JP3580274B2 - Frame changing device for variable thickness mold for continuous casting - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a frame exchange device for a variable thickness mold for continuous casting, and more particularly, to a frame exchange device for a variable thickness mold for continuous casting, which includes an exchange cart capable of lifting and running the frame when the frame is exchanged.
[0002]
[Prior art]
Conventionally, when exchanging a short side frame (hereinafter, simply referred to as a short side) of an assembling mold in a continuous casting facility, a mold in which a short side having a predetermined dimension is incorporated is prepared in advance at a mold maintenance shop, and the entire mold is prepared. It was necessary to replace them all at once, which required a lot of replacement work time.
[0003]
As an improvement on this point, for example, JP-A-2000-197949 has a function of lifting a short side, a function of traveling to a short-side holder in a suspended state, and a function of positioning a short side. There has been proposed a mold short side exchanging device capable of being detached and attached.
[0004]
More specifically, as shown in FIG. 1 (front view) and FIG. 2 (plan view), the mold short side exchanging device includes a pair of engaging means 32 capable of engaging with the suspending portion 27 of the short side 12, A lifting means 33 capable of moving up and down the short side 12 in a state where the means 32 is hung on the hanging portion 27; and a mold fixing frame 15 and a short side stand 31 in a state in which the short side 12 is hung by the hanging means 32 and the lifting means 33. (See FIG. 2).
[0005]
The exchange trolley 34 includes wheels 37 and 37 ′ that roll on rails 36 attached to a girder 35 horizontally arranged at a predetermined interval above the factory building, and the wheels 37 and 37 ′. And a bogie main body 38 to which is attached. The drive-side wheel 37 ′ is driven by a motor 39 with a speed reducer provided at the drive-side end of the carriage body 38, and the exchange carriage 34 can reciprocate between the mold 10 and the short side holder 31. .
[0006]
The elevating means 33 drives the hoist drums 40 attached to both ends of the bogie main body 38 at predetermined intervals with a motor 42 with a speed reducer via a synchronous shaft 41. The winding drum 40 is driven by a winding motor 42. The distal end of the wire 43 wound around the hoist drum 40 is fixed on an elevating frame 45 via a sheave 44, and the elevating frame 45 can be moved up and down by rotation of a motor 42 with a speed reducer.
[0007]
A rod-shaped guide post 46 is attached to both ends of the upper surface of the lifting frame 45 to prevent the vertical movement of the lifting frame 45 at the time of lifting and lowering, and a hollow guide 47 for guiding the guide post 46 is provided on the bogie main body 38. Fixed.
[0008]
The lifting frame 45 is provided with a pair of pressing / positioning means 49 capable of simultaneously pressing the short side copper plate 48 which is the inner surface of the engaging means 32 and the short side 12 facing each other and positioning the short side 12.
[0009]
In the drawing, 13 is a short side support member, 29 is a hanging pin, 56 is a sliding cylinder, 57 is a pressing / positioning member of the pressing / positioning group 49, 60 is a engaging cylinder of the engaging means 32, and 62 is a hook. is there.
[0010]
[Problems to be solved by the invention]
However, not only is the rail 36 dedicated to the exchange trolley 34 capable of running by lifting the short side 12 provided on the girder 35, but the exchange trolley 34 is provided with the traveling motor 39, and the configuration becomes complicated. Not only do they consume power for driving. In particular, when the present invention is applied to a continuous casting facility of a plurality of strands provided with a plurality of molds, it is necessary to provide an exchange cart for each strand, and one exchange cart exchanges the short sides of the molds of a plurality of strands. Can not. Further, if the short side of the mold has a double structure in which the outer short side supporting member 13 is fixed, positioning of the short side by the method described in JP-A-2000-197948 is also possible. In the structure, when the short side is attached or detached by the cylinder pin portion, there is a problem that the degree of freedom is lost, positioning becomes difficult, and replacement becomes difficult.
[0011]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described conventional problems, and has as its first object to make it possible to run an exchange bogie without providing a dedicated rail or drive mechanism.
[0012]
A second object of the present invention is to make it possible to easily exchange frames.
[0013]
[Means for Solving the Problems]
The present invention provides a frame exchange device for a variable thickness mold for continuous casting comprising an exchange carriage capable of lifting and running the frame during frame exchange, wherein the exchange carriage travels on a tundish car rail. This is to solve the first problem.
[0014]
Further, the first problem is solved by enabling the exchange cart to be connected to a tundish car and moving with the movement of the tundish car.
[0015]
Further, the second problem has been solved by providing a frame lifting portion of the exchange cart more than the number of strands so that a used frame can be lifted.
[0016]
Further, the position of the frame lifting portion of the exchange cart can be finely adjusted in the width direction and the thickness direction of the mold to solve the second problem similarly.
[0017]
In addition, a stable running is made possible by providing a steadying stopper for preventing the frame from running while the exchange cart is running.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention applied to a two-strand continuous caster will be described in detail with reference to the drawings.
[0019]
In this embodiment, as shown in FIG. 3 (front view) and FIG. 4 (side view along the line IV-IV in FIG. 1), the exchange truck 80 is connected to the end of the tundish (T / D) car 70 by a coupler. With the movement of the tundish car 70, the exchange cart 80 travels on the tundish car rail 72 by the wheels 81, and moves to the position of the mold 10 of each strand as shown in FIG. Like that.
[0020]
As shown in FIG. 4, the frame 84 of the exchange carriage 20 is provided with a lifting frame 92 that can be moved up and down along a lifting guide post 90 by a jack 88 with a motor 89 (see FIG. 7). Three (92a, 92b, 92c) are provided, one more than two (two in the embodiment), and two of them (92b, 92c) suspend the short side 12 according to the number of strands. The other one (92a) is for lifting the short side after use.
[0021]
Each of the elevating frames 92a, 92b, 92c is installed on the traveling frame 86 so as to be movable in the mold thickness direction (the left-right direction in FIG. 4).
[0022]
Each of the lifting frames 92a, 92b, and 92c is provided with a width-direction adjusting handle 96 for finely adjusting the position of the short side 12 of the mold in the width direction (the left-right direction in FIG. 1).
[0023]
The exchange carriage frame 84 further includes an easily detachable anti-sway stopper for preventing the short side 12 suspended from the lifting frame 92 by the wire 94 from swinging sideways while the exchange carriage 80 is running. 98 are provided.
[0024]
Hereinafter, the procedure of the short side exchange will be described with reference to FIG.
[0025]
First, the long side 14 of the mold 10 is opened in the direction of arrow A in FIG. 4 (step 100).
[0026]
Next, the tundish car 70 is moved to move the exchange trolley 80 onto one of the strands, for example, the first strand (step 102).
[0027]
Next, the old short side is removed in the order of B to D shown in FIG. 7 by using the empty elevating frame 92a shown in FIG. 4 (step 104). Specifically, first, a hanging wire 94 is attached to the upper end of the short side 12, and is slightly lifted upward as shown by an arrow B, and then is retreated by a width direction adjusting handle 96 as shown by an arrow C. The short side 12 is completely lifted as shown in FIG.
[0028]
Next, the lifting frame 92b with the new short side to be attached suspended is moved above the mold 10 as shown in FIG. 4, and the short side 12 is set in the order of E to G shown in FIG. 8 (step 106). Specifically, as shown by an arrow E, the short side 12 is suspended to approximately the same height as the mold 10 by an elevating frame 92b, and then, as shown by an arrow F, the width direction position is adjusted by a width direction adjustment handle 96. Then, as shown by an arrow G, it is suspended to a predetermined position by the lifting frame 92b.
[0029]
Next, the tundish car 70 is moved to move the exchange carriage 80 onto the other strand, for example, the second strand shown in FIG. 5 (step 108).
[0030]
Here, since the elevating frame 92b is in a state in which nothing is hung, the short side 12 is removed in the order of arrows B → C → D shown in FIG. 7 (step 110).
[0031]
Next, the lifting frame 92C of FIG. 4 is moved to the position of the mold 10 by the traveling frame 86, and the short sides 12 are set in the order of arrows E → F → G of FIG. 8 (step 112).
[0032]
Next, the long side 14 is narrowed in a direction opposite to the arrow A shown in FIG. 3 and tightened (step 114).
[0033]
Finally, the exchange cart 20 is evacuated by the movement of the tundish car 10 (step 116).
[0034]
The replacement of the old short side and the new short side on the exchange trolley 80 can be performed, for example, by suspending the exchange trolley 80 with a crane to an off-line remote position.
[0035]
In the above description, the number of strands is two, and the short side is exchanged from the first strand. However, the number of strands and the exchange order are not limited to this, and only one strand or three strands are exchanged. It may be above.
[0036]
In this embodiment, since the exchange cart 80 can be connected to the tundish car 70, a separate drive unit is not required. In addition, it is also possible to provide a dedicated driving means or to manually push.
[0037]
Further, in the present embodiment, since the number of the elevating frames 92 is larger than the number of the strands, the short sides 12 can be easily exchanged. Note that the number of elevating frames may be the same as or less than the number of strands, as long as the replacement is not troublesome.
[0038]
Further, in the present embodiment, the position of the lifting frame 92 can be finely adjusted in the width direction and the thickness direction of the mold, so that it can be easily installed at an accurate position.
[0039]
Further, in the present embodiment, since the exchange carriage 80 is provided with the steady rest stopper 98 on the short side during running to prevent the run-out of the twelve, the short side swings during running and collides with another member. It is possible to run stably without getting tired.
[0040]
In the above embodiment, the short side is lifted, but the lifting target is not limited to this, and for example, the long side may be exchangeable.
[0041]
【The invention's effect】
According to the present invention, since it is not necessary to provide a rail or a traveling mechanism dedicated to the exchange truck, the traveling equipment and the exchange truck can be configured at low cost (the exchange truck is about 1/5 of the conventional one), and the power consumption during traveling is also reduced. Can be reduced.
[0042]
In particular, in the case where the same number of frames as the number of strands can be hung, it is possible to easily replace the mold frame, which has been conventionally difficult with a multiple strand continuous casting machine.
[0043]
In addition, the exchange cart is provided with a function that can lift and hang the frame, and the lifting and hanging part is provided with a sliding mechanism for fine adjustment of the position in the mold width direction and thickness direction. Can be exchanged.
[Brief description of the drawings]
FIG. 1 is a front view showing a mold short side exchanging apparatus described in Japanese Patent Application Laid-Open No. 2000-197948. FIG. 2 is a plan view of the same. FIG. 3 is a front view of an embodiment of an exchange bogie according to the present invention. 3 is a side view taken along the line IV-IV of FIG. 5; FIG. 5 is a front view showing each strand and the exchange trolley in the embodiment; FIG. 6 is a flowchart showing a procedure for exchanging short sides in the embodiment of the invention; FIG. 8 is a front view showing a state in which the short side is removed from the mold. FIG. 8 is a front view showing a state in which the short side is installed in the mold.
10 mold 12 short side (frame)
14 long side (frame)
70 Tundish (T / D) car 72 T / D car rail 80 Exchange cart 82 Linkage 84 Frame 86 Running frame 92, 92a, 92b, 92c Elevating frame 96 Width-adjustment handle 98 Run-out Stop stopper

Claims (5)

At the time of frame exchange, in a frame exchange device of a variable thickness mold for continuous casting provided with an exchange carriage capable of lifting and running the frame,
A frame exchange device for a variable thickness mold for continuous casting, characterized in that the exchange cart runs on a tundish car rail. 2. The frame exchange device for a variable thickness mold for continuous casting according to claim 1, wherein the exchange cart is connectable to a tundish car, and is adapted to move with the movement of the tundish car. 3. 3. The frame exchange device for a variable thickness mold for continuous casting according to claim 1, wherein the frame lifting portion of the exchange cart is provided in a number larger than the number of strands. 4. The frame of the variable thickness mold for continuous casting according to any one of claims 1 to 3, wherein the position of the frame lifting portion of the exchange cart can be finely adjusted in the width direction and the thickness direction of the mold. Exchange equipment. 5. The frame changing device for a variable thickness mold for continuous casting according to claim 1, wherein the exchange trolley is provided with a steady rest stopper for preventing the frame from swaying during traveling. 6. .

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