CN220349470U - Wheel edge driving assembly - Google Patents
Wheel edge driving assembly Download PDFInfo
- Publication number
- CN220349470U CN220349470U CN202322021266.1U CN202322021266U CN220349470U CN 220349470 U CN220349470 U CN 220349470U CN 202322021266 U CN202322021266 U CN 202322021266U CN 220349470 U CN220349470 U CN 220349470U
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- Prior art keywords
- main bearing
- steering knuckle
- mandrel
- gear
- motor
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- 238000005096 rolling process Methods 0.000 claims abstract description 26
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 230000010354 integration Effects 0.000 abstract description 6
- 230000035939 shock Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
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Abstract
The utility model discloses a wheel edge driving assembly, which relates to the field of wheel edge driving and comprises a sun wheel, a planetary gear, a steering knuckle, a mandrel, a motor and a rim, wherein the mandrel is arranged in the steering knuckle in a penetrating manner, the sun wheel is sleeved on the mandrel through an auxiliary bearing, one end of the mandrel, which is far away from the steering knuckle, is sleeved with a main bearing, and after the main bearing passes through the rim, an end cover is arranged at the end part for sealing; the motor is connected with a motor shaft, the motor shaft is biased at one side of the mandrel and meshed with a sun gear for transmission after penetrating into the steering knuckle, the sun gear is externally meshed with a plurality of planetary gears, each planetary gear is meshed with an internal gear arranged on the inner wall of the steering knuckle, and one planetary gear is sequentially fixed with the main bearing and the rim through shaft pins to drive the main bearing and the rim to rotate. According to the utility model, the motor is offset in space, the purpose of driving force offset is achieved, the main bearing three-row rolling bodies are additionally arranged, the shock resistance is improved, and the integrated steering knuckle structure is beneficial to the light weight integration of the lifting wheel edge driving assembly.
Description
Technical Field
The utility model relates to the field of wheel edge driving, in particular to a wheel edge driving assembly.
Background
The wheel edge driving adopts a mode of installing a wheel edge motor on the wheel edge to realize independent driving of the wheel. For example, chinese patent document (CN 213655614U) discloses a wheel rim driving assembly, which comprises a driving shaft and a hub unit, wherein the driving shaft is supported on the hub unit through a supporting bearing, a driving shaft gear is arranged on the driving shaft for driving a driven gear to rotate, a gear shaft is fixedly arranged on the driven gear, each gear shaft is sleeved with a planetary gear, and each planetary gear is meshed with a sun gear to form a planetary gear train; the sun gear is sleeved on the hub unit and meshed with the external spline on the outer surface of the flange of the hub unit; a brake disc is coaxially arranged on the leading end of the flange plate of the hub unit; the hub unit is mounted on the knuckle.
However, in the prior art taking this technical solution as an example, a mode of center-setting of a motor (motor shaft) is generally adopted, which results in that the space occupation of the wheel driving assembly is large, and is not beneficial to the weight reduction of the whole vehicle. In addition, in the prior art, a single bearing single-row or double-row rolling body is generally adopted, so that the overall shock resistance of the wheel rim driving assembly is poor, and therefore, improvement on the existing wheel rim driving assembly structure is required.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides the wheel driving assembly, which is used for biasing a motor in space to achieve the purpose of biasing driving force, and is additionally provided with three rows of rolling bodies of a main bearing, so that the shock resistance is improved, and the integrated knuckle structure is beneficial to the light weight integration of the lifting wheel driving assembly.
The utility model aims at being completed by the following technical scheme: the hub driving assembly comprises a sun gear, a planetary gear, a steering knuckle, a mandrel, a motor and a rim, wherein the mandrel is arranged in the steering knuckle in a penetrating manner, the sun gear is sleeved on the mandrel through an auxiliary bearing, one end, far away from the steering knuckle, of the mandrel is sleeved with a main bearing, and after the main bearing passes through the rim, an end cover is arranged at the end part of the main bearing to seal; the motor is connected with and drives a motor shaft, the motor shaft is biased at one side of the mandrel and meshed with a sun gear for transmission after penetrating into the steering knuckle, the sun gear is externally meshed with a plurality of planetary gears, each planetary gear is meshed with an internal gear arranged on the inner wall of the steering knuckle, one planetary gear is sequentially fixed with the main bearing and the rim through shaft pins, and the main bearing and the rim are driven to rotate.
As a further technical scheme, the main bearing comprises a main bearing outer ring, a main bearing inner ring A and a main bearing inner ring B, wherein two rows of rolling paths are arranged between the main bearing outer ring and the main bearing inner ring A and used for placing two rows of main bearing rolling bodies, and a row of rolling paths are arranged between the main bearing outer ring and the main bearing inner ring B and used for placing one row of main bearing rolling bodies.
As a further technical scheme, a sealing component is arranged between the main bearing outer ring and the steering knuckle.
As a further technical scheme, the auxiliary bearing comprises an auxiliary bearing outer ring and an auxiliary bearing inner ring, and two rows of rollaway nest are arranged between the auxiliary bearing outer ring and the auxiliary bearing inner ring and are used for placing two rows of auxiliary bearing rolling bodies.
As a further technical solution, the main bearing is fixed on the mandrel by means of a locking bolt.
As a further technical scheme, a needle bearing is arranged between the planetary gear and the shaft pin.
As a further technical scheme, the internal gear is limited on the steering knuckle through a clamping ring.
As a further technical scheme, the motor is embedded and arranged on the steering knuckle, and the gear ratio of the motor shaft and the sun gear is 1.5-2.5: 1.
as a further technical scheme, the number of the planetary gears is 3-5.
The beneficial effects of the utility model are as follows:
1. the motor and the motor shaft are in offset design relative to the mandrel, so that the purpose of driving force offset is achieved, the space occupied by the wheel-side motor can be effectively reduced, the space utilization rate in the wheel-side driving assembly is improved, and the rationalization of installation is facilitated;
2. the motor is embedded and installed on the steering knuckle, and meanwhile, the internal gear is integrally fixed in the steering knuckle, and the motor shaft and the mandrel are installed in the steering knuckle integrated body, namely, the steering knuckle adopts an integrated design, so that the integration rate of each part of the wheel driving assembly is improved, and the lightweight integration of the wheel driving assembly is facilitated;
3. the auxiliary bearings are arranged by adopting double-row rolling bodies, and the main bearings are arranged by adopting three-row rolling bodies, so that the shock resistance of the wheel rim driving assembly can be effectively improved, and the service life of the wheel rim driving assembly is prolonged.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is an enlarged partial schematic view of the area a in fig. 1.
Reference numerals illustrate: the motor comprises a motor shaft 1, a sun gear 2, a secondary bearing outer ring 3, a secondary bearing rolling element 4, a secondary bearing inner ring 5, a planetary gear 6, a shaft pin 7, a main bearing outer ring 8, a main bearing inner ring A9, a main bearing inner ring B10, a main bearing rolling element 11, a locking bolt 12, an end cover 13, a sealing assembly 14, an inner gear 15, a clamping ring 16, a knuckle 17, a mandrel 18, a motor 19, a needle bearing 20 and a rim 21.
Detailed Description
The utility model will be described in detail below with reference to the attached drawings:
examples: as shown in fig. 1 and 2, the wheel rim driving assembly comprises a motor shaft 1, a sun gear 2, a secondary bearing outer ring 3, a secondary bearing rolling body 4, a secondary bearing inner ring 5, a planetary gear 6, a shaft pin 7, a primary bearing outer ring 8, a primary bearing inner ring A9, a primary bearing inner ring B10, a primary bearing rolling body 11, a locking bolt 12, an end cover 13, a sealing assembly 14, an inner gear 15, a clamping ring 16, a steering knuckle 17, a mandrel 18, a motor 19, a needle bearing 20 and a rim 21.
Referring to fig. 2, the center of the knuckle 17 is perforated so that a spindle 18 is inserted into the knuckle 17, a sun gear 2 is sleeved on the spindle 18 through a secondary bearing, preferably, the secondary bearing comprises a secondary bearing outer ring 3 and a secondary bearing inner ring 5, two rows of raceways are arranged between the two rows of raceways, two rows of secondary bearing rolling bodies 4 are arranged, and the sun gear 2 is sleeved on the periphery of the secondary bearing outer ring 3. The right end (i.e. the end far away from the knuckle 17) of the mandrel 18 is sleeved with a main bearing, preferably the main bearing comprises a main bearing outer ring 8, a main bearing inner ring A9 and a main bearing inner ring B10, two rows of rolling tracks are arranged between the main bearing outer ring 8 and the main bearing inner ring A9 and are placed in the two rows of main bearing rolling bodies 11, and a row of rolling tracks are arranged between the main bearing outer ring 8 and the main bearing inner ring B10 and are placed in the row of main bearing rolling bodies 11. The auxiliary bearings are arranged by adopting double-row rolling bodies, and the main bearings are arranged by adopting three-row rolling bodies, so that the shock resistance of the wheel rim driving assembly can be effectively improved, and the service life of the wheel rim driving assembly is prolonged. Further, after the right side of the main bearing (the main bearing outer ring 8) passes through the rim 21, an end cover 13 is arranged at the end part to seal, preferably, the main bearing is locked and fixed on the mandrel 18 through a locking bolt 12, and the end cover 13 and the locking bolt 12 play a role in protecting and fixing the main bearing and can effectively prevent muddy water from invading.
Further, the motor 19 is embedded and installed on the steering knuckle 17, so that installation space can be saved, the motor 19 is connected and drives the motor shaft 1, the motor shaft 1 is biased above the mandrel 18, the motor and the motor shaft adopt a biasing design relative to the mandrel, the purpose of biasing the driving force is achieved, the space occupied by the wheel motor can be effectively reduced, the space utilization rate in the wheel driving assembly is improved, and the rationalization of installation is facilitated. Meanwhile, the motor shaft 1 (adopting a shaft end gear) penetrates into the steering knuckle 17 and then is meshed with the sun gear 2 for transmission, and preferably, the gear ratio of the motor shaft 1 to the sun gear 2 is 1.5-2.5: 1. the sun gear 2 is externally meshed with 3-5 planetary gears 6, each planetary gear 6 is meshed with an internal gear 15 arranged on the inner wall of a steering knuckle 17, preferably, the internal gear 15 and the steering knuckle 17 are integrally designed, a motor shaft 1 and a mandrel 18 are respectively arranged in the steering knuckle 17, the integration rate of each part of the wheel drive assembly is improved, and the lightweight integration of the wheel drive assembly is facilitated. Each planetary gear 6 is locked by a shaft pin 7, wherein one planetary gear 6 is sequentially fixed with a main bearing (a main bearing outer ring 8) and a rim 21 by the shaft pin 7, and drives the main bearing (the main bearing outer ring 8) and the rim 21 to rotate.
Preferably, a seal assembly 14 is provided between the main bearing outer race 8 and the knuckle 17 to prevent grease leakage and dust intrusion. A needle bearing 20 is provided between each planetary gear 6 and the shaft pin 7 to reduce rotational friction. The internal gear 15 is limited on the knuckle 17 through the snap ring 16, so that the stability during operation is improved.
The working process of the utility model comprises the following steps: when the planetary gear drive device works, the motor 19 drives the motor shaft 1 to rotate, the motor shaft 1 drives the sun gear 2 through meshing, so that the planetary gears 6 on the periphery of the sun gear 2 synchronously rotate, and as one planetary gear 6 is fixed with the main bearing outer ring 8 and the rim 21, the main bearing outer ring 8 and the rim 21 synchronously rotate along with the planetary gears 6, and the rim drive is realized.
It should be understood that equivalents and modifications to the technical scheme and the inventive concept of the present utility model should fall within the scope of the claims appended hereto.
Claims (9)
1. A wheel drive assembly, characterized in that: the novel steering wheel comprises a sun gear (2), a planetary gear (6), a steering knuckle (17), a mandrel (18), a motor (19) and a rim (21), wherein the mandrel (18) is arranged in the steering knuckle (17) in a penetrating mode, the sun gear (2) is sleeved on the mandrel (18) through an auxiliary bearing, a main bearing is sleeved at one end, far away from the steering knuckle (17), of the mandrel (18), and an end cover (13) is arranged at the end portion of the main bearing to seal after the main bearing penetrates through the rim (21); the motor (19) is connected with and drives the motor shaft (1), the motor shaft (1) is biased at one side of the mandrel (18), and the motor shaft (1) penetrates into the steering knuckle (17) and then is in meshing transmission with the sun gear (2), a plurality of planetary gears (6) are meshed with the sun gear (2), each planetary gear (6) is meshed with an inner gear (15) arranged on the inner wall of the steering knuckle (17), one planetary gear (6) is sequentially fixed with the main bearing and the rim (21) through the shaft pin (7), and the main bearing and the rim (21) are driven to rotate.
2. The wheel drive assembly of claim 1, wherein: the main bearing comprises a main bearing outer ring (8), a main bearing inner ring A (9) and a main bearing inner ring B (10), wherein two rows of rolling paths are arranged between the main bearing outer ring (8) and the main bearing inner ring A (9) and used for placing two rows of main bearing rolling bodies (11), and a row of rolling paths are arranged between the main bearing outer ring (8) and the main bearing inner ring B (10) and used for placing one row of main bearing rolling bodies (11).
3. The wheel drive assembly of claim 2, wherein: a sealing assembly (14) is arranged between the main bearing outer ring (8) and the steering knuckle (17).
4. A wheel drive assembly as claimed in claim 3, wherein: the auxiliary bearing comprises an auxiliary bearing outer ring (3) and an auxiliary bearing inner ring (5), and two rows of raceways are arranged between the auxiliary bearing outer ring and the auxiliary bearing inner ring and are used for placing two rows of auxiliary bearing rolling bodies (4).
5. The wheel drive assembly of claim 4, wherein: the main bearing is fixed on a mandrel (18) through a locking bolt (12).
6. The wheel drive assembly of claim 5, wherein: a needle bearing (20) is arranged between the planetary gear (6) and the shaft pin (7).
7. The wheel drive assembly of claim 6, wherein: the internal gear (15) is limited on the knuckle (17) through a clamping ring (16).
8. The wheel drive assembly of claim 7, wherein: the motor (19) is embedded and installed on the steering knuckle (17), and the gear ratio of the motor shaft (1) and the sun gear (2) is 1.5-2.5: 1.
9. the wheel drive assembly of claim 8, wherein: the number of the planetary gears (6) is 3-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322021266.1U CN220349470U (en) | 2023-07-28 | 2023-07-28 | Wheel edge driving assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322021266.1U CN220349470U (en) | 2023-07-28 | 2023-07-28 | Wheel edge driving assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220349470U true CN220349470U (en) | 2024-01-16 |
Family
ID=89503169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322021266.1U Active CN220349470U (en) | 2023-07-28 | 2023-07-28 | Wheel edge driving assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220349470U (en) |
-
2023
- 2023-07-28 CN CN202322021266.1U patent/CN220349470U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |