A segmented roller type electromagnetic stirring traveling wave generating device

Abstract

The present application relates to slab continuous casting electromagnetic stirring technical field, especially in kind of a section roller type electromagnetic stirring traveling wave generating device. Including: traveling wave generating device 1, coupling ring and traveling wave generating device 2;Traveling wave generating device 1 and traveling wave generating device 2 are independent roller type electromagnetic stirring traveling wave generating device, and independent alternating power supply is used to generate independent traveling wave magnetic field;Traveling wave generating device 1 is provided with: protective sleeve 1, traveling wave generator 1, fixed end bearing device 1 and fixed end end cover group 1;Traveling wave generating device 2 is provided with: protective sleeve 2, traveling wave generator 2, fixed end bearing device 2 and fixed end end cover group 2;Fixed end end cover group 1 and fixed end end cover group 2 back-to-back coaxial adhesion and through the coupling ring fixed coupling traveling wave generating device 1 and traveling wave generating device 2 are connected into section roller type electromagnetic stirring traveling wave generating device.In the both ends of the present traveling wave generating device, cooling water chamber and terminal box are respectively arranged, and slab continuous casting section roller type electromagnetic stirring device is formed.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic stirring technology for slab continuous casting, and particularly to a segmented roller electromagnetic stirring traveling wave generator. Background Technology

[0002] In recent years, with the increasing demand for high-quality, thick steel plates in China, roller-type electromagnetic stirring devices have been widely used as equipment in slab continuous casting processes due to their excellent metallurgical effects in improving core segregation and enhancing equiaxed crystals, minimal modification to the continuous casting line, and ease of installation. However, the insufficient rigidity of roller-type electromagnetic stirring devices makes their use on thick slab continuous casting lines less than ideal. Existing technologies offer two solutions to address this rigidity issue: one is to add supporting rollers in the middle, but the limited contact area (wrap angle) sometimes fails to adequately improve rigidity; the other is to use a segmented electromagnetic stirring roller, mimicking a free roller installation method, but the large size of the middle segment in existing technologies creates a wide weak magnetic field region, affecting metallurgical performance. This invention provides a segmented roller-type electromagnetic stirring traveling wave generator that effectively solves the aforementioned application problems. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide a segmented roller-type electromagnetic stirring traveling wave generator. This device expands the axial space of the coil windings of the traveling wave magnetic field generator through a novel and compact fixed-end structure, while simultaneously reducing the weak magnetic field region at the fixed end. The core idea of ​​this invention is to form the intermediate support of the segmented roller-type electromagnetic stirring traveling wave generator by coaxially and back-to-back fixedly connecting the two fixed ends. This uniquely designed fixed-end structure shortens the axial structure of the intermediate segment, effectively reducing the weak magnetic field region and improving the metallurgical effect. The protective sleeve of this invention tightly integrates the roller sleeve with the end shaft, effectively expanding the winding space of the traveling wave generator. Positioning the end shaft of the protective sleeve at the fixed end as the intermediate support of the segmented roller-type electromagnetic stirring traveling wave generator further shortens the axial weak magnetic field region of the intermediate segment, significantly improving the metallurgical effect.

[0004] To achieve the innovative objectives of this invention, the following technical solutions can be used:

[0005] A segmented roller-type electromagnetic stirring traveling wave generator includes: a traveling wave generator 1, a connecting ring, and a traveling wave generator 2; the traveling wave generator 1 and the traveling wave generator 2 are completely independent roller-type electromagnetic stirring traveling wave generators, and can generate their own independent traveling wave magnetic fields using independent alternating power supplies; the traveling wave generator 1 is provided with: a protective sleeve 1, a traveling wave generator 1, a fixed end bearing device 1, and a fixed end cap assembly 1; the traveling wave generator 2 is provided with: a protective sleeve 2, a traveling wave generator 2, a fixed end bearing device 2, and a fixed end cap assembly 2; the fixed end cap assembly 1 and the fixed end cap assembly 2 are coaxially attached back to back and fixedly connected by inserting the connecting ring, thereby connecting the traveling wave generator 1 and the traveling wave generator 2 to form an integral segmented roller-type electromagnetic stirring traveling wave generator.

[0006] The traveling wave generator 1 has a fixed end 1 and a free end 1. The traveling wave generator 2 has a fixed end 2 and a free end 2. The fixed end 1 and the fixed end 2 are coaxially inserted back-to-back into the connecting ring, forming an intermediate support at the intermediate connection point. The fixed end cap assembly 1 has a fixed end cap 1 and an outer ball sleeve 1. The fixed end cap 1 has an inner spherical surface 1, and the outer ball sleeve 1 has an outer spherical surface 1. The outer spherical surface 1 and the inner spherical surface 1 engage so that the outer ball sleeve 1 is embedded in the fixed end cap 1, forming a ball joint 1 within a limited range and preventing the traveling wave from generating. The device 1 moves axially to form a fixed end 1; the fixed end cap assembly 2 is provided with a fixed end cap 2 and an outer ball sleeve 2, the fixed end cap 2 is provided with an inner spherical surface 2, the outer ball sleeve 2 is provided with an outer spherical surface 2, the outer spherical surface 2 and the inner spherical surface 2 engage so that the outer ball sleeve 2 is embedded in the fixed end cap 2 to form a ball joint 2 within a limited range and prevent the traveling wave generator 2 from moving axially to form a fixed end 2; the free end is provided at the two outer end supports, the free end allows the traveling wave generator to move to this end in a certain amount of extension and retraction, releasing the amount of extension and retraction of the traveling wave generator caused by temperature changes.

[0007] The fixed end cap assembly 1 includes: a fixed end cap 1 and an outer ball sleeve 1; the fixed end cap 1 has an inner spherical surface 1, an inner hole 1 and a keyway 1 at its central through hole, and the outer ball sleeve 1 has an outer spherical surface 1, a keyway 12, a cylindrical surface 1 and a countersunk hole 1; the cylindrical surface 1 is installed in the inner hole 1, and the outer spherical surface 1 and the inner spherical surface 1 engage so that the outer ball sleeve 1 is embedded in the fixed end cap 1 to form a ball joint 1 within a limited range; the ball joint 1 is tightly disposed at the central through hole of the fixed end cap 1, and the ball joint 1 is limited to a limited range.

[0008] The fixed end cap assembly 2 includes: a fixed end cap 2 and an outer ball sleeve 2; the fixed end cap 2 has an inner spherical surface 2, an inner hole 2 and a keyway 2 at its central through hole, and the outer ball sleeve 2 has an outer spherical surface 2, a keyway 22, a cylindrical surface 2 and a countersunk hole 2; the cylindrical surface 2 is installed in the inner hole 2, and the outer spherical surface 2 and the inner spherical surface 2 engage so that the outer ball sleeve 2 is embedded in the fixed end cap 2 to form a ball joint 2 within a limited range; the ball joint 2 is tightly disposed at the central through hole of the fixed end cap 2, and the ball joint 2 is limited to a limited range.

[0009] The traveling wave generator 1 is provided with: a lead wire group 1, a fixed end shaft head 1, and a fixed end keyway 1. The fixed end shaft head 1 is inserted into the countersunk hole 1 of the outer ball sleeve 1. The grooves of the fixed end keyway 1, the keyway 1, and the keyway 12 are aligned. A positioning key 1 is provided in the groove, which prevents the traveling wave generator 1 from rotating around its axis and moving axially. When the lead wire group 1 is connected to an alternating power supply, it can generate a traveling wave magnetic field for the traveling wave generator 1.

[0010] The traveling wave generator 2 is provided with: a lead wire group 2, a fixed end shaft head 2, and a fixed end keyway 2. The fixed end shaft head 2 is inserted into the countersunk hole 2 of the outer ball sleeve 2. The grooves of the fixed end keyway 2, the keyway 2, and the keyway 22 are aligned. A positioning key 2 is provided in the groove, which prevents the traveling wave generator 2 from rotating around its axis and moving axially. When the lead wire group 2 is connected to an alternating power supply, it can generate a traveling wave magnetic field for the traveling wave generator 2.

[0011] The protective sleeve 1 includes: a roller sleeve 1, an end shaft 1, a welded connecting ring 1, and a bearing mounting surface 1. The roller sleeve 1 has a stop 1 at its end, and the end shaft 1 has a cylindrical surface 1. The cylindrical surface 1 is inserted into the stop 1 of the roller sleeve 1 so that the inner ends fit together without gap to form a non-gap hole shaft connection pair 1. The welded connecting ring 1 welds the roller sleeve 1 and the end shaft 1 together as one piece. The protective sleeve 1 is non-magnetic. The roller sleeve 1, the end shaft 1, and the welded connecting ring 1 are made of the same material.

[0012] The protective sleeve 2 includes: a roller sleeve 2, an end shaft 2, a welded connecting ring 2, and a bearing mounting surface 2. The roller sleeve 2 has a stop 2 at its end, and the end shaft 2 has a cylindrical surface 2. The cylindrical surface 2 is inserted into the stop 2 of the roller sleeve 2 so that the inner ends fit together without gap to form a non-gap hole shaft connecting pair 2. The welded connecting ring 2 welds the roller sleeve 2 and the end shaft 2 together as one piece. The protective sleeve 2 is non-magnetic. The roller sleeve 2, the end shaft 2, and the welded connecting ring 2 are made of the same material.

[0013] The fixed-end bearing device 1 includes: a fixed-end bearing housing 1, a bearing 1, and an end sleeve 1; the bearing mounting surface 1 of the protective sleeve 1 is inserted into the inner hole of the bearing 1, the end sleeve 1 is fixed to the end of the protective sleeve 1 and defines the axial position of the inner ring of the bearing 1 with the bearing seat 1, the outer ring of the bearing 1 is inserted into the fixed-end bearing device 1, and the fixed-end end cap is fixed to the end of the fixed-end bearing housing 1 and defines the axial position of the outer ring of the bearing 1 with the fixed-end bearing housing 1.

[0014] The fixed-end bearing device 2 includes: a fixed-end bearing seat 2, a bearing 2, and an end sleeve 2; the bearing mounting surface 2 of the protective sleeve 2 is inserted into the inner hole of the bearing 2, the end sleeve 2 is fixed to the end of the protective sleeve 2 and defines the axial position of the inner ring of the bearing 2 with the bearing seat 2, the outer ring of the bearing 2 is inserted into the fixed-end bearing device 2, and the fixed-end end cap 2 is fixed to the end of the fixed-end bearing seat 2 and defines the axial position of the outer ring of the bearing 2 with the fixed-end bearing seat 2.

[0015] Cooling water chambers and junction boxes are respectively installed at both ends of the segmented roller electromagnetic stirring traveling wave generator, thus forming a segmented roller electromagnetic stirring device for slab continuous casting.

[0016] Compared with existing technologies, the advantages of this invention are: it effectively reduces the range of the weak magnetic field in the segmented area of ​​the segmented roller electromagnetic stirring device, expands the area where the traveling wave magnetic field is generated, improves the processability, effectively ensures processing accuracy, stable quality, low processing cost, and short processing time, etc. It effectively solves the problems existing in the prior art.

[0017] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0018] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of the segmented roller electromagnetic stirring traveling wave generator according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the traveling wave generator 1 in an embodiment of the present invention;

[0022] Figure 3This is a schematic diagram of the traveling wave generator 2 in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the protective sleeve 1 in an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the protective sleeve 2 in an embodiment of the present invention;

[0025] Figure 6 This is a cross-sectional view of the fixed end cap assembly 1 and the fixed end cap assembly 2 of the present invention;

[0026] Figure 7 This is a cross-sectional view of the fixed end cap 1 and the fixed end cap 2 of the present invention;

[0027] Figure 8 The present invention Figure 7 The left view;

[0028] Figure 9 Cross-sectional views of outer spherical sleeve 1 and outer spherical sleeve 2;

[0029] Figure 10 The present invention Figure 9 The right view;

[0030] Figure 11 The fixed-end bearing device 1 and the assembly diagram of the fixed-end bearing device 1 of the present invention;

[0031] Figure 12 A schematic diagram of a segmented roller electromagnetic stirring device for continuous casting of slabs derived from this invention.

[0032] In the diagram: 1-Traveling wave generator 1, 11-Protective sleeve 1, 110-Non-clearance hole shaft connection pair 1, 111-Roll sleeve 1, 112-End shaft 1, 113-Welded connecting ring 1, 114-Bearing mounting surface 1, 12-Traveling wave generator 1, 121-Lead wire assembly 1, 122-Fixed end shaft head 1, 123-Fixed end keyway 1, 13-Fixed end bearing assembly 1, 131-Fixed end bearing seat 1, 132-Bearing 1, 133-End sleeve 1, 14-Fixed end cover assembly 1, 141-Fixed end cover 1, 1411-Inner spherical surface 1, 1412-Inner hole 1, 1413-Keyway 1, 142-Outer spherical sleeve 1, 1421-Outer spherical surface 1, 2-Connecting ring, 3-Traveling wave generator 2, 31-Protective sleeve 2, 32-Wearing sleeve 2, 133-Wearing sleeve 2, 144-Wearing ring 2, 145-Wearing ring 2, 146-Wearing ring 2, 147-Wearing ring 2, 148-Wearing ring 2, 149-Wearing ring 2, 120-Wearing ring 2, 121-Wearing ring 2, 122-Wearing ring 2, 123-Wearing ring 2, 124-Wearing ring 2, 125-Wearing ring 2, 126-Wearing ring 2, 127-Wearing ring 2, 128- 2. Sheath 2, 310 - Non-clearance hole shaft connection pair 2, 311 - Roller sleeve 2, 312 - End shaft 2, 313 - Welded connecting ring 2, 314 - Bearing mounting surface 2, 32 - Traveling wave generator 2, 321 - Lead wire assembly 2, 322 - Fixed end shaft head 2, 323 - Fixed end keyway 2, 33 - Fixed end bearing assembly 2, 331 - Fixed end bearing seat 2, 332 - Bearing 2, 333 - End sleeve 2, 331 - Fixed end bearing seat 2, 332 - Bearing 2, 333 - End sleeve 2, 34 - Fixed end cover assembly 2, 341 - Fixed end cover 2, 3411 - Inner spherical surface 2, 342 - Outer spherical sleeve 2, 3421 - Outer spherical surface 2, 3422 - Keyway 22, 3423 - Cylindrical surface 2, 3424 - Countersunk hole 2. Detailed Implementation

[0033] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of the present invention. However, the present invention is not limited to these embodiments.

[0034] This invention appendix Figure 1 To be continued Figure 12 It can be seen from this:

[0035] The segmented roller-type electromagnetic stirring traveling wave generator of the present invention includes: a traveling wave generator 1 (1), a connecting ring (2), and a traveling wave generator 2 (3); the traveling wave generator 1 (1) and the traveling wave generator 2 (3) are completely independent roller-type electromagnetic stirring traveling wave generators, and can generate their own independent traveling wave magnetic fields using independent alternating power supplies; the traveling wave generator 1 (1) is provided with: a protective sleeve 1 (11), a traveling wave generator 1 (12), and a fixed end bearing device 1 (13). The fixed end cap assembly 1 (14) and the traveling wave generator 2 (3) are provided with: a protective sleeve 2 (31), a traveling wave generator 2 (32), a fixed end bearing device 2 (33) and a fixed end cap assembly 2 (34); the fixed end cap assembly 1 (14) and the fixed end cap assembly 2 (34) are back to back coaxially attached and fixedly connected by inserting a connecting ring (2), connecting the traveling wave generator 1 (1) and the traveling wave generator 2 (3) to form an integral segmented roller electromagnetic stirring traveling wave generator.

[0036] The traveling wave generating device 1 (1) of the present invention is provided with a fixed end 1 and a free end 1, and the traveling wave generating device 2 (3) is provided with a fixed end 2 and a free end 2; the fixed end 1 and the fixed end 2 are coaxially inserted back to back into the connecting ring (2) and are set at the middle connection to form the intermediate support of the fixed end; the fixed end cap assembly 1 (14) is provided with a fixed end cap 1 (141) and an outer ball sleeve 1 (142), the fixed end cap 1 (141) is provided with an inner spherical surface 1 (1411), the outer ball sleeve 1 (142) is provided with an outer spherical surface 1 (1421), the outer spherical surface 1 (1421) and the inner spherical surface 1 (1411) are engaged so that the outer ball sleeve 1 (142) is embedded in the fixed end cap 1 (141) to form a ball joint 1 within a limited range and prevent the traveling wave. The generator 1 (12) moves axially to form a fixed end 1; the fixed end cap group 2 (34) is provided with a fixed end cap 2 (341) and an outer ball sleeve 2 (342). The fixed end cap 2 (341) is provided with an inner ball surface 2 (3411), and the outer ball sleeve 2 (342) is provided with an outer ball surface 2 (3421). The outer ball surface 2 (3421) and the inner ball surface 2 (3411) engage with each other so that the outer ball sleeve 2 (342) is embedded in the fixed end cap 2 (341) to form a ball joint 2 within a limited range and prevent the traveling wave generator 2 (32) from moving axially to form a fixed end 2; the free end is provided at the two outer end supports. The free end allows the traveling wave generator to move to this end in a certain amount of extension and retraction, releasing the amount of extension and retraction of the traveling wave generator caused by temperature changes.

[0037] Furthermore, the fixed end cap assembly 1 (14) of the segmented roller electromagnetic stirring traveling wave generator of the present invention includes: a fixed end cap 1 (141) and an outer spherical sleeve 1 (142); the fixed end cap 1 (141) is provided with an inner spherical surface 1 (1411), an inner hole 1 (1412) and a keyway 1 (1413) at the center through hole, and the outer spherical sleeve 1 (142) is provided with an outer spherical surface 1 (1421), a keyway 12 (1422), a cylindrical surface 1 (1423) and a keyway 1 (1423). Countersunk hole 1 (1424); cylindrical surface 1 (1423) is installed in inner hole 1 (1412), outer spherical surface 1 (1421) and inner spherical surface 1 (1411) are engaged so that outer ball sleeve 1 (142) is embedded in fixed end cap 1 (141) to form ball joint 1; ball joint 1 is tightly set at the central through hole of fixed end cap 1 (141), shortening the axial space of fixed end 1 and reducing the weak magnetic area at the middle section of segmented roller electromagnetic stirring traveling wave generator.

[0038] Furthermore, the fixed end cap assembly 2 (34) of the present invention includes: a fixed end cap 2 (341) and an outer ball sleeve 2 (342); the fixed end cap 2 (341) is provided with an inner spherical surface 2 (3411), an inner hole 2 (3412) and a keyway 2 (3413) at the center through hole, and the outer ball sleeve 2 (342) is provided with an outer spherical surface 2 (3421), a keyway 22 (3422), a cylindrical surface 2 (3423) and a countersunk hole 2 (3424). 4); The cylindrical surface 2 (3423) is installed in the inner hole 2 (3412), and the outer spherical surface 2 (3421) and the inner spherical surface 2 (3411) are engaged so that the outer spherical sleeve 2 (342) is embedded in the fixed end cap 2 (341) to form a ball joint 2; the ball joint 2 is tightly set at the central through hole of the fixed end cap 2 (341), which shortens the axial space of the fixed end 2 and reduces the weak magnetic area at the middle section of the segmented roller electromagnetic stirring traveling wave generator.

[0039] Furthermore, the traveling wave generator 1 (12) of the present invention is provided with: lead wire group 1 (121), fixed end shaft head 1 (122) and fixed end keyway 1 (123); the fixed end shaft head 1 (122) is inserted into the countersunk hole 1 (1424) of the outer ball sleeve 1 (142), the slots of the fixed end keyway 1 (123), keyway 1 (1413) and keyway 12 (1422) are aligned, and a positioning key 1 is provided in the slot, so that the positioning key 1 prevents the traveling wave generator 1 (12) from rotating around its axis and moving axially; when the lead wire group 1 (121) is connected to an alternating power supply, the traveling wave generating device 1 (1) generates a traveling wave magnetic field.

[0040] Furthermore, the traveling wave generator 2 (32) of the present invention is provided with: lead wire group 2 (321), fixed end shaft head 2 (322) and fixed end keyway 2 (323); the fixed end shaft head 2 (322) is inserted into the countersunk hole 2 (3424) of the outer ball sleeve 2 (342), the grooves of the fixed end keyway 2 (323), keyway 2 (3413) and keyway 22 (3422) are aligned, and a positioning key 2 is provided in the groove, so that the positioning key 2 prevents the traveling wave generator 2 (32) from rotating around its axis and moving axially; when the lead wire group 2 (321) is connected to an alternating power supply, the traveling wave generating device 2 (3) generates a traveling wave magnetic field.

[0041] Furthermore, the protective sleeve 1 (11) of the present invention includes: roller sleeve 1 (111), end shaft 1 (112), welded connecting ring 1 (113) and bearing mounting surface 1 (114). The roller sleeve 1 (111) is provided with a stop 1 at the end, and the end shaft 1 (112) is provided with a cylindrical surface 1. The cylindrical surface 1 is inserted into the stop 1 of the roller sleeve 1 (111) so that the inner end is fitted without gap to form a non-gap hole shaft connecting pair 1 (110). The welded connecting ring 1 (113) welds the roller sleeve 1 (111) and the end shaft 1 (112) into a composite fusion. The protective sleeve 1 (11) is not magnetic. The roller sleeve 1 (111), the end shaft 1 (112) and the welded connecting ring 1 (113) are made of the same material.

[0042] Furthermore, the protective sleeve 2 (31) of the present invention includes: roller sleeve 2 (311), end shaft 2 (312), welded connecting ring 2 (313) and bearing mounting surface 2 (314). The roller sleeve 2 (311) is provided with a stop 2 at its end, and the end shaft 2 (312) is provided with a cylindrical surface 2. The cylindrical surface 2 is inserted into the stop 2 of the roller sleeve 2 (311) so that the inner end fits without gap to form a non-gap hole shaft connecting pair 2 (310). The welded connecting ring 2 (313) welds the roller sleeve 2 (311) and the end shaft 2 (312) into a composite fusion weld. The protective sleeve 2 (31) is not magnetic. The roller sleeve 2 (311), the end shaft 2 (312) and the welded connecting ring 2 (333) are made of the same material.

[0043] Furthermore, the fixed-end bearing device 1 (13) of the present invention includes: a fixed-end bearing seat 1 (131), a bearing 1 (132), and an end sleeve 1 (133); the bearing position 1 (114) of the protective sleeve 1 (11) is inserted into the inner hole of the bearing 1 (132), the end sleeve 1 (133) is fixed to the end of the protective sleeve 1 (111) and defines the axial position of the inner ring of the bearing 1 (132) with the bearing mounting surface 1 (114), the outer ring of the bearing 1 (132) is inserted into the fixed-end bearing device 1 (11), and the fixed-end end cap (141) is fixed to the end of the fixed-end bearing seat 1 (131) and defines the axial position of the outer ring of the bearing 1 (132) with the fixed-end bearing seat 1 (131).

[0044] Furthermore, the fixed-end bearing device 2 (33) of the present invention includes: a fixed-end bearing seat 2 (331), a bearing 2 (332), and an end sleeve 2 (333); the bearing position 2 (314) of the protective sleeve 2 (31) is inserted into the inner hole of the bearing 2 (332), the end sleeve 2 (333) is fixed to the end of the protective sleeve 2 (311) and defines the axial position of the inner ring of the bearing 2 (332) with the bearing mounting surface 2 (314), the outer ring of the bearing 2 (332) is inserted into the fixed-end bearing device 2 (31), and the fixed-end end cap 2 (341) is fixed to the end of the fixed-end bearing seat 2 (331) and defines the axial position of the outer ring of the bearing 2 (332) with the fixed-end bearing seat 2 (331).

[0045] Furthermore, cooling water chambers and junction boxes (such as...) are respectively provided at both ends of the segmented roller electromagnetic stirring traveling wave generator of the present invention. Figure 12 As shown in the figure, this forms a segmented roller electromagnetic stirring device for slab continuous casting.

[0046] This invention discloses a segmented roller-type electromagnetic stirring traveling wave generator. Through a novel and compact fixed-end structure, it expands the axial space of the coil winding of the traveling wave magnetic field generator while simultaneously reducing the weak magnetic field region at the fixed end. The two coaxially back-to-back fixed ends of the segmented roller-type electromagnetic stirring traveling wave generator form the intermediate support of the device. Its unique fixed-end structure shortens the axial structure of the intermediate segment, effectively reducing the weak magnetic field region and improving the metallurgical effect. The protective sleeve of this invention tightly integrates the roller sleeve with the end shaft, effectively expanding the winding space of the traveling wave generator. Positioning the end shaft of the protective sleeve at the fixed end as the intermediate support position of the segmented roller-type electromagnetic stirring traveling wave generator further shortens the axial weak magnetic field region of the intermediate segment, significantly improving the metallurgical effect.

[0047] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A segmented roller-type electromagnetic stirring traveling wave generator, characterized in that, include: Traveling wave generator 1 (1), connecting ring (2) and traveling wave generator 2 (3); the traveling wave generator 1 (1) and the traveling wave generator 2 (3) are completely independent roller electromagnetic stirring traveling wave generators, which can generate their own independent traveling wave magnetic fields using independent alternating power supplies; the traveling wave generator 1 (1) is provided with: protective sleeve 1 (11), traveling wave generator 1 (12), fixed end bearing device 1 (13) and fixed end cap group 1 (14); the traveling wave generator 2 (3) is provided with: protective sleeve 2 (31), traveling wave generator 2 (32), fixed end bearing device 2 (33) and fixed end cap group 2 (34); the fixed end cap group 1 (14) and the fixed end cap group 2 (34) are back to back coaxially attached and fixedly connected by inserting the connecting ring (2), connecting the traveling wave generator 1 (1) and the traveling wave generator 2 (3) to form an integral segmented roller electromagnetic stirring traveling wave generator; The traveling wave generator 1 (1) is provided with a fixed end 1 and a free end 1. The traveling wave generator 2 (3) is provided with a fixed end 2 and a free end 2. The fixed end 1 and the fixed end 2 are coaxially inserted back to back into the connecting ring (2) and are set at the middle connection to form an intermediate support. The fixed end cap assembly 1 (14) is provided with a fixed end cap 1 (141) and an outer ball sleeve 1 (142). The fixed end cap 1 (141) is provided with an inner spherical surface 1 (1411), and the outer ball sleeve 1 (142) is provided with an outer spherical surface 1 (1421). The outer spherical surface 1 (1421) and the inner spherical surface 1 (1411) engage so that the outer ball sleeve 1 (142) is embedded in the fixed end cap 1 (141) to form a ball joint 1 within a limited range and prevent the traveling wave from generating. The generator 1 (12) moves axially to form a fixed end 1; the fixed end cap group 2 (34) is provided with a fixed end cap 2 (341) and an outer ball sleeve 2 (342). The fixed end cap 2 (341) is provided with an inner ball surface 2 (3411), and the outer ball sleeve 2 (342) is provided with an outer ball surface 2 (3421). The outer ball surface 2 (3421) and the inner ball surface 2 (3411) engage so that the outer ball sleeve 2 (342) is embedded in the fixed end cap 2 (341) to form a ball joint 2 within a limited range and prevent the traveling wave generator 2 (32) from moving axially to form a fixed end 2; the free end is provided at the two outer end supports. The free end allows the traveling wave generator to move to this end in a certain amount of extension and retraction, releasing the amount of extension and retraction of the traveling wave generator caused by temperature changes.

2. The segmented roller electromagnetic stirring traveling wave generator according to claim 1, characterized in that, The fixed end cap assembly 1 (14) includes: a fixed end cap 1 (141) and an outer ball sleeve 1 (142); the fixed end cap 1 (141) has an inner spherical surface 1 (1411), an inner hole 1 (1412), and a keyway 1 (1413) at its central through hole; the outer ball sleeve 1 (142) has an outer spherical surface 1 (1421), a keyway 12 (1422), a cylindrical surface 1 (1423), and a countersunk hole 1 (1423). 24); The cylindrical surface 1 (1423) is installed in the inner hole 1 (1412), and the outer spherical surface 1 (1421) and the inner spherical surface 1 (1411) are engaged so that the outer ball sleeve 1 (142) is embedded in the fixed end cap 1 (141) to form a ball joint 1 within a limited range; the ball joint 1 is tightly disposed at the central through hole of the fixed end cap 1 (141), and the ball joint 1 is limited to a limited range; The fixed end cap assembly 2 (34) includes: a fixed end cap 2 (341) and an outer ball sleeve 2 (342); the fixed end cap 2 (341) has an inner spherical surface 2 (3411), an inner hole 2 (3412), and a keyway 2 (3413) at its central through hole; the outer ball sleeve 2 (342) has an outer spherical surface 2 (3421), a keyway 22 (3422), a cylindrical surface 2 (3423), and a countersunk hole 2 (3423). 24); The cylindrical surface 2 (3423) is installed in the inner hole 2 (3412), and the outer spherical surface 2 (3421) and the inner spherical surface 2 (3411) are engaged so that the outer spherical sleeve 2 (342) is embedded in the fixed end cap 2 (341) to form a ball joint 2 within a limited range; the ball joint 2 is tightly set at the central through hole of the fixed end cap 2 (341), and the ball joint 2 is limited to a limited range.

3. The segmented roller electromagnetic stirring traveling wave generator according to claim 1 or 2, characterized in that, The traveling wave generator 1 (12) is provided with: lead wire group 1 (121), fixed end shaft head 1 (122) and fixed end keyway 1 (123); the fixed end shaft head 1 (122) is inserted into the countersunk hole 1 (1424) of the outer ball sleeve 1 (142), the grooves of the fixed end keyway 1 (123), the keyway 1 (1413) and the keyway 12 (1422) are aligned, and a positioning key 1 is provided in the groove, the positioning key 1 prevents the traveling wave generator 1 (12) from rotating around its axis and moving axially; when the lead wire group 1 (121) is connected to an alternating power supply, the traveling wave generator 1 (1) can generate a traveling wave magnetic field.

4. The segmented roller electromagnetic stirring traveling wave generator according to claim 1 or 2, characterized in that, The traveling wave generator 2 (32) is provided with: lead wire group 2 (321), fixed end shaft head 2 (322) and fixed end keyway 2 (323); the fixed end shaft head 2 (322) is inserted into the countersunk hole 2 (3424) of the outer ball sleeve 2 (342), the grooves of the fixed end keyway 2 (323), the keyway 2 (3413) and the keyway 22 (3422) are aligned, and a positioning key 2 is provided in the groove, the positioning key 2 prevents the traveling wave generator 2 (32) from rotating around its axis and moving axially; when the lead wire group 2 (321) is connected to an alternating power supply, the traveling wave generator 2 (3) can generate a traveling wave magnetic field.

5. The segmented roller electromagnetic stirring traveling wave generator according to claim 1, characterized in that, The protective sleeve 1 (11) includes: a roller sleeve 1 (111), an end shaft 1 (112), a welded connecting ring 1 (113), and a bearing mounting surface 1 (114). The roller sleeve 1 (111) is provided with a stop 1 at its end, and the end shaft 1 (112) is provided with a cylindrical surface 1. The cylindrical surface 1 is inserted into the stop 1 of the roller sleeve 1 (111) so that the inner end fits together without gap to form a non-gap hole shaft connecting pair 1 (110). The welded connecting ring 1 (113) welds the roller sleeve 1 (111) and the end shaft 1 (112) into a composite fusion. The protective sleeve 1 (11) is not magnetic. The roller sleeve 1 (111), the end shaft 1 (112), and the welded connecting ring 1 (113) are made of the same material.

6. The segmented roller electromagnetic stirring traveling wave generator according to claim 1, characterized in that, The protective sleeve 2 (31) includes: roller sleeve 2 (311), end shaft 2 (312), welded connecting ring 2 (313) and bearing mounting surface 2 (314). The roller sleeve 2 (311) is provided with a stop 2 at its end. The end shaft 2 (312) is provided with a cylindrical surface 2. The cylindrical surface 2 is inserted into the stop 2 of the roller sleeve 2 (311) so that the inner end fits without gap to form a non-gap hole shaft connecting pair 2 (310). The welded connecting ring 2 (313) welds the roller sleeve 2 (311) and the end shaft 2 (312) into a composite fusion. The protective sleeve 2 (31) is not magnetic. The roller sleeve 2 (311), end shaft 2 (312) and welded connecting ring 2 (333) are made of the same material.

7. The segmented roller electromagnetic stirring traveling wave generator according to claim 1 or 5, characterized in that, The fixed-end bearing device 1 (13) includes: a fixed-end bearing seat 1 (131), a bearing 1 (132), and an end sleeve 1 (133); the bearing position 1 (114) of the protective sleeve 1 (11) is inserted into the inner hole of the bearing 1 (132), the end sleeve 1 (133) is fixed to the end of the protective sleeve 1 (111) and defines the axial position of the inner ring of the bearing 1 (132) with the bearing mounting surface 1 (114), the outer ring of the bearing 1 (132) is inserted into the fixed-end bearing device 1 (11), and the fixed-end end cap (141) is fixed to the end of the fixed-end bearing seat 1 (131) and defines the axial position of the outer ring of the bearing 1 (132) with the fixed-end bearing seat 1 (131).

8. The segmented roller electromagnetic stirring traveling wave generator according to claim 1 or 6, characterized in that, The fixed-end bearing device 2 (33) includes: a fixed-end bearing seat 2 (331), a bearing 2 (332), and an end sleeve 2 (333); the bearing position 2 (314) of the protective sleeve 2 (31) is inserted into the inner hole of the bearing 2 (332), the end sleeve 2 (333) is fixed to the end of the protective sleeve 2 (311) and defines the axial position of the inner ring of the bearing 2 (332) with the bearing mounting surface 2 (314), the outer ring of the bearing 2 (332) is inserted into the fixed-end bearing device 2 (31), and the fixed-end end cap 2 (341) is fixed to the end of the fixed-end bearing seat 2 (331) and defines the axial position of the outer ring of the bearing 2 (332) with the fixed-end bearing seat 2 (331).

9. The segmented roller electromagnetic stirring traveling wave generator according to claim 1, characterized in that, Cooling water chambers and junction boxes are respectively installed at both ends of the segmented roller electromagnetic stirring traveling wave generator, thus forming a segmented roller electromagnetic stirring device for slab continuous casting.

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