JP3902433B2 - Converter slag cutting equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slag cutting device for a converter that prevents slag from flowing out by introducing a slag dart into a tapping hole of the converter at the end of the tapping from the converter.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been known an apparatus for carrying out a slag cut by causing a carriage holding a slag dart at the tip of an arm to travel in the same direction on a linearly extending rail and bringing it into a converter.
[0003]
FIG. 11 shows a specific structure thereof. The slag dart 1 is held at the tip of an arm 3 extending from the carriage 2 and the rail 4 is inclined toward the furnace port of the converter 5 at the end of the tapping. When the carriage 2 is run on the rail 4, it is brought into the furnace body, rotated downward and inserted toward the hot water outlet 6. The rail 4 is provided in the ceiling part of the front part of the converter so as not to obstruct the workers who perform the work around the furnace, and when used, the front part close to the converter 5 is lowered by a lifting mechanism 7 such as a cylinder, as shown in the figure. Held diagonally. Therefore, the cart 2 holding the slag dart 1 also runs diagonally.
[0004]
However, although there is no problem in a converter having a large capacity and a large furnace diameter, in the small-capacity converter 5, when the carriage 2 is caused to run obliquely downward, the arm 3 extending from the carriage 2 plunges into the molten steel in the furnace, or The slag darts 1 cannot be transported to the intended hot water outlet 6 because they hit the furnace port. For this reason, in the case of the converter 5 with a small capacity, it is desired that the slag darts 1 be made to enter as much as possible in the direction of the slag darts during transportation in the furnace, but the entire rail 4 is almost horizontal. If you try to install it with, it will interfere with the furnace work. Accordingly, the carriage 2 and the rail 4 are mounted at a high position that does not interfere with the furnace work at a position away from the converter 5, and when the slag dart 1 moves forward in the furnace, the horizontal or higher direction. It is required to be transported.
[0005]
Thus, in order to change the moving direction of the slag darts 1 in a curved line, a sensor for detecting the position of the carriage 2 on the rail 4 is provided, and as the carriage 2 moves to the tip of the rail 4, it moves up and down. A method of changing the gradient of the rail 4 by operating the mechanism 7 can be considered. However, since the temperature near the furnace port of the converter 5 is very high, there is a risk of trouble in the control system due to malfunction of the sensor. In the worst case, the arm 3 and the slag dart 1 extending from the carriage 2 collide with the furnace port. There is also a risk. For this reason, it is desirable to enable the above operation without relying on a software control system.
[0006]
[Problems to be solved by the invention]
The present invention solves the above-mentioned conventional problems, and makes the movement trajectory curved in a hardware manner without relying on a soft control system, so that the arm and the furnace port that extend from the carriage can interfere with each other even in a small capacity converter. It was made in order to provide the slag cutting device of the converter which brought a slag dart into the furnace, and was able to insert it in the tapping hole.
[0007]
[Means for Solving the Problems]
The present invention made in order to solve the above-mentioned problems is a slag of a converter that performs a slag cut by running a carriage holding a slag dart for sealing a tapping hole on a rail that extends into the converter furnace. In the cutting device, a rail provided with a lifting mechanism for lowering the front part of the rail when in use is provided with a front wheel traveling part and a rear wheel traveling part of the carriage separately, and an angle is provided between them, thereby It is characterized in that the angle of the carriage is changed as it travels on the top.
[0008]
According to the present invention, the angle of the carriage relative to the rail can be changed as the vehicle travels by separately providing the rails for the front wheel traveling part and the rear wheel traveling part of the carriage and providing an angle between them. . For this reason, while maintaining the rail angle constant, the traveling direction of the carriage at the tip of the rail can be made closer to the horizontal, and even in a small capacity converter, the slag dart can be removed from the furnace while avoiding interference between the carriage and the furnace opening. It can be brought in and inserted into the hot water outlet.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall view of an embodiment of the present invention, in which a cart with a slag dart 1 held at the tip of an arm 3 is run toward the furnace of the converter 5 at the end of the hot water, It is the same as before that the slag is prevented from flowing out by inserting the slag dart 1 into the block 6 and sealing it.
[0010]
However, as shown in FIG. 2, a special rail 10 and a carriage 20 are used in the present invention. That is, the rail 10 includes a front wheel traveling unit 11 and a rear wheel traveling unit 12 that is angled with respect to the front wheel traveling unit 11. In this embodiment, the inner side of the central wall 13 is a U-shaped front wheel traveling unit. 11, the outer side is a U-shaped rear wheel traveling unit 12. As shown in the figure, the front wheel traveling unit 11 extends along the upper end surface of the rail 10, but the rear wheel traveling unit 12 is at the same height as the upper end surface of the rail 10 at the rear end of the rail 10. It inclines downward toward the front part of the rail 10 close to the furnace 5 and is at a position lower than the lower surface of the front wheel traveling part 11 at the front end. In this embodiment, the front wheel traveling unit 11 and the rear wheel traveling unit 12 are formed on the same rail 10, but a rail having the front wheel traveling unit 11 and a rail having the rear wheel traveling unit 12 are provided separately. There is no problem.
[0011]
On the other hand, the cart 20 includes vertical brackets 21 and 22 at the front and rear portions, and wheels 23 and 24 are attached to the upper ends of the vertical brackets 21 and 22, respectively. The wheels 23 of the front vertical bracket 21 are mounted outward so as to be able to travel in the front wheel traveling part 11, and the wheels 24 of the rear vertical bracket 22 are directed inward so as to be able to travel in the rear wheel traveling part 12. Installed on. The lower part of the rear vertical bracket 22 is bent in the width direction so that it can be engaged with the rear wheel traveling part 12 from the outside of the rail 10.
[0012]
In this way, the carriage 20 is suspended from the rail 10 by the vertical brackets 21 and 22 having the wheels 23 and 24, and can travel on the rail 10 by a traveling mechanism (not shown). When the carriage 20 is at the rear part of the rail 10, the difference in height between the front and rear wheels 23 and 24 is small, so the carriage 20 takes a posture substantially parallel to the rail 10, but the carriage 20 travels in front of the rail 10. As the rear wheel traveling unit 12 becomes lower, the rear wheel 24 lowers than the front wheel 23, and the carriage 20 takes an upward posture with respect to the rail 10.
[0013]
Hereinafter, the movement of the entire apparatus will be described with reference to FIGS.
FIG. 3 is a diagram showing a standby state. At this time, the rail 10 is lifted upward by an elevating mechanism 7 such as a cylinder so that it does not interfere with the furnace work. The carriage 20 is at the rear end of the rail 10. In this state, the molten metal in the converter 5 is discharged from the outlet hole 6.
[0014]
When the end of the hot water is approaching, the elevating mechanism 7 lowers the front portion of the rail 10 toward the furnace opening as shown in FIG. 4, and the slag dart 1 at the tip of the arm 3 is rotated upward as shown in FIG. Let Then, as shown in order in FIG. 6 and subsequent figures, the carriage 20 is caused to travel toward the converter 5. As described above, as the carriage 20 travels in front of the rail 10, the carriage 20 takes an upward posture with respect to the rail 10, so that the carriage 20 and the arm 3 gradually become substantially horizontal even when the rail 10 is kept at a fixed position. Take an angle.
[0015]
Then, as shown in FIG. 9, after the slag dart 1 reaches a position directly above the outlet hole 6, the slag dart 1 is turned downward at the end of the arm 3 by a known mechanism, and the front part of the rail 10 is further moved by the lifting mechanism 7. The tip of the slag dart 1 is inserted into the tap hole 6 while being lowered. Thereafter, when the chuck is opened and the slag dart 1 is released, the slag dart 1 enters deep into the hot water outlet hole 6 by the flow of the molten metal and blocks the outflow of the slag. Thereafter, the carriage 20 returns to the rear end of the rail 10, and the rail 10 is also lifted upward by the elevating mechanism 7 and returns to the position of FIG.
[0016]
FIG. 1 illustrates the above-described states in a superimposed manner. As is clear from this figure, as the carriage 20 travels in front of the rail 10, the tip of the arm 3 moves upward so as to approach the horizontal, and the slag dart 1 is brought into the furnace while avoiding interference with the furnace opening. It becomes possible to insert from directly above the hot water outlet 6.
[0017]
【The invention's effect】
As described above, according to the slag cutting device for a converter according to the present invention, the front wheel traveling portion and the rear wheel traveling portion of the carriage are individually provided on the rail, and an angle is provided between them, thereby Since the angle of the carriage is changed as the vehicle travels, even in a small capacity converter, the slag dart can be brought into the furnace and inserted into the tapping hole while avoiding interference between the carriage and the furnace port. In addition, since it is not necessary to control the height of the rail by detecting the position of the carriage, there is no risk of malfunction, and the rail swings upward in the standby state, which interferes with the work around the furnace. There is nothing.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view showing an entire embodiment of the present invention.
FIG. 2 is a diagram showing the relationship between a rail and a carriage, wherein A is a perspective view of the carriage, B is a perspective view of the rail, and C is a perspective view in a combined state.
FIG. 3 is a partial cross-sectional view in a standby state.
FIG. 4 is a partial cross-sectional view in a state where a rail is lowered.
FIG. 5 is a partial cross-sectional view showing a state in which the slag dart is turned upward.
FIG. 6 is a partial cross-sectional view showing a state in which the forward movement of the carriage is started.
FIG. 7 is a partial cross-sectional view of the carriage in a forward state.
FIG. 8 is a partial cross-sectional view of the carriage in a forward state.
FIG. 9 is a partial cross-sectional view showing a state in which the slug dart is turned downward.
FIG. 10 is a partial cross-sectional view of a state in which the tip of the slag dart is inserted into a hot water outlet hole.
FIG. 11 is a partial cross-sectional view showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Slag dart 2 Carriage 3 Arm 4 Rail 5 Converter 6 Hot water outlet 7 Lifting mechanism 10 Rail 11 Front wheel traveling part 12 Rear wheel traveling part 13 Central wall 20 Bogie 21 Front vertical bracket 22 Rear vertical bracket 23 Wheel 24 Wheel

Claims (1)

In a slag cut device for a converter that performs a slag cut by running a carriage holding a slag dart for sealing a tapping hole on a rail extending toward the inside of the converter furnace, in order to lower the front part of the rail during use A front wheel traveling part and a rear wheel traveling part of the carriage are individually provided on a rail equipped with a lifting mechanism, and an angle is provided between them to change the angle of the carriage as it travels on the rail. A slag cutting device for a converter characterized by the fact that

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