CN111446801A - Motor shaft extension sealing structure and motor - Google Patents
Motor shaft extension sealing structure and motor Download PDFInfo
- Publication number
- CN111446801A CN111446801A CN202010326909.1A CN202010326909A CN111446801A CN 111446801 A CN111446801 A CN 111446801A CN 202010326909 A CN202010326909 A CN 202010326909A CN 111446801 A CN111446801 A CN 111446801A
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- motor
- end cover
- rotating shaft
- channel
- sealing ring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
The invention provides a motor shaft extension sealing structure which comprises a motor end cover, a motor rotating shaft, a ball bearing and a sealing ring, wherein the motor end cover is provided with a sealing ring; the motor rotating shaft is arranged in the motor end cover through a ball bearing; the sealing ring is fixedly sleeved on the motor rotating shaft, and a gap channel for lubricating grease to pass through is formed between the sealing ring and the motor end cover; the sealing ring can be driven by the motor rotating shaft to synchronously rotate and relatively rotate with the end cover; an oil inlet channel and an oil outlet channel are arranged in the motor end cover, the oil inlet channel is communicated with the inlet end of the gap channel through a ball bearing, and the oil outlet channel is communicated with the outlet end of the gap channel. The motor shaft extension sealing structure can ensure the lubrication of the bearing, can fill a zigzag gap channel through lubricating grease, ensures the sealing property between a motor rotating shaft and a motor end cover, and reduces mechanical loss. Correspondingly, the invention further provides the motor.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a motor shaft extension sealing structure and a motor.
Background
Reducing the friction loss of the motor is an effective method for improving the efficiency. At present, the protection level of a common high-efficiency motor is required to be IP55 or above, and a framework oil seal or a water slinger is sleeved at the outer end of a motor rotating shaft in a motor shaft extension sealing method, as shown in figure 5. Although the framework oil seal can play a role in water and dust prevention, the friction resistance is increased when the shaft rotates due to the interference installation, the mechanical consumption of the motor is increased, the temperature rise of the bearing is improved, and the protection requirement cannot be effectively met when the motor is static due to the fact that the mechanical consumption is not increased by using the water slinger for protection. Therefore, there is a need to develop a shaft extension sealing structure of a motor with simple structure and small mechanical loss to improve the working efficiency of the motor.
It has been found through search that some typical prior arts, as shown in fig. 6, the patent application No. 201810252881.4 discloses a sealing structure of a shaft extension end of a motor, which can prolong the service life and sealing reliability of an oil seal. As shown in fig. 7, the patent with application number 201810988648.2 discloses a motor shaft extension sealing structure, which realizes a high sealing protection level for a thin-wall end cover and improves the sealing effect. As shown in fig. 8, the patent application No. 201710436299.9 discloses a generator bearing sealing device, which achieves the effects of reducing the volume and structural complexity of the sealing device and improving the durability of the sealing device.
Therefore, for the shaft extension sealing structure of the motor, many practical problems to be dealt with in practical application (such as simplifying the structure, reducing mechanical loss and the like) exist, and no specific solution is provided.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a motor shaft extension sealing structure and a motor, and the specific technical scheme is as follows:
a motor shaft extension sealing structure comprises a motor end cover, a motor rotating shaft, a ball bearing and a sealing ring;
the motor rotating shaft is arranged in the motor end cover through a ball bearing;
the sealing ring is fixedly sleeved on the motor rotating shaft, and a gap channel for lubricating grease to pass through is formed between the sealing ring and the motor end cover;
the sealing ring can be driven by the motor rotating shaft to synchronously rotate and relatively rotate with the end cover;
an oil inlet channel and an oil outlet channel are arranged in the motor end cover, the oil inlet channel is communicated with the inlet end of the gap channel through a ball bearing, and the oil outlet channel is communicated with the outlet end of the gap channel.
The sealing ring is arranged between the motor end cover and the bearing, one end of the sealing ring is fixed on the motor rotating shaft, one side of the sealing ring is abutted against the inner ring of the ball bearing, and the lubricating oil flows into the bearing through the oil inlet channel, then flows into a gap channel between the sealing ring and the motor end cover through the bearing and finally flows out of the oil outlet channel. The lubricating grease of the bearing is utilized for sealing, so that the lubrication of the bearing can be ensured, the tortuous gap channel can be filled with the lubricating grease, the sealing performance between the motor rotating shaft and the motor end cover is ensured, and the mechanical loss is reduced. When the motor is installed, the ball bearing and the sealing ring can be heated at the same time, and then the rotating shaft of the motor is sleeved in the ball bearing and the sealing ring, so that the installation is simple.
Optionally, the slit passage is arranged in a zigzag manner, and is in a labyrinth type, and the gap distance of the slit passage is between 0.5 and 1.0 mm.
Optionally, the motor shaft extension sealing structure further includes a bearing sealing cover, the bearing sealing cover is fixedly disposed on the motor end cover, and a first channel is formed between the bearing sealing cover and the ball bearing and between the bearing sealing cover and the motor end cover.
Optionally, the surface of one side of the bearing sealing cover, which is in contact with the rotating shaft of the motor, is provided with a plurality of annular first oil storage channels.
Optionally, a plurality of annular second oil storage channels are arranged on the surface of one side, in contact with the motor rotating shaft, of the motor end cover.
Optionally, the bearing cover is fixed on the motor end cover through a bolt.
Optionally, the sealing ring is in interference fit with the motor rotating shaft.
Correspondingly, the invention also provides a motor which comprises the motor shaft extension sealing structure.
The beneficial effects obtained by the invention comprise:
1. lubricating grease of the bearing is used for sealing, so that the lubrication of the bearing can be ensured, the tortuous gap channel can be filled with the lubricating grease, the sealing performance between the motor rotating shaft and the motor end cover is ensured, and the mechanical loss is reduced;
2. when the motor is installed, the ball bearing and the sealing ring can be heated at the same time, and then the rotating shaft of the motor is sleeved in the ball bearing and the sealing ring, so that the installation is simple.
Drawings
The present invention will be further understood from the following description taken in conjunction with the accompanying drawings, the emphasis instead being placed upon illustrating the principles of the embodiments.
Fig. 1 is a schematic view of the overall structure of a motor shaft extension sealing structure in the embodiment of the invention;
FIG. 2 is a schematic view of the overall structure of another motor shaft extension sealing structure in the embodiment of the invention;
FIG. 3 is a first schematic diagram of the overall structure of a seal ring according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the overall structure of a seal ring according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a motor shaft sealed by a frame oil seal according to the prior art;
FIG. 6 is a schematic structural diagram of a sealing structure of a motor shaft extension end in the prior art;
FIG. 7 is a schematic structural diagram of a shaft extension sealing structure of a motor in the prior art;
FIG. 8 is a schematic view of a prior art generator bearing seal.
Description of reference numerals: 1. a motor end cover; 2. a motor shaft; 3. a ball bearing; 4. a seal ring; 5. an oil inlet channel; 6. an oil outlet channel; 7. a slit passage; 8. a bearing cover; 9. a first oil storage passage; 10. a second oil storage passage; 11. a bolt; 12. a memory metal sheet; 13. a chamber;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to embodiments thereof; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Other systems, methods, and/or features of the present embodiments will become apparent to those skilled in the art upon review of the following detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the accompanying claims. Additional features of the disclosed embodiments are described in, and will be apparent from, the detailed description that follows.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it is to be understood that the terms "upper", "lower", "left", and "right", if any, may be used,
"right" and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the indicated device or component must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, terms describing positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms may be understood by those of ordinary skill in the art according to specific situations.
The invention relates to a motor shaft extension sealing structure and a motor, which explain the following embodiments according to the attached drawings:
the first embodiment is as follows:
reducing the friction loss of the motor is an effective method for improving the efficiency. At present, the protection level of a common high-efficiency motor is required to be IP55 or above, and a framework oil seal or a water slinger is sleeved at the outer end of a motor rotating shaft 2 in a motor shaft extension sealing method, as shown in figure 4. Although the framework oil seal can play a role in water and dust prevention, the friction resistance is increased when the shaft rotates due to the interference installation, the mechanical consumption of the motor is increased, the temperature rise of the bearing is improved, and the protection requirement cannot be effectively met when the motor is static due to the fact that the mechanical consumption is not increased by using the water slinger for protection. Therefore, there is a need to develop a shaft extension sealing structure of a motor with simple structure and small mechanical loss to improve the working efficiency of the motor.
As shown in fig. 1, a motor shaft extension sealing structure comprises a motor end cover 1, a motor rotating shaft 2, a ball bearing 3 and a sealing ring 4;
the motor rotating shaft 2 is arranged in the motor end cover 1 through a ball bearing 3; the sealing ring 4 is fixedly sleeved on the motor rotating shaft 2 through interference fit, and a gap channel 7 for lubricating grease to pass through is formed between the sealing ring and the motor end cover 1; the sealing ring 4 can be driven by the motor rotating shaft 2 to synchronously rotate, and the sealing ring and the end cover rotate relatively; an oil inlet channel 5 and an oil outlet channel 6 are arranged in the motor end cover 1, the oil inlet channel 5 is communicated with the inlet end of the gap channel 7 through the ball bearing 3, and the oil outlet channel 6 is communicated with the outlet end of the gap channel 7.
The sealing ring 4 is arranged between the motor end cover 1 and the bearing, one end of the sealing ring 4 is fixed on the motor rotating shaft 2, one side of the sealing ring 4 is abutted against the inner ring of the ball bearing 3, and the lubricating oil flows into the bearing through the oil inlet channel 5, then flows into the gap channel 7 between the sealing ring 4 and the motor end cover 1 through the bearing, and finally flows out of the oil outlet channel 6.
The lubricating grease of the bearing is utilized for sealing, so that the lubrication of the bearing can be ensured, the zigzag gap channel 7 can be filled with the lubricating grease, the sealing performance between the motor rotating shaft 2 and the motor end cover 1 is ensured, and the mechanical loss is reduced.
When the motor is installed, the ball bearing 3 and the sealing ring 4 can be heated at the same time, and then the motor rotating shaft 2 is sleeved in the ball bearing 3 and the sealing ring, so that the installation is simple.
Example two:
as shown in fig. 2, a motor shaft extension sealing structure comprises a motor end cover 1, a motor rotating shaft 2, a ball bearing 3 and a sealing ring 4;
the motor rotating shaft 2 is arranged in the motor end cover 1 through a ball bearing 3; the sealing ring 4 is fixedly sleeved on the motor rotating shaft 2 through interference fit, and a gap channel 7 for lubricating grease to pass through is formed between the sealing ring and the motor end cover 1; the sealing ring 4 can be driven by the motor rotating shaft 2 to synchronously rotate, and the sealing ring and the end cover rotate relatively; an oil inlet channel 5 and an oil outlet channel 6 are arranged in the motor end cover 1, the oil inlet channel 5 is communicated with the inlet end of the gap channel 7 through the ball bearing 3, and the oil outlet channel 6 is communicated with the outlet end of the gap channel 7. The slit passage 7 is arranged in a labyrinth-type zigzag manner, and the gap distance ranges from 0.5 mm to 1.0 mm.
The sealing ring 4 is arranged between the motor end cover 1 and the bearing, one end of the sealing ring 4 is fixed on the motor rotating shaft 2, one side of the sealing ring 4 is abutted against the inner ring of the ball bearing 3, and the lubricating oil flows into the bearing through the oil inlet channel 5, then flows into the tortuous gap channel 7 between the sealing ring 4 and the motor end cover 1 through the bearing, and finally flows out to the oil outlet channel 6.
Optionally, the motor shaft extension sealing structure further includes a bearing sealing cover 8, the bearing sealing cover 8 is fixedly disposed on the motor end cover 1, and a first channel is formed between the bearing sealing cover 8 and the ball bearing 3 and between the bearing sealing cover and the motor end cover 1. The first passage is communicated with the oil inlet passage 5, and bearing lubricating grease flows into the zigzag gap passage 7 through the oil inlet passage 5, the first passage and the bearing in sequence. The lubricating grease of the bearing is utilized for sealing, so that the lubrication of the bearing can be ensured, the zigzag gap channel 7 can be filled with the lubricating grease, the sealing performance between the motor rotating shaft 2 and the motor end cover 1 is ensured, and the mechanical loss is reduced.
When the motor is installed, the ball bearing 3 and the sealing ring 4 can be heated at the same time, and then the motor rotating shaft 2 is sleeved in the ball bearing 3 and the sealing ring, so that the installation is simple.
As a preferable technical scheme, a plurality of annular first oil storage channels 9 are arranged on the surface of one side, which is in contact with the motor rotating shaft 2, of the bearing seal cover 8. And a plurality of annular second oil storage channels 10 are arranged on the surface of one side of the motor end cover 1, which is in contact with the motor rotating shaft 2. The bearing sealing cover 8 is fixedly arranged on the motor end cover 1 through a bolt 11. The first oil storage channel 9 is arranged in the bearing sealing cover 8, and the second oil storage channel 10 is arranged in the motor end cover 1, so that the reliability of motor protection can be improved.
Example three:
as shown in fig. 1, a motor shaft extension sealing structure comprises a motor end cover 1, a motor rotating shaft 2, a ball bearing 3 and a sealing ring 4;
the motor rotating shaft 2 is arranged in the motor end cover 1 through a ball bearing 3; the sealing ring 4 is fixedly sleeved on the motor rotating shaft 2 through interference fit, and a gap channel 7 through which oil can pass is formed between the sealing ring and the motor end cover 1; the sealing ring 4 can be driven by the motor rotating shaft 2 to synchronously rotate, and the sealing ring and the end cover rotate relatively; an oil inlet channel 5 and an oil outlet channel 6 are arranged in the motor end cover 1, the oil inlet channel 5 is communicated with the inlet end of the gap channel 7 through the ball bearing 3, and the oil outlet channel 6 is communicated with the outlet end of the gap channel 7.
The sealing ring 4 is arranged between the motor end cover 1 and the bearing, one end of the sealing ring 4 is fixed on the motor rotating shaft 2, one side of the sealing ring 4 is abutted against the inner ring of the ball bearing 3, and the lubricating oil flows into the bearing through the oil inlet channel 5, then flows into the tortuous gap channel 7 between the sealing ring 4 and the motor end cover 1 through the bearing, and finally flows out to the oil outlet channel 6.
As a preferred solution, as shown in fig. 3, the outer surface of the sealing ring 4 located in the slit passage 7 is sealingly wrapped with a layer of memory metal foil 12, and a sealed chamber 13 is formed between the memory metal foil 12 and the outer surface of the sealing ring 4.
The memory metal foil 12 is arranged to have the property of deforming and bending towards the chamber 13 with increasing temperature. At low temperatures, the surface of the memory foil 12 is parallel to the outer surface of the sealing ring 4.
When the temperature rises, the middle position of the memory metal sheet 12 is deformed and bent towards the chamber 13, thereby increasing the gap distance of the slit passage 7, as shown in fig. 4. The width of the cavity 13 and the deformation characteristic parameters of the memory metal sheet 12 together determine the maximum value of the gap distance of the slit channel 7, and those skilled in the art can adjust and set the maximum value according to actual needs, which is not described herein again.
The outer side surface of the sealing ring 4, which is located in the gap channel 7, is wrapped with a layer of memory metal sheet 12 in a sealing mode, when the motor rotating shaft is heated, the middle position of the memory metal sheet 12 deforms and bends towards the direction of the cavity 13, so that the gap distance of the gap channel 7 is increased, the amount of lubricating grease flowing into the motor rotating shaft through the gap channel can be increased, the lubricating grease can be better utilized to take away redundant heat, and the temperature of the motor rotating shaft is reduced.
Optionally, the motor shaft extension sealing structure further includes a bearing sealing cover 8, the bearing sealing cover 8 is fixedly disposed on the motor end cover 1, and a first channel is formed between the bearing sealing cover 8 and the ball bearing 3 and between the bearing sealing cover and the motor end cover 1. The lubricating grease of the bearing is utilized for sealing, so that the lubrication of the bearing can be ensured, the zigzag gap channel 7 can be filled with the lubricating grease, the sealing performance between the motor rotating shaft 2 and the motor end cover 1 is ensured, and the mechanical loss is reduced.
When the motor is installed, the ball bearing 3 and the sealing ring 4 can be heated at the same time, and then the motor rotating shaft 2 is sleeved in the ball bearing 3 and the sealing ring, so that the installation is simple.
As a preferable technical scheme, a plurality of annular first oil storage channels 9 are arranged on the surface of one side, which is in contact with the motor rotating shaft 2, of the bearing seal cover 8. And a plurality of annular second oil storage channels 10 are arranged on the surface of one side of the motor end cover 1, which is in contact with the motor rotating shaft 2. The bearing sealing cover 8 is fixedly arranged on the motor end cover 1 through a bolt 11. The first oil storage channel 9 is arranged in the bearing sealing cover 8, and the second oil storage channel 10 is arranged in the motor end cover 1, so that the reliability of motor protection can be improved.
As a preferable technical solution, a first memory metal sheet is hermetically wrapped on a surface of the motor end cover on one side of the slot channel 7, and a sealed first cavity is formed between the first memory metal sheet and the surface of the motor end cover on one side of the slot channel 7. The first memory metal foil is arranged to have the property of deforming and bending towards the first chamber with increasing temperature. A first memory metal sheet is wrapped on the surface of one side, located on the gap channel 7, of the motor end cover in a sealing mode, a first sealed cavity is formed between the first memory metal sheet and the surface of one side, located on the gap channel 7, of the motor end cover, when the temperature of the motor rotating shaft rises, the gap distance of the gap channel can be increased, lubricating grease flowing into the motor rotating shaft is increased, and therefore redundant heat is better taken away, and the motor rotating shaft is cooled.
Accordingly, the present invention also provides a motor including the motor shaft extension sealing structure according to any one of embodiments 1, 2, and 3.
In summary, the motor shaft extension sealing structure and the motor disclosed by the invention have the following beneficial technical effects:
1. lubricating grease of the bearing is used for sealing, so that the lubrication of the bearing can be ensured, the tortuous gap channel can be filled with the lubricating grease, the sealing performance between the motor rotating shaft and the motor end cover is ensured, and the mechanical loss is reduced;
2. when the motor is installed, the ball bearing and the sealing ring can be heated at the same time, and then the rotating shaft of the motor is sleeved in the ball bearing and the sealing ring, so that the installation is simple.
Although the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications may be made without departing from the scope of the invention. That is, the methods, systems, and devices discussed above are examples, and various configurations may omit, replace, or add various processes or components as appropriate. For example, in alternative configurations, the methods may be performed in an order different than that described and/or various components may be added, omitted, and/or combined. Moreover, features described with respect to certain configurations may be combined in various other configurations, as different aspects and elements of the configurations may be combined in a similar manner. Further, elements therein may be updated as technology evolves, i.e., many of the elements are examples and do not limit the scope of the disclosure or claims.
Specific details are given in the description to provide a thorough understanding of the exemplary configurations including implementations. However, configurations may be practiced without these specific details, such as well-known circuits, processes, algorithms, structures, and techniques, which have been shown without unnecessary detail in order to avoid obscuring the configurations. This description provides example configurations only, and does not limit the scope, applicability, or configuration of the claims. Rather, the foregoing description of the configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes may be made in the function and arrangement of elements without departing from the spirit or scope of the disclosure.
It is intended that the foregoing detailed description be regarded as illustrative rather than limiting, and that it be understood that it is the following claims, including all equivalents, that are intended to define the spirit and scope of this invention. The above examples are to be construed as merely illustrative and not limitative of the remainder of the disclosure. After reading the description of the invention, the skilled person can make various changes or modifications to the invention, and these equivalent changes and modifications also fall into the scope of the invention defined by the claims.
Claims (6)
1. The utility model provides a motor shaft extension seal structure which characterized in that: the motor comprises a motor end cover, a motor rotating shaft, a ball bearing and a sealing ring;
the motor rotating shaft is arranged in the motor end cover through a ball bearing;
the sealing ring is fixedly sleeved on the motor rotating shaft, and a gap channel for lubricating grease to pass through is formed between the sealing ring and the motor end cover;
the sealing ring can be driven by the motor rotating shaft to synchronously rotate and relatively rotate with the end cover;
an oil inlet channel and an oil outlet channel are arranged in the motor end cover, the oil inlet channel is communicated with the inlet end of the gap channel through a ball bearing, and the oil outlet channel is communicated with the outlet end of the gap channel.
2. The motor shaft extension sealing structure of claim 1, further comprising a bearing cover fixedly disposed on the motor end cap and forming a first passage with the ball bearing and the motor end cap.
3. The motor shaft extension sealing structure according to claim 2, wherein a plurality of annular first oil storage passages are provided on a surface of one side of the bearing cover contacting the motor rotating shaft.
4. The motor shaft extension sealing structure according to claim 3, wherein a plurality of annular second oil storage channels are formed on a surface of one side of the motor end cover, which is in contact with the motor rotating shaft.
5. The motor shaft extension sealing structure of claim 4, wherein the bearing cover is fixedly arranged on the motor end cover through bolts.
6. An electric motor comprising the motor shaft extension sealing structure according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010326909.1A CN111446801A (en) | 2020-04-23 | 2020-04-23 | Motor shaft extension sealing structure and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010326909.1A CN111446801A (en) | 2020-04-23 | 2020-04-23 | Motor shaft extension sealing structure and motor |
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| Publication Number | Publication Date |
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| CN111446801A true CN111446801A (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010326909.1A Pending CN111446801A (en) | 2020-04-23 | 2020-04-23 | Motor shaft extension sealing structure and motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112838700A (en) * | 2020-12-30 | 2021-05-25 | 京信通信技术(广州)有限公司 | Antenna, motor package, power motor, package shell and output connecting shaft |
| CN113659758A (en) * | 2021-06-30 | 2021-11-16 | 中车株洲电机有限公司 | Permanent magnet traction motor bearing configuration structure and sealing method |
-
2020
- 2020-04-23 CN CN202010326909.1A patent/CN111446801A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112838700A (en) * | 2020-12-30 | 2021-05-25 | 京信通信技术(广州)有限公司 | Antenna, motor package, power motor, package shell and output connecting shaft |
| CN113659758A (en) * | 2021-06-30 | 2021-11-16 | 中车株洲电机有限公司 | Permanent magnet traction motor bearing configuration structure and sealing method |
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