JP2906402B2 - Detachable trolley for horizontal ladle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladle with a horizontal ladle.

[0002]

2. Description of the Related Art A ladle for transporting molten steel has a refractory material adhered inside a steel case. However, the refractory material is damaged as it is used, so that it must be repaired periodically or appropriately. Generally, for convenience of work, the ladle is tilted by 90 ° (hereinafter, this state is referred to as “sideways”), and the work direction is horizontal. On the other hand, there is a case where a ladle is covered with a ladle for the purpose of preventing a temperature drop of molten steel. In this case, it is necessary to remove the ladle when repairing the ladle. As a technique therefor, for example, JP-A-59-202160 Japanese Patent Laid-Open Publication “Ladle lid attachment / detachment device for molten steel ladle” has been proposed.

According to FIG. 2 of the above publication, a pair of lifting handle members (3A, 3B) on the pot lid (2) side are connected to a support member (4).
A, 4B) and hooks (5A, 5B), lift and remove by pulling sideways. It is explained that if this technology is adopted, the opening and closing work of the pot lid by the overhead crane and the slinging worker can be abolished. ing.

[0004]

However, even with the above technique, there are the following problems. A significant lifting stroke is required to disengage the pot lid from the ladle. This is because if the rising stroke is small, the meshing state cannot be released. Moreover, if the amount of elevation is too large, the engagement state is re-engaged (in FIG. 2 of the above-mentioned publication, 2Aa engages with 1AX), so that adjustment of the elevation stroke is not easy. According to the embodiment, because the device is fixed to the foundation,
The device closes the front of the ladle opening, which gets in the way.
To secure space for inspection and repair work, it is necessary to make the horizontal pulling stroke sufficiently large. In other words, the above-described technology has problems that the apparatus must be large in size because the vertical stroke and the horizontal pull stroke must be increased, and that the burden on the operator in controlling vertical positioning is large.

[0005]

Means for Solving the Problems The present inventors have described the above,
In order to solve the above problems, the pan was removed from the ladle just by pulling it horizontally, and in order to solve the above problems, the whole device was mounted on a bogie, and the ladle was placed in the direction perpendicular to the axis. I thought of moving. Specifically, a traveling carriage that horizontally moves the pan lid detachable trolley in a direction perpendicular to the axis of the pan lid, and a locking metal fitting on the traveling trolley for retaining the pan lid. A horizontal pulling mechanism that pulls sideways in the same direction as the axis of the shaft, a lifting mechanism that raises and lowers the locking metal, a stopper release mechanism that is mounted on the traveling vehicle, and that releases a swing stopper,
A pin receiving member mounted on the traveling vehicle to keep the insertion pin horizontal.

[0006]

[Function] By moving the traveling cart, the mechanism relating to the attachment and detachment of the pot lid is exposed to the ladle, the swing stopper is opened by the stopper opening mechanism, and the pan lid is removed from the ladle by the lifting mechanism and the horizontal pulling mechanism. Remove.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a perspective view of a ladle and a pan lid according to the present invention.
Is a top open container for storing molten steel in which a refractory material 3 is lined with a steel bottomed cylindrical case 2, a pair of trunnion shafts 4, 4 (one not shown) protruding on the side, and a bracket on the upper side. 6, 6 and the pin receiving boxes 10, 10. The pot lid 30 is a lattice-shaped steel frame 31
, And a suspending device 32 for hanging a crane hook is provided at the center, and receiving pins 34... , A disc-shaped lid provided with a heat insulating material (not shown) on the bottom surface, and having insertion pins 40, 40 and shock absorbing mechanisms 50, 50 on the side surfaces.

In the drawing, reference numeral 36 denotes a heat-releasing lid, and 37 denotes an oval-shaped small lid. The heat-releasing lid 36 closes an opening that is opened to release heat inside the ladle 1 at the time of ladle repair. The small lid 37 is a lid for closing an opening opened for inserting a bubbling lance or a Ca-based wire during secondary refining. Although a detailed structure is omitted, the shock buffering mechanism 50 contains a spring for absorbing shock energy therein, and the pot lid 3
When 0 falls on the ladle 1, it serves to weaken its action.

FIG. 2 is an enlarged perspective view of the insertion pin and the pin receiving box according to the present invention. The insertion pin 40 is swingably attached to a sub-bracket 41 welded to the pot lid 30 via a support shaft 42. In the present embodiment, a vertically long box shape with open front and back is provided, and the vertically long opening portion is used as the stopper storage portion 43. The stopper accommodating portion 43 has a height sufficiently larger than the height of a swing stopper to be described later. The upper inner surface is a bridge 44 and the lower inner surface is a stop surface 45. Further, the insertion pin 40 is hung by a support shaft 42 and hangs down as shown in the figure unless an external force acts. 46 is a tip taper.

The pin receiving box 10 includes two side plates 11, 11
Guide surface 1 inside a box formed by
This is provided with a pin through hole 15 provided with 6, 6. Such a pin receiving box 10 is firmly attached to the cylindrical case 2 of the container, and a rectangular opening at the end of the pin through hole 15 can be seen from above.
Further, tapered weights 22, 22 (weights not shown in the figure are attached) are attached to both ends of a stopper shaft 21 that supports the swing stopper 20, indicating that the receiving plate 23 is attached to the weight 22 on the near side in the figure. . In the drawing, reference numeral 12a denotes an opening for inspection of the swing stopper 20.

FIGS. 3A and 3B are explanatory views showing the relationship between the insertion pin and the swing stopper according to the present invention (a ladle with a pan lid is 9).
FIG. 3A is a view showing a state of being tilted by 0 °, FIG. 3A is an overall view, and FIG. As shown in (a), the axis L of the ladle 1 is horizontal, and at this time, as shown in (b), the swing stopper 20 rotates clockwise about the stopper shaft 21 by its own weight, and the insertion pin 40 2 through the stopper storage portion 43 of FIG. In this state, the insertion pin 40 does not move.
Since 5 hits the swing stopper 20, further removal is prevented. That is, the pan cover 30 is locked to the ladle 1 so as to be freely openable and closable with the support shaft 42 as a hinge point by the insertion pin 40, the pin receiving box 10, and the swing stopper 20, and is held without falling off when swinging. I have. This will be described with reference to FIG.

FIGS. 4A and 4B are explanatory views showing the relationship between the insertion pin and the swing stopper according to the present invention.
The figure which shows the state which tilted 35 degrees, (a) is an overall view, (b)
Is an enlarged view of a main part). When the tilt angle exceeds 90 °, a pulling force acts on the insertion pin 40, and finally, the insertion pin 40 starts to slide out as shown by the arrow. The movement of the insertion pin 40 ends with the stop surface 45 abutting on the swing stopper 20. It is in this state at the time of slag discharge work.

FIG. 5 is a side view of the pot lid detachable cart according to the present invention. The pot lid detachable cart 60 is composed of a traveling cart 61 that moves horizontally in a direction perpendicular to the axis L of the pot lid 30 and a traveling cart 6.
1 and a horizontal pulling mechanism 63 (horizontal slider 63a, horizontal pulling cylinder 6) for pulling laterally the locking metal fittings 62 which lock the receiving pins 34 on the pot lid 30 side in the same direction as the axis L of the ladle.
3b and a rail 63c. ) And a lifting mechanism 65 (vertical slider 65a)
And an elevating cylinder 65b. ) And a stopper release mechanism 67 (cylinder 67)
a and a push rod 67b. ), And a pin receiving member 69 also mounted on the traveling vehicle 61 to keep the insertion pin 40 horizontal. In addition, 61a is a bogie main body, 61b is a traveling motor, 61c is an axle, 61d and 61.
d is a wheel, 61e and 61e are rails, and 61f is a bracket.

FIG. 6 is a perspective view showing a stopper opening mechanism and a pin receiving member according to the present invention. The stopper opening mechanism 67 is provided with a push rod 6 for reciprocating operation of a cylinder 67a.
7b is advanced and retracted, and the receiving plate 23 is forcibly pressed when moving forward. When the receiving plate 23 is pressed, the weights 22,
The swing stopper 20 can be made horizontal via the stopper shaft 22 and the stopper shaft 21. That is, by swinging the swing stopper 20 in the state shown in FIG.
This has the function of enabling the insertion pin 40 to be pulled out.

The pin receiving members 69, 69 are fork member-like receiving members extending horizontally from the bracket 61f of the traveling vehicle 61, and the pin receiving members 69, 69 are provided.
By depositing the insertion pin 40 into the
Is prevented from swinging downward about the support shaft 42.

The operation of the ladle-removing carriage described above will now be described. In FIG. 5, if it is necessary to remove the pot lid 30, the traveling carriage 61 is caused to travel in the front and rear directions of the drawing to face the ladle 1. FIG. 7 is an explanatory view (first half) of the operation of the ladle attaching / detaching truck according to the present invention. And raise the pot lid 30
Of receiving pins 34. The push rod 67b of the stopper opening mechanism 67 is also advanced.

FIG. 8 is an explanatory view (second half) of the operation of the ladle attaching / detaching truck of the present invention. The horizontal lid 63a is moved backward by the horizontal pulling cylinder 63b, so that the pan lid 30 is separated from the ladle 1. Thereafter, by moving the traveling cart 61 in the front and back direction of the drawing, the pot lid 30 can be removed from the front face of the opening of the pan 1. Since the pan 30 is only pulled out horizontally from the ladle 1, the stroke of the lifting cylinder 65b may be very small. Further, since the removed pot lid 30 can be quickly removed from the front of the opening of the ladle 1, the stroke of the horizontal pulling cylinder 63b may be very small. Cylinder 6
Since the size of 3b and 65b is reduced, the size of the movable carriage 61 can be reduced.

[0018]

According to the present invention, the following effects are exhibited by the above configuration. The detachable trolley of claim 1 is characterized in that, on a traveling trolley which moves horizontally in a direction perpendicular to the axis of the pan, a metal fitting for locking to the pan is laterally pulled in the same direction as the axis of the pan. Since the horizontal pulling mechanism and the lifting / lowering mechanism for raising and lowering the locking metal fitting are mounted, the pan lid can be quickly removed from the front of the ladle after the pan lid is removed from the ladle, and the horizontal pulling stroke can be reduced. In addition, since the traveling carriage is provided with a stopper opening mechanism for opening the swing stopper and a pin receiving member for keeping the insertion pin horizontal, the pot lid is pulled out horizontally, so that the lifting stroke can be reduced. Therefore, according to the present invention, the size of the device can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a ladle and a pan lid according to the present invention.

FIG. 2 is an enlarged perspective view of an insertion pin and a pin receiving box according to the present invention.

FIG. 3 is an explanatory view showing a relationship between the insertion pin and the swing stopper according to the present invention (a view showing a state in which a ladle with a pot lid is tilted by 90 °, (a) is an overall view, and (b) is an enlarged view of a main part).

FIG. 4 is an explanatory view showing the relationship between the insertion pin and the swing stopper according to the present invention (a view showing a state in which a ladle with a pot lid is tilted by 135 °, (a) is an overall view, and (b) is an enlarged view of a main part).

FIG. 5 is a side view of the pot lid detachable cart of the present invention.

FIG. 6 is a perspective view showing a stopper opening mechanism and a pin receiving member according to the present invention.

FIG. 7 is an explanatory view of the operation of the ladle detachable carriage of the present invention (first half).

FIG. 8 is an explanatory view of the operation of the ladle detachable cart of the present invention (second half).

[Explanation of symbols]

1 ... Ladle, 10 ... Pin receiving box, 20 ... Swing stopper, 2
DESCRIPTION OF SYMBOLS 3 ... Receiving plate, 30 ... Pot lid, 34 ... Receiving pin, 40 ... Insertion pin, 42 ... Support shaft, 60 ... Pot lid detachable trolley, 61 ... Traveling trolley, 62 ... Locking fitting, 63 ... Horizontal pulling mechanism, 65 ... Elevating mechanism, 67 ... Stopper opening mechanism, 67a ... Cylinder, 6
7b: push rod, 69: pin receiving member, L: shaft of ladle.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-206817 (JP, A) JP-A-3-111550 (JP, A) JP-A-1-241374 (JP, A) JP-A-59-1984 202160 (JP, A) JP-A-56-18167 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B22D 41/00

Claims (1)

(57) [Claims] 1. A pan lid detachable truck for detaching a pan lid from a ladle tilted so that an axis of the ladle is substantially horizontal, wherein a swingable insertion pin is inserted into a pin receiving box of the ladle. Then, in a pan lid detachable truck that detaches a pan lid that is locked to the ladle so that it can be opened and closed and detached by trying to prevent it from falling with a swing stopper, the pan lid detachable cart is positioned with respect to the axis of the pan lid. A traveling cart that moves horizontally in a right angle direction, a horizontal pulling mechanism that is mounted on the traveling cart, and that laterally pulls a locking bracket for locking to a pan lid in the same direction as the axis of the ladle; and the locking bracket. A horizontal ladle comprising a lifting mechanism for raising and lowering, a stopper opening mechanism mounted on the traveling trolley to release the swing stopper, and a pin receiving member mounted on the traveling trolley and keeping the insertion pin horizontal. Pot lid detachable trolley.