A bearing sleeve

Abstract

The application relates to the technical field of bearing production, in particular to a bearing sleeve which comprises a shaft sleeve and a composite sleeve, the composite sleeve comprises an inner ring, an outer ring and a connecting ring, the connecting ring is fixedly connected between the inner ring and the outer ring, an assembly cavity is formed between the inner ring and the outer ring, the shaft sleeve is rotatably installed in the assembly cavity, the outer wall of the shaft sleeve abuts against the outer ring, and the inner wall of the shaft sleeve abuts against the inner ring; a first oil injection hole is formed through the outer wall of the outer ring, a second oil injection hole is formed through the outer wall of the shaft sleeve, a plurality of oil outlet holes are formed through the inner wall of the inner ring, the plurality of oil outlet holes are evenly distributed on the inner wall of the inner ring, and the second oil injection hole is in communication with the oil outlet holes; the first oil injection hole and the second oil injection hole are dislocated or communicated during rotation of the shaft sleeve. The application aims to effectively guarantee the lubricating efficiency between the bearing sleeve and the bearing and the structural strength of the bearing sleeve, thereby favorably ensuring the stability of the bearing during use.

Description

Technical Field

[0001] This application relates to the field of bearing manufacturing technology, and in particular to a bearing sleeve. Background Technology

[0002] As bearing sleeves are used for a long time, the wear between the bearing sleeve and the bearing will gradually increase. In order to effectively reduce the wear between the bearing sleeve and the bearing, lubricating oil is usually added between the bearing sleeve and the bearing to lubricate them.

[0003] In related technologies, in order to effectively increase the lubrication efficiency of lubricating oil between the bearing sleeve and the bearing, many oil holes are opened on the inner wall of the bearing sleeve. Through these oil holes, the lubricating oil is more evenly distributed between the bearing sleeve and the bearing, which helps to enhance the lubrication effect between the bearing sleeve and the bearing.

[0004] However, this method of drilling holes in the bearing sleeve will greatly reduce the structural strength of the bearing sleeve itself, which will in turn affect the stability of the bearing during use. Summary of the Invention

[0005] This application provides a bearing sleeve, the purpose of which is to effectively ensure the lubrication efficiency between the bearing sleeve and the bearing, while also effectively ensuring the structural strength of the bearing sleeve itself, thereby helping to ensure the stability of the bearing during use.

[0006] This application provides a bearing sleeve, which adopts the following technical solution:

[0007] A bearing sleeve includes a bushing and a composite sleeve. The composite sleeve includes an inner ring, an outer ring, and a connecting ring. The connecting ring is fixedly connected between the inner ring and the outer ring. An assembly cavity is formed between the inner ring and the outer ring. The bushing is rotatably installed in the assembly cavity. The outer wall of the bushing abuts against the outer ring, and the inner wall of the bushing abuts against the inner ring.

[0008] A first oil injection hole is provided through the outer wall of the outer ring, a second oil injection hole is provided through the outer wall of the bushing, and a plurality of oil outlet holes are provided through the inner wall of the inner ring. The plurality of oil outlet holes are evenly distributed throughout the inner wall of the inner ring, and the second oil injection hole is connected to the oil outlet holes.

[0009] During rotation, the bushing can misalign or connect the first oil injection hole and the second oil injection hole.

[0010] By adopting the above technical solution, when no lubricating oil needs to be added to the bearing, the first and second oil injection holes are misaligned and not connected. When lubricating oil needs to be added to the bearing, the bushing is rotated within the assembly cavity until the first and second oil injection holes are aligned and connected. At this point, lubricating oil can be added to the oil outlet hole through the first and second oil injection holes, and then fill the bearing through the oil outlet hole.

[0011] Because the oil outlet holes are evenly spaced throughout the inner ring of the composite bushing, these oil outlet holes can provide lubrication to the bearing evenly in multiple directions, which helps to ensure the lubrication effect of the bearing during operation.

[0012] This design places the oil outlet on the inner ring of the composite sleeve, effectively avoiding the need to directly open the oil outlet on the bearing sleeve. This ensures effective lubrication of the bearing without damaging the structural strength of the bearing sleeve, thus effectively guaranteeing the overall stability of the bearing system during operation.

[0013] Preferably, the bottom of the connecting ring is recessed inward along its circumference in a direction away from the assembly cavity for the bushing to rotate. The rotating ring groove is located inside the assembly cavity. The top of the bushing is integrally formed with a rotating insert plate in the vertical direction along its circumference. The rotating insert plate is rotatably inserted into the rotating ring groove.

[0014] By adopting the above technical solution, the bushing can be rotated in the assembly cavity by using the rotating annular groove and the rotating insert plate, and then the opening or closing of the first oil injection hole and the second oil injection hole can be achieved by rotating the bushing.

[0015] Preferably, a snap-fit ​​mechanism is provided between the bushing and the composite sleeve. The snap-fit ​​mechanism includes a first snap-fit ​​component and a second snap-fit ​​component. The first snap-fit ​​component is used to stably install the bushing in the assembly cavity, and the second snap-fit ​​component is used to quickly and efficiently align and connect the first oil injection hole and the second oil injection hole.

[0016] By adopting the above technical solution, the bushing is stably installed in the assembly cavity using the first snap-fit ​​component; the second snap-fit ​​component is used to assist the operator in quickly and efficiently aligning the first and second oil injection holes, thereby effectively improving the convenience and user experience of the work.

[0017] Preferably, the first snap-fit ​​assembly includes a socket and a rod. The socket is formed on the groove wall of the rotating annular groove, and the rod is integrally formed on the top of the rotating insert plate in the vertical direction. The rod is inserted into the socket.

[0018] By adopting the above technical solution, the insertion rod is limited by the periphery of the insertion hole wall, thereby effectively ensuring the stability of the bushing during installation in the assembly cavity. When the insertion rod is inserted into the insertion hole, the first oil injection hole and the second oil injection hole remain misaligned and not connected to each other.

[0019] Preferably, the second snap-fit ​​assembly includes a mounting groove and a magnet. The bottom of the inner wall of the outer ring of the composite sleeve is recessed in the direction away from the bushing, and the side of the bushing connected to the outer ring is also provided with a mounting groove. Magnets are adhered in the mounting grooves of both the bushing and the outer ring.

[0020] By adopting the above technical solution, as the bushing rotates in the assembly cavity, when the magnet on the bushing and the magnet on the outer ring of the composite sleeve rotate together and are magnetically connected, the magnet on the bushing and the magnet on the outer ring of the composite sleeve are used to limit the bushing and the outer ring of the composite sleeve. In this state, the four first oil injection holes and the four second oil injection holes are aligned and connected one by one.

[0021] Furthermore, when the bearing needs to be filled with lubricating oil using the second snap-fit ​​assembly, when the magnet on the bushing and the magnet on the outer ring of the composite sleeve rotate together and magnetically connect, it means that the first oil filling hole on the outer ring of the composite sleeve and the corresponding second oil filling hole on the bushing are connected. This helps the operator to quickly and efficiently align the first and second oil filling holes, which is beneficial to improving the convenience and experience of the work.

[0022] Preferably, the second snap-fit ​​assembly includes a first snap-fit ​​groove and a second snap-fit ​​groove. The first snap-fit ​​groove is integrally formed in the horizontal direction at the bottom of the outer ring. A snap-fit ​​block is slidably installed in the first snap-fit ​​groove along its length direction. The second snap-fit ​​groove is formed in the outer wall of the bushing, and the snap-fit ​​block is snap-fitted and connected to the second snap-fit ​​groove.

[0023] By adopting the above technical solution, as the bushing rotates in the assembly cavity, when the second slot on the bushing corresponds to the first slot on the outer ring of the composite sleeve, the locking block in the first slot extends from the first slot to the second slot. The second slot on the bushing and the locking block on the outer ring of the composite sleeve limit the bushing and the outer ring of the composite sleeve. In this state, the four first oil injection holes and the four second oil injection holes are aligned and connected one by one.

[0024] After the lubricating oil is filled, slide the block out of the second slot and rotate the bushing again to insert the insert rod into the insertion hole. At this time, the first oil filling hole and the corresponding second oil filling hole are misaligned.

[0025] Preferably, a spring is installed in the first slot along its length, one end of the spring is connected to the inner wall of the first slot, and the other end of the spring is connected to the card block. The spring is used to drive the card block to slide in the first slot.

[0026] By adopting the above technical solution, specifically, without needing to fill the bearing with lubricating oil, the insert rod is inserted into the insertion hole. At this time, the bushing is in a stable installation state. The outer wall of the bushing presses against the locking block, and the spring remains compressed in this state. As the bushing rotates, when the locking block aligns with the second locking groove on the bushing, the spring uses its own elastic force to push the locking block into the second locking groove, thereby locking the locking block into the second locking groove.

[0027] Preferably, the bottom of the card block is integrally formed with a baffle along the vertical direction.

[0028] By adopting the above technical solution, when the card block is inserted into the second card slot, the baffle abuts against the outer wall of the second card slot, thereby limiting the card block's movement. Simultaneously, when it is necessary to remove the card block from the second card slot, simply moving the baffle away from the second card slot will remove the card block, which is very convenient.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. When no lubricating oil needs to be added to the bearing, the first and second oil injection holes are misaligned and not connected. When lubricating oil needs to be added to the bearing, the bushing is rotated within the assembly cavity until the first and second oil injection holes align and connect. At this point, lubricating oil can be added through the first and second oil injection holes to the oil outlet hole, which then fills the bearing.

[0031] Because the oil outlet holes are evenly spaced throughout the inner ring of the composite bushing, these oil outlet holes can provide lubrication to the bearing evenly in multiple directions, which helps to ensure the lubrication effect of the bearing during operation.

[0032] This configuration places the oil outlet on the inner ring of the composite sleeve, effectively avoiding the direct placement of the oil outlet on the bearing sleeve. This ensures effective lubrication of the bearing without damaging the structural strength of the bearing sleeve, thus effectively guaranteeing the overall stability of the bearing system during operation.

[0033] 2. As the bushing rotates within the assembly cavity, when the magnet on the bushing and the magnet on the outer ring of the composite sleeve rotate together and magnetically connect, the magnet on the bushing and the magnet on the outer ring of the composite sleeve limit the bushing and the outer ring of the composite sleeve. In this state, the four first oil injection holes and the four second oil injection holes are aligned and connected one by one.

[0034] Furthermore, when the bearing needs to be filled with lubricating oil using the second snap-fit ​​assembly, when the magnet on the bushing and the magnet on the outer ring of the composite sleeve rotate together and magnetically connect, it means that the first oil filling hole on the outer ring of the composite sleeve and the corresponding second oil filling hole on the bushing are connected. This helps the staff to quickly and efficiently align the first and second oil filling holes, which is beneficial to improving the convenience and experience of the work.

[0035] 3. As the bushing rotates in the assembly cavity, when the second groove on the bushing corresponds to the first groove on the outer ring of the composite sleeve, the locking block in the first groove extends from the first groove to the second groove. The second groove on the bushing and the locking block on the outer ring of the composite sleeve limit the bushing and the outer ring of the composite sleeve. In this state, the four first oil injection holes and the four second oil injection holes are aligned and connected one by one.

[0036] After the lubricating oil is filled, slide the block out of the second slot and rotate the bushing again to insert the insert rod into the insertion hole. At this time, the first oil filling hole and the corresponding second oil filling hole are misaligned. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0038] Figure 2 This is a structural schematic diagram illustrating the specific positional relationship of the sockets in an embodiment of this application;

[0039] Figure 3 This is a structural schematic diagram illustrating the specific positional relationship of the insertion rods in an embodiment of this application;

[0040] Figure 4 This is a structural schematic diagram illustrating the positional relationship between the mounting slot and the magnet in a specific embodiment of this application;

[0041] Figure 5 This is a structural schematic diagram illustrating the positional relationship of the first card slot, the second card slot, the card block, the spring, and the baffle in a specific embodiment of this application.

[0042] Reference numerals: 1. Bushing; 2. Composite sleeve; 21. Inner ring; 22. Outer ring; 23. Connecting ring; 3. Assembly cavity; 4. First oil injection hole; 5. Second oil injection hole; 6. Oil outlet hole; 7. Rotating ring groove; 8. Rotating insert plate; 9. First snap-fit ​​assembly; 91. Insertion hole; 92. Insert rod; 10. Second snap-fit ​​assembly; 101. Mounting groove; 102. Magnet; 103. First slot; 104. Second slot; 11. Locking block; 12. Spring; 13. Baffle. Detailed Implementation

[0043] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0044] Example 1:

[0045] This application discloses a bearing sleeve, referring to... Figure 1 The assembly includes a bushing 1 and a composite sleeve 2. The bushing 1 is annular, and the composite sleeve 2 includes an inner ring 21, an outer ring 22, and a connecting ring 23. Both the inner ring 21 and the outer ring 22 are annular and coaxially arranged. The connecting ring 23 is integrally formed between the tops of the inner ring 21 and the outer ring 22. An annular assembly cavity 3 is formed between the inner ring 21 and the outer ring 22. The bushing 1 is inserted into the assembly cavity 3 and can rotate within it. The outer wall of the bushing 1 abuts against the outer ring 22 of the composite sleeve 2, and the inner wall of the bushing 1 abuts against the inner ring 21 of the composite sleeve 2. After the bushing 1 and the composite sleeve 2 are assembled, the corresponding bearing is inserted into the inner ring 21 of the composite sleeve 2. At the same time, a corresponding sealing cover is added to the bottom of the bushing 1 to effectively seal the bushing 1, the composite sleeve 2, and the bearing.

[0046] Reference Figure 1 A circular first oil injection hole 4 is provided through the outer wall of the outer ring 22 of the composite sleeve 2, and a circular second oil injection hole 5 is provided through the outer wall of the bushing 1. At the same time, multiple circular oil outlet holes 6 are provided through the inner wall of the inner ring 21 of the composite sleeve 2. These oil outlet holes 6 are evenly distributed on the inner wall of the inner ring 21 of the composite sleeve 2. The second oil injection hole 5 is connected to the oil outlet holes 6.

[0047] When no lubricating oil needs to be added to the bearing, the first oil injection hole 4 and the second oil injection hole 5 are misaligned, and are not connected to each other. The second oil injection hole 5 and the corresponding oil outlet hole 6 are also not connected. When lubricating oil needs to be added to the bearing, the bushing 1 is rotated within the assembly cavity 3 until the first oil injection hole 4 and the second oil injection hole 5 are aligned and connected. At this point, the second oil injection hole 5 and the corresponding oil outlet hole 6 are also aligned and connected. Lubricating oil can then be added to the oil outlet hole 6 through the first oil injection hole 4 and the second oil injection hole 5, and then fill the bearing through the oil outlet hole 6.

[0048] Since the oil outlet holes 6 are evenly distributed throughout the inner ring 21 of the composite sleeve 2, these oil outlet holes 6 can provide lubrication to the bearing evenly in multiple directions, which helps to ensure the lubrication effect of the bearing during operation.

[0049] This configuration places the oil outlet 6 on the inner ring 21 of the composite sleeve 2, effectively avoiding the direct opening of the oil hole on the bearing sleeve. This ensures the lubrication effect on the bearing without damaging the structural strength of the bearing sleeve, thus effectively guaranteeing the overall stability of the bearing system during bearing operation.

[0050] In this embodiment, there are four first oil filling holes 4 and four second oil filling holes 5. The four first oil filling holes 4 are spaced apart at the front, back, left, and right positions of the outer ring 22 of the composite sleeve 2, and the four second oil filling holes 5 are spaced apart at the front, back, left, and right positions of the bushing 1. Having multiple first oil filling holes 4 and multiple second oil filling holes 5 not only allows for the rapid and effective filling of lubricating oil onto the bushing 1 through the oil outlet hole 6, but also effectively ensures the uniformity of lubricating oil filling during the process, which is beneficial for improving the lubricating effect of the lubricating oil on the bearing.

[0051] At the same time, refer to Figure 2 , Figure 3 as well as Figure 4 A snap-fit ​​mechanism is also provided between the bushing 1 and the composite sleeve 2. The snap-fit ​​mechanism includes a first snap-fit ​​component 9 and a second snap-fit ​​component 10. The first snap-fit ​​component 9 is used to stably install the bushing 1 in the assembly cavity 3, and the second snap-fit ​​component 10 is used to assist the operator in quickly and efficiently aligning the first oil injection hole 4 and the second oil injection hole 5, thereby effectively improving the convenience and experience of the work.

[0052] Specifically, refer to Figure 1 The bottom of the connecting ring 23 has a rotating ring groove 7 recessed along its circumference in the direction away from the assembly cavity 3, which allows the bushing 1 to rotate. The rotating ring groove 7 is located inside the assembly cavity 3. The top of the bushing 1 has a rotating insert plate 8 integrally formed in the vertical direction along its circumference. The rotating insert plate 8 is inserted into the rotating ring groove 7 and rotates within the rotating ring groove 7.

[0053] The rotating annular groove 7 and the rotating insert plate 8 are used to realize the rotation of the bushing 1 in the assembly cavity 3, and then the opening or closing of the first oil injection hole 4 and the second oil injection hole 5 is realized by rotating the bushing 1.

[0054] Specifically, refer to Figure 1 , Figure 2 as well as Figure 3 The first snap-fit ​​assembly 9 includes a socket 91 and a rod 92. The socket 91 is formed on the groove wall of the rotating annular groove 7. The rod 92 is integrally formed on the top of the rotating insert plate 8 in the vertical direction. The rod 92 rotates with the rotating insert plate 8 in the rotating annular groove 7 until the top of the rod 92 is inserted into the socket 91. The circumferential side of the socket wall 91 limits the rod 92 to a certain extent, thereby effectively ensuring the stability of the bushing 1 in the assembly cavity 3.

[0055] When the insertion rod 92 is inserted into the insertion hole 91, the first oil injection hole 4 and the second oil injection hole 5 remain misaligned and not connected to each other.

[0056] In this embodiment, the insert rod 92 is made of rubber, which is soft, elastic, and easily deformable. This allows the insert rod 92 to easily deform and slide out of the insertion hole 91 when the bushing 1 needs to be rotated, thereby releasing the restriction of the insert rod 92 by the periphery of the insertion hole 91.

[0057] Meanwhile, during the specific processing, the length of the insertion rod 92 and the depth of the insertion hole 91 are reasonably controlled. When the insertion rod 92 is inserted into the insertion hole 91, the insertion depth of the insertion rod 92 into the insertion hole 91 is not too deep. This helps the insertion rod 92 to slide out of the insertion hole 91, but it is necessary to ensure that the insertion rod 92 can be limited.

[0058] Specifically, refer to Figure 1 and Figure 4 The second snap-fit ​​assembly 10 includes a mounting groove 101 and a magnet 102. The bottom of the inner wall of the outer ring 22 of the composite sleeve 2 is recessed inwards towards the direction away from the bushing 1, and the side of the bushing 1 connected to the outer ring 22 of the composite sleeve 2 also has a mounting groove 101. The magnet 102 is adhered to the mounting groove 101 by an adhesive mounting method. As the bushing 1 rotates within the assembly cavity 3, when the magnet 102 on the bushing 1 and the magnet 102 on the outer ring 22 of the composite sleeve 2 rotate together and magnetically attract each other, the magnets 102 on the bushing 1 and the outer ring 22 of the composite sleeve 2 limit the movement of the bushing 1 and the outer ring 22 of the composite sleeve 2. In this state, the four first oil injection holes 4 and the four second oil injection holes 5 are aligned and connected one by one.

[0059] Furthermore, when the bearing needs to be filled with lubricating oil using the second snap-fit ​​assembly 10, when the magnet 102 on the bushing 1 and the magnet 102 on the outer ring 22 of the composite sleeve 2 rotate together and magnetically connect, it means that the first oil filling hole 4 on the outer ring 22 of the composite sleeve 2 and the corresponding second oil filling hole 5 on the bushing 1 are in a connected state. This can help the staff to quickly and efficiently align the first oil filling hole 4 and the second oil filling hole 5, which is beneficial to improving the convenience and experience of the work.

[0060] The implementation principle of a bearing sleeve in this application embodiment is as follows:

[0061] When no lubricating oil needs to be added to the bearing, the first oil injection hole 4 and the second oil injection hole 5 are misaligned, and at this time, the first oil injection hole 4 and the second oil injection hole 5 are not connected. When lubricating oil needs to be added to the bearing, the bushing 1 is rotated in the assembly cavity 3 until the first oil injection hole 4 and the second oil injection hole 5 are aligned and connected. At this time, lubricating oil can be added to the oil outlet hole 6 through the first oil injection hole 4 and the second oil injection hole 5, and then fill the bearing through the oil outlet hole 6.

[0062] Since the oil outlet holes 6 are evenly distributed throughout the inner ring 21 of the composite sleeve 2, these oil outlet holes 6 can provide lubrication to the bearing evenly in multiple directions, which helps to ensure the lubrication effect of the bearing during operation.

[0063] This configuration places the oil outlet 6 on the inner ring 21 of the composite sleeve 2, effectively avoiding the direct opening of the oil hole on the bearing sleeve. This ensures the lubrication effect on the bearing without damaging the structural strength of the bearing sleeve, thus effectively guaranteeing the overall stability of the bearing system during bearing operation.

[0064] Example 2:

[0065] The difference between this embodiment and Embodiment 1 is that:

[0066] Reference Figure 1 and Figure 5 The second snap-fit ​​assembly 10 includes a first snap-fit ​​groove 103 and a second snap-fit ​​groove 104. The first snap-fit ​​groove 103 is elongated and is integrally formed in the horizontal direction at the bottom of the outer ring 22 of the composite sleeve 2. An elongated snap-fit ​​block 11 is slidably installed in the first snap-fit ​​groove 103 along its length direction. The second snap-fit ​​groove 104 is formed on the outer wall of the bushing 1.

[0067] As the bushing 1 rotates in the assembly cavity 3, when the second slot 104 on the bushing 1 corresponds to the first slot 103 on the outer ring 22 of the composite sleeve 2, the locking block 11 in the first slot 103 extends from the first slot 103 into the second slot 104. The second slot 104 on the bushing 1 and the locking block 11 on the outer ring 22 of the composite sleeve 2 limit the bushing 1 and the outer ring 22 of the composite sleeve 2. In this state, the four first oil filling holes 4 and the four second oil filling holes 5 are aligned and connected one by one.

[0068] After the lubricating oil is filled, slide the locking block 11 out of the second locking groove 104, and rotate the bushing 1 again to insert the insertion rod 92 into the insertion hole 91. At this time, the first oil filling hole 4 and the corresponding second oil filling hole 5 are in a misaligned state.

[0069] Specifically, refer to Figure 5 A spring 12 is installed on the first slot 103 along its length. One end of the spring 12 is connected to the inner wall of the first slot 103, and the other end of the spring 12 is connected to the block 11. The block 11 slides in the first slot 103 through the compression elasticity of the spring 12.

[0070] Specifically, without needing to fill the bearing with lubricating oil, the insert rod 92 is inserted into the insertion hole 91. At this time, the bushing 1 is in a stable installation state. The outer wall of the bushing 1 presses against the locking block 11, and the spring 12 remains compressed in this state. As the bushing 1 rotates, when the locking block 11 aligns with the second locking groove 104 on the bushing 1, the spring 12 uses its own elastic force to push the locking block 11 into the second locking groove 104, thereby locking the locking block 11 into the second locking groove 104.

[0071] Furthermore, referring to Figure 5 The bottom of the locking block 11 is integrally formed with a baffle 13 along the vertical direction. When the locking block 11 is inserted into the second locking slot 104, the baffle 13 abuts against the outer wall of the second locking slot 104, thereby limiting the locking block 11. At the same time, when it is necessary to remove the locking block 11 from the second locking slot 104, the baffle 13 can be moved away from the second locking slot 104 to remove the locking block 11 from the second locking slot 104, which is very convenient.

[0072] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bearing sleeve, characterized in that: The assembly includes a bushing (1) and a composite sleeve (2). The composite sleeve (2) includes an inner ring (21), an outer ring (22), and a connecting ring (23). The connecting ring (23) is fixedly connected between the inner ring (21) and the outer ring (22). An assembly cavity (3) is formed between the inner ring (21) and the outer ring (22). The bushing (1) is rotatably installed in the assembly cavity (3). The outer wall of the bushing (1) abuts against the outer ring (22), and the inner wall of the bushing (1) abuts against the inner ring (21). The outer ring (22) has a first oil injection hole (4) through it on its outer wall, the bushing (1) has a second oil injection hole (5) through it on its outer wall, and the inner ring (21) has a plurality of oil outlet holes (6) through it on its inner wall. The plurality of oil outlet holes (6) are evenly distributed throughout the inner wall of the inner ring (21). The second oil injection hole (5) is connected to the oil outlet hole (6). During rotation, the bushing (1) can misalign or connect the first oil injection hole (4) and the second oil injection hole (5); The bottom of the connecting ring (23) is recessed inward along its periphery toward the direction away from the assembly cavity (3) for the bushing (1) to rotate. The rotating ring groove (7) is located in the assembly cavity (3). The top of the bushing (1) is integrally formed with a rotating insert plate (8) in the vertical direction along its periphery. The rotating insert plate (8) is rotatably inserted into the rotating ring groove (7). A snap-fit ​​mechanism is provided between the bushing (1) and the composite sleeve (2). The snap-fit ​​mechanism includes a first snap-fit ​​component (9) and a second snap-fit ​​component (10). The first snap-fit ​​component (9) is used to stably install the bushing (1) in the assembly cavity (3). The second snap-fit ​​component (10) is used to quickly and efficiently align and connect the first oil injection hole (4) and the second oil injection hole (5).

2. The bearing sleeve according to claim 1, characterized in that: The first snap-fit ​​assembly (9) includes a socket (91) and a rod (92). The socket (91) is formed on the groove wall of the rotating annular groove (7). The rod (92) is integrally formed on the top of the rotating insert plate (8) in the vertical direction. The rod (92) is inserted into the socket (91).

3. A bearing sleeve according to claim 2, characterized in that: The second snap-fit ​​assembly (10) includes a mounting groove (101) and a magnet (102). The bottom of the inner wall of the outer ring (22) of the composite sleeve (2) is recessed in the direction away from the bushing (1). The bushing (1) is also provided with a mounting groove (101) on the side connected to the outer ring (22). Magnets (102) are glued in the mounting grooves (101) of both the bushing (1) and the outer ring (22).

4. A bearing sleeve according to claim 3, characterized in that: The second snap-fit ​​assembly (10) includes a first snap-fit ​​groove (103) and a second snap-fit ​​groove (104). The first snap-fit ​​groove (103) is integrally formed in the horizontal direction and opened at the bottom of the outer ring (22). A snap-fit ​​block (11) is slidably installed in the first snap-fit ​​groove (103) along its length direction. The second snap-fit ​​groove (104) is opened on the outer wall of the bushing (1). The snap-fit ​​block (11) is snap-fit ​​connected to the second snap-fit ​​groove (104).

5. A bearing sleeve according to claim 4, characterized in that: A spring (12) is installed in the first slot (103) along its length. One end of the spring (12) is connected to the inner wall of the first slot (103), and the other end of the spring (12) is connected to the card block (11). The spring (12) is used to drive the card block (11) to slide in the first slot (103).

6. A bearing sleeve according to claim 5, characterized in that: The bottom of the card block (11) is integrally formed with a baffle (13) along the vertical direction.

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