CN220286323U - Speed reducer directly connected with high-speed permanent magnet motor - Google Patents
Speed reducer directly connected with high-speed permanent magnet motor Download PDFInfo
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- CN220286323U CN220286323U CN202321459408.6U CN202321459408U CN220286323U CN 220286323 U CN220286323 U CN 220286323U CN 202321459408 U CN202321459408 U CN 202321459408U CN 220286323 U CN220286323 U CN 220286323U
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 36
- 230000005540 biological transmission Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 5
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a speed reducer directly connected with a high-speed permanent magnet motor, which comprises a speed reducer shell, a high-speed permanent magnet motor output shaft and an inclined gear sun gear, wherein an idler wheel frame is arranged on one side in the speed reducer shell, an output gear bearing seat is arranged on the other side in the speed reducer shell, the output shaft of the high-speed permanent magnet motor is coaxially sleeved with the inclined gear sun gear, four-point contact bearings are arranged on the end face, close to the motor, of the inclined gear sun gear, the inclined gear sun gear is meshed with a plurality of inclined gear idler wheels and is meshed with the inclined gear idler wheels in a floating manner in the middle of the inclined gear sun gear.
Description
Technical Field
The utility model relates to the field of power transmission, in particular to a speed reducer directly connected with a high-speed permanent magnet motor.
Background
Gear transmission is the most commonly used form in the field of mechanical equipment, and external gear transmission is simple in structure, but large in size and low in power density; the internal engagement transmission has small volume and light weight. External gear transmission often uses helical gears to replace straight gears, so that the bearing capacity can be improved, and the noise can be reduced. In recent years, as internal gear wheel machines and internal gear grinding machines have been industrially used, helical tooth internal gears have also begun to be used in planetary reducers. The planetary reducer has the advantages of large transmission ratio, high bearing capacity and light weight. The planetary reducer comprising the helical tooth inner gear ring is a core part of main transmission of the electric commercial automobile. The inner gear ring of the planet speed reducer commonly used in industry is fixed, the planet carrier outputs power, when the output rotating speed is higher than 1800 revolutions per minute, the planet wheel on the planet carrier rotates at a high speed, and the planet wheel rotates along with the planet carrier, so that impact is easily generated with the inner gear ring to cause noise and vibration.
Disclosure of Invention
The technical problem to be solved by the application is to overcome the existing defects, and provide the speed reducer directly connected with the high-speed permanent magnet motor, so that the problems of large volume and low power density when the output rotating speed of the high-speed permanent magnet motor is low are solved, and the problems of poor dynamic performance, high noise and large vibration when the rotating speed exceeds 1800 revolutions per minute can be solved by replacing the planetary speed reducer.
In order to achieve the above purpose, the present application provides the following technical solutions: the speed reducer comprises a speed reducer shell, a high-speed permanent magnet motor output shaft and an inclined tooth sun gear, wherein an idler wheel frame is arranged on one side in the speed reducer shell, an output gear bearing seat is arranged on the other side in the speed reducer shell, the high-speed permanent magnet motor output shaft is coaxially sleeved with the inclined tooth sun gear, four-point contact bearings are arranged on the end face, close to a motor, of the inclined tooth sun gear, the inclined tooth sun gear is meshed with a plurality of inclined tooth idler wheels and meshed with the middle of the inclined tooth sun gear in a floating mode, a shaft of the inclined tooth idler wheel is fixedly arranged with the idler wheel frame, the inclined tooth idler wheels are sleeved on an idler wheel shaft through bearings, the inclined tooth idler wheels are meshed with one inclined tooth inner gear ring at the same time and drive the inclined tooth inner gear ring to rotate, on one side close to an output gear bearing seat, the inclined tooth output gear is sleeved with the inclined tooth inner gear ring gear and coaxially rotates, power from the high-speed permanent magnet motor is output by a spline of the inclined tooth output gear after being reduced by the speed reducer, and the four-point contact bearings sleeved on the inclined tooth sun gear are used for bearing the axial force generated by meshing the inclined tooth sun gear and the inclined tooth idler wheel.
As a preferable technical scheme of the application, the helical gear sun gear is directly connected with the output shaft of the high-speed permanent magnet motor through the internal and external splines, and a radial clearance is kept between the helical gear and the output shaft of the motor.
As a preferable technical scheme of the application, the output end of the high-speed permanent magnet motor is connected with the input end of the speed reducer, and one side of the output end of the speed reducer is provided with a helical tooth output gear.
As a preferred solution of the present application, the helical gear output is supported in the bore of the output gear bearing housing by a radial thrust bearing set comprising a first radial thrust bearing and a second radial thrust bearing, which are in socket engagement with the helical gear output.
As a preferred embodiment of the present application, the first and second thrust bearings consist of angular contact bearings and tapered roller bearings, or of deep groove ball bearings and four-point contact bearings.
As a preferred technical scheme of the application, the helical tooth inner gear ring is fixed through an elastic check ring group, the elastic check ring group consists of a first check ring and a second check ring, and the two first check rings and the second check ring are axially arranged.
Compared with the prior art: the utility model has the advantages of large reduction ratio of the planetary reducer, high transmission power density, small volume and light weight, can be applied to an electric automobile drive axle and a hub reducer as main driving parts, transmits power to the helical tooth inner gear ring through the meshing mode of a plurality of helical tooth idler gears, and the helical tooth inner gear ring is sleeved with the helical tooth output gear to reduce the power and increase the torque for output, thereby effectively solving the problems of poor dynamic performance, high noise and large vibration.
Drawings
FIG. 1 is a schematic cross-sectional view of the present application;
FIG. 2 is a schematic diagram of the input end configuration of the decelerator;
FIG. 3 is a schematic diagram of a speed reducer;
FIG. 4 is a schematic diagram of a high-speed permanent magnet motor;
FIG. 5 is a schematic diagram of a high-speed permanent magnet motor;
fig. 6 is a second schematic structural diagram of the high-speed permanent magnet motor.
In the figure: the speed reducer comprises a speed reducer shell, a 2 idler wheel frame, a 3 four-point contact bearing, a 4 helical gear sun gear, a 5 helical gear idler gear, a 6 helical gear ring, a 7 helical gear output gear, a 8 first centering thrust bearing, a 9 second centering thrust bearing, a 10 locking nut, a 11 output gear bearing seat, a 12 first check ring, a 3 second check ring, a 14 speed reducer input end, a 15 speed reducer output end, a 16 speed reducer, a 17 high-speed permanent magnet motor and a 18 high-speed permanent magnet motor output shaft.
Description of the embodiments
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. Based on the examples in the present application. All other embodiments, which can be made by those skilled in the art without the inventive effort, are intended to be within the scope of the present application.
Please refer to fig. 1-6, the present application provides a technical solution: the utility model provides a direct-connected in high-speed permanent magnet motor's reduction gear, including reduction gear casing 1, high-speed permanent magnet motor output shaft 18 and helical gear sun gear 4, one side installs idler wheel carrier 2 in the reduction gear casing 1, output gear housing 11 is installed to the opposite side in the reduction gear casing 1, high-speed permanent magnet motor output shaft 18 cup joints with helical gear sun gear 4 is coaxial, four-point contact bearing 3 is installed on helical gear sun gear 4 near the terminal surface of motor, helical gear sun gear 4 meshes with a plurality of helical gear idler 5 and float the meshing in the centre, helical gear idler 5's axle and idler wheel carrier 2 fixed mounting, helical gear idler 5 cup joints on the idler wheel axle through the bearing, a plurality of helical gear idler gear 5 meshes and drives helical gear ring 6 rotation simultaneously, helical gear output gear 7 cup joints and coaxial rotation with helical gear ring gear 6 in the one side that is close to output gear housing 11, come from high-speed permanent magnet motor 17 power is used for bearing 4 to bear helical gear 4 and produces axial force with helical gear 4 through helical gear output 7's spline output after the reduction gear 16, four-point contact bearing 3 on helical gear sun gear 4 cup joints is used for bearing 4 and bearing 4 produces axial force fixed meshing.
Specifically, the helical gear sun gear 4 distributes power from the high-speed permanent magnet motor 17 to the helical gear idler gears 5, the helical gear idler gears 5 transmit power to the helical gear ring 6 in a meshing mode, the helical gear ring 6 is sleeved with the helical gear output gear 7 to reduce power and increase torque, and the four-point contact bearing 3 sleeved on the helical gear sun gear 4 is used for bearing axial force generated by meshing of the helical gear sun gear 4 and the helical gear idler gears 5, so that the helical gear sun gear 4 is kept axially fixed.
Further, the helical gear 4 is directly connected with the output shaft 18 of the high-speed permanent magnet motor through internal and external splines, and maintains radial clearance with the output shaft of the motor.
Specifically, the helical sun gear 4 is axially fixed by the four-point contact bearing 3 sleeved on the helical sun gear, so that the helical sun gear 4 is in floating engagement among a plurality of helical idler gears 5, a plurality of engaged teeth are uniformly loaded, and the fatigue life of the helical sun gear is prolonged.
Further, the output end of the high-speed permanent magnet motor 17 is connected with the input end 14 of the speed reducer, and one side of the output end 15 of the speed reducer is provided with the helical tooth output gear 7.
Further, the helical output gear 7 is supported in the bore of the output gear bearing housing 11 by a radial thrust bearing set comprising a first radial thrust bearing 8 and a second radial thrust bearing 9, the first radial thrust bearing 8 and the second radial thrust bearing 9 being in socket engagement with the helical output gear 7.
Specifically, the use of the radial thrust bearing can make it rotate coaxially with the ring gear without axial disconnection, the radial thrust bearing group support can not only bear the axial acting force from the helical tooth ring gear 6, but also make the gear or the transmission member bearing the radial force and the axial force simultaneously mounted on the reducer output shaft 15, so that the transmission stability and the transmission precision of the helical tooth output gear 7 can be ensured, and unnecessary vibration and noise generated by the helical tooth output gear 7 during high-speed rotation are prevented.
Further, the first centering thrust bearing 8 and the second centering thrust bearing 9 are composed of angular contact bearings and tapered roller bearings, or are composed of deep groove ball bearings and four-point contact bearings 3.
Specifically, the structure can improve bearing capacity and transmission precision, and is also beneficial to reducing vibration and noise generated when the gear rotates at a high speed, and different bearing combinations are selected depending on specific application scenes and requirements.
Further, the helical tooth ring gear 6 is fixed through an elastic check ring group, the elastic check ring group is composed of a first check ring 12 and a second check ring 13, and the two first check rings 12 and the second check ring 13 are axially arranged.
Specifically, the first retainer ring 12 and the second retainer ring 13 can be disassembled and maintained as necessary while ensuring the fixability of the helical gear ring 6.
When in use: the high-speed permanent magnet motor 17 is started, the helical gear sun gear 4 distributes power from the high-speed permanent magnet motor 17 to the helical gear idler gears 5, the helical gear idler gears 5 transmit power to the helical gear ring 6 in a meshing mode, the helical gear ring 6 is sleeved with the helical gear output gear 7 to output torque which is decelerated by the speed reducer 16, the power is decelerated and torque is increased to be output, and the four-point contact bearing 3 sleeved on the helical gear sun gear 4 is used for bearing axial force generated by meshing of the helical gear sun gear 4 and the helical gear idler gears 5, so that the helical gear sun gear 4 is kept axially fixed, and stable output of power is realized.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a directly allies oneself with in high-speed permanent magnet machine's reduction gear, includes reduction gear casing (1), high-speed permanent magnet machine output shaft (18) and helical gear sun gear (4), and idler wheel carrier (2) are installed to one side in reduction gear casing (1), and output gear bearing (11), its characterized in that are installed to the opposite side in reduction gear casing (1): the output shaft (18) of the high-speed permanent magnet motor is coaxially sleeved with the helical gear sun gear (4), four-point contact bearings (3) are arranged on the end face, close to the motor, of the helical gear sun gear (4), the helical gear sun gear (4) is meshed with a plurality of helical gear idler gears (5) and is meshed with the middle of the helical gear sun gear, the shaft of the helical gear idler gears (5) is fixedly arranged with the idler gear frame (2), the helical gear idler gears (5) are sleeved on an idler shaft through bearings, the helical gear idler gears (5) are meshed with one helical gear ring (6) at the same time and drive the helical gear ring (6) to rotate, on one side, close to an output gear bearing seat (11), of the helical gear output gear (7) is sleeved with the helical gear ring (6) and rotates coaxially, power from the high-speed permanent magnet motor (17) is output by a spline of the helical gear output gear (7) after being decelerated through a speed reducer (16), and the four-point contact bearings (3) sleeved on the helical gear sun gear (4) are used for bearing axial force generated by the helical gear sun gear (4) and the helical gear idler gears (5), and the helical gear ring (5) are meshed to rotate, and the helical gear is kept axially fixed.
2. A decelerator directly coupled to a high speed permanent magnet motor according to claim 1 wherein: the helical gear sun gear (4) is directly connected with the output shaft (18) of the high-speed permanent magnet motor through internal and external splines, and maintains radial clearance with the output shaft of the motor.
3. A decelerator directly coupled to a high speed permanent magnet motor according to claim 1 wherein: the output end of the high-speed permanent magnet motor (17) is connected with the input end (14) of the speed reducer, and one side of the output end (15) of the speed reducer is provided with a helical tooth output gear (7).
4. A decelerator directly coupled to a high speed permanent magnet motor according to claim 1 wherein: the helical tooth output gear (7) is supported in a hole of the output gear bearing seat (11) by a centripetal thrust bearing group, wherein the centripetal thrust bearing group comprises a first centripetal thrust bearing (8) and a second centripetal thrust bearing (9), and the first centripetal thrust bearing (8) and the second centripetal thrust bearing (9) are sleeved with the helical tooth output gear (7).
5. The speed reducer for a direct-coupled high-speed permanent magnet motor according to claim 4, wherein: the first centering thrust bearing (8) and the second centering thrust bearing (9) consist of angular contact bearings and tapered roller bearings; or consists of a deep groove ball bearing and a four-point contact bearing (3).
6. A decelerator directly coupled to a high speed permanent magnet motor according to claim 1 wherein: the helical tooth inner gear ring (6) is fixed through an elastic check ring group, the elastic check ring group consists of a first check ring (12) and a second check ring (13), and the two first check rings (12) and the second check ring (13) are axially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321459408.6U CN220286323U (en) | 2023-06-09 | 2023-06-09 | Speed reducer directly connected with high-speed permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321459408.6U CN220286323U (en) | 2023-06-09 | 2023-06-09 | Speed reducer directly connected with high-speed permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220286323U true CN220286323U (en) | 2024-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321459408.6U Active CN220286323U (en) | 2023-06-09 | 2023-06-09 | Speed reducer directly connected with high-speed permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220286323U (en) |
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2023
- 2023-06-09 CN CN202321459408.6U patent/CN220286323U/en active Active
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