Bearing cover and bearing assembly for dry continuous casting

Abstract

The utility model discloses a bearing penetrates cover and bearing assembly for dry -type continuous casting, this bearing penetrates cover includes: the whole is hollow's cover body of gyroid, the cover body has opposite first side and second side along the first direction, the first side forms the through -hole of variable aperture to the second side, the through -hole includes first hole section and second hole section who set up in order from the first side to the second side, the inner diameter of first hole section is less than the inner diameter of second hole section, the inner wall of first hole section is opposite and forms the sealing groove, the outer surface of cover body is provided with the lap joint, the bearing penetrates cover is used for embedding installation in the bearing seat, and the lap joint is used for abutting in bearing seat, penetrates the cover sealing piece, the cover sealing piece is metal sealing piece, and the cover sealing piece installs in sealing groove. The application can effectively improve the reliability of bearing penetrates cover when using, and then improve the service life greatly.

Description

Technical Field

[0001] This utility model relates to the technical field of equipment for dry continuous casting, and particularly to a bearing cover and bearing assembly for dry continuous casting. Background Technology

[0002] Continuous casting technology in steelmaking is the production process that transforms molten steel into solid billets of different shapes and sizes. Dry continuous casting, compared to conventional continuous casting, employs techniques such as dry material in areas like the tundish. Using dry tundish material leverages its excellent insulation and protective properties to reduce heat loss, prevent steel contamination, and maintain better temperature and compositional uniformity within the tundish, providing better conditions for subsequent solidification and forming in the crystallizer.

[0003] In dry continuous casting, after the molten steel injected into the crystallizer is cooled into a relatively thin shell, it enters the casting flow guide section. At this time, because the thin high-temperature shell has a relatively low ability to resist mechanical stress and thermal stress, the service life requirements of the rollers in the casting flow guide section are very high.

[0004] The situation in dry continuous casting differs from that in conventional continuous casting. Conventional continuous casting utilizes a long spray cooling zone for the billet, resulting in excellent cooling of the rollers in the casting flow guide section. This leads to lower roller temperatures and a service life sufficient for the continuous casting machine. Dry continuous casting rollers, however, employ a large interference fit, at least five times that of typical hot-fit rollers. During manufacturing, they require heating to several hundred degrees Celsius before installation, and the hot-fitting process must be completed rapidly. This heat transfers to the shaft, potentially burning out rubber seals during the hot-fitting stage. Furthermore, the lack of external spray cooling water during the dry continuous casting process causes excessively high temperatures at the rubber seals, leading to their damage.

[0005] Therefore, one of the locations where rollers are prone to failure is the bearing cover with a sealing structure.

[0006] Therefore, it is necessary to propose a bearing cover and bearing assembly for dry continuous casting to solve at least one of the above problems. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a bearing cover and bearing assembly for dry continuous casting, which can effectively improve the reliability of the bearing cover during use and thus significantly extend its service life.

[0008] The specific technical solution of this utility model embodiment is as follows:

[0009] A bearing cover for dry continuous casting, comprising: a cover body that is hollow and rotating in shape, the cover body having a first side and a second side opposite to each other along a first direction, a through hole with a variable diameter formed from the first side to the second side, the through hole including a first hole segment and a second hole segment arranged sequentially from the first side to the second side, the inner diameter of the first hole segment being smaller than the inner diameter of the second hole segment; a sealing groove formed on the inner wall of the first hole segment; an overlapping portion provided on the outer surface of the cover body, the bearing cover being used to be embedded and installed in a bearing seat, the overlapping portion being used to abut against the bearing seat; and a cover seal, the cover seal being a metal seal, the cover seal being installed in the sealing groove.

[0010] In a preferred embodiment, there are two sealing grooves, which are arranged at intervals along the first direction.

[0011] In a preferred embodiment, the cover is provided with a plurality of fastening holes in the circumferential direction for connecting the bearing cover to the bearing seat.

[0012] In a preferred embodiment, the first hole segment is provided with an auxiliary hole for disassembling the metal seal.

[0013] In a preferred embodiment, the top of the cover is provided with a planar structure for embedding within the bearing seat.

[0014] In a preferred embodiment, the cover is provided with at least one process hole in the circumferential direction for disassembling the bearing cover.

[0015] A bearing assembly for dry continuous casting, the bearing assembly comprising a bearing cover for dry continuous casting as described above.

[0016] In a preferred embodiment, the bearing assembly for dry continuous casting further includes a bearing housing that mates with the bearing housing, the inner surface of which is provided with a groove along the first direction, and a seal is installed in the groove.

[0017] In a preferred embodiment, there are two grooves, which are arranged at intervals along the first direction.

[0018] In a preferred embodiment, the seal is a metal seal.

[0019] The technical solution of this utility model has the following significant beneficial effects:

[0020] In the embodiments of this application, the bearing cover is embedded within the bearing housing. When the bearing cover is embedded in the bearing housing, the area where the bearing cover mates with the bearing housing is covered by the bearing housing body. This significantly reduces the risk of impurities and high-temperature moisture entering between the bearing cover and the bearing housing body during use, compared to the prior art where the cover is directly placed on the bearing housing end face. This prevents corrosion of structures near the bearing and avoids affecting sealing and lubrication, thereby improving the reliability and service life of the bearing cover and its mating bearing housing. Furthermore, the cover seal is a metal seal, which is adaptable to highly corrosive and high-temperature environments and has a long service life. This, in turn, ensures a longer service life for both the bearing cover and the bearing housing, reducing operating and maintenance costs. Moreover, compared to existing rubber seals, this metal seal has a smaller contact area with other mating parts, reducing friction and significantly minimizing heat generation and wear.

[0021] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, embodiments of the present invention include many changes, modifications, and equivalents. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0022] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0023] Figure 1 This is a schematic diagram of a bearing assembly for dry continuous casting in an installed state, as provided in the embodiments of this application.

[0024] Figure 2 This is a schematic diagram of the structure of a bearing cover for dry continuous casting provided in the embodiments of this application;

[0025] Figure 3 for Figure 2A cross-sectional view (AA) of a bearing cover for dry continuous casting provided in the embodiments of this application;

[0026] Figure 4 This is a schematic diagram of a bearing assembly used in dry continuous casting in the prior art, in its installed state.

[0027] Reference numerals in the figures of this application:

[0028] 1. Bearing housing body;

[0029] 2. Bearing cover;

[0030] 20. Cover;

[0031] 201. First borehole section;

[0032] 202, Second Hole Section;

[0033] 21. Sealing groove;

[0034] 22. Overlap section;

[0035] 220. Planar structure;

[0036] 203. Process hole;

[0037] 204. Auxiliary hole;

[0038] 205. Fastening hole;

[0039] 3. Sealing components;

[0040] 4. Through-cover sealing element;

[0041] 5. Bearings;

[0042] 6. Bushing;

[0043] 7. Mandrel.

[0044] Existing reference numerals:

[0045] 100. Bearing housing;

[0046] 200. Transparent lid;

[0047] 300. Rubber seals. Detailed Implementation

[0048] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate this utility model and are not intended to limit the scope of this utility model. After reading this utility model, any modifications of this utility model in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0049] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0051] For dry continuous casting rolls, the existing seals within the bearing housings and bearing covers are primarily rubber seals. When these seals fail, only the bearing housings at both ends of the dry continuous casting roll can be disassembled, while the bearing housings and bearing covers in the middle cannot. If the middle bearing housings and bearing covers need to be disassembled due to damage to the rubber seals, destructive methods such as sawing can be used, which will damage the entire roll. Therefore, one of the keys to improving the service life of these bearing covers lies in extending the service life of the seals themselves.

[0052] This invention provides a bearing cover and bearing assembly for dry continuous casting, which can effectively improve the reliability of the bearing cover during use and thus significantly increase its service life.

[0053] Please refer to the following for comprehensive information. Figures 1 to 3 This application specification provides a bearing cover 2 for dry continuous casting. The bearing cover 2 for dry continuous casting may include: a cover body 20 that is hollow and rotating in shape, the cover body 20 having a first side and a second side opposite to each other along a first direction, a through hole with a variable diameter formed from the first side to the second side, the through hole including a first hole segment 201 and a second hole segment 202 arranged sequentially from the first side to the second side, the inner diameter of the first hole segment 201 being smaller than the inner diameter of the second hole segment 202; a sealing groove 21 formed on the inner wall of the first hole segment 201; an overlapping portion 22 provided on the outer surface of the cover body 20, the bearing cover 2 being used to be embedded and installed in a bearing seat, the overlapping portion 22 being used to abut against the bearing seat; and a cover sealing element 4, the cover sealing element 4 being a metal sealing element, the cover sealing element 4 being installed in the sealing groove 21.

[0054] In the embodiments of this application, such as Figure 1As shown, the bearing cover 2 is used to be embedded in the bearing housing. Specifically, when the bearing housing is integrally formed with the bearing cover 2 on one side, the bearing cover 2 can be embedded in one side of the bearing housing; or, when the bearing housing is not integrally formed with the bearing cover 2 on one side, the bearing cover 2 can be embedded in both sides of the bearing housing respectively.

[0055] In the embodiments of this application, the example is mainly taken as an embodiment in which the bearing cover 2 is integrally formed on one side of the bearing housing, and the bearing cover 2 can be embedded and installed on one side of the bearing housing.

[0056] Specifically, a spindle 7 is inserted through the bearing housing, a bearing 5 is disposed between the spindle 7 and the bearing housing, a bushing 6 is disposed at the left end of the bearing 5 and between the spindle 7 and the first side of the bearing housing, and a bearing cover 2 and bushing 6 are disposed at the right end of the bearing 5 and between the spindle 7 and the second side of the bearing housing.

[0057] When the bearing cover 2 is installed in the bearing housing by an embedded installation method, the position where the bearing cover 2 mates with the bearing housing can be covered by the bearing housing body 1. That is, compared with the prior art (such as...), Figure 4 As shown, the cover 200 is directly placed on the end face of the bearing housing 100. During use, it can effectively reduce the risk of impurities and high-temperature moisture entering between the bearing cover 2 and the bearing housing body 1, thereby avoiding corrosion of the structure near the bearing 5 and affecting the sealing and lubrication effect. In this way, it can improve the reliability of the bearing cover 2 and the bearing housing that it is in use, and increase the service life.

[0058] In this embodiment, the bearing cover 2 mainly includes a cover body 20 and a cover seal 4. The cover body 20 is generally hollow and rotary. The cover body 20 has a first side and a second side along a first direction, and a through hole with a variable diameter is formed from the first side to the second side. The through hole includes a first hole segment 201 and a second hole segment 202 sequentially arranged from the first side to the second side. The inner diameter of the first hole segment 201 is smaller than the inner diameter of the second hole segment 202; a sealing groove 21 is formed on the inner wall of the smaller inner diameter first hole segment 201. This sealing groove 21 is used to install the cover seal 4.

[0059] Specifically, the through-cover seal 4 is a metal seal. The material of this metal seal can be selected to be high-temperature resistant and corrosion-resistant. For example, the metal seal can be made of stainless steel with a temperature resistance of over 500 degrees Celsius, thus ensuring a long service life due to its strong corrosion resistance and performance under high-temperature conditions. This, in turn, ensures a longer service life for both the bearing through-cover 2 and the bearing housing. This reduces operating and maintenance costs.

[0060] Furthermore, this type of metal seal is relative to Figure 4 As shown in the conventional rubber seal 300, the contact area with other mating parts is small, and the contact area with related parts is also small and thick, which reduces friction and thus greatly reduces heat generation and wear. This cover seal 4 is ideal for use in high-temperature, friction-sensitive parts. In addition, the combination of the two metal seals forms a multi-labyrinth structure, which has a special sealing effect for grease lubrication and can also prevent dirt, dust and other forms of impurities from entering.

[0061] In one embodiment, there are two sealing grooves 21, and the two sealing grooves 21 are arranged at intervals along the first direction.

[0062] In this embodiment, there can be two sealing grooves 21, which are spaced apart along the first direction (axial direction). Correspondingly, there can also be two through-cap seals 4 disposed in the sealing grooves 21. Specifically, the two through-cap seals 4 can be double-layered sealing rings spaced apart along the axial direction, used to increase the choking effect, and having continuous winding and balanced radial tension. Furthermore, the combination of these two metal seals forms a multi-labyrinth structure, which has a special sealing effect for grease lubrication and can also prevent the intrusion of dirt, dust, and other forms of impurities.

[0063] like Figure 2 As shown, in one embodiment, the cover 20 is provided with a plurality of fastening holes 205 in the circumferential direction for connecting the bearing cover 2 to the bearing seat.

[0064] In this embodiment, a plurality of fastening holes 205 can be provided in the circumferential direction on the side of the bearing cover 2 facing the bearing seat. These fastening holes 205 are used to install fasteners, thereby fixing the bearing cover 2 to the bearing seat using these fasteners. Specifically, the fastening holes 205 can be spaced apart along the circumferential direction of the cover 20. Specifically, the number of fastening holes 205 can be determined comprehensively based on the actual radial dimensions of the bearing cover 2, etc., and this application does not impose a specific numerical limitation here.

[0065] In one embodiment, the first hole segment 201 is provided with an auxiliary hole 204 for disassembling the metal seal.

[0066] In this embodiment, an auxiliary hole 204 for disassembling the metal seal can be provided in the first hole section 201 of the bearing cover 2. Specifically, there can be multiple auxiliary holes 204, which can be spaced apart along the circumferential direction of the cover body 20.

[0067] For example, there can be two auxiliary holes 204, which can be evenly spaced along the circumference of the cover 20. The auxiliary holes 204 can be blind holes. When removing the metal seal using a disassembly tool, the force of the tool can be applied to the auxiliary hole 204, thus facilitating the removal of the metal seal.

[0068] Please refer to the following: Figure 1 , Figure 2 and Figure 3 In one embodiment, the top of the cover 20 is provided with a planar structure 220, which is used to be embedded in the bearing seat.

[0069] In this embodiment, a planar structure 220 is provided on the top of the cover 20, which is equivalent to the structure formed after removing part of the material from the top of the circular cover 20. When the top plate of the cover 20 is provided with the planar structure 220, it can help the cover 20 to be reliably embedded in the bearing seat.

[0070] In one embodiment, the cover 20 is provided with at least one process hole 203 in the circumferential direction for disassembling the bearing cover 2.

[0071] In this embodiment, the cover 20 may be provided with at least one process hole 203 for disassembling the bearing cover 2 in the circumferential direction. For example, there may be three process holes 203, which may be axially through holes. When it is necessary to disassemble the process hole 203, the disassembly process can be combined with the process hole 203 to separate the bearing cover 2 from the bearing seat.

[0072] This application also provides a bearing assembly 5 for dry continuous casting. The bearing assembly 5 for dry continuous casting includes the bearing cover 2 for dry continuous casting as described above. By providing the bearing cover 2 for dry continuous casting, the bearing assembly 5 for dry continuous casting can achieve the technical effects achieved by the embodiment of the bearing cover 2 for dry continuous casting. For details, please refer to the specific description of the above embodiment. This application will not repeat it here.

[0073] In one embodiment, the bearing assembly for dry continuous casting further includes a bearing housing that mates with the bearing cover 2, the inner surface of the bearing housing having a groove along the first direction, and a seal 3 being installed in the groove.

[0074] In this embodiment, the bearing housing may include a bearing housing body 1, which is an integrally formed structure. The bearing housing body 1 has a first side and a second side opposite to each other along a first direction. The bearing housing body 1 is provided with a first shaft hole segment, a second shaft hole segment, a third shaft hole segment and a fourth shaft hole segment with increasing cross-section from the first side to the second side. A groove is formed inward on the first inner wall where the first shaft hole segment is located. The groove is used to install the seal 3. The second shaft hole segment and the third shaft hole segment cooperate to form a first stepped portion, which is used to abut against the bearing 5. The diameter of the third shaft hole segment is adapted to the outer diameter of the bearing 5. The third shaft hole segment and the fourth shaft hole segment cooperate to form a second stepped portion, which is used to abut against the bearing cover 2. The diameter of the fourth shaft hole segment is adapted to the maximum outer diameter of the bearing cover 2.

[0075] In the embodiments of this application, such as Figure 1 As shown, the bearing housing body 1 is a one-piece molded structure, specifically, it can be roughly a hollow rotating body. A mandrel 7 passes through the bearing housing, and a bearing 5 is disposed between the mandrel 7 and the bearing housing. A bushing 6 is disposed at the left end of the bearing 5, located on the first side of the bearing housing, between the bearing 5 and the mandrel 7. A bearing cover 2 and the bushing 6 are disposed at the right end of the bearing 5, located on the second side of the bearing housing, between the bearing 5 and the mandrel 7. In the embodiment of this application, one side of the bearing housing body 1... Figure 1 As shown on the left, by integrally forming it with the bearing cover 2, the rigidity and strength of the bearing housing can be effectively increased, thereby improving its service life. In addition, when one side of the bearing housing body 1 is integrally formed with the bearing cover 2, the assembly process can be simplified, and external media will not enter between the integrally formed bearing housing body 1 and the bearing cover 2, thereby improving the reliability during use.

[0076] The integral molding method adopted for the bearing housing body 1 can include any of the following: casting molding and machining molding. Of course, the specific configuration of the integral molding method can also be other methods, and is not limited to the above description. Those skilled in the art may make other changes based on the technical essence of this application, but as long as the function and effect achieved are the same as or similar to this application, they should be covered within the protection scope of this application.

[0077] Specifically, the bearing housing body 1 has a first side and a second side along a first direction, and the bearing housing body 1 is provided with a first shaft hole section, a second shaft hole section, a third shaft hole section and a fourth shaft hole section with increasing cross-sectional area from the first side to the second side. The first direction is the axial direction of the mandrel 7.

[0078] A groove is formed inwardly on the first inner wall where the first shaft hole section is located. The groove is used to install the seal 3. There can be two grooves, which are spaced apart along the first direction. Correspondingly, there can also be two seals 3 disposed in the groove. Specifically, the two seals 3 can be double-layered sealing rings spaced apart along the axial direction, used to increase the choking effect, and having continuous winding and balanced radial tension.

[0079] The sealing element 3 is a metal seal. Specifically, the metal seal can be made of a high-temperature resistant and corrosion-resistant material. For example, it can be made of stainless steel with a temperature resistance of over 500 degrees Celsius, ensuring a long service life due to its strong corrosion resistance and performance under high-temperature conditions, thereby guaranteeing a longer service life for the bearing housing. Furthermore, this type of metal seal, compared to… Figure 4 The existing rubber seal 300 shown has a small contact area with other mating parts, and its small contact area with related parts reduces friction, thus greatly reducing heat generation and wear. This type of metal seal is ideal for use in high-temperature, friction-sensitive areas. Furthermore, the combination of the two metal seals forms a multi-layered labyrinth structure, which provides a special sealing effect for grease lubrication and prevents the intrusion of dirt, dust, and other impurities.

[0080] It should be noted that in the description of this application, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more.

[0081] The various embodiments described in this specification are presented in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0082] The above are merely a few embodiments of this utility model. Although the embodiments disclosed in this utility model are as described above, the content is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the embodiments without departing from the spirit and scope disclosed in this utility model. However, the patent protection scope of this utility model shall still be determined by the scope defined in the appended claims.

Claims

1. A bearing cover for dry continuous casting, characterized in that, The bearing cover for dry continuous casting includes: The cover is a hollow, rotating body with a first side and a second side opposite each other along a first direction. A through hole with a variable diameter is formed from the first side to the second side. The through hole includes a first hole segment and a second hole segment arranged sequentially from the first side to the second side. The inner diameter of the first hole segment is smaller than the inner diameter of the second hole segment. A sealing groove is formed on the inner wall of the first hole segment. An overlapping part is provided on the outer surface of the cover. The bearing cover is used to be embedded and installed in a bearing seat, and the overlapping part is used to abut against the bearing seat. A through-cover seal, wherein the through-cover seal is a metal seal and is installed in the sealing groove.

2. The bearing cover for dry continuous casting as described in claim 1, characterized in that, The number of sealing grooves is two, and the two sealing grooves are arranged at intervals along the first direction.

3. The bearing cover for dry continuous casting as described in claim 1, characterized in that, The cover has multiple fastening holes in the circumferential direction for connecting the bearing cover to the bearing seat.

4. The bearing cover for dry continuous casting as described in claim 1, characterized in that, The first hole section is provided with an auxiliary hole for disassembling the metal seal.

5. The bearing cover for dry continuous casting as described in claim 1, characterized in that, The top of the cover is provided with a planar structure, which is used to be embedded in the bearing seat.

6. The bearing cover for dry continuous casting as described in claim 1, characterized in that, The cover has at least one process hole in the circumferential direction for disassembling the bearing cover.

7. A bearing assembly for dry continuous casting, characterized in that, The bearing assembly includes a bearing cover for dry continuous casting as described in any one of claims 1 to 6.

8. The bearing assembly for dry continuous casting as described in claim 7, characterized in that, The bearing assembly for dry continuous casting further includes a bearing housing that mates with the bearing housing, the inner surface of which is provided with a groove along the first direction, and a seal is installed in the groove.

9. The bearing assembly for dry continuous casting as described in claim 8, characterized in that, The number of grooves is two, and the two grooves are arranged at intervals along the first direction.

10. The bearing assembly for dry continuous casting as described in claim 9, characterized in that, The seal is a metal seal.

Images