Multifunctional integrated bearing structure
Through integrated design and spherical ring structure, the multifunctional bearing solves the problems of space occupation and maintenance difficulties of existing bearings when bearing multiple loads, realizes self-aligning and multi-directional movement, improves the bearing's life and stability, and adapts to complex working conditions.
Patent Information
- Application Number
- CN202511885637.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-15
- Publication Date
- 2026-01-23
AI Technical Summary
Existing bearing assemblies occupy a large space and are difficult to maintain when subjected to radial, axial, and torque loads. They also cannot meet the functional requirements of self-aligning and multi-directional movement, have a short service life, and are not adaptable to corrosive environments.
Design a multifunctional integrated bearing structure, including an outer ring, an inner ring, and three rows of rolling elements, integrating angular contact ball bearings and roller bearings, adopting a spherical ring structure and self-aligning thrust washers to achieve self-aligning and multi-directional motion functions, and preventing impurities from entering and lubricating oil from leaking through sealed channels.
It improves the versatility and adaptability of bearings, simplifies installation and maintenance, extends service life, enhances load-bearing capacity and operational stability, and meets the needs of mechanical transmission systems under complex working conditions.
Smart Images
Figure CN121382784A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of bearing design application, in particular to a multifunctional integrated bearing structure. BACKGROUND
[0002] In order to bear radial load, axial load and aligning function, the bearing assembly currently adopts a combination scheme of four-point angular contact ball bearing + double-row aligning roller bearing; However, the existing scheme has the disadvantages of large space size, difficult maintenance, weak torque load bearing capacity due to structural reasons, inability to meet the self-aligning and multi-directional motion function requirements on the same fulcrum, low bearing design life under the same working condition, weak corrosion-resistant environment adaptability and other shortcomings, which is difficult to meet the long life demand of customers. SUMMARY
[0003] In view of the problems in the prior art, the present application provides a multifunctional integrated bearing structure. Through the multifunctional integrated bearing structure, the multifunctional needs of simultaneously bearing radial load, axial load, torque load and realizing aligning and multi-directional motion of the bearing assembly can be effectively solved, the bearing load is reasonably distributed, the structure is compact, and the service life of the bearing assembly can be greatly improved.
[0004] The technical scheme adopted by the present application to solve the technical problems is: a multifunctional integrated bearing structure, comprising an outer ring sleeve, an inner ring sleeve and three rows of rolling elements between the outer ring sleeve and the inner ring sleeve, the outer ring sleeve is provided with a bearing seat sleeve for fixing on a rack, the inner ring sleeve is composed of two angular contact ball bearing inner rings and one roller bearing inner ring, the roller bearing inner ring is located between the two angular contact ball bearing inner rings, the three rows of rolling elements are two rows of spherical balls and one row of cylindrical rollers, the inner side of the outer ring sleeve is provided with ball raceways corresponding to the two angular contact ball bearing inner rings for rolling with the two rows of spherical balls, and the inner side of the outer ring sleeve is provided with a roller raceway corresponding to the roller bearing inner ring for rolling with the cylindrical roller. The multifunctional integrated bearing structure integrates the bearing seat sleeve, the outer ring sleeve, the two angular contact ball bearing inner rings and the two rows of angular contact ball bearings composed of the two rows of spherical balls, the roller bearing inner ring and the cylindrical roller into one. This integrated design enables the bearing to simultaneously bear radial, axial load and torque load, and has the functions of self-aligning and multi-directional motion.
[0005] Preferably, the outer ring sleeve is integrally formed by two outer ring edges and an outer ring body, the outer ring edges are respectively located at the upper and lower ends of the outer ring body, and the outer ring edges and the outer ring body are both spherical ring structures, the inner surface of the spherical ring structure is a part of a spherical surface concentric with the outer surface, the axial height of the outer ring edge is smaller than the axial height of the outer ring body, and the outer ring edge is inclined towards the axial center to form a continuous and smooth spherical surface structure with the outer ring body. The spherical surface structure design makes the outer ring sleeve have better alignment performance when bearing load. When the load direction changes or the shaft is bent, the spherical surface structure of the outer ring sleeve can automatically adjust its position to make the load more evenly distributed on the rolling elements.
[0006] Preferably, the inner surface of the bearing seat sleeve is linear, and the outer circular spherical surface of the outer ring body of the outer ring sleeve at the maximum diameter is in clearance fit with the linear inner surface of the bearing seat sleeve. This structure design makes the outer ring sleeve can produce axial displacement in the bearing seat sleeve.
[0007] Preferably, the inner surface of the bearing seat sleeve and the two outer ring edges of the outer ring sleeve are both provided with ring grooves, and the ring grooves and the outer ring edges of the outer ring sleeve are both provided with self-lubricating alignment thrust washers with spherical surfaces, and the spherical surfaces of the alignment thrust washers are matched with the spherical ring structures of the outer ring edges. The design of the alignment thrust washer makes the outer ring sleeve can realize arc swing alignment and radial displacement function. When the load direction changes or the shaft is bent, the alignment thrust washer can automatically adjust the position of the outer ring sleeve to keep the bearing in good running state.
[0008] Preferably, four mounting holes with the same height are uniformly arranged on the bearing seat sleeve, four limiting grooves are arranged on the outer circumferential surface of the outer ring body of the outer ring sleeve, the four limiting grooves extend along the axial direction and are uniformly distributed, and a limiting rod is fixedly installed in each mounting hole, one end of the limiting rod extends into the corresponding limiting groove, and the limiting rod is matched with the limiting groove to limit the relative axial rotation between the outer ring sleeve and the bearing seat sleeve. Under the condition that the outer ring sleeve can produce rotational displacement and axial displacement relative to the bearing seat sleeve, the coaxial rotational displacement of the outer ring sleeve relative to the bearing seat sleeve is avoided.
[0009] Preferably, two sealing grooves are formed between the outer ring sleeve and the inner rings of the two angular contact ball bearings, two ball rolling grooves and a roller rolling groove are located between the two sealing grooves, and a sealing washer is arranged in each sealing groove. The sealing groove design can effectively prevent foreign matter from entering the bearing interior and prevent lubricating oil from leaking.
[0010] Preferably, the inner ring of the two angular contact ball bearings is provided with an inner sealing groove on the side close to the outer ring sleeve, and the inner surface of the outer ring sleeve is provided with an outer sealing groove corresponding to the two inner sealing grooves, and the outer sealing groove and the corresponding inner sealing groove form a sealing groove together. By setting the sealing grooves on the inner ring and the outer ring respectively, and making them cooperate to form a sealing groove, the outside impurities can be effectively prevented from entering the bearing, and the lubricating oil leakage can also be prevented.
[0011] Preferably, the inner ring of the two angular contact ball bearings is provided with a guide slope on the side close to the outer ring sleeve, and the two guide slopes correspond to the two ball tracks respectively, and the two guide slopes can exert axial pre-tightening force on the two rows of spherical balls towards the bearing center and radial pre-tightening force towards the outer ring. The design of the guide slope makes the multifunctional integrated bearing structure be able to bear radial and axial combined load.
[0012] Preferably, a retaining ring is fixed above the outer ring sleeve in the bearing sleeve, and a locking ring is installed at the bottom of the bearing sleeve. The retaining ring and the locking ring can fix the position of the outer ring sleeve.
[0013] The beneficial effects of the present application are as follows: (1) In the present application, the multifunctional integrated bearing structure integrates the bearing sleeve, the outer ring sleeve, the two angular contact ball bearings composed of the two inner rings of the angular contact ball bearings and the two rows of spherical balls, the roller bearing composed of the inner ring of the roller bearing and the cylindrical roller, and the aligning thrust washer, realizes the functions of bearing radial, axial load, torque load, self-aligning and multi-directional movement, etc. This integrated design not only improves the multifunctionality and adaptability of the bearing, but also optimizes the performance of the entire mechanical transmission system. As the number of parts is reduced and the structure is simplified, the bearing structure is more convenient and faster in installation and maintenance. In the maintenance of some large industrial equipment, the maintenance personnel can more conveniently disassemble the bearing for inspection and replacement, reducing the maintenance time and cost. In addition, as the service life of the bearing and the reliability of the equipment operation are improved, the maintenance frequency is also reduced.
[0014] (2) In the present application, the cooperation of the spherical surface structure of the outer ring sleeve of the multifunctional integrated bearing structure and the aligning thrust washer not only realizes the aligning function, but also improves the load-carrying capacity and running stability of the bearing. The cooperation of the clearance fit and the limiting rod and the limiting groove not only ensures the axial displacement function of the outer ring sleeve, but also limits its coaxial rotation displacement, realizing precise motion control. The cooperation of the sealing groove and the sealing washer further enhances the sealing performance of the bearing, reducing the lubrication and maintenance cost. The cooperation between these structures makes the multifunctional integrated bearing structure maintain good running performance under various complex working conditions, meeting the needs of different mechanical transmission systems. BRIEF DESCRIPTION OF DRAWINGS
[0015] The application is further illustrated below in connection with the drawings and examples.
[0016] Figure 1 The application is further illustrated below in connection with the drawings and examples.
[0017] Figure 2 The application is further illustrated below in connection with the drawings and examples.
[0018] Figure 3 The application is further illustrated below in connection with the drawings and examples.
[0019] Figure 4 The application is further illustrated below in connection with the drawings and examples.
[0020] Figure 5 The application is further illustrated below in connection with the drawings and examples.
[0021] Figure 6 The application is further illustrated below in connection with the drawings and examples.
[0022] Figure 7 The application is further illustrated below in connection with the drawings and examples.
[0023] In the figure: 1, bearing sleeve; 101, baffle ring; 102, ring groove; 103, mounting hole; 2, outer sleeve; 201, ball raceway; 202, roller raceway; 203, limiting groove; 204, outer sealing groove; 3, angular contact ball bearing inner ring; 301, guide slope; 302, inner sealing groove; 4, spherical ball; 5, roller bearing inner ring; 6, cylindrical roller; 7, aligning thrust washer; 8, closing washer; 9, locking ring; 10, limiting rod. DETAILED DESCRIPTION
[0024] In order to make the technical means, creative features, purposes and effects of the application easy to understand, the application is further described below in connection with specific embodiments.
[0025] As Figures 1-7As shown, the multifunctional integrated bearing structure comprises an outer ring sleeve 2, an inner ring sleeve, and three rows of rolling elements between the outer ring sleeve 2 and the inner ring sleeve. The outer ring sleeve 2 is provided with a bearing seat 1 for fixing on a machine frame. The inner ring sleeve is composed of two angular contact ball bearing inner rings 3 and a roller bearing inner ring 5. The roller bearing inner ring 5 is located between the two angular contact ball bearing inner rings 3. The three rows of rolling elements are two rows of spherical balls 4 and one row of cylindrical rollers 6. The inner side of the outer ring sleeve 2 corresponds to the two angular contact ball bearing inner rings 3 and is provided with a ball raceway 201 for rolling with the two rows of spherical balls 4. The inner side of the outer ring sleeve 2 corresponds to the roller bearing inner ring 5 and is provided with a roller raceway 202 for rolling with the cylindrical rollers 6. The multifunctional integrated bearing structure integrates the bearing seat 1, the outer ring sleeve 2, the two angular contact ball bearings composed of the two angular contact ball bearing inner rings 3 and the two rows of spherical balls 4, and the roller bearing composed of the roller bearing inner ring 5 and the cylindrical rollers 6. This integrated design allows the bearing to simultaneously withstand radial, axial loads, and torque loads, and has self-aligning and multi-directional motion functions. Specifically, the angular contact ball bearing can withstand combined radial and axial loads, and the roller bearing can withstand large radial loads. This multifunctional integrated design reduces the need for multiple independent bearings in traditional mechanical transmission systems to achieve multiple functions, thereby greatly improving the compactness of the structure. In some space-limited mechanical transmission systems, this compact structure design can effectively save installation space, making the overall mechanical system layout more reasonable and simple. In addition, as the number of parts is reduced, the risk of failure due to improper assembly of parts is also reduced, improving the reliability and stability of the system. In some high-precision machine tool spindle application scenarios, this integrated bearing structure can replace traditional multi-bearing combinations, not only simplifying the spindle structure, but also improving the running precision and stability of the spindle, meeting the requirements of high-precision machining. In actual applications, the multifunctional integrated bearing structure selects corrosion-resistant materials and self-lubricating materials, which can ensure that the load distribution is reasonable under the use conditions, the structure is compact, and the requirements of bearing self-lubrication and corrosion-resistant environment conditions are met, ensuring the long-term use of the bearing.
[0026] Further improvement of the embodiment is that the outer ring sleeve 2 is integrally formed by two outer ring edges and an outer ring body, the outer ring edges are respectively located at the upper and lower ends of the outer ring body, and the outer ring edges and the outer ring body are both spherical ring structures, the inner surface of the spherical ring structure is a part of a spherical surface concentric with the outer surface, the axial height of the outer ring edge is smaller than the axial height of the outer ring body, and the outer ring edge is inclined to the axial direction, forming a continuous and smooth spherical surface structure with the outer ring body. This spherical surface structure design makes the outer ring sleeve 2 have better alignment performance when bearing load. When the load direction changes or the shaft is bent, the spherical surface structure of the outer ring sleeve 2 can automatically adjust its position, so that the load is more evenly distributed on the rolling elements, thereby avoiding local excessive wear caused by load concentration. At the same time, the spherical surface structure can also improve the load capacity of the bearing. Since the inner surface and the outer surface of the spherical surface structure are concentric, this symmetry makes the contact stress between the rolling elements and the raceway more uniform when the bearing bears radial and axial loads, reducing the stress concentration phenomenon. In some heavy load mechanical transmission systems, this spherical surface structure design can significantly improve the load capacity and service life of the bearing.
[0027] Further improvement of the embodiment is that the inner surface of the bearing seat sleeve 1 is linear, and the outer body of the outer ring sleeve 2 is gap-fitted with the linear inner surface of the bearing seat sleeve 1 at the maximum diameter of the outer circular spherical surface. This structure design makes the outer ring sleeve 2 can produce axial displacement in the bearing seat sleeve 1. In some mechanical transmission systems, due to factors such as temperature changes and load changes, the shaft may expand or contract to some extent. This bearing structure can adapt to the expansion and contraction of the shaft, avoiding the bearing from being stuck or excessively worn due to changes in the axial size. Since the outer ring sleeve 2 can produce axial displacement, it reduces the additional stress caused by changes in the axial size. This stress, if it exists for a long time, will accelerate the fatigue damage of the bearing. In some high-precision machine tool spindle bearings, this structure can effectively avoid the spindle runout caused by slight changes in the axial size, reduce the wear of the spindle bearing, and thus prolong the service life of the bearing. At the same time, the gap fit between the outer ring sleeve 2 and the bearing seat sleeve 1 makes it easier to install the outer ring sleeve 2 into the bearing seat sleeve 1 during assembly. Assembly personnel can more conveniently push or pull the outer ring sleeve 2 into or out of the bearing seat sleeve 1 without worrying about the difficulty of assembly due to interference fit or transition fit between the two. Because this structure improves the service life of the bearing and the reliability of equipment operation, the number of maintenance times will be reduced. Moreover, during maintenance, due to the convenience of assembly and installation, maintenance personnel can more quickly replace or adjust the bearing. In the maintenance of some large industrial equipment, maintenance personnel can more conveniently disassemble the bearing for inspection and replacement, reducing maintenance time and cost.
[0028] Further improvements of the embodiment are that the inner surface of the bearing seat sleeve 1 and the two outer ring edges of the outer ring sleeve 2 are provided with ring grooves 102, and the ball surface self-lubricating alignment thrust washer 7 is arranged between the ring groove 102 and the outer ring edge of the outer ring sleeve 2. The ball surface of the alignment thrust washer 7 is matched with the spherical ring structure of the outer ring edge. The design of the alignment thrust washer 7 enables the outer ring sleeve 2 to realize the functions of arc swing alignment and radial displacement. When the load direction changes or the shaft is bent, the alignment thrust washer 7 can automatically adjust the position of the outer ring sleeve 2, so that the bearing always maintains good running state. The self-alignment function can effectively reduce the bearing wear and vibration caused by the bending of the shaft or the change of the load direction. In the application of high-precision machine tool spindles, the alignment thrust washer 7 can ensure the stability of the spindle during high-speed rotation, reduce the runout of the spindle, and thus improve the surface quality and dimensional accuracy of the machined parts.
[0029] Further improvements of the embodiment are that four mounting holes 103 with the same height are uniformly arranged on the bearing seat sleeve 1, and four limiting grooves 203 are arranged on the outer circumferential surface of the outer ring body of the outer ring sleeve 2. The four limiting grooves 203 extend along the axial direction and are uniformly distributed. A limiting rod 10 is fixedly installed in each mounting hole 103. One end of the limiting rod 10 extends into the corresponding limiting groove 203. The limiting rod 10 cooperates with the limiting groove 203 and limits the relative axial rotation between the outer ring sleeve 2 and the bearing seat sleeve 1. Under the condition that the outer ring sleeve 2 can produce rotational displacement and axial displacement relative to the bearing seat sleeve 1, the coaxial rotational displacement of the outer ring sleeve 2 relative to the bearing seat sleeve 1 is avoided.
[0030] Further improvements of the embodiment are that two sealing grooves are formed between the outer ring sleeve 2 and the two angular contact ball bearing inner rings 3, and the two ball grooves 201 and one roller groove 202 are located between the two sealing grooves. The two sealing grooves are padded with sealing washers 8. The sealing groove design can effectively prevent foreign matter from entering the bearing interior and also prevent lubricating oil from leaking.
[0031] Further improvements of the embodiment are that the inner sealing grooves 302 are arranged on the side of the two angular contact ball bearing inner rings 3 close to the outer ring sleeve 2, and the outer sealing grooves 204 are arranged on the inner surface of the outer ring sleeve 2 corresponding to the two inner sealing grooves 302. The outer sealing groove 204 and the corresponding inner sealing groove 302 jointly form a sealing groove. By arranging sealing grooves on the inner ring and the outer ring and cooperating them to form a sealing groove, foreign matter can be effectively prevented from entering the bearing interior, and lubricating oil can also be prevented from leaking.
[0032] The further improvement of the embodiment is that the two angular contact ball bearing inner rings 3 are provided with guiding slopes 301 on the side close to the outer ring sleeve 2, the two guiding slopes 301 correspond to the two ball tracks 201 respectively, and the two guiding slopes 301 can respectively exert axial pre-tightening force to the bearing center and radial pre-tightening force to the outer ring on the two rows of spherical balls 4. The design of the guiding slopes 301 enables the multifunctional integrated bearing structure to bear radial and axial combined load. At the same time, the rolling elements can always maintain an appropriate pre-tightening state during operation, reducing the gap and vibration between the rolling elements and the raceway.
[0033] The further improvement of the embodiment is that the bearing seat sleeve 1 is fixed with a blocking ring 101 above the outer ring sleeve 2, and the bearing seat sleeve 1 is installed with a locking ring 9 at the bottom. The blocking ring 101 and the locking ring 9 can fix the position of the outer ring sleeve 2.
[0034] In use, first, the inner surface of the bearing seat sleeve 1 is linear, used to cooperate with the outer ring sleeve 2, insert the outer ring sleeve 2 into the bearing seat sleeve 2, ensure that the maximum diameter of the outer ring body spherical surface of the outer ring sleeve 2 is gap fitted with the linear inner surface of the bearing seat sleeve 1, such gap fitting allows the outer ring sleeve 2 to produce axial displacement in the bearing seat sleeve 1, so as to adapt to the expansion and contraction of the shaft, during installation, it is necessary to ensure that the two outer ring edges of the outer ring sleeve 2 are aligned with the ring groove 102 of the bearing seat sleeve 1, and the self-lubricating aligning thrust washer 7 with spherical surface is padded between the ring groove 102 and the outer ring edge, the spherical surface of the aligning thrust washer 7 is matched with the spherical ring structure of the spherical surface of the outer ring edge, providing self-aligning function for the outer ring sleeve 2, limiting rods 10 are respectively installed in the four mounting holes 103 of the bearing seat sleeve 1, and one end of the limiting rod 10 extends into the limiting groove 203 of the outer ring sleeve 2, so as to limit the relative axial rotation between the outer ring sleeve 2 and the bearing seat sleeve 1, then, after the assembly of the bearing seat sleeve 1 and the outer ring sleeve 2 is completed, the inner ring sleeve and its rolling body are assembled, the inner ring sleeve is composed of two angular contact ball bearing inner rings 3 and one roller bearing inner ring 5, and the roller bearing inner ring 5 is located between the two angular contact ball bearing inner rings 3. Two rows of spherical balls 4 are respectively installed into the ball raceway 201 on the inner side of the outer ring sleeve 2, and one row of cylindrical rollers 6 is installed into the roller raceway 202 on the inner side of the outer ring sleeve 2, during assembly, it is necessary to pay attention to the fact that the side of the two angular contact ball bearing inner rings 3 close to the outer ring sleeve 2 is provided with guide inclined surfaces 301, which correspond to the ball raceway 201 respectively, and can exert axial pre-tightening force on the spherical ball 4 towards the bearing center and radial pre-tightening force on the outer ring. In addition, closed washers 8 need to be padded in the two sealing grooves formed between the inner ring sleeve and the outer ring sleeve 2, so as to enhance the sealing performance of the bearing, prevent lubricating oil leakage and foreign matter from entering. Finally, the retaining ring 101 and the locking ring 9 are installed, the retaining ring 101 is fixed above the outer ring sleeve 2 in the bearing seat sleeve 1, used to limit the axial position of the outer ring sleeve 2, prevent it from moving upward, and the locking ring 9 is installed at the bottom of the bearing seat sleeve 1, so as to fix the entire bearing structure, ensure that it remains stable during operation, after installation, the bearing needs to be debugged, check whether the outer ring sleeve 2 can freely produce axial displacement in the bearing seat sleeve 1, at the same time, verify whether the cooperation between the limiting rod 10 and the limiting groove 203 can effectively limit the coaxial rotation displacement of the outer ring sleeve 2, in addition, it is also necessary to check whether the self-aligning function of the aligning thrust washer 7 is normal, and whether the closed washer 8 in the sealing groove is installed in place, so as to ensure that the sealing performance of the bearing is good, after debugging is completed, the multifunctional integrated bearing structure can be put into use, which can simultaneously bear radial, axial load, torque load, and has self-aligning and multi-directional movement functions.
[0035] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. A multi-functional integrated bearing structure comprising an outer raceway (2), an inner raceway and three rows of rolling elements between the outer raceway (2) and the inner raceway, characterized in that: The outer sleeve (2) is sleeved with a bearing seat sleeve (1) for fixing on a rack, the inner sleeve is composed of two angular contact ball bearing inner rings (3) and a roller bearing inner ring (5), the roller bearing inner ring (5) is located between the two angular contact ball bearing inner rings (3), three rows of rolling elements are two rows of spherical balls (4) and one row of cylindrical rollers (6), the inner side of the outer sleeve (2) corresponds to the two angular contact ball bearing inner rings (3) and is provided with ball rolling grooves (201) matched with the two rows of spherical balls (4), and the inner side of the outer sleeve (2) corresponds to the roller bearing inner ring (5) and is provided with roller rolling grooves (202) matched with the cylindrical rollers (6).
2. The multi-functional integrated bearing structure of claim 1, wherein: The outer sleeve (2) is integrally formed by two outer sleeve edges and an outer sleeve body, the outer sleeve edges are located at the upper and lower ends of the outer sleeve body, and the outer sleeve edges and the outer sleeve body are both spherical ring structures, the inner surface of the spherical ring structure is a part of a spherical surface concentric with the outer surface, the axial height of the outer sleeve edge is smaller than the axial height of the outer sleeve body, and the outer sleeve edge is inclined to the axial direction, and the outer sleeve edge and the outer sleeve body form a continuous and smooth spherical surface structure.
3. The multi-functional integrated bearing structure of claim 2, wherein: The inner surface of the bearing seat sleeve (1) is linear, and the outer spherical surface of the outer sleeve body of the outer sleeve (2) at the maximum diameter is gap-fitted with the linear inner surface of the bearing seat sleeve (1).
4. The multi-functional integrated bearing structure of claim 2, wherein: The inner surface of the bearing seat sleeve (1) and the corresponding positions of the two outer sleeve edges of the outer sleeve (2) are both provided with ring grooves (102), the ring grooves (102) and the outer sleeve edges of the outer sleeve (2) are both provided with self-lubricating angular contact thrust washers (7) with spherical surfaces, and the spherical surfaces of the angular contact thrust washers (7) are matched with the spherical ring structures of the outer sleeve edges.
5. The multi-functional integrated bearing structure of claim 3, wherein: Four mounting holes (103) with the same height are uniformly arranged on the bearing seat sleeve (1), four limiting grooves (203) are arranged on the outer circumferential surface of the outer sleeve body of the outer sleeve (2), the four limiting grooves (203) extend along the axial direction and are uniformly distributed, a limiting rod (10) is fixedly installed in each mounting hole (103), one end of the limiting rod (10) extends into the corresponding limiting groove (203), the limiting rod (10) is matched with the limiting groove (203), and the relative axial rotation between the outer sleeve (2) and the bearing seat sleeve (1) is limited.
6. The multi-functional integrated bearing structure of claim 1, wherein: Two sealing grooves are formed between the outer sleeve (2) and the two angular contact ball bearing inner rings (3), the two ball rolling grooves (201) and the roller rolling groove (202) are located between the two sealing grooves, and the two sealing grooves are both provided with sealing washers (8).
7. The multi-functional integrated bearing structure of claim 6, wherein: The side of each of the two angular contact ball bearing inner rings (3) close to the outer sleeve (2) is provided with an inner sealing groove (302), and the inner surface of the outer sleeve (2) is provided with an outer sealing groove (204) corresponding to the two inner sealing grooves (302), and the outer sealing groove (204) and the corresponding inner sealing groove (302) jointly form a sealing groove.
8. The multi-functional integrated bearing structure of claim 1, wherein: Two corner contact ball bearing inner ring (3) near the outer ring cover (2) one side is equipped with guide slope (301), two guide slope (301) respectively with two ball raceway (201) corresponding, and two guide slope (301) respectively can exert two rows of spherical ball (4) to the axial pre-tightening force and the radial pre-tightening force to the bearing center to the outer ring.
9. The multi-functional integrated bearing structure of claim 1, wherein: The bearing seat sleeve (1) is fixed with a retainer ring (101) above the outer ring cover (2), and a locking ring (9) is installed at the bottom of the bearing seat sleeve (1).
10. The multi-functional integrated bearing structure of any one of claims 1-9, wherein: The specific assembly process of the multifunctional integrated bearing structure includes the following steps: Step one: the inner surface of the bearing seat sleeve (1) is linear, used to cooperate with the outer ring cover (2), insert the outer ring cover (2) into the bearing seat sleeve (2), ensure that the maximum diameter of the outer ring body spherical surface of the outer ring cover (2) is gap fitted with the linear inner surface of the bearing seat sleeve (1), during installation, ensure that the two outer ring edges of the outer ring cover (2) are aligned with the ring groove (102) of the bearing seat sleeve (1), and a self-lubricating aligning thrust washer (7) with spherical surface is placed between the ring groove (102) and the outer ring edge, limit rods (10) are respectively installed in the four installation holes (103) of the bearing seat sleeve (1), and one end of the limit rod (10) is inserted into the limit groove (203) of the outer ring cover (2); Step two: after the assembly of the bearing seat sleeve (1) and the outer ring cover (2) is completed, the inner ring cover and its rolling body are assembled, the inner ring cover is composed of two corner contact ball bearing inner rings (3) and one roller bearing inner ring (5), and the roller bearing inner ring (5) is located between the two corner contact ball bearing inner rings (3), two rows of spherical balls (4) are respectively installed into the ball raceway (201) on the inner side of the outer ring cover (2), and a row of cylindrical rollers (6) is installed into the roller raceway (202) on the inner side of the outer ring cover (2), during assembly, it should be noted that the two corner contact ball bearing inner rings (3) are provided with guide slopes (301) on one side close to the outer ring cover (2), and the guide slopes (301) correspond to the ball raceway (201) respectively, in addition, a sealing washer (8) is required to be placed in the two sealing channels formed between the inner ring cover and the outer ring cover (2); Step three: install the retainer ring (101) and the locking ring (9), install the locking ring (9) at the bottom of the bearing seat sleeve (1) to fix the entire bearing structure and ensure its stability during operation, after installation, the bearing needs to be debugged, check whether the outer ring cover (2) can freely move axially in the bearing seat sleeve (1), at the same time, verify whether the cooperation between the limit rod (10) and the limit groove (203) can effectively limit the coaxial rotational displacement of the outer ring cover (2), in addition, check whether the self-aligning function of the aligning thrust washer (7) is normal, and whether the sealing washer (8) in the sealing channel is installed in place, to ensure the good sealing performance of the bearing, after debugging, the multifunctional integrated bearing structure can be put into use.