An enhanced fully dissected electric corrosion-resistant rolling bearing and its installation method

Abstract

An enhanced fully split electrically corrosion-resistant rolling bearing and its installation method, which relates to the technical field of fully split bearing design. Its structure includes: a split inner ring, an outer ring, and a cage roller assembly. The inner ring includes a split inner ring one and a split inner ring two, and a clamping ring for fixing the split inner ring one and the split inner ring two into a ring. At both connection points of the split inner ring one and the split inner ring two, there is a snap structure for circumferentially fixing the split inner ring one and the split inner ring two. The snap structure includes a protruding wedge-shaped structure provided on the split inner ring one and a groove structure provided on the split inner ring two that cooperates with the wedge-shaped structure. Sliding the split inner ring one and the split inner ring two relative to each other along the axis of the bearing can achieve the clamping and separation of the snap structure. The cage roller assembly includes rollers, and an insulating coating for reducing the electrochemical corrosion of the bearing is provided on the surface of the rollers. Applying the present invention can solve the technical problem that the application scenario of existing fully split bearings is limited due to their low service performance.

Description

Technical Field

[0001] The present invention relates to the technical field of fully split bearing design, and more particularly to a reinforced fully split electrically corrosion-resistant rolling bearing and its installation method. Background Art

[0002] In application scenarios where it is very difficult to replace bearings, using fully split rolling bearings is a very important option. Most installation and disassembly steps can be omitted, such as removing gears, clutches, and transmission units, etc., which can significantly reduce the bearing installation and disassembly costs.

[0003] Electric corrosion failure is a common failure mode of bearings. Bearing failures caused by electric corrosion seriously affect the reliability of the whole machine, such as in the field of offshore wind power.

[0004] Currently, most fully split rolling bearings use wire cutting to divide parts such as the bearing outer ring, inner ring, cage roller assembly, etc. into two halves with a small V-shaped angle, and then clamp them together with bolts during installation. In addition, not enough attention has been paid to preventing electric corrosion.

[0005] The defects of existing fully split rolling bearings are as follows: ① An interference fit is usually used between the inner diameter of the rolling bearing and the main shaft. After the bearing is installed on the main shaft, whether there is a clamping ring on the inner ring of the bearing or not, it is only clamped by bolts, and the inner ring of the bearing is prone to micro-expansion due to stress; ② The rolling bearing transmits loads through the inner diameter of the bearing during operation, and the micro-expansion phenomenon of the inner ring of the bearing will be further aggravated, and the fastening bolts of the inner ring may also cause fatigue fracture due to long-term tensile stress; ③ There is a certain edge effect at the gap of the wire cutting joint surface of the outer ring and the inner ring; ④ There is no targeted design for the common electric corrosion phenomenon of bearings.

[0006] The existence of the above defects results in a significant reduction in the service performance of fully split bearings, thereby limiting the application scenarios of fully split rolling bearings. Summary of the Invention

[0007] The purpose of the present invention is to provide a reinforced fully split electrically corrosion-resistant rolling bearing and its installation method, which can solve the technical problem that the application scenarios of existing fully split bearings are limited due to their low service performance.

[0008] To achieve the above purpose, the present invention adopts the following technical solutions.

[0009] A reinforced fully split electrically corrosion-resistant rolling bearing includes a split bearing inner ring, a bearing outer ring, and a cage roller assembly. The bearing inner ring includes a split inner ring one and a split inner ring two, and the split inner ring one and the split inner ring two are fixed into a ring by a clamping ring.

[0010] At both connection points between the split inner ring one and the split inner ring two, there are snap structures for circumferentially fixing the split inner ring one and the split inner ring two. The snap structure includes a protruding wedge-shaped structure provided on the split inner ring one and a groove structure provided on the split inner ring two that cooperates with the wedge-shaped structure. Sliding the split inner ring one and the split inner ring two relative to each other along the axis of the bearing can achieve the clamping and separation of the snap structure.

[0011] The cage-roller assembly includes rollers, and an insulating coating for reducing the electrochemical corrosion of the bearing is provided on the surface of the rollers.

[0012] Further, the split inner ring one is provided with wedge-shaped structures at both axial ends of the connection surface with the split inner ring two, and the split inner ring two is provided with groove structures at positions corresponding to the wedge-shaped structures for cooperating with the wedge-shaped structures.

[0013] Further, one clamping ring is provided at each of the axial ends of the bearing inner ring, and there is an interference fit between the inner diameter of the clamping ring and the outer diameter of the bearing inner ring.

[0014] Further, the bearing outer ring includes a split outer ring one and a split outer ring two. The connection surface between the split outer ring one and the split outer ring two is a V-shaped surface. Outer ring positioning pins are provided at the connection points between the split outer ring one and the split outer ring two, and the split outer ring one and the split outer ring two are fixedly connected by outer ring set screws.

[0015] Further, the rollers (31) use DLC surface coating technology to generate a coating with insulating effect on their surfaces.

[0016] Further, the cage-roller assembly further includes two split cage assemblies. The rollers are rotatably arranged on the split cage assemblies. Cage positioning pins are provided at the connection surfaces of the two split cage assemblies, and the two split cage assemblies are fixedly connected by cage set screws and cage connecting plates.

[0017] Further, the clamping ring includes a split clamping ring one and a split clamping ring two, and the split clamping ring one and the split clamping ring two are fixedly connected by a clamping ring set screw.

[0018] Further, the plane where the connection surface of the split clamping ring one and the split clamping ring two is located is perpendicular to the plane where the connection surface of the split inner ring one and the split inner ring two is located.

[0019] Further, the split inner ring one and the split inner ring two are made by wire cutting from the same complete bearing inner ring.

[0020] An installation method for a reinforced fully split electrically corrosion-resistant rolling bearing includes the following steps.

[0021] Step 1: Install the split inner ring 1 at the corresponding position of the main shaft, and apply grease on the joint surfaces of the split inner ring 1 and the split inner ring 2. The split inner ring 2 is axially misaligned with the split inner ring 1 and the joint surfaces are fitted together. Slide the split inner ring 2 axially to make the groove structure cooperate with the wedge structure.

[0022] Step 2: Install clamping rings at both axial ends of the bearing inner ring. When installing, the plane where the joint surface of the split clamping ring 1 and the split clamping ring 2 is located is perpendicular to the plane where the joint surface of the split inner ring 1 and the split inner ring 2 is located. The split inner ring 1, the split inner ring 2 and the clamping ring together form the bearing inner ring.

[0023] Step 3: Combine and install the two split cage assemblies at the corresponding positions of the bearing inner ring by using cage positioning pins and cage set screws.

[0024] Step 4: Apply grease on the joint surfaces of the split outer ring 1 and the split outer ring 2, and combine and install them at the corresponding positions of the cage roller assembly by using outer ring positioning pins and outer ring set screws. The split outer ring 1 and the split outer ring 2 together form the bearing outer ring.

[0025] Step 5: Install the bearing outer ring into the bearing housing, and the installation is completed.

[0026] Further, in Step 1, both the split inner ring 1 and the split inner ring 2 need to be heat-treated before installation.

[0027] Further, in Step 5, install the bearing outer ring at the corresponding position of the bearing base. After heating the part of the bearing housing cover in contact with the bearing outer ring, hoist the bearing housing cover to cooperate with the bearing base, and fix and connect the bearing housing cover to the bearing base through the bearing housing positioning pins and the bearing housing set screws.

[0028] After adopting the above technical solutions, the present invention has the following beneficial effects:

[0029] 1. In the present invention, a snap structure for circumferentially fixing the bearing inner ring is provided at the joint of the split inner ring 1 and the split inner ring 2, and in combination with the clamping ring, full-range locking is achieved. The locking effect is more accurate and firm, inhibiting the micro-expansion phenomenon when the bearing inner ring is loaded, and avoiding excessive tension on the set screws for fixing the bearing inner ring, resulting in metal fatigue.

[0030] 2. In the present invention, the plane where the joint surface of the split clamping ring 1 and the split clamping ring 2 is located is perpendicular to the plane where the joint surface of the split inner ring 1 and the split inner ring 2 is located, which can optimize the force on the bearing inner ring and improve the overall stability.

[0031] 3. In the present invention, the joint surface of the split outer ring 1 and the split outer ring 2 is a V-shaped surface, and at the same time, outer ring positioning pins are provided. The positioning is more accurate through the double-positioning method of the V-shaped surface and the outer ring positioning pins.

[0032] 4. When the present invention is installed, by applying a small amount of grease to the respective connection surfaces of the inner race and the outer race of the bearing, the edge effect existing on the joint surface can be improved;

[0033] 5. The rollers in the present invention are treated with DLC surface coating technology, enabling the bearing to have a certain insulating effect and significantly improving the anti-electric corrosion performance of the bearing. Description of the Drawings

[0034] Figure 1 is the overall structural schematic diagram of the present invention.

[0035] Figure 2 is the sectional structural schematic diagram of the present invention.

[0036] Figure 3 is the exploded structural schematic diagram of the split inner race 1 and the split inner race 2 in the present invention.

[0037] Figure 4 is Figure 3 the enlarged structural schematic diagram of the snap structure in

[0038] Figure 5 is the schematic diagram of the angular relationship between the connection surface of the split inner race in the inner race of the bearing and the connection surface of the clamping ring.

[0039] Figure 6 is the overall structural schematic diagram of the split cage assembly and the rollers in the present invention.

[0040] Figure 7 is the exploded structural schematic diagram of the outer race of the bearing in the present invention.

[0041] Figure 8 is Figure 7 the enlarged structural schematic diagram of the position A in

[0042] Figure 9 is the schematic diagram of the state when the split inner race 1 is installed on the main shaft in Step 1.

[0043] Figure 10 is the schematic diagram of the state when the split inner race 2 is installed on the main shaft and is ready to cooperate with the split inner race 1 in Step 1.

[0044] Figure 11 is the schematic diagram of the state when Step 1 of the present invention is completed.

[0045] Figure 12 is the schematic diagram of the state when Step 2 of the present invention is completed.

[0046] Figure 13 is the schematic diagram of the state when Step 3 of the present invention is completed.

[0047] Figure 14 It is a schematic diagram of the state when Step 4 of the present invention is completed.

[0048] Figure 15 It is a schematic diagram of the state when the outer ring of the bearing is installed in the bearing base in Step 5 of the present invention.

[0049] Figure 16 It is a schematic diagram of the state when Step 5 of the present invention is completed.

[0050] Description of the drawings: 1. Inner ring of the bearing, 11. Split inner ring one, 12. Split inner ring two, 13. Clamping ring, 131. Split clamping ring one, 132. Split clamping ring two, 133. Clamping ring set screw, 14. Snap structure, 141. Wedge structure, 142. Groove structure, 2. Outer ring of the bearing, 21. Split outer ring one, 22. Split outer ring two, 23. Outer ring locating pin, 24. Outer ring set screw, 3. Cage and roller assembly, 31. Roller, 32. Split cage assembly, 33. Cage locating pin, 34. Cage set screw, 35. Cage connecting plate, 4. Main shaft, 5. Bearing housing, 51. Bearing base, 52. Bearing housing cover, 53. Bearing housing locating pin, 54. Bearing housing set screw. Detailed implementation manners

[0051] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the features and performances of a reinforced fully split electrically corrosion-resistant rolling bearing and its installation method in the present invention will be further described in detail below with reference to the drawings and embodiments.

[0052] Embodiment 1

[0053] Please refer to the attached Figures 1 - 8 , a reinforced fully split electrically corrosion-resistant rolling bearing, comprising a split inner ring 1 of the bearing, an outer ring 2 of the bearing, and a cage and roller assembly 3. The inner ring 1 of the bearing includes a split inner ring one 11 and a split inner ring two 12. The split inner ring one 11 and the split inner ring two 12 are fixed into a ring by a clamping ring 13. One clamping ring 13 is provided at each axial end of the inner ring 1 of the bearing. There is an interference fit between the inner diameter of the clamping ring 13 and the outer diameter of the inner ring 1 of the bearing.

[0054] The clamping ring 13 includes a split clamping ring one 131 and a split clamping ring two 132, and the split inner ring one 11 and the split inner ring two 12 are made by wire cutting from the same complete inner ring 1 of the bearing. The split clamping ring one 131 and the split clamping ring two 132 are fixedly connected by a clamping ring set screw 133.

[0055] At both connection points of the split inner ring one 11 and the split inner ring two 12, there is a snap structure 14 for circumferentially fixing the split inner ring one 11 and the split inner ring two 12. The snap structure 14 includes a protruding wedge-shaped structure 141 provided on the split inner ring one 11 and a groove structure 142 provided on the split inner ring two 12 and mating with the wedge-shaped structure 141. Sliding the split inner ring one 11 and the split inner ring two 12 relative to each other along the axis of the bearing can achieve the clamping and separation of the snap structure 14.

[0056] When specifically setting, the split inner ring one 11 is provided with wedge-shaped structures 141 at both axial ends of the connection surface with the split inner ring two 12, and the split inner ring two 12 is provided with groove structures 142 for mating with the wedge-shaped structures 141 at positions corresponding to the wedge-shaped structures 141.

[0057] Particularly, when using the clamping ring 13 to fix the bearing inner ring 1, the plane where the connection surface of the split clamping ring one 131 and the split clamping ring two 132 is located is perpendicular to the plane where the connection surface of the split inner ring one 11 and the split inner ring two 12 is located.

[0058] The bearing outer ring 2 includes a split outer ring one 21 and a split outer ring two 22. The connection surface of the split outer ring one 21 and the split outer ring two 22 is a V-shaped surface. Outer ring positioning pins 23 are provided at the connection points of the split outer ring one 21 and the split outer ring two 22, and the split outer ring one 21 and the split outer ring two 22 are fixedly connected by outer ring set screws 24.

[0059] The cage roller assembly 3 includes rollers 31. An insulating coating for slowing down the electrochemical corrosion of the bearing is provided on the surface of the rollers 31. The DLC surface coating technology is used on the surface of the rollers 31 to generate a coating with insulating effect.

[0060] The cage roller assembly 3 further includes two split cage assemblies 32. The rollers 31 are rotatably arranged on the split cage assemblies 32. Cage positioning pins 33 are provided at the connection surfaces of the two split cage assemblies 32, and the two split cage assemblies 32 are fixedly connected by cage set screws 34 and a cage connecting plate 35.

[0061] When specifically implementing, a reinforced fully split electrically corrosion-resistant rolling bearing and its support structure are composed of a reinforced fully split rolling bearing, a main shaft 4, a bearing base 51, a bearing housing upper cover 52, a bearing housing positioning pin 53, and a bearing housing set screw 54. The bearing housing 5 is composed of the bearing base 51 and the bearing housing upper cover 52. The two are positioned by the bearing housing positioning pin 53 and fastened by the bearing housing set screw 54 to form the bearing housing 5 as a whole for supporting the bearing outer ring 2.

[0062] The basic structure of the reinforced fully split rolling bearing is composed of a bearing inner ring 1, a bearing outer ring 2, and a cage roller assembly 3.

[0063] The basic structure of the bearing outer ring 2 consists of a split outer ring one 21, a split outer ring two 22, an outer ring locating pin 23, and an outer ring set screw 24. The bearing outer ring 2 uses the outer ring locating pin 23 and the double positioning method of cutting a small V-shaped surface to achieve more accurate positioning, and uses two rows of outer ring set screws 24 for fastening to achieve more reliable fastening.

[0064] The basic structure of the bearing inner ring 1 consists of a split inner ring one 11 and a split inner ring two 12. The basic structure of the clamping ring 13 consists of a split clamping ring one 131, a split clamping ring two 132, and a clamping ring set screw 133. The clamping ring 13 is in interference fit with the outer diameter surface of the edge of the bearing inner ring 1, and it is required that the included angle between the joint surface of the two halves of the clamping ring 13 and the joint surface of the two halves of the bearing inner ring 1 is approximately 90° when installed, so that the force is optimally decomposed at this time and the clamping is more reliable. Specifically, during actual operation, in order to reduce the assembly difficulty, the included angle is not strictly limited to 90°, and it can be about 90°. Preferably, the included angle is between 60° and 120°.

[0065] The bearing inner ring 1 innovatively uses a broken-line cutting method to cut the inner ring into two half-rings and form a certain snap structure 14. During installation, it is inserted and spliced, and then a clamping ring 13 with a certain interference fit is used for clamping to achieve radial full-dimensional locking. The locking effect is more accurate and firm, avoiding the radial micro-expansion phenomenon of the bearing inner ring 1 when loaded.

[0066] The basic structure of the bearing outer ring 2 consists of a split outer ring one 21, a split outer ring two 22, an outer ring locating pin 23, and an outer ring set screw 24.

[0067] The cage roller assembly 3 is composed of two split cage assemblies 32 and rollers 31 combined.

[0068] The bearing inner ring 1 and the cage roller assembly 3 are installed on the main shaft 4, and the bearing outer ring 2 is installed inside the bearing housing 5 for supporting the shafting.

[0069] Embodiment 2

[0070] Please refer to the attached Figures 9 - 16 , an installation method for a reinforced fully split electrically corrosion-resistant rolling bearing, including the following steps.

[0071] Step 1, install the split inner ring one 11 in the corresponding position of the main shaft 4, and apply grease on the connection surfaces of the split inner ring one 11 and the split inner ring two 12. The split inner ring two 12 is axially misaligned with the split inner ring one 11 to fit the connection surfaces, and slide the split inner ring two 12 axially to make the groove structure 142 cooperate with the wedge structure 141.

[0072] In particular, both the split inner ring one 11 and the split inner ring two 12 need to be heat-treated before installation.

[0073] Step 2: Install clamping rings 13 at both axial ends of the inner ring 1 of the bearing. When installing, the plane where the joint surface of the split clamping ring one 131 and the split clamping ring two 132 is located is perpendicular to the plane where the joint surface of the split inner ring one 11 and the split inner ring two 12 is located. The split inner ring one 11, the split inner ring two 12 and the clamping ring 13 together form the inner ring 1 of the bearing.

[0074] Step 3: Combine and install the two split cage assemblies 32 at the corresponding positions of the inner ring 1 of the bearing by using cage positioning pins 33 and cage set screws 34.

[0075] Step 4: Apply grease on the joint surfaces of the split outer ring one 21 and the split outer ring two 22, and combine and install them at the corresponding positions of the cage roller assembly 3 by using outer ring positioning pins 23 and outer ring set screws 24. The split outer ring one 21 and the split outer ring two 22 together form the outer ring 2 of the bearing.

[0076] Step 5: Install the outer ring 2 of the bearing into the bearing housing 5, and the installation is completed.

[0077] Specifically, install the outer ring 2 of the bearing at the corresponding position of the bearing base 51. After heating the part of the bearing housing cover 52 in contact with the outer ring 2 of the bearing, hoist the bearing housing cover 52 to cooperate with the bearing base 51, and fix and connect the bearing housing cover 52 to the bearing base 51 through the bearing housing positioning pin 53 and the bearing housing set screw 54.

[0078] During specific implementation, first place the large end face of the main shaft 4 downward vertically and level it horizontally. Then heat the inner diameter surface of the split inner ring one 11. After heating, install it at the corresponding position of the main shaft 4 and apply a small amount of grease on the wire-cut joint surface.

[0079] Next, heat the inner diameter surface of the split inner ring two 12. After heating, first apply a small amount of grease on the wire-cut joint surface, and then move it axially along with a certain offset until it is combined with the split inner ring one 11 as a whole.

[0080] Lock the split inner ring one 11 and the split inner ring two 12 at the corresponding positions on the main shaft 4 through the clamping ring 13. It is required that the two half joint surfaces of the clamping ring 13 and the two half joint surfaces of the inner ring 1 of the bearing are installed at about 90°. At this time, the force is optimally decomposed and the clamping is more reliable. Finally, use a pressing device to press the inner ring.

[0081] Position the two split cage assemblies 32 of the split type through the cage positioning pins 33, and fasten and combine them into a whole through the cage set screws 34 and the cage connecting plate 35 and install them at the corresponding positions of the inner ring 1 of the bearing.

[0082] Apply a small amount of grease to the mating surface of the split outer ring 1 - 21 and the split outer ring 2 - 22, position them through the outer ring locating pin 23, and fasten them together with the outer ring set screw 24. Then install the assembled part at the corresponding position of the cage roller assembly 3. Since the bearing housing 5 can radially restrict the outer ring 2 of the bearing, the traditional two - half cutting method with a small V - shaped angle can be used.

[0083] Fit the bearing housing 5 with the spindle 4 assembly. Heat the outer ring mounting surface of the bearing housing upper cover 52, lift and install the bearing housing upper cover 52 onto the bearing housing base 51. The two are positioned through the bearing housing locating pin 53 and fastened together with the bearing housing set screw 54. Then use the pressing device to press the outer ring 2 of the bearing.

[0084] After cooling to room temperature, the installation is completed.

[0085] It should be noted that the parts not described in detail in this solution are all prior arts. The above embodiments are only used to illustrate the present invention, but the present invention is not limited to the above embodiments. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention all fall within the protection scope of the present invention.

Claims

1. A reinforced fully split electrical corrosion resistant rolling bearing, comprising a splittable bearing inner ring (1), a bearing outer ring (2), and a cage roller assembly (3), characterized in that: The bearing inner ring (1) comprises a split inner ring 1 (11) and a split inner ring 2 (12), and the split inner ring 1 (11) and the split inner ring 2 (12) are fixed into a ring by a clamping ring (13). The split inner ring one (11) and the split inner ring two (12) are provided with a snap-fit ​​structure (14) at two connection points for circumferentially fixing the split inner ring one (11) and the split inner ring two (12). The snap-fit ​​structure (14) comprises a protruding wedge-shaped structure (141) provided on the split inner ring one (11) and a groove structure (142) provided on the split inner ring two (12) and cooperating with the wedge-shaped structure (141). The split inner ring one (11) is provided with a wedge-shaped structure (141) at both axial ends of the connection surface with the split inner ring two (12). The split inner ring two (12) is provided with a groove structure (142) for cooperating with the wedge-shaped structure (141) at a position corresponding to the wedge-shaped structure (141). The snap-fit ​​structure (14) can be clamped and separated by sliding the split inner ring one (11) and the split inner ring two (12) relative to each other along the axial direction of the bearing. The cage roller assembly (3) comprises a roller (31), and the surface of the roller (31) is provided with an insulating coating for alleviating electrochemical corrosion of the bearing.

2. A reinforced fully split electrical corrosion resistant rolling bearing according to claim 1, characterized in that: A clamping ring (13) is provided at each of the two axial ends of the bearing inner ring (1), and an inner diameter of the clamping ring (13) and an outer diameter of the bearing inner ring (1) are in interference fit.

3. A reinforced fully split electrical corrosion resistant rolling bearing as claimed in claim 2, characterized in that: The bearing outer ring (2) comprises a split outer ring one (21) and a split outer ring two (22); the connection surface between the split outer ring one (21) and the split outer ring two (22) is a V-shaped surface; the split outer ring one (21) and the split outer ring two (22) are both provided with outer ring locating pins (23) at the connection; the split outer ring one (21) and the split outer ring two (22) are fixedly connected by outer ring fixing screws (24).

4. A reinforced fully split electrical corrosion resistant rolling bearing as claimed in claim 3, characterized in that: The roller (31) uses DLC surface coating technology to produce a coating with an insulating effect on its surface.

5. A reinforced fully split electrical corrosion resistant rolling bearing as claimed in claim 4, characterized in that: The cage roller assembly (3) further comprises two split cage assemblies (32), the roller (31) being rotatably mounted on the split cage assemblies (32), the two split cage assemblies (32) being provided with cage locating pins (33) at the connection surfaces, and the two split cage assemblies (32) being fixedly connected via cage set screws (34) and cage connecting plates (35).

6. A reinforced fully split electrical corrosion resistant rolling bearing as claimed in claim 5, characterized in that: The clamping ring (13) comprises a split clamping ring 1 (131) and a split clamping ring 2 (132), and the split clamping ring 1 (131) and the split clamping ring 2 (132) are fixedly connected via a clamping ring fixing screw (133).

7. A reinforced fully split electrical corrosion resistant rolling bearing as claimed in claim 6, characterized in that: The plane where the connection surface of the split clamping ring 1 (131) and the split clamping ring 2 (132) is located is perpendicular to the plane where the connection surface of the split inner ring 1 (11) and the split inner ring 2 (12) is located.

8. A reinforced fully split electrical corrosion resistant rolling bearing as claimed in claim 7, characterized in that: The split inner ring 1 (11) and the split inner ring 2 (12) are manufactured by cutting the same complete bearing inner ring (1) by wire cutting.

9. The method for installing a reinforced fully split electrical corrosion resistant rolling bearing according to claim 8, characterized in that: The following steps are included: Step 1: Install the split inner ring 1 (11) at the corresponding position of the main shaft (4), and apply grease to the connection surfaces of the split inner ring 1 (11) and the split inner ring 2 (12). The split inner ring 2 (12) is axially offset from the split inner ring 1 (11) to fit the connection surfaces together, and the split inner ring 2 (12) is axially slid to make the groove structure (142) fit with the wedge structure (141). Step 2: Install the clamping rings (13) at both axial ends of the bearing inner ring (1). During installation, the plane where the connection surfaces of the split clamping ring 1 (131) and the split clamping ring 2 (132) are located is perpendicular to the plane where the connection surfaces of the split inner ring 1 (11) and the split inner ring 2 (12) are located. The split inner ring 1 (11), the split inner ring 2 (12) and the clamping ring (13) together constitute the bearing inner ring (1). Step 3: The two split cage assemblies (32) are assembled and installed at corresponding positions of the bearing inner ring (1) using the cage positioning pins (33) and the cage fixing screws (34). Step 4: Apply grease to the connection surfaces of the split outer ring 1 (21) and the split outer ring 2 (22), and use the outer ring locating pin (23) and the outer ring set screw (24) to assemble and install them at the corresponding position of the cage roller assembly (3). The split outer ring 1 (21) and the split outer ring 2 (22) together form the bearing outer ring (2). Step 5: Install the bearing outer ring (2) into the bearing seat (5). The installation is complete.

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