CN219960273U - Mounting structure for rear bearing of alternator - Google Patents
Mounting structure for rear bearing of alternator Download PDFInfo
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- CN219960273U CN219960273U CN202320993778.1U CN202320993778U CN219960273U CN 219960273 U CN219960273 U CN 219960273U CN 202320993778 U CN202320993778 U CN 202320993778U CN 219960273 U CN219960273 U CN 219960273U
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- bearing
- tolerance ring
- bearing chamber
- mounting structure
- positioning
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- 239000000843 powder Substances 0.000 claims description 42
- 238000007599 discharging Methods 0.000 claims description 28
- 238000009434 installation Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Motor Or Generator Frames (AREA)
Abstract
The utility model discloses a mounting structure, in particular a mounting structure for a rear bearing of an alternating-current generator, and belongs to the technical field of design and manufacture of electromechanical equipment. A mounting structure for a rear bearing of an alternator is provided which is convenient to assemble and can ensure the assembling quality. The mounting structure comprises a generator rear cover, a tolerance ring and a bearing, wherein a bearing chamber is arranged on the generator rear cover, the mounting structure further comprises a mounting positioning anti-slip mechanism, the tolerance ring is provided with an open port, and the bearing arranged in the tolerance ring under the matching of the open port is mounted in the bearing chamber under the matching of the mounting positioning anti-slip mechanism through the tolerance ring.
Description
Technical Field
The utility model relates to a mounting structure, in particular to a mounting structure for a rear bearing of an alternating-current generator, and belongs to the technical field of design and manufacture of electromechanical equipment.
Background
The anti-slip measure of the rolling bearing of the rear cover of the existing generator is that the bearing chamber of the rear cover is heated before the rear cover is pressed by the rubber ring of the outer ring of the rolling bearing. The bearing rubber ring is heated and expanded to lock the outside of the bearing, so that the anti-skid effect is achieved. However, the requirements on the precision of the rear end bearing chamber are very high, the actual production cannot be guaranteed in percentage, the bearing is caused to slip, and the rolling bearing is complex in process and high in cost. The other is a sealed tolerance ring with a carbon brush powder clamping groove, the back cover of the tolerance ring is difficult to press, the risk of damaging a rotor bearing exists in the press mounting process, and the problems of complex injection molding process and high cost exist.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: a mounting structure for a rear bearing of an alternator is provided which is convenient to assemble and can ensure the assembling quality.
The technical scheme adopted for solving the technical problems is as follows: a mounting structure for a rear bearing of an alternator comprises a rear cover of the alternator, a tolerance ring and a bearing, wherein a bearing chamber is arranged on the rear cover of the alternator, the mounting structure further comprises a mounting positioning anti-slip mechanism, the tolerance ring is provided with an open port, and the bearing arranged in the tolerance ring under the matching of the open port is mounted in the bearing chamber under the matching of the mounting positioning anti-slip mechanism through the tolerance ring.
Further, the installation positioning anti-slip mechanism comprises a positioning boss and a positioning clamping groove, the positioning boss is arranged on one side, close to the opening, of the outer side wall of the tolerance ring, the positioning clamping groove is arranged on the inner side wall of the bearing chamber in a position matched with the positioning boss, and the tolerance ring in place is positioned and anti-slip through the positioning boss and the positioning clamping groove which are mutually matched.
In a preferred mode of the above scheme, the tolerance ring is in clearance fit with the bearing chamber, and the tolerance ring is made of PBT material.
Further, a limit boss is further disposed at an outer edge of the open side of the tolerance ring, a limit groove adapted to the limit boss is disposed at a corresponding position of the bearing chamber, and the tolerance ring is mounted in the bearing chamber under the cooperation of the limit boss and the limit groove.
The preferable mode of the scheme is that the installation structure further comprises a dust discharging mechanism, and working dust in the bearing chamber is discharged out of the bearing chamber through the dust discharging mechanism.
Further, the powder discharging mechanism comprises a tolerance ring powder discharging port and a bearing chamber powder discharging port, and the tolerance ring powder discharging port and the bearing chamber powder discharging port are respectively arranged on the tolerance ring and the bearing chamber in a position-adaptive mode.
In the above scheme, the powder discharge port of the bearing chamber is arranged at the root of the bearing chamber, and the powder discharge port of the tolerance ring is arranged at the root of the tolerance ring.
Further, the arrangement position of the powder discharge port of the bearing chamber on the bearing chamber and the arrangement position of the positioning clamping groove for installing the positioning anti-skid mechanism on the bearing chamber form an included angle of 180 degrees.
The beneficial effects of the utility model are as follows: the technical scheme provided by the utility model is based on the existing generator rear cover, tolerance ring and bearing, and combines the structural characteristics that a bearing chamber is arranged on the generator rear cover, a new installation structure is formed by additionally arranging an installation positioning anti-slip mechanism, then an open port is arranged on the tolerance ring, and the bearing arranged in the tolerance ring under the coordination of the open port is installed in the bearing chamber under the coordination of the installation positioning anti-slip mechanism through the tolerance ring. Therefore, the mounting structure changes the actual situation that the bearing chamber of the end cover is required to be heated to be filled, or the sealing tolerance ring with the carbon brush powder clamping groove is required to be pressed into the bearing chamber, and by adopting the mounting structure, the generator rear cover, the tolerance ring and the bearing in the existing structure are fully utilized, and meanwhile, the additionally arranged mounting and positioning anti-slip mechanism ensures the convenience of mounting and the prevention of slipping, so that the convenience of assembly is improved, and the quality of assembly is ensured.
Drawings
Fig. 1 is a schematic exploded view of a mounting structure for a rear bearing of an alternator according to the present utility model.
Marked in the figure as: the power generator comprises a generator rear cover 1, a tolerance ring 2, a bearing 3, a bearing chamber 4, an installation positioning anti-slip mechanism 5, a port 6, a positioning boss 7, a positioning clamping groove 8, a limiting boss 9, a limiting groove 10, a powder discharging mechanism 11, a tolerance ring powder discharging port 12 and a bearing chamber powder discharging port 13.
Detailed Description
The utility model provides a mounting structure for a rear bearing of an alternator, which is convenient to assemble and can ensure the assembly quality, as shown in fig. 1. The mounting structure comprises a generator rear cover 1, a tolerance ring 2 and a bearing 3, wherein a bearing chamber 4 is arranged on the generator rear cover 1, the mounting structure further comprises a mounting positioning anti-slip mechanism 5, the tolerance ring 2 is provided with an open port 6, and the bearing 3 arranged in the tolerance ring 2 under the fit of the open port is mounted in the bearing chamber 4 through the tolerance ring 2 under the fit of the mounting positioning anti-slip mechanism 5. The technical scheme provided by the utility model is based on the existing generator rear cover, tolerance ring and bearing, and combines the structural characteristics that a bearing chamber is arranged on the generator rear cover, a new installation structure is formed by additionally arranging an installation positioning anti-slip mechanism, then an open port is arranged on the tolerance ring, and the bearing arranged in the tolerance ring under the coordination of the open port is installed in the bearing chamber under the coordination of the installation positioning anti-slip mechanism through the tolerance ring. Therefore, the mounting structure changes the actual situation that the bearing chamber of the end cover is required to be heated to be filled, or the sealing tolerance ring with the carbon brush powder clamping groove is required to be pressed into the bearing chamber, and by adopting the mounting structure, the generator rear cover, the tolerance ring and the bearing in the existing structure are fully utilized, and meanwhile, the additionally arranged mounting and positioning anti-slip mechanism ensures the convenience of mounting and the prevention of slipping, so that the convenience of assembly is improved, and the quality of assembly is ensured.
Correspondingly, in order to improve convenience and reliability of assembly operation to the greatest extent before not increasing a great amount of parts by combining the characteristics of the existing mounting structure, the mounting positioning anti-slip mechanism 5 comprises a positioning boss 7 and a positioning clamping groove 8, wherein the positioning boss 7 is arranged on one side of the outer side wall of the tolerance ring 2 close to an opening, the positioning clamping groove 8 is arranged on the inner side wall of the bearing chamber 4 in a position adapting to the positioning boss 7, and the tolerance ring 2 in place is positioned and anti-slip through the positioning boss 7 and the positioning clamping groove 8 which are mutually adapting. At this time, the assembly gap between the tolerance ring 2 and the bearing chamber 4 can be changed into clearance fit, and the tolerance ring is made of PBT material. Correspondingly, in order to improve the anti-skid performance, the utility model is also provided with a limit boss 9 at the outer edge of the open side of the tolerance ring 2, a limit groove 10 which is matched with the limit boss 9 is arranged at the corresponding position of the bearing chamber 4, and the tolerance ring 2 is arranged in the bearing chamber 4 under the cooperation of the limit boss 9 and the limit groove 10.
Furthermore, in order to avoid that a great amount of carbon brush powder generated during operation is accumulated in the bearing chamber to influence the bearing operation, the installation structure of the utility model further comprises a powder discharging mechanism 11, and the working dust in the bearing chamber 4 is discharged out of the bearing chamber 4 through the powder discharging mechanism 11. At this time, the powder discharging mechanism 11 comprises a tolerance ring powder discharging port 12 and a bearing chamber powder discharging port 13, and the tolerance ring powder discharging port 12 and the bearing chamber powder discharging port 13 are respectively arranged on the tolerance ring 2 and the bearing chamber 4 in a position-adaptive manner. According to the mounting structure of the utility model, the bearing chamber powder discharge port 13 is arranged at the root of the bearing chamber 4, and the tolerance ring powder discharge port 12 is arranged at the root of the tolerance ring 2. In order to improve the powder discharging effect and the strength of an assembly structure, particularly a tolerance ring, the arrangement position of the powder discharging port 13 of the bearing chamber on the bearing chamber 4 and the arrangement position of the positioning clamping groove 8 for installing the positioning anti-slip mechanism 5 on the bearing chamber 4 form an included angle of 180 degrees.
In view of the above, assembling the rear bearing of the alternator using the mounting structure of the present utility model also has the following advantages,
the bearing tolerance ring is changed into an open structure from a sealing structure, the problem of ventilation and heat dissipation of the bearing can be well solved, and the carbon powder accumulated on the bearing can be discharged by adding the powder discharging notch at the bottom of the tolerance ring. The fit size of the bearing is changed from excessive fit to clearance fit, so that the rear end cover can be conveniently put in during press fitting, the assembly efficiency is improved, and the bearing is not damaged. The tolerance ring made of the PBT material is changed from PA66 to PBT, so that the tolerance ring made of the PBT material is easier to expand when being heated during the operation of the motor, and the tolerance ring has better fit with the bearing, thereby increasing the firmness between the bearing and the tolerance ring and preventing the bearing from slipping. The tolerance ring outer ring is provided with a positioning boss, the bearing chamber of the rear end cover is provided with a positioning clamping groove, and the root of the bottom is provided with a powder discharge notch, so that the carbon powder flowing into the bearing chamber can be discharged in a directional manner.
The technical scheme of the utility model is further described by the following specific examples:
the technical scheme adopted for solving the technical problems is as follows: changing the sealing structure of the bearing tolerance ring into an open structure, and adding a powder discharge notch at the root; changing the fit size of the bearing from excessive fit to clearance fit; PBT for changing the tolerance ring material from PA 66; the tolerance ring outer ring is provided with a positioning boss, the position of the positioning boss forms an angle of 180 degrees with the root clamping groove, the bearing chamber of the rear end cover is provided with a positioning clamping groove, the root of the bottom is provided with a powder discharging notch, and the position of the notch forms an angle of 180 degrees with the position of the clamping groove.
Example 1
1. The design mainly comprises a rear end cover bearing chamber, a bearing tolerance ring and a rolling bearing;
2. according to the design and constitution of the sequence 1, the bearing tolerance ring is arranged in the bearing chamber of the rear end cover, the bearing chamber tolerance ring positioning boss is aligned with the bearing chamber positioning clamping groove, the bearing chamber limiting surface is attached to the tolerance ring boss limiting surface, then the rolling bearing is arranged, and the plastic tolerance ring is heated and expanded when the motor operates, so that the rolling bearing cannot slide relative to the bearing chamber due to deformation;
3. according to the requirements of the sequences 1 and 2, the midpoints of the rear end bearing chamber, the bearing tolerance ring and the rolling bearing are positioned on the same center line, the bearing tolerance ring positioning boss and the bearing tolerance ring powder discharge slot form an angle of 180 degrees, the bearing chamber positioning clamping groove and the bearing chamber powder discharge slot form an angle of 180 degrees, and the bearing tolerance ring and the rolling bearing are in clearance fit;
4. the bearing tolerance ring is made of PBT plastic through die casting.
Claims (8)
1. A mounting structure for alternator rear bearing, including generator rear cover (1), tolerance ring (2) and bearing (3) generator rear cover (1) on be provided with bearing housing (4), its characterized in that: the mounting structure further comprises a mounting positioning anti-slip mechanism (5), the tolerance ring (2) is provided with an open port (6), and the bearing (3) arranged in the tolerance ring (2) under the cooperation of the open port is mounted in the bearing chamber (4) through the tolerance ring (2) under the cooperation of the mounting positioning anti-slip mechanism (5).
2. The mounting structure for an alternator rear bearing as in claim 1, wherein: the mounting positioning anti-slip mechanism (5) comprises a positioning boss (7) and a positioning clamping groove (8), wherein the positioning boss (7) is arranged on one side, close to an opening, of the outer side wall of the tolerance ring (2), the positioning clamping groove (8) is arranged on the inner side wall of the bearing chamber (4) in a position matching with the positioning boss (7), and the tolerance ring (2) in place is positioned and anti-slip through the positioning boss (7) and the positioning clamping groove (8) which are mutually matched.
3. The mounting structure for an alternator rear bearing as in claim 2, wherein: the tolerance ring (2) is in clearance fit with the bearing chamber (4), and is made of PBT material.
4. A mounting structure for an alternator rear bearing as in claim 1, 2 or 3, characterized in that: the outer edge of the open side of the tolerance ring (2) is also provided with a limit boss (9), a limit groove (10) which is matched with the limit boss (9) is arranged at the corresponding position of the bearing chamber (4), and the tolerance ring (2) is arranged in the bearing chamber (4) under the cooperation of the limit boss (9) and the limit groove (10).
5. The mounting structure for an alternator rear bearing as in claim 4, wherein: the installation structure further comprises a powder discharging mechanism (11), and working dust in the bearing chamber (4) is discharged out of the bearing chamber (4) through the powder discharging mechanism (11).
6. The mounting structure for an alternator rear bearing as in claim 5, wherein: the powder discharging mechanism (11) comprises a tolerance ring powder discharging port (12) and a bearing chamber powder discharging port (13), and the tolerance ring powder discharging port (12) and the bearing chamber powder discharging port (13) are arranged on the tolerance ring (2) and the bearing chamber (4) in a position matching mode respectively.
7. The mounting structure for an alternator rear bearing as in claim 6, wherein: the bearing chamber powder discharge port (13) is arranged at the root of the bearing chamber (4), and the tolerance ring powder discharge port (12) is arranged at the root of the tolerance ring (2).
8. The mounting structure for an alternator rear bearing as in claim 7, wherein: the arrangement position of the bearing chamber powder discharge port (13) on the bearing chamber (4) forms an included angle of 180 degrees with the arrangement position of the positioning clamping groove (8) for installing the positioning anti-skid mechanism (5) on the bearing chamber (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320993778.1U CN219960273U (en) | 2023-04-27 | 2023-04-27 | Mounting structure for rear bearing of alternator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320993778.1U CN219960273U (en) | 2023-04-27 | 2023-04-27 | Mounting structure for rear bearing of alternator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219960273U true CN219960273U (en) | 2023-11-03 |
Family
ID=88542620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320993778.1U Active CN219960273U (en) | 2023-04-27 | 2023-04-27 | Mounting structure for rear bearing of alternator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219960273U (en) |
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2023
- 2023-04-27 CN CN202320993778.1U patent/CN219960273U/en active Active
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