CN216721101U - Protection device for motor shaft extension end - Google Patents
Protection device for motor shaft extension end Download PDFInfo
- Publication number
- CN216721101U CN216721101U CN202123056791.4U CN202123056791U CN216721101U CN 216721101 U CN216721101 U CN 216721101U CN 202123056791 U CN202123056791 U CN 202123056791U CN 216721101 U CN216721101 U CN 216721101U
- Authority
- CN
- China
- Prior art keywords
- oil seal
- cover
- labyrinth
- motor
- protector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Motor Or Generator Frames (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The application provides a protector for motor shaft stretches end belongs to the shaft seal technical field of motor. The end cover is installed on the rotating shaft through a bearing, the oil seal cover is installed on the end cover, the oil seal chamber is arranged in the oil seal cover, the oil seal is located in the oil seal chamber, the end portion of the rotating shaft is provided with a flange, the oil seal cover and the flange are respectively provided with a labyrinth groove, and the two labyrinth grooves form a labyrinth seal structure between the oil seal cover and the flange. Be applied to motor shaft with this application and stretch the end, have simple structure, be convenient for implement, characteristics such as waterproof, dustproof, grease proofing, prevent silt, can guarantee that the motor satisfies IP67 requirement to effectively protected the oil blanket, improved the life of oil blanket.
Description
Technical Field
The application relates to a protection device for a motor shaft extension end, and belongs to the technical field of shaft sealing of motors.
Background
The motor is the power core of the new energy vehicle, and the common method for improving the transmission efficiency and saving the space in the new energy bus is to hang the motor externally on the chassis frame and directly connect the motor with the transmission shaft without a speed reducer for driving. The motor that directly exposes in the environment only axle extension end oil blanket provides the protection for the motor very insecure, and in case there is silt to get into the motor at the during operation, the oil blanket lip will lose original protective capacities because of wearing and tearing inefficacy very fast for the motor can not satisfy IP 67's requirement, thereby arouses phenomena such as motor insulation is bad, burns out. It is therefore of great importance to provide an effective shielding structure at the shaft extension end of the motor to solve such problems.
Among the existing protective measures, there are three common:
the first is to adopt multiple oil seals to prevent water and sludge from entering the motor by means of sealing, such as: CN214412470U sets up first oil blanket and second oil blanket, and CN208078786U sets up inboard oil blanket and outside oil blanket in the oil seal seat. But has the defects that the structure is complicated and the layout which is compact with the axial space is not suitable; secondly, the use of multiple oil seals necessarily increases the material cost and the manufacturing cost, and moreover, puts higher demands on the reliability.
The second is to isolate the inside and outside of the motor shaft by means of the cooperation of the set of retainer rings, such as: the CN212033896U is provided with a front end cover and a labyrinth cover to form an annular labyrinth groove, but has the defects that the dustproof and waterproof capability of a single-layer labyrinth structure is poor, the requirement of a motor IP67 cannot be met, and once a larger silt enters a small labyrinth groove gap, the structure of a knot is damaged; the CN208112387U is provided with a dovetail key, a dovetail key groove and an annular sealing brush, but has the defects of troublesome disassembly and poor sealing property, and can not meet the IP67 requirement of the motor; CN211670712U sets up outer retaining ring, first retaining ring and second retaining ring, but the defect lies in can only prevent that the great foreign matter of volume from getting into inside, and is general to waterproof, dustproof effect, can't satisfy motor IP67 requirement.
The third is that the corresponding parts are cleaned by attaching a blow-off part, so as to achieve the protection effect, such as: CN 26690267Y sets up at the motor shaft and extends the end and put the thing dish, and CN207150288U sets up the sluicing through-hole at the motor end cover, and CN209134198U and CN210518016U assemble the fan on the axle, and the defect lies in that its protective capacities is single, can only prevent dust, waterproof or prevent silt and can't satisfy motor IP67 requirement.
SUMMERY OF THE UTILITY MODEL
In view of this, the application provides a protector for motor shaft stretches end, and the device is used for motor shaft to stretch the end, can provide performances such as waterproof, dustproof, grease proofing, the silt prevention of motor, blocks that external medium gets into in the motor cavity, has protected the oil blanket effectively, has improved the life of oil blanket.
Specifically, the method is realized through the following scheme:
the utility model provides a protector for motor shaft stretches end, the end cover passes through the bearing and installs in the pivot, and the oil blanket lid is installed on the end cover, sets up the oil blanket room in the oil blanket lid, and the oil blanket is located the oil blanket room, and the pivot tip is equipped with the flange, the labyrinth groove has been seted up respectively on oil blanket lid and the flange, and two labyrinth grooves form labyrinth seal structure between the two.
According to the device, the flange and the oil seal cover are sleeved on the rotating shaft, the labyrinth grooves are formed in the oil seal cover and the flange and are matched to form a labyrinth seal structure, when a vehicle runs, the motor is in a working state, the rotating shaft and the flange rotate together, water and silt entering the labyrinth grooves can be effectively thrown to the outer side of the labyrinth grooves through the centrifugal force effect, the sealing and the protection of the rotating shaft are realized, and the motor is endowed with good waterproof and silt-proof capabilities; meanwhile, the oil seal is protected, so that the service life of the oil seal is prolonged. The dustproof, waterproof, grease proofing ability of oil blanket and the labyrinth seal structure that the labyrinth groove formed mutually support, constitute the above-mentioned protector of this application, make the motor have good dustproof, waterproof, grease proofing, prevent the silt ability, guaranteed that the motor satisfies IP67 grade requirement.
Further, as preferable:
the bearing comprises a bearing inner ring and a bearing outer ring, the bearing inner ring is fixed with a shaft shoulder on the rotating shaft, and the bearing outer ring is fixed in a bearing chamber of the end cover. More preferably, the bearing outer ring is fixed in the end cover bearing chamber through a pressure plate, and the pressure plate adopts an elastic retainer ring for a hole; the bearing inner ring is fixed on the rotating shaft through a limiting sleeve, and the limiting sleeve adopts an elastic retainer ring for the shaft to prevent the bearing outer ring from axially moving.
The flange is arranged on the rotating shaft in an interference fit mode.
The labyrinth groove is provided with at least two pairs of grate teeth, the pairs of grate teeth form double sealing, even if external water, silt and the like enter the first layer of labyrinth, the second layer of labyrinth can also play a role in protecting the first layer of labyrinth, and the possibility of external impurities entering the inside of the motor is greatly reduced. More preferably, the grate teeth are provided with waterproof bosses, and the oil seal cover grate teeth are provided with the waterproof bosses, so that water and silt are effectively prevented from splashing to the outer ring of the oil seal cover and flowing into the labyrinth grooves due to impact.
The oil seal cover is provided with a drain hole, when a vehicle runs, the motor is in a working state, the rotating shaft and the flange rotate together, water and silt entering the labyrinth groove can be effectively thrown to the outer side of the labyrinth groove through the centrifugal force effect and are discharged through the drain hole of the oil seal cover, and more preferably, the drain hole is positioned at the bottom of the motor, so that the water and the silt are effectively discharged to the outside due to the gravity effect, and the water and the silt are prevented from accumulating at the bottom of the oil seal cover due to the stop work of the motor.
The oil seal cover is installed on the end cover through screws.
The oil seal cover is provided with a seal groove, and a seal ring is arranged in the seal groove to realize the seal of the oil seal cover and the end cover. The sealing groove is matched with the sealing ring, so that the assembly precision is improved, the sealing effect is better, and the motor is ensured to meet the IP67 requirement.
This application protector simple structure, the implementation of being convenient for has promoted waterproof, dustproof, grease proofing, the silt prevention ability of motor effectively and has protected the oil blanket, has improved the life of oil blanket.
Drawings
FIG. 1 is a schematic cross-sectional view of the present application;
FIG. 2 is a partial enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic view of the mounting structure of the oil seal cover of the present application;
FIG. 4 is a schematic perspective view of an oil seal cap according to the present application;
fig. 5 is a schematic perspective view of another perspective view of the oil seal cap of the present application.
Reference numbers in the figures: 1. an end cap; 2. sealing the oil cover; 21. a first grate tooth; 22. a second grate; 23. a drain hole; 24. an oil seal chamber; 25. a sealing groove; 26. a screw; 27. a boss; 3. a flange; 4. oil sealing; 5. a rotating shaft; 6. a bearing; 61. pressing a plate; 62. a limiting sleeve; 7. a seal ring; B. a labyrinth seal structure.
Detailed Description
The embodiment provides a protection device for motor shaft extension end, combine fig. 1 and fig. 2, end cover 1 installs on pivot 5 through bearing 6, and oil seal cover 2 installs on end cover 1, sets up oil seal chamber 24 in the oil seal cover 2, and oil blanket 4 is located oil seal chamber 24, and 5 tip of pivot are equipped with flange 3, and oil seal cover 2 begins to have labyrinth groove 25, and the position that corresponds with labyrinth groove 25 on the flange 3 has also seted up labyrinth groove (not marked in the figure), and combine fig. 2, two labyrinth groove formation labyrinth seal structure B.
According to the device, a flange 3 and an oil seal cover 2 are sleeved on a rotating shaft 5, labyrinth grooves are formed in the oil seal cover 2 and the flange 3 and are matched to form a labyrinth seal structure B, a motor is in a working state when a vehicle runs, the rotating shaft 5 and the flange 3 rotate together, water and silt entering the labyrinth grooves can be effectively thrown to the outer sides of the labyrinth grooves through the centrifugal force effect, the sealing and protection of the rotating shaft 5 are realized, and the motor is endowed with good waterproof and silt-proof capabilities; meanwhile, the oil seal 4 is also protected, so that the service life of the oil seal 4 is prolonged. The dustproof, waterproof and oilproof capability of the oil seal 4 and the protection device formed by the labyrinth seal structure B are matched with each other, so that the motor has good dustproof, waterproof, oilproof and silt-proof capabilities, and the motor is guaranteed to meet the requirement of IP67 grade.
As an alternative: the bearing 6 comprises a bearing inner ring and a bearing outer ring, the bearing inner ring is fixed with a shaft shoulder on the rotating shaft 5, and the bearing outer ring is fixed in a bearing chamber of the end cover 1. Preferably, the bearing outer ring is fixed in the bearing chamber of the end cover 1 through a pressure plate 61, and the pressure plate 61 adopts a circlip for holes; the bearing inner ring is fixed on the rotating shaft 5 through a limiting sleeve 62, and the limiting sleeve 62 adopts an elastic retainer ring for a shaft to prevent the bearing outer ring from axially moving.
As an alternative: the flange is arranged on the rotating shaft in an interference fit manner.
As an alternative: referring to fig. 4 and 5, the labyrinth groove 25 is provided with two pairs of grates, namely a first grate 21 and a second grate 22, and the paired grates form double sealing, so that even if external water, silt and the like enter the first layer of labyrinth, the second layer of labyrinth can also play a role in protecting the first layer of labyrinth, thereby greatly reducing the possibility of external impurities entering the interior of the motor. Preferably, referring to fig. 3, the grate teeth are provided with waterproof bosses 27, and the oil seal cover grate teeth are provided with waterproof bosses 27, so that water and silt can be effectively prevented from splashing to the outer ring of the oil seal cover 2 and flowing into the labyrinth grooves.
As an alternative: the oil seal cover 2 is provided with a drain hole 23, when a vehicle runs, the motor is in a working state, the rotating shaft 5 and the flange 3 rotate together, water and silt entering the labyrinth groove can be effectively thrown to the outer side of the labyrinth groove through the centrifugal force effect and are discharged through the drain hole 23 of the oil seal 2, preferably, the drain hole 23 is positioned at the bottom of the motor, the water and the silt are effectively discharged to the outside through the gravity effect, and the water and the silt are prevented from being accumulated at the bottom of the oil seal cover 2 due to the stop work of the motor.
As an alternative: referring to fig. 3, the oil cover 2 is mounted on the end cover 1 by screws 26.
As an alternative: the oil seal cover 2 is provided with a seal groove 25, and a seal ring 7 is arranged in the seal groove 25 to realize the seal between the oil seal cover 4 and the end cover 1. The sealing groove 25 is matched with the sealing ring 7, so that the assembly precision is improved, the sealing effect is better, and the motor is ensured to meet the IP67 requirement.
This application protector simple structure, the implementation of being convenient for has promoted waterproof, dustproof, grease proofing, the silt prevention ability of motor effectively and has protected the oil blanket, has improved the life of oil blanket.
Claims (10)
1. The utility model provides a protector for motor shaft extension end which characterized in that: the end cover is installed on the rotating shaft through a bearing, the oil seal cover is installed on the end cover, the oil seal chamber is arranged in the oil seal cover, the oil seal is located in the oil seal chamber, the end portion of the rotating shaft is provided with a flange, the oil seal cover and the flange are respectively provided with a labyrinth groove, and the two labyrinth grooves form a labyrinth seal structure between the oil seal cover and the flange.
2. A protector for the shaft extension end of an electric motor according to claim 1, wherein: the bearing comprises a bearing inner ring and a bearing outer ring, the bearing inner ring is fixed with a shaft shoulder on the rotating shaft, and the bearing outer ring is fixed in a bearing chamber of the end cover.
3. A protector for the shaft extension end of an electric motor according to claim 2, wherein: the bearing outer ring is fixed in the end cover bearing chamber through a pressing plate.
4. A protector for the shaft extension end of an electric motor according to claim 2, wherein: the bearing inner ring is fixed on the rotating shaft through a limiting sleeve.
5. A protector for the shaft extension end of an electric motor according to claim 1, wherein: the flange is arranged on the rotating shaft in an interference fit mode.
6. A protector for the shaft extension end of an electric motor according to claim 1, wherein: the oil seal cover is provided with a seal groove, and a seal ring is arranged in the seal groove to realize the seal of the oil seal cover and the end cover.
7. A protector for the shaft extension end of an electric motor according to claim 1, wherein: the labyrinth groove has at least two pairs of grate teeth.
8. A protector for the shaft extension end of an electric motor according to claim 7, wherein: the grate teeth are provided with waterproof bosses.
9. A protector for the shaft extension end of an electric motor according to claim 1, wherein: and a drain hole is formed in the oil seal cover.
10. A shield for a shaft extension end of an electric motor as defined in claim 9, wherein: the drain hole is positioned at the bottom of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123056791.4U CN216721101U (en) | 2021-12-07 | 2021-12-07 | Protection device for motor shaft extension end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123056791.4U CN216721101U (en) | 2021-12-07 | 2021-12-07 | Protection device for motor shaft extension end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216721101U true CN216721101U (en) | 2022-06-10 |
Family
ID=81883866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123056791.4U Active CN216721101U (en) | 2021-12-07 | 2021-12-07 | Protection device for motor shaft extension end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216721101U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115833448A (en) * | 2022-11-28 | 2023-03-21 | 中通客车股份有限公司 | Driving motor's silt prevention device and new forms of energy passenger train |
-
2021
- 2021-12-07 CN CN202123056791.4U patent/CN216721101U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115833448A (en) * | 2022-11-28 | 2023-03-21 | 中通客车股份有限公司 | Driving motor's silt prevention device and new forms of energy passenger train |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2924192Y (en) | Output shaft waterproof sealing structure for high speed rotary equipment | |
| CN216721101U (en) | Protection device for motor shaft extension end | |
| CN105240532A (en) | Oil seal structure | |
| CN201150018Y (en) | Carbon brush closed automobile generator | |
| CN209762202U (en) | Wind power pitch-variable gearbox with dustproof sealing structure | |
| CN201265651Y (en) | Sealing device for mechanical rotating shaft | |
| CN103401341A (en) | Motor combined hermetically-sealed structure | |
| CN203784108U (en) | Middle bearing frame assembly | |
| CN101633145B (en) | Angle grinder | |
| CN203352348U (en) | Motor combined-type sealing structure | |
| JP7206083B2 (en) | Vertical axis wind turbine gearbox | |
| CN108566017B (en) | Motor capable of effectively preventing shaft current from ablating bearing | |
| CN208198006U (en) | Drive axle wheel hub oil seal protects structure | |
| CN216618546U (en) | Electric tool oil seal and motor shaft sealing structure | |
| CN215419853U (en) | Oil seal dustproof structure of electric vehicle hub motor | |
| CN213981680U (en) | Bearing dust-proof and noise-reducing device | |
| CN218829484U (en) | Three-phase low-voltage asynchronous motor with heat radiation structure | |
| CN205089981U (en) | Independently arrange two -way multiple sealing device of fat formula | |
| CN213685001U (en) | Shaft end cover for transmission shaft | |
| CN218472893U (en) | Protection seal structure and motor | |
| CN210468978U (en) | Sealing structure of motor | |
| CN216122028U (en) | Motor silica gel oil seal assembly for stirrer | |
| CN2629325Y (en) | Water filling underwater six pole motor | |
| CN221628675U (en) | Bearing heat dissipation fat-reducing structure | |
| CN221300112U (en) | Sealing structure of drive axle and agricultural machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |