CN216975681U - Steering arm shaft with planetary wheel mechanism - Google Patents
Steering arm shaft with planetary wheel mechanism Download PDFInfo
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- CN216975681U CN216975681U CN202123201105.8U CN202123201105U CN216975681U CN 216975681 U CN216975681 U CN 216975681U CN 202123201105 U CN202123201105 U CN 202123201105U CN 216975681 U CN216975681 U CN 216975681U
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- steering arm
- arm shaft
- planet
- planet carrier
- roller bearing
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Abstract
The utility model relates to a steering arm shaft with a planetary gear mechanism, which is characterized in that the steering arm shaft and an auxiliary planet carrier are welded together to jointly form a planet carrier A of the planetary gear mechanism; two ends of the steering arm shaft are respectively radially supported by a left roller bearing and a right roller bearing, and the outer ring of the left roller bearing is pressed together with the shell in an interference fit manner; the outer ring of the right roller bearing is pressed and assembled with the shell in an interference manner; the inner hole of the planet wheel is press-fitted with the outer ring of the needle bearing in an interference manner; the planet gear is arranged on a planet carrier A formed after the steering arm shaft and the auxiliary planet carrier are welded together; the gaskets are assembled on two sides of the planet wheel; the pin shaft penetrates through the gasket and the needle roller bearing and is pressed into the planet carrier A in an interference manner; the inner gear ring is fixed with the shell through a bolt. The boosting force from the motor is input by the sun wheel, is reduced by the planet wheel mechanism and is increased in torque, and is finally output by the output end spline of the steering arm shaft. The device has the advantages of large bearing capacity, high efficiency, compact structure and the like.
Description
Technical Field
The utility model relates to a steering arm shaft with a planetary wheel mechanism, which is used for an automobile electric power steering gear.
Background
In the conventional automobile electric power steering gear, the power of a motor needs to be transmitted through a screw rod, a nut, a steel ball and a bearing and a sector on a steering arm shaft, and the sector also needs to transmit operating force from a steering wheel.
When the electric power steering gear is used on medium and heavy vehicles, the parts bear very large load, so that the volume and the dead weight of the steering gear are both overlarge, the cost is increased, and the arrangement difficulty of the whole vehicle is increased.
Disclosure of Invention
The object of the utility model is to provide a steering arm shaft with a planetary gear mechanism, which separates the transmission paths of the two forces, the operating force from the steering wheel is still transmitted through the sector, and the power assistance from the motor is transmitted through the planetary gear mechanism integrated with the steering arm shaft. The traditional circulating ball steering gear is still kept, but the sector of the steering arm shaft only transmits the operating force from the steering wheel and does not transmit the assisting force from the motor, so that the screw, the nut, the steel ball and the bearing are not subjected to excessive load; the steering arm shaft integrated with the planetary wheel mechanism has the advantages of large bearing capacity, high efficiency, compact structure and the like.
The technical scheme of the utility model is realized as follows: a steering arm shaft with a planetary wheel mechanism comprises a steering arm shaft, an inner gear ring, an auxiliary planet carrier, a planet wheel and a sun wheel; the method is characterized in that: the steering arm shaft and the auxiliary planet carrier are welded together to form a planet carrier A of the planetary gear mechanism; two ends of the steering arm shaft are respectively radially supported by a left roller bearing and a right roller bearing, and the outer ring of the left roller bearing is pressed together with the shell in an interference fit manner; the outer ring of the right roller bearing is pressed together with the shell in an interference fit manner; the inner hole of the planet wheel is press-fitted with the outer ring of the needle bearing in an interference manner; the planet gear is arranged on a planet carrier A formed after the steering arm shaft and the auxiliary planet carrier are welded together; the gaskets are assembled on two sides of the planet wheel; the pin shaft penetrates through the gasket and the needle roller bearing and is pressed into the planet carrier A in an interference manner;
the inner gear ring is fixed with the shell through a bolt; one end of the sun wheel is fixed with the shell through a bearing, and the other end of the sun wheel is matched with an inner hole of the needle bearing.
The steering arm shaft is integrated or split.
The steering arm shaft integrated with the planet wheel mechanism has the advantages that the sector of the steering arm shaft only transmits the operating force from the steering wheel, and the power assisting force from the motor is transmitted by the planet wheel mechanism; the device has the advantages of large bearing capacity, high efficiency, compact structure and the like.
Drawings
Fig. 1 is a cross-sectional view of a steering arm shaft with a planetary gear mechanism of the present invention.
Fig. 2 is an isometric view of a steering arm axle with a planetary wheel mechanism of the present invention.
FIG. 3 is a schematic view of a splined steering arm shaft of the present invention.
FIG. 4 is a schematic view of the welded split steering arm shaft of the present invention.
FIG. 5 is a schematic view of another welded split steering arm shaft of the present invention.
Detailed Description
The utility model is further described with reference to the accompanying drawings: as shown in fig. 1-2, a steering arm shaft with a planetary wheel mechanism is composed of a steering arm shaft 1, an inner gear ring 12, a secondary planet carrier 8, a planet wheel 5 and a sun wheel 11; the method is characterized in that: the steering arm shaft 1 and the auxiliary planet carrier 8 are welded together to form a planet carrier A of the planet gear mechanism; two ends of a steering arm shaft 1 are respectively radially supported by a left roller bearing 3 and a right roller bearing 4, and the outer ring of the left roller bearing 3 is pressed and assembled with a shell 2 in an interference manner; the outer ring of the right roller bearing 4 is pressed and assembled with the shell 2 in an interference fit manner; the inner hole of the planet wheel 5 and the outer ring of the needle bearing 6 are pressed together in an interference fit way; the planet gear 5 is arranged on a planet carrier A formed by welding the steering arm shaft 1 and the auxiliary planet carrier 8 together; the gaskets 7 are assembled on two sides of the planetary wheel 5; the pin shaft 9 penetrates through the gasket 7 and the needle bearing 6 and is pressed into the planet carrier A in an interference manner;
the inner gear ring 12 is fixed with the shell 2 through a bolt 13; one end of the sun gear 11 is fixed with the shell 2 through a bearing 10, and the other end of the sun gear is matched with a needle bearing inner hole 14.
The boosting force from the motor is transmitted to the sun gear 11 through other parts, when the sun gear 11 rotates, the planet gear 5 meshed with the sun gear is driven to rotate, the inner gear ring 2 meshed with the planet gear 5 is fixed on the shell 2 through the bolt 13, therefore, the planet gear 5 rotates and revolves around the axis of the sun gear 11, the revolution of the planet gear 5 drives the planet carrier A to rotate through the pin shaft 9, and therefore, the steering arm shaft 1 rotates along with the rotation and outputs the boosting force through the output end spline.
As shown in fig. 1, the operating force from the steering wheel is transmitted to the steering arm shaft 1 through the sector 15 on the steering arm shaft 1, the assisting force from the motor is input by the sun gear 11, and the planet gear 5 drives the planet carrier a to rotate through the pin shaft 9 via the planet gear mechanism integrated with the steering arm shaft 1, and finally is transmitted to the output spline of the steering arm shaft 1.
As shown in fig. 3, the steering arm shaft 1 is split, and the steering arm shaft 1 is divided into two segments, B1 and B2. B1 and B2 are connected through a spline 17 and welded together by 16, and then are welded together with the secondary planet carrier 8, and jointly form a planet carrier A of the planetary gear mechanism.
Two ends of the steering arm shaft 1 are respectively and radially supported by a left roller bearing 3 and a right roller bearing 4. The outer ring of the left roller bearing 3 is pressed and assembled with the shell 2 in an interference fit manner; the outer ring of the right roller bearing 4 is pressed and installed with the shell 2 in an interference mode.
The inner hole of the planet wheel 5 and the outer ring of the needle bearing 6 are pressed together in an interference fit way; the planet gear 5 is arranged on a planet carrier A formed by welding the steering arm shaft 1 and the auxiliary planet carrier 8 together; the gaskets 7 are assembled on two sides of the planetary wheel 5; the pin shaft 9 penetrates through the gasket 7 and the needle bearing 6 and is pressed into the planet carrier A in an interference mode.
The ring gear 12 is fixed to the housing 2 by bolts 13.
The steering arm shaft 1 and the outer ring of the needle bearing 14 are pressed together in an interference manner; one end of the sun gear 11 is fixed with the shell 2 through a bearing 10, and the other end of the sun gear is matched with a needle bearing inner hole 14.
The boosting force from the motor is transmitted to the sun gear 11 through other parts, when the sun gear 11 rotates, the planet gear 5 meshed with the sun gear is driven to rotate, the inner gear ring 2 meshed with the planet gear 5 is fixed on the shell 2 through the bolt 13, therefore, the planet gear 5 rotates and revolves around the axis of the sun gear 11, the revolution of the planet gear 5 drives the planet carrier A to rotate through the pin shaft 9, and therefore, the steering arm shaft 1 rotates along with the rotation and outputs the boosting force through the output end spline.
As shown in fig. 1, the operating force from the steering wheel is transmitted to the steering arm shaft 1 through the sector 15 on the steering arm shaft 1, the power from the motor is input by the sun gear 11, and the planet gear mechanism integrated with the steering arm shaft 1, i.e. the planet gear 5, drives the planet carrier a to rotate through the pin shaft 9, and finally is transmitted to the output spline of the steering arm shaft 1.
As shown in fig. 4, the steering arm shaft 1 is split, and the steering arm shaft 1 is divided into two sections, B3 and B4. The B3 and the B4 are connected by interference and welded together, and then are welded together with the secondary planet carrier 8 to form a planet carrier A of the planetary gear mechanism.
Two ends of the steering arm shaft 1 are respectively and radially supported by a left roller bearing 3 and a right roller bearing 4. The outer ring of the left roller bearing 3 is pressed and assembled with the shell 2 in an interference fit manner; the outer ring of the right roller bearing 4 is pressed and installed with the shell 2 in an interference mode.
An inner hole of the planet wheel 5 is pressed together with an outer ring of the needle bearing 6 in an interference fit manner; the planet gear 5 is arranged on a planet carrier formed after the steering arm shaft 1 and the auxiliary planet carrier 8 are welded together; the gaskets 7 are assembled on two sides of the planetary wheel 5; the pin shaft 9 penetrates through the gasket 7 and the needle bearing 6 and is pressed into the planet carrier A in an interference mode.
The ring gear 12 is fixed to the housing 2 by bolts 13.
The steering arm shaft 1 and the outer ring of the needle bearing 14 are pressed together in an interference manner; one end of the sun gear 11 is fixed with the shell 2 through a bearing 10, and the other end of the sun gear is matched with a needle bearing inner hole 14.
The boosting force from the motor is transmitted to the sun gear 11 through other parts, when the sun gear 11 rotates, the planet gear 5 meshed with the sun gear is driven to rotate, the inner gear ring 2 meshed with the planet gear 5 is fixed on the shell 2 through the bolt 13, therefore, the planet gear 5 rotates and revolves around the axis of the sun gear 11, the revolution of the planet gear 5 drives the planet carrier A to rotate through the pin shaft 9, and therefore, the steering arm shaft 1 rotates along with the rotation and outputs the boosting force through the output end spline.
As shown in fig. 1, the operating force from the steering wheel is transmitted to the steering arm shaft 1 through the sector 15 on the steering arm shaft 1, the power from the motor is input by the sun gear 11, and the planet gear mechanism integrated with the steering arm shaft 1, i.e. the planet gear 5, drives the planet carrier a to rotate through the pin shaft 9, and finally is transmitted to the output spline of the steering arm shaft 1.
As shown in fig. 5, the steering arm shaft 1 is split, and the steering arm shaft 1 is divided into two sections, B5 and B6. B5 and B6 are connected by interference and welded together 16, and then are welded together with the secondary planet carrier 8, and the two parts together form a planet carrier A of the planetary gear mechanism.
Two ends of the steering arm shaft 1 are respectively and radially supported by a left roller bearing 3 and a right roller bearing 4. The outer ring of the left roller bearing 3 and the shell 2 are pressed together in an interference fit way; the outer ring of the right roller bearing 4 is pressed and installed with the shell 2 in an interference mode.
An inner hole of the planet wheel 5 is pressed together with an outer ring of the needle bearing 6 in an interference fit manner; the planet gear 5 is arranged on a planet carrier formed after the steering arm shaft 1 and the auxiliary planet carrier 8 are welded together; the gaskets 7 are assembled on two sides of the planetary wheel 5; the pin shaft 9 penetrates through the gasket 7 and the needle bearing 6 and is pressed into the planet carrier A in an interference mode.
The ring gear 12 is fixed to the housing 2 by bolts 13.
The steering arm shaft 1 and the outer ring of the needle bearing 14 are pressed together in an interference manner; one end of the sun gear 11 is fixed with the shell 2 through a bearing 10, and the other end of the sun gear is matched with a needle bearing inner hole 14.
The boosting force from the motor is transmitted to the sun gear 11 through other parts, when the sun gear 11 rotates, the planet gear 5 meshed with the sun gear is driven to rotate, the inner gear ring 2 meshed with the planet gear 5 is fixed on the shell 2 through the bolt 13, therefore, the planet gear 5 rotates and revolves around the axis of the sun gear 11, the revolution of the planet gear 5 drives the planet carrier A to rotate through the pin shaft 9, and therefore, the steering arm shaft 1 rotates along with the rotation and outputs the boosting force through the output end spline.
As shown in fig. 1, the operating force from the steering wheel is transmitted to the steering arm shaft 1 through the sector 15 on the steering arm shaft 1, the power from the motor is input by the sun gear 11, and the planet gear mechanism integrated with the steering arm shaft 1, i.e. the planet gear 5, drives the planet carrier a to rotate through the pin shaft 9, and finally is transmitted to the output spline of the steering arm shaft 1.
Claims (2)
1. A steering arm shaft with a planetary wheel mechanism comprises a steering arm shaft, an inner gear ring, an auxiliary planet carrier, a planet wheel and a sun wheel; the method is characterized in that: the steering arm shaft and the auxiliary planet carrier are welded together to form a planet carrier A of the planetary gear mechanism; two ends of the steering arm shaft are respectively radially supported by a left roller bearing and a right roller bearing, and the outer ring of the left roller bearing is pressed together with the shell in an interference fit manner; the outer ring of the right roller bearing is pressed and assembled with the shell in an interference manner; the inner hole of the planet wheel is press-fitted with the outer ring of the needle bearing in an interference manner; the planet gear is arranged on a planet carrier A formed after the steering arm shaft and the auxiliary planet carrier are welded together; the gaskets are assembled on two sides of the planet wheel; the pin shaft penetrates through the gasket and the needle roller bearing and is pressed into the planet carrier A in an interference manner; the inner gear ring is fixed with the shell through a bolt; one end of the sun wheel is fixed with the shell through a bearing, and the other end of the sun wheel is matched with an inner hole of the needle bearing.
2. The steering arm shaft with a planetary gear mechanism according to claim 1, characterized in that the steering arm shaft is one-piece or split.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123201105.8U CN216975681U (en) | 2021-12-20 | 2021-12-20 | Steering arm shaft with planetary wheel mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123201105.8U CN216975681U (en) | 2021-12-20 | 2021-12-20 | Steering arm shaft with planetary wheel mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216975681U true CN216975681U (en) | 2022-07-15 |
Family
ID=82346979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123201105.8U Active CN216975681U (en) | 2021-12-20 | 2021-12-20 | Steering arm shaft with planetary wheel mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216975681U (en) |
-
2021
- 2021-12-20 CN CN202123201105.8U patent/CN216975681U/en active Active
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