CN209748320U - But car motor of quick replacement bearing - Google Patents
But car motor of quick replacement bearing Download PDFInfo
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- CN209748320U CN209748320U CN201920541294.7U CN201920541294U CN209748320U CN 209748320 U CN209748320 U CN 209748320U CN 201920541294 U CN201920541294 U CN 201920541294U CN 209748320 U CN209748320 U CN 209748320U
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Abstract
The utility model relates to a but car motor of quick replacement bearing has solved in the motor maintenance process, when tearing open and trade the bearing, needs carry out the problem that wholly shifts out to the rotor subassembly. The structure comprises a stator, a rotor, a front cover, a rear cover and a shell stator, wherein the stator, the rotor, the front cover, the rear cover and the shell stator are arranged in a shell; the front cover is fixed at the front part of the shell, the rear cover is fixed at the rear part of the shell, a front bearing seat is fixed in the front cover, the front bearing seat, the front outer cover and the front inner cover enclose a front bearing chamber, a rear bearing seat is fixed in the rear end cover, and the rear bearing seat and the rear inner cover enclose a rear bearing chamber; the main shaft penetrates through the front bearing, the rotor and the rear bearing, and a wave spring is arranged between the rear part of the rear bearing and the rear outer cover; the front bearing and the rear bearing are respectively connected with the front cover and the rear cover through a front bearing seat and a rear bearing seat, the matching surface of each bearing seat and the corresponding front cover or rear cover is a frustum surface, and the radius difference of two end surfaces of the frustum surface is greater than the unilateral air gap between the stator and the rotor; the front bearing seat and the rear bearing seat are both in a flange circular truncated cone structure, and the inner hole is cylindrical.
Description
Technical Field
The utility model relates to the technical field of electric machines, especially, relate to a but automobile motor of quick replacement bearing.
Background
At present, in a driving motor structure applied to the new energy automobile industry, the type of the driving motor structure is generally a permanent magnet synchronous motor. The main vulnerable part is the bearing, and the overwhelming majority of current structure is that front and back bearing is direct to be installed and is covered in the front and back, and such structure need take apart the complete machine when changing the bearing, just is convenient for change the bearing with the rotor shifts out the organism, and the in-process can be because the magnetism problem of permanent-magnet machine rotor and the rotor protection requirement is higher, makes the cost of changing the bearing higher relatively.
according to the patent literature report, the patent publication No. CN203722387U discloses a motor capable of rapidly replacing a bearing, and discloses a structure capable of rapidly replacing the bearing, which comprises a machine shell, a stator, a rotor, a front end cover, a front bearing seat, a front bearing outer press plate, a front bearing inner press plate, a locking round nut, a rear bearing, a retainer ring, a rear bearing inner press plate, a shaft, a sealing ring, a rear bearing seat and a rear end cover, and the structure is mainly characterized in that the front bearing seat and the rear bearing seat are combined into a cylindrical surface together with the front cover and the rear cover. Although the structure can also enable the bearing to be quickly and simply replaced, the operation precision is poor, the fluctuation of the breath between the stator and the rotor is large, the bearing is in a non-coaxial working environment for a long time, and the service life is shortened.
According to the patent literature report, patent publication No. CN207039350U discloses a bearing-detachable motor structure, which comprises a rotor, a stator, a rotating shaft, a front bearing, a rear bearing, a front protecting cover, a rear protecting cover, a front end cover and a rear end cover. The front end cover and the rear end cover of the structure are both provided with the notch grooves, the structure is relatively complex, and time and labor are consumed in processing and manufacturing.
SUMMERY OF THE UTILITY MODEL
The utility model aims at changing the not enough of prior art condition, but provide a but car motor of quick replacement bearing.
the utility model provides a technical scheme as follows: an automobile motor capable of quickly replacing a bearing comprises a stator, a rotor, a front cover, a rear cover and a shell, wherein the stator is arranged inside the shell; the front cover is fixed at the front part of the shell, the rear cover is fixed at the rear part of the shell, a front bearing seat is fixed in the front cover, the front bearing seat, the front outer cover and the front inner cover enclose a front bearing chamber, a rear bearing seat is fixed in the rear end cover, and the rear bearing seat and the rear inner cover enclose a rear bearing chamber; the main shaft penetrates through the front bearing, the rotor and the rear bearing, and a wave spring is arranged between the rear part of the rear bearing and the rear outer cover; the front bearing and the rear bearing are respectively connected with the front cover and the rear cover through a front bearing seat and a rear bearing seat, the matching surface of the front bearing seat and the front cover is a frustum surface, the matching surface of the rear bearing seat and the rear cover is a frustum surface, and the radius difference of two end surfaces of the frustum surface is larger than the unilateral air gap between the stator and the rotor; the front bearing seat and the rear bearing seat are both in a flange circular truncated cone structure, and the inner hole is cylindrical.
The utility model has the advantages that: the utility model discloses the structure is split type, has carried out split type structure with the front and back end cover bearing frame department of traditional motor, with bearing direct mount around original on the end cover, become by the front and back bearing installation on the front and back bearing frame, the bearing frame links to each other with the front and back end cover around then. The structure has the advantages that the front end cover and the rear end cover are not required to be disassembled with time and labor when the bearing is replaced, so that the bearing is replaced and maintained after the rotor is integrally moved out, and the bearing can be replaced only by disassembling the front bearing seat and the rear bearing seat out of the machine body. The structure also avoids the problem of magnetic protection of the surface of the rotor after the rotor moves out of the machine body, and increases the convenience and reliability of operation safety and maintenance. And the matching surfaces of the front bearing seat, the rear bearing seat, the front cover and the rear cover have certain taper, so that the condition that the front bearing and the rear bearing are not concentric in the installation and maintenance process is avoided, and the function of protecting the bearings is achieved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the front bearing chamber;
FIG. 3 is a schematic structural view of the rear bearing chamber;
FIG. 4 is a schematic view of a support ring;
FIG. 5 is a schematic view of the front cover structure;
FIG. 6 is a schematic view of the rear cover structure;
FIG. 7 is a front bearing block view;
Fig. 8 is a rear bearing block view.
partial sequence numbers in the figures illustrate: 100 main shafts, 200 front bearings, 300 backing plates, 400 front outer covers, 500 front bearing seats, 600 front inner covers, 700 front covers, 800 rotors, 900 casings, 1000 stators, 1100 rear covers, 1200 rear inner covers, 1300 rear bearing seats, 1400 rear bearings, 1500 wave springs and 1600 support rings.
Detailed Description
the utility model provides an automobile motor capable of rapidly replacing a bearing, which comprises a stator, a rotor, a front cover, a rear cover and a casing, wherein the stator is arranged inside the casing; the front cover is fixed at the front part of the shell, the rear cover is fixed at the rear part of the shell, a front bearing seat is fixed in the front cover, the front bearing seat, the front outer cover and the front inner cover enclose a front bearing chamber, a rear bearing seat is fixed in the rear end cover, and the rear bearing seat and the rear inner cover enclose a rear bearing chamber; the main shaft penetrates through the front bearing, the rotor and the rear bearing, and a wave spring is arranged between the rear part of the rear bearing and the rear outer cover; the front bearing and the rear bearing are respectively connected with the front cover and the rear cover through a front bearing seat and a rear bearing seat, the matching surface of the front bearing seat and the front cover is a frustum surface, the matching surface of the rear bearing seat and the rear cover is a frustum surface, in particular to the side shape of a truncated cone, and the radius difference of two end surfaces of the frustum surface is larger than the unilateral air gap between the stator and the rotor; the front bearing seat and the rear bearing seat are both in a flange circular truncated cone structure, and the inner hole is cylindrical.
Preferably: the front end of the front bearing is a base plate, the rear end of the front bearing is a front inner cover, the outer portion of the front bearing is a bearing seat, the front end of the base plate is a front outer cover, a screw is screwed in a threaded hole of the front outer cover, the base plate, the bearing and the front inner cover are tightly attached through pressure applied to the base plate by the screw, axial fixation of the front bearing is achieved, machining errors are compensated, and axial movement of a rotor shaft system is prevented.
Preferably: the main shaft is an internal spline integrated hollow shaft, and the internal spline is matched with an external spline of the gearbox shaft.
Preferably: the front outer cover, the front bearing seat and the front inner cover are connected through screws.
Preferably: the front outer cover, the front bearing seat and the front cover are connected through screws.
Preferably: the rear bearing seat is connected with the rear cover through screws.
preferably: the rear bearing seat is connected with the rear inner cover through screws.
The specific structure of the present invention is described in detail below with reference to fig. 1-8, the motor is mainly a permanent magnet synchronous motor, comprising a 900 casing, a 1000 stator installed inside the 900 casing, a 700 front cover and a 1100 back cover fixed at both ends of the 900 casing by screws, a front through hole is arranged in the 700 front cover, the through hole structure is a ladder structure, a large aperture is a cylindrical surface, a small aperture is a circular truncated cone structure, a back through hole is arranged in the 1100 back cover, the through hole is a circular truncated cone structure, 500 front bearing seats are fixed in the front through hole by screws, a 400 front outer cover and a 600 front inner cover are respectively arranged in front of and behind the 500 front bearing seats, a 500 front bearing seat inner hole is a cylindrical surface, a 400 front outer cover, a 600 front inner cover and a 500 front bearing seat inner hole cylindrical surfaces form a front bearing chamber, a 200 front bearing is placed in the front bearing chamber, and a 300 backing plate is arranged between the 400 front outer cover and the 200, the rear through hole is internally provided with a 1300 rear bearing seat, the 1300 rear bearing seat is internally provided with a cylindrical hole, the front end of the 1300 rear bearing seat is fixedly provided with a 1200 rear inner cover through a screw, the bottom surfaces of the cylindrical holes of the 1200 rear inner cover and the 1300 rear bearing seat form a rear bearing chamber, a 1400 rear bearing is placed in the rear bearing chamber, a 1500 wave spring is placed between the 1400 rear bearing and the bottom surface of the cylindrical hole of the 1300 rear bearing seat, the bearing inner rings of the 200 front bearing and the 1400 rear bearing are arranged on a 100 main shaft, and the middle part of the 100 main shaft is fixedly provided with an.
As shown in fig. 5, a front cover 700 is provided with a 701 cylindrical hole and a 702 circular truncated cone hole, 703 is a front bearing seat fixing threaded hole, and the 702 circular truncated cone hole can realize time and labor saving of bearing installation and disassembly.
As shown in the figure 6 of the back cover, 1101 circular table holes are formed in the back cover 1100, 1102 are back bearing seat fixing threaded holes, and the 1101 circular table holes can save time and labor for mounting and dismounting the bearing.
As shown in fig. 7, a front bearing seat is illustrated, a cylindrical surface 501 bearing hole, a flange 502 and a circular truncated cone 503 are arranged in the front bearing seat 500, a screw through hole 504 and a screw hole 505 for disassembly are arranged on the flange 502, a front inner cover fixing hole 506 is arranged, and the circular truncated cone 503 and the circular truncated cone 702 are equal in structural size, so that time and labor can be saved when the bearing is assembled and disassembled.
as shown in fig. 8, a rear bearing seat is illustrated, a 1301 cylindrical surface bearing hole, a 1302 flange, a 1303 circular truncated cone and a 1304 cylindrical bearing hole side surface are arranged in a 1300 rear bearing seat, 1305 screw through holes and 1306 disassembly screw holes are arranged on the 1302 flange, a fixing hole is further arranged on a rear inner cover, wherein structural sizes of the 1303 circular truncated cone and the 1101 circular truncated cone hole are equal, and time and labor saving of bearing installation and disassembly can be realized.
the process method for disassembling and assembling the bearing is specifically described with reference to fig. 1 to 8:
And (3) disassembling: the method comprises the steps of firstly completely unscrewing bolts for connecting a front bearing seat and a rear bearing seat with a front cover and a rear cover, then ejecting the front bearing seat and the rear bearing seat by using screw disassembly holes, enabling a rotor to fall on an inner hole of a stator so as to prevent the shaft from inclining and bearing force of a single shaft, enabling a rotor assembly to disassemble a bearing after falling down, screwing a disassembly screw of the rear bearing seat into a screw hole of the disassembly screw and then ejecting the disassembly screw on the rear cover when disassembling the front bearing, pulling the front bearing out on the front inner cover by using a specific tool, and otherwise disassembling the rear bearing.
The installation steps are as follows: the front bearing seat and the rear bearing seat are removed, the front bearing and the rear bearing are sleeved on the main shaft in a hot mode, the front bearing seat and the rear bearing seat are installed, a wave spring is arranged between the side faces of the rear bearing and the rear bearing seat, the front bearing seat and the rear bearing seat are screwed, the main shaft and the rotor are lifted up, the main shaft is prevented from being high on one side and low on the other side, bearing damage caused by inclination of the main shaft is avoided, a base plate and a front outer cover are installed later, a front screw.
The inner hole of the front cover of the structure of the utility model is a step-shaped hole, the big hole is a cylindrical hole, the inner diameter of the big hole is equal to the outer diameter of the front outer cover, and a matching size is formed; the small hole is a circular truncated cone hole, the taper of the small hole is equal to that of the front bearing seat, and a matching size is formed; the outer diameter of the front bearing seat is of a stepped flange structure, and the outer diameter of the outer edge is slightly smaller than the inner diameter of the large diameter of the stepped hole of the front cover, so that the outer diameter of the front bearing seat is prevented from forming an over-positioning state with the matched part of the circular truncated cone and the circular truncated cone surface hole of the front cover; the inner hole of the rear cover is a circular truncated cone hole, the taper of the inner hole is the same as that of the circular truncated cone surface of the rear bearing seat of the flange circular truncated cone structure, and a matching size is formed; the rear end of the front bearing is provided with a front inner cover which has the functions of fixing the bearing and disassembling the plate when the bearing is disassembled; the front end of the rear bearing is provided with a rear inner cover which is used as a disassembling plate when the bearing is disassembled.
The above embodiment is only one of the aspects of the present invention, and is not intended to limit the present invention in any way, and other variations and modifications are possible without departing from the scope of the present invention as set forth in the claims.
Claims (7)
1. The utility model provides a but car motor of quick replacement bearing, includes stator, rotor, protecgulum, back lid and casing, its characterized in that: the stator is arranged in the shell; the front cover is fixed at the front part of the shell, the rear cover is fixed at the rear part of the shell, a front bearing seat is fixed in the front cover, the front bearing seat, the front outer cover and the front inner cover enclose a front bearing chamber, a rear bearing seat is fixed in the rear end cover, and the rear bearing seat and the rear inner cover enclose a rear bearing chamber; the main shaft penetrates through the front bearing, the rotor and the rear bearing, and a wave spring is arranged between the rear part of the rear bearing and the rear outer cover; the front bearing and the rear bearing are respectively connected with the front cover and the rear cover through a front bearing seat and a rear bearing seat, the matching surface of the front bearing seat and the front cover is a frustum surface, the matching surface of the rear bearing seat and the rear cover is a frustum surface, and the radius difference of two end surfaces of the frustum surface is larger than the unilateral air gap between the stator and the rotor; the front bearing seat and the rear bearing seat are both in a flange circular truncated cone structure, and the inner hole is cylindrical.
2. The motor for the vehicle with the quick-replaceable bearing according to claim 1, wherein: the front end of the front bearing is a base plate, the rear end of the front bearing is a front inner cover, the outer part of the front bearing is a bearing seat, and the front end of the base plate is a front outer cover.
3. The motor for the vehicle with the quick-replaceable bearing according to claim 1, wherein: the main shaft is an internal spline integrated hollow shaft, and the internal spline is matched with an external spline of the gearbox shaft.
4. The motor for the vehicle with the quick-replaceable bearing according to claim 1, wherein: the front outer cover, the front bearing seat and the front inner cover are connected through screws.
5. The motor for the vehicle with the quick-replaceable bearing according to claim 1, wherein: the front outer cover, the front bearing seat and the front cover are connected through screws.
6. The motor for the vehicle with the quick-replaceable bearing according to claim 1, wherein: the rear bearing seat is connected with the rear cover through screws.
7. The motor for the vehicle with the quick-replaceable bearing according to claim 1, wherein: the rear bearing seat is connected with the rear inner cover through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920541294.7U CN209748320U (en) | 2019-04-20 | 2019-04-20 | But car motor of quick replacement bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920541294.7U CN209748320U (en) | 2019-04-20 | 2019-04-20 | But car motor of quick replacement bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209748320U true CN209748320U (en) | 2019-12-06 |
Family
ID=68721324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920541294.7U Active CN209748320U (en) | 2019-04-20 | 2019-04-20 | But car motor of quick replacement bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209748320U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113890258A (en) * | 2021-10-08 | 2022-01-04 | 广西汽车集团有限公司 | Motor assembly of electric drive axle and electric drive axle |
| CN114006494A (en) * | 2021-10-20 | 2022-02-01 | 西安中车永电捷力风能有限公司 | Wind driven generator with bearing unit capable of being disassembled on tower |
| CN114649892A (en) * | 2022-05-23 | 2022-06-21 | 山西省机电设计研究院有限公司 | Motor with auxiliary device is dismantled to bearing |
-
2019
- 2019-04-20 CN CN201920541294.7U patent/CN209748320U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113890258A (en) * | 2021-10-08 | 2022-01-04 | 广西汽车集团有限公司 | Motor assembly of electric drive axle and electric drive axle |
| CN113890258B (en) * | 2021-10-08 | 2023-08-04 | 广西汽车集团有限公司 | Motor assembly of electric drive axle and electric drive axle |
| CN114006494A (en) * | 2021-10-20 | 2022-02-01 | 西安中车永电捷力风能有限公司 | Wind driven generator with bearing unit capable of being disassembled on tower |
| CN114006494B (en) * | 2021-10-20 | 2024-02-02 | 西安中车永电捷力风能有限公司 | Wind driven generator capable of disassembling bearing unit on tower |
| CN114649892A (en) * | 2022-05-23 | 2022-06-21 | 山西省机电设计研究院有限公司 | Motor with auxiliary device is dismantled to bearing |
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