Hub bearing and bearing assembling device

Abstract

The invention relates to the technical field of hub bearings, and provides a hub bearing and a bearing assembling device.The hub bearing comprises a bearing pedestal, an inner ring and an outer ring, the inner ring is arranged on the outer circumferential wall of the bearing pedestal, the outer ring is arranged on the outer circumferential side of the inner ring in a sleeving mode, and a first rolling ring way is formed between the outer circumferential wall of the inner ring and the inner circumferential wall of the outer ring; a plurality of first rolling balls are embedded in the first rolling ring way in a rolling manner; a second rolling ring path is formed between the outer peripheral wall of the bearing seat and the inner peripheral wall of the outer ring, and a plurality of second rolling balls are embedded in the second rolling ring path in a rolling manner; a first flange plate is arranged on the peripheral wall of the bearing seat, a second flange plate is arranged on the peripheral wall of the outer ring, the first flange plate is provided with a first connecting hole, the second flange plate is provided with a second connecting hole, and the first connecting hole and the second connecting hole are arranged in a staggered mode. According to the hub bearing, the disassembly and assembly convenience of the hub bearing can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of wheel hub bearings, and in particular to a wheel hub bearing and a bearing assembly device. Background Art

[0002] The wheel hub bearing is one of the key parts of a car. The inner ring of the bearing is usually connected to the wheel hub, and the outer ring of the bearing is connected to the steering knuckle. Its main function is to bear weight and provide precise guidance for the steering of the car wheel hub.

[0003] In the prior art, the connection between the inner ring and the wheel hub, and between the outer ring and the steering knuckle of the bearing usually adopts a press-fit interference fit to achieve a tight connection between the inner ring and the wheel hub, and between the outer ring and the steering knuckle. However, this type of connection method requires high manufacturing precision for the inner ring and the outer ring, and when the bearing needs to be replaced later, there is a cumbersome disassembly, which is time-consuming and laborious. Therefore, there is an urgent need for a wheel hub bearing that is easy to disassemble and assemble, so as to improve the convenience of disassembly and assembly between the inner ring and the wheel hub, and between the outer ring and the steering knuckle. Summary of the invention

[0004] In order to improve the convenience of disassembly and assembly of the wheel hub bearing, the present application provides a wheel hub bearing and a bearing assembly device.

[0005] In the first aspect, a wheel hub bearing provided by the present application adopts the following technical solution: A wheel hub bearing comprises a bearing seat, an inner ring and an outer ring, wherein the inner ring is arranged on the outer peripheral wall of the bearing seat, and the outer ring is sleeved on the outer peripheral side of the inner ring, a first rolling track is formed between the outer peripheral wall of the inner ring and the inner peripheral wall of the outer ring, and a plurality of first rolling balls are rollingly embedded in the first rolling track; a second rolling track is formed between the outer peripheral wall of the bearing seat and the inner peripheral wall of the outer ring, and a plurality of second rolling balls are rollingly embedded in the second rolling track; a first flange is provided on the outer peripheral wall of the bearing seat, and a second flange is provided on the outer peripheral wall of the outer ring, the first flange has a first connecting hole, the second flange has a second connecting hole, and the first connecting hole and the second connecting hole are staggered.

[0006] By adopting the above technical solution, the combination of the first rolling ball and the second rolling ball can improve the overall bearing capacity of the hub bearing and enhance the overall structural stability; the first flange is respectively arranged on the outer peripheral wall of the bearing seat and the second flange is arranged on the outer peripheral wall of the outer ring. During installation, the first flange is connected to the hub by bolts, and the second flange is connected to the steering knuckle, thereby improving the convenience of disassembly and assembly between the inner ring and the hub, and between the outer ring and the steering knuckle. In addition, the first connecting hole and the second connecting hole are arranged in a staggered manner, providing an avoidance space for the respective bolts to be connected, so as to facilitate the disassembly and assembly of the bolts, thereby improving the convenience of disassembly and assembly of the overall structure.

[0007] In a second aspect, a bearing assembly device provided by the present application adopts the following technical solution: A bearing assembly device for assembling the above-mentioned hub bearing includes an assembly table and a pushing component. The upper surface of the assembly table has an assembly station for installing the inner ring and the outer ring. A positioning convex block for sleeving the inner ring is provided on the assembly station, and the outer diameter of the positioning convex block is adapted to the inner diameter of the inner ring; the pushing component is arranged on the assembly table, and the pushing component is located on one side of the positioning convex block for pushing the outer ring.

[0008] By adopting the above technical solution, when installing the inner and outer rings of the bearing, the inner ring is sleeved on the outer peripheral side of the positioning convex block to fix the inner ring, and then the outer ring is sleeved on the outer peripheral side of the inner ring. When installing the outer ring, the inner peripheral wall of the outer ring is forced to abut against the outer peripheral wall of the inner ring, leaving a relatively large space between the inner ring and the outer ring for the first rolling balls to be embedded; then, after placing a plurality of first rolling balls in the first rolling raceway in sequence, a certain thrust is applied to the outer ring through the pushing component, forcing the outer ring to displace relative to the inner ring, so that the outer ring and the inner ring can be concentric, and the plurality of first rolling balls can be embedded in the first rolling raceway.

[0009] Optionally, an installation seat is provided on the assembly table. The pushing component includes a push rod, a rotating rod, a pushing cam and a driving rod. The push rod is slidably installed on the installation seat, and one end of the push rod close to the positioning convex block has a push head; the rotating rod is rotatably connected to the installation seat and is located on the side of the push rod away from the positioning convex block. The pushing cam is arranged on the outer peripheral wall of the rotating rod for pushing the push rod; a first spring is arranged between the push rod and the installation seat. Under normal conditions, the first spring forces the push rod to slide towards the side away from the positioning convex block; one end of the driving rod is connected to the rotating rod.

[0010] By adopting the above technical solution, after a plurality of first rolling balls are placed in the first rolling raceway, the driving rod is used to force the rotating rod to rotate, so that the outer peripheral wall of the pushing cam can push the push rod, forcing the push rod to slide towards the side close to the positioning convex block, so that the push head of the push rod can push the outer ring, forcing the outer ring to displace to be concentric with the inner ring, and thus the plurality of first rolling balls can be embedded in the first rolling raceway.

[0011] Optionally, a limiting convex block is provided on the assembly station. The limiting convex block is located on the side of the positioning convex block away from the push rod. When the outer ring is sleeved on the outer peripheral side of the inner ring and abuts against the limiting convex block, the inner peripheral wall of the outer ring abuts against the outer peripheral wall of the inner ring, and the center of the outer ring is located on the side of the center of the inner ring close to the push rod; the limiting convex block is slidably installed on the assembly table, and the assembly table is provided with a lifting component for driving the limiting convex block to lift.

[0012] By adopting the above technical solution, the setting of the limiting bump provides a positioning effect for the installation of the outer ring. When installing the outer ring, the outer ring is sleeved on the outer peripheral side of the inner ring, and the outer peripheral wall of the outer ring is forced to abut against the side wall of the limiting bump close to the inner ring, so that the inner peripheral wall of the outer ring can be forced to abut against the outer peripheral wall of the inner ring, and the center of the outer ring is located on the side of the inner ring close to the ejector rod. Such a design not only facilitates the placement of the first rolling balls, but also facilitates the subsequent accurate pushing of the outer ring by the ejector rod, improving the operational convenience of the overall structure.

[0013] Optionally, a lifting groove is formed on the upper surface of the assembly table, and the limiting bump is slidably installed in the lifting groove; the lifting assembly includes a pull rope and a second spring. One end of the pull rope is connected to the limiting bump, and the other end is connected to the rotating rod; the second spring is arranged between the limiting bump and the assembly table. Under normal conditions, the second spring forces the limiting bump to lift and expose above the upper surface of the assembly table; when the driving rod is driven to rotate, the rotating rod forces the limiting bump to sink into the lifting groove through the pull rope; and when the limiting bump sinks into the lifting groove and the driving rod continues to rotate, the ejector rod pushes the outer ring.

[0014] By adopting the above technical solution, when the outer ring is sleeved on the outer peripheral side of the inner ring and the inner peripheral wall of the outer ring abuts against the outer peripheral wall of the inner ring, pulling the driving rod forces the rotating rod to rotate, and the rotating rod can pull the limiting bump through the pull rope, so as to force the limiting bump to sink into the lifting groove, facilitating the subsequent pushing of the outer ring by the ejector rod. After the driving rod forces the limiting bump to sink into the lifting groove, continue to drive the driving rod to rotate, so that the rotating rod continues to rotate. At this time, the rotating rod can push the ejector rod through the pushing cam to push the outer ring, forcing the inner ring and the outer ring to remain concentric, improving the operational convenience of the overall structure.

[0015] Optionally, an isolator is provided at the bottom of the assembly table. When a plurality of the first rolling balls are embedded in the first rolling raceway and force the inner ring and the outer ring to remain concentric, the isolator is used to force the plurality of first rolling balls to be arranged at intervals around the central axis of the inner ring; the isolator includes a first pushing assembly and a second pushing assembly that act in sequence; the first pushing assembly is used to force the plurality of first rolling balls to abut against each other to position the plurality of first rolling balls; when the plurality of first rolling balls abut against each other, the second pushing assembly is used to force the plurality of first rolling balls to be spaced apart in sequence.

[0016] By adopting the above technical solution, the outer ring is pushed, and after the inner ring and the outer ring are concentric, first, the first pushing component forces the plurality of first rolling balls to abut against each other to determine the positions of the plurality of first rolling balls in the first rolling track. After the plurality of first rolling balls abut against each other under the action of the first pushing component, the second pushing component is used to isolate the plurality of first rolling balls in sequence. The separation of the plurality of first rolling balls facilitates the subsequent installation of the bearing cage. Before the second pushing component acts, the first pushing component is used to determine the positions of the plurality of first rolling balls, so that when the second pushing component acts, it can accurately isolate the plurality of first rolling balls one by one, greatly improving the operation convenience of the overall structure.

[0017] Optionally, a through slot is formed on the surface of the assembly table. When the inner ring and the outer ring on the outside of the positioning convex block are concentric, the through slot communicates with the first rolling track. The through slot is arranged in an arc around the central axis of the positioning convex block. The two ends of the through slot respectively form a first point and a second point; the first pushing component includes a first lifting seat, a fixed strip, a movable strip and a guiding member. The first lifting seat is slidably installed at the bottom of the assembly table. One end of the fixed strip is fixed to the first lifting seat, and the other end extends to the first point of the through slot. One end of the movable strip is slidably installed on the first lifting seat, and the other end extends into the through slot and can slide along the arc of the through slot; the guiding member is arranged between the first lifting seat and the movable strip. Under normal conditions, the guiding member forces the fixed strip and the movable strip to fit together, and both the fixed strip and the movable strip are located at the first point of the through slot; when the first lifting seat is lifted and forces the fixed strip and the movable strip to be inserted into the first rolling track, the guiding member forces the movable strip to slide to the second point; and when the movable strip slides to the second point, the fixed strip and the movable strip jointly clamp the plurality of first rolling balls to force the plurality of first rolling balls to abut against each other.

[0018] By adopting the above technical solution, under normal conditions (when the fixed strip and the movable strip are not inserted into the first rolling track), both the fixed strip and the movable strip are located at the first point of the through slot. After the inner ring and the outer ring are concentric, the first lifting seat is driven to lift, so that the upper ends of the fixed strip and the movable strip are simultaneously inserted into the first rolling track from the first point. After the movable strip is inserted into the first rolling track, under the action of the guiding member, the movable strip can slide along the through slot to the second point, thereby pushing the first rolling balls in the first rolling track and forcing all the first rolling balls to abut against each other, so that the subsequent second pushing component can accurately isolate the plurality of first rolling balls, improving the operation convenience of the overall structure.

[0019] Optionally, the guiding member includes a guiding post and a third spring. A guiding groove is formed in the inner wall of the through groove. One end of the guiding post is connected to the movable strip, and the other end is slidably fitted into the guiding groove. The guiding groove includes a first guiding portion and a second guiding portion. The two ends of the first guiding portion extend along the curvature of the through groove. One end of the second guiding portion communicates with one end of the first guiding portion. When the movable strip extends into the first rolling track, the guiding post moves into the first guiding portion. When the movable strip moves downward out of the first rolling track, the guiding post moves into the second guiding portion. The third spring is disposed between the movable strip and the first lifting seat. When the guiding post moves into the first guiding portion, the third spring forces the movable strip to slide to the second position point of the through groove.

[0020] By adopting the above technical solution, in the normal state (when the fixed strip and the movable strip are not inserted into the first rolling track), at this time, the guiding post is located in the second guiding portion, so that the fixed strip and the movable strip can be in contact with each other, and the fixed strip and the movable strip are forced to be located at the first position point of the through groove. When the first lifting seat is forced to lift and drives the fixed strip and the movable strip to be inserted into the first rolling track, at this time, the guiding post moves into the first guiding portion under the drive of the movable strip. At this time, the third spring resumes deformation, so that the movable strip is forced to slide to the second position point of the through groove (during the sliding process of the movable strip, the guiding post slides in the first guiding portion), thereby forcing all the first rolling balls to be in contact with each other and improving the operation convenience of the overall structure.

[0021] Optionally, the second pushing assembly includes a second lifting seat and a pushing strip. The second lifting seat is slidably mounted on the bottom of the assembly table. The pushing strip is vertically arranged. The lower end of the pushing strip is connected to the second lifting seat. A plurality of pushing strips are arranged at intervals around the central axis of the positioning projection. An isolation gap for accommodating a single first rolling ball is formed between two adjacent pushing strips. When the movable strip slides to the second position point, a positioning area is formed between the fixed strip and the movable strip, and a plurality of first rolling balls are in contact with each other in the positioning area. The heights of the upper end surfaces of the pushing strips are set differently, and the heights of the upper end surfaces of the plurality of pushing strips gradually decrease from the side of the fixed strip close to the positioning area to the side of the fixed strip far from the positioning area.

[0022] By adopting the above technical solution, after the multiple first rolling balls in the first rolling ring track abut against each other, the second lifting seat is driven to be lifted, forcing the squeezing and pushing strip with the highest upper end surface height to be inserted into the first rolling ring track first, and inserted between two adjacent first rolling balls, so as to separate the two adjacent first rolling balls, and continue to lift the second lifting seat, so that the squeezing and pushing strip with the second highest upper end surface height is inserted into the first rolling ring track, and inserted between the corresponding two adjacent first rolling balls, so as to separate the corresponding two adjacent first rolling balls. As the second lifting seat continues to be lifted, the multiple squeezing and pushing strips are inserted into the first rolling ring track in turn, thereby isolating the multiple first rolling balls in turn, so that the multiple first rolling balls can be evenly spaced around the central axis of the positioning protrusion, so as to facilitate the subsequent installation of the bearing retainer, greatly improving the operational convenience of the overall structure.

[0023] Optionally, the top wall of the second lifting seat is provided with a plurality of sliding grooves, and the plurality of sliding grooves are arranged corresponding to the plurality of pushing strips, and the lower end of each of the pushing strips is slidably passed through the corresponding sliding groove, and the pushing strips are slidably installed on the second lifting seat through the sliding grooves; a fourth spring is provided between the pushing strips and the second lifting seat.

[0024] By adopting the above technical solution and setting the sliding groove and the fourth spring, the pushing strip first inserted into the first rolling ring track can slide along the sliding groove under the obstruction from the inner wall of the first rolling ring track, thereby ensuring that the second lifting seat can be continuously lifted, thereby allowing multiple pushing strips to be inserted into the first rolling ring track.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the arrangement of the first flange and the second flange, the combination of the first ball and the second ball, the overall load-bearing capacity of the hub bearing can be improved and the overall structural stability can be enhanced; the first flange is arranged on the outer peripheral wall of the bearing seat and the second flange is arranged on the outer peripheral wall of the outer ring. During installation, the first flange is connected to the hub by bolts, and the second flange is connected to the steering knuckle, so as to improve the convenience of disassembly and assembly between the inner ring and the hub, and between the outer ring and the steering knuckle. In addition, the first connecting hole and the second connecting hole are arranged in an offset manner, so as to provide an avoidance space for the respective bolts to be connected, so as to facilitate the disassembly and assembly of the bolts, thereby improving the convenience of disassembly and assembly of the overall structure; 2. The setting of the limiting protrusion provides a positioning effect for the installation of the outer ring. When the outer ring is installed, the outer ring is sleeved on the outer peripheral side of the inner ring, and the outer peripheral wall of the outer ring is forced to abut against the side wall of the limiting protrusion close to the inner ring, so that the inner peripheral wall of the outer ring can be forced to abut against the outer peripheral wall of the inner ring, and the center of the outer ring is located on the side of the center of the inner ring close to the push rod. Such a design is convenient for the placement of the first rolling ball and the push rod to accurately push the outer ring later, thereby improving the operational convenience of the overall structure; 3. Through the settings of the first pushing component and the second pushing component, the outer ring is pushed. After the inner ring and the outer ring are made concentric, first, the first pushing component forces multiple first rolling balls to abut against each other to determine the positions of the multiple first rolling balls in the first rolling track. After the multiple first rolling balls abut against each other under the action of the first pushing component, the second pushing component is then used to separate the multiple first rolling balls in sequence. The separation of the multiple first rolling balls can facilitate the subsequent installation of the bearing cage. Before the second pushing component acts, the first pushing component is used to determine the positions of the multiple first rolling balls, so that when the second pushing component acts, it can accurately separate the multiple first rolling balls one by one, greatly improving the operational convenience of the overall structure. Description of the Drawings

[0026] Figure 1 is the schematic diagram of the overall structure of Embodiment 1; Figure 2 is the partial cross-sectional view showing the inner ring and the outer ring of Embodiment 1; Figure 3 is the schematic diagram of the overall structure of Embodiment 2; Figure 4 is the schematic diagram of the structure showing the positioning bump of Embodiment 2; Figure 5 is the partial cross-sectional view showing the limiting bump of Embodiment 3; Figure 6 is the partial cross-sectional view showing the lifting component of Embodiment 3; Figure 7 is the partial cross-sectional view showing the isolator of Embodiment 4; Figure 8 is the schematic diagram of the structure showing the first pushing component of Embodiment 4; Figure 9 is the partial cross-sectional view showing the movable bar at the first position of Embodiment 4; Figure 10 is the partial cross-sectional view showing the movable bar at the second position of Embodiment 4; Figure 11 is the partial cross-sectional view showing the extrusion bar inserted into the first rolling track of Embodiment 4; Figure 12 is the partial cross-sectional view showing the guide groove of Embodiment 4; Figure 13 is the schematic diagram of the structure showing the second pushing component of Embodiment 4.

[0027] Description of reference numerals: 1. Bearing housing; 11. First flange; 111. First connection hole; 12. Embedded annular groove; 13. Third rolling groove; 2. Inner ring; 21. First rolling groove; 3. Outer ring; 31. First rolling raceway; 311. Positioning area; 32. First rolling ball; 33. Second rolling raceway; 34. Second rolling ball; 35. Second flange; 351. Second connection hole; 36. Second rolling groove; 37. Fourth rolling groove; 38. First cage; 39. Second cage; 4. Assembly table; 41. Assembly station; 42. Positioning bump; 43. Mounting seat; 44. Limiting bump; 441. Limiting arc surface; 45. Lifting groove; 46. Through groove; 461. First point; 462. Second point; 47. Guide groove; 471. First guide part; 472. Second guide part; 48. First guide rod; 49. Second guide rod; 5. Thrust assembly; 51. Thrust rod; 511. Thrust head; 52. Rotating rod; 53. Thrust cam; 54. Driving rod; 55. First spring; 6. Lifting assembly; 61. Pulling rope; 62. Second spring; 7. First pushing assembly; 71. First lifting seat; 711. Moving groove; 72. Fixed strip; 73. Movable strip; 74. Guide post; 8. Second pushing assembly; 81. Second lifting seat; 811. Sliding groove; 82. Pushing strip; 83. Isolation gap; 84. Fourth spring. Detailed implementation manners

[0028] The following is combined with Figures 1-13 to further elaborate on this application in detail.

[0029] Embodiment 1: The embodiment of this application discloses a hub bearing.

[0030] Referring to Figure 1 and Figure 2 , a hub bearing includes a bearing housing 1, an inner ring 2 and an outer ring 3. An embedded annular groove 12 is formed on the outer peripheral wall at one end of the bearing housing 1. The inner ring 2 is sleeved in the embedded annular groove 12. In this embodiment, the connection between the bearing housing 1 and the inner ring 2 is a press-fit with interference to fix the inner ring 2 in the embedded annular groove 12 of the bearing housing 1; the outer ring 3 is sleeved on the outer peripheral side of the inner ring 2. A first rolling groove 21 is formed on the outer peripheral wall of the inner ring 2, and a second rolling groove 36 is formed on the inner peripheral wall of the outer ring 3. The first rolling groove 21 and the second rolling groove 36 together form a first rolling raceway 31, and a plurality of first rolling balls 32 are rollingly embedded in the first rolling raceway 31.

[0031] A third rolling groove 13 is formed on the outer circumferential wall of the bearing seat 1, and a fourth rolling groove 37 is formed on the inner circumferential wall of the outer ring 3. The third rolling groove 13 and the fourth rolling groove 37 are combined to form a second rolling ring 33, and a plurality of second balls 34 are rollingly embedded in the second rolling ring 33; a first retaining frame 38 and a second retaining frame 39 are respectively installed between the inner ring 2 and the outer ring 3, and the first retaining frame 38 is used to limit the relative positions of the plurality of first balls 32 so that the plurality of first balls 32 are evenly spaced around the central axis of the inner ring 2, and the second retaining frame 39 is used to limit the relative positions of the plurality of second balls 34 so that the plurality of second balls 34 are evenly spaced around the central axis of the inner ring 2 (the first retaining frame 38 and the second retaining frame 39 are both prior art, and their structures are not elaborated in detail here).

[0032] A first flange 11 is fixedly mounted on the outer peripheral wall of the bearing seat 1, and a second flange 35 is fixedly mounted on the outer peripheral wall of the outer ring 3. The first flange 11 has a plurality of first connecting holes 111, and the second flange 35 has a plurality of second connecting holes 351. The plurality of first connecting holes 111 and the plurality of second connecting holes 351 are staggered.

[0033] The implementation principle of Example 1 of the present application is as follows: the combination of the first rolling ball 32 and the second rolling ball 34 can improve the overall load-bearing capacity of the wheel hub bearing and enhance the overall structural stability; a first flange 11 is provided on the outer peripheral wall of the bearing seat 1, and a second flange 35 is provided on the outer peripheral wall of the outer ring 3. During installation, the first flange 11 is connected to the wheel hub by bolts, and the second flange 35 is connected to the steering knuckle, thereby improving the convenience of disassembly and assembly between the inner ring 2 and the wheel hub, and between the outer ring 3 and the steering knuckle; and the first connecting hole 111 and the second connecting hole 351 are staggered to provide avoidance space for their respective bolt connections to facilitate the disassembly and assembly of the bolts, thereby improving the convenience of disassembly and assembly of the overall structure.

[0034] Embodiment 2: The embodiment of the present application discloses a bearing assembly device.

[0035] Reference Figure 3 , Figure 4 A bearing assembly device is used to assemble the wheel hub bearing of Example 1, including an assembly table 4 and a thrust assembly 5. The upper surface of the assembly table 4 has an assembly station 41 for installing the inner ring 2 and the outer ring 3. A positioning protrusion 42 is fixedly installed on the assembly station 41. The outer diameter of the positioning protrusion 42 is adapted to the inner diameter of the inner ring 2 so as to be matched with the inner ring 2.

[0036] The pushing component 5 is arranged on the assembly table 4. The pushing component 5 is located on one side of the positioning bump 42 for pushing the outer ring 3. An installation seat 43 is fixedly installed on the assembly table 4. The pushing component 5 includes a push rod 51, a rotating rod 52, a pushing cam 53 and a driving rod 54. The push rod 51 is slidably installed on the installation seat 43. Both ends of the push rod 51 extend along the radial direction of the positioning bump 42 and can slide along its own length direction. A push head 511 is fixedly installed at one end of the push rod 51 close to the positioning bump 42. The rotating rod 52 is rotatably connected to the installation seat 43 and is located on the side of the push rod 51 away from the positioning bump 42. The pushing cam 53 is fixedly installed on the outer peripheral wall of the rotating rod 52 for pushing the push rod 51.

[0037] A first spring 55 is sleeved on the outer peripheral side of the push rod 51. One end of the first spring 55 is fixedly connected to the push head 511, and the other end is fixedly connected to the installation seat 43. Under normal conditions, the first spring 55 forces the push rod 51 to slide towards the side away from the positioning bump 42. One end of the rotating rod 52 extends out of the installation seat 43, and one end of the driving rod 54 is connected to one end of the rotating rod 52.

[0038] The implementation principle of Embodiment 2 of this application is as follows: When installing the inner and outer rings 3 of the bearing, the inner ring 2 is sleeved on the outer peripheral side of the positioning bump 42 to fix the inner ring 2. Then the outer ring 3 is sleeved on the outer peripheral side of the inner ring 2. When installing the outer ring 3, the inner peripheral wall of the outer ring 3 is forced to abut against the outer peripheral wall of the inner ring 2, leaving a relatively large space between the inner ring 2 and the outer ring 3 for the first rolling balls 32 to be embedded. Then, after placing a plurality of first rolling balls 32 in the first rolling raceway 31 in sequence, the driving rod 54 is used to force the rotating rod 52 to rotate, so that the outer peripheral wall of the pushing cam 53 can push the push rod 51, forcing the push rod 51 to slide towards the side close to the positioning bump 42, so that the push head 511 of the push rod 51 can push the outer ring 3, forcing the outer ring 3 to move to be concentric with the inner ring 2, thereby embedding the plurality of first rolling balls 32 in the first rolling raceway 31 and improving the assembly convenience between the inner and outer rings 3 of the bearing.

[0039] Embodiment 3: This application embodiment discloses a bearing assembly device.

[0040] The difference between the bearing assembly device disclosed in this application embodiment and Embodiment 2 lies in: Refer to Figure 5 、 Figure 6, in this embodiment, a lifting groove 45 is formed on the upper surface of the assembly table 4. The lifting groove 45 is located on the side of the positioning convex block 42 away from the ejector rod 51. The lifting groove 45 is provided with a limiting convex block 44. The side wall of the limiting convex block 44 close to the positioning convex block 42 forms a limiting arc surface 441. The limiting arc surface 441 is used to abut against the outer peripheral wall of the outer ring 3. When the outer ring 3 is sleeved on the outer peripheral side of the inner ring 2 and the outer peripheral wall of the outer ring 3 abuts against the limiting arc surface 441 of the limiting convex block 44, the inner peripheral wall of the outer ring 3 abuts against the outer peripheral wall of the inner ring 2, and the center of the outer ring 3 is located on the side of the center of the inner ring 2 close to the ejector rod 51.

[0041] In this embodiment, the limiting convex block 44 is slidably installed in the lifting groove 45 of the assembly table 4. The assembly table 4 is provided with a lifting assembly 6 for driving the limiting convex block 44 to lift and lower; the lifting assembly 6 includes a pulling rope 61 and a second spring 62. One end of the pulling rope 61 is connected to the lower end surface of the limiting convex block 44, and the other end passes through the assembly table 4 and is fixedly connected to the pushing cam 53 of the rotating rod 52; one end of the second spring 62 is fixedly connected to the limiting convex block 44, and the other end is fixedly connected to the lower surface of the assembly table 4. Under normal conditions, the second spring 62 forces the limiting convex block 44 to lift and expose above the upper surface of the assembly table 4. When the driving rod 54 is driven to rotate, the rotating rod 52 forces the limiting convex block 44 to sink into the lifting groove 45 through the pulling rope 61; and when the limiting convex block 44 sinks into the lifting groove 45 and the driving rod 54 continues to rotate, the ejector rod 51 pushes the outer ring 3 (that is, after the limiting convex block 44 sinks into the lifting groove 45, the rotating rod 52 is continuously driven to rotate. At this time, the outer peripheral wall of the pushing cam 53 pushes the ejector rod 51).

[0042] The implementation principle of Embodiment 3 of this application is as follows: The setting of the limiting convex block 44 provides a positioning effect for the installation of the outer ring 3. When installing the outer ring 3, the outer ring 3 is sleeved on the outer peripheral side of the inner ring 2, and the outer peripheral wall of the outer ring 3 is forced to abut against the side wall of the limiting convex block 44 close to the inner ring 2, so that the inner peripheral wall of the outer ring 3 can be forced to abut against the outer peripheral wall of the inner ring 2, and the center of the outer ring 3 is located on the side of the center of the inner ring 2 close to the ejector rod 51. Such a design not only facilitates the placement of the first rolling balls 32, but also facilitates the subsequent accurate pushing of the outer ring 3 by the ejector rod 51, improving the operation convenience of the overall structure.

[0043] The outer ring 3 is sleeved on the outer peripheral side of the inner ring 2, and after the inner peripheral wall of the outer ring 3 abuts against the outer peripheral wall of the inner ring 2, the driving rod 54 is pulled to force the rotating rod 52 to rotate. The rotating rod 52 can pull the limiting protrusion 44 through the pull rope 61, so as to force the limiting protrusion 44 to sink into the lifting groove 45, so that the ejector rod 51 can push the outer ring 3 subsequently. After the driving rod 54 drives the limiting protrusion 44 to sink into the lifting groove 45, the driving rod 54 is continuously driven to rotate, so that the rotating rod 52 continues to rotate. At this time, the rotating rod 52 can push the ejector rod 51 through the push cam 53 to push the outer ring 3, so as to force the inner ring 2 and the outer ring 3 to be concentric, improving the operation convenience of the overall structure.

[0044] Embodiment 4: An embodiment of the present application discloses a bearing assembly device.

[0045] The difference between the bearing assembly device disclosed in the embodiment of the present application and Embodiment 2 is that: Referring to Figure 7 、 Figure 8 , in this embodiment, an isolator is installed at the bottom of the assembly table 4. When a plurality of first balls 32 are embedded in the first rolling raceway 31 and force the inner ring 2 and the outer ring 3 to be concentric, the isolator is used to force the plurality of first balls 32 to be arranged at intervals around the central axis of the inner ring 2.

[0046] The isolator includes a first pushing component 7 and a second pushing component 8 that act in sequence; the first pushing component 7 is used to force the plurality of first balls 32 to abut against each other to position the plurality of first balls 32; when the plurality of first balls 32 abut against each other, the second pushing component 8 is used to force the plurality of first balls 32 to be spaced apart in sequence.

[0047] Referring to Figure 9 、 Figure 10 、 Figure 11 , an insertion groove 46 is formed on the surface of the assembly table 4. The insertion groove 46 is arranged in an arc shape around the central axis of the positioning protrusion 42. When the inner ring 2 and the outer ring 3 outside the positioning protrusion 42 are concentric, the insertion groove 46 communicates with the first rolling raceway 31; for the convenience of description, one end of the insertion groove 46 is defined as the first point 461, and the other end is defined as the second point 462.

[0048] Referring to Figure 7 、 Figure 8, the first driving component 7 includes a first lifting seat 71, a fixed bar 72, a movable bar 73 and a guiding member. A plurality of first guiding rods 48 are connected to the bottom of the assembly table 4. The first guiding rods 48 are vertically arranged. The upper ends of the first guiding rods 48 are fixedly connected to the lower surface of the assembly table 4. The lower ends of the first guiding rods 48 are slidably inserted through the first lifting seat 71. The first lifting seat 71 is slidably mounted on the bottom of the assembly table 4 through a plurality of first guiding rods 48 to be able to lift and lower; in this embodiment, the first lifting seat 71 is arc-shaped, and the virtual central axis of the first lifting seat 71 coincides with the central axis of the positioning convex block 42.

[0049] Refer to Figure 7 , Figure 8 , Figure 9 , the fixed bar 72 and the movable bar 73 are both vertically arranged. The lower end of the fixed bar 72 is fixedly connected to the inner arc surface of the first lifting seat 71. The upper end of the fixed bar 72 extends to the first point 461 of the through slot 46; a moving slot 711 is formed in the inner arc surface of the first lifting seat 71. The two ends of the moving slot 711 extend along the arc of the first lifting seat 71. The lower end of the movable bar 73 is slidably mounted in the moving slot 711. The upper end of the movable bar 73 extends to the through slot 46 to be able to slide along the arc of the through slot 46.

[0050] Refer to Figure 7 , Figure 8 , Figure 10 , the guiding member is arranged between the first lifting seat 71 and the movable bar 73. Under normal conditions, the guiding member forces the fixed bar 72 and the movable bar 73 to fit together, and both the fixed bar 72 and the movable bar 73 are located at the first point 461 of the through slot 46; when the first lifting seat 71 is lifted and forces the upper ends of the fixed bar 72 and the movable bar 73 to be inserted into the first rolling ring track 31, the guiding member forces the movable bar 73 to slide to the second point 462; and when the movable bar 73 slides to the second point 462, the fixed bar 72 and the movable bar 73 jointly clamp a plurality of first balls 32 to force the plurality of first balls 32 to abut against each other.

[0051] Refer to Figure 8 , Figure 12, in this embodiment, the guiding member includes a guiding column 74 and a third spring. A guiding groove 47 is formed in the inner wall of the passing groove 46. One end of the guiding column 74 is fixedly connected to the side wall of the movable strip 73, and the other end extends into the guiding groove 47. The guiding groove 47 includes a first guiding portion 471 and a second guiding portion 472. Both ends of the first guiding portion 471 extend along the curvature of the passing groove 46. One end of the second guiding portion 472 communicates with one end of the first guiding portion 471. The first guiding portion 471 and the second guiding portion 472 are combined to form an "L shape". When the movable strip 73 extends into the first rolling track 31, the guiding column 74 moves into the first guiding portion 471. When the movable strip 73 moves downward out of the first rolling track 31, the guiding column 74 moves into the second guiding portion 472.

[0052] The third spring (not shown in the figure) is installed in the moving groove 711 of the first lifting seat 71. The third spring is arc-shaped. One end of the third spring is fixedly connected to the inner wall of the moving groove 711, and the other end is fixedly connected to the lower end of the movable strip 73. When the guiding column 74 moves into the first guiding portion 471, the third spring forces the movable strip 73 to slide from the first point 461 of the passing groove 46 to the second point 462 of the passing groove 46.

[0053] Refer to Figure 7 , Figure 11 , Figure 13 , the second pushing assembly 8 includes a second lifting seat 81 and a pushing strip 82. A plurality of second guiding rods 49 are connected to the bottom of the assembly table 4. The second guiding rods 49 are vertically arranged. The upper ends of the second guiding rods 49 are fixedly connected to the lower surface of the assembly table 4. The lower ends of the second guiding rods 49 slidably pass through the second lifting seat 81. The second lifting seat 81 is slidably installed on the bottom of the assembly table 4 through a plurality of second guiding rods 49 so as to be able to lift.

[0054] The pushing strip 82 is vertically arranged. The lower end of the pushing strip 82 is connected to the second lifting seat 81. A plurality of pushing strips 82 are arranged at intervals around the central axis of the positioning convex block 42. An isolation gap 83 for accommodating a single first ball 32 is formed between two adjacent pushing strips 82. When the movable strip 73 slides to the second point 462, a positioning area 311 is formed between the fixed strip 72 and the movable strip 73. A plurality of first balls 32 are in contact with each other in the positioning area 311. The heights of the upper end faces of the pushing strips 82 are set differently. The heights of the upper end faces of the plurality of pushing strips 82 gradually decrease from the side of the fixed strip 72 close to the positioning area 311 to the side of the fixed strip 72 far from the positioning area 311. A plurality of avoiding grooves for the pushing strips 82 to extend out need to be formed on the surface of the assembly table 4.

[0055] Refer to Figure 13, a plurality of sliding grooves 811 are formed in the top wall of the second lifting seat 81. The plurality of sliding grooves 811 are arranged corresponding to the plurality of pushing bars 82. The lower end of each pushing bar 82 slidably penetrates through the corresponding sliding groove 811, and the pushing bar 82 is slidably mounted on the second lifting seat 81 through the sliding groove 811; a fourth spring 84 is installed between each pushing bar 82 and the second lifting seat 81. One end of the fourth spring 84 is fixedly connected to the second lifting seat 81, and the other end is fixedly connected to the pushing bar 82.

[0056] It should be noted that in this embodiment, the second lifting seat 81 is annular, the central axis of the second lifting seat 81 coincides with the central axis of the positioning convex block 42, the second lifting seat 81 is located directly below the first rolling raceway 31, the first lifting seat 71 is located above the second lifting seat 81, and the inner diameter of the inner arc surface of the first lifting seat 71 is not less than the outer diameter of the second lifting seat 81. The first lifting seat 71 and the second lifting seat 81 can be driven to lift by a cylinder (the driving sources of the first lifting seat 71 and the second lifting seat 81 are not shown in this embodiment).

[0057] The implementation principle of Embodiment 4 of this application is as follows: After a plurality of first balls 32 are embedded in the first rolling raceway 31 and force the inner ring 2 and the outer ring 3 to be concentric, first, the first lifting seat 71 is driven to lift, driving the first points 461 of the fixing bar 72 and the movable bar 73 with the through slots 46 to insert into the first rolling raceway 31. After the movable bar 73 is inserted into the first rolling raceway 31, the guide post 74 is driven by the movable bar 73 to move into the first guiding portion 471. At this time, the third spring resumes deformation, thereby forcing the movable bar 73 to slide to the second point 462 of the through slot 46, so that the movable bar 73 can push the first balls 32 in the first rolling raceway 31 and force all the first balls 32 to abut against each other to determine the positions of the plurality of first balls 32 in the first rolling raceway 31.

[0058] After the plurality of first balls 32 in the first rolling raceway 31 abut against each other, the second lifting seat 81 is driven to lift, forcing the pushing bar 82 with the highest upper end surface to be inserted into the first rolling raceway 31 first and inserted between two adjacent first balls 32 to separate the two adjacent first balls 32. The second lifting seat 81 is continuously lifted, so that the pushing bar 82 with the second highest upper end surface is inserted into the first rolling raceway 31 and inserted between the corresponding adjacent two first balls 32 to separate the corresponding adjacent two first balls 32. As the second lifting seat 81 continues to lift, a plurality of pushing bars 82 are inserted into the first rolling raceway 31 in sequence, so as to separate the plurality of first balls 32 in sequence, enabling the plurality of first balls 32 to be evenly spaced around the central axis of the positioning convex block 42, which is convenient for the subsequent installation of the bearing cage and greatly improves the operation convenience of the overall structure.

[0059] During the process of successively inserting multiple pushing bars 82 into the first rolling ring channel 31, the movable bar 73 is gradually displaced back towards the fixed bar 72 under the action of the thrust. After all the multiple pushing bars 82 are inserted into the first rolling ring channel 31, the movable bar 73 can be displaced back to abut against the fixed bar 72. So that after the multiple first rolling balls 32 are evenly spaced apart, the fixed bar 72, the movable bar 73 and the pushing bars 82 can be withdrawn, which is convenient for the subsequent operators to install the cage and improves the operation convenience of the overall structure.

[0060] The above is the preferred embodiment of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A hub bearing, characterized in that: It includes a bearing seat (1), an inner ring (2) and an outer ring (3). The inner ring (2) is arranged on the outer peripheral wall of the bearing seat (1), the outer ring (3) is sleeved on the outer peripheral side of the inner ring (2), a first rolling raceway (31) is formed between the outer peripheral wall of the inner ring (2) and the inner peripheral wall of the outer ring (3), and a plurality of first balls (32) are rollingly fitted in the first rolling raceway (31); a second rolling raceway (33) is formed between the outer peripheral wall of the bearing seat (1) and the inner peripheral wall of the outer ring (3), and a plurality of second balls (34) are rollingly fitted in the second rolling raceway (33); a first flange (11) is provided on the outer peripheral wall of the bearing seat (1), a second flange (35) is provided on the outer peripheral wall of the outer ring (3), the first flange (11) has a first connection hole (111), the second flange (35) has a second connection hole (351), and the first connection hole (111) and the second connection hole (351) are arranged in a staggered manner.

2. A bearing assembly device for assembling the hub bearing of claim 1, characterized in that: It includes an assembly table (4) and a pushing component (5). The upper surface of the assembly table (4) has an assembly station (41) for installing the inner ring (2) and the outer ring (3). A positioning projection (42) for sleeving the inner ring (2) is provided on the assembly station (41), and the outer diameter of the positioning projection (42) is adapted to the inner diameter of the inner ring (2); the pushing component (5) is arranged on the assembly table (4), and the pushing component (5) is located on one side of the positioning projection (42) for pushing the outer ring (3).

3. An assembly device for a bearing according to claim 2, characterized in that: An installation seat (43) is provided on the assembly table (4). The pushing component (5) includes a push rod (51), a rotating rod (52), a pushing cam (53) and a driving rod (54). The push rod (51) is slidably installed on the installation seat (43), and one end of the push rod (51) close to the positioning projection (42) has a push head (511); the rotating rod (52) is rotatably connected to the installation seat (43) and is located on the side of the push rod (51) away from the positioning projection (42), and the pushing cam (53) is arranged on the outer peripheral wall of the rotating rod (52) for pushing the push rod (51); a first spring (55) is provided between the push rod (51) and the installation seat (43). Under normal conditions, the first spring (55) forces the push rod (51) to slide toward the side away from the positioning projection (42); one end of the driving rod (54) is connected to the rotating rod (52).

4. The bearing assembly device according to claim 3, characterized in that: A limiting projection (44) is provided on the assembly station (41), and the limiting projection (44) is located on the side of the positioning projection (42) away from the push rod (51). When the outer ring (3) is sleeved on the outer peripheral side of the inner ring (2) and abuts against the limiting projection (44), the inner peripheral wall of the outer ring (3) abuts against the outer peripheral wall of the inner ring (2), and the center of the outer ring (3) is located on the side of the center of the inner ring (2) close to the push rod (51); the limiting projection (44) is slidably installed on the assembly table (4), and the assembly table (4) is provided with a lifting component (6) for driving the limiting projection (44) to lift.

5. The bearing assembly device according to claim 4, wherein: A lifting groove (45) is formed in the upper surface of the assembly table (4), and the limiting convex block (44) is slidably installed in the lifting groove (45); the lifting assembly (6) includes a pulling rope (61) and a second spring (62), one end of the pulling rope (61) is connected to the limiting convex block (44), and the other end is connected to the rotating rod (52); the second spring (62) is arranged between the limiting convex block (44) and the assembly table (4). Under normal conditions, the second spring (62) forces the limiting convex block (44) to lift and expose above the upper surface of the assembly table (4); when the driving rod (54) is driven to rotate, the rotating rod (52) forces the limiting convex block (44) to sink into the lifting groove (45) through the pulling rope (61); and when the limiting convex block (44) sinks into the lifting groove (45) and the driving rod (54) continues to rotate, the top push rod (51) pushes the outer ring (3).

6. The bearing assembly device according to claim 2, wherein: An isolator is provided at the bottom of the assembly table (4). When a plurality of the first rolling balls (32) are fitted into the first rolling track (31) and force the inner ring (2) and the outer ring (3) to be concentric, the isolator is used to force the plurality of first rolling balls (32) to be arranged at intervals around the central axis of the inner ring (2); the isolator includes a first pushing assembly (7) and a second pushing assembly (8) that act in sequence; the first pushing assembly (7) is used to force the plurality of first rolling balls (32) to abut against each other to position the plurality of first rolling balls (32); when the plurality of first rolling balls (32) abut against each other, the second pushing assembly (8) is used to force the plurality of first rolling balls (32) to be spaced apart in sequence.

7. The bearing assembly device according to claim 6, wherein: The surface of the assembly table (4) is provided with a through groove (46). When the inner ring (2) and the outer ring (3) on the outside of the positioning convex block (42) are concentric, the through groove (46) communicates with the first rolling track (31). The through groove (46) is arranged in an arc around the central axis of the positioning convex block (42). The two ends of the through groove (46) respectively form a first point (461) and a second point (462). The first pushing component (7) includes a first lifting seat (71), a fixed strip (72), a movable strip (73) and a guiding component. The first lifting seat (71) is slidably mounted on the bottom of the assembly table (4). One end of the fixed strip (72) is fixed to the first lifting seat (71), and the other end extends to the first point (461) of the through groove (46). One end of the movable strip (73) is slidably mounted on the first lifting seat (71), and the other end extends into the through groove (46) and can slide along the arc of the through groove (46). The guiding component is arranged between the first lifting seat (71) and the movable strip (73). Under normal conditions, the guiding component forces the fixed strip (72) and the movable strip (73) to fit together, and both the fixed strip (72) and the movable strip (73) are located at the first point (461) of the through groove (46). When the first lifting seat (71) is lifted and forces the fixed strip (72) and the movable strip (73) to be inserted into the first rolling track (31), the guiding component forces the movable strip (73) to slide to the second point (462). And when the movable strip (73) slides to the second point (462), the fixed strip (72) and the movable strip (73) jointly clamp a plurality of first rolling balls (32) to force the plurality of first rolling balls (32) to abut against each other.

8. The bearing assembly device according to claim 7, characterized in that: The guiding component includes a guiding column (74) and a third spring. A guiding groove (47) is opened on the inner wall of the through groove (46). One end of the guiding column (74) is connected to the movable strip (73), and the other end is slidably fitted into the guiding groove (47). The guiding groove (47) includes a first guiding part (471) and a second guiding part (472). The two ends of the first guiding part (471) extend along the arc of the through groove (46). One end of the second guiding part (472) is communicated with one end of the first guiding part (471). When the movable strip (73) extends into the first rolling track (31), the guiding column (74) moves into the first guiding part (471). When the movable strip (73) moves downward out of the first rolling track (31), the guiding column (74) moves into the second guiding part (472). The third spring is arranged between the movable strip (73) and the first lifting seat (71). When the guiding column (74) moves into the first guiding part (471), the third spring forces the movable strip (73) to slide to the second point (462) of the through groove (46).

9. The bearing assembly device according to claim 7, wherein: The second pushing component (8) includes a second lifting seat (81) and a pushing bar (82). The second lifting seat (81) is slidably mounted on the bottom of the assembly table (4). The pushing bar (82) is arranged vertically. The lower end of the pushing bar (82) is connected to the second lifting seat (81). A plurality of pushing bars (82) are arranged at intervals around the central axis of the positioning bump (42). An isolation gap (83) for accommodating a single first rolling ball (32) is formed between two adjacent pushing bars (82). When the movable bar (73) slides to the second position (462), a positioning area (311) is formed between the fixed bar (72) and the movable bar (73). A plurality of first rolling balls (32) are in mutual contact within the positioning area (311). The heights of the upper end faces of the pushing bars (82) are set differently. The heights of the upper end faces of the plurality of pushing bars (82) gradually decrease from the side of the fixed bar (72) close to the positioning area (311) to the side of the fixed bar (72) far from the positioning area (311).

10. The bearing assembly device according to claim 9, characterized in that: A plurality of sliding grooves (811) are formed in the top wall of the second lifting seat (81). The plurality of sliding grooves (811) are arranged corresponding to the plurality of pushing bars (82). The lower end of each pushing bar (82) slidably penetrates through the corresponding sliding groove (811). The pushing bar (82) is slidably mounted on the second lifting seat (81) through the sliding groove (811). A fourth spring (84) is arranged between the pushing bar (82) and the second lifting seat (81).

Images