Rolling mill bearing seat sealing structure and rolling mill bearing seat assembly
By adopting a double sealing structure of waterproof ring, water seal ring and sealing ring in the bearing seat of the mill, the problem of poor sealing of the bearing seat is solved, and the effect of effectively isolating the cooling water is achieved, extending the service life of the bearing and reducing production losses.
Patent Information
- Application Number
- CN202422323825.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-09-24
AI Technical Summary
The existing rolling mill bearing seat has poor sealing properties, which can easily lead to the loss of lubricating oil, affect the normal operation of the bearing seat, and even cause damage to the bearing seat.
The sealing structure is adopted that includes a waterproof ring, a water seal ring and a sealing ring. The waterproof ring and a water seal ring are cast in one piece. The sealing ring includes a waterproof seal ring and a dustproof seal ring. The two sealing rings separate the cooling water from the outside.
It achieves a strong isolation effect, prevents cooling water from entering the bearing seat, extends the service life of the bearing, reduces the risk of burning the shaft, and reduces production losses.
Smart Images
Figure CN222963194U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of rolling mill bearing seats, and particularly relates to a sealing structure of a rolling mill bearing seat and a rolling mill bearing seat assembly. Background Art
[0002] Rolling mill bearings are used in the rolling industry, that is, for rolling non-ferrous metals, ferrous metals and non-metal products. They are used for bearings at the roll diameter of the rolling roll system and on the drum. Usually, four-row cylindrical roller bearings are used to bear radial loads, and thrust roller or thrust ball bearings and angular contact ball or radial roller bearings are used to bear axial loads. Currently, most use oil-air lubrication, oil mist lubrication or grease for lubrication and cooling.
[0003] However, accidents of shaft burning often occur during use. After multiple tests and disassembly and inspection by the applicant, it is found that: there is obvious water ingress in the rolling mill bearings taken offline after a period of use of the finishing mill bearings, resulting in a decrease in the viscosity of the bearing lubricating oil and leakage of the lubricating oil. Rust marks on the balls are generally found in the box body after the bearing is disassembled. Therefore, the existing bearing seat has poor sealing performance, is prone to water ingress, resulting in poor lubrication effect, rusting of the balls in the bearing seat, affecting the normal operation of the bearing seat, and even causing damage to the bearing seat. Summary of the Utility Model
[0004] An embodiment of the utility model provides a sealing structure of a rolling mill bearing seat and a rolling mill bearing seat assembly, aiming to solve the technical problem that the bearing seat in the prior art is prone to water ingress, resulting in loss of lubricating oil and affecting the normal operation of the bearing seat.
[0005] To achieve the above object, the technical solution adopted by the utility model is as follows:
[0006] In the first aspect, a sealing structure of a rolling mill bearing seat is provided, including:
[0007] A waterproof ring, with an installation ring groove formed on the inner side;
[0008] A water seal ring, coaxially connected to the waterproof ring. A fixed ring groove is formed on the inner side surface of the water seal ring. An annular baffle is coaxially provided at one axial end of the water seal ring away from the waterproof ring, and an installation opening for sleeving a rolling roll is formed in the middle of the baffle; and
[0009] A plurality of sealing rings, respectively installed in the installation ring groove and the fixed ring groove, and respectively fitting with the outer circumference of the rolling roll.
[0010] Combined with the first aspect, in a possible implementation manner, the waterproof ring and the water seal ring are integrally cast.
[0011] In combination with the first aspect, in a possible implementation, the sealing ring includes a waterproof sealing ring and a dustproof sealing ring. The waterproof sealing ring is installed in the installation annular groove, and the dustproof sealing ring is installed in the fixed annular groove.
[0012] In combination with the first aspect, in a possible implementation, the inner diameter of the baffle gradually decreases in the direction away from the waterproof ring.
[0013] In combination with the first aspect, in a possible implementation, an abutting ring is provided at one end of the baffle away from the waterproof ring, and one axial end of the abutting ring away from the baffle is used to abut against the limiting protrusion on the rolling mill roll.
[0014] In combination with the first aspect, in a possible implementation, the sealing ring is a silicone ring or a rubber ring.
[0015] Compared with the prior art, the sealing structure of the rolling mill bearing seat provided by the present utility model provides a sealing structure. A waterproof ring and a water seal ring are provided between the rolling mill roll and the sealing seat, and sealing rings are arranged inside the waterproof ring and the water seal ring to isolate water and dust. The two sealing rings isolate the cooling water outside. The double sealing has a very strong isolation effect, avoiding the cooling water from entering the bearing seat and affecting the normal operation of the ball, reducing the risk of shaft burning and minimizing production losses.
[0016] In the second aspect, a rolling mill bearing seat assembly is provided, including:
[0017] A bearing seat body, with a rolling mill roll rotatably connected in the middle; and
[0018] Two rolling mill bearing seat sealing structures as described in any one of the above possible implementations, symmetrically arranged on both sides of the bearing seat body and coaxially sleeved on the rolling mill roll. The water seal ring in the rolling mill bearing seat sealing structure abuts against the limiting protrusion on the rolling mill roll.
[0019] In combination with the second aspect, in a possible implementation, a wear-resistant ring is provided at one axial end of the waterproof ring facing the bearing seat body, and the wear-resistant ring abuts against the side surface of the bearing seat body.
[0020] In combination with the second aspect, in a possible implementation, a sealing ring is clamped between the axial end surface of the waterproof ring and the bearing seat body, and the axis of the sealing ring coincides with the axis of the rolling mill roll.
[0021] In combination with the second aspect, in a possible implementation, a plurality of guiding blocks are evenly arranged on the sealing ring, and a plurality of guiding grooves are provided on the side of the bearing seat body. The guiding grooves correspond to the guiding blocks one by one, and the guiding blocks are in clamping fit with the corresponding guiding grooves to limit the displacement of the sealing ring in its own circumferential direction.
[0022] The mill bearing housing assembly provided by the present utility model, compared with the prior art, provides a sealing structure. A waterproof ring and a water seal ring are arranged between the roll and the seal seat, and sealing rings are arranged inside the waterproof ring and the water seal ring to isolate water and dust. The two sealing rings isolate the cooling water outside. The double sealing has a very strong isolation effect, preventing the cooling water from entering the bearing housing and affecting the normal operation of the ball, reducing the risk of shaft burning and minimizing production losses. Two symmetrical mill bearing housing sealing structures are arranged on both sides of the bearing housing main body, improving the waterproof effect on the bearing housing main body from both sides, preventing the cooling water from interfering with the bearing, prolonging the service life of the bearing, and improving the overall service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0024] Figure 1 Structural schematic diagram of the mill bearing housing sealing structure provided in Embodiment 1 of the present utility model;
[0025] Figure 2 is Figure 1 Cross-sectional schematic diagram of;
[0026] Figure 3 Schematic diagram of the mill bearing housing assembly provided in Embodiment 1 of the present utility model;
[0027] Figure 4 is Figure 3 Side view of;
[0028] Figure 5 is Figure 3 Assembly cross-sectional view of the mill bearing housing sealing structure and the roll in;
[0029] Figure 6 Explosion schematic diagram of the seal ring and the bearing housing main body provided in Embodiment 2 of the present utility model;
[0030] Figure 7 is Figure 6 Front view of the bearing housing main body in.
[0031] Explanation of the reference numerals:
[0032] 1. Waterproof ring; 11. Installation ring groove; 12. Wear-resistant ring;
[0033] 2. Water seal ring; 21. Fixed ring groove; 22. Baffle; 23. Abutting ring;
[0034] 3. Sealing ring; 31. Waterproof sealing ring; 32. Dust-proof sealing ring;
[0035] 4. Bearing seat body; 41. Guide groove;
[0036] 5. Roll; 51. Limit projection;
[0037] 6. Sealing ring; 61. Guide block. Detailed implementation manners
[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0039] It should be noted that the orientation or positional relationship indicated by terms such as "length", "width", "height", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the utility model.
[0040] It should also be noted that unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", "setting", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0041] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In addition, the meanings of "multiple" and "several" are two or more, unless otherwise clearly and specifically defined.
[0042] Please refer to Figures 1 to 7, the sealing structure of the rolling mill bearing housing provided by the present utility model will now be described. The sealing structure of the rolling mill bearing housing includes a waterproof ring 1, a water seal ring 2, and a plurality of sealing rings 3. An installation ring groove 11 is formed inside the waterproof ring 1; the water seal ring 2 is coaxially connected to the waterproof ring 1, a fixing ring groove 21 is formed on the inner side surface of the water seal ring 2, and an annular baffle 22 is coaxially provided at one axial end of the water seal ring 2 away from the waterproof ring 1, and an installation opening for sleeving a rolling roll 5 is formed in the middle of the baffle 22; the plurality of sealing rings 3 are respectively installed in the installation ring groove 11 and the fixing ring groove 21, and are respectively attached to the outer circumference of the rolling roll 5.
[0043] It should be noted that the waterproof ring 1 and the water seal ring 2 are arranged between the rolling roll 5 and the bearing housing main body 1, and the two sealing rings 3 isolate the cooling water to prevent the cooling water from entering the bearing housing main body 1.
[0044] During specific implementation, the waterproof ring 1 and the water seal ring 2 are coaxially and integrally arranged, the installation ring groove 11 and the fixing ring groove 21 have the same shape and size, and the two sealing rings 3 are coaxially arranged to improve the waterproof and sealing effect.
[0045] It should be noted that both the installation ring groove 11 and the fixing ring groove 21 are annular grooves with inner circumferential openings. After the sealing rings 3 are installed, axial and radial limits are respectively imposed on the sealing rings 3.
[0046] It should be noted that in the prior art, a shoulder pressing ring is sleeved on the rolling roll 5, and the shoulder pressing ring is an iron component, which belongs to a rigid seal, and the cooling water easily enters the bearing housing through the gap between the shoulder pressing ring and the bearing housing.
[0047] Compared with the prior art, the sealing structure of the rolling mill bearing housing provided in this embodiment provides a sealing structure. A waterproof ring 1 and a water seal ring 2 are arranged between the rolling roll 5 and the seal seat, and sealing rings 3 are arranged inside the waterproof ring 1 and the water seal ring 2 to isolate water and dust. The two sealing rings 3 isolate the cooling water outside, and the double sealing has a very strong isolation effect, preventing the cooling water from entering the bearing housing and affecting the normal operation of the ball, reducing the risk of shaft burning, and reducing production losses.
[0048] In some embodiments, the waterproof ring 1 and the water seal ring 2 are integrally cast. The integral casting of the waterproof ring 1 and the water seal ring 2 can reduce the number of contact gaps, and there are only the gaps between the waterproof ring 1 and the bearing housing main body 4, and between the water seal ring 2 and the rolling roll 5, reducing the probability of the cooling water entering the bearing housing main body 4. The integral casting of the waterproof ring 1 and the water seal ring 2 can also improve the connection strength. There is no gap between the waterproof ring 1 and the water seal ring 2, improving the strength of the overall structure. When installing, the waterproof ring 1 and the water seal ring 2 are integrally connected to the rolling roll 5, reducing the installation difficulty.
[0049] In some embodiments, refer to Figure 5, the sealing ring 3 includes a waterproof sealing ring 31 and a dustproof sealing ring 32. The waterproof sealing ring 31 is installed in the installation ring groove 11, and the dustproof sealing ring 32 is installed in the fixed ring groove 21. The sealing ring 3 is divided into two types. The waterproof sealing ring 31 undertakes most of the waterproof work, and the dustproof sealing ring 32 can prevent dust and further prevent water, improving the isolation effect on the cooling water and better protecting the bearing seat body 4 to avoid the cooling water entering the bearing seat body 4.
[0050] During specific implementation, the waterproof sealing ring 31 is in interference fit with the installation ring groove 11 to fix the waterproof sealing ring 31, and the dustproof sealing ring 32 is in interference fit with the fixed ring groove 21 to fix the dustproof sealing ring 32.
[0051] As another embodiment of the sealing ring 3, the two sealing rings 3 are made of the same material. The sealing ring 3 installed in the installation ring groove 11 plays the role of waterproof and dustproof, and the sealing ring 3 installed in the fixed ring groove 21 assists the other sealing ring 3 in waterproof and dustproof, achieving a secondary sealing effect.
[0052] In some embodiments, refer to Figure 2 , the inner diameter of the baffle 22 gradually decreases in the direction away from the waterproof ring 1. The baffle 22 is a conical cylindrical member. As a transition plate, it supports the water seal ring 2. The other end of the baffle 22 abuts against the limit protrusion 51 of the roll 5 for waterproofing, eliminating the need to additionally set a retaining ring or component for waterproofing and increasing the installation convenience. The conical cylindrical member has extremely high strength in the axial direction of the roll 5. When the waterproof ring 1 and the water seal ring 2 are installed between the bearing seat body 4 and the roll 5, the baffle 22 will not be squeezed and deformed, ensuring the use effect and extending the service life of the sealing structure.
[0053] In some embodiments, refer to Figure 2 , a butting ring 23 is provided at one end of the baffle 22 away from the waterproof ring 1. One axial end of the butting ring 23 away from the baffle 22 is used to abut against the limit protrusion 51 on the roll 5. The butting ring 23 abuts against the limit protrusion 51, improving the sealing effect between the baffle 22 and the limit protrusion 51, preventing the cooling water from entering, and ensuring the normal use of the bearing seat body 4.
[0054] During specific implementation, the butting ring 23, the baffle 22, and the water seal ring 2 are integrally formed.
[0055] During specific implementation, setting the limit protrusion 51 on the part of the roll 5 close to the bearing seat body 4 is prior art, ensuring the accurate installation and use safety of the roll 5.
[0056] In some embodiments, the sealing ring 3 is a silicone ring or a rubber ring. The silicone material has good sealing performance and long service life, meeting the use requirements; while the rubber material has good elasticity and sealing performance, also meeting the use effect and being able to isolate the cooling water.
[0057] During specific implementation, the sealing ring 3 is fitted into the mounting ring groove 11 and the fixed ring groove 21.
[0058] Based on the same inventive concept, referring to Figures 3 to 7 , the present application also provides a rolling mill bearing housing assembly, which includes a bearing housing main body 4 and two rolling mill bearing housing sealing structures as described in any one of the above embodiments. A rolling roll 5 is rotatably connected to the middle of the bearing housing main body 4; the two rolling mill bearing housing sealing structures are symmetrically arranged on both sides of the bearing housing main body 4 and coaxially sleeved on the rolling roll 5, and the water sealing ring 2 in the rolling mill bearing housing sealing structure abuts against the limiting protrusion 51 on the rolling roll 5.
[0059] It should be noted that the rolling roll 5 is provided with limiting protrusions 51 at the parts corresponding to both sides of the bearing housing main body 4. The function of the limiting protrusions 51 is to cooperate with the bearing housing main body 4 to provide a clamping space, and a sealing structure is arranged in the clamping space, such as the frying chicken sealing seat sealing structure of the present application, to seal the gap between the bearing housing main body 4 and the rolling roll 5.
[0060] During specific implementation, the two rolling mill bearing housing sealing structures are symmetrically arranged on both sides of the bearing housing main body 4 to form an integrated two-way sealing system, further improving the isolation effect on cooling water.
[0061] Compared with the prior art, the rolling mill bearing housing assembly provided in this embodiment provides a sealing structure. A waterproof ring 1 and a water sealing ring 2 are arranged between the rolling roll 5 and the sealing seat, and sealing rings 3 are arranged inside the waterproof ring 1 and the water sealing ring 2 to isolate water and dust. The two sealing rings 3 isolate the cooling water outside. The double sealing has a very strong isolation effect, preventing the cooling water from entering the bearing housing and affecting the normal operation of the rolling balls, reducing the risk of shaft burning and minimizing production losses. Two symmetric rolling mill bearing housing sealing structures are arranged on both sides of the bearing housing main body 4 to improve the waterproof effect on the bearing housing main body 4 from both sides, preventing the cooling water from interfering with the bearing, prolonging the service life of the bearing, and improving the overall service life of the equipment.
[0062] In some embodiments, a wear-resistant ring 12 is provided at one axial end of the waterproof ring 1 facing the bearing housing main body 4, and the wear-resistant ring 12 abuts against the side surface of the bearing housing main body 4. The wear-resistant ring 12 can rub against the side of the bearing housing main body 4. When it is worn, the wear-resistant ring 12 is worn, preventing the waterproof ring 1 from being worn, reducing the loss of the sealing structure, prolonging the working time of the wear-resistant ring 12, and improving the service life of the waterproof ring 1.
[0063] In some embodiments, referring to Figure 6, a sealing ring 6 is clamped between the axial end face of the waterproof ring 1 and the bearing seat body 4, and the axis of the sealing ring 6 overlaps with the axis of the roll 5. The sealing ring 6 is clamped between the waterproof ring 1 and the side surface of the bearing seat body 4, which can improve the sealing effect between the waterproof ring 1 and the side of the bearing seat body 4 and further prevent the cooling water from entering the inside of the bearing seat body 4.
[0064] Specifically, the sealing ring 6 is a rubber ring. The rubber ring has a certain strength and can be compressed and deformed to fill the gap between the waterproof ring 1 and the side of the bearing seat body 4, improving the sealing effect.
[0065] In some embodiments, referring to Figure 7 , a plurality of guide blocks 61 are evenly arranged on the sealing ring 6, and a plurality of guide grooves 41 are arranged on the side of the bearing seat body 4. The guide grooves 41 correspond to the guide blocks 61 one by one, and the guide blocks 61 are clamped and matched with the corresponding guide grooves 41 to limit the displacement of the sealing ring 6 in its own circumferential direction. The guide blocks 61 can position the sealing ring 6. When the sealing ring 6 is installed, the sealing ring 6 will not rotate and always remains relatively fixed with the bearing seat body 4, which is convenient for disassembly and assembly and reduces the operation difficulty.
[0066] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A rolling mill bearing seat sealing structure, characterized in that: include: A waterproof ring, with a mounting ring groove formed on the inner side; A water seal ring is coaxially connected to the waterproof ring, a fixed ring groove is formed on the inner side of the water seal ring, an annular baffle is coaxially provided at one axial end of the water seal ring away from the waterproof ring, and a mounting opening for sleeve mounting of a roller is provided in the middle of the baffle; and A plurality of sealing rings are respectively installed in the installation ring groove and the fixed ring groove, and are respectively fitted with the outer circumference of the roller.
2. The rolling mill bearing seat sealing structure according to claim 1, characterized in that: The waterproof ring and the water sealing ring are integrally cast.
3. The rolling mill bearing seat sealing structure according to claim 1, characterized in that: The sealing ring comprises a waterproof sealing ring and a dustproof sealing ring. The waterproof sealing ring is installed in the installation ring groove, and the dustproof sealing ring is installed in the fixed ring groove.
4. The rolling mill bearing seat sealing structure according to claim 1, characterized in that: The inner diameter of the baffle gradually decreases in a direction away from the waterproof ring.
5. The rolling mill bearing seat sealing structure according to claim 4, characterized in that: An abutment ring is provided at one end of the baffle away from the waterproof ring, and an axial end of the abutment ring away from the baffle is used to abut against a limiting protrusion on the roller.
6. The rolling mill bearing seat sealing structure according to claim 1, characterized in that: The sealing ring is a silicone ring or a rubber ring.
7. A rolling mill bearing seat assembly, characterized in that: include: A bearing seat body, the middle part of which is rotatably connected to a roller; and Two rolling mill bearing seat sealing structures as described in any one of claims 1-6 are symmetrically arranged on both sides of the bearing seat body and coaxially sleeved on the rolling roller, and the water seal ring in the rolling mill bearing seat sealing structure abuts against the limiting protrusion on the rolling roller.
8. The rolling mill bearing seat assembly according to claim 7, characterized in that: A wear-resistant ring is provided at one axial end of the waterproof ring facing the bearing seat body, and the wear-resistant ring abuts against the side surface of the bearing seat body.
9. The rolling mill bearing seat assembly according to claim 7, characterized in that: A sealing ring is sandwiched between the waterproof ring and the axial end surface of the bearing seat body, and the axis of the sealing ring overlaps with the axis of the roller.
10. The rolling mill bearing seat assembly according to claim 9, characterized in that: A plurality of guide blocks are evenly arranged on the sealing ring, and a plurality of guide grooves are arranged on the side of the bearing seat body. The guide grooves correspond to the guide blocks one by one, and the guide blocks are engaged with the corresponding guide grooves to limit the displacement of the sealing ring in its own circumferential direction.