Movable centering table for tundish nozzle

Abstract

The utility model belongs to the technical field of steelmaking equipment, and discloses a tundish nozzle movable centering table which can be coaxially and detachably connected with a water outlet of a tundish. The tundish nozzle movable centering table comprises a table base, a positioning column, a movable table, a fixed rocker, a movable table longitudinal adjusting piece and a movable table horizontal adjusting piece. Through the structural design of the centering table, accurate and tiny movement of the moving table can be realized, so that the coaxial accuracy of a tundish water outlet and a crystallizer water inlet is ensured. The accurate adjustment capability avoids the problem of inaccuracy caused by judgment depending on artificial experience in a traditional method.

Description

Technical Field

[0001] The utility model belongs to the field of steelmaking equipment, in particular to a movable centering platform for a tundish nozzle. Background Art

[0002] During the steelmaking process, a tundish is needed between the ladle and the mold to guide the molten steel. As a transitional container between the ladle and the mold, the accuracy of the tundish's position is crucial to the smooth operation of continuous casting.

[0003] During continuous casting, the molten steel contained in the tundish generally needs to be diverted, directed, and fed into the crystallizer through multiple outlets located at its bottom. When the molten steel contained in the tundish is fed into the crystallizer through its outlets, each outlet needs to be coaxially aligned with the upper and lower inlets of the crystallizer in the vertical direction. Furthermore, during continuous casting, it is currently required that the horizontal distances between the vertical axes of two adjacent crystallizers located below the multiple outlets of the same tundish be equal to ensure that the flow spacing between the two adjacent crystallizers is equal, thereby ensuring that the quality of the prepared steel billet meets the use requirements. If the tundish outlet and crystallizer cannot be coaxially aligned, the outer surface of the prepared steel billet will be unevenly thick, making it prone to a series of problems such as steel leakage, thereby adversely affecting the quality of the steel billet.

[0004] Therefore, during the preparation process of the tundish, it is necessary to strictly ensure the accuracy of the installation positions of its multiple water outlets so that it can ensure the coaxial matching arrangement of the multiple crystallizers arranged below it.

[0005] At present, in the installation process of multiple water outlets of traditional tundishes, most of the workers install the water outlets of the tundish in the tundish. Generally, the water outlets are visually observed to ensure that they are coaxially matched with the upper and lower parts of the crystallizer, that is, the water outlets are aligned with the upper and lower parts of the crystallizer. Whether the multiple water outlets are arranged in a straight line in the horizontal direction is verified by pulling a line. By pulling the line, the multiple water outlets are arranged in a straight line, and then the workers observe whether they are horizontal. After that, they use a measuring ruler to compare and determine whether the spacing between the multiple water outlets is appropriate and evenly distributed. This traditional alignment method relies heavily on manual operation and experience, which not only increases labor intensity, but also lacks precise detection and adjustment methods, which easily leads to difficulties in ensuring the accuracy of alignment. For example, in some cases it takes up to 1 hour to center the tundish water outlet, and the accuracy of the alignment is also difficult to guarantee.

[0006] Therefore, one or more new related devices or equipment are needed to improve the accuracy of the continuous casting tundish nozzle centering process and reduce the time consumed in the centering process. Summary of the Invention

[0007] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a movable centering platform for a tundish nozzle.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A movable centering platform for a tundish outlet, the platform being coaxially and detachably connected to the outlet of the tundish, comprising a base, a positioning column, a movable platform, a fixed rocker, a longitudinal adjustment member for the movable platform, and a horizontal adjustment member for the movable platform. The base is arranged horizontally and has a groove therein. The top of the groove extends upwardly and is arranged on the upper surface of the base and is open.

[0010] A slide is provided at the bottom of the groove of the pedestal, and a movable platform is provided above the slide in a sliding connection, and the movable platform is spaced apart from the inner wall of the pedestal; the movable platform is arranged in the horizontal direction and is connected and arranged inside the groove of the pedestal, and a plurality of connecting columns are vertically fixed on the upper part of the movable platform, and the number of the connecting columns is equal to the number of the water outlets of the tundish, and the connecting columns are arranged in the vertical direction, and the horizontal distance between the vertical axes of two adjacent connecting columns is equal to the horizontal distance between the vertical axes of two adjacent crystallizers, and the plurality of connecting columns are all arranged on the same straight line in the horizontal direction and are evenly spaced apart in the horizontal direction;

[0011] The longitudinal adjustment member and the horizontal adjustment member of the mobile platform are both fixedly installed with the mobile platform, and are both connected to the base. The longitudinal adjustment member of the mobile platform can adjust the position of the mobile platform in the longitudinal direction, and the horizontal adjustment member of the mobile platform can adjust the position of the mobile platform in the horizontal direction;

[0012] The positioning column is arranged in the vertical direction and is coaxially connected to the connecting column in an upper and lower direction. The top of the positioning column is coaxially provided with a conical protrusion, which can be coaxially contacted with the water outlet of the tundish and detachably connected. The maximum diameter of the conical protrusion in the horizontal direction is larger than the diameter of the water outlet of the tundish in the horizontal direction. The middle and lower part of the positioning column is coaxially movable and is provided on the outer surface of the middle and upper part of the connecting column. The positioning column can slide up and down along the connecting column. A fixed rocker connecting sleeve is connected to the middle and lower part of the positioning column. The fixed rocker connecting sleeve is perpendicular to the positioning column, and the inner surface of the fixed rocker connecting sleeve is provided with an internal thread.

[0013] The fixed rocker is arranged in the horizontal direction, and the fixed rocker includes a connecting rod, a crank and a connecting end. The connecting rod is arranged in the horizontal direction, and the crank and the connecting end are respectively fixed on the horizontal ends of the connecting rod. An external thread is provided on the outer surface of the connecting end, and the external thread is matched with the internal thread of the fixed rocker connecting sleeve. The connecting end can be threadedly engaged with the fixed rocker connecting sleeve through its external thread and the internal thread of the fixed rocker connecting sleeve, and the connecting end arranged in the fixed rocker connecting sleeve can be arranged to be in contact with the connecting column.

[0014] Furthermore, a plurality of the movable platforms are evenly spaced and arranged in a horizontal direction, and two adjacent movable platforms are fixed together by two spacer guide pillars.

[0015] Furthermore, the slide is configured as a roller, and the roller is configured in plurality and is evenly spaced along the horizontal direction.

[0016] Furthermore, a first through hole is connected to one longitudinal side of the base, and the first through hole is arranged in the longitudinal direction. A second through hole is arranged on the horizontal side of the base, and the second through hole is arranged in the horizontal direction. Internal threads are provided on the inner surfaces of the second through hole and the first through hole.

[0017] The outer surface of the movable platform longitudinal adjustment member is connected to the inner surface of the first through hole by thread engagement. The outer surface of the movable platform longitudinal adjustment member is connected to the outer surface of the movable platform longitudinal adjustment member and the outer thread thereof matches the inner thread of the first through hole. The movable platform longitudinal adjustment member is installed together with the base through the outer thread thereof and the inner thread of the first through hole thread engagement.

[0018] The outer surface of the movable platform horizontal adjustment member is connected to the inner surface of the second through hole by thread engagement. The outer surface of the movable platform horizontal adjustment member is connected with an external thread, and its external thread is matched with the internal thread of the second through hole. The movable platform horizontal adjustment member is installed together with the base through its external thread and the internal thread of the second through hole.

[0019] The advantages and effects achieved by the utility model are:

[0020] 1. The platform's longitudinal and horizontal adjustment elements enable precise micro-movement of the centering platform, ensuring the coaxial accuracy of the tundish outlet and the mold inlet. Compared to traditional methods that rely on manual observation and wire drawing, this centering platform reduces errors caused by manual operation and empirical judgment.

[0021] 2. Workers can achieve centering through simple adjustment steps, greatly shortening the time required for the tedious wire drawing, observation, and measurement processes in traditional methods. This improves the efficiency of continuous casting production and reduces production delays caused by inaccurate nozzle centering.

[0022] 3. By replacing positioning columns of different sizes, the centering platform can adapt to the production needs of billets of different sizes and specifications. This improves the versatility and flexibility of the equipment, enabling it to respond to different process and production requirements.

[0023] 4. The fixed rocker makes vertical adjustment of the positioning column simple and convenient, reducing operator difficulty. The threaded connection enables precise adjustment of the movable platform, ensuring the required accuracy during the centering process. This reduces manual operation and labor intensity, improves production efficiency, and brings higher economic benefits to the company. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structural connection of the device of the utility model;

[0025] Figure 2 for Figure 1 A left-side cross-sectional diagram of the structural connection between the middle device and the water outlet of the tundish, and a cross-sectional diagram of the connection in use; DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with specific embodiments. The following embodiments are merely illustrative and non-restrictive, and should not be used to limit the scope of protection of the present invention.

[0027] The raw materials used in the present invention, unless otherwise specified, are all conventional commercial products. The methods used in the present invention, unless otherwise specified, are all conventional methods in the art. The quality of each substance used in the present invention is the quality of conventional use. The structures, connections, etc. not described in detail in the present invention are understood to be conventional technical means in the art.

[0028] A movable centering platform for the tundish nozzle, such as Figures 1 to 2 As shown, the centering platform can be detachably connected to the water outlet 9 of the tundish coaxially;

[0029] The movable centering platform for the tundish nozzle includes a base 1, a positioning column 2, a movable platform 3, a fixed rocker 4, a movable platform longitudinal adjustment member 5 and a movable platform horizontal adjustment member 6. The base is arranged in the horizontal direction and has a groove (not numbered in the figure) provided therein. The top of the groove extends upward and is provided on the upper surface of the base and is open.

[0030] A slide 8 is provided at the bottom of the groove of the pedestal, and a movable platform is provided above the slide for sliding connection, and the movable platform is spaced apart from the inner wall of the pedestal; the movable platform is arranged in the horizontal direction and is connected and arranged inside the groove of the pedestal, and a plurality of connecting columns 31 are vertically fixed on the upper part of the movable platform, and the number of connecting columns is equal to the number of water outlets of the tundish, and the connecting columns are arranged in the vertical direction, and the horizontal distance between the vertical axes of two adjacent connecting columns is equal to the horizontal distance between the vertical axes of two adjacent crystallizers. The arrangement of this structure ensures that the multiple water outlets of the tundish can meet the subsequent use requirements of multiple crystallizers after they are centered, and the multiple connecting columns are all arranged on the same straight line in the horizontal direction and are evenly spaced and arranged in the horizontal direction. The arrangement of this structure ensures that the multiple water outlets of the tundish can meet the subsequent use requirements of multiple crystallizers after they are centered.

[0031] The longitudinal adjustment member and the horizontal adjustment member of the mobile platform are both fixedly installed with the mobile platform, and are both connected to the base. The longitudinal adjustment member of the mobile platform can adjust the longitudinal position of the mobile platform, and the horizontal adjustment member of the mobile platform can adjust the horizontal position of the mobile platform. The longitudinal adjustment member and the horizontal adjustment member of the mobile platform can adjust the longitudinal front-back and horizontal left-right positions of the mobile platform according to actual needs, so as to meet the use needs and expand the scope of use.

[0032] The positioning column is arranged in the vertical direction and is coaxially connected to the connecting column up and down. The top of the positioning column is coaxially provided with a conical protrusion 21. The conical protrusion can be coaxially contacted with the water outlet of the tundish and detachably connected. The maximum diameter of the conical protrusion in the horizontal direction is larger than the diameter of the water outlet of the tundish in the horizontal direction, so that the conical protrusion can be pressed against the water outlet of the tundish, thereby facilitating subsequent operations. The coaxial movable sleeve of the middle and lower part of the positioning column is arranged on the outer surface of the middle and upper part of the connecting column, and the positioning column can slide up and down along the connecting column. A fixed rocker connecting sleeve 22 is connected to the middle and lower part of the positioning column. The fixed rocker connecting sleeve is arranged perpendicular to the positioning column, and the inner surface of the fixed rocker connecting sleeve is provided with an internal thread.

[0033] The fixed rocker is arranged in the horizontal direction, and the fixed rocker includes a connecting rod 42, a crank handle 41 and a connecting end 43. The connecting rod is arranged in the horizontal direction, and the crank handle and the connecting end are respectively fixedly arranged at the horizontal ends of the connecting rod. An external thread is arranged on the outer surface of the connecting end, and the external thread is matched with the internal thread of the fixed rocker connecting sleeve. The connecting end can be threadedly engaged with the fixed rocker connecting sleeve through its external thread and the internal thread of the fixed rocker connecting sleeve, and the connecting end arranged in the fixed rocker connecting sleeve can be arranged in contact with the connecting column directly, so that the staff can adjust the position of the rocker by the crank handle during use. By shaking the connecting rod and the connecting end, the connecting end can move forward through the internal thread and the external thread, and then move toward the direction of the connecting column, and finally be tightly contacted with the connecting column. Therefore, during use, the operator first shakes the fixed rocker in the direction away from the connecting column. When the fixed rocker is not in contact with the connecting column, manually move the positioning column up and down. After the position of the positioning column is adjusted, shake the fixed rocker in the direction close to the connecting column until the fixed rocker is pressed against the connecting column. The upper and lower positions of the positioning column can be fixed by the fixed rocker, and the adjustment is simple and convenient.

[0034] When the present invention is in use, the centering platform is set below the multiple water outlets of the tundish, and the positioning column of the centering platform is set directly below the water outlet of the tundish. Then, by loosening the fixing rocker, the outermost positioning column of the movable platform is lifted upward until the conical protrusion of the positioning column contacts the water outlet of the tundish directly above it. Then, by tightening the fixing rocker, the position of the positioning column is fixed, and the water outlet of the tundish is then centered. When the conical protrusion of the positioning column is coaxial with the water outlet of the tundish, the adjustment is completed. Then, the other outermost water outlet of the tundish is adjusted, and the longitudinal adjustment member and the horizontal adjustment member of the movable platform are adjusted so that the conical protrusion of the other outermost positioning column contacts the water outlet of the tundish directly above it. The adjustment is completed. After the water outlets on both sides are aligned, since the other water outlets of the centering platform are evenly spaced and set in a straight line, the water outlets of the remaining tundishes only need to be set and adjusted according to the positions of other positioning columns to complete the setting of the water outlets of the tundish. This greatly reduces the time spent by the staff on centering the water outlets of the tundish during work and greatly improves work efficiency.

[0035] The fixed rocker design simplifies and facilitates vertical adjustment of the positioning column, reducing operational complexity for operators. By replacing positioning columns of different sizes, the centering platform can adapt to the production needs of billets of varying sizes and specifications, improving the versatility and flexibility of the equipment. The provision of spacer guide columns enhances the scalability of the centering platform, enabling it to respond to diverse process and production requirements. Precise centering ensures stable flow of molten steel from the tundish to the crystallizer, avoiding unstable steel flow caused by nozzle position deviations. This reduces billet defects caused by inaccurate nozzle positioning and improves overall product quality.

[0036] In this embodiment, multiple movable platforms are evenly spaced and arranged in the horizontal direction, and two adjacent movable platforms are fixed together by two spacer guide pillars 7, which improves the expandability of the centering platform and the adaptability of the centering platform to meet different process requirements and production requirements.

[0037] In this embodiment, the slide is configured as a roller, and the rollers are configured in multiple numbers and are evenly spaced along the horizontal axis. The configuration of the rollers can reduce the friction force on the slide when the slide moves, greatly reducing the force required for the slide to move.

[0038] In this embodiment, a first through hole 51 is provided on one longitudinal side of the base, and the first through hole is provided along the longitudinal direction. A second through hole 61 is provided on the horizontal side of the base, and the second through hole is provided along the horizontal direction. Internal threads are provided on the inner surfaces of the second through hole and the first through hole.

[0039] The outer surface of the movable platform longitudinal adjustment member is connected to the inner surface of the first through hole by threaded engagement. The outer surface of the movable platform longitudinal adjustment member is connected to an external thread, and the external thread matches the internal thread of the first through hole. The movable platform longitudinal adjustment member is installed together with the base through its external thread and the internal thread of the first through hole. When in use, by adjusting the longitudinal front and rear position of the movable platform longitudinal adjustment member, the longitudinal front and rear position of the movable platform fixed thereto can be fine-tuned to meet the use requirements, which brings great convenience to the adjustment.

[0040] The outer surface of the movable platform horizontal adjustment member is connected to the inner surface of the second through hole by thread engagement. The outer surface of the movable platform horizontal adjustment member is connected with an external thread, and the external thread is matched with the internal thread of the second through hole. The movable platform horizontal adjustment member is installed together with the base thread engagement through its external thread and the internal thread of the second through hole. When in use, by adjusting the horizontal left and right position of the movable platform horizontal adjustment member, the horizontal left and right position of the movable platform fixed with it can be fine-tuned to meet the use requirements, which brings great convenience to the adjustment.

[0041] The present invention, through the structural design of the centering platform, can achieve precise micro-movement of the movable platform, thereby ensuring the coaxial accuracy of the water outlet of the tundish and the water inlet of the crystallizer. This precise adjustment capability avoids the inaccuracy caused by relying on manual experience and judgment in traditional methods. The use of threaded connections enables precise adjustment of the movable platform, ensuring the accuracy requirements during the centering process and improving the surface quality and internal quality of the product. After adopting the mobile centering platform, the staff only needs to perform simple adjustment steps to achieve centering, which greatly shortens the time required for the tedious processes of wire drawing, observation, and measurement in traditional methods.

[0042] Although the embodiments of the present invention are disclosed for illustrative purposes, those skilled in the art will understand that various replacements, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments.

Claims

1. A movable centering platform for a tundish nozzle, characterized by: The centering platform can be coaxially detachably connected to the water outlet of the tundish. The movable centering platform for the water outlet of the tundish includes a base, a positioning column, a movable platform, a fixed rocker, a longitudinal adjustment member of the movable platform, and a horizontal adjustment member of the movable platform. The base is arranged in the horizontal direction and has a groove arranged in the base. The top of the groove extends upward and is arranged on the upper surface of the base and is open. A slide is provided at the bottom of the groove of the pedestal, and a movable platform is provided above the slide in a sliding connection, and the movable platform is spaced apart from the inner wall of the pedestal; the movable platform is arranged in the horizontal direction and is connected and arranged inside the groove of the pedestal, and a plurality of connecting columns are vertically fixed on the upper part of the movable platform, and the number of the connecting columns is equal to the number of the water outlets of the tundish, and the connecting columns are arranged in the vertical direction, and the horizontal distance between the vertical axes of two adjacent connecting columns is equal to the horizontal distance between the vertical axes of two adjacent crystallizers, and the plurality of connecting columns are all arranged on the same straight line in the horizontal direction and are evenly spaced apart in the horizontal direction; The longitudinal adjustment member and the horizontal adjustment member of the mobile platform are both fixedly installed with the mobile platform, and are both connected to the base. The longitudinal adjustment member of the mobile platform can adjust the position of the mobile platform in the longitudinal direction, and the horizontal adjustment member of the mobile platform can adjust the position of the mobile platform in the horizontal direction; The positioning column is arranged in the vertical direction and is coaxially connected to the connecting column in an upper and lower direction. The top of the positioning column is coaxially provided with a conical protrusion, which can be coaxially contacted with the water outlet of the tundish and detachably connected. The maximum diameter of the conical protrusion in the horizontal direction is larger than the diameter of the water outlet of the tundish in the horizontal direction. The middle and lower part of the positioning column is coaxially movable and is provided on the outer surface of the middle and upper part of the connecting column. The positioning column can slide up and down along the connecting column. A fixed rocker connecting sleeve is connected to the middle and lower part of the positioning column. The fixed rocker connecting sleeve is perpendicular to the positioning column, and the inner surface of the fixed rocker connecting sleeve is provided with an internal thread. The fixed rocker is arranged in the horizontal direction, and the fixed rocker includes a connecting rod, a crank and a connecting end. The connecting rod is arranged in the horizontal direction, and the crank and the connecting end are respectively fixed on the horizontal ends of the connecting rod. An external thread is provided on the outer surface of the connecting end, and the external thread is matched with the internal thread of the fixed rocker connecting sleeve. The connecting end can be threadedly engaged with the fixed rocker connecting sleeve through its external thread and the internal thread of the fixed rocker connecting sleeve, and the connecting end arranged in the fixed rocker connecting sleeve can be arranged to be in contact with the connecting column.

2. The movable centering platform for the tundish nozzle according to claim 1, characterized in that: A plurality of movable platforms are evenly spaced and arranged at intervals along the horizontal direction, and two adjacent movable platforms are fixed together by two spacer guide pillars.

3. The movable centering platform for the tundish nozzle according to claim 1, characterized in that: The slide is configured as a roller, and the rollers are configured in plurality and are evenly spaced and arranged along the horizontal direction.

4. The movable centering platform for the tundish nozzle according to any one of claims 1 to 3, characterized in that: A first through hole is connected to one longitudinal side of the base, and the first through hole is arranged in the longitudinal direction. A second through hole is arranged on the horizontal side of the base, and the second through hole is arranged in the horizontal direction. Internal threads are provided on the inner surfaces of the second through hole and the first through hole; The outer surface of the movable platform longitudinal adjustment member is connected to the inner surface of the first through hole by thread engagement. The outer surface of the movable platform longitudinal adjustment member is connected to the outer surface of the movable platform longitudinal adjustment member and the outer thread thereof matches the inner thread of the first through hole. The movable platform longitudinal adjustment member is installed together with the base through the outer thread thereof and the inner thread of the first through hole thread engagement. The outer surface of the movable platform horizontal adjustment member is connected to the inner surface of the second through hole by thread engagement. The outer surface of the movable platform horizontal adjustment member is connected with an external thread, and its external thread is matched with the internal thread of the second through hole. The movable platform horizontal adjustment member is installed together with the base through its external thread and the internal thread of the second through hole.

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