Arc alignment auxiliary device for square billet crystallizer

Abstract

The invention provides an arc alignment auxiliary device for a square billet crystallizer, and relates to the technical field of continuous casting equipment. The arc alignment auxiliary device for the square billet crystallizer comprises an arc plate, an adjusting mechanism and a transmission mechanism. The number of the arc plates is multiple. The adjusting mechanism is used for being arranged in the metal pipe. The transmission mechanisms are connected with the adjusting mechanism and the arc plate, and the number of the transmission mechanisms is multiple; the number of the arc plates and the number of the transmission mechanisms are the same as the number of the inner walls of the metal pipe or the number of the foot rollers, and the adjusting mechanisms are used for driving the multiple adjusting mechanisms to be close to or away from the adjusting rod so as to drive the multiple arc plates to be attached to the multiple inner walls of the metal pipe and the multiple foot rollers one to one. Therefore, the working efficiency and the working quality are improved, the repeated labor of operators is avoided, and the measurement and adjustment precision is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of continuous casting equipment, and in particular to an arc-aligning auxiliary device for a square billet crystallizer. Background Art

[0002] In the continuous casting equipment, when the high-temperature molten steel passes through the curved copper tube of the tubular curved crystallizer, it is cooled by heat exchange, so that the surface of the molten steel gradually solidifies into a cast billet. The side walls of the cast billet are supported by several arc-shaped foot rollers at the outlet of the arc-shaped copper tube to ensure that the cast billet moves along the predetermined arc trajectory to avoid cracking and steel leakage caused by internal static pressure. Subsequently, the cast billet is further solidified and finally forms a finished cast billet with a specific cross-sectional shape and size specifications. Therefore, during the maintenance of the continuous casting crystallizer, an arc alignment device is required to assist the arc installation of several foot rollers.

[0003] However, the existing arc alignment device has a complicated installation structure and operation, and the arc wall and the inner wall of the copper tube lack effective fixing measures, which makes it difficult for the two to fit tightly. In addition, when using a feeler gauge to measure the gap between the foot roller and the arc alignment template, it is easy to cause the arc alignment template to shift, thereby affecting the accuracy of the measurement results. These problems all lead to the inability to effectively guarantee the arc alignment accuracy. Summary of the invention

[0004] The invention provides a square billet crystallizer arc-aligning auxiliary device, which can make the arc plate still fit closely to the inner wall of the metal tube, so as to ensure the measurement and adjustment accuracy.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present invention provides a billet crystallizer arc-aligning auxiliary device, which is used to be arranged between multiple inner walls of a metal tube and multiple foot rollers, and the billet crystallizer arc-aligning auxiliary device comprises:

[0007] Arc plates, the number of the arc plates is multiple;

[0008] An adjusting mechanism, the adjusting mechanism is used to be arranged inside the metal tube;

[0009] A transmission mechanism, the transmission mechanism is connected to the adjustment mechanism and to the arc plate, and the number of the transmission mechanisms is multiple;

[0010] Among them, the number of the arc plates and the transmission mechanisms are the same as the number of the inner walls of the metal tube or the foot rollers, and the adjustment mechanism is used to drive multiple adjustment mechanisms to approach or move away from the adjustment mechanism, so as to drive multiple arc plates to fit one by one with multiple inner walls of the metal tube and multiple foot rollers respectively.

[0011] In an optional embodiment, the adjustment mechanism includes an adjustment rod and an adjustment member, the adjustment rod is used to be arranged inside the metal tube, the adjustment member can be movably arranged on the adjustment rod, at least one end of the transmission mechanism is movably connected to the adjustment member, and the other end is movably connected to the arc plate.

[0012] In an optional embodiment, the adjustment mechanism further includes a fixing member and an elastic member, wherein the fixing member is disposed at one end of the adjustment rod, one end of the elastic member is connected to the fixing member, and the other end of the elastic member is connected to the adjustment member.

[0013] In an optional embodiment, the adjusting member includes an adjusting nut and a support sleeve, the adjusting nut is threadedly engaged with the adjusting rod, the support sleeve is slidably disposed on the adjusting rod, one end of the elastic member is connected to the fixing member, and the other end is connected to the support sleeve, and at least one end of the transmission mechanism is movably connected to the support sleeve.

[0014] In an optional embodiment, the transmission mechanism includes a differential screw, one end of which is movably connected to the adjusting member, and the other end of which is movably connected to the arc plate, and the differential screw is used to extend or shorten to drive the arc plate closer to or away from the adjusting mechanism.

[0015] In an optional embodiment, the differential screw member includes a first connecting rod, an adjusting rod, and a second connecting rod connected in sequence, the first connecting rod is movably connected to the adjusting member, the second connecting rod is movably connected to the arc plate, the first connecting rod and the second connecting rod are both threadedly connected to the adjusting rod, and the adjusting rod is used to rotate under the action of external force to drive the first connecting rod and the second connecting rod to move relative to or away from each other.

[0016] In an optional embodiment, the transmission mechanism further includes a transmission connecting rod, one end of which is movably connected to the adjusting rod, and the other end of which is movably connected to the arc plate, and one end of the differential screw member away from the adjusting member is movably connected to the transmission connecting rod.

[0017] In an optional embodiment, the transmission mechanism further includes a mounting member and a fastener, the mounting member is provided with a mounting groove, the arc plate is embedded in the mounting groove and fixed by the fastener, and the transmission connecting rod is movably connected to the mounting member.

[0018] In an optional embodiment, the square billet crystallizer arc auxiliary device also includes an adjusting eccentric shaft, and the adjusting eccentric shaft is arranged on the foot roller to drive the foot roller to move.

[0019] In an optional embodiment, the square billet crystallizer arc auxiliary device also includes a crystallizer, and the crystallizer is used to be arranged outside the metal tube.

[0020] The beneficial effects of the square billet crystallizer arc auxiliary device provided by the embodiment of the present invention include: the adjustment mechanism can simultaneously drive multiple adjustment mechanisms to move, so that the multiple arc plates can be driven by the multiple adjustment mechanisms to fit seamlessly and tightly with the multiple inner walls of the metal tube one by one, and fit with the multiple foot rollers one by one. Compared with the cumbersome method of measuring and adjusting in each direction adopted in the existing device, the work efficiency and work quality are greatly improved, and the repetitive work of the operators is avoided; when the arc plate fits with the inner wall of the metal tube, even if the multiple arc plates are measured in turn by a feeler gauge, or the foot roller is further adjusted, the transmission mechanism can make the arc plate still fit tightly with the inner wall of the metal tube under the action of the adjustment mechanism, thereby ensuring the measurement and adjustment accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A schematic structural diagram of a first-viewing angle of view of a billet crystallizer arc-alignment auxiliary device provided in an embodiment of the present invention;

[0023] Figure 2 A schematic structural diagram from a second perspective of the billet crystallizer arc-alignment auxiliary device provided in an embodiment of the present invention.

[0024] Icons: 10-square billet crystallizer arc auxiliary device; 100-arc plate; 200-adjustment mechanism; 210-adjustment rod; 220-adjustment member; 221-adjustment nut; 222-support sleeve; 230-fixing member; 240-elastic member; 300-transmission mechanism; 310-differential screw member; 311-first connecting rod; 312-adjustment connecting rod; 313-second connecting rod; 314-transmission connecting rod; 315-mounting member; 316-fastener; 400-adjustment eccentric shaft; 500-crystallizer; 11-metal tube; 12-foot roller. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0030] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0031] In the continuous casting equipment, when the high-temperature molten steel passes through the curved copper tube of the tubular curved crystallizer, it is cooled by heat exchange, so that the surface of the molten steel gradually solidifies into a cast billet. The side walls of the cast billet are supported by several arc-shaped foot rollers at the outlet of the arc-shaped copper tube to ensure that the cast billet moves along the predetermined arc trajectory to avoid cracking and steel leakage caused by internal static pressure. Subsequently, the cast billet is further solidified and finally forms a finished cast billet with a specific cross-sectional shape and size specifications. Therefore, during the maintenance of the continuous casting crystallizer, an arc alignment device is required to assist the arc installation of several foot rollers.

[0032] However, the existing arc alignment device has a complicated installation structure and operation, and the arc wall and the inner wall of the copper tube lack effective fixing measures, which makes it difficult for the two to fit tightly. In addition, when using a feeler gauge to measure the gap between the foot roller and the arc alignment template, it is easy to cause the arc alignment template to shift, thereby affecting the accuracy of the measurement results. These problems all lead to the inability to effectively guarantee the arc alignment accuracy.

[0033] Based on the above questions, please refer to Figure 1 and Figure 2The embodiment of the present invention provides a billet crystallizer arc-alignment auxiliary device 10, which has a simple structure and can complete the measurement and arc-alignment of the crystallizer 500 in a short time, which not only ensures the accuracy of measurement and adjustment, but also effectively improves work efficiency and work quality.

[0034] It should be noted that the square billet crystallizer arc auxiliary device 10 is used to be set between multiple inner walls of the metal tube 11 and multiple foot rollers 12. The number of inner walls of the metal tube 11 is the same as the number of foot rollers 12, and multiple foot rollers 12 are set at the end of the metal tube 11.

[0035] It is understandable that in the art, the metal tube 11 is usually a copper tube. Of course, it can also be other metal tubes 11, which are not specifically limited here.

[0036] In detail, the billet crystallizer arc auxiliary device 10 includes an arc plate 100 , an adjustment mechanism 200 and a transmission mechanism 300 .

[0037] The arc plate 100 is used to be arranged on the inner wall of the metal tube 11 ; the adjustment mechanism 200 is arranged inside the metal tube 11 ; the transmission mechanism 300 is connected to the adjustment mechanism 200 , and is also connected to the arc plate 100 .

[0038] In this embodiment, the number of foot rollers 12, arc plates 100 and transmission mechanisms 300 are all multiple and the same as the number of inner walls of the metal tube 11. The adjustment mechanism 200 is used to drive the multiple adjustment mechanisms 200 to approach or move away from the adjustment mechanism 200, so as to drive the multiple arc plates 100 to fit one by one with the multiple inner walls of the metal tube 11 or the multiple foot rollers 12 respectively.

[0039] Therefore, the adjusting mechanism 200 can simultaneously drive multiple adjusting mechanisms 200 to move, so that the multiple arc plates 100 can be driven by the multiple adjusting mechanisms 200 to fit seamlessly and tightly with the multiple inner walls of the metal tube 11 one by one, and fit with the multiple foot rollers 12 one by one. Compared with the cumbersome method of measuring and adjusting in each direction adopted in the existing device, the work efficiency and work quality are greatly improved, and the repetitive work of the operators is avoided; when the arc plate 100 fits with the inner wall of the metal tube 11, even if the multiple arc plates 100 are measured in turn by a feeler gauge, or the foot roller 12 is further adjusted, the transmission mechanism 300, under the action of the adjusting mechanism 200, enables the arc plate 100 to still fit tightly against the inner wall of the metal tube 11, thereby ensuring the measurement and adjustment accuracy.

[0040] Optionally, since the metal tube 11 is square and has four inner walls, the number of the foot roller 12, the arc plate 100 and the transmission mechanism 300 are all four.

[0041] Furthermore, the adjustment mechanism 200 includes an adjustment rod 210 and an adjustment member 220. The adjustment rod 210 is arranged inside the metal tube 11. The adjustment member 220 can be movably arranged on the adjustment rod 210. At least one end of the transmission mechanism 300 is movably connected to the adjustment member 220, and the other end is movably connected to the arc plate 100.

[0042] In this embodiment, the adjusting rod 210 is arranged parallel to the inside of the metal tube 11, and the adjusting member 220 can slide along the length direction of the adjusting rod 210, and one end of the transmission mechanism 300 is hinged to the adjusting member 220, and the other end is hinged to the arc plate 100. Therefore, by driving the adjusting member 220 to slide along the adjusting rod 210, the transmission mechanism 300 can be driven to rotate relative to the adjusting rod 210, thereby finally driving the arc plate 100 to approach or move away from the inner wall of the metal tube 11, so as to achieve a close fit between the arc plate 100 and the inner wall of the metal tube 11.

[0043] It is understandable that since there are multiple adjustment mechanisms 200, all of which are hinged to the adjustment member 220, multiple arc plates 100 can be adjusted simultaneously, effectively reducing the number of manual measurements and arc alignments, while also ensuring the accuracy of measurement and adjustment.

[0044] Furthermore, the adjustment mechanism 200 further includes a fixing member 230 and an elastic member 240 . The fixing member 230 is disposed at one end of the adjustment rod 210 . One end of the elastic member 240 is connected to the fixing member 230 , and the other end is connected to the adjustment member 220 .

[0045] In this embodiment, an elastic member 240 is provided and placed in a stretched state so that the elastic restoring force of the elastic member 240 acts on the adjusting member 220, causing the adjusting member 220 to tend to move toward the fixing member 230, thereby causing the transmission mechanism 300 to always press the arc plate 100, further causing the arc plate 100 to fit tightly against the inner wall of the metal tube 11.

[0046] Furthermore, the adjusting member 220 includes an adjusting nut 221 and a support sleeve 222. The adjusting nut 221 is threadedly matched with the adjusting rod 210. The support sleeve 222 can be slidably arranged on the adjusting rod 210. One end of the elastic member 240 is connected to the fixing member 230, and the other end is connected to the support sleeve 222. At least one end of the transmission mechanism 300 is movably connected to the support sleeve 222.

[0047] In this embodiment, the adjusting nut 221 is threadably matched with the adjusting rod 210 , so that the supporting sleeve 222 can be driven to slide along the horizontal extension direction of the adjusting rod 210 by simply screwing the adjusting nut 221 , thereby driving the transmission mechanism 300 to move.

[0048] It should be noted that, in this embodiment, the adjusting nut 221 and the supporting sleeve 222 are two parts, and in order to ensure that the supporting sleeve 222 always contacts the adjusting nut 221, the elastic member 240 can also be in a compressed state to ensure that the supporting sleeve 222 is tightly connected to the adjusting nut 221 under the action of the elastic member 240. In other words, the elastic member 240 can be set to a compressed state or a stretched state according to the use requirements, which is not specifically limited here.

[0049] Furthermore, the transmission mechanism 300 is a structure that can be extended or shortened to drive the arc plate 100 to move closer to or away from the adjustment mechanism 200 .

[0050] Since multiple transmission mechanisms 300 synchronously drive the arc plate 100 to approach or move away from the inner wall of the metal tube 11 under the drive of the adjusting nut 221, it is possible that one or more of the arc plates 100 connected to the transmission mechanism 300 are tightly fitted against the inner wall of the metal tube 11, while another one or more of the arc plates 100 connected to the transmission mechanism 300 have a gap with the inner wall of the metal tube 11. Therefore, in this case, it is only necessary to further extend the transmission mechanism 300 until the arc plate 100 is fitted against the inner wall of the metal tube 11.

[0051] In this embodiment, the transmission mechanism 300 includes a differential screw 310, one end of the differential screw 310 is movably connected to the adjustment member 220, and the other end is movably connected to the arc plate 100. The differential screw 310 is used to extend or shorten to drive the arc plate 100 to move closer to or away from the adjustment mechanism 200.

[0052] Furthermore, the differential screw member 310 includes a first connecting rod 311, an adjusting connecting rod 312 and a second connecting rod 313 connected in sequence, the first connecting rod 311 is movably connected to the adjusting member 220, the second connecting rod 313 is movably connected to the arc plate 100, the first connecting rod 311 and the second connecting rod 313 are both threadedly connected to the adjusting connecting rod 312, and the adjusting connecting rod 312 is used to rotate under the action of external force to drive the first connecting rod 311 and the second connecting rod 313 to move relative to or opposite to each other.

[0053] In this embodiment, the first connecting rod 311 and the second connecting rod 313 are driven to move relative to each other by screwing the adjusting connecting rod 312, so as to extend or shorten the differential screw 310, thereby achieving a very tight position adjustment of the arc plate 100, ensuring that the arc plate 100 fits tightly against the inner wall of the metal tube 11, while also ensuring the accuracy of measurement and adjustment.

[0054] It is understood that the pitch or thread of the first connecting rod 311 is different from the pitch or thread of the second connecting rod 313.

[0055] Furthermore, the transmission mechanism 300 also includes a transmission connecting rod 314, one end of which is movably connected to the adjustment rod 210, and the other end is movably connected to the arc plate 100, and one end of the differential screw member 310 away from the adjustment member 220 is movably connected to the transmission connecting rod 314.

[0056] In this embodiment, the connection relationship between the transmission connecting rod 314, the adjustment rod 210, the differential screw 310 and the arc plate 100 is hinged. The transmission connecting rod 314, the differential screw 310 and the adjustment rod 210 form a triangular connecting rod mechanism, which can increase or decrease the height of the triangle formed by the adjustment rod 210, the differential screw 310 and the transmission connecting rod 314 by driving the adjustment member 220 to slide along the horizontal extension direction of the adjustment rod 210, so that the transmission connecting rod 314 finally drives the arc plate 100 to approach or move away from the inner wall of the metal tube 11.

[0057] In order to ensure that the transmission mechanism 300 is stably connected to the arc plate 100 , the transmission mechanism 300 also includes a mounting member 315 and a fastener 316 . The mounting member 315 is provided with a mounting groove. The arc plate 100 is embedded in the mounting groove and fixed by the fastener 316 . The transmission connecting rod 314 is movably connected to the mounting member 315 .

[0058] In this embodiment, the arc plate 100 is embedded in the installation groove and fixed in the installation groove by the fastener 316, so as to lock the arc plate 100 and prevent the arc plate 100 from loosening or falling off in the installation groove.

[0059] Furthermore, the billet crystallizer arc auxiliary device 10 also includes an adjusting eccentric shaft 400, and the adjusting eccentric shaft 400 is arranged on the foot roller 12 to drive the foot roller 12 to move.

[0060] When the arc plate 100 is in contact with the inner wall of the metal tube 11, the contact positions of multiple arc plates 100 and multiple foot rollers 12 can be measured using a feeler gauge. If the measured data cannot reach the preset range, the position of the foot roller 12 can be adjusted by adjusting the eccentric shaft 400 to facilitate the measurement of the point position of the arc plate 100 until the measured data reaches the preset range.

[0061] Furthermore, the billet crystallizer arc auxiliary device 10 also includes a crystallizer 500 , which is arranged outside the metal tube 11 .

[0062] In summary, an embodiment of the present invention provides a square billet crystallizer arc auxiliary device 10, which can simultaneously drive multiple adjustment mechanisms 200 to move through the adjustment mechanism 200, so that multiple arc plates 100 can be driven by the multiple adjustment mechanisms 200 to fit seamlessly and tightly with multiple inner walls of the metal tube 11 one by one, and fit with multiple foot rollers 12 one by one. Compared with the cumbersome method of measuring and adjusting in each direction adopted in the existing device, the work efficiency and work quality are greatly improved, and the repetitive work of the operator is avoided; when the arc plate 100 fits with the inner wall of the metal tube 11, even if the multiple arc plates 100 are measured in turn by a feeler gauge, or the foot roller 12 is further adjusted, the transmission mechanism 300, under the action of the adjustment mechanism 200, enables the arc plate 100 to still fit tightly against the inner wall of the metal tube 11, thereby ensuring the measurement and adjustment accuracy.

[0063] It can be seen that the square billet crystallizer arc-aligning auxiliary device 10 provided in the embodiment of the present invention also has the following advantages: it is relatively safe and reliable for both personnel and equipment during implementation; the entire operation is simple and efficient; it can not only meet the maintenance needs of the offline crystallizer 500, but also perform real-time measurement and arc alignment on the online crystallizer 500, thereby meeting the requirements of real-time production, which means that there is no need to stop the machine for adjustment during the production process, greatly reducing the labor intensity of the operator; through optimized contact methods and precise adjustment mechanisms, the friction of the equipment is greatly reduced, such as the surface of the foot roller 12, the surface of the metal tube 11, etc., to ensure the accuracy of the equipment; in addition, the device needs to rely on electricity or other energy media to drive, and its design is based on mechanical principles and the use of natural forces, so that it can be used continuously for a long time without the need for personnel maintenance; this solution can fully realize the standardization of the maintenance process through skilled operation, and provide guarantees for the consistency and reliability of the entire production line.

[0064] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A billet crystallizer arc auxiliary device, used to be arranged between multiple inner walls of a metal tube (11) and multiple foot rollers (12), characterized in that: The billet crystallizer arc auxiliary device comprises: Arc plates (100), the number of the arc plates (100) is multiple; an adjusting mechanism (200), the adjusting mechanism (200) being arranged inside the metal tube (11); a transmission mechanism (300), the transmission mechanism (300) being connected to the adjustment mechanism (200) and to the arc plate (100), and the number of the transmission mechanisms (300) being multiple; The number of the arc plates (100) and the transmission mechanism (300) is the same as the number of the inner walls of the metal tube (11) or the foot rollers (12), and the adjustment mechanism (200) is used to drive the plurality of adjustment mechanisms (200) to approach or move away from the adjustment mechanism (200), so as to drive the plurality of arc plates (100) to fit one by one with the plurality of inner walls of the metal tube (11) and the plurality of foot rollers (12).

2. The billet crystallizer arc auxiliary device according to claim 1, characterized in that: The adjusting mechanism (200) comprises an adjusting rod (210) and an adjusting member (220); the adjusting rod (210) is used to be arranged inside the metal tube (11); the adjusting member (220) is movably arranged on the adjusting rod (210); at least one end of the transmission mechanism (300) is movably connected to the adjusting member (220), and the other end is movably connected to the arc plate (100).

3. The billet crystallizer arc auxiliary device according to claim 2, characterized in that: The adjustment mechanism (200) further comprises a fixing member (230) and an elastic member (240), wherein the fixing member (230) is arranged at one end of the adjustment rod (210), and one end of the elastic member (240) is connected to the fixing member (230), and the other end is connected to the adjustment member (220).

4. The billet crystallizer arc auxiliary device according to claim 3 is characterized in that: The adjusting member (220) comprises an adjusting nut (221) and a supporting sleeve (222); the adjusting nut (221) is threadedly matched with the adjusting rod (210); the supporting sleeve (222) is slidably arranged on the adjusting rod (210); one end of the elastic member (240) is connected to the fixing member (230), and the other end is connected to the supporting sleeve (222); at least one end of the transmission mechanism (300) is movably connected to the supporting sleeve (222).

5. The billet crystallizer arc auxiliary device according to claim 2, characterized in that: The transmission mechanism (300) comprises a differential screw (310), one end of the differential screw (310) is movably connected to the adjustment member (220), and the other end is movably connected to the arc plate (100), and the differential screw (310) is used to extend or shorten to drive the arc plate (100) to approach or move away from the adjustment mechanism (200).

6. The billet mold arc auxiliary device according to claim 5, characterized in that: The differential screw member (310) includes a first connecting rod (311), an adjusting rod (210) and a second connecting rod (313) which are connected in sequence, wherein the first connecting rod (311) is movably connected to the adjusting member (220), and the second connecting rod (313) is movably connected to the arc plate (100), and the first connecting rod (311) and the second connecting rod (313) are both threadedly connected to the adjusting rod (210), and the adjusting rod (210) is used to rotate under the action of an external force to drive the first connecting rod (311) and the second connecting rod (313) to move relative to or away from each other.

7. The billet mold arc auxiliary device according to claim 5, characterized in that: The transmission mechanism (300) further comprises a transmission connecting rod (314), one end of which is movably connected to the adjusting rod (210), and the other end of which is movably connected to the arc plate (100); and one end of the differential screw member (310) away from the adjusting member (220) is movably connected to the transmission connecting rod (314).

8. The billet mold arc auxiliary device according to claim 7, characterized in that: The transmission mechanism (300) further comprises a mounting member (315) and a fastener (316); the mounting member (315) is provided with a mounting groove; the arc plate (100) is embedded in the mounting groove and fixed by the fastener (316); and the transmission connecting rod (314) is movably connected to the mounting member (315).

9. The billet crystallizer arc auxiliary device according to claim 1, characterized in that: The square billet crystallizer arc auxiliary device also includes an adjusting eccentric shaft (400), and the adjusting eccentric shaft (400) is arranged on the foot roller (12) and is used to drive the foot roller (12) to move.

10. The billet mold arc-aligning auxiliary device according to claim 1, characterized in that: The square billet crystallizer arc auxiliary device further comprises a crystallizer (500), and the crystallizer (500) is used to be arranged outside the metal tube (11).

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