JPH08155630A - Carrier for fitting/removing ladle cover in ladle in sideward state - Google Patents

Abstract

PURPOSE: To quickly remote a ladle cover from the front surface of a ladle by fitting a side drawing mechanism side-drawing a restraining metallic tool restrained to the ladle cover in the same direction as the axial line of the ladle and an elevating mechanism for elevating the restraining metallic tool on a travelling carriage. CONSTITUTION: The travelling carriage 61 is travelled and faced to the ladle 1. The side-drawing mechanism 63 is worked and a horizontal slider 63a is advanced with a side-drawing cylinder 63a. The restraining metallic tool 62 is ascended with an elevating cylinder 65b and engaged with a receiving pin 34 of the ladle cover 30. The pushing rod 67b of a stopper opening mechanism 67 is advanced. The horizontal slider 63a is retreated to separate the ladle cover 30 from the ladle 1, and the travelling carriage 61 is shifted to remove the ladle cover 30 from the opening front surface of the ladle 1. Since the ladle cover 30 is only horizontally drawn out from the ladle 1, the stroke of the elevating cylinder 65b can be small. Further, since the ladle cover 30 can quickly be removed from the opening front surface of the ladle 1, the stroke of the side drawing cylinder 63b can be small and also, the travelling carriage 61 can be miniaturized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pan lid detachable truck for a horizontal ladle.

[0002]

2. Description of the Related Art A ladle for transporting molten steel has a steel case with a refractory material attached thereto. However, the refractory material is damaged as it is used, so it must be repaired regularly or appropriately. Generally, for convenience of work, the ladle is tilted 90 ° (hereinafter, this state is referred to as “sideways”), and the working direction is horizontal. On the other hand, there is a case where the ladle is covered with a pot lid for the purpose of preventing the temperature drop of the molten steel. At this time, it is necessary to remove the pot lid when repairing the ladle. As a technique therefor, for example, JP-A-59-202160. A gazette "a device for attaching and removing a ladle lid for a molten steel ladle" has been proposed.

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

[0004]

However, even the above technique has the following problems. Disengaging the pan lid from the ladle requires a significant lifting stroke. This is because if the ascending stroke is small, the meshed state cannot be released. Moreover, if the amount of ascent and descent is excessive, it will be in the engaged state again (2Aa is engaged with 1AX in FIG. 2 of the above publication), so that adjustment of the ascending and descending stroke is not easy. According to the embodiment the device is fixed to the foundation,
The device will block the front of the ladle opening, which is an obstacle.
In order to secure the space for inspection and repair work, it is necessary to make the lateral pull stroke sufficiently large. That is, the above-mentioned technique has a problem in that the lifting stroke and the lateral pulling stroke must be increased, so that the apparatus becomes large, and the burden on the operator for controlling the lifting positioning is heavy.

[0005]

Means for Solving the Problems The present inventors have
In order to solve the above problem, we improved so that it can be removed from the ladle simply by pulling the pan lid horizontally, and to solve the above problems, the entire device was mounted on a trolley, and it was placed in the direction perpendicular to the ladle axis. I thought about moving. Specifically, a pan for attaching and detaching the pan lid is moved horizontally to a direction perpendicular to the axis of the pan lid, and a locking metal fitting that is mounted on the pan for locking the pan lid. A horizontal pulling mechanism for pulling laterally in the same direction as the axis line, and an elevating mechanism for raising and lowering the locking metal fittings; and a stopper opening mechanism equipped on the traveling carriage for opening the swing stopper.
And a pin receiving member which is mounted on the traveling carriage and keeps the insertion pin horizontal.

[0006]

[Operation] By moving the traveling carriage, the ladle lid attachment / detachment mechanism is exposed to the ladle, the swing stopper is opened by the stopper opening mechanism, and the pot lid is removed from the ladle by the elevating mechanism and the horizontal pulling mechanism. Remove.

[0007]

Embodiments 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 in a steel bottomed cylindrical case 2, a pair of trunnion shafts 4, 4 (one not shown) is projected on the side surface, and a bracket is provided on the upper side surface. 6, 6 and pin receiving boxes 10, 10. The pan lid 30 is a grid-shaped steel frame 31.
Is provided with a suspender 32 for hanging a crane hook in the center, and receiving pins 34 ... (... indicates a plurality, the same applies hereinafter) arranged at the apex of an inverted triangle centering on the suspender 32. A disk-shaped lid having a heat insulating material (not shown) on the bottom surface, and insertion pins 40, 40 and shock absorbing mechanisms 50, 50 on the side surfaces.

In the figure, 36 is a heat-releasing lid, 37 is an oval-shaped small lid, and the heat-releasing lid 36 is a lid that closes an opening that is opened to release the heat inside the ladle 1 when repairing the ladle. The small lid 37 is a lid that closes an opening opened for inserting a bubbling lance or a Ca-based wire at the time of secondary refining. Although the detailed structure is omitted, the shock absorbing mechanism 50 has a spring which absorbs shock energy inside, and the pan 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 the sub-bracket 41 welded to the pan lid 30 via the support shaft 42. In the present embodiment, a vertically long box shape with the front and rear opened is used, and the vertically long opening portion is used as the stopper accommodating portion 43. The stopper accommodating portion 43 has a height dimension sufficiently larger than a height dimension of a swing stopper described later, and has an upper inner surface as a bridge 44 and a lower inner surface as a stop surface 45. Further, the insertion pin 40 is suspended by the 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 and 11.
The guide surface 1 is provided inside the box formed by the front plate 12 and the front plate 12.
The pin through hole 15 having the holes 6 and 16 is provided. 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.
Then, rice ball-shaped weights 22 and 22 (weights in the back of the drawing are not shown) are attached to both ends of the stopper shaft 21 which supports the swing stopper 20, and it is shown that the receiving plate 23 is attached to the weight 22 in the front of the drawing. . In the figure, 12a is an inspection opening of the swing stopper 20.

3 (a) and 3 (b) are explanatory views showing the relationship between the insertion pin and the swing stopper of the present invention (a ladle with a pan lid is 9
It is a diagram showing a state of tilting by 0 °, (a) is an overall view, and (b) is an enlarged view of a main part). As shown in (a), the axis line L of the ladle 1 is horizontal, and at this time, as shown in (b), the swing stopper 20 rotates clockwise around the stopper shaft 21 by its own weight and the insertion pin 40. It shows that the stopper housing part 43 of FIG. In this state, the insertion pin 40 does not move, but even if it moves to the exit side, the stop surface 4
Since 5 comes into contact with the rocking stopper 20, further slipping out is prevented. That is, the pan focus 30 is locked by the insertion focus 40, the pin receiving box 10, and the swing stopper 20 to the ladle 1 so as to be openable and closable with the support shaft 42 as a hinge point, and is held without falling off during swinging. There is. This point will be described with reference to the next figure.

4 (a) and 4 (b) are explanatory views showing the relationship between the insertion pin and the swing stopper according to the present invention (the ladle with the pan lid is 1
Figure showing a state of tilting 35 °, (a) is the overall view, (b)
Is an enlarged view of a main part), and when the tilt angle exceeds 90 °, a pulling force acts on the insertion pin 40, and finally slides out as shown by an arrow. The movement of the insertion pin 40 ends when the stop surface 45 contacts the swing stopper 20. This is the state at the time of slag discharge work.

FIG. 5 is a side view of the pan lid attaching / detaching truck of the present invention. The pot lid attaching / detaching truck 60 is a traveling truck 61 which moves horizontally in a direction perpendicular to the axis L of the pot lid 30, and this traveling truck 6
1. A horizontal pulling mechanism 63 (horizontal slider 63a, horizontal pulling cylinder 6) that horizontally pulls the locking metal fittings 62 ...
3b and rail 63c. ) And lifting mechanism 65 (vertical slider 65a) for lifting and lowering the locking fittings 62 ...
And an elevating cylinder 65b. ) And a stopper opening mechanism 67 (cylinder 67) equipped on the traveling carriage 61.
a and a push rod 67b. ) And a pin receiving member 69 which is also mounted on the traveling carriage 61 and keeps the insertion pin 40 horizontal. In addition, 61a is a trolley body, 61b is a traveling motor, 61c is an axle, 61d, 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 used for reciprocating the cylinder 67a so as to push the push rod 6.
7b is moved forward and backward, and the receiving plate 23 is forcibly pushed during forward movement. When the backing plate 23 is pushed, the weight 22,
The swing stopper 20 can be made horizontal via 22 and the stopper shaft 21. That is, by swinging the swing stopper 20 in the state shown in FIG.
The insertion pin 40 has a function of allowing it to be pulled out.

The pin receiving members 69, 69 are fork member-shaped receiving members extending horizontally from the bracket 61f of the traveling carriage 61. The pin receiving members 69, 69
By inserting the insertion pin 40 into the
Is prevented from swinging downward around the support shaft 42.

The operation of the ladle mounting and demounting truck described above will be described below. In FIG. 5, if it is necessary to remove the pan lid 30, the traveling carriage 61 is moved in the front and back direction of the drawing to face the ladle 1. FIG. 7 is an explanatory view (first half) of the operation of the ladle attachment / detachment truck of the present invention, in which the horizontal slider 63a is advanced by the horizontal pulling cylinder 63b, and then the locking metal fittings 62 ... Raise to 30 and pan lid 30
Engage with the receiving pins 34 ... The push rod 67b of the stopper opening mechanism 67 is also moved forward.

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 retracted by the horizontal pulling cylinder 63b to separate the pot lid 30 from the ladle 1. After that, by moving the traveling carriage 61 in the front-back direction of the drawing, the pan lid 30 can be removed from the front surface 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 pan lid 30 can be quickly removed from the opening front surface of the ladle 1, the stroke of the horizontal pulling cylinder 63b may be very small. Cylinder 6
Since 3b and 65b are small, the mobile carriage 61 can be made small.

[0018]

The present invention has the following effects due to the above configuration. The pan lid detachable trolley according to claim 1 is a traveling cart that moves horizontally in a direction perpendicular to the axis line of the pan lid, and a locking metal fitting for locking the pan lid is pulled horizontally in the same direction as the axis line of the pan. Since the horizontal pulling mechanism and the elevating 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. Further, since the traveling carriage is equipped with a stopper opening mechanism for opening the swing stopper and a pin receiving member for keeping the insertion pin horizontal, the pan lid is pulled out horizontally, so that the lifting stroke can be shortened. Therefore, according to the present invention, the device can be downsized.

[Brief description of 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 the insertion pin and the pin receiving box according to the present invention.

FIG. 3 is an explanatory view showing the relationship between the insertion pin and the swing stopper of the present invention (a view showing a state in which a ladle with a pan 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 pan lid is tilted 135 °, (a) is an overall view, and (b) is an enlarged view of a main part).

FIG. 5 is a side view of the pan lid detachable truck 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 attachment / detachment truck of the present invention (first half)

FIG. 8 is an explanatory view of the operation of the ladle attaching / detaching truck of the present invention (second half)

[Explanation of symbols]

1 ... ladle, 10 ... pin receiving box, 20 ... swing stopper, 2
3 ... Receiving plate, 30 ... Pan lid, 34 ... Receiving pin, 40 ... Inserting pin, 42 ... Spindle, 60 ... Pan lid detaching trolley, 61 ... Traveling trolley, 62 ... Locking metal fitting, 63 ... Horizontal pulling mechanism, 65 ... Lifting mechanism, 67 ... Stopper opening mechanism, 67a ... Cylinder, 6
7b ... push rod, 69 ... pin receiving member, L ... ladle shaft.

Claims (1)

[Claims] 1. A ladle lid attachment / detachment for attaching / detaching a ladle lid to / from a ladle that is tilted so that the axis line of the ladle is substantially horizontal. A swingable insertion pin is inserted into a pin receiving box of the ladle. However, in the pan lid detachable dolly that detaches the pan lid that is locked to the ladle so that it can be opened and closed and detached by using the swing stopper to prevent it from falling, this pan lid detachable dolly is attached to the axis line of the pan lid. A traveling carriage that moves horizontally at a right angle, and a horizontal pulling mechanism that horizontally pulls a locking metal fitting that is mounted on the traveling carriage to lock the pan lid in the same direction as the axis of the pan and the locking metal fitting. A horizontal ladle characterized by comprising an elevating mechanism for elevating and lowering, a stopper opening mechanism equipped on a traveling carriage to open the swing stopper, and a pin receiving member mounted on the traveling carriage for keeping the insertion pin horizontal. A pan lid detachable dolly.