JPS61159260A - Molten metal discharging device - Google Patents

Abstract

PURPOSE:To improve the positioning accuracy of a sliding plate body by providing a sliding plate frame body contg. a sliding plate provided with miter slopes and disposing wedge-shaped retaining members and power transmitting members to the recess thereof. CONSTITUTION:The frame body 20 for contg. the sliding plate body 18 is provided and the miter parts 16, 17 are formed to the body 18. The recess 19 of the body 20 has miter slopes 29, 30 and is formed in such a manner that said slopes can contact tightly with the slopes 41, 42 of the body 18. The wedge- shaped retaining metals 43, 44 are further provided in the recess 19 of the body 20 and a bolt 65 for tightening and a bar metal 51 are disposed. The metal 51 presses the metals 43, 44 and the exact positioning is made possible by the slopes 29, 30 of the body 18 and the slopes 41, 42 of the recess 19 when the bolt 65 is tightened by such mechanism. The positioning accuracy of the body 18 is thus improved.

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a molten metal discharge device for controlling the discharge of molten metal such as molten steel from a molten metal storage container such as a ladle or tundish. , a fixed plate configured to be attached to the bottom of the molten metal storage container and having a hole for allowing the discharge of molten metal; and a sliding plate having an upper surface pressed against the lower surface of the fixed plate so as to be able to be dynamically displaced. A fixed motion board body made of a refractory material having corner recesses formed diagonally with respect to the one end on both sides, and a metal regular motion board frame having a recess configured to accommodate the main body. Then, in order to removably fix the sliding plate main body within the recess of the frame, the end of the sliding plate main body on the side opposite to the one end is brought into contact with the side wall of the recess of the frame. J: This relates to a type of molten metal discharging device comprising a pressing/fixing mechanism that presses a pair of corner recessed portions of a sliding plate main body toward the opposing end portions.

[Prior Art] In the conventional molten metal discharging device of the type described above, a pressing/fixing device 1 is used to removably fix the sliding plate body made of refractory to the sliding plate frame made of metal. 4 is a pair of wedge-shaped pressers disposed between each corner drop and the adjacent side wall of the recess to press the pair of corner drops of the slide plate main body toward the opposite end of the main body; Then, by pressing each of the rear surfaces of this presser foot with the tip, the corresponding corner drop portion of the slide plate main body is pressed by the presser foot, and the opposite end side of the slide plate main body is pressed against the side wall of the recess of the frame. It consists of a pair of tightening holes 1 to 2 screwed into the side wall of the frame at the one end side for pressing.

In this conventional molten metal discharging device, when the sliding plate main body is fixed to the sliding plate frame, a pair of tightening bolts are used.

[Problems to be Solved by the Invention] There is a risk that the recess may be fixed to the frame at a position shifted from a predetermined position within the recess. If the slide plate main body is not properly fixed, there is a possibility that accurate discharge control of molten metal by the slide plate may be difficult to perform.

In addition, a U-shaped rigid presser metal fitting was used, and the two ends of the U-shape were used to press both sides of one end of the slide plate main body in the sliding direction of the slide plate. A pressing/fixing mechanism has also been proposed (see Japanese Unexamined Patent Publication No. 115607/1983).

However, in this proposed pressing/fixing machine] 711, since the presser metal fitting is made of one "U"-shaped integral rigid object, the 1 movement board main body is located in the recess of the sliding board frame. There is a risk that it will not be fixed in place.

The present invention has been developed in view of the above-mentioned points, and an object thereof is to easily and reliably fix a movement board main body part in a predetermined position in a recessed part of a sliding board frame in a well-balanced manner. An object of the present invention is to provide a molten metal discharge device.

[Means for solving the problem] According to the present invention, the object is that the pressing/fixing mechanism:
A pair of wedge-shaped holding parts are provided between each corner part and the adjacent side wall of the recess to press the pair of corner parts of the slide plate main body toward the opposite ends; The presser part is disposed in the recess so as to press each presser member at both ends in the pressing direction, with the presser mold part movable in a direction crossing the pressing direction of the slide plate main body by Δ. a force transmitting member, and a tightening mechanism installed between the force transmitting portion (A and the frame body) to press the force transmitting portion in the pressing direction. This is accomplished using a metal ejector.

[Operations and Effects] While being applied to a pair of wedge-shaped pressing members arranged between each corner drop part and the four adjacent side walls in order to press the part side,
A force transmitting member disposed within the recess so as to press each presser member at both ends in the pressing direction; and a force transmitting member disposed between the force transmitting member and the frame to press the force transmitting member in the pressing direction. When tightening by the tightening mechanism, the pressing force applied from the tightening mechanism to the force transmitting member is transmitted through the pair of pressing members in a well-balanced manner to the pair of sliding plate main bodies. The enclosure Q8 body can be easily and reliably fixed in a well-balanced position in a predetermined position of the sliding plate frame.

[Embodiment] Next, a molten metal discharge device according to a preferred embodiment of the present invention will be described based on FIGS. 1 to 4.

In FIG. 3, reference numeral 1 denotes a bottom wall of a molten steel tundish 2 serving as a molten metal storage container, and the bottom wall 1 consists of a bottom block 3 made of refractory material and a bottom plate 4 made of metal such as steel. An upper nozzle 5 made of refractory material is further disposed on the bottom wall 1 to allow discharge of molten steel from the tundish 2.

6 is slide goo 1 to device 7 as a molten metal discharge device
This is a base housing that allows for attachment to the tandish 2. A base housing 6 made of metal such as steel is removably fixed to the metal bottom plate 4 of the tundish 2 with bolts or the like. A fixed platen 10 made of refractory is removably fixed to the base housing 6 using tools or mortar cement so that the molten steel passing hole 8 is aligned with the hole 9 of the upper nozzle 5. ing.

11 is constructed 114 so that it can be displaced in directions A and B in FIG. 4 (direction perpendicular to the plane of the paper in FIG. 3) with respect to the fixed i1Q with the upper surface 12 in sliding contact with the lower surface 13 of the fixed platen 10. It is the first movement plate. As can be seen from FIGS. 1 to 4, this one training board 11 is configured so that its upper surface 12 is pressed against the lower surface 13 of the fixed 110, and the one end 14 has both sides attached to the one end surface 15. Diagonally formed corner part 16.17
(made of refractory material) having a gate plate main body part 18, and the main body part 1
A slide plate frame body 20 made of metal such as steel and having four parts 19 configured to house a slide plate body 18, and a slide plate body 18 to be detachably fixed to the frame body 20. The end portion 21 of the portion 18 on the side opposite to the one end 14 is located in the recessed portion 19 of the frame body 20.
The sliding plate main body 1 is arranged so as to be brought into contact with the side wall 22 of the
8 to the opposite end 21 side.
It consists of pressing/fixing 11 = M'tM23 for pressing in the direction.

One movement plate frame 20 made of metal such as steel has a rectangular plate shape that is long in one movement direction A and B of the sliding plate 11, and the recess 19 also has a similar shape to the outer shape of the frame 20. are doing. In addition, the recess 19
The frame body 20 may have a polygonal shape, an elliptical shape, etc. instead of a rectangular shape.

A hole 26 is formed in the bottom wall 24 of the recess 19 to receive the submerged nozzle connection part 25 of the slide plate main body 18, and a hole 26 for receiving the submerged nozzle connection part 25 of the slide plate main body 18 is formed in the bottom wall 24 of the recess 19. The side wall portions 29.30 facing the both side portions 27.28 are recessed portions 1.
It extends obliquely to side walls 31.32 corresponding to the long sides and side walls 33.34 corresponding to the short sides of the rectangle 9.

Reference numeral 35 denotes a rear part of a drive displacement mechanism (not shown) for displacing the sliding plate 11 in directions A and B via the frame 20 in order to control discharge of molten steel.

The slide plate main body 18 made of refractory is plate-shaped, except that the submerged nozzle connection part 25 having a molten steel passage hole 36 is discharged downward, and the recess 19 is 8°, and the two long sides 37 are similar to each other. , 38
and has a rectangular shape with two short sides of 39.40.

Both sides 27.28 have beveled surfaces 41.42 configured to be brought into close contact with the walls 29.30.

The pressing/fixing mechanism 23 includes a pair of wedge-shaped presser feet 43 of the slide plate main body 18 and another wedge-shaped presser foot disposed between the horn portion 17 and the long side wall 32 of the recess 19. It has 44.

A presser foot 43 placed in the recess 19. /+4 receives pressing force at one end surface 45 and 46 in the standing state.
Recess 1 on the side 47.48 which is perpendicular to the end face 45.46
9, the wedge-shaped inclined surface 49.
50, it is configured to be able to contact the corner recesses 16, 17 of the slide plate main body 18. The wedge-shaped presser foot 43,44 preferably has a shape that is mirror symmetrical as shown in FIG.

Reference numeral 51 denotes a bar hardware as the force transmitting portion 4A, and the bar hardware 51 in the shape of a rectangular prism holds the presser hardware 4 with protrusions 56.57 formed on one side 54.55 of each end 52.53.
3, recess 58.5 formed in one end surface 45.46 of 44
9, and the projections 56 and 57 and the recess 5B.
, the presser foot 43. through the loose fit connection number 60.61 with the 59-karat gold. /I
,! 1 is pressed in the B direction. In addition, presser foot 43.4
．． 4 can be adjusted or displaced in the F direction (direction perpendicular to the B direction) with respect to the bar hardware 51, the presser foot 43.
A protrusion may be formed on the end faces 45 and 46 of the metal bar 51, and a recess into which the protrusion is loosely fitted may be formed on the side portions 54 and 55 of the bar hardware 51. Note that the end surface 45.46 of the presser foot 1'13.44 may be flat, convex, or concave, and the side portion 54.55 to be brought into contact with the end surface 45.46 may be flat, concave, or convex.

The pressing/fixing mechanism 23 further includes a thick center 65 of the bar hardware 51.
have.

Instead of consisting of the tightening bolt 65 and the bolt hole 64, the tightening mechanism may be any mechanism that presses the center part 62 of the bar hardware 51 in the direction B. It may also consist of a kotta pin for fixing things.

66 is a cover housing for supporting the sliding plate 11 at a predetermined position with respect to the fixed plate 10, and the cover housing 66 made of metal such as steel is attached to one side of the base housing 6 via a pin 67 on one side. It is rotatably connected in the C and D directions, and is rotatably attached to the base housing 6 with pins 68 and 69.
．． It can be attached via 73 etc. Bolt 70.71
The cover housing 66, which is pressed upward by nuts 72 and 73, supports the sliding plate 11 so as to be movable in directions A and B via a pair of sliding mechanisms 74 and 75.

When assembling, inspecting, replacing, etc. the sliding plate 11 in the molten metal discharging device 7 configured as described above, for example, the following steps are performed. Place it on the floor or other surface. When tightening, leave bolt 65 loose.

Next, the sliding plate main body 18 made of refractory material is placed in the recess 19 so that the nozzle connection part 25 is located in the hole 26 of the recess 19 of the frame 20.

Then, the presser foot 43 is disposed in the recess 19 such that the slope 49 faces the corner recess 16 of the main body 18 ('), and the side surface 47 faces ≦' the long side wall 31 of the recess 19, A presser foot 44 is disposed in the recess 19 so that the slope 50 or the corner recess 17 of the main body 18 faces ~', and the side surface 48 or the long shelf side wall 32 of the recess 19 faces ~'.

Next, the bar hardware 51 is attached to the frame 20 so that the protrusion 56 is fitted into the recess 58 of the end surface 45 of the presser foot 43 and the protrusion 57 is fitted into the recess 59 of the end surface 46 of the presser foot 44.
It is arranged in the recess 19 of.

Then, the tightening bolt 65 is tightened and the tip 76 of the bolt 65 presses the center portion 62 of the bar hardware 51 in the direction B.

At this time, the wedge-shaped presser foot 43.44 is simultaneously pressed down by the projections 56° 57 on both end sides 54.55 of the bar metal fitting 51
The slope 49.50 of the presser foot 43.44 is pressed in the direction
The corner drop portions 16 and 17 of the one-wheel drive main body portion 18 that are in contact with are pressed at the same time, and the slide plate main body portion 1B can be actually pressed in the direction B.

In this pressing/fixing machine 4f423, the presser foot 4
3. The protrusion 56.57 of the bar hardware 51 is loosely fitted into the recess 58.59 of /14, and the presser hardware '13.44
can be displaced in the short side direction of the rectangle (direction perpendicular to direction B) with respect to the bar hardware 51, so the presser foot 43.4/
l can press the corner drop 18.17 with the slope 49.degree. 50 with each side surface /17.48 in contact with the long side wall 31.32.

Therefore, if the long side of the slide plate main body 18 is oriented in a direction slightly shifted from the direction B, the main body 18 is placed in the recess 19.
Even when the movable platen main body 18 is placed inside, the movable platen main body 18 may be slightly rotated due to the force applied to the corner recesses 16, 17 of the movable platen main body 18 by the presser foot 43 and the presser foot 44. The slide plate main body 18 is fixed to the frame 16 with the long side direction of the main body 18 aligned with the direction B.

In other words, in this sliding plate 11, the main body part 18 can be fixed in a well-balanced manner without a frame.

A case where the slide gate device 7 as a molten metal discharging device according to a preferred embodiment of the present invention constructed as described above is used for continuous casting of molten steel from the tundish 2 will be described.

Note that 77 is a submerged nozzle fixed to the sliding plate 11 via mortar cement or a suitable attachment mechanism.

When pouring molten steel into the tundish 2, the driving displacement means (
(not shown), the sliding plate frame 20 is displaced by a predetermined length or a predetermined distance in six directions with respect to the fixed plate 10 via the mounting portion 35, and is fixed at a predetermined position on the sliding plate frame 20. The hole 8 of the fixed platen 10 is closed on the upper surface of the sliding plate main body part 18.

When discharging molten steel from the tundish 2, the mounting part 35
The sliding plate frame 20 is displaced by a predetermined length or a predetermined distance in the B direction with respect to the fixed plate 10 by a driving displacement means (not shown) attached to the slide plate fixed at a predetermined position of the frame 20. The hole 36 of the movable platen body 18 and the hole 8 of the stationary platen 10 are communicated with each other by an opening lower 8 having an appropriately controlled size.
The molten steel is sent to the mold through the hole 36 and the hole 79 of the nozzle 77 at a flow rate and flow rate determined by the size of the molten steel.

In the molten metal discharge device of the present invention, a method for fixing the fixed platen 10 to the bottom wall of the tundish, and a method for fixing the fixed platen 10 to the sliding platen 11.
The pressure contact, support method, etc. may be different from that shown in FIG.

For example, in order to support the learning board 11, the base housing is fixed to the bottom hardware 4 of the tundish 2, and the cover housing is detachable.

The cover housing is slidably supported in the direction B, and the frame 20 of the sliding plate 11 is supported elastically in a transparent manner by the cover housing, so that the rotating plate main body 18 is pressed against the fixed plate 10. It's okay.

This fixing method is based on the fixed plate 10 in Figure 3.
It can also be used for installing the lower fixed plate in a three-panel slide gate device.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an I-swing plate for a molten metal discharging device according to a preferred embodiment of the present invention, and FIG.
■A line cross-sectional explanatory diagram; FIG. 3 is a cross-sectional explanatory diagram of a molten metal discharging device according to a preferred embodiment of the present invention; FIG. 4 is a schematic explanatory diagram of the device shown in FIG. It is. 10...Fixed plate, 11...Sliding plate, 1
6.17... Corner drop part, 18... Sliding plate main body part, 19... Concave part, 20...1 Swinging rA8 frame body, 23. ...pressing/fixing machine (14,
31, 32... Concave side wall, t('3', /+
4...Presser hardware, 54.55...Side part, 51...Bar hardware, 65.Old...Small 1~. Procedural amendment March 8, 1985 1, case description 1981 patent application No. 281820
No. 2, Title of the invention: Molten metal discharge device 3, Relationship to the amended case Patent applicant name: Toshiba Ceramics Co., Ltd. 4, immediately in person Yamada Building 5, 1-1-14 Shinjuku, Shinjuku-ku, Tokyo
, Date of amendment order: 6. Number of inventions increased by amendment 8. Contents of amendment (1) In the specification, page 18, line 12, [The method of pressing and supporting the fixed platen 10, etc. is shown in Figure 4. ``The method of press-fitting and supporting the fixed platen 10 is as shown in Figure 3.'' −λ −

Claims (1)

[Claims] A fixed plate configured to be attached to the bottom of a molten metal storage container and having a hole for allowing discharge of molten metal, and fixed to control discharge of molten metal from the hole of the fixed plate. A molten metal discharge device comprising a sliding plate having an upper surface pressed against the lower surface of the fixed plate so as to be slidably displaced relative to the plate, the upper surface of the sliding plate being pressed against the lower surface of the fixed plate. It is configured to be
A sliding body made of refractory material having a corner cutout formed diagonally with respect to the one end face on both sides of one end, and a sliding body made of metal having a recess configured to accommodate the body. a panel frame; and an end of the sliding panel main body on the side opposite to the one end abuts against a side wall of the recess of the frame in order to removably fix the sliding panel main body in the recess of the frame. and a pressing/fixing mechanism that presses the pair of corner recesses of the slide plate main body toward the opposite end so as to press the pair of corner recesses of the slide plate main body toward the opposite end. a pair of wedge-shaped press members disposed between each corner recess and the adjacent side wall of the recess to press the opposite end; and a direction in which the slide plate main body is pressed by the pair of press members. a force transmitting member disposed within the recess so as to press each presser member at both ends in the pressing direction while the presser members are movable in intersecting directions; and a force transmitting member that presses the force transmitting member in the pressing direction. A molten metal discharge device comprising a tightening mechanism provided between the force transmitting member and a frame body.