JPH0726049U - Surface pressure load device for slide valve - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to release the surface pressure of the plate bricks of the slide valve and open the clamps at the same time, and to cope with the automation of the attachment and detachment of the plate bricks. In a slide valve for controlling an outflow amount of molten metal, a clamper 21 for pressing and holding a holding frame 28 of a plate brick assembly located at a lower portion with a predetermined pressure, and a slide valve device main body 2
The lever device includes a crank arm 23 that swingably swings to 0 and a spring device 25 that urges the clamp portion 21a of the clamper 21 in the plate brick pressure contact direction, thereby forming a lever crank mechanism. It is characterized in that the clamp portion 21a of the clamper 21 is swung, swung, and retracted from the holding frame 28 of the plate brick assembly after the bias is released.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a slide valve that controls an outflow amount of molten metal at a spout portion of molten steel processing equipment, and more particularly to a surface pressure load device that applies a surface pressure of a plate brick.

[0002]

[Prior art]

 A slide valve for adjusting the pouring amount is provided at the molten metal pouring port in equipment such as continuous casting.

This slide valve has a slide valve device main body 2 fixed to the bottom 1a of a tundish or ladle 1 as a melting treatment facility, as shown in FIG. It has a fixed plate brick mounting portion 3 and a movable plate brick case 4 that overlaps with it. The plate bricks 5 and 6 are housed inside these and fixed by bolts 7 etc., and the movable plate brick case 4 is a device. By operating the hydraulic cylinder 8 supported outside the main body 2, the alignment position of the holes 5a, 6a formed in the central portions of the plate bricks 5, 6 is changed to control the outflow amount of the molten metal. Has become.

In general, the plate bricks 5 and 6 are bolted to the device main body 2 and a holding frame 9 that engages with and holds the lower surface of the plate brick case 4 that holds the plate brick 6 as shown in a partial cross section in FIG. By tightening the nut 13 via the spring 12 at 11, the spring 12 is bent at the end 11a of the bolt 11, and the spring pressure exerts a surface pressure between the plate bricks 5 and 6. Or, as shown in FIGS. 10 and 11, a hinge 14 is generally provided to open the brick case 4 regardless of whether it is a bolt type or a toggle type. A mechanism 15 clamps and fixes the plate bricks through the holding frame 9 so that a predetermined surface pressure is applied to the plate bricks.

When the holding frame 9 is set, the plate brick case 4 on the holding frame 9 engages with the engaging portion 8 b at the tip of the rod 8 a of the hydraulic cylinder 8 and slides on the holding frame 9. Is configured.

Since the slide valve plate bricks 5 and 6 are continuously used hot, it is necessary to replace them after processing several ladle.

In addition, as disclosed in Japanese Unexamined Patent Publication No. 5-169213, the surface pressure member is swung by the horizontal expansion and contraction of the cylinder, and the engaging portion of the surface pressure member is held by the plate brick. In some cases, a predetermined surface pressure is applied by advancing (or retreating) along the lower surface from the side of the frame and pressing one end of the locking portion with a spring provided in the surface pressure member.

[0008]

[Problems to be solved by the device]

 However, in the conventional surface pressure load structure using the bolts and the toggle mechanism, when the plate brick is replaced after use, the bolt 11, the nut 13, and the toggle mechanism 15 are opened to release the surface pressure of the plate bricks 5 and 6. After that, it is necessary to open the plate brick case 4 and the holding frame 9, take out the plate brick, and load a new plate brick. All of this work was done manually, but it was not easy because it was hot work. Even if this work is attempted to be automated by a robot or the like, it is extremely difficult to automatically open the plate brick case 4 and the holding frame 9 after removing the bolt 11 and the nut 13 or releasing the toggle mechanism 15 described above. Therefore, the replacement work of the plate bricks 5 and 6 could not be automated.

In addition, in the device described in the above-mentioned publication of the plate brick assembly replacement system which is premised on automation, the locking portion is pivotally supported by the surface pressure member that swings by shortening the rod of the cylinder in the horizontal direction, Since the plate brick holding frame is supported by this locking part, the locking part enters from the side of the holding frame while swinging along its lower surface, which makes it difficult to synchronize the left and right locking parts. Leverage is likely to occur and it is difficult to smoothly move to the holding state. Furthermore, if the swing limit of the surface pressure member is not defined, a predetermined surface pressure load cannot be applied, so a fixing metal fitting (stopper) must be provided for positioning in the main body of the device, which does not complicate the device. There is a problem that cannot be avoided.

In view of this, the present invention makes it possible to release the surface pressure of the plate bricks and open the clamp portion at the same time to facilitate automation, and to accurately apply a predetermined surface pressure. An object of the present invention is to provide a surface pressure load device for a slide valve.

[0011]

[Means for Solving the Problems]

 As a means for solving the problems of the above-mentioned conventional techniques, the present invention, in a slide valve for controlling the outflow amount of molten metal, presses and holds a holding frame of a plate brick assembly located below with a predetermined pressure. This clamp mechanism includes a clamper, a crank arm that supports the clamper on the slide valve device body so that the clamper can swing, and a spring device that biases the clamp part of the clamper in the plate brick pressure contact direction. The clamp portion of the clamper is configured to swing and retreat from the holding frame of the plate brick assembly after releasing the bias of the spring device. According to a second aspect of the present invention, as the swinging and swinging means of the clamper, there is provided a pin projecting from a side portion of the spring device, and a guide hole formed in a guide member of the device body into which the pin is fitted. The hole is formed by bending to move the pin outward while the spring device is being compressed. Further, claims 3 to 5 are characterized in that an actuator is used for releasing the surface pressure of the spring device, or for releasing the surface pressure and swinging and swinging means of the clamper.

[0012]

[Action]

 When the surface pressure load is released by shortening the spring of the slide valve device by appropriate means or an actuator, the crank arm oscillates and the clamper turns, so that the clamp part is located outside the holding frame of the plate brick assembly. It will be removed to hold and the plate brick assembly can be taken out.

After the plate brick assembly is set, by releasing the restraint of the spring, the crank arm swings in the direction opposite to the above to rotate the clamper, and the clamp part of the clamp part of the holding frame of the plate brick assembly. By hitting the lower surface from the outer side, the holding frame of the plate brick assembly can be pressed with a predetermined pressing force by the urging force of the spring device, and the plate brick can be supported by applying a predetermined surface pressure.

[0014]

【Example】

 Hereinafter, the present invention will be described with reference to the embodiments shown in the drawings and the same reference numerals as those in FIGS.

FIG. 1 is a bottom view showing an embodiment of a surface pressure load device according to the present invention, and FIG. 2 shows a left half portion thereof as seen in the direction of arrow A in FIG. 1 and a right half portion thereof as seen in the direction of arrow B. There is.

In the figure, reference numeral 20 indicates an apparatus main body, and clampers 21, 21 are supported by crank arms 23, 23 on both sides in the longitudinal direction of the apparatus main body 20 so as to be capable of swinging and turning.

In the illustrated embodiment, the upper ends of the crank arms 23, 23 are swingably supported by the main body 20 of the apparatus by a shaft 22, and the lower ends of the crank arms 23, 23 are provided with the intermediate parts of the clampers 21, 21. The clamper 21 is pivotally supported by a shaft 24, and is supported so that the clamper 21 can rotate about the lower shaft 24 and can rotate about the upper shaft 22.

One end of an inner holder 30 of the spring device 25, 25 is pivotally attached to a side end portion of the device body 20 by a shaft 26, and a lower end of an outer holder 29 of the spring device 25, 25 has a lower end of the clamper 21, 21. It is pivotally attached by a shaft 27 near the outer end. As a result, the crank arm 23 of the device body 20, the spring device 25, and the clamper 21 constitute a “lever crank mechanism”.

The clamper 21 is formed such that the inner end thereof rises slightly obliquely upward and serves as a clamp portion 21a, which can face the lower surface of the holding frame 28 of the plate brick assembly. Therefore, the clamper 21 is rotated about the shaft 24 by the urging force of the spring device 25 to press the holding frame 28 of the plate brick assembly against the fixed plate brick 5 side with a predetermined surface pressure.

The spring device 25 includes the outer holder 29 pivotally mounted on the shaft 27, and the inner holder 30 pivotally mounted on the shaft 26 so as to be swingably fitted in the outer holder 29. And a coil spring 31 interposed between the outer and inner holders 29 and 30, and a preload bolt 32 screwed from the outer end of the outer holder 29 to preload the spring 31. In the illustrated example, six springs 31 are arranged on each side.

A pin 33 is projected on the outer surface of the end of the outer holder 29 of the spring device 25. The pin 33 is slidable in a guide hole 35 formed in a guide member 34 on the device body 20 side. It has been inserted. The guide hole 35 is formed in a substantially V shape by a vertical hole portion 35a in a range where the spring 31 moves in the initial stage of compression and an inclined hole portion 35b that bends obliquely outward from the middle stage of compression. Therefore, when the pin 33 reaches the bent inclined hole portion 35b, the spring device 25 pivots outward around the shaft 26 as a fulcrum and escapes. This configuration is the same for the left and right spring devices 25, 25. In the figure, P indicates a sliding liner made of metal or ceramic.

Therefore, in the above-described embodiment, when the spring device 25 is compressed by an appropriate means from the clamped state (FIG. 2), the pin 33 of the outer holder 29 of the spring device 25 is moved to the vertical hole portion of the guide hole 35 by the start of compression. Since the clamper 21 moves in the direction 35a, the clamper 21 rotates about the shaft 24 at the lower end of the crank arm 23 in the direction of the arrow (a) shown in FIG. The surface pressure is released.

When the spring device 25 is further compressed, the pin 33 moves to the inclined hole portion 35b of the guide hole 35, so that the spring device 25 is rotated about the shaft 26 at the upper part and the lower part is rotated outward. As a result, the clamper 21 swings around the shaft 22 at the upper end of the crank arm 23 as shown by the arrow (b) in FIG. 3, and its clamp portion 21a retreats outward from the lower portion of the holding frame 28 ( (The state shown by the solid line in FIG. 3). After that, the plate brick assembly can be removed by using mechanical means such as a robot as shown by a chain line in the lower part of FIG.

FIG. 4 shows an embodiment in which an actuator 37 is used as the surface pressure releasing means by the spring device 25. The upper and lower parts of the spring device 25 are placed at a position of one end of the spring device 25. A cylinder portion 37a of an actuator 37 composed of a hydraulic cylinder and a robot 37b are pivotally supported coaxially with the shafts 26 and 27, and the actuator 31 is shortened to compress the spring 31 of the spring device 25. The surface pressure is released, and then the clamper 21 swings and retreats in the same manner as in the above-described embodiment to release the retention of the plate brick assembly solid.

FIG. 5 shows the actuator 37 in which the cylinder portion 37a and the rod 37b are fixedly mounted between the supporting portions 38 and 39, and the actuator 37 and the supporting portions 38 and 39 can be attached and detached by another means. It was done. Also in this embodiment, similarly to the case of FIG. 4, the actuator 37 is shortened to compress the spring 31 to release the surface pressure, and then the clamper 21 swings and retreats to play as in the previous embodiment. It is designed to release the retention of the brickwork assembly.

FIG. 6 shows a bearing at the lower part of the outer holder 29 of the spring device 25 and the arm 20a extending to the outer end of the device body 20 in place of the swinging and swinging means by the pin 33 and the guide hole 35 in the above embodiment. An actuator 37 is obliquely connected to the portion 29a, and the actuator 31 is shortened to compress the spring 31 of the spring device 25 and to swing the clamper 21 outward. Is.

Further, FIG. 7 shows an actuator 37 connected between an arm 20a at the outer end of the apparatus body 20 and a bearing portion 23a formed in the middle of the crank arm 23. The actuator 37 is shortened. By doing so, the clamper 21 is swung, swung and retracted while compressing the spring 31 of the spring device 25. Therefore, in the embodiment in which the actuator is attached, the clamper 21 can be swung and retracted after the actuator 37 is actuated to release the surface pressure, and this is automatically performed by mechanical means when replacing the plate brick assembly solid. be able to.

In any of the embodiments, when setting a new plate brick, the procedure can be performed in the reverse order of the above operation. Further, in the illustrated embodiment, the two-layer type slide valve has been exemplified, but it is needless to say that it can be applied to a three-layer type slide valve.

[0029]

[Effect of device]

 As described above, according to the present invention, the load of the spring device for maintaining the surface pressure of the plate brick assembly of the slide valve is released to release the surface pressure, and the holding and opening of the plate brick assembly are all performed. Since it can be done automatically, it is possible to introduce the replacement work of plate bricks by mechanical means such as a robot, and in particular, it is applied to the plate brick assembly type slide valve in which the plate bricks are made into a cartridge. Is effective. In addition, if an actuator is installed side by side, remote operation is possible, and since human labor during hot work is completely abolished, labor can be significantly reduced and it is extremely effective in terms of safety. In particular, the structure of the lever crank mechanism allows the device to be made compact.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view of the left half portion as viewed from the arrow A in FIG. 1 and the right half portion as viewed from the arrow B in FIG.

FIG. 3 is an explanatory view showing an operating state of the same.

FIG. 4 is a partial cross-sectional view showing an embodiment in which an actuator is attached to a spring device.

FIG. 5 is a partial cross-sectional view showing another modification of the same.

FIG. 6 is a partial cross-sectional view showing another modification of the same.

FIG. 7 is a partial cross-sectional view showing still another modified example of the same.

FIG. 8 is a vertical cross-sectional front view showing a configuration example of a conventional type slide valve.

FIG. 9 is a vertical sectional side view of a portion showing a conventional plate brick set state.

FIG. 10 is a vertical cross-sectional view showing a state where plate bricks of a conventional slide valve are set.

FIG. 11 is a longitudinal sectional view showing an open state of the same.

[Explanation of symbols]

 1 Ladle 2, 20 Device Main Body 4 Movable Plate Brick Case 5 Fixed Plate Brick 6 Movable Plate Brick 9 Holding Frame 21 Clamper 21a Clamping Part 23 Crank Arm 25 Spring Device 28 Plate Brick Assembly Holding Frame 29 Outer Holder 30 Inner Holder 31 Spring 33 pins 34 guide member 35 guide hole 35a vertical hole portion 35b inclined hole portion 37 actuator

Claims (5)

[Scope of utility model registration request] 1. A slide valve for controlling an outflow amount of molten metal, wherein a clamper for pressing and holding a holding frame of a plate brick assembly located at a lower portion with a predetermined pressure, and the clamper is rocked on a slide valve device main body. A lever lever crank mechanism is formed by having a crank arm that supports the movable swing and a spring device that urges the clamp part of the clamper in the plate brick pressure contact direction, and the clamper clamp after the spring device is de-energized. A surface pressure load device for a slide valve, characterized in that a portion thereof is pivotally swung and retracted from a holding frame of a plate brick assembly. 2. A pin projecting from a side portion of the spring device,
A guide hole formed in a guide member of an apparatus main body, into which the pin is fitted, the guide hole being bent so as to move the pin outward while the spring device is being compressed. A surface pressure load device for the slide valve described. 3. A surface pressure load device for a slide valve according to claim 1, wherein an actuator is connected between the main body of the device and the spring device, and the surface pressure applied by the spring device is released by the operation of the actuator. 4. An actuator is connected between the main body of the apparatus and an outer portion of the spring device, and the actuation of the actuator causes release of the surface pressure by the spring device and retraction of the clamper. Surface pressure load device for slide valve. 5. The surface of a slide valve according to claim 1, wherein an actuator is connected to the main body of the apparatus and a crank arm, and the actuation of the actuator causes the release of the surface pressure by the spring device and the retreat of the clamper. Pressure load device.