Bearing assembling device

Abstract

A bearing assembling device relates to the field of bearing assembling, and comprises a positioning part and a crimping part, the positioning part comprises a mounting shaft, the mounting shaft extends along the up-down direction, an inner ring and an outer ring of a bearing are sleeved on the mounting shaft, the crimping part comprises a movable part, the movable part is configured to move along the up-down direction, and the movable part can move along the up-down direction. The axial force is applied to the inner ring of the bearing, so that the inner ring is pressed in the outer ring, the assembling quality of the bearing can be ensured, the reject ratio caused by axis deviation is reduced, and the bearing assembling device is simple in structure and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing assembly, in particular to a bearing assembly device. Background Art

[0002] Bearings are an important mechanical transmission component. The main function of bearings is to support mechanical rotating bodies to reduce their friction coefficient during movement and ensure the rotation accuracy of mechanical rotating bodies. The assembly of bearings has high precision requirements. If the axis of the assembled bearing deviates, it will cause errors in the mechanical transmission process, which can easily affect the mechanical life of the mechanical rotating body and the bearing itself. In severe cases, it may even cause stress damage to the mechanical rotating body. Utility Model Content

[0003] In view of this, an object of the present invention is to provide a bearing assembly device that can ensure the assembly quality of the bearing and reduce the failure rate.

[0004] The utility model provides a bearing assembly device, including a positioning portion and a pressing portion, the positioning portion includes a mounting shaft, the mounting shaft extends in the up-down direction, the inner ring and outer ring of the bearing are sleeved on the mounting shaft, the pressing portion includes a movable part, the movable part is configured to be able to move in the up-down direction to apply an axial force to the inner ring, so that the inner ring is pressed into the outer ring.

[0005] In one embodiment, the crimping portion further includes a substrate and an adjusting member, wherein the substrate is fixedly connected to the upper end of the movable member and is connected to the upper end of the mounting shaft via the adjusting member, and the distance between the substrate and the mounting shaft is adjustable so that the movable member can move up and down together with the substrate to apply an axial force to the inner ring.

[0006] In one embodiment, an adjustment hole is provided on the base plate, the lower end of the adjustment member passes through the adjustment hole and is connected to the upper end of the mounting shaft, a fastener is sleeved on the adjustment member, the fastener is located above the base plate and is threadedly connected to the adjustment member, and by rotating the fastener, the base plate can move in the up and down directions, driving the movable member to move up and down.

[0007] In one embodiment, the number of the adjustment hole is one, and the axis of the adjustment hole coincides with the axis of the mounting shaft.

[0008] In one embodiment, the crimping portion further includes a substrate and an adjusting member, wherein the substrate is fixedly connected to the upper end of the mounting shaft and is connected to the upper end of the movable member via the adjusting member, the distance between the movable member and the substrate is adjustable, and the movable member can move in the up and down directions to apply an axial force to the inner ring.

[0009] In one embodiment, an adjustment hole is provided on the substrate, the adjustment member is threadedly connected to the adjustment hole, and its lower part passes through the adjustment hole and is connected to the upper part of the movable member, the adjustment member can rotate around its own axis relative to the movable member, and by rotating the adjustment member, the movable member can move in the up and down directions.

[0010] In one embodiment, the movable part includes at least one arc-shaped part, the inner diameter of which matches the aperture of the first inner hole of the inner ring so that the inner wall of the arc-shaped part contacts the side of the mounting shaft or has a gap.

[0011] In one embodiment, the movable member includes a columnar member, the columnar member includes an axial hole that cooperates with the mounting shaft, the axial hole passes through the columnar member in the up and down directions, and the columnar member is sleeved on the mounting shaft through the axial hole.

[0012] In one embodiment, the positioning portion further includes a base connected to the lower end of the installation shaft, and when the inner ring and the outer ring are sleeved on the installation shaft, the lower end of the outer ring contacts the upper end of the base.

[0013] In one embodiment, a support platform is provided at the upper end of the base, the lower end of the mounting shaft is connected to the upper end of the support platform, and the mounting shaft and the support platform are coaxially arranged, and the radial dimension of the support platform is smaller than the outer diameter dimension of the outer ring.

[0014] The beneficial effects of the present invention are:

[0015] A positioning portion is provided, and the installation shaft can position the inner ring and the outer ring, and can keep the inner ring and the outer ring in good coaxiality during the assembly process, thereby improving the assembly accuracy of the bearing and reducing the unqualified rate. The overall structure is simple, easy to assemble, and highly practical. A crimping portion is provided, and the inner ring can be axially installed into the outer ring, and can apply a force along its own axial direction to the inner ring to press the inner ring into the outer ring. The crimping portion enables the inner ring to be subjected to an axial force during the installation and pressing process, which can avoid damage caused by the force direction deviating from the axial direction, and is conducive to ensuring the assembly quality of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1An exploded schematic view of the bearing of one embodiment of the present application;

[0018] Figure 2 A schematic view of the overall structure of one embodiment of the present application;

[0019] Figure 3 An exploded schematic view of the crimping portion of one embodiment of the present application;

[0020] Figure 4 An exploded schematic view of the crimping portion of another embodiment of the present application;

[0021] Figure 5 A schematic view of the structure of the positioning portion of one embodiment of the present application.

[0022] In the drawings:

[0023] 10-bearing; 11-inner ring; 111-first inner hole; 12-outer ring; 121-second inner hole; 13-retainer;

[0024] 20-positioning portion; 21-mounting shaft; 22-base; 23-supporting table;

[0025] 30-crimping portion; 31-movable piece; 311-arc-shaped piece; 312-columnar piece; 313-axle hole; 32-base plate; 321-adjusting hole; 322-fixing hole; 33-adjusting piece; 34-fastening piece. DETAILED DESCRIPTION

[0026] The specific embodiments of the present application will be described in detail hereinafter with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the description of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0027] Unless otherwise explicitly specified and limited, the terms "arrange", "mount", "connect" and the like should be interpreted in a broad manner, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0028] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the utility model.

[0029] The terms "first," "second," "third," etc. are merely used to distinguish elements of similar nature and do not indicate or imply relative importance or a particular order.

[0030] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0031] Bearings are an important mechanical transmission component. The main function of bearings is to support mechanical rotating bodies to reduce their friction coefficient during movement and ensure the rotation accuracy of mechanical rotating bodies. The assembly of bearings has high precision requirements. If the axis of the assembled bearing deviates, it will cause errors in the mechanical transmission process, which can easily affect the mechanical life of the mechanical rotating body and the bearing itself. In severe cases, it may even cause stress damage to the mechanical rotating body.

[0032] Reference Figure 1 The bearing assembly device proposed in the present invention is used for assembling a bearing 10. The bearing 10 includes an inner ring 11, an outer ring 12 and a retainer 13. The inner ring 11 includes a first inner hole 111, and the outer ring 12 includes a second inner hole 121. The retainer 13 is arranged at the outermost side of the inner ring 11 in the radial direction. The inner ring 11 is installed in the second inner hole 121 through the retainer 13 and is coaxially connected to the outer ring 12 (axis L). The inner ring 11 can rotate axially relative to the outer ring 12 through the retainer 13.

[0033] Combine Figure 1 and Figure 2 The bearing assembly device proposed in the present invention is used for assembling the above-mentioned bearing 10, and includes a positioning portion 20 and a crimping portion 30. The positioning portion 20 includes a mounting shaft 21, and the mounting shaft 21 extends in the up-down direction. The inner ring 11 and the outer ring 12 of the bearing 10 are pre-set and are mounted on the mounting shaft 21 through the first inner hole 111. The mounting shaft 21 can realize the positioning of the inner ring 11 and the outer ring 12, so as to cooperate with the movable part 31 to assemble the inner ring 11 and the outer ring 12. Figure 3 The crimping portion 30 includes a movable member 31 , which is configured to be movable in the up-down direction to apply an axial force to the inner ring 11 so that the inner ring 11 is press-fitted into the second inner hole 121 of the outer ring 12 .

[0034] A positioning portion 20 is provided, and the installation shaft 21 can play a positioning role for the inner ring 11 and the outer ring 12, and can keep the inner ring 11 and the outer ring 12 in good coaxiality during the assembly process, thereby improving the assembly accuracy of the bearing 10 and reducing the unqualified rate. The overall structure is simple, easy to assemble, and highly practical; a crimping portion 30 is provided, which can axially install the inner ring 11 into the outer ring 12, and can apply a force along its own axial direction to the inner ring 11 to press the inner ring 11 into the outer ring. The crimping portion 30 enables the inner ring 11 to be subjected to an axial force during the installation and pressing process, which can avoid damage caused by the force direction deviating from the axial direction, and is beneficial to ensuring the assembly quality of the bearing 10.

[0035] When assembling the bearing 10, the lower end of the mounting shaft 21 can be fixed on the workbench, and the inner ring 11 and the outer ring 12 can be pre-installed together, so that the lower part of the inner ring 11 is installed in the second inner hole 121 of the outer ring 12 to achieve the fitting of the two, and then the inner ring 11 and the outer ring 12 are fitted on the mounting shaft 21 through the first inner hole 111, so that the lower end of the outer ring 12 contacts the workbench, so that the coaxial positioning of the inner ring 11 and the outer ring 12 can be achieved, and then the crimping part 30 is operated to press the inner ring 11 into the second inner hole 121 to complete the assembly.

[0036] In some working situations, the bearing 10 may be of non-standard size. The bearing assembly device of the present invention can be used for the assembly and pressing of non-standard bearings 10. The corresponding mounting shaft 21 and the crimping part 30 can be replaced according to the specifications and sizes of the bearing 10 to achieve coaxial fixation and assembly pressing of the inner ring 11 and the outer ring 12, and has good applicability.

[0037] As an optional embodiment, the radial dimension of the mounting shaft 21 is equal to or slightly smaller than the aperture dimension of the first inner hole 111 , so that the inner ring 11 and the outer ring 12 can have good coaxiality under the positioning action of the mounting shaft 21 .

[0038] As an optional embodiment, Figure 3 As shown, combined with Figure 2 The crimping portion 30 also includes a substrate 32 and an adjusting member 33. The substrate 32 is mounted on the upper end of the movable member 31 and is fixedly connected to the upper end of the movable member 31. The substrate 32 is movably connected to the upper end of the mounting shaft 21 through the adjusting member 33. The installation and position adjustment of the substrate 32 can be achieved through the mounting shaft 21. The distance between the substrate 32 and the mounting shaft 21 is adjustable, so that the movable member 31 can move up and down relative to the mounting shaft 21 together with the substrate 32 to apply axial force to the inner ring 11 to press the inner ring 11 tightly into the second inner hole 121.

[0039] In this embodiment example, the base plate 32 and the upper end of the movable part 31 are fixedly connected in a detachable manner. For example, they can be connected in a detachable manner such as screw connection or pin connection, so that the movable part 31 can be removed from the base plate 32 to facilitate subsequent maintenance and repair. Different movable parts 31 can also be replaced according to the specifications and models of the bearing 10 so that the movable part 31 can match the specifications of the inner ring 11.

[0040] In another example of this embodiment, the substrate 32 and the upper end of the movable member 31 are fixedly connected by welding, gluing or other non-detachable means.

[0041] In this embodiment, as an example, Figure 3 As shown, an adjustment hole 321 is provided on the base plate 32, and the adjustment hole 321 passes through the base plate 32 in the up and down directions. The position of the adjustment hole 321 corresponds to the position of the mounting shaft 21. The adjustment member 33 is provided in the adjustment hole 321 from top to bottom, and the lower end of the adjustment member 33 passes through the adjustment hole 321 and is connected to the upper end of the mounting shaft 21. A fastener 34 is sleeved on the adjustment member 33. The fastener 34 is located above the base plate 32 and is threadedly connected to the adjustment member 33. By rotating the fastener 34, the fastener 34 can move in the up and down directions and apply a force in the up and down directions to the base plate 32, so that the base plate 32 can move in the up and down directions, driving the movable member 31 to move up and down.

[0042] Illustratively, a mounting hole that cooperates with the adjusting member 33 is opened at the upper end of the mounting shaft 21 , and the lower end of the adjusting member 33 is passed through the mounting hole to be connected with the upper end of the mounting shaft 21 .

[0043] Exemplarily, the adjustment hole 321 is configured to have a smooth inner wall for passing the adjustment member 33, the mounting hole is configured to have a smooth inner wall and an interference fit with the adjustment member 33, or the mounting hole is configured as a screw hole to be connected to the adjustment member 33 by screwing.

[0044] For example, the number of adjusting members 33 can be adjusted according to the specifications of the bearing 10. When adjusting the fasteners 34, each fastener 34 can be adjusted the same number of times relative to the adjusting member 33 to ensure uniform force on the inner ring 11. In one possible scenario, multiple fasteners 34 can be simultaneously tightened using a jig to achieve synchronous adjustment of the fasteners 34 and ensure uniform force exerted by the movable member 31 on the inner ring 11. The jig can include unlocking sleeves that cooperate with the fasteners 34. Each unlocking sleeve can rotate about its own axis to achieve rotation of the fasteners 34.

[0045] Exemplarily, the number of the adjusting pieces 33 is set to one, the adjusting hole 321 is arranged at a position matched with the mounting shaft 21, and the axis of the adjusting hole 321 coincides with the axis of the mounting shaft 21. In this way, the position of the base plate 32 can be finely adjusted by cooperation of one adjusting piece 33 and one fastener 34, and the movable piece 31 can press the inner ring 11 to the second inner hole 121 without the need of adjusting or placing multiple adjusting pieces 33 in sequence in a jig, so that the force applied to the inner ring 11 can be uniform and stable.

[0046] When the fastener 34 is adjusted to be in contact with the upper end of the base plate 32 by thread cooperation relative to the adjusting piece 33, and the downward force can be applied to the base plate 32 by thread torque, the base plate 32 transmits the force to the arc-shaped piece 311, and the lower end of the arc-shaped piece 311 applies force to the inner ring 11 to press the inner ring 11 to the second inner hole 121.

[0047] When the assembly of the bearing 10 is completed, the fastener 34 is removed, the adjusting piece 33 is removed, the base plate 32 and the arc-shaped piece 311 are removed, and then the bearing 10 is removed from the mounting shaft 21.

[0048] As another alternative embodiment, refer to Figure 3 , and combine with Figure 4 The compression joint 30 includes the base plate 32 and the adjusting piece 33. The base plate 32 is fixedly connected with the upper end of the mounting shaft 21, and movably connected with the upper end of the movable piece 31 through the adjusting piece 33. The distance between the movable piece 31 and the base plate 32 is adjustable. The base plate 32 is installed through the mounting shaft 21. The adjusting piece 33 cooperates with the base plate 32 to enable the movable piece 31 to move in the up-down direction to apply axial force to the inner ring 11 to press the inner ring 11 to the second inner hole 121.

[0049] In this embodiment, refer to Figure 4 , and combine with Figure 3 The base plate 32 is provided with the adjusting hole 321. The adjusting hole 321 penetrates the base plate 32 in the up-down direction. The position of the adjusting hole 321 corresponds to the position of the movable piece 31. The adjusting piece 33 is arranged in the adjusting hole 321 from top to bottom, and the lower part of the adjusting piece 33 penetrates the adjusting hole 321 and is connected with the upper part of the movable piece 31. The adjusting piece 33 is configured to rotate around its own axis relative to the movable piece 31.

[0050] Exemplarily, the lower part of the adjusting piece 33 is connected with the upper part of the movable piece 31 through a bearing.

[0051] The adjusting member 33 is provided with a thread on the side wall in the radial direction, and the hole wall of the adjusting hole 321 is provided with a thread. The adjusting member 33 and the adjusting hole 321 are transmitted by thread. By rotating the adjusting member 33, the position of the adjusting member 33 relative to the substrate 32 can be changed in the up and down directions, so that the movable member 31 can move in the up and down directions and press the inner ring 11 into the second inner hole 121. Since the adjusting member 33 can rotate around its own axis relative to the upper end of the movable member 31, when the adjusting member 33 is rotated to change the position of the adjusting member 33 relative to the substrate 32, the movable member 31 will not rotate synchronously with the adjusting member 33 to cause interference.

[0052] In this embodiment, as an example, Figure 4 As shown, a fixing hole 322 is provided on the base plate 32, and the base plate 32 is fixedly connected to the upper end of the mounting shaft 21 through the fixing hole 322 in a detachable manner. For example, it can be connected in a detachable manner such as screw connection or pin connection. Accordingly, the fixing hole 322 is configured as a screw hole, a pin hole, etc., so as to facilitate the removal of the base plate 32 from the mounting shaft 21 to facilitate subsequent maintenance and repair.

[0053] As an optional embodiment, Figure 3 As shown, the movable part 31 includes at least one arc-shaped part 311, and the inner diameter size of the arc-shaped part 311 is matched with the aperture size of the first inner hole 111, that is, the inner diameter size of the arc-shaped part 311 is equal to or slightly larger than the aperture size of the first inner hole 111, and the inner wall of the arc-shaped part 311 (the side wall close to the installation shaft 21) is in contact with the side of the installation shaft 21 or has a certain gap. The setting of the arc-shaped part 311 can apply a downward pressing force to the upper end of the inner ring 11 as evenly as possible to ensure that the inner ring 11 can be crimped into the second inner hole 121 stably and efficiently, which is conducive to ensuring the installation quality of the inner ring 11.

[0054] In this embodiment, as a preferred method, the arc-shaped member 311 is configured so that its inner wall contacts the side of the mounting shaft 21. With this configuration, the mounting shaft 21 can guide the arc-shaped member 311. When the movable member 31 is moved in the up and down directions by the adjusting member 33, the arc-shaped member 311 is slidably fitted with the mounting shaft 21, which can ensure the stable movement of the arc-shaped member 311 and reduce shaking, thereby facilitating uniform force on the inner ring 11.

[0055] In this example, the arc-shaped member 311 is configured so that its lower end has as large a contact area with the upper end of the inner ring 11 as possible to ensure uniform force on the inner ring 11. As a preferred method, Figure 3 As shown, two arc-shaped members 311 are provided and symmetrically distributed on both sides of the mounting shaft 21 . This arrangement can increase the contact area between the arc-shaped member 311 and the inner ring 11 .

[0056] As a preferred embodiment, the central angle of the end face of the arc-shaped member 311 is 90°. When two arc-shaped members 311 are provided, uniform force can be applied to the inner ring 11 .

[0057] In another example of this embodiment, Figure 4 As shown, the movable part 31 includes a columnar part 312, and the columnar part 312 includes an axial hole 313. The axial hole 313 penetrates the columnar part 312 in the up and down directions, and the axial hole 313 cooperates with the mounting shaft 21. The columnar part 312 is sleeved on the mounting shaft 21 through the axial hole 313. The setting of the columnar part 312 can increase the contact area with the inner ring 11 as much as possible, which can ensure that the inner ring 11 is evenly stressed, and thus is conducive to ensuring the flatness of the bearing 10.

[0058] As an optional embodiment, Figure 5 As shown, the positioning portion 20 also includes a base 22, which is connected to the lower end of the mounting shaft 21. When the inner ring 11 and the outer ring 12 are mounted on the mounting shaft 21, the lower end of the outer ring 12 contacts the upper end of the base 22. The base 22 can support the outer ring 12 to cooperate with the mounting shaft 21 to achieve positioning of the inner ring 11 and the outer ring 12.

[0059] In this embodiment, in an example, the mounting shaft 21 can be installed on the base 22 by an interference fit, or the mounting shaft 21 can be installed on the base 22 by a screw connection. With this arrangement, different mounting shafts 21 can be replaced according to different specifications of the bearing 10. More specifically, different mounting shafts 21 can be replaced according to the aperture size of the first inner hole 111, which has good applicability.

[0060] In this embodiment, as an example, Figure 5 As shown, a support platform 23 is provided at the upper end of the base 22, the lower end of the mounting shaft 21 is connected to the upper end of the support platform 23, and the mounting shaft 21 and the support platform 23 are coaxially connected, and the radial dimension of the support platform 23 is configured to be smaller than or slightly smaller than the outer diameter of the outer ring 12. When the outer ring 12 and the inner ring 11 are mounted on the mounting shaft 21, the edge of the outer ring 12 protrudes from the support platform 23. When the assembly is completed, the bearing 10 can be easily removed from the mounting shaft 21.

[0061] In another example of this embodiment, Figure 5 As shown, a support platform 23 is provided at the upper end of the base 22, and the support platform 23 is detachably mounted on the mounting shaft 21, and the mounting shaft 21 is coaxially connected to the support platform 23. The radial dimension of the support platform 23 is configured to be smaller than or slightly smaller than the outer diameter of the outer ring 12. When the outer ring 12 is mounted on the mounting shaft 21 through the inner ring 11, the edge of the outer ring 12 protrudes from the support platform 23. When the assembly is completed, the bearing 10 can be easily removed from the mounting shaft 21. With this arrangement, different support platforms 23 can be replaced according to the specifications of the bearing 10.

[0062] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A bearing assembly device, characterized in that: The invention comprises a positioning portion (20) and a crimping portion (30), wherein the positioning portion (20) comprises a mounting shaft (21), wherein the mounting shaft (21) extends in the up-down direction, and the inner ring (11) and the outer ring (12) of the bearing (10) are mounted on the mounting shaft (21), and the crimping portion (30) comprises a movable part (31), wherein the movable part (31) is configured to be movable in the up-down direction so as to apply an axial force to the inner ring (11) so that the inner ring (11) is pressed into the outer ring (12).

2. The bearing assembly device according to claim 1, characterized in that: The crimping portion (30) further includes a base plate (32) and an adjusting member (33), wherein the base plate (32) is fixedly connected to the upper end of the movable member (31) and is movably connected to the upper end of the mounting shaft (21) via the adjusting member (33), and the distance between the base plate (32) and the mounting shaft (21) is adjustable, so that the movable member (31) can move up and down together with the base plate (32) to apply an axial force to the inner ring (11).

3. The bearing assembly device according to claim 2, characterized in that: An adjusting hole (321) is provided on the base plate (32), the lower end of the adjusting member (33) passes through the adjusting hole (321) and is connected to the upper end of the mounting shaft (21), a fastener (34) is sleeved on the adjusting member (33), the fastener (34) is located above the base plate (32) and is threadedly connected to the adjusting member (33), and by rotating the fastener (34), the base plate (32) can move in an up-down direction, thereby driving the movable member (31) to move up-down.

4. The bearing assembly device according to claim 3, characterized in that: The number of the adjustment hole (321) is one, and the axis of the adjustment hole (321) coincides with the axis of the installation shaft (21).

5. The bearing assembly device according to claim 1, characterized in that: The crimping portion (30) further includes a base plate (32) and an adjusting member (33), wherein the base plate (32) is fixedly connected to the upper end of the mounting shaft (21) and is connected to the upper end of the movable member (31) via the adjusting member (33), wherein the distance between the movable member (31) and the base plate (32) is adjustable, and the movable member (31) is capable of moving in an up-down direction to apply an axial force to the inner ring (11).

6. The bearing assembly device according to claim 5, characterized in that: An adjusting hole (321) is provided on the base plate (32), the adjusting member (33) is threadedly connected to the adjusting hole (321), and the lower portion thereof passes through the adjusting hole (321) and is connected to the upper portion of the movable member (31), the adjusting member (33) being capable of rotating about its own axis relative to the movable member (31), and by rotating the adjusting member (33), the movable member (31) is moved in the up and down directions.

7. The bearing assembly device according to claim 2 or 5, characterized in that: The movable part (31) includes at least one arc-shaped part (311), and the inner diameter of the arc-shaped part (311) matches the aperture of the first inner hole (111) of the inner ring (11), so that the inner wall of the arc-shaped part (311) contacts the side of the installation shaft (21) or has a gap.

8. The bearing assembly device according to claim 2 or 5, characterized in that: The movable part (31) includes a columnar part (312), the columnar part (312) includes an axial hole (313) that cooperates with the mounting shaft (21), the axial hole (313) passes through the columnar part (312) in the up-down direction, and the columnar part (312) is sleeved on the mounting shaft (21) through the axial hole (313).

9. The bearing assembly device according to claim 1, characterized in that: The positioning portion (20) further includes a base (22), wherein the base (22) is connected to the lower end of the mounting shaft (21), and when the inner ring (11) and the outer ring (12) are fitted onto the mounting shaft (21), the lower end of the outer ring (12) contacts the upper end of the base (22).

10. The bearing assembly device according to claim 9, characterized in that: A support platform (23) is provided at the upper end of the base (22), the lower end of the mounting shaft (21) is connected to the upper end of the support platform (23), and the mounting shaft (21) and the support platform (23) are coaxially arranged, and the radial dimension of the support platform (23) is smaller than the outer diameter dimension of the outer ring (12).

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