Split cylindrical roller bearing with dismounting process hole and mechanical device
By setting disassembly process holes on the end face of the outer ring half of the split cylindrical roller bearing and using a top-stop structure to separate the outer ring half, the problem of damage to the split surface in traditional disassembly methods is solved, achieving smooth separation and precise mating, and improving the rotational accuracy and life of the bearing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NORTHWEST BEARING CO LTD
- Filing Date
- 2025-09-22
- Publication Date
- 2026-06-26
AI Technical Summary
Traditional split bearings are prone to damage to the precision split surface during disassembly, resulting in the outer ring not being able to align precisely after reassembly, which affects the bearing's rotational accuracy and service life.
A disassembly process hole is provided on the end face of the outer ring half of the split cylindrical roller bearing. The outer ring half is separated by pushing out through the process hole using a top-stop structure. Combined with a guide structure, the separation process is guided, avoiding the need to pry it open directly with a flathead screwdriver.
It protects the flatness of the bearing split surface, prevents misalignment or jamming during separation, ensures a high success rate of disassembly, and extends the service life of the bearing.
Smart Images
Figure CN224414147U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical parts technology, and in particular to a split cylindrical roller bearing and mechanical equipment with disassembly process holes. Background Technology
[0002] Split bearings are widely used in large equipment with long shafts, crankshafts, or limited space, such as rolling mills, large fans, and continuous casting machines.
[0003] Traditional split bearings consist of an inner ring, an outer ring, and a cage. The outer ring is radially split into two semi-rings, which are connected and secured by fastening bolts. During disassembly, the fastening bolts are typically loosened first, and then tools such as a flathead screwdriver are used to forcibly pry the bearing open from the seam between the split surfaces.
[0004] However, this disassembly method can easily damage the precision split surface. Specifically, the prying operation can easily damage the flatness of the split surface, causing the outer ring to fail to align precisely after reassembly, resulting in a gap or stress concentration, which seriously affects the rotational accuracy and service life of the bearing. Utility Model Content
[0005] This utility model provides a split cylindrical roller bearing and mechanical equipment with disassembly process holes, which solves the technical problem in the prior art that the outer ring split surface is damaged due to the use of tools such as flathead screwdrivers to forcibly pry it open from the split surface gap of the outer ring.
[0006] The above-mentioned objectives of this utility model can be achieved by the following technical solutions:
[0007] This utility model provides a split cylindrical roller bearing with a disassembly process hole, including an outer ring; the outer ring includes a first outer ring half-ring and a second outer ring half-ring; the first outer ring half-ring includes a first end; the second outer ring half-ring includes a second end, the end face of the second end having a guide hole; the end face of the first end is provided with a guide structure, which is slidably fitted with the guide hole; the end face of the first end has a disassembly process hole, the disassembly process hole is configured as a through hole, the center line of which is perpendicular to the end face of the first end, the disassembly process hole is used for an external abutment structure to extend into, when the abutment structure extends into the disassembly process hole, the abutment structure abuts against the end face of the second end, so as to separate the first outer ring half-ring and the second outer ring half-ring.
[0008] According to one embodiment of the present invention, the disassembly process hole is a screw hole, which is used to mate with the threaded section of the side wall of the top abutment structure.
[0009] According to one embodiment of the present invention, the abutting structure includes a screw and a flexible abutting component; the side wall of the screw has the threaded section; the flexible abutting component is disposed at the end of the screw and is used to abut against the end face of the second end when the abutting structure is inserted through the disassembly process hole, so as to prevent damage to the end face of the second end.
[0010] According to one embodiment of the present invention, the flexible abutment component is a structural component made of rubber material.
[0011] According to one embodiment of the present invention, the outer diameter of the flexible abutment component is gradually increased along the direction from the first outer ring to the second outer ring.
[0012] According to one embodiment of the present invention, the guide structure includes a first guide component and a second guide component; the disassembly process hole is located between the first guide component and the second guide component.
[0013] According to one embodiment of the present invention, the end face of the first end has a blind hole; the guide structure is disposed in the bottom of the blind hole; the sidewall of the blind hole is configured as a protective structure for protecting the guide structure, and the protective structure is disposed around the guide structure; the disassembly process hole is connected to the blind hole.
[0014] According to one embodiment of the present invention, the sidewall of the blind hole is provided with reinforcing ribs.
[0015] According to one embodiment of the present invention, the second end has a split surface protection groove; the top abutment structure is used to abut the bottom of the split surface protection groove when it extends through the disassembly process hole.
[0016] This utility model also provides a mechanical device, including the split cylindrical roller bearing with disassembly process holes as described above.
[0017] The features and advantages of this utility model of a split cylindrical roller bearing with a disassembly process hole and a mechanical device are as follows:
[0018] By providing a disassembly process hole on the end face of the first outer ring half-ring, a base is provided for the insertion of the top-stopping structure. After extending through the disassembly process hole, the top-stopping structure applies a push-out force to the second outer ring half-ring, thereby separating the first and second outer ring half-rings. This eliminates the need for tools such as flathead screwdrivers, avoiding direct contact and damage to the precision split surface, and effectively protecting the flatness of the bearing split surface. Simultaneously, during the push-out separation process, the guide structure and guide hole continuously function, constraining and guiding the relative movement of the two half-rings, ensuring they separate along the push-out direction, effectively preventing separation misalignment or jamming caused by uneven force. This solves the technical problem in existing technologies where the outer ring split surface is damaged due to forcibly prying it open from the gap using tools such as flathead screwdrivers. Attached Figure Description
[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 This is an exploded view of the outer ring of a split cylindrical roller bearing with disassembly process holes according to this utility model.
[0021] Figure 2 yes Figure 1 Enlarged view of section A in the middle;
[0022] Figure 3 This is a perspective view of a split cylindrical roller bearing with disassembly process holes according to this utility model.
[0023] Figure 4 This is an exploded view of a split cylindrical roller bearing with disassembly process holes according to this utility model.
[0024] Explanation of reference numerals in the attached figures:
[0025] 10. Outer ring; 1. First outer ring half ring; 11. First end; 111. Disassembly process hole; 112. Blind hole; 12. Guide structure; 121. First guide component; 122. Second guide component; 2. Second outer ring half ring; 21. Second end; 211. Guide hole; 212. Split surface protection groove. Detailed Implementation
[0026] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] Implementation Method 1
[0030] like Figures 1 to 4 As shown, this utility model provides a split cylindrical roller bearing with a disassembly process hole, including an outer ring 10; the outer ring 10 includes a first outer ring half ring 1 and a second outer ring half ring 2; the first outer ring half ring 1 includes a first end 11; the second outer ring half ring 2 includes a second end 21, the end face of the second end 21 has a guide hole 211; the end face of the first end 11 is provided with a guide structure 12, which is slidably fitted into the guide hole 211; the end face of the first end 11 has a disassembly process hole 111, which is configured as a through hole with its center line perpendicular to the end face of the first end 11. The disassembly process hole 111 is used to allow an external abutment structure to extend into it. When the abutment structure extends into the disassembly process hole 111, the abutment structure abuts against the surface of the second end 21, so as to separate the first outer ring half ring 1 and the second outer ring half ring 2.
[0031] In specific implementation, a disassembly process hole 111 is provided on the end face of the first outer ring half-ring 1, providing a foundation for the insertion of the abutment structure. After the abutment structure extends into the disassembly process hole 111, it applies an ejection force to the second outer ring half-ring 2, thereby separating the first outer ring half-ring 1 from the second outer ring half-ring 2. This eliminates the need for tools such as flathead screwdrivers, avoiding direct contact and damage to the precision split surface, and effectively protecting the flatness of the bearing split surface. Simultaneously, during the ejection separation process, the guide structure 12 and guide hole 211 continuously function, constraining and guiding the relative movement of the two half-rings, ensuring they separate along the ejection direction, effectively preventing separation misalignment or jamming caused by uneven force. This solves the technical problem in the prior art where the split surface of the outer ring 10 is damaged due to the use of tools such as flathead screwdrivers to forcibly pry it open from the gap in the split surface.
[0032] In this embodiment, the abutment structure can be a cylinder. The centerline of the guide hole 211 can be parallel to the centerline of the disassembly process hole 111. The guide structure 12 can extend in a direction parallel to the centerline of the disassembly process hole 111. The end face of the first end 11 and the end face of the second end 21 can be a split surface.
[0033] According to one embodiment of the present invention, the disassembly process hole 111 is a screw hole, used to mate with the threaded section of the side wall of the top abutment structure.
[0034] In practice, the disassembly process hole 111 is set as a screw hole and is used in conjunction with a threaded top abutment structure. By utilizing the principle of screw transmission, the rotational torque applied by the operator can be converted into a smooth axial ejection force, so that the ejection force can be precisely controlled, avoiding damage to the end face (split surface) of the second end 21 due to excessive ejection force.
[0035] According to one embodiment of the present invention, the abutting structure includes a screw and a flexible abutting component; the side wall of the screw has a threaded section; the flexible abutting component is disposed at the end of the screw and is used to abut the end face of the second end 21 when the abutting structure is inserted through the disassembly process hole 111, so as to prevent damage to the end face of the second end 21.
[0036] In specific implementation, a flexible abutment component is added to the end of the abutment structure. When abutting the end face of the second outer ring 2, the flexible component plays the role of buffering and dispersing pressure, avoiding hard contact between the metal screw and the metal split surface, and ensuring that the end face of the second end 21 will not be damaged during ejection.
[0037] According to one embodiment of the present invention, the flexible abutment component is a structural component made of rubber material.
[0038] In practice, by using rubber materials, the durability of the flexible abutment components is enhanced due to their wear resistance.
[0039] According to one embodiment of the present invention, the outer diameter of the flexible abutment component is gradually increased along the direction from the first outer ring 1 to the second outer ring 2.
[0040] In practice, by setting the outer diameter of the flexible abutment component to a gradually expanding structure, the contact area is larger when it contacts the end face of the second outer ring 2, so that the pressure is more evenly distributed on the abutted surface, further optimizing the protection effect on the split surface.
[0041] According to one embodiment of the present invention, the guide structure 12 includes a first guide component 121 and a second guide component 122; the disassembly process hole 111 is located between the first guide component 121 and the second guide component 122.
[0042] In practice, it is positioned between two guide components. This arrangement allows the ejection force applied through the process hole to act relatively evenly across the entire split surface, which helps the two outer ring halves separate smoothly and parallel to each other along the direction of the guide structure 12. This avoids the risk of the half-rings tilting due to uneven force, which could lead to jamming or wear with the guide structure 12, and improves the success rate of the disassembly operation.
[0043] According to one embodiment of the present invention, the end face of the first end 11 has a blind hole 112; the guide structure 12 is disposed in the bottom of the blind hole 112; the side wall of the blind hole 112 is configured as a protective structure for protecting the guide structure 12, and the protective structure is disposed around the guide structure 12; the disassembly process hole 111 is connected to the blind hole 112.
[0044] In practice, the guide structure 12 is placed at the bottom of the blind hole 112, and a surrounding protective structure is formed by utilizing the sidewall of the blind hole 112. This "submerged" design can effectively protect the delicate and relatively fragile guide structure 12, preventing it from being subjected to accidental radial impacts during bearing handling, installation, or non-operating conditions.
[0045] According to one embodiment of the present invention, the sidewall of the blind hole 112 is provided with reinforcing ribs.
[0046] In practice, the above-mentioned structural design enhances the robustness of the protective structure.
[0047] According to one embodiment of the present invention, the second end 21 has a split surface protection groove 212; the top abutment structure is used to abut the bottom of the split surface protection groove 212 when it is inserted through the disassembly process hole 111.
[0048] In specific implementation, a protective groove 212 for the split surface is pre-set on the end face of the second outer ring 2 that is being pushed against, and the point of application of the pushing force is clearly limited to the bottom of the protective groove. This design ensures that the pushing structure does not come into contact with the split surface, which serves as a precision fitting reference, during disassembly, fundamentally eliminating the possibility of any damage to the precision of the split surface caused by the disassembly operation. In other words, the split surface is not directly pushed against during ejection.
[0049] Implementation Method 2
[0050] This utility model also provides a mechanical device, including a split cylindrical roller bearing with a disassembly process hole as described in the above embodiment. The specific structure, working principle, and beneficial effects of the split cylindrical roller bearing with the disassembly process hole 111 are the same as those in Embodiment 1, and will not be repeated here.
[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A split cylindrical roller bearing having a dismounting process hole, characterized in that, Including the outer ring (10); The outer ring (10) includes a first outer ring half ring (1) and a second outer ring half ring (2); The first outer ring (1) includes a first end (11); The second outer ring (2) includes a second end (21), and the end face of the second end (21) has a guide hole (211). The end face of the first end (11) is provided with a guide structure (12) and is slidably fitted into the guide hole (211). The end face of the first end (11) has a disassembly process hole (111). The disassembly process hole (111) is configured as a through hole with its center line perpendicular to the end face of the first end (11). The disassembly process hole (111) is used to allow an external abutment structure to extend into it. When the abutment structure extends into the disassembly process hole (111), the abutment structure abuts against the end face of the second end (21) to separate the first outer ring half ring (1) and the second outer ring half ring (2).
2. The split cylindrical roller bearing with disassembly process holes according to claim 1, characterized in that, The disassembly process hole (111) is a screw hole, used to mate with the threaded section of the side wall of the top abutment structure.
3. The split cylindrical roller bearing with disassembly process holes according to claim 2, characterized in that, The abutment structure includes a screw and a flexible abutment component; The screw has the threaded section on its sidewall; The flexible abutting component is disposed at the end of the screw and is used to abut the end face of the second end (21) when the abutting structure is inserted through the disassembly process hole (111) to prevent damage to the end face of the second end (21).
4. The split cylindrical roller bearing with disassembly process holes according to claim 3, characterized in that, The flexible abutment component is a structural part made of rubber material.
5. The split cylindrical roller bearing with disassembly process holes according to claim 3, characterized in that, The outer diameter of the flexible abutment component is gradually increased along the direction from the first outer ring (1) to the second outer ring (2).
6. The split cylindrical roller bearing with disassembly process holes according to claim 1, characterized in that, The guide structure (12) includes a first guide component (121) and a second guide component (122); The disassembly process hole (111) is located between the first guide component (121) and the second guide component (122).
7. The split cylindrical roller bearing with disassembly process holes according to claim 1, characterized in that, The end face of the first end (11) has a blind hole (112). The guide structure (12) is disposed in the bottom of the blind hole (112); the sidewall of the blind hole (112) is configured as a protective structure for protecting the guide structure (12), and the protective structure is disposed around the guide structure (12); The disassembly process hole (111) is connected to the blind hole (112).
8. The split cylindrical roller bearing with disassembly process holes according to claim 7, characterized in that, The sidewall of the blind hole (112) is provided with reinforcing ribs.
9. The split cylindrical roller bearing with disassembly process holes according to claim 1, characterized in that, The second end (21) has a split surface protection groove (212); The abutting structure is used to abut the bottom of the split surface protection groove (212) when it is inserted through the disassembly process hole (111).
10. A mechanical device, characterized in that, Includes split cylindrical roller bearings with disassembly process holes as described in any one of claims 1 to 9.