JPS59153569A - Pan tilting device - Google Patents

Abstract

PURPOSE:To treat safely and exactly slag by connecting a cylinder device to a pan rest fitted freely verticaly rotatably to supporting frames on a floor and specifying the height of the revolving shaft of the pan rest. CONSTITUTION:A shaft 16 fixed to both end parts of a pan rest 10 and projects horizontally is freely rotatably built in bearings 17 fixed to the top end of two pieces a set of supporting frames 18 erected and fixed on a floor. The pan rest 10 has the shape in which the side parts and bottom part are closed. Said rest is connected to the end of the piston rod of a cylinder device 21 having the one end fixed to the frames 18, by means of the horizontal shaft 12a built in the bearings 12 fixed in the side parts. The hook of an overhead crane is hooked to the hook pin 6 of a casting pan 1, and the pan 1 is carried and is lowered into the perpendicularly held rest 10. The shaft 16 in this stage is so positioned as to be lower than the pin 6 and higher than the center of gravity of the pan 1. When the device 24 is contracted, the rest 10 rotates around the shaft 16 and slag is dischared from the pan 1.

Description

[Detailed description of the invention] [Field of application of the invention] The present invention relates to a tilting device for a casting pot.

[Prior art]

Slag treatment is the process of removing the slag floating on the surface of molten metal placed in a casting pot, leaving only the molten metal in the casting pot.

Conventional slag treatment is as shown in Figures 1 and 2 (a hook 2 supported vertically from an overhead crane is hooked onto a pin 6 for hooking the casting pot 1, and the casting pot 1 is lifted up by the overhead crane. Next, the rope 5 let out from the auxiliary winch of the overhead crane is hooked to the bottom of the casting pot 1 and connected to the hole 3, and then the rope 5 is pulled up by the auxiliary winch and the casting pot 1 is moved around the pin 6 into the second hole. It is tilted as shown in the figure.In this way, the slag floating on the surface of the molten metal in the casting pot 1 is discharged to the outside of the casting pot 1.

In such a conventional example, the position of the pin 6 is set far above the center of gravity of the casting pot 1 so that the casting pot 1 can be stably lifted by the hook 2.

Therefore, when tilting the casting pot 1, a large tension is applied to the rope 5, and the load on the auxiliary winch is also heavy. Due to this damage accident, for example, when the tension of the rope 5 is lost due to the rope being cut, the hanging casting pot 1 swings greatly around the pin 6, and the swinging is difficult to stop. Accidents are likely to occur when the pot 1 hits surrounding equipment, such as the slag catcher.In addition, when discharging slag floating on the surface of molten metal, the inclination angle of the casting pot 1 must be finely adjusted. However, finely adjusting the inclination of the casting pot 1 in the air after lifting it from a crane and determining the inclination angle is difficult because the casting pot 1 is floating in the air. This makes it unstable, extremely difficult, and potentially dangerous.

[Purpose of the invention]

An object of the present invention is to perform slag treatment safely and accurately.

[Summary of the invention]

The present invention provides a casting pot in which a pot holder is pivoted to a support frame supported on a floor to freely rotate up and down, a piston cylinder device is connected to the pot holder, and a rotating shaft of the pot holder is housed in the pot holder. The height of the casting pot hook is higher than the center of gravity of the pin (and the hook of the casting pot is lower than the pin).

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 3 to 7.

2 on the floor where the hook of the overhead crane can reach.
A set of individual support frames 18 is erected and fixed. A bearing 17 is fixed to the upper end of the support frame 18. The bearing 17 has a pot holder 10
A rotary shaft 16 is rotatably incorporated therein. Rotating axis 1
6 are fixed to both ends of the pot holder 10 and protrude horizontally. As shown in FIG. 3, the pot holder 10 has a shape in which three sides and a bottom are closed, and guides 11. 13 is fixed. A stopper 1 is provided on the bottom surface of the pot holder 10.
4.15 protrudes downward and is fixed, and each stopper 1
4.15, the stopper receiver 19 protrudes upward onto the floor and is fixed. A bearing 12 is fixed to the side of the pot holder 10, and a horizontal shaft 1 incorporated in this bearing 12
The piston rond end of the piston cylinder device 21 is connected to 2a. Piston/cylinder device 21
The cylinder is engaged with the bearing on the horizontal axis 21a,
The bearing row is fixed to a support frame 18. In addition, support frame 1
A stopper pin is attached to the lower part of the side surface of 8 so that it can be inserted and removed horizontally as shown in FIG. This stopper pin is connected to the upper end of the dogleg-shaped lever 5 by a shaft 26a through an elongated hole 2!5a. The corner of the lever δ is the support frame 18+
It is supported by a horizontal shaft 5d built into a fixed bearing row. The lower end of the lever part is connected to the piston rond end of the piston cylinder device row by a shaft 25c, and the cylinder part of this piston cylinder device U is connected to the support frame 18.
It is connected to a horizontal shaft 24a incorporated in a bearing knife fixed to. In addition, in the part of the casting pot 1 that faces the stopper pin hole when the casting pot 1 is in a vertical state, a long hole n into which the stopper pin can be inserted is vertically drilled.

In this embodiment, the cast pot 1 is lifted and transported by hooking the hook of the overhead crane onto the pin 6I. Next, the cast pot 1 is placed into the pot holder 10 while being lifted, and then the cast pot 1 is lowered to the bottom of the pot holder 10. In the lowered state, the pin 6 is also above the pot holder 10, so the hook 2 can be easily removed from the pin 6. The casting pot 1 is surrounded by guides 11 and 13 to prevent it from shifting. When receiving the casting pot 1 on the pot holder 10, the piston
Extend the cylinder device row to make the stopper pin longer γ
Insert it into the support frame 18 and keep it vertical so that the pot holder 10 does not rotate and shift relative to the support frame 18. By doing this, the cast pot 1 can be easily stored inside the pot holder 10.

Also, when the casting pot 1 is stored inside the pot holder 10, the fifth
As shown in the figure, the rotating shaft 16 is positioned lower than the pin 6 (and higher than the center of gravity G of the casting pot 1).

Next, the piston/cylinder device array is retracted and the stopper pin is pulled out from the long hole r as shown in FIG. Even if the stopper pin is removed from the elongated hole n, the center of gravity G of the casting pot 1 is below the rotating shaft 16, so the casting pot 1 and the pot holder 10 are safely vertical.

After that, when the piston-cylinder device 21 is retracted,
The pot holder 10 rotates around a rotating shaft 16, and slag is discharged from the casting pot 1. The angle of inclination of the casting pot is adjusted by the amount of reduction of the piston-cylinder device 21 to ensure that only slag is discharged. Adjustment of the angle of inclination during slag processing is done with the cast pot supported on a stable floor, so it can be done easily and safely, and the worker on the floor can also adjust the angle of inclination by raising the top surface of the floor as a standard. Since the angle of inclination of step 1 and the discharge condition of slag can be accurately grasped, slag treatment can be carried out even more easily and reliably.

In addition, since the center of gravity G of the casting pot l is located close to the rotation axis 16, the load applied to the piston/cylinder device 21 when the casting pot is tilted is less than when the casting pot is tilted around the pin 6, which prevents breakage of the piston rod, etc. Accidents due to high loads will be reduced.

Therefore, it is safe. Furthermore, since the center of gravity G is close to the rotating shaft 16, even if the piston rod breaks and tilting is no longer maintained, the return rotational force (restoring force) around the rotating shaft 16 in the direction of the arrow in FIG. Since it is small, it returns with a slower rotation in the direction of arrow A than when the pin 6 is turned a. Finally, the stopper 14 and the stopper receiver 19 come into contact, and the return rotation of the casting pot 1 is stopped, and it is safe to prevent large swings or sustained swings.

Furthermore, the tilting work is possible until the stopper 15 hits the stopper receiver 19 (as shown in Fig. 4), but it does not tilt more than the previous angle α, and the center of gravity G becomes too high due to the tilting. There is no danger.

Excessive inclination is likely to occur when the piston-cylinder device 21 loses control in the direction of the reduction action, but
It is safe even in the event of a failure in which this control is lost.

After finishing the slag treatment, the pin 6 is hooked on the hook of the overhead crane and the casting pot 1 is pulled out from the pot holder 10.
At this time, the pot holder 10 is returned vertically and the stopper pin portion is inserted into the long moth to prevent it from wobbling, and the hook makes the work easier.

According to this embodiment, since the casting pot l can be put into the pot holder 10 from the side, the casting pot l gets stuck due to the contact between the bottom of the casting pot l and the upper end of the pot holder 10, which occurs when the casting pot l is inserted from above. It is safe and there are no accidents caused by returning.

Furthermore, since the casting pot 1 is supported and tilted from the stable floor side, slag treatment can be performed reliably and safely.

In addition, since the height of the rotating shaft 16 is placed between the center of gravity O of the casting pot 1 and the pin 6 of the hook of the casting pot 1, the tilting load is small, making it economical, and the probability of malfunctions occurring due to high loads. It is also safe as it is lower. Furthermore, the restoring force of the casting pot 1 in the event of a failure is small, so there is no large swing or long-lasting swing, making it safe. It is possible to prevent the casting pot 1 from falling over or sliding out to the left in the figure. Further, the sliding can also be stopped by the guide 13.

〔Effect of the invention〕

As described above, according to the present invention, the tilting angle is accurately adjusted by supporting the casting pot in a stable place and tilting it, and also by bringing the center of gravity of the casting pot l closer to the center of tilting than before. Since the load on the driving means can be reduced, it is possible to achieve the effect of easily achieving safe and accurate slag treatment.

[Brief explanation of drawings]

FIG. 1 is a partial view of a conventional casting pot support means, FIG. 2 is a side view during slag processing using the support means of FIG. 1, and FIG. 3 is an overall view of an apparatus according to an embodiment of the present invention. Figure 4 is an inverted view of Figure 3, Figure 5 is an elevation view showing the center of gravity of the casting pot and the height arrangement of each part in Figure 4, and Figure 6 is the stopper pin height shown in Figure 3. FIG. 7 is a vertical cross-sectional view of the stopper pin portion shown in FIG. 3. 1... Casting pot, 6... Casting pot hook is pin, 10... Pot holder, 16... Rotating shaft, 17.
...Bearing, 18 ... Support rod 1 diagram
Age: 2m, age: t6 diagram

Claims (1)

[Claims] 1. A pot holder is pivoted to a support frame supported on the floor so that it can rotate freely up and down, a piston/shifter device is connected to the pot holder, and the rotating shaft of the pot holder is fixed to the caster when the pot holder is housed in the pot holder. A pot tilting device in which the casting pot hook is arranged at a height higher than the center of gravity of the pot and lower than the pin.