JPH087962Y2 - Swing tower for ladle - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladle swing tower for use in, for example, vertical continuous casting equipment, for moving a ladle storing molten metal from a trolley or the like to above a tundish of the vertical continuous casting equipment.

[0002]

2. Description of the Related Art When pouring molten steel in a ladle into a tundish of a vertical continuous casting facility, it is necessary to incline the ladle so that the molten steel does not remain in the ladle as much as possible so that the nozzle is located downward. . A typical prior art is disclosed in Japanese Utility Model Publication No. 2-31221. In this prior art, a pair of lifting beams provided on both sides of the ladle are driven up and down by a total of four hydraulic cylinders, and tilting beams supporting both sides of the ladle are axially attached to the lifting beams. The tilting beam is driven by a hydraulic cylinder. Such a prior art requires a large number of hydraulic cylinders and has a complicated structure.

Another prior art is Japanese Utility Model Laid-Open No. 58-189063.
Is disclosed. In this prior art, a pedestal supporting both sides of a ladle is supported on a revolving tower by using parallelogram links, and an eccentric pin is provided between one end of the link forming the parallelogram link and the revolving tower. Is used to tilt the pedestal, and thus the ladle. Such a prior art requires a crank mechanism using an eccentric pin in addition to the parallelogram link, and has a complicated structure.

[0004] Still another prior art is, in fact, Japanese Utility Model Laid-Open No. 59-25.
352. In this prior art, a pair of supports that support both sides of the ladle are driven by being tilted up and down using a total of four worm jacks. Even in such prior art, it is desired to further simplify the configuration.

Yet another prior art is shown in simplified form in FIG. The swing tower main body 1 is rotatable about a vertical axis 2, and a parallelogram link mechanism 6 including links 4 and 5 is formed between the swing tower main body 1 and the receiving member 3, and the parallelogram link mechanism is formed. When the mechanism 6 is driven and the axis 8 of the ladle 7 is tilted with respect to the vertical line, the support portions 9 fixed to both sides of the ladle 7 are provided.
The receiving member 3 supports the receiving member 3, and thus the ladle 7 is inclined so that the nozzle 10 formed on the bottom of the ladle 7 is located downward, and the attitude of the ladle 7 is maintained.

The ladle 7 in which molten steel is stored is shown in FIG. 8 (1).
Is carried by a dolly 11 at this time, at which time the axis 8 of the ladle 7 is vertical.
Is mounted on the carriage 11. In this state, the receiving member 3
When trying to receive the supporting portion 9 of the ladle 7 as shown in FIG. 8B, the supporting portion 9 of the ladle 7 is received.
The lower surface 9a of the lower surface 9a is a horizontal surface, while the receiving surface 3a of the receiving member 3 is inclined, and therefore, when the supporting portion 9 is received and supported by the receiving member 3, the end portion of the lower surface 9a and the receiving surface 3a are And are in line contact with each other as indicated by reference numeral 12, and in this state, the receiving member 3 is lifted by the link mechanism 6, whereby the ladle 7 is suddenly angularly displaced in the direction of the arrow 13, and the ladle 7 is supported. Becomes unstable.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide a ladle swing tower having a simple structure and capable of stably moving up and down the ladle.

[0008]

According to the present invention, a support portion 43 is provided on each side and a lower surface 44 of each support portion 43 is provided.
In the swing tower for ladle that moves the ladle 22 which is perpendicular to the ladle axis 36, the swing tower main body 16 rotating around the vertical axis and the lower surface 44 of each of the supporting portions 43 are in surface contact with each other to receive the lower surface 44 thereof. A receiving member 47 having a receiving portion 48 that supports the upper link 56 and a lower link 57 that form a pair and are vertically spaced from each other.
In the link mechanism 51, the one end of the upper link 56 is pin-coupled to the swing tower body 16 by the first pin 52, and the other end of the upper link 56 is the receiving member 4
7 by a second pin 53 and a lower link 57.
One end of the lower link 57 is pin-coupled to the swing tower body 16 by the third pin 54, and the other end of the lower link 57 is pin-coupled to the receiving member 47 by the fourth pin 55. Is short and has an upper link 5
6 and the lower link 57 become downward as the first and third pins 52, 54 become the second and fourth pins 53, 55. The axes of the second and fourth pins 52, 53, 55 and the virtual point 62 are at respective vertex positions of the parallelogram, and the axis of the third pin 54 is the axis of the fourth pin 55 and the virtual point 62.
Is located closer to the fourth pin 55 than the imaginary point 62 on the straight line connecting with and the receiving portion 48 of the receiving member 47 is in surface contact with the lower surface 44 of the supporting portion 43 on the receiving portion 48 at the first position. Link mechanism 5 in a posture to receive the lower surface 44 of the lever
1 and the link mechanism 51 to move the receiving member 47 to the first position and a second predetermined position above the first position.
A swing tower for a ladle, including a drive means that is displaced between the swing tower and the position.

[0009]

According to the present invention, the support portions provided on both sides of the ladle are supported by the receiving member, and the link mechanism is provided between the receiving member and the swing tower body which rotates about the vertical axis. The link mechanism is configured such that, when the receiving member is in the first position, the receiving portion of the receiving member and the lower surface of the support portion are in surface contact with each other to receive the link member. According to the present invention, the ladle can be raised in a stable posture and the abrupt angular displacement of the ladle as in the above-described prior art is prevented. A nozzle is formed on the bottom of the ladle at a position deviated from its axis, and the ladle supported by being received by the receiving member is located at an outer position where the nozzle is distant from the swing tower body. Shall be placed. At a second predetermined position in which the link mechanism is driven by the driving means so that the receiving member injects the molten metal into the tundish above the first position, the attitude is such that the ladle is inclined downward as it goes outward. And the nozzle position is lowered. This simplifies the structure and allows the heavy ladle in which the molten metal is stored to rise in a stable position.After pouring the molten metal into the tundish, the ladle can be stably lowered to move the bogie. Etc. can be loaded.

[0010]

1 is a side view of an embodiment of the present invention.
A swing tower body 16 is supported by a thrust bearing 17 on a base 15 provided at a fixed position, and is freely rotatable around a vertical axis 18. A gear 19 is fixed to the lower portion of the swing tower body 16, and the gear 19
Is engaged with a gear 21 connected to an output shaft of a motor 20 provided at a fixed position and is rotationally driven.

The swing tower body 16 is provided with link mechanisms 51, 51a for supporting the ladles 22a, 22b. Reference numeral 2 is a general reference numeral 22a and 22b.
It may be indicated by 2. The ladle 22 is mounted on a carriage 26 that is movable in the left-right direction in FIG. 1 along a rail 25. Molten steel is stored in the ladle 22, and a swing tower according to the present invention is used for the reference numeral 22b.
As shown in FIG. 2, molten steel is injected from the nozzle 29 into the tundish 28 of the vertical continuous casting equipment 27 as shown in FIG. A mold 30 is provided below the tundish 28, and thus a cast piece 31 is obtained.

FIG. 3 is a sectional view of the ladle 22. The refractory 32 such as brick is covered with a steel shell 33, and molten steel 34 is stored inside the refractory 32. A nozzle 29 is provided on the bottom 35 of the ladle 22 at a position displaced from the axis 36, and the nozzle 29 can be opened and closed by a sliding gate 38. The sliding gate 38 is driven in the left-right direction in FIG. 3 by the double-acting cylinder 39. A table 40 is provided on the bottom 35 of the ladle 22. On both sides of the ladle 22, there are support portions 43 protruding outward.
Is provided, and the lower surface 44 of the support portion 43 has an axis 3
It is a plane perpendicular to 6.

FIG. 4 is a plan view of the swing tower shown in FIG. 1, and FIG. 5 is a ladle 22 mounted on a carriage 26.
FIG. Wheels 45 are provided on the carriage 26 and guided by the rails 25 described above. The lower surface 44 of the supporting portion 43 of the ladle 22 is provided with the cradle 4 provided on the carriage 26.
6 is mounted on the horizontal upper surface.

In order to receive and raise the ladle 22 on the carriage 26 by the swing tower of the present case, the receiving member 4
7 is provided. The receiving member 47 is formed in a substantially L shape, and is provided on the outer side of the receiving base 46 of the carriage 26 at the support portion 4.
3 has a receiving portion 48 that receives and supports the lower surface 44, and a connecting portion 49 that is continuous with the receiving portion 48 and that rises and extends on the swing tower body 16 side. A projecting piece 50 is formed on the receiving portion 48 to prevent the lower surface 44 of the supporting portion 43 from shifting on the upper surface of the receiving portion 48. The receiving member 47 is a ladle 2
The link members 51 are provided on both sides of each of the two, and a pair of link mechanisms 51 are connected to each of the receiving members 47. The link mechanism 51 includes a pair of links 56 and 57 that are pin-coupled with each other by pins 52 to 55 that are vertically spaced from each other between the swing tower body 16 and the receiving member 47.
The links 56 of each link mechanism 51 are connected to each other by a connecting member 58, and a piston rod 60 of a double-acting hydraulic cylinder 59 is connected to the connecting member 58 by a pin 61. The cylinder 59 is angularly displaceable on a bracket 71 fixed to the swing tower body 16 by a shaft 60 in a trunnion manner. Swing tower body 1
6, a link mechanism 51a similar to the link mechanism 51 is similarly provided with a shift of 180 degrees around the axis 18, and the corresponding components are indicated by the same numerals with a suffix a.

FIG. 6 is a simplified view of the link mechanism 51. In the first position, the axes of the pins 52, 53 and 55 and the point indicated by reference numeral 62 are at the respective vertex positions of the parallelogram, and the axis of the pin 54 is a straight line connecting the axis of the pin 55 and the point 62. It is closer to the pin 55 than the point 62. Thus, the link 57 is shorter than the link 56. In the first position, each link 56, 57 has a pin 52, 5
It is inclined so that it becomes downward as it goes from 4 to pins 53 and 55. When the cylinder 59 is contracted, as shown in FIG.
As shown by the solid line in FIG. 3, the receiving portion 48 of the receiving member 47 and the lower surface 44 of the supporting portion 43 of the ladle 22 are in the first position where they are brought into surface contact with each other, and at this time, the axis 36 of the ladle 22 is placed. Is vertical. In this way, the receiving member 4
From the state where the 7 receives the ladle 22 on the carriage 26, the cylinder 59 is extended to angularly displace the links 56 and 57, and the ladle 22 is lifted to the state indicated by reference numeral 63 in FIG. At this time, in FIG. 6, each component is shown with a numeral and a subscript b. In this way, in the second position where the receiving member 47 is raised and is indicated by reference numeral 47b, the axis of the pin 53b is outside (left of FIGS. 1 and 6) the axis of the pin 55b, which causes the receiving member 47 to move. Therefore, the ladle 22 is tilted.

The ladle 22 storing molten steel on the carriage 26
So that its nozzle 29 is located farther from the swing tower body 16 than the axis 36 of the ladle 22,
The ladle 22 is mounted on a carriage 26. Therefore, the ladle 22 in which the molten metal is stored is received from the carriage 26 by the receiving member 4
When it is received and raised by 7, the position of the nozzle 29 is
Bottom 3 of the ladle 22 inclined downward as it goes outward
It is near the lowest point of 5. Therefore, the ladle 22 is raised by the link mechanism 51, and then the swing tower body 1
The lathe 22 is positioned above the tundish 28 by turning the motor 6 by 180 degrees by the motor 20 and then the cylinder 39 provided at the lower part of the tundish 28 is driven to drive the sliding gate 38.
When moving the nozzle 29 to open the nozzle 29 and inject the molten steel in the ladle 22 into the tundish 28, the ladle 22 is inclined so that the bottom 35 of the ladle 22 becomes lower on the nozzle 29 side. Most of the molten steel inside can be poured into the tundish 28. The axis 36 of the ladle 22 when the molten steel is poured into the tundish 28 by the ladle 22 is inclined, for example, about 1.5 degrees with respect to the vertical plane.

The ladle swing tower of the present invention can be widely applied not only to molten steel but also to ladle for molten metal which is another molten metal.

[0018]

As described above, according to the present invention, between the receiving member that receives and supports the supporting portions provided on both sides of the ladle and the swing tower body that rotates around the vertical axis, the ladle is provided. The link mechanism is provided on both sides, and the link mechanism moves to the tundish above the first position where the link mechanism comes into surface contact with the lower surface of the receiving portion and the supporting portion of the receiving member to receive the lower surface. Since the nozzle position is located below the slanted ladle bottom at the predetermined second position for injecting the molten metal, and the link mechanism is driven by the driving means, the configuration is simplified and the ladle is stabilized. It is possible to move up and down.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of the present invention.

[Figure 2] Tundish 2 using the swing tower
8 is a simplified diagram showing a state in which molten steel is being injected into No. 8.

FIG. 3 is a cross-sectional view of the ladle 22.

FIG. 4 is a plan view of the embodiment shown in FIG.

FIG. 5 is a cross-sectional view showing a state in which a ladle 22 is mounted on a carriage 26.

FIG. 6 is a diagram showing a simplified link mechanism 51.

FIG. 7 is a simplified side view of the prior art.

FIG. 8 is a diagram showing the prior art shown in FIG. 7.

[Explanation of symbols]

 15 Base 16 Swing Tower Main Body 22 Ladle 26 Truck 29 Nozzle 38 Sliding Gate 43 Support Part 47 Receiving Member 51 Link Mechanism 52-55 Pins 56, 57 Link 59 Double-acting Hydraulic Cylinder

Claims (1)

[Scope of utility model registration request] 1. A swing that rotates around a vertical axis in a ladle swing tower that moves a ladle 22 that has support portions 43 provided on both sides and a lower surface 44 of each support portion 43 is perpendicular to the ladle axis line 36. The tower body 16 and the lower surface 44 of each of the supporting portions 43 are in surface contact with each other and the lower surface 44
A link mechanism 51 including a receiving member 47 having a receiving portion 48 that receives and supports the upper link 56, and a pair of upper and lower links 56 and 57 that are vertically spaced apart from each other. Is pin-coupled to the swing tower body 16 by the first pin 52, the other end of the upper link 56 is pin-coupled to the receiving member 47 by the second pin 53, and one end of the lower link 57 is the swing tower body 16.
And the other end of the lower link 57 is pin-coupled to the receiving member 47 by the fourth pin 55, and the lower link 57 is shorter than the upper link 56. The lower link 57 and the first and third
At the predetermined first position of the receiving member 47 which is inclined downward from the pins 52, 54 to the second and fourth pins 53, 55, the first, second and fourth pins 52, 5 are provided.
The axes of 3, 55 and the virtual point 62 are located at the respective vertex positions of the parallelogram, and the axis of the third pin 54 is on the straight line connecting the axis of the fourth pin 55 and the virtual point 62 from the virtual point 62. Is also the fourth
The link mechanism, which is located near the pin 55, is in a posture in which the receiving portion 48 of the receiving member 47 is in surface contact with the lower surface 44 of the supporting portion 43 on the receiving portion 48 and receives the lower surface 44 at the first position. 51, and driving means for driving the link mechanism 51 to displace the receiving member 47 between the first position and a predetermined second position above the first position. Swing tower for ladle.