JP2012183557A - Injection nozzle mounting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an injection nozzle mounting device which easily mounts an injection nozzle such as a long nozzle and an immersion nozzle to the lower side of a molten metal container.SOLUTION: The injection nozzle mounting system includes a first arm 31 pivoted so as to swivel by a first pivot shaft 21 so as to be turnable to a fixed mount 20, a second arm 32 pivoted so as to turn by a second pivot shaft 22, a third arm 33 pivoted so as to be movable up and down by a third pivot shaft 23 held by the second arm, a first driving source 41 which swivels the first arm, a second driving source 42 which swivels the second arm making the second pivot shaft to be a swivel center, and a third driving source 43 which moves up and down the third arm in a height direction. While the first driving source and the second driving source are constrained in a fixed state, by activating the first driving source and the second driving source, it is possible to switch to a driving state in which the first arm and the second arm are driven and swiveled. Further, by releasing the fixed state of the first driving source and the second source, it is made possible to switch to a driven state in which the driven-pivoting of the first arm and the second arm is allowed.

Description

  The present invention relates to an injection nozzle mounting device for mounting an injection nozzle such as a long nozzle or an immersion nozzle that allows a molten metal such as molten steel used in a casting device such as a continuous casting device to pass through.

  Conventionally, injection nozzle attachment devices for attaching injection nozzles such as long nozzles and immersion nozzles have been provided (Patent Documents 1, 2, etc.). This apparatus is for attaching an injection nozzle that is attached to the bottom side of a hot water storage container for storing molten metal and allows the molten metal in the hot water storage container to pass therethrough.

JP-A-6-226432 JP-A-6-226433

  It is not always easy to attach an injection nozzle such as a long nozzle or an immersion nozzle that allows molten metal flowing out from a hot water storage container such as a ladle to the member on the bottom side of the hot water storage container. This is especially true in tight installation spaces.

  The present invention has been made in view of the above-described circumstances, and a member on the bottom side of a hot water storage container is used as an injection nozzle such as a long nozzle or a submerged nozzle for passing a molten metal such as molten steel used in a casting apparatus such as a continuous casting apparatus. It is an object of the present invention to provide an injection nozzle attachment device that can be easily attached to a device.

  (1) The present inventor has been diligently developing an injection nozzle mounting device based on the above-described problems. When installing an injection nozzle such as a long nozzle or immersion nozzle, a long nozzle or a rotary nozzle is placed around the molten metal passage opening of a movable body (plate such as a rotary nozzle) having a molten metal passage opening on the bottom side of a hot water storage container such as a ladle or tundish. Attach an injection nozzle such as an immersion nozzle by pressing it from below. In this case, when the injection nozzle is attached, (i) when the injection nozzle is brought close to the molten metal passage port of the movable body, the driving force of the first drive source and the second drive source is transmitted to the first arm and the second arm. Then, a drive configuration is executed in which the first arm and the second arm are driven to turn by the driving force of the first drive source and the second drive source.

  Next, (ii) when the nozzle port of the injection nozzle is communicated with the molten metal port at the bottom of the hot water storage container such as a ladle, the movable body is moved (including rotation and / or direct movement). Thus, when the movable body moves together with the injection nozzle, the driving force transmission from the first driving source and the second driving source to the first arm and the second arm is reduced or eliminated, and the first arm is driven by the driving force of the movable body. And the driven form which makes a 2nd arm followable turning is performed. Here, the reason why the driven form is adopted is that, in the case of (ii), since the movable body is a drive source, the drive force of the first drive source and the second drive source is not reduced or eliminated. This is because the drive force interferes with the first drive source and the second drive source, thereby hindering power transmission.

  As described above, the present inventor has conceived that the above-described problem can be achieved if the driving mode can be switched between the driving mode (i) and the driven mode (ii), and the present invention has been completed.

(2) That is, the injection nozzle mounting device according to the present invention is:
An injection nozzle mounting device for attaching the injection nozzle around the molten metal passage opening of the movable body so that the injection nozzle for passing the molten metal in the hot water storage container for storing the molten metal communicates with the molten metal passage opening of the movable body on the bottom side of the hot water storage container Because
A fixed base, a first pivot supported by the fixed base, a first arm pivotally supported by the first pivot so as to be pivotable with respect to the fixed base along the lateral direction, and held by the first arm A second pivot shaft, a second arm pivotally supported by the second pivot shaft in a lateral direction, a third pivot shaft held by the second arm, and a third pivot A third arm that is pivotally supported by a shaft so that it can be swung up and down in the height direction relative to the bottom side of the hot water storage container, and an injection nozzle is directly or indirectly attached; A first drive source for turning along the direction, a second drive source for turning the second arm along the lateral direction with the second pivot shaft as the turning center, and a third arm with respect to the bottom side of the hot water storage container Move up and down in the height direction and push the upper part of the injection nozzle around the molten metal passage when moving up Kicking and comprising a third drive source,
The injection nozzle mounting device, when mounting the injection nozzle,
(I) When the injection nozzle is brought close to the molten metal passage port of the movable body, the driving forces of the first driving source and the second driving source are transmitted to the first arm and the second arm, and the first driving source and the second driving source are transmitted. A driving configuration in which the first arm and the second arm are driven to rotate with the driving force of the first arm, and the injection nozzle of the third arm is brought close to the molten metal passage port;
(Ii) When the movable body is driven together with the injection nozzle, transmission of the driving force from the first driving source and the second driving source to the first arm and the second arm is reduced or eliminated, and the first driving force of the movable body The arm and the second arm can be switched to a driven form that enables the driven swivel.

(3) Operation of the present invention When the injection nozzle such as the long nozzle is brought close to the molten metal passage port (target position) of the movable body, the drive sources for moving the injection nozzle to the target position are the first drive source and the second drive source. It becomes. In this case, first, the driving mode (i) is executed. Then, the driving force of the first driving source and the second driving source is transmitted to the first arm and the second arm, and the first arm and the second arm are driven to turn by the driving force of the first driving source and the second driving source. . Thereby, the injection nozzle is brought close to the molten metal passage port of the movable body.

  Here, when the injection nozzle such as a long nozzle is brought close to the molten metal passage port (target position) of the movable body, if the positions of the first drive source and the second drive source are in a free state, or the first drive source And when the driving force of the second driving source is not transmitted to the first arm and the second arm, the drive turning of the first arm and the second arm is stable even if the first driving source and the second driving source are driven. Not good. In this case, it becomes difficult to quickly move the injection nozzle attached to the third arm to the target position. Therefore, in the present invention, the driving mode is switched to the driving mode (i), and the driving forces of the first driving source and the second driving source are transmitted to the first arm and the second arm, and the driving forces of the first driving source and the second driving source are transmitted. Then, the first arm and the second arm are driven to turn. Thereby, the injection nozzle such as a long nozzle is brought close to the molten metal passage port (target position) of the movable body.

  On the other hand, when the movable body moves together with the injection nozzle, the driven form (ii) is executed. That is, when the movable body is driven together with the injection nozzle, the drive source for moving the injection nozzle is the movable body. In this case, when the driving force from the first driving source and the second driving source is transmitted to the first arm and the second arm as they are, the driving force from the movable body interferes with the first driving source and the second driving source. Therefore, the movement of the movable body is not stable, and consequently the movement of the injection nozzle provided in the movable body is not stable. Therefore, according to the present invention, drive force transmission from the first drive source and the second drive source to the first arm and the second arm is reduced or eliminated. Then, the injection nozzle is moved by the driving force of the movable body, and the first arm and the second arm can be driven to turn by the driving force of the movable body. Thereby, injection nozzles, such as a long nozzle and an immersion nozzle, can be quickly and satisfactorily attached to the lower side of the hot water storage container.

  ADVANTAGE OF THE INVENTION According to this invention, the injection nozzle attachment apparatus which attaches injection nozzles, such as a long nozzle and an immersion nozzle, to the lower side of a hot water storage container can be provided.

It is a conceptual diagram which shows the process of continuously casting the molten steel of a ladle through a long nozzle. It is sectional drawing which shows the concept of the process of attaching a long nozzle to the bottom part of a ladle. It is a figure which shows the concept of an injection nozzle attachment apparatus. It is a top view which shows the concept of an injection nozzle attachment apparatus. It is a side view which shows the concept of an injection nozzle attachment apparatus. It is a top view which shows the concept which the 3rd arm of the injection nozzle attachment apparatus is expanding-contracting. It is a figure which shows the 1st restraining means for fixing the position of a 1st cylinder apparatus. It is a figure which shows the path | route structure which transmits the driving force of a 2nd cylinder apparatus to a 2nd arm. It is a figure which shows the structure which reduces or cancels the driving force transmitted to a 2nd arm from a 2nd cylinder apparatus. FIG. 10 is a diagram illustrating a path structure according to the second embodiment that transmits a driving force of a second cylinder device to a second arm. It is a figure which concerns on Embodiment 2 and shows the structure which attenuates or eliminates the driving force transmitted to a 2nd arm from a 2nd cylinder apparatus.

  According to a preferred form, the injection nozzle mounting device restrains the position of the first drive source or the second drive source in the fixed state by the restraining means in the drive form of (i), and in that state the first drive source and the first drive source Two drive sources are driven to drive and turn the first arm and the second arm. Thereby, the injection nozzle can be quickly moved to the target position on the movable body. Further, in the driven form of (ii), the fixed state of the position of the first drive source or the second drive source is released by releasing the restraint of the restraining means, and the first arm and the second arm are brought into a free state, The first arm and the second arm are allowed to follow. That is, when the movable body is driven together with the injection nozzle, the movable body becomes a drive source for the injection nozzle. In this case, when the driving force is transmitted from the first driving source and the second driving source to the first arm and the second arm, the driving force from the movable body interferes with the first driving source and the second driving source. The movement of the injection nozzle is not stable. Therefore, according to the present embodiment, by releasing the restraint of the restraining means, the fixed state of the position of the first drive source or the second drive source is released, and the first arm and / or the second arm is made free. , Allowing the first arm and the second arm to be driven.

  According to a preferred embodiment, the restraining means has a first guide part extending in a predetermined direction, a movable part along the first guide part, and a concave or convex locked part, and the first drive source and the first A first movable body having a coupler coupled to one of the two drive sources, and a convex or concave locking portion that is detachably locked to a locked portion of the first movable body; And a fourth drive source for moving the locking portion in the engagement direction and the disengagement direction. In this case, when the fourth drive source moves in the disengagement direction, the engagement between the locked portion and the locking portion is released, and one of the first drive source and the second drive source is in a free state. . The first movable body and / or the first guide part preferably has a rolling element such as a rolling bearing that enhances the mobility of the first movable body.

  According to a preferred mode, the restraining means applies the driving force of one of the first driving source and the second driving source to the first when turning the first arm and the second arm in the driving mode of (i). When the first arm and the second arm are driven to swivel in the driven form (ii), the driving force of one of the first driving source and the second driving source is transmitted to the first arm or the second arm. Do not transmit to arm or second arm.

  According to a preferred embodiment, the restraining means is fixed to the first arm or the second arm and extends in a predetermined direction, and is held by the first arm or the second arm and is movable along the second guide portion. A second movable body, a sixth drive source having a pressing portion that can be moved forward and backward to prevent linear movement in one direction of the second movable body, and forward and backward movable to prevent linear movement in the other direction of the second movable body And a seventh drive source having a pressing portion. In this case, when the sixth drive source and the seventh drive source are operated to prevent the second movable body from moving in one direction and moving in the other direction, the second movable body moves along the second guide portion. It is not possible to be fixed to the first arm or the second arm. Thereby, the injection nozzle can be quickly moved to the target position on the movable body. The second movable body and / or the second guide part preferably has a rolling element such as a rolling bearing that enhances the mobility of the second movable body.

  On the other hand, when the 6th drive source and the 7th drive source reversely move, the second movable body is moved to the second guide portion when the second movable body is allowed to move in one direction and in the other direction. The first arm or the second arm is free. The fixed state of the position of the first drive source or the second drive source is released, the first arm and the second arm are brought into a free state, and the first arm and the second arm are allowed to follow.

  According to a preferred embodiment, the first driving source, the second driving source, the third driving source, the fourth driving source, the fifth driving source (extension / contraction driving source), the sixth driving source, and the seventh driving source include fluid pressure. A cylinder device is preferred, but an electric motor device can also be used. Oil pressure, air pressure, and water pressure can be used as the fluid pressure cylinder device.

  According to a preferred embodiment of the present invention, it is preferable that at least one of the first arm, the second arm, and the third arm is extendable / contractible in its own length direction. Further, it is preferable that an extension drive source for extending and retracting the extendable arm when the first arm and / or the second arm is turned is provided. In this case, when the injection nozzle such as the long nozzle is brought close to the molten metal passage (target position) of the movable body, if there is an obstacle, the first and second arms are driven by driving the expansion / contraction drive source. In addition, at least one of the third arm can be expanded and contracted to avoid an obstacle. Therefore, an injection nozzle such as a long nozzle or an immersion nozzle can be attached to the lower side of the hot water storage container regardless of whether the installation space is narrow or wide.

  According to a preferred embodiment of the present invention, when the injection nozzle such as the long nozzle is brought close to the molten metal passage port (target position) of the movable body, the drive source for moving the injection nozzle to the target position is the first drive source and the second drive source. It becomes a driving source. In this case, first, it is preferable that at least one of the first arm, the second arm, and the third arm can be expanded and contracted in its own length direction. In this case, the first arm may be extendable. The second arm may be extendable. The third arm may be extendable. An expansion / contraction drive source for extending / contracting the extendable / contracting arm is provided. The expansion / contraction drive source is preferably a fluid pressure cylinder device, but may be an electric motor. Oil pressure, air pressure, and water pressure can be used as the fluid pressure cylinder device.

  When an injection nozzle such as a long nozzle is brought close to the molten metal passage port (target position) of the movable body, if there is an obstacle, the first arm, the second arm, and the third arm are driven by driving the telescopic drive source. At least one of the arms can be appropriately expanded and contracted to avoid an obstacle.

  According to a preferred embodiment, the first arm may be extendable as described above. The second arm may be extendable. The third arm that can be raised and lowered in the height direction may be extendable. If the third arm that can be raised and lowered in the height direction can be expanded and contracted, it is easy to avoid interference and collision with an obstacle in both the height direction and the length direction. An expansion / contraction drive source for extending / contracting the extendable / contracting arm is provided.

(Embodiment 1)
FIG. 1 is a conceptual diagram showing a usage pattern of the first embodiment. As shown in FIG. 1, a ladle 10 is provided as a hot water storage container for storing high-temperature molten steel as a molten metal. A tundish 15 is provided under the ladle 10. Below the tundish 15 is provided a mold 17 for promoting solidification of molten steel having a cooling passage 17a through which a refrigerant flows. A continuous casting apparatus is provided below the mold 17. On the bottom 10 a side of the ladle 10, a molten metal passage device 11 for the ladle 10 is provided. FIG. 2 shows the vicinity of the molten metal passage device 11 provided on the bottom 10 a side of the ladle 10. As schematically shown in FIG. 2, the molten metal passage device 11 includes a fixing upper plate 12 (first plate) having a molten steel port 12 c facing the molten steel port 10 c of the bottom portion 10 a of the ladle 10, and an upper plate. 12 has a lower plate 13 (second plate, drive plate) which is also called a rotary nozzle capable of rotating and sliding with respect to 12. The lower plate 13 is driven by a plate driving source 19 having a fluid pressure mechanism such as hydraulic pressure or an electric motor mechanism.

  FIG. 2 shows the vicinity of the lower plate 13, which is also called a rotary nozzle. The molten steel passage 14 (molten passage) of the lower plate 13 is provided with a long nozzle 18 (injection nozzle) having a long cylindrical shape from the lower side of this through the collector nozzle 13x, and the injection nozzle according to this embodiment. It is pressed by the mounting device 2. As shown in FIG. 2, the plate driving source 19 allows the lower plate 13 to rotate about its central axis P1. When the lower plate 13 is rotated together with the long nozzle 18 around the central axis P1 by the plate driving source 19, the molten steel passage port 14 of the lower plate 13 is rotated around the central axis P1 and together with the nozzle port 18c of the long nozzle 18. It is possible to face the molten steel port 12c of the upper plate 12 (position XA). In this case, the molten steel stored in the ladle 10 includes a molten steel port 10c in the bottom 10a of the ladle 10, a molten steel port 12c in the upper plate 12, a molten steel passage port 14 (molten passage port) in the lower plate 13, and a long nozzle. As can be understood from FIG. 1, 18 nozzle ports 18 c are supplied to the mold 17 through the molten steel port 15 c of the tundish 15 and the immersion nozzle 16, and the molten steel is cooled by the mold 17, supplied to the continuous casting apparatus, and continuously cast. A piece is formed.

  FIG. 3 schematically shows a plan view of the basic configuration of the injection nozzle mounting device 2 according to the present embodiment. This device is a device for moving a long nozzle 18 as an injection nozzle closer to the lower plate 13 (rotary nozzle) and pressing it from below the molten steel passage 14 of the lower plate 13. The injection nozzle attachment device 2 attaches a long nozzle 18 (injection nozzle) having a nozzle hole 18 c for allowing the molten steel in the ladle 10 to pass through to the lower plate 13.

  As shown in FIG. 3, the injection nozzle mounting device 2 includes a fixed base 20, a first pivot shaft 21 held on the fixed rack 20, and a lateral direction (a direction) by the first pivot shaft 21. The first arm 31 pivotally supported with respect to the fixed mount 20, the second pivot shaft 22 held on the distal end side of the first arm 31, and the second pivot shaft 22 in the lateral direction (direction b) ) Along the second arm 32 pivotably supported along the second arm 32, the third pivot shaft 23 held by the second arm 32, and the third pivot shaft 23 with respect to the bottom 10 a of the ladle 10. And a third arm 33 pivotally supported so as to be able to move up and down in the vertical direction (perpendicular to the plane of FIG. 3). In FIG. 3, the a direction corresponds to a horizontal two-dimensional Y direction. The b direction corresponds to a horizontal two-dimensional X direction.

  The long nozzle 18 is attached to the distal end portion of the third arm 33 via the rotating portion 34. The rotating unit 34 can rotate the long nozzle 18 by approximately 90 degrees, and can stand the long nozzle 18 in the vertical direction or lie down in the horizontal direction.

  Further, as shown in FIG. 3, the present apparatus has the first arm 31 along the lateral direction (a direction) with the center axis P <b> 1 of the first pivot shaft 21 as the pivot center at the bottom 10 a of the ladle 10 in which molten steel is stored. A first cylinder device 41 as a first drive source for turning, and a second drive source for turning the second arm 32 along the lateral direction (b direction) with the central axis P2 of the second pivot shaft 22 as the turning center. Second cylinder device 42. The second arm 32 and the third arm 33 perform the same movement in the a direction and the b direction, that is, in the horizontal two-dimensional direction.

  Further description will be made with reference to FIGS. As shown in FIG. 4, the first cylinder device 41 is held on a first movable body 52 that is movable on the fixed base 20 by a connector 413 so as to be rotatable in the direction of arrow D (lateral direction, see FIG. 4). The first cylinder body 410 and the first rod 411 that can be expanded and contracted with respect to the first cylinder body 410 are provided. The first rod 411 is pivotally supported by the first arm 31 so as to be rotatable in the direction of arrow D via a pivotal support 31k. When the first cylinder device 41 operates and the first rod 411 expands and contracts, the first arm 31 pivots in the direction a (see FIGS. 3 and 4) with the central axis P <b> 1 of the first pivot shaft 21 as the pivot center. The second cylinder device 42 has a second cylinder body 420 held on the first arm 31 by a pivotal support 420 so as to be rotatable in the direction of arrow b (see FIGS. 3 and 4), and the second cylinder body 420. And a second rod 421 that can be expanded and contracted. The second cylinder body 420 is pivotally supported by the first arm 31 via a pivotal support 420k. The second rod 421 is pivotally supported by the second arm 32 via a pivotal support 32k. When the second cylinder device 42 operates and the second rod 421 expands and contracts in the direction of arrow S10 (see FIG. 4), the second arm 32 moves in the b direction with the central axis P2 of the second pivot shaft 22 as the turning center (FIG. 3). , See FIG. 4).

  Further, as shown in FIG. 5, the present apparatus has the third arm 33 of the ladle 10 with the central axis P3 along the horizontal direction of the horizontal third pivot shaft 23 of the second arm 32 as the turning center. And a third cylinder device 43 as a third drive source that moves up and down in the height direction (the H direction shown in FIG. 5 and the direction perpendicular to the plane of FIG. 3) with respect to the bottom 10a side. Here, when the third cylinder device 43 is actuated and the rod 431 is extended in the arrow S1 direction (see FIG. 5), the third arm 33 is shown in FIG. 5 with the central axis P3 of the third pivot shaft 23 as the turning center. It turns in the H direction (height direction), and the upper part of the long nozzle 18 attached to the tip of the third arm 33 can be pressed to the periphery of the molten steel passage 14 of the lower plate 13 via the collector nozzle 13x. (See FIGS. 2 and 5).

  Further explanation will be added. As shown in FIG. 4, a fixed mount 20 that functions as a fixed portion is provided. The fixed base 20 holds a vertical first pivot shaft 21 having a vertical central axis P1. A first arm 31 is pivotally supported on the solid base 20 by a first pivot shaft 21 so as to be able to turn along the lateral direction (direction a). On the distal end side of the first arm 31, a vertical second pivot shaft 22 having a vertical central axis P2 is held. The second arm 32 is pivotally supported by the second pivot shaft 22 so as to be rotatable along the lateral direction (direction b). The second arm 32 holds a third pivot shaft 23 having a central axis P3 along the horizontal direction of the horizontal axis. A third arm 33 is pivotally supported by the third pivot shaft 23 so as to be capable of moving up and down. When the third arm 33 rises and turns in the direction of arrow H1 (see FIG. 5) with the third pivot shaft 23 as the turning center, the upper end of the long nozzle 18 held at the tip of the third arm 33 is The lower plate 13 provided on the bottom portion 10a of the lower plate 13 is approached and pressed around the molten steel passage 14 of the lower plate 13 via the collector nozzle 13x. The long nozzle 18 is attached to the distal end portion of the third arm 33 via the rotating portion 34. The rotating unit 34 can rotate the long nozzle 18 by approximately 90 degrees, and the long nozzle 18 can be disposed in the vertical direction or in the horizontal direction.

  In other words, as shown in FIG. 3, the present apparatus has the first arm 31 along the lateral direction (a direction) with the first pivot shaft 21 as the pivot center at the bottom 10 a of the ladle 10 where molten steel (molten metal) is stored. A first cylinder device 41 as a first drive source for turning and a second drive source for turning the second arm 32 along the lateral direction (direction b) with the second pivot shaft 22 as a turning center. And a cylinder device 42. Further, as shown in FIG. 5, the apparatus moves the third arm 33 up and down in the height direction (the H direction shown in FIG. 5, the direction perpendicular to the paper surface of FIG. 3) with respect to the bottom 10 a side of the pan 10. And a third cylinder device 43 as a drive source. As shown in FIG. 5, the third cylinder device 43 is disposed obliquely, and is held by the second arm 32 so as to be rotatable along the arrow M direction (height direction) by the pivotal support 32 m. The third cylinder body 430 and the third rod 431 that can be expanded and contracted with respect to the third cylinder body 430 are provided. The third rod 431 is pivotally supported by the root portion 33w of the third arm 33 via a pivotal support 33e so as to be rotatable in the height direction. When the third cylinder device 43 is operated and the third rod 431 is extended in the direction of arrow S1 (see FIG. 5), the third arm 33 is pivoted about the central axis P3 (see FIG. 5) of the third pivot shaft 23. It turns in the H direction (see FIG. 5) shown in FIG. Therefore, the upper part of the long nozzle 18 attached to the tip of the third arm 33 can be pressed against the periphery of the molten steel passage 14 of the lower plate 13 via the collector nozzle 13x. As shown in FIG. 5, the second arm 32 has a rolling element 320. Since the rolling element 320 moves along the sliding surface 200 of the fixed mount 20, the second arm 32 can be turned well.

  As shown in FIG. 4, the third arm 33 is fitted into the arm main body 330 that extends linearly, a fitting passage 331 that is formed in the arm main body 330 and extends along the length direction thereof, and a fitting passage 331. And a secondary arm 322 extending linearly. A fifth cylinder device 45 is attached to the third arm 33 as a fifth drive source. The fifth cylinder device 45 includes a fifth cylinder body 450 attached to the arm body 330 of the third arm 33 and a fifth rod 451 that can be expanded and contracted with respect to the fifth cylinder body 450. The fifth rod 451 is connected to the sub arm 322. When the fifth cylinder device 45 is actuated, the fifth rod 451 moves forward in the direction of the arrow L1, and the sub arm 322 and the long nozzle 18 move forward in the direction of the arrow L1 with respect to the fifth cylinder device 45 and extend. When the fifth cylinder device 45 reversely moves, the fifth rod 451 retracts in the direction of the arrow L2, and the sub arm 322 and the long nozzle 18 retract in the direction of the arrow L2 with respect to the fifth cylinder device 45 and contract. Thereby, the 3rd arm 33 provided with the long nozzle 18 can be expanded-contracted in the length direction. Easy to avoid obstacles. That is, when there is an obstacle at the destination of the third arm 33, the first arm 31 is turned in the direction a (see FIGS. 3 and 4) while the third arm 33 is contracted, The second arm 32 and the third arm 33 are turned in the b direction (see FIGS. 3 and 4). When the obstacle disappears and approaches the destination, the second arm 32 and the third arm 33 are turned in the direction b (see FIGS. 3 and 4) while appropriately extending the third arm 33 as necessary.

  FIG. 7 shows the first restraining means 5 that locks and restrains the first cylinder device 41. As shown in FIG. 7, the first restraining means 5 includes a first guide part 51, a first movable body 52 that can move along the first guide part 51, a locking part 53, and a fourth drive source. As a fourth cylinder device 44. The 1st guide part 51 is being fixed to the site | part 20a of the fixed mount 20, and makes the shape of several rails linearly extended in the arrow C direction which is a predetermined direction (free movement direction of the 1st cylinder apparatus 41). The first movable body 52 can move linearly along the first guide portion 51 and has a concave locked portion 52a having a groove surface 52e. As shown in FIG. 7, the first movable body 52 and / or the first guide portion 51 preferably includes a rolling body 52k such as a rolling bearing that improves the mobility of the first movable body 52. The cylinder body 410 of the first cylinder device 41 is connected to the first movable body 52 in a direction indicated by an arrow D (lateral direction) by a connector 413 so as to be rotatable. The locking portion 53 has a convex wedge projection 53a that is locked to the concave locked portion 52a of the first movable body 52 so as to be engageable and disengageable. The wedge protrusion 53a has a wedge-shaped inclined surface 53e. The fourth cylinder device 44 moves the locking portion 53 in the engagement direction (arrow E1 direction) and the disengagement direction (arrow E2 direction). The fourth cylinder device 44 includes a fourth cylinder body 440 fixed to the fixed mount 20 and a fourth rod 441 that can be expanded and contracted with respect to the fourth cylinder body 440. The fourth rod 441 is coupled to the locking portion 53 via a coupling tool 53x.

  Here, as can be understood from FIG. 7, the fourth cylinder device 44 is actuated to move the locking portion 53 in the engaging direction (arrow E1 direction), and the convex locking portion 53 is moved into the concave locked state. When engaged with the portion 52a, the first movable body 52 is locked and the first movable body 52 moves in the direction of arrow C (the direction in which the first cylinder device 41 is free) with respect to the first guide portion 51. That is blocked. As a result, the position of the fourth cylinder device 44 (the position in the arrow C direction) is locked, and the first cylinder 51 is prevented from moving in the arrow C direction. Similarly, the first arm 31 connected to the fourth cylinder device 44 is restrained in the arrow C direction, and is prevented from freely moving in the arrow C direction with respect to the first guide portion 51. That is, the first cylinder device 41 and the first arm 31 are set to the first restraint form (drive form).

  Further, as can be understood from FIG. 7, the fourth cylinder device 44 reversely moves to move the locking portion 53 in the disengaging direction (arrow E2 direction), and the wedge projection 53a of the locking portion 53 and the locked portion 52a. When the engagement is released, the lock of the first movable body 52 is released, and the first movable body 52 can move in the direction of arrow C along the first guide portion 51. As a result, the position of the fourth cylinder device 44 connected to the first movable body 52 is unlocked, and the fourth cylinder device 44 can move freely in the direction of arrow C with respect to the first guide portion 51. Is done. Similarly, the lock of the first arm 31 connected to the fourth cylinder device 44 in the direction of arrow C is released, and the first arm 31 can move freely along the first guide portion 51 in the direction of arrow C. It is possible. That is, the first restraining mode (driving mode) of the first cylinder device 41 and the first arm 31 is released, and the first arm 31 that is rotatably connected to the first cylinder device 41 and the first cylinder device 41. The movement is switched to a release form (following form) that is free.

  FIG. 8 shows the second restraining means 8. As shown in FIG. 8, the second restraining means 8 has a clutch means 9. The clutch means 9 is (i) a transmission configuration for transmitting the driving force of the second cylinder device 42 to the second arm 32 when the first arm 31 and the second arm 32 are driven to turn (refer to FIG. 8). And (ii) when the first arm 31 and the second arm 32 are driven to turn, the driving force of the second cylinder device 42 is not transmitted to the second arm 32 (the driven mode, see FIG. 9). Switchable.

  The clutch means 9 will be further described. As shown in FIG. 8, the clutch means 9 includes a linear rail-shaped second guide portion 91 fixed to the second arm 32, and a second guide movable along the second guide portion 91 in the directions of arrows F <b> 1 and F <b> 2. The movable body 92 includes a sixth cylinder device 46 as a sixth drive source, and a seventh cylinder device 47 as a seventh drive source. The second guide portion 91 extends in a rail shape along a predetermined direction (arrow F1, F2 direction), that is, along the length direction of the second arm 32. The second movable body 92 is movable along the directions of the arrows F1 and F2 (the length direction of the second arm 32) along the second guide portion 91, and moves the second rod 421 of the second cylinder device 42. It fixes so that rotation is possible with the pivot tool 32k. The second movable body 92 has a stopper 926 and a stopper 927. As shown in FIG. 8, the second movable body 92 and / or the second guide portion 91 preferably includes a rolling body 92 k such as a rolling bearing that improves the mobility of the second movable body 92.

  As can be understood from FIG. 8, the second cylinder device 42 includes a second cylinder body 420 that is rotatably supported by the first arm 31 by a pivotal support 420 k, and a second cylinder body that can extend and contract from the second cylinder body 420. Rod 421. As can be understood from FIG. 8, the sixth cylinder device 46 includes a sixth cylinder body 460 fixed to the second arm 32, and a sixth cylinder device 460 that can expand and contract with respect to the sixth cylinder body 460 along the directions of arrows F <b> 1 and F <b> 2. 6 rods 461. FIG. 8 schematically shows a transmission form (driving form) for transmitting the driving force of the second cylinder device 42 to the second arm 32.

  According to the transmission form (driving form), as shown in FIG. 8, the pressing portion 461 m of the sixth rod 461 engages with the stopper 926 of the second movable body 92, thereby causing the one-way direction of the second movable body 92. The straight movement in the direction of arrow F1 is prevented. As shown in FIG. 8, the seventh cylinder device 47 includes a seventh cylinder body 470 fixed to the second arm 32 and a seventh cylinder body 470 that can expand and contract with respect to the seventh cylinder body 470 along the directions of arrows F1 and F2. Rod 471. In the transmission mode (driving mode), the pressing portion 471m of the seventh rod 471 engages with the stopper 927 of the second movable body 92, thereby moving the second movable body 92 in the other direction (arrow F2 direction). Stop.

  Here, as shown in FIG. 8, according to the transmission form (drive form), the sixth cylinder device 46 operates and the pressing portion 461 m of the sixth cylinder device 46 abuts against the stop portion 926 of the second movable body 92. . In addition, the seventh cylinder device 47 operates and the pressing portion 471 m of the seventh cylinder device 47 comes into contact with the stopper 927 of the second movable body 92. As a result, the second movable body 92 is locked and prevented from moving along the second guide portion 91 (in the directions of arrows F1 and F2). Thereby, the 2nd cylinder apparatus 42 is made into the 2nd restraint form (drive form).

  On the other hand, FIG. 9 shows a non-transmission form (driven form). According to the non-transmission mode, as shown in FIG. 9, the sixth cylinder device 46 reversely moves and the pressing portion 461 m of the sixth cylinder device 46 is separated from the stopper 926 of the second movable body 92 by ΔK1. The seventh cylinder device 47 is activated, and the pressing portion 471m of the seventh cylinder device 47 is separated from the stop portion 927 of the second movable body 92 by ΔK2 (see FIG. 9). Then, the driving force in the F1 and F2 directions from the second cylinder device 42 is not directly transmitted to the second arm 32 via the second movable body 92. That is, even if the second rod 421 moves forward in the direction of the arrow F1 together with the second movable body 92 by the driving force from the second cylinder device 42, it is equivalent to ΔK1 until the stopper 926 contacts the pressing portion 461m. 9), the second movable body 92 moves forward in the sky, and the second arm 32 does not move in the arrow F2 direction. That is, the driving force in the direction of the arrow F1 of the second cylinder device 42 is reduced or eliminated.

  Even if the second rod 421 is retracted in the direction of the arrow F2 together with the second movable body 92 by the driving force from the second cylinder device 42, it is equivalent to ΔK2 until the stopper 927 comes into contact with the pressing portion 471m (FIG. 9), the second movable body 92 retreats idle, and the second arm 32 does not move in the direction of arrow F2. That is, the driving force in the direction of arrow F2 of the second cylinder device 42 is reduced or eliminated.

  Accordingly, when the lower arm 13 is driven by the lower plate 13 to be driven and rotated, the second movable body 92 can move freely along the rail-shaped second guide portion 91 by ΔK1 + ΔK2. As a result, the second arm 32 can freely follow the second cylinder device 42 by ΔK1 + ΔK2, and can turn the second arm 2 to follow.

(Usage of this device)
The usage form of this apparatus will be described. First, the long nozzle 18 is held by the rotating portion 34 (injection nozzle holding portion) at the tip of the third arm 33. In this case, in order to prevent contact interference between the long nozzle 18 and the obstacle, it is preferable to lay the long nozzle 18 along the lateral direction (see FIG. 6). Next, as can be understood from FIG. 7, the fourth cylinder device 44 is operated to move the locking portion 53 in the engaging direction (the direction of the arrow E <b> 1 shown in FIGS. 6 and 7). The protrusion 53 a and the recessed locked portion 52 a are engaged, and the first movable body 52 is locked to the fixed base 20. As a result, the first movable body 52 is fixed to the fixed base 20 and is prevented from moving in the arrow C direction with respect to the first guide portion 51. As a result, the first cylinder device 41 is restrained and is prevented from moving in the arrow C direction with respect to the first guide portion 51. Similarly, the first arm 31 connected to the first cylinder device 41 is locked and restrained, and free movement in the arrow C direction with respect to the first guide portion 51 is prevented. As a result, the first cylinder device 41 and the first arm 31 are in the first restraint form (drive form).

  Further, as can be understood from FIG. 8, the sixth cylinder device 46 operates, the pressing portion 461 m of the sixth cylinder device 46 abuts against the stop portion 926 of the second movable body 92, and the seventh cylinder device 47 is When the operation is performed and the pressing portion 471m of the seventh cylinder device 47 abuts against the stopper 927 of the second movable body 92, the second movable body 92 is locked and moves along the second guide portion 91 (arrow F direction). That is blocked. Thereby, the 2nd cylinder apparatus 42 is made into the 2nd restraint form (drive form) (refer FIG. 8).

  With the first cylinder device 41 and the second cylinder device 42 locked and restrained as described above, the first cylinder device 41 is operated to turn the first arm 31 in the direction a (see FIGS. 3 and 4). At the same time, the second cylinder device 42 is operated to rotate the second arm 32 and the third arm 33 in the direction b (see FIGS. 3 and 4). Accordingly, the long nozzle 18 at the tip of the third arm 33 can be approached toward the lower plate 13, and can be further approached directly below the molten steel passage port 14 of the lower plate 13. Such an operation can be executed by automatically driving the first cylinder device 41 and the second cylinder device 42 based on a program stored in the storage medium area of the control device.

  As described above, when the first arm 31 is swung in the direction a and the second arm 32 and the third arm 33 are swung in the direction b, as shown in FIG. It is preferable to arrange the long nozzle 18 along the horizontal direction by the rotating action of the rotating portion 34. In this case, when the 1st arm 31, the 2nd arm 32, and the 3rd arm 33 turn, the contact interference with the long nozzle 18 and another site | part is prevented. In this case, if necessary, the fourth cylinder device 44 is operated to expand and contract the third arm 33 in the length direction (the directions of arrows L1 and L2 shown in FIG. 6). As a result, the long nozzle 18 at the tip of the third arm 33 can be appropriately advanced in the length direction (arrow L1 direction) of the third arm 33.

  Thereafter, the long nozzle 18 is rotated by the rotating unit 34 and arranged along the vertical direction. In this state, as can be understood from FIG. 5, the rod 431 of the third cylinder device 43 is extended in the direction of arrow S1, and the third arm 33 is set in the direction of arrow H1 with the central axis P3 of the third pivot shaft 23 as the center of rotation. Swivel up. As a result, the upper part of the long nozzle 18 at the tip of the third arm 33 is pressed directly below the molten steel passage 14 of the lower plate 13 via the collector nozzle 13x (see FIGS. 2 and 5).

  As described above, when the first arm 31, the second arm 32, and the third arm 33 are turned, when the long nozzle 18 is disposed directly below the molten steel passage 14 of the lower plate 13 from the standby position, the first cylinder device is assumed. If the positions of the first cylinder device 41 and the second cylinder device 42 are free, the positions of the first cylinder device 41 and the second cylinder device 42 move unnecessarily, and the first arm 31 and the second arm 32 can be turned well. Can not. However, according to this embodiment, since the positions of the first cylinder device 41 and the second cylinder device 42 are locked and restrained, the first arm 31 turns in the direction a and the second arm 32 b A good turn in the direction is possible.

  Next, since the position of the first cylinder device 41 is unlocked, the fourth cylinder device 44 (see FIGS. 4, 6, and 7) is moved backward to disengage the locking portion 53 (see FIGS. 4 and 4). Retracted in the direction of arrow E2 shown in FIG. 7, the engagement of the wedge protrusion 53a of the locking portion 53 and the recessed locked portion 52a is released, and the lock of the position of the first movable body 52 is released. As a result, the first movable body 52 can move in the direction of arrow C along the first guide portion 51. Thus, the lock of the position of the first movable body 52 in the direction of arrow C is released, and the first movable body 52 and the first cylinder device 41 can move freely along the first guide portion 51 in the direction of arrow C. It is possible. Similarly, the fourth cylinder device 44 can move freely in the direction of arrow C (see FIG. 4). The restraint of the first arm 31 connected to the fourth cylinder device 44 is released, and the first arm 31 can freely move in the arrow C direction with respect to the first guide portion 51. That is, the first cylinder device 41 and the first arm 31 are in a release form (following form).

  Further, as can be understood from FIG. 9, the sixth cylinder device 46 is moved backward to separate the pressing portion 461 m of the sixth cylinder device 46 from the stop portion 926 of the second movable body 92 by ΔK1 (see FIG. 9). Further, the seventh cylinder device 47 is moved backward to separate the pressing portion 471m of the seventh cylinder device 47 from the stopper 927 of the second movable body 92 by ΔK2 (see FIG. 9). The second movable body 92 held by the second arm 32 can be moved along the second guide portion 91 in the directions of arrows F1 and F2. In this case, the first arm 31 can arbitrarily turn in the a direction. Similarly, the second arm 32 can arbitrarily turn in the b direction.

  Since the first arm 31 and the second arm 32 can be driven in this way, this apparatus uses a plate driving source 19 (a driving source for the rotary nozzle, see FIG. 2) to lower the lower plate 13, also called a rotary nozzle. It can be rotated around 13 central axes P1. Thereby, the molten steel passage port 14 of the lower plate 13 is made to face the molten steel port 12 c of the upper plate 12. As a result, the molten steel port 10c of the bottom 10a of the ladle 10, the molten steel port 12c of the upper plate 12, the molten steel passage port 14 (molten metal passage port) of the lower plate 13, and the nozzle port 18c of the long nozzle 18 communicate (see FIG. 1). ). As a result, the molten steel stored in the ladle 10 includes a molten steel port 10c in the bottom 10a of the ladle 10, a molten steel port 12c in the upper plate 12, a molten steel passage port 14 (molten passage port) in the lower plate 13, and a long nozzle. 18 is supplied to the mold 17 through the nozzle port 18c and the molten steel port 15c of the tundish 15, and the molten steel is cooled by the mold 17 and supplied to the continuous casting apparatus to form a continuous cast piece.

  When the lower plate 13 is rotated around the central axis P1 by the plate driving source 19 (see FIG. 2) while pressing the upper part of the long nozzle 18 around the molten steel passage 14 of the lower plate 13 as described above, the first When the movable body 52 and the first cylinder device 41 are locked and restrained, or when the second movable body 92 is locked, the driving force of the lower plate 13 is applied to the first cylinder device 41 and the first cylinder device 41. There is a possibility of interfering with the two-cylinder device 42, and there is a possibility that the first arm 31 and the second arm 32 cannot smoothly follow the rotational drive of the lower plate 13.

  In this regard, according to the present embodiment, when the lower plate 13 is rotated around the central axis P1 by the plate drive source 19 (see FIG. 2), the first movable body 52 and the first cylinder device 41 are already unlocked. Thus, the position of the first cylinder device 41 is free, and free movement is possible in the direction of arrow C. Further, the lock of the second movable body 92 is released, the second movable body 92 can be freely moved in the directions of arrows F1 and F2, and the second arm 32 can freely turn by ΔK1 + ΔK2.

  Therefore, according to the present embodiment, when the lower plate 13 rotates around the central axis P1 by the plate drive source 19 (see FIG. 2), the cylinder devices 41 and 42 do not become an obstacle, and the first arm 31 and the first The two arms 32 can follow the drive of the lower plate 13 freely and smoothly. As a result, as can be understood from FIG. 1, the molten steel port 10 c of the bottom 10 a of the ladle 10, the molten steel port 12 c of the upper plate 12, the molten steel passage port 14 (molten metal passage port) of the lower plate 13, and the nozzle port of the long nozzle 18. 18c can be communicated satisfactorily. As can be understood from FIG. 1, the molten steel stored in the ladle 10 includes a molten steel port 10 c at the bottom 10 a of the ladle 10, a molten steel port 12 c of the upper plate 12, and a molten steel passage port 14 (molten metal) of the lower plate 13. The passage port), the nozzle port 18c of the long nozzle 18 is held by the tundish 15, and further supplied from the molten metal port 15c of the tundish 15 to the mold 17, and continuously cast by a continuous casting apparatus to form a continuous cast piece.

  According to the present embodiment, when the first arm 31 and the second arm 32 are swung so that the long nozzle 18 approaches the molten steel passage 14 (target position) of the lower plate 13 (see FIG. 6), the obstacle is If present, the third cylinder 33 that can be moved up and down in the height direction held by the second arm 32 by appropriately driving the fifth cylinder device 45 (extension drive source) is moved in the length direction thereof. It can be expanded and contracted as appropriate. Therefore, obstacles can be easily avoided during turning. Therefore, even if it is a narrow installation space or a wide installation space, the long nozzle 18 can be easily attached to the lower side of the lower plate 13 on the bottom 10a side of the pan 10.

  In particular, the length of the third arm 33 is longer than the lengths of the first arm 31 and the second arm 32. In this way, the fifth cylinder device 45 is provided on the longest third arm 33 and the sub arm 322 of the third arm 33 is expanded and contracted in the directions of the arrows L1 and L2. It is easy to avoid things.

  Further, according to the present embodiment, as shown in FIG. 6, since the third arm 33 can be extended as necessary along the direction of the arrow L1, the tundish 15 (high heat source) for storing molten steel and the tundish 15 are provided. The 1st cylinder apparatus 41 and the 2nd cylinder apparatus 42 can be kept away from the hot molten steel (high heat source) of the ladle 10 which exists. For this reason, the advantage which is easy to protect the 1st cylinder apparatus 41 and the 2nd cylinder apparatus 42 from the high heat | fever of molten steel is acquired. Furthermore, the fifth cylinder device 45 which is an expansion / contraction source for expanding / contracting the third arm 33 is attached to the third arm 33 so as not to affect the pivoting supportability of the third pivot shaft 23. For this reason, the fifth cylinder device 45 that functions as an expansion / contraction drive source for expanding / contracting the third arm 33 does not affect the rotational supportability of the third pivot shaft 23.

  Furthermore, according to the present embodiment, the third arm 33 that can extend and contract in the length direction can be raised and lowered in the height direction (arrow H direction) by the third cylinder device 43 and the third pivot shaft 23. For this reason, when the long nozzle 18 is attached, the third arm 33 interferes with or collides with an obstacle. As a result, the long nozzle 18 held by the third arm 33 interferes with or collides with the obstacle. This is advantageous in that it can be easily avoided both in the length direction of the third arm 33 (arrow L1, L2 direction) and in the height direction (arrow H direction).

  According to the above-described embodiment, the present invention is applied to the long nozzle 18 serving as the injection nozzle. However, the present invention is not limited to this, and the present invention may be applied to the immersion nozzle 16. That is, as shown in FIG. 1, a molten metal passage device 11 </ b> T for the tundish 15 is provided on the bottom 15 a side of the tundish 15. As schematically shown in FIG. 1, the molten metal passage device 11 </ b> T has a fixed upper plate 12 </ b> T having a molten steel port 120 facing the molten steel port 15 c of the bottom portion 15 a of the tundish 15, and rotates with respect to the upper plate 12 </ b> T. It has a slidable lower plate 13T (second drive plate). The immersion nozzle 16 (injection nozzle) is pressed from below the molten steel passage port 14T (molten metal passage port) of the lower plate 13T. The present invention can also be applied to the immersion nozzle 16 of the molten metal passage device 11T for the tundish 15.

(Embodiment 2)
10 and 11 show the second embodiment. The present embodiment has basically the same configuration and the same operational effects as the first embodiment. As shown in FIGS. 10 and 11, the second guide portion 91 is fixed to the second arm 32. The second movable body 92 is held so as to be movable in the directions of the arrows F1 and F2 along the second arm 32 and the second guide portion 91. However, the second cylinder 420 of the second cylinder device 42 is fixed to the second movable body 92, and the second rod 421 is pivotally supported by the first arm 31.

  Here, as shown in FIG. 10, according to the transmission mode, the sixth cylinder device 46 operates and the pressing portion 461 m of the sixth cylinder device 46 abuts against the stop portion 926 of the second movable body 92. In addition, the seventh cylinder device 47 operates and the pressing portion 471 m of the seventh cylinder device 47 comes into contact with the stopper 927 of the second movable body 92. As a result, the second movable body 92 is locked to the second arm 32 and is prevented from moving along the second guide portion 91 (arrow F1, F2 direction). As a result, the second cylinder device 42 held by the second movable body 92 is in the second restraint form.

  On the other hand, FIG. 11 shows a non-transmission form (driven form). According to the non-transmission form (driven form), as shown in FIG. 11, the sixth cylinder device 46 reversely moves so that the pressing portion 461 m of the sixth cylinder device 46 is separated from the stopper 926 of the second movable body 92 by ΔK1. To do. The seventh cylinder device 47 is operated, and the pressing portion 471 m of the seventh cylinder device 47 is separated from the stop portion 927 of the second movable body 92 by ΔK2. Then, the second movable body 92 can move forward and backward in the directions of arrows F1 and F2 together with the second cylinder device 42. Therefore, when the second arm 32 is driven to turn by using the lower plate 13 as a drive source, the second cylinder device 42 fixed to the second movable body 92 can freely move ΔK1 + ΔK2 along the second guide portion 91. Can move. As a result, the second arm 32 and the second cylinder device 42 are in a free state by ΔK1 + ΔK2, and the second arm 2 can be allowed to rotate.

  Also in this embodiment, when the long nozzle 18 approaches the molten steel passage 14 (target position) of the lower plate 13, if there is an obstacle, the fifth cylinder device 45 (extension drive source) is driven. Thus, the third arm 33 held by the second arm 32 can be appropriately expanded and contracted in the length direction to avoid an obstacle. Therefore, even if it is a narrow installation space or a wide installation space, it can be easily attached to the lower side of the lower plate 13 of the long nozzle 18.

(Other)
The present invention is not limited to the embodiments described above and shown in the drawings, and can be implemented with appropriate modifications within the scope not departing from the gist. Although FIG. 7 shows a structure in which the position of the first cylinder device 41 is restrained and locked, it may be applied as a structure in which the position of the second cylinder device 42 is restrained and locked. 8 shows a structure for reducing or eliminating the driving force of the second cylinder device 41, it may be applied as a structure for reducing or eliminating the driving force of the first cylinder device 41. The lower plate 13 as a movable body rotates, but it may be a linear motion alone or a combination of rotation and linear motion. The first drive source to the seventh drive source may be electric motor devices instead of the first cylinder device 41 to the seventh cylinder device 47. In particular, an electric motor device can be used in place of the fifth cylinder device 45 which is an expansion / contraction drive source. The following technical idea can also be grasped from the description of this specification.

  [Additional Item 1] The injection nozzle is connected to the molten metal passage port of the movable body on the bottom side of the hot water storage container so that the injection nozzle for allowing the molten metal in the hot water storage container for storing the molten metal to communicate therewith is connected to the movable body. An injection nozzle mounting device for mounting around a molten metal passage opening, wherein the fixed base, a first pivot shaft held by the fixed base, and the fixed base along the lateral direction by the first pivot shaft A first arm pivotably supported; a second pivot shaft held by the first arm; and a second arm pivotally supported by the second pivot shaft in a lateral direction. A third pivot shaft held by the second arm; and the third pivot shaft is pivotally supported by the third pivot shaft so as to be capable of moving up and down in the height direction with respect to the bottom side of the hot water storage container. A third arm attached to the first pivot, and the first pivot A first drive source for turning the first arm in the lateral direction with an axis as a turning center, and a second drive source for turning the second arm in the lateral direction with the second pivot shaft as a turning center And a third drive source for raising and lowering the third arm in the height direction with respect to the bottom side of the hot water storage container and pressing the upper portion of the injection nozzle against the periphery of the molten metal passage when the ascending. An injection nozzle mounting device characterized by the above.

  10 is a ladle (hot water storage container), 12 is an upper plate, 13 is a lower plate (movable body), 14 is a molten steel passage (molten passage), 15 is a tundish, 17 is a mold, 18 is a long nozzle (injection nozzle) ), 19 is a plate driving source, 2 is an injection nozzle mounting device, 20 is a fixed base, 21 is a first pivot shaft, 22 is a second pivot shaft, 23 is a third pivot shaft, 31 is a first arm, 32 is a second arm, 33 is a third arm, 330 is an arm body, 322 is a sub-arm, 34 is a rotating portion, 41 is a first cylinder device (first drive source), and 42 is a second cylinder device (second Drive source), 43 is a third cylinder device (third drive source), 44 is a fourth cylinder device (fourth drive source), 45 is a fifth cylinder device (extension / contraction drive source, fifth drive source), and 46 is a first cylinder device. 6 cylinder device (sixth drive source), 47 is the seventh cylinder device (seventh drive) (Source), 5 is a first restraining means, 51 is a first guide part, 52 is a first movable body, 53 is a locking part, 52a is a locked part, 53 is a locking part, 53a is a wedge projection, 8 is The second restraining means, 91 is a second guide part, 92 is a second movable body, and 926 and 927 are stoppers.

Claims (6)

The injection nozzle is placed around the molten metal passage opening of the movable body so that the injection nozzle that allows the molten metal in the hot water storage container for storing the molten metal to communicate with the molten metal passage opening of the movable body on the bottom side of the hot water storage container. An injection nozzle mounting device for mounting,
A fixed base; a first pivot shaft held by the fixed base; a first arm pivotally supported by the first pivot shaft so as to be pivotable with respect to the fixed base along a lateral direction; A second pivot shaft held by one arm, a second arm pivotally supported by the second pivot shaft so as to be pivotable in the lateral direction, and a third pivot shaft held by the second arm. A third arm pivotally supported by the third pivot shaft so as to be capable of moving up and down in the height direction with respect to the bottom side of the hot water storage container, and the injection nozzle being directly or indirectly attached thereto, and the first pivot support A first drive source for turning the first arm in the lateral direction with an axis as a turning center, and a second drive source for turning the second arm in the lateral direction with the second pivot shaft as a turning center Elevating the third arm in the height direction with respect to the bottom side of the hot water storage container Thereby, the upper portion of the injection nozzle is provided with a third drive source for pressing on said peripheral molten metal passage opening of the movable body at the time of rising,
The injection nozzle mounting device is, at the time of mounting the injection nozzle,
(I) When the injection nozzle is brought close to the melt passage port of the movable body, the driving force of the first driving source and the second driving source is transmitted to the first arm and the second arm, and the first A driving configuration in which the injection arm of the third arm is brought close to the melt passage port of the movable body by driving and turning the first arm and the second arm with the driving force of the one driving source and the second driving source. When,
(Ii) When the movable body is driven together with the injection nozzle, driving force transmission from the first drive source and the second drive source to the first arm and the second arm is reduced or eliminated, and the movable body is The injection nozzle mounting device is characterized in that it can be switched to a driven form in which the first arm and the second arm can be driven and swiveled with a driving force. In Claim 1, at least one of said 1st arm, said 2nd arm, and said 3rd arm can be expanded and contracted in its own length direction,
An injection nozzle mounting device is provided, wherein an extension drive source for extending and retracting the extendable arm when the first arm and / or the second arm is turned is provided. 3. The injection nozzle mounting device according to claim 1, wherein, in the drive mode of (i), the position of the first drive source or the second drive source is constrained to a fixed state by a restraining means, and the first Driving one drive source and the second drive source to drive and turn the first arm and / or the second arm;
In the driven form of (ii), the fixed state of the first drive source or the second drive source is released by releasing the restraint of the restraining means, and the first arm and the second arm are in a free state. And an injection nozzle mounting device that allows the first arm and the second arm to be driven by the driving force of the movable body.   4. The first drive source according to claim 3, wherein the restraining means includes a first guide portion extending in a predetermined direction, a movable portion along the first guide portion, and a concave or convex locked portion. And a first movable body having a connector coupled to one of the second drive sources, and a convex or concave shape that is releasably locked to the locked portion of the first movable body. And a fourth drive source that moves the locking portion in the engagement direction and the disengagement direction, and when the fourth drive source moves in the disengagement direction, The injection nozzle mounting device, wherein the engagement with the locking portion is released, and one of the first drive source and the second drive source is in a free state. 5. The driving mechanism according to claim 3, wherein the restraining means is configured to rotate the first arm and the second arm in the driving mode (i), of the first driving source and the second driving source. One driving force is transmitted to the first arm or the second arm,
In the driven form of (ii), when the first arm and the second arm are driven to turn, the driving force of one of the first driving source and the second driving source is applied to the first arm or the second arm. An injection nozzle mounting device characterized in that it is not transmitted to two arms. 5. The restraint means according to claim 3 or 4, wherein the restraining means is fixed to the first arm or the second arm and extends in a predetermined direction, and is held by the first arm or the second arm. A second movable body movable along the guide portion; a sixth drive source having a pressing portion capable of moving forward and backward to prevent linear movement in one direction of the second movable body; and the other direction of the second movable body And a seventh drive source having a pressing part capable of moving forward and backward to prevent the straight movement of
When the movement of the sixth drive source and the seventh drive source prevents the second movable body from moving in one direction and moving in the other direction, the second movable body moves to the second guide portion. Cannot be moved along the first arm or the second arm.
When the sixth drive source and the seventh drive source reversely move, the second movable body is allowed to move to the second guide portion when the second movable body is allowed to move in one direction and in the other direction. An injection nozzle mounting device, wherein the injection nozzle mounting device is movable along the first arm or the second arm.

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