CN213661317U - Can overcome assembly error's lubricated waste grease discharge structure of electric motor rotor support bearing - Google Patents
Can overcome assembly error's lubricated waste grease discharge structure of electric motor rotor support bearing Download PDFInfo
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- CN213661317U CN213661317U CN202021987797.6U CN202021987797U CN213661317U CN 213661317 U CN213661317 U CN 213661317U CN 202021987797 U CN202021987797 U CN 202021987797U CN 213661317 U CN213661317 U CN 213661317U
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Abstract
The invention discloses a motor rotor supporting bearing lubricating waste grease discharging structure capable of overcoming assembly errors, and solves the problem that the normal work of a bearing is affected due to the fact that an annular gap for discharging waste grease is too large or too small caused by the assembly errors of a motor in an existing cylindrical roller bearing. The bearing outer ring (3) of the motor rotor supporting bearing is fixedly arranged in a motor rotor supporting bearing seat (2), a bearing inner ring (9) of the motor rotor supporting bearing is sleeved on a motor rotating shaft (6) in a hot mode, an oil slinger (7) is sleeved on the motor rotating shaft (6) on the outer side of the bearing inner ring (9) in a hot mode, a bearing outer cover (5) is arranged on the outer side face of the motor rotor supporting bearing seat (2), an oil slinger (4) is arranged between the bearing outer cover (5) and the bearing outer ring (3), and a radial annular gap (8) is formed between the oil slinger and the oil slinger. The normal work of lubricating grease in the motor operation has been guaranteed, the excessive loss of lubricating grease in the bearing has been avoided.
Description
Technical Field
The invention relates to a motor rotor supporting bearing, in particular to a lubricating waste grease discharging structure in the motor rotor supporting bearing, which can effectively overcome assembly errors.
Background
The high-voltage three-phase asynchronous motor is a mainstream machine type in the field of industrial dragging, because the power is larger, a cylindrical roller bearing is generally selected as a support bearing of a motor rotor at a shaft extension end, a roller of the bearing is cylindrical, inner and outer ring raceways of the bearing are cylindrical, an oil slinger is sleeved on a motor rotating shaft at the outer side of the cylindrical roller bearing in a hot way, an oil slinger is arranged on a bearing outer ring at the outer side of the oil slinger, the oil slinger is axially positioned on the motor rotating shaft and is axially positioned according to the bearing outer ring, the prior art determines the positions of the oil slinger and the oil slinger according to the axial positioning, an annular gap which is staggered in the axial direction is formed between the oil slinger and the oil slinger so as to normally discharge lubricating waste grease in the bearing, because the motor has assembly error in the assembly process, the assembly reference of the oil slinger is the motor rotating shaft, and the assembly reference of, the width of an annular gap for discharging waste oil and fat cannot meet the design requirement often caused by assembly errors of a field motor, and the problems that the annular gap is too large, or the annular gap is too small or even closed exist in the field after the motor is assembled; when the annular gap is too large, lubricating grease in the bearing chamber rotates along with the oil slinger, and excessive grease is thrown out through the annular channel, so that the grease in the bearing is in short supply, and the grease discharged by the roller cannot timely replenish the cavity when the motor runs, so that the bearing is easily burnt; when the annular gap is too small, waste grease in the bearing cannot be discharged normally, and the normal use of the bearing is influenced; in addition, some motors are only provided with oil slingers instead of oil slingers, so that the oil slingers are large in diameter and are sleeved on the motor rotating shafts and rotate along with the motor rotating shafts, the linear speed of the excircle of each oil slinger is large, large noise can be generated during operation of the motors, and meanwhile, the phenomenon that lubricating grease in the bearings is thrown out too fast and shortage of the lubricating grease occurs is accelerated.
Disclosure of Invention
The invention provides a motor rotor supporting bearing lubricating waste grease discharging structure capable of overcoming assembly errors, and solves the technical problem that the normal work of a bearing is influenced because an annular gap for discharging waste grease is too large or too small due to the assembly errors of a motor in the conventional cylindrical roller bearing.
The invention solves the technical problems by the following technical scheme:
the general concept of the invention is: the oil slinger and the oil slinger in the traditional structure for discharging the lubricating waste grease of the motor rotor support bearing are changed, the design method for forming the annular gap for discharging the waste grease is designed by taking axial positioning as the reference, and the annular gap for discharging the waste grease is designed by taking radial positioning as the reference, so that the distance between the annular gaps is basically not influenced by the installation error of a motor, the fault tolerance of the axial installation of the oil slinger and the oil slinger is greatly improved, the normal operation of a support bearing lubricating grease system is ensured, and the burning loss of the bearing is avoided.
A lubricating waste grease discharging structure of a motor rotor supporting bearing capable of overcoming assembly errors comprises a motor driving end cover and a motor rotating shaft, a motor rotor supporting bearing seat is arranged on the central hole of the motor driving end cover, a motor rotor supporting bearing is arranged in the motor rotor supporting bearing seat, a motor rotating shaft is arranged in the motor rotor supporting bearing, a bearing outer ring of the motor rotor supporting bearing is fixedly arranged in a bearing seat of the motor rotor supporting bearing, a bearing inner ring of the motor rotor supporting bearing is sleeved on the motor rotating shaft in a hot manner, a roller is arranged between the bearing inner ring and the bearing outer ring, an oil slinger is sleeved on the motor rotating shaft at the outer side of the bearing inner ring in a hot mode, the outer side surface of the motor rotor supporting bearing pedestal is provided with a bearing outer cover, an oil slinger is arranged between the bearing outer cover and the bearing outer ring, and a radial annular gap is arranged between the oil slinger and the oil slinger.
The inner side surface of the oil retainer ring is provided with an oil retaining alicyclic groove surface.
A motor rotor support bearing lubricating waste grease discharge structure capable of overcoming assembly errors is characterized by being assembled according to the following method:
firstly, mounting a motor rotor supporting bearing on a motor rotating shaft, and sleeving a bearing inner ring on the motor rotating shaft in a hot manner according to an axial positioning position on the motor rotating shaft;
secondly, hot sleeving an oil slinger on a motor rotating shaft on the outer side of a bearing inner ring;
thirdly, connecting and mounting a motor rotor supporting bearing seat on a motor rotor supporting bearing with a motor driving end cover;
fourthly, sleeving an oil retaining ring on a motor rotating shaft to enable the inner side surface of the oil retaining ring to be abutted to the outer side vertical surface of the bearing outer ring;
and fifthly, sleeving the bearing outer cover on the motor rotating shaft, so that the oil slinger is clamped between the inner side surface of the bearing outer cover and the outer side vertical surface of the bearing outer ring, and a radial annular gap is formed between the oil slinger and the oil slinger.
The invention greatly reduces the installation difficulty of the lubricating oil slinger and the oil deflector ring of the motor rotor support bearing, avoids the influence of axial errors in motor installation on the width of the annular gap for normally discharging waste oil and grease formed by installation, ensures the normal work of the lubricating grease in the operation of the motor, avoids the excessive loss of the lubricating grease in the bearing and prolongs the service life of the motor bearing.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
a lubricating waste grease discharging structure of a motor rotor supporting bearing capable of overcoming assembly errors comprises a motor driving end cover 1 and a motor rotating shaft 6, a motor rotor supporting bearing seat 2 is arranged on a central hole of the motor driving end cover 1, a motor rotor supporting bearing is arranged in the motor rotor supporting bearing seat 2, the motor rotating shaft 6 is arranged in the motor rotor supporting bearing, a bearing outer ring 3 of the motor rotor supporting bearing is fixedly arranged in the motor rotor supporting bearing seat 2, a bearing inner ring 9 of the motor rotor supporting bearing is sleeved on the motor rotating shaft 6 in a hot mode, a roller 10 is arranged between the bearing inner ring 9 and the bearing outer ring 3, an oil slinger 7 is sleeved on the motor rotating shaft 6 outside the bearing inner ring 9 in a hot mode, a bearing outer cover 5 is arranged on the outer side face of the motor rotor supporting bearing seat 2, and an oil baffle ring 4 is arranged between the bearing outer cover 5 and the bearing outer ring 3, a radial annular gap 8 is provided between the slinger 4 and the slinger 7.
The inner side face of the oil slinger 4 is provided with an oil slinger annular groove face 11, when the motor rotating shaft 6 rotates, lubricating grease in the bearing is thrown outwards along with the rotation of the oil slinger 7, most of the thrown lubricating grease is blocked by the oil slinger annular groove face 11 arranged on the inner side face of the oil slinger 4 and returns to the bearing again, and the loss of the lubricating grease is avoided.
A motor rotor support bearing lubricating waste grease discharge structure capable of overcoming assembly errors is characterized by being assembled according to the following method:
firstly, mounting a motor rotor supporting bearing on a motor rotating shaft 6, and sleeving a bearing inner ring 9 on the motor rotating shaft 6 in a hot manner according to an axial positioning position on the motor rotating shaft 6;
secondly, hot sleeving an oil slinger 7 on the motor rotating shaft 6 outside the bearing inner ring 9, wherein the installation position of the oil slinger 7 is determined according to the positioning of the oil slinger on the motor rotating shaft 6;
thirdly, connecting and installing a motor rotor supporting bearing seat 2 on a motor rotor supporting bearing with a motor driving end cover 1, wherein the installation and the positioning of the motor driving end cover 1 take a motor base as a positioning reference, so that the axial positioning of a bearing outer ring 3 also takes the motor base as the positioning reference;
fourthly, sleeving the oil slinger 4 on the motor rotating shaft 6, enabling the inner side face of the oil slinger 4 to be abutted to the outer side vertical face of the bearing outer ring 3, and enabling the positioning reference of the oil slinger 4 to be also based on the motor base as the positioning reference;
fifthly, sleeving the bearing outer cover 5 on the motor rotating shaft 6, so that the oil slinger 4 is clamped between the inner side surface of the bearing outer cover 5 and the outer side vertical surface of the bearing outer ring 3, and a radial annular gap 8 is formed between the oil slinger 4 and the oil slinger 7; because the oil slinger 7 is positioned by taking the motor rotating shaft 6 as a reference and the oil slinger 4 is positioned by taking the motor base as a positioning reference, the axial dislocation is easily formed between the oil slinger 7 and the oil slinger 4 in the installation process, but because the radial annular gap 8 formed between the oil slinger 4 and the oil slinger 7 is in the radial direction, the dislocation basically does not influence the radial gap between the oil slinger 4 and the oil slinger 7, so that the width of the oil slinger is basically kept within the design range; in addition, the structure of the invention reduces the outer diameter of the oil slinger 7, reduces the centrifugal force of oil slinging, and simultaneously reduces the noise generated in the operation of the oil slinger.
Claims (3)
1. A lubricating waste grease discharging structure of a motor rotor supporting bearing capable of overcoming assembly errors comprises a motor driving end cover (1) and a motor rotating shaft (6), a motor rotor supporting bearing seat (2) is arranged on a central hole of the motor driving end cover (1), a motor rotor supporting bearing is arranged in the motor rotor supporting bearing seat (2), the motor rotating shaft (6) is arranged in the motor rotor supporting bearing, a bearing outer ring (3) of the motor rotor supporting bearing is fixedly arranged in the motor rotor supporting bearing seat (2), a bearing inner ring (9) of the motor rotor supporting bearing is sleeved on the motor rotating shaft (6) in a hot mode, a roller (10) is arranged between the bearing inner ring (9) and the bearing outer ring (3), and the lubricating waste grease discharging structure is characterized in that an oil slinger (7) is sleeved on the motor rotating shaft (6) on the outer side of the bearing inner ring (9) in a hot mode, a bearing outer cover (5) is arranged on the outer side face of a motor rotor supporting bearing seat (2), an oil slinger (4) is arranged between the bearing outer cover (5) and a bearing outer ring (3), and a radial annular gap (8) is arranged between the oil slinger (4) and the oil slinger (7).
2. The structure for discharging lubrication waste grease of a rotor support bearing of an electric motor capable of overcoming assembly errors as set forth in claim 1, wherein a grease-retaining annular recessed surface (11) is provided on an inner side surface of the oil slinger (4).
3. The structure for discharging the grease used for the lubrication of the supporting bearing of the rotor of the motor, which can overcome the assembly error, according to claim 2, is assembled by the following method:
firstly, mounting a motor rotor supporting bearing on a motor rotating shaft (6) to enable a bearing inner ring (9) to be sleeved on the motor rotating shaft (6) in a hot mode according to an axial positioning position on the motor rotating shaft (6);
secondly, sleeving an oil slinger (7) on a motor rotating shaft (6) outside a bearing inner ring (9) in a hot manner;
thirdly, connecting and mounting a motor rotor supporting bearing seat (2) on a motor rotor supporting bearing with a motor driving end cover (1);
fourthly, the oil slinger (4) is sleeved on the motor rotating shaft (6), so that the inner side surface of the oil slinger (4) is abutted to the outer side vertical surface of the bearing outer ring (3);
and fifthly, sleeving the bearing outer cover (5) on the motor rotating shaft (6) in a sleeved mode, enabling the oil slinger (4) to be clamped between the inner side face of the bearing outer cover (5) and the outer side vertical face of the bearing outer ring (3), and forming a radial annular gap (8) between the oil slinger (4) and the oil slinger (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021987797.6U CN213661317U (en) | 2020-09-12 | 2020-09-12 | Can overcome assembly error's lubricated waste grease discharge structure of electric motor rotor support bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021987797.6U CN213661317U (en) | 2020-09-12 | 2020-09-12 | Can overcome assembly error's lubricated waste grease discharge structure of electric motor rotor support bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213661317U true CN213661317U (en) | 2021-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021987797.6U Active CN213661317U (en) | 2020-09-12 | 2020-09-12 | Can overcome assembly error's lubricated waste grease discharge structure of electric motor rotor support bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213661317U (en) |
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2020
- 2020-09-12 CN CN202021987797.6U patent/CN213661317U/en active Active
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