CN107364486B - Wheel same-direction reverse steering mechanism - Google Patents
Wheel same-direction reverse steering mechanism Download PDFInfo
- Publication number
- CN107364486B CN107364486B CN201710520219.8A CN201710520219A CN107364486B CN 107364486 B CN107364486 B CN 107364486B CN 201710520219 A CN201710520219 A CN 201710520219A CN 107364486 B CN107364486 B CN 107364486B
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- Prior art keywords
- slide bar
- steering
- gear
- rod
- stepping motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D3/00—Steering gears
- B62D3/02—Steering gears mechanical
- B62D3/12—Steering gears mechanical of rack-and-pinion type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D3/00—Steering gears
- B62D3/02—Steering gears mechanical
- B62D3/04—Steering gears mechanical of worm type
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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
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/06—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
- B62D7/14—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a wheel same-direction reverse steering mechanism which comprises a mechanical steering unit, an electric control unit and an execution unit; wherein the electric control unit comprises a controller ECU; the mechanical steering unit comprises a steering transmission shaft, a gear-rack transmission mechanism and a slide bar guiding mechanism, wherein the steering transmission shaft is connected with a bevel gear in the gear-rack transmission mechanism; one end of the gear rack transmission mechanism is connected with the slide bar guiding mechanism; the execution unit comprises a stepping motor arranged in the slide bar guide mechanism, the stepping motor is connected with the controller ECU, and the stepping motor is also connected with the slide bar guide mechanism. The worm and gear mechanism is adopted, so that the transmission is stable and the noise is low; the mechanical transmission mechanism is used as the main part, so that the bearing working pressure is high, and the reliability is high; the wheels at the two sides can turn in the same direction or in opposite directions, so that the translation and 360-degree turning of the automobile can be realized, and the maneuvering performance of the automobile is improved; the steering mechanism is convenient to arrange and is beneficial to light weight.
Description
Technical Field
The invention relates to a steering mechanism system for an automobile, in particular to a wheel same-direction reverse steering mechanism.
Background
The steering system of an automobile is a key component of the automobile, and not only affects the driving comfort, but also is an important component of the driving operation convenience. The currently used mechanism capable of realizing the same-direction reverse steering of the wheels at two sides is to respectively configure steering motors for the wheels and independently control the steering of each wheel through an electric control motor system. The steering directions of the wheels at the two sides are the same and the same direction is the same direction steering, and the steering directions of the wheels at the two sides are opposite directions.
In the wheel same-direction reverse steering mechanism system used in the market, most of the system is a pure electric motor steering system, the system is convenient to arrange, but because of the frequency of steering operation, the characteristics of large vibration and working pressure exist in the automobile movement process, the reliability of the electric control system is low, so that the electric motor steering system is difficult to adapt to the daily and frequent use requirement of the modern automobile.
The traditional steering mechanism system is inflexible in steering, has large steering radius, can only realize the same-direction steering of wheels at two sides, but cannot meet the requirement of people on higher and higher convenience of vehicle running, and along with the development of automatic driving technology, the steering mechanism system with high efficiency and convenience is urgently needed to realize the steering convenience of the vehicle.
Disclosure of Invention
The invention aims to solve the technical problem of providing a wheel same-direction reverse steering mechanism which ensures steering reliability and can realize vehicle translation and 360-degree steering.
In order to solve the technical problems, the invention adopts the following technical scheme: the wheel same-direction reverse steering mechanism is provided with a mechanical steering unit, an electric control unit and an execution unit;
wherein the electric control unit comprises a controller ECU;
the mechanical steering unit comprises a steering transmission shaft, a gear-rack transmission mechanism and a slide bar guiding mechanism, wherein the steering transmission shaft is connected with a bevel gear in the gear-rack transmission mechanism; one end of the gear rack transmission mechanism is connected with the slide bar guiding mechanism;
the execution unit comprises a stepping motor arranged in the slide bar guide mechanism, the stepping motor is connected with the controller ECU, and the stepping motor is also connected with the slide bar guide mechanism.
The steering transmission shaft drives a helical gear in the gear-rack transmission mechanism to rotate, one end of the gear-rack transmission mechanism is connected with the slide bar guiding mechanism so as to drive the stepping motor to move, and wheels on two sides are subjected to the restriction of the slide bar guiding mechanism to realize the same-direction steering; in addition, the controller ECU outputs signals to the stepping motor, the stepping motor is also connected with the slide bar guiding mechanism, and the slide bar guiding mechanism drives wheels on two sides to realize reverse steering.
According to the technical scheme, the traditional mechanical transmission device is used, the design is compact, the occupied space is relatively small, and the total arrangement of the whole vehicle is facilitated; the gear and rack transmission mechanism is adopted, so that the transmission is stable and the noise is low; the mechanical transmission mechanism is used as the main part, so that the bearing working pressure is high, and the reliability is high; the wheels at the two sides can turn in the same direction or in opposite directions, so that the translation and 360-degree turning of the automobile can be realized, and the maneuvering performance of the automobile is improved; the steering mechanism is convenient to arrange and is beneficial to light weight.
Preferably, the slide bar guiding mechanism further comprises a slide bar assembly, a fixed rotating rod and a slide rail guiding groove; the gear rack transmission mechanism is connected with the fixed rotating rod and drives the fixed rotating rod to rotate, and the fixed rotating rod rotates to drive the stepping motor to move; the slide bar assembly is connected with the slide rail guide groove, and the slide bar assembly is fixedly connected with the stepping motor.
The gear rack transmission mechanism is connected with the fixed rotating rod and drives the fixed rotating rod to rotate, so that the fixed rotating rod rotates around a fixed rotating center, the fixed rotating rod rotates to drive the stepping motor to move, and the sliding rod assembly is horizontally moved left and right due to the limitation of the sliding rail guide groove to drive wheels on two sides to realize the same-direction steering.
Preferably, one end of the rack and pinion transmission mechanism is provided with a ball head pull rod, and the rack and pinion transmission mechanism is connected with the fixed rotating rod through the ball head pull rod.
The ball head pull rod is connected with the fixed rotating rod, so that the fixed rotating rod can rotate around the fixed rotating center, and the directivity is better.
Preferably, the slide bar guiding mechanism further comprises a vehicle body slide rail bracket, and the rotation center of the fixed rotating rod is fixed on the vehicle body slide rail bracket; the fixed rotating rod is connected with the stepping motor through a long round hole.
The vehicle body sliding rail bracket is fixed on the vehicle body, and the rotation center of the fixed rotating rod is fixed on the vehicle body sliding rail bracket, so that the rotation center of the fixed rotating rod is more stable; the fixed rotary rod is connected with the stepping motor through the slotted hole, the fixed rotary rod rotates for the fixed point, and the stepping motor is required to realize translation in the constraint direction, and the fixed rotary rod and the stepping motor can be realized through the connection of the slotted hole.
Preferably, the sliding rod assembly is connected with the sliding rail guide groove through a limit cylinder, so that the sliding rod assembly translates left and right to drive wheels on two sides to realize the same-direction steering.
Preferably, the worm output shaft of the stepping motor is meshed with a worm gear rod to drive the worm gear rod to rotate; the worm gear rod is positioned in the slide bar assembly, the internal threads at the two ends of the worm gear rod are opposite in rotation direction, and meshed tooth pairs are more, so that the transmission is stable, and the noise is low.
Preferably, both ends of the worm gear rod are provided with screw rods, and by adopting the structure, the screw rods at both ends are driven to unscrew due to the fact that the internal threads at both ends of the worm gear rod are opposite in rotation direction, so that the wheels at both ends can be better realized to realize stable and low-noise reverse steering.
Preferably, the steering transmission shaft is connected with a helical gear in the gear-rack transmission mechanism through a universal joint.
Drawings
The contents of each drawing in the specification of the present invention are briefly described as follows:
FIG. 1 is a schematic view of a wheel co-directional reverse steering mechanism;
FIG. 2 is a schematic view of a wheel homodromous reverse steering mechanism at an angle different from that shown in FIG. 1;
FIG. 3 is a schematic cross-sectional view of a slide bar guide;
wherein: 1-a steering drive shaft; 2-a rack and pinion transmission mechanism; 3-a ball head pull rod; 4-a slide bar guiding mechanism; 5-helical gears; 6-universal joints; 7-fixing a rotating rod; 8-a stepper motor; 9-a body slide rail bracket; 10-a slide bar assembly; 11-a limit cylinder; 12-a slide rail guide groove; 13-a slide bar housing; 14-a worm gear rod; 15-a screw rod; 16-screw rod; 17-controller ECU.
Detailed Description
As shown in fig. 1-3, the wheel same-direction reverse steering mechanism is provided with a mechanical steering unit, an electric control unit and an execution unit; wherein the electric control unit comprises a controller ECU 17; the mechanical steering unit comprises a steering transmission shaft 1, a gear-rack transmission mechanism 2 and a slide bar guiding mechanism 4, wherein the steering transmission shaft 1 is connected with a bevel gear 5 in the gear-rack transmission mechanism 2; one end of the gear rack transmission mechanism 2 is connected with the slide bar guiding mechanism 4, as shown in figure 1; the execution unit comprises a stepping motor 8 arranged in the slide bar guiding mechanism 4, the stepping motor 8 is connected with the controller ECU 17, and the stepping motor 8 is also connected with the slide bar guiding mechanism 4.
The slide bar guiding mechanism 4 further comprises a slide bar assembly 10, a fixed rotating rod 7 and a slide bar guiding groove 12; the gear rack transmission mechanism 2 is connected with the fixed rotating rod 7 and drives the fixed rotating rod 7 to rotate, and the fixed rotating rod 7 rotates to drive the stepping motor 8 to move; the sliding rod assembly 10 is connected with the sliding rail guide groove 12, the sliding rod assembly 10 is fixedly connected with the stepping motor 8, one end of the gear rack transmission mechanism 2 is provided with a ball head pull rod 3, the gear rack transmission mechanism 2 is connected with the fixed rotating rod 7 through the ball head pull rod 3, the sliding rod guide mechanism 4 also comprises a vehicle body sliding rail bracket 9, and the rotation center of the fixed rotating rod 7 is fixed on the vehicle body sliding rail bracket 9; the fixed rotating rod 7 is connected with the stepping motor 8 through a slotted hole, and the sliding rod assembly 10 is connected with the sliding rail guide groove 12 through a limit cylinder 11.
The slide bar assembly 10 also comprises a slide bar shell 13, screw rods 15 and 16 which are arranged at two ends inside the slide bar shell 13, and a worm gear rod 14; the worm extension shaft of the stepping motor 8 is meshed with the worm gear rod 14 to drive the worm gear rod 14 to rotate; the worm gear rod 14 is located in the slide bar assembly 10, internal threads at two ends of the worm gear rod 14 are opposite in rotation direction, and screw rods 15 and 16 are arranged at two ends of the worm gear rod 14, as shown in fig. 3.
The steering transmission shaft 1 is connected with a helical gear 5 in the gear-rack transmission mechanism 2 through a universal joint 6.
The specific use is as follows: the body rail bracket 9 is fixed to the body. The rotation center of the fixed rotating rod 7 is fixed on the vehicle body sliding rail bracket 9 and is connected with the stepping motor 8 through a long round hole. The stepper motor 8 is fixedly connected with the slide bar assembly 10. The slide bar assembly 10 is connected with the slide rail guide groove 12 through the limit cylinder 11. The two ends of the worm gear rod 14 in the slide bar assembly 4 are of internal thread structures, the threads are opposite in rotation direction, and the worm gear rod is meshed with the screw rods 15 and 16.
The control method based on the two-side wheel same-direction reverse steering mechanism comprises the following steps:
the same-direction steering control method comprises the following steps: the steering transmission shaft 1 drives the helical gear 5 of the gear-rack transmission mechanism 2 to rotate, and drives the fixed rotating rod 7 to rotate around the fixed rotating center through the gear-rack transmission mechanism 2 and the ball head pull rod 3 connected with the same. Because the stepping motor 8 is connected with one end of the fixed rotating rod 7 through the long round hole, the fixed rotating rod 7 rotates to drive the stepping motor 8 to move. The slide bar assembly 10 is fixedly connected with the stepping motor 8, and the slide bar assembly 10 moves horizontally due to the limitation of the slide rail guide groove 12, so that wheels on two sides are driven to realize the same-direction steering.
The reverse steering control method comprises the following steps: the controller ECU 17 outputs signals to the stepping motor 8, and the worm output shaft of the stepping motor 8 stretches out and is meshed with the worm gear rod 14 to drive the worm gear rod 14 to rotate, and as the internal threads at the two ends of the worm gear rod 14 rotate oppositely, screw rods 15 and 16 at the two ends are driven to rotate out, so that the wheels at the two sides are reversely turned.
While the invention has been described above with reference to the accompanying drawings, it will be apparent that the invention is not limited to the above embodiments, but is capable of direct application and other applications without any substantial improvement of the method concept and technical solution of the invention, as long as the invention is applied to various insubstantial improvements, and the invention is within the scope of the invention.
Claims (5)
1. The wheel same-direction reverse steering mechanism is characterized by comprising a mechanical steering unit, an electric control unit and an execution unit;
wherein the electric control unit comprises a controller ECU;
the mechanical steering unit comprises a steering transmission shaft, a gear-rack transmission mechanism and a slide bar guiding mechanism, wherein the steering transmission shaft is connected with a bevel gear in the gear-rack transmission mechanism; one end of the gear rack transmission mechanism is connected with the slide bar guiding mechanism;
the execution unit comprises a stepping motor arranged in the slide bar guide mechanism, the stepping motor is connected with the controller ECU, and the stepping motor is also connected with the slide bar guide mechanism;
the slide bar guiding mechanism further comprises a slide bar assembly, a fixed rotating rod and a slide rail guiding groove; the gear rack transmission mechanism is connected with the fixed rotating rod and drives the fixed rotating rod to rotate, and the fixed rotating rod rotates to drive the stepping motor to move; the sliding rod assembly is connected with the sliding rail guide groove, and the sliding rod assembly is fixedly connected with the stepping motor;
one end of the gear rack transmission mechanism is provided with a ball head pull rod, and the gear rack transmission mechanism is connected with the fixed rotating rod through the ball head pull rod;
the worm output shaft of the stepping motor is meshed with the worm gear rod to drive the worm gear rod to rotate; the worm gear rod is positioned in the slide bar assembly, and internal threads at two ends of the worm gear rod are opposite in rotation direction.
2. The wheel co-directional reverse steering mechanism according to claim 1, wherein the slide bar guiding mechanism further comprises a body slide rail bracket, and the rotation center of the fixed rotating rod is fixed on the body slide rail bracket; the fixed rotating rod is connected with the stepping motor through a long round hole.
3. The wheel co-directional reverse steering mechanism according to claim 2, wherein the slide bar assembly is connected to the slide rail guide groove through a limit cylinder.
4. The wheel co-directional reverse steering mechanism according to claim 1, wherein both ends of the worm wheel rod are provided with screw rods.
5. The wheel co-directional reverse steering mechanism according to any one of claims 1 to 4, wherein the steering drive shaft is connected to a helical gear in the rack and pinion drive mechanism by a universal joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710520219.8A CN107364486B (en) | 2017-06-30 | 2017-06-30 | Wheel same-direction reverse steering mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710520219.8A CN107364486B (en) | 2017-06-30 | 2017-06-30 | Wheel same-direction reverse steering mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107364486A CN107364486A (en) | 2017-11-21 |
| CN107364486B true CN107364486B (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710520219.8A Active CN107364486B (en) | 2017-06-30 | 2017-06-30 | Wheel same-direction reverse steering mechanism |
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| CN (1) | CN107364486B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108423042B (en) * | 2018-05-29 | 2023-05-16 | 西华大学 | Steering control device of mobile trolley for field measurement |
| CN112896292A (en) * | 2021-04-16 | 2021-06-04 | 江苏华梓车业有限公司 | Electric automobile with steering balance function |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298577C (en) * | 2004-11-10 | 2007-02-07 | 吴冠豪 | Oil-electricity general serviced automobile |
| CN201062037Y (en) * | 2007-04-07 | 2008-05-21 | 袁植柏 | Automobile deflection wheeled type braking arrangement |
| CN101298257B (en) * | 2008-01-04 | 2011-09-14 | 苏保国 | Electric automobile transversal travel and clockwise counter-clockwise rotation body steering mechanical drive technology |
| KR101675801B1 (en) * | 2012-02-24 | 2016-11-15 | 한화테크윈 주식회사 | Steering device for vehicle capable of cycle steering |
| JP6351944B2 (en) * | 2013-09-26 | 2018-07-04 | Ntn株式会社 | Steering device |
| JP2015071363A (en) * | 2013-10-03 | 2015-04-16 | Ntn株式会社 | Steering device |
| JP6452944B2 (en) * | 2013-11-18 | 2019-01-16 | Ntn株式会社 | Steering device |
| JP2015217910A (en) * | 2014-05-21 | 2015-12-07 | Ntn株式会社 | Control method of steering device and vehicle |
| KR20160111065A (en) * | 2015-03-16 | 2016-09-26 | 주식회사 만도 | Electric Power Steering Apparatus |
| JP2017007575A (en) * | 2015-06-24 | 2017-01-12 | Ntn株式会社 | Steering device, and vehicle having steering device |
| CN205311696U (en) * | 2016-01-07 | 2016-06-15 | 西南交通大学 | Full steering mechanism of electric motor car |
| CN207015416U (en) * | 2017-06-30 | 2018-02-16 | 江苏速度智能科技有限公司 | Wheel counter-steering mechanism in the same direction |
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- 2017-06-30 CN CN201710520219.8A patent/CN107364486B/en active Active
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| CN107364486A (en) | 2017-11-21 |
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Effective date of registration: 20180830 Address after: 210008 No. 7, Tongren West Street, Xuanwu District, Nanjing, Jiangsu. Applicant after: Jiangsu wisdom Automobile Research Institute Co.,Ltd. Address before: 210000 8 -22, 699 Xuanwu Road, Xuanwu District, Nanjing, Jiangsu. Applicant before: JIANGSU SPEED INTELLIGENT TECHNOLOGY Co.,Ltd. |
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