents can be prevented in advance, and work efficiency due to automation can be improved.

Claims (3)

A pair of main frames 22 spaced apart from each other and fixed to an upper portion of the fixing base 21; An up-down cylinder 23 installed between the pair of main frames 22 and equipped with a manipulator arm 30 for performing an opening operation by fixing an oxygen opening pipe 25 at an end thereof is operated up and down in the opening direction. Wow; A down detection sensor (29) installed at one front side of the fixing base (21) for detecting a falling of the up-down cylinder (23); A lifting device (27) mounted on the up-down cylinder (23) for lifting up and down the cylinder (23) along a pair of main frames (22); Ladle automatic opening device comprising a control panel 28 for controlling a series of operations. The method of claim 1, Ladle automatic opening device, characterized in that the spreading cylinder (26) for extending the manipulator arm (30) to the working position between the up-down cylinder (23) and the manipulator arm (30). The method of claim 1, The manipulator arm 30 is a ladle automatic opening device, characterized in that the clamping 24 is installed for fixing the oxygen opening pipe (25).

Images