CN111806553A - Independent steering system with steering motor arranged on single longitudinal arm of single longitudinal arm suspension - Google Patents
Independent steering system with steering motor arranged on single longitudinal arm of single longitudinal arm suspension Download PDFInfo
- Publication number
- CN111806553A CN111806553A CN202010496129.1A CN202010496129A CN111806553A CN 111806553 A CN111806553 A CN 111806553A CN 202010496129 A CN202010496129 A CN 202010496129A CN 111806553 A CN111806553 A CN 111806553A
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- CN
- China
- Prior art keywords
- steering
- motor
- arm
- knuckle
- single longitudinal
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- 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.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/30—Arrangement or mounting of transmissions in vehicles the ultimate propulsive elements, e.g. ground wheels, being steerable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
- B62D11/02—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides
- B62D11/04—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of separate power sources
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/18—Steering knuckles; King pins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/20—Links, e.g. track rods
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention relates to an independent steering system with a steering motor arranged on a single longitudinal arm of a single longitudinal arm suspension, belonging to the field of independent driving electric vehicles; the system comprises a single longitudinal arm, a steering motor, a steering knuckle and the like; the steering motor is fixedly connected to the single longitudinal arm through a motor support, and the output torque of the steering motor is transmitted to a steering knuckle driving the wheel assembly to steer through a motor output shaft, a steering rocker arm, a steering pull rod and a steering knuckle arm. The steering knuckle and the steering knuckle transition flange are connected through a pair of angular contact knuckle bearings and corresponding mounting structures thereof to realize a relative rotation function; the invention has compact structure, flexible steering and high integration degree, solves various problems caused by differential steering of the single-trailing-arm independent suspension only by the hub motor, and has important significance for the research and development of the independently driven single-trailing-arm suspension.
Description
Technical Field
The invention belongs to the field of single-trailing-arm independent suspension electric vehicles, and particularly relates to an independent steering system with a steering motor arranged on a single trailing arm of a single-trailing-arm suspension.
Background
The single-trailing-arm independent suspension with the wheel directly driven by the hub motor has a very wide development prospect in the field of electric vehicles, and the structure has the advantages of being simple in structure, saving space in the vehicle, keeping stability of the driving direction and the like. The single trailing arm independent suspension driven by the hub motor generally adopts differential steering, and due to the complexity of the motion, the steering characteristic is difficult to describe accurately, and meanwhile, the tire is easy to sideslip and wear.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the independent steering system with the steering motor arranged on the single longitudinal arm of the single longitudinal arm suspension.
An independent steering system with a steering motor arranged on a single longitudinal arm of a single longitudinal arm suspension comprises a single longitudinal arm (1), a steering motor (2), a motor support (3), a motor output shaft (4), a steering rocker arm (5), a steering connecting rod (6), a steering knuckle arm (7), a steering knuckle transition flange (8), a steering knuckle (9), a hub motor assembly (10) and a wheel assembly (11); a hub motor assembly (10) in a wheel assembly (11) of the steering knuckle (9) is fixedly connected;
the transition flange (8) is hinged with two supports of the steering knuckle (3); the single longitudinal arm (1) is fixedly connected to the transition flange (8); the steering motor (2) is fixedly connected to the single longitudinal arm (1); the steering rocker arm (5) is fixedly connected to the motor output shaft (4); one end of the steering connecting rod (6) is hinged with the steering rocker arm (5), and the other end of the steering connecting rod is hinged with a steering knuckle arm (7) fixedly connected with a steering knuckle (9);
the transition flange (8) is provided with two lugs which are respectively in one-to-one correspondence with the two supports on the steering knuckle (9); one side of the transition flange (8) is fixedly connected with the single longitudinal arm (1) through bolts, and the two support lugs on the other side are hinged with the two supports of the steering knuckle (9) in a one-to-one correspondence mode.
Preferably, the steering link (6) is a variable length link.
Preferably, the steering motor (2) is fixedly connected to the single longitudinal arm (1) through a motor support (3)
Preferably, a through hole is processed on a support of the steering knuckle (9) in a direction parallel to the surface of the steering knuckle (9), and a through hole is also formed in a position corresponding to a support lug of the transition flange (8); the angular contact knuckle bearing (15) is fixed in a through hole of the support, a pin shaft (13) penetrates through a center hole of the angular contact knuckle bearing (15) and a through hole of the support lug, one end of the pin shaft (13) is pressed on an inner ring of the angular contact knuckle bearing (15), and the other end of the pin shaft is fixedly connected to the support lug of the transition flange (8) through the combination of a flat pad (16), an elastic pad (17) and a locking nut (18).
Preferably, the outer end face of the pin (13) is sealed by a top end cap (12).
Preferably, the steering motor (2) is a servo motor, and a planetary reducer is integrated in the servo motor.
Preferably, the hub motor assembly (10) integrates a planetary reduction mechanism and a disc brake.
The invention has the following beneficial effects:
the invention integrates the single-longitudinal-arm independent suspension driven by the hub motor and the steering system with the wire control connecting rod structure, not only keeps the advantage that the single-longitudinal-arm independent suspension has small change of both the camber angle and the wheel track when the wheel jumps, but also overcomes the defects that tires are easy to wear and the like during differential steering, and realizes the integration of the single-longitudinal-arm suspension and the independent steering system.
According to the invention, the steering motor is fixedly connected to the single longitudinal arm, when the wheels jump up and down, the whole steering system synchronously jumps up and down along with the wheels, so that the motion interference between the steering rod system and the single longitudinal arm suspension is avoided, and the steering angle can be large through reasonable arrangement.
The invention designs the knuckle transition flange connected with the knuckle through the angular contact knuckle bearing, and the angular contact knuckle bearing can simultaneously bear radial load and axial load and ensure the flexible rotation between the knuckle and the knuckle transition flange.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a half-sectional view schematically showing a connection structure between a knuckle and a knuckle transition flange according to the present invention.
The steering mechanism comprises a single longitudinal arm 1, a steering motor 2, a motor support 3, a motor output shaft 4, a steering rocker arm 5, a steering connecting rod 6, a steering knuckle arm 7, a transition flange 8, a steering knuckle 9, a hub motor assembly 10, a wheel assembly 11, a top end cover 12, a pin shaft 13, a steel wire retainer ring 14, an angular contact knuckle bearing 15, a flat pad 16, an elastic pad 17 and a locking nut 18.
Detailed Description
The technical solutions provided by the present invention will be described in more detail below with reference to the accompanying drawings, and any technical solution provided by the present invention is replaced or combined with other technical solutions or features provided by the present invention, and for example, the fixing manner is changed into an integrated forming manner or other fixing connection manner, and the hinge manner is changed from a joint bearing to a ball pin connection manner, and other hinge manners are within the scope of the present invention.
As shown in fig. 1, the present invention proposes an independent steering system in which a steering motor is disposed on a single trailing arm of a single trailing arm suspension. The steering mechanism comprises a single longitudinal arm 1, a steering motor 2, a motor support 3, a motor output shaft 4, a steering rocker arm 5, a steering connecting rod 6, a steering knuckle arm 7, a transition flange 8, a steering knuckle 9, a hub motor assembly 10 and a wheel assembly 11. The steering knuckle 9 is fixedly connected with the hub motor assembly 10 through a bolt.
The transition flange 8 is hinged with two supports of the steering knuckle 3; the single longitudinal arm 1 is fixedly connected to the transition flange 8; the steering motor 2 is fixedly connected to the single longitudinal arm 1 through the motor support 3, and no relative movement between the steering motor 2 and the single longitudinal arm 1 is ensured. The motor output shaft 4 of the steering motor 2 is fixedly connected with the steering rocker arm 5 through a spline, and steering torque can be stably transmitted to the steering rocker arm 5. One end of a steering connecting rod 6 is hinged with the steering rocker arm 5 through a rod end joint bearing, the other end of the steering connecting rod 6 is hinged with a steering knuckle arm 7 fixedly connected to a steering knuckle 9 through the rod end joint bearing, the rod end joint bearings at the two ends of the steering connecting rod 6 guarantee installation errors between the steering rocker arm 5 and the steering knuckle arm 7, meanwhile, the steering connecting rod 6 is a connecting rod with variable length, and a certain length can be finely adjusted by adjusting the positions of locking nuts at the two ends. The knuckle arm 7 is fixedly connected with the knuckle 9 through a bolt, and the installation position of the knuckle arm 7 can be determined according to the positions and the lengths of the steering rocker arm 5 and the steering connecting rod 6 so as to ensure that the wheel assembly 11 is vertically and forwardly oriented in the initial state.
As shown in fig. 1 and 2, in order to realize the rotation of the wheel driven by the steering mechanism, the relative rotation between the steering knuckle 9 and the single trailing arm 1 must be realized, and a transition flange 8 is designed for the purpose. The transition flange 8 is provided with two support lugs which are respectively in one-to-one correspondence with the two supports on the steering knuckle 9; one side of the transition flange 8 is fixedly connected with the single trailing arm 1 through bolts, and two support lugs on the other side are hinged with two supports of the steering knuckle 9 in a one-to-one correspondence mode through the angular contact knuckle bearings 15. The connecting structure between the transition flange 8 and the steering knuckle 9 is completely in up-down mirror symmetry, and the upper structure of the connecting structure comprises a top end cover 12, a pin shaft 13, a steel wire retainer ring 14, an angular contact knuckle bearing 15, a flat pad 16, an elastic pad 17 and a lock nut 18. A through hole is processed on the support of the steering knuckle 9 in a direction parallel to the surface of the steering knuckle 9, and a through hole is also formed in the position corresponding to the support lug of the transition flange 8; the angular contact knuckle bearing 15 is fixed in a through hole of the support, the pin shaft 13 penetrates through a center hole of the angular contact knuckle bearing 15 and a through hole of the support lug, one end of the pin shaft 13 is pressed on an inner ring of the angular contact knuckle bearing 15, and the other end of the pin shaft is fixedly connected to the support lug of the transition flange 8 through the combination of the flat pad 16, the elastic pad 17 and the locking nut 18. The pin 13 can rotate in the angular contact knuckle bearing 15, so that a relative rotation is achieved between the transition flange 8 and the knuckle 9. The outer end face of the pin 13 is sealed by the top end cap 12 to shield the internal structure and prevent a layer of stone dust or the like from entering the inside of the angular contact spherical plain bearing 15. The angular contact spherical plain bearing 15 is capable of simultaneously receiving radial and axial forces, and its outer race is mounted on the bearing structure of the knuckle 9 and is restrained from axial play by the wire retainer 14.
The steering motor 2 is a servo motor, in which a planetary reduction gear is integrated, and the planetary reduction gear may be one-stage or multi-stage according to the requirement of the steering torque and considering the permission of the installation space.
The in-wheel motor assembly 10 integrates a planetary reduction mechanism and a disc brake.
The working principle of the independent steering system of the invention is as follows: because the single longitudinal arm 1 is fixed on the vehicle body, and the steering motor 2 and the steering rocker arm 5 are both fixed on the single longitudinal arm 1 and are fixed relative to the vehicle body, when the motor output shaft 4 of the steering motor 2 rotates, the steering rocker arm 5 is driven to swing, and the steering connecting rod 6 is pulled; the steering link 6 drives the knuckle arm 7 and the knuckle 9 fixedly connected therewith to rotate, thereby realizing steering of the wheel assembly 11.
Claims (7)
1. An independent steering system with a steering motor arranged on a single longitudinal arm of a single longitudinal arm suspension is characterized by comprising a single longitudinal arm (1), a steering motor (2), a motor support (3), a motor output shaft (4), a steering rocker arm (5), a steering connecting rod (6), a steering knuckle arm (7), a steering knuckle transition flange (8), a steering knuckle (9), a hub motor assembly (10) and a wheel assembly (11); a hub motor assembly (10) in a wheel assembly (11) of the steering knuckle (9) is fixedly connected;
the transition flange (8) is hinged with two supports of the steering knuckle (3); the single longitudinal arm (1) is fixedly connected to the transition flange (8); the steering motor (2) is fixedly connected to the single longitudinal arm (1); the steering rocker arm (5) is fixedly connected to the motor output shaft (4); one end of the steering connecting rod (6) is hinged with the steering rocker arm (5), and the other end of the steering connecting rod is hinged with a steering knuckle arm (7) fixedly connected with a steering knuckle (9);
the transition flange (8) is provided with two lugs which are respectively in one-to-one correspondence with the two supports on the steering knuckle (9); one side of the transition flange (8) is fixedly connected with the single longitudinal arm (1) through bolts, and the two support lugs on the other side are hinged with the two supports of the steering knuckle (9) in a one-to-one correspondence mode.
2. An independent steering system with steering motor on single trailing arm of single trailing arm suspension according to claim 1 characterized in that the steering linkage (6) is a variable length linkage.
3. The independent steering system with the steering motor arranged on the single trailing arm of the single trailing arm suspension is characterized in that the steering motor (2) is fixedly connected to the single trailing arm (1) through a motor support (3).
4. The independent steering system with the steering motor arranged on the single trailing arm of the single trailing arm suspension according to claim 1 is characterized in that a through hole is formed in a support of the steering knuckle (9) in a direction parallel to the surface of the steering knuckle (9), and a through hole is formed in a position corresponding to a support lug of the transition flange (8); the angular contact knuckle bearing (15) is fixed in a through hole of the support, a pin shaft (13) penetrates through a center hole of the angular contact knuckle bearing (15) and a through hole of the support lug, one end of the pin shaft (13) is pressed on an inner ring of the angular contact knuckle bearing (15), and the other end of the pin shaft is fixedly connected to the support lug of the transition flange (8) through the combination of a flat pad (16), an elastic pad (17) and a locking nut (18).
5. The independent steering system with a steering motor placed on the single trailing arm of the single trailing arm suspension according to claim 1, wherein the outer end face of the pin shaft (13) is sealed by a top end cap (12).
6. Independent steering system with steering motor on single trailing arm of single trailing arm suspension according to claim 1 characterized by that, the steering motor (2) is servo motor with planetary reducer integrated inside.
7. The independent steering system with a steering motor placed on a single trailing arm of a single trailing arm suspension according to claim 1, wherein the in-wheel motor assembly (10) integrates a planetary reduction mechanism and a disc brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010496129.1A CN111806553A (en) | 2020-06-03 | 2020-06-03 | Independent steering system with steering motor arranged on single longitudinal arm of single longitudinal arm suspension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010496129.1A CN111806553A (en) | 2020-06-03 | 2020-06-03 | Independent steering system with steering motor arranged on single longitudinal arm of single longitudinal arm suspension |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111806553A true CN111806553A (en) | 2020-10-23 |
Family
ID=72848459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010496129.1A Pending CN111806553A (en) | 2020-06-03 | 2020-06-03 | Independent steering system with steering motor arranged on single longitudinal arm of single longitudinal arm suspension |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111806553A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202100006014A1 (en) * | 2021-03-15 | 2022-09-15 | First Design 1 S P A | VEHICLE WITH DRIVE AND STEERING WHEELS CARRIED BY LEGS ARTICULATED TO THE STRUCTURE OF THE VEHICLE AND EACH INCORPORATING A PROPULSION AND ORIENTATION SYSTEM FOR THE RESPECTIVE WHEEL |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010054801A1 (en) * | 2000-06-27 | 2001-12-27 | Perello Gian Luigi | Electronically controlled suspension for motor-vehicles |
| DE102004001727A1 (en) * | 2004-01-13 | 2005-08-04 | Deilmann-Haniel Mining Systems Gmbh | Steering linkage for motor vehicle has vertical base plate on which wheel stub axle is pivotally mounted with a level compensator between them |
| CN108791477A (en) * | 2018-06-12 | 2018-11-13 | 太原科技大学 | A kind of distribution four-wheel driving electric vehicle independent steering assembly |
| JP2019171912A (en) * | 2018-03-27 | 2019-10-10 | Ntn株式会社 | Hub unit with steering function, steering system, and vehicle equipped with hub unit with steering function |
-
2020
- 2020-06-03 CN CN202010496129.1A patent/CN111806553A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010054801A1 (en) * | 2000-06-27 | 2001-12-27 | Perello Gian Luigi | Electronically controlled suspension for motor-vehicles |
| DE102004001727A1 (en) * | 2004-01-13 | 2005-08-04 | Deilmann-Haniel Mining Systems Gmbh | Steering linkage for motor vehicle has vertical base plate on which wheel stub axle is pivotally mounted with a level compensator between them |
| JP2019171912A (en) * | 2018-03-27 | 2019-10-10 | Ntn株式会社 | Hub unit with steering function, steering system, and vehicle equipped with hub unit with steering function |
| CN108791477A (en) * | 2018-06-12 | 2018-11-13 | 太原科技大学 | A kind of distribution four-wheel driving electric vehicle independent steering assembly |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202100006014A1 (en) * | 2021-03-15 | 2022-09-15 | First Design 1 S P A | VEHICLE WITH DRIVE AND STEERING WHEELS CARRIED BY LEGS ARTICULATED TO THE STRUCTURE OF THE VEHICLE AND EACH INCORPORATING A PROPULSION AND ORIENTATION SYSTEM FOR THE RESPECTIVE WHEEL |
| WO2022195439A1 (en) * | 2021-03-15 | 2022-09-22 | First Design 1 S.P.A. | Vehicle having driving and steering wheels carried by legs articulated to the vehicle structure, with each leg incorporating a system for driving and orienting the respective wheel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201023 |