CN113771944A - Chassis structure of electric motor coach and steering method - Google Patents
Chassis structure of electric motor coach and steering method Download PDFInfo
- Publication number
- CN113771944A CN113771944A CN202111010665.7A CN202111010665A CN113771944A CN 113771944 A CN113771944 A CN 113771944A CN 202111010665 A CN202111010665 A CN 202111010665A CN 113771944 A CN113771944 A CN 113771944A
- Authority
- CN
- China
- Prior art keywords
- axle
- wheels
- electric motor
- motor coach
- steering
- Prior art date
- 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
-
- 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
- B62D7/15—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 characterised by means varying the ratio between the steering angles of the steered wheels
- B62D7/1509—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 characterised by means varying the ratio between the steering angles of the steered wheels with different steering modes, e.g. crab-steering, or steering specially adapted for reversing of the vehicle
Abstract
The invention discloses a chassis structure of an electric motor coach and a steering method, comprising the following steps: a frame; a first axle disposed at a front end portion of the frame, the first axle comprising: the first steering rod is connected with wheels on the first axle and used for driving the wheels on the first axle to steer; the second axle and the third axle are arranged at the tail end parts of the frame, the third axle is arranged on one side of the second axle close to the first axle, and the second axle comprises a second axle and a second steering rod, and the second steering rod is connected with wheels on the second axle and is used for driving the wheels on the second axle to steer. This application adds the second axle as follow-up axle on [ electric ] motor coach's frame for supplementary steering improves [ electric ] motor coach's stability of going and flexibility.
Description
Technical Field
The invention relates to the technical field of electric motor coaches, in particular to a chassis structure of an electric motor coach and a steering method.
Background
Compared with fuel vehicles, new energy vehicles such as electric motor cars and the like have the advantages that a large number of battery packs are added to provide energy, so that the weight of the whole vehicle is greatly increased, and the electric motor cars are heavier. When the vehicle runs at a low speed, the turning radius is large and the vehicle is not flexible; when the vehicle is traveling at a high speed, the center of gravity is high, and the vehicle is unstable.
Disclosure of Invention
In view of the above-mentioned shortcomings in the prior art, the present invention provides a chassis structure of an electric motor coach and a steering method thereof, which are used for solving the above-mentioned problems.
The technical scheme adopted by the invention for solving the technical problems is a chassis structure of an electric motor coach, which comprises the following components:
a frame;
a first axle disposed at a front end portion of the frame, the first axle comprising: the first steering rod is connected with wheels on the first axle and used for driving the wheels on the first axle to steer;
the second axle and the third axle are arranged at the tail end parts of the frame, the third axle is arranged on one side of the second axle close to the first axle, and the second axle comprises a second axle and a second steering rod, and the second steering rod is connected with wheels on the second axle and is used for driving the wheels on the second axle to steer.
Further, the first axle, the second axle and the third axle are all provided with a shock absorption air bag.
Furthermore, two ends of the first axle and the second axle are respectively provided with a wheel, and two ends of the third axle are respectively provided with two wheels.
Further, the length of the chassis structure is 12.7 meters.
Further, the invention also discloses a steering method of the electric motor coach, which is applied to the chassis structure of the electric motor coach and comprises the following steps:
s1, driving wheels on the first axle to steer;
s2, collecting the speed of the electric motor coach in real time, comparing the current speed with a preset speed value, and executing the step S3 when the current speed is judged to be smaller than the preset speed value; when it is determined that the current vehicle speed is greater than or equal to the preset vehicle speed value, performing step S4;
s3, driving the wheels on the second axle to turn, wherein the turning direction of the wheels on the second axle is opposite to the turning direction of the wheels on the first axle;
and S4, driving the wheels on the second axle to turn, wherein the turning direction of the wheels on the second axle is the same as the turning direction of the wheels on the first axle.
Further, the ratio of the steering angle of the wheels on the second axle to the steering angle of the wheels on the first axle is X;
when the current speed of the electric motor coach is larger than or equal to the preset speed value, X is increased along with the increase of the current speed.
Further, still include: and acquiring the steering angle Y of the wheels on the first axle in real time, and enabling the X to increase along with the increase of the Y.
Further, in step S3, 0< X <0.3 is set.
Further, in step S3, the maximum rotation angle of the wheel on the first axle is 38 °, and the maximum rotation angle of the wheel on the second axle is 11 °.
Compared with the prior art, the invention has at least the following beneficial effects:
1. and a second axle is additionally arranged on the frame of the electric motor coach and used for assisting in steering, so that the running stability and flexibility of the electric motor coach are improved.
2. When the speed of the electric motor coach is low, the steering direction of the second axle is opposite to that of the first axle, so that the turning radius of the electric motor coach is reduced, and the flexibility of the electric motor coach is improved; when the speed of the electric motor coach is high, the steering direction of the second axle is the same as that of the first axle.
3. The steering angle of the second axle is increased along with the increase of the steering angle of the first axle of the vehicle speed, and the increasing proportion is larger along with the increase of the current vehicle speed, so that the vehicle can keep good stability and controllability under different vehicle speeds along with the speed gain.
4. The steering angle of the second axle is increased along with the increase of the steering angle of the first axle of the vehicle speed, and the increasing proportion of the steering angle of the first axle is larger along with the increase of the steering angle of the first axle, so that the vehicle can keep good controllability and stability under the condition of any steering angle.
Drawings
FIG. 1 is a schematic view of a chassis structure of an electric motor coach in the embodiment;
FIG. 2 is a schematic structural diagram of a first axle in the embodiment;
FIG. 3 is a schematic structural diagram of a second axle in the embodiment;
in the figure:
100. a frame;
200. a first axle; 210. a first axle; 220. a first steering column;
300. a second axle; 310. a second axle; 320. a second steering rod;
400. and a third axle.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Referring to fig. 1 to 3, the present invention discloses a chassis structure of an electric motor coach, including:
a frame 100;
a first axle 200 provided at a front end portion of the frame 100, the first axle 200 including: a first axle 210 and a first steering rod 220, wherein the first steering rod 220 is connected to the wheels of the first axle 210 for driving the wheels of the first axle 210 to steer;
a second axle 300 and a third axle 400 disposed at the end portions of the frame 100, the third axle 400 being located at a side of the second axle 300 close to the first axle 200, the second axle 300 including a second axle 310 and a second steering rod 320, the second steering rod 320 being connected to wheels of the second axle 310 for driving the wheels of the second axle 310 to steer.
Specifically, the first axle 200 is a front axle of the electric motor coach and is used for leading steering; the second axle 300 is a follow-up axle of the electric motor coach and is used for assisting steering; the third axle 400 is a drive axle of the electric motor coach and is used for driving the electric motor coach to run. In this embodiment, a second axle 300 is additionally provided on the frame 100 of the electric motor coach for assisting steering, so as to improve the driving stability and flexibility of the electric motor coach.
Further, shock-absorbing air bags are disposed on the first axle 200, the second axle 300 and the third axle 400.
Further, two ends of the first axle 200 and the second axle 300 are respectively provided with one wheel, and two ends of the third axle 400 are respectively provided with two wheels.
The first axle 200 and the second axle 300 are provided with the same number of wheels, so that the second axle 300 can better assist steering when assisting steering of the first axle 200.
Further, the length of the chassis structure is 12.7 meters.
Further, the invention also discloses a steering method of the electric motor coach, which is applied to the chassis structure of the electric motor coach and comprises the following steps:
s1, driving wheels on the first axle 200 to steer;
s2, collecting the speed of the electric motor coach in real time, comparing the current speed with a preset speed value, and executing the step S3 when the current speed is judged to be smaller than the preset speed value; when it is determined that the current vehicle speed is greater than or equal to the preset vehicle speed value, performing step S4;
s3, driving wheels on the second axle 300 to steer, and enabling the steering direction of the wheels to be opposite to the steering direction of the wheels on the first axle 200;
and S4, driving the wheels on the second axle 300 to steer, and enabling the steering direction of the wheels to be the same as the steering direction of the wheels on the first axle 200.
Specifically, when the speed of the electric motor coach is low, the steering direction of the second axle 300 is opposite to the steering direction of the first axle 200, thereby reducing the turning radius of the electric motor coach to improve the flexibility thereof. When the speed of the electric motor coach is high, the steering direction of the second axle 300 is the same as that of the first axle 200, so that the stability and the controllability during high-speed running are improved.
It should be noted that the sequence of steps S1-S4 is logical, not temporal, and the above steps occur simultaneously during actual driving.
In the embodiment, the preset vehicle speed value can be any value in 20-45km/h according to the use requirement.
Further, the ratio of the steering angle of the wheels on the second axle 300 to the steering angle of the wheels on the first axle 200 is X;
when the current speed of the electric motor coach is larger than or equal to the preset speed value, X is increased along with the increase of the current speed.
Specifically, the steering angle of the second axle 300 increases with the increase of the steering angle of the first axle 200, and the increase ratio is larger as the current vehicle speed is larger, so that the vehicle can maintain good stability and controllability at different vehicle speeds with the speed gain.
Further, still include: the steering angle Y of the wheels on the first axle 200 is collected in real time, and X is increased as Y increases.
Specifically, the steering angle of the second axle 300 increases with the increase of the steering angle of the first axle 200, and the increasing proportion of the steering angle of the first axle 200 increases, so that the vehicle can maintain good maneuverability and stability under any steering angle.
Further, in step S3, 0< X <0.3 is set.
Further, in step S3, the maximum rotation angle of the wheels on the first axle 200 is 38 °, and the maximum rotation angle of the wheels on the second axle 300 is 11 °.
It should be noted that all the parameters related to the present invention are designed for the electric motor coach with a vehicle length of 12.7 meters.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Moreover, descriptions of the present invention as relating to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Claims (9)
1. A chassis structure of an electric motor coach is characterized by comprising:
a frame;
a first axle disposed at a front end portion of the frame, the first axle comprising: the first steering rod is connected with wheels on the first axle and used for driving the wheels on the first axle to steer;
the second axle and the third axle are arranged at the tail end parts of the frame, the third axle is arranged on one side of the second axle close to the first axle, and the second axle comprises a second axle and a second steering rod, and the second steering rod is connected with wheels on the second axle and is used for driving the wheels on the second axle to steer.
2. The chassis structure of the electric motor coach as claimed in claim 1, wherein damping air bags are arranged on the first axle, the second axle and the third axle.
3. The chassis structure of an electric motor coach as claimed in claim 1, wherein two wheels are respectively arranged at two ends of the first axle and the second axle, and two wheels are respectively arranged at two ends of the third axle.
4. The chassis structure of an electric motor coach as claimed in claim 1, wherein the length of the chassis structure is 12.7 m.
5. A steering method of an electric motor coach applied to a chassis structure of an electric motor coach as set forth in any one of claims 1 to 4, comprising the steps of:
s1, driving wheels on the first axle to steer;
s2, collecting the speed of the electric motor coach in real time, comparing the current speed with a preset speed value, and executing the step S3 when the current speed is judged to be smaller than the preset speed value; when it is determined that the current vehicle speed is greater than or equal to the preset vehicle speed value, performing step S4;
s3, driving the wheels on the second axle to turn, wherein the turning direction of the wheels on the second axle is opposite to the turning direction of the wheels on the first axle;
and S4, driving the wheels on the second axle to turn, wherein the turning direction of the wheels on the second axle is the same as the turning direction of the wheels on the first axle.
6. The steering method for an electric motor coach as claimed in claim 5, wherein the ratio of the steering angle of the wheels on the second axle to the steering angle of the wheels on the first axle is X;
when the current speed of the electric motor coach is larger than or equal to the preset speed value, X is increased along with the increase of the current speed.
7. The steering method for an electric motor coach as claimed in claim 6, further comprising: and acquiring the steering angle Y of the wheels on the first axle in real time, and enabling the X to increase along with the increase of the Y.
8. The steering method for an electric motor coach according to claim 6, wherein 0< X <0.3 is set in step S3.
9. The steering method for an electric motor coach as claimed in claim 8, wherein in step S3, the maximum rotation angle of the wheels on the first axle is 38 ° and the maximum rotation angle of the wheels on the second axle is 11 °.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111010665.7A CN113771944A (en) | 2021-08-31 | 2021-08-31 | Chassis structure of electric motor coach and steering method |
| PCT/CN2021/126141 WO2023029177A1 (en) | 2021-08-31 | 2021-10-25 | Chassis structure of electric bus and steering method |
| PCT/CN2022/106955 WO2023029797A1 (en) | 2021-08-31 | 2022-07-21 | Chassis structure of electric bus, and steering method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111010665.7A CN113771944A (en) | 2021-08-31 | 2021-08-31 | Chassis structure of electric motor coach and steering method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113771944A true CN113771944A (en) | 2021-12-10 |
Family
ID=78840243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111010665.7A Pending CN113771944A (en) | 2021-08-31 | 2021-08-31 | Chassis structure of electric motor coach and steering method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113771944A (en) |
| WO (2) | WO2023029177A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023029797A1 (en) * | 2021-08-31 | 2023-03-09 | 浙江中车电车有限公司 | Chassis structure of electric bus, and steering method |
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| US20070051554A1 (en) * | 2005-08-11 | 2007-03-08 | Deere & Company, A Delaware Corporation | Differential steering assist system for utility vehicle |
| CN102152808A (en) * | 2011-03-07 | 2011-08-17 | 武汉欧塔科汽车设计研究院有限公司 | Front and rear axle steering system for numerical control mechanical transmission |
| CN103057621A (en) * | 2012-12-27 | 2013-04-24 | 三一重工股份有限公司 | Chassis and crane |
| CN204488459U (en) * | 2014-12-31 | 2015-07-22 | 长春孔辉汽车科技股份有限公司 | Multiaxis acoustic filed pure electric automobile seriation platform |
| CN207860255U (en) * | 2016-08-12 | 2018-09-14 | 郑州工业应用技术学院 | A kind of first five axle steering system of nine axle steers vehicle |
| CN211001542U (en) * | 2019-12-03 | 2020-07-14 | 重庆西晶源流体技术有限公司 | Auxiliary steering device of multifunctional vehicle |
| CN112319602A (en) * | 2020-11-16 | 2021-02-05 | 吉林大学 | 6X4 electric automobile chassis system capable of achieving all-wheel steering and steering control method |
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| JP3761056B2 (en) * | 1999-02-02 | 2006-03-29 | 日野自動車株式会社 | Rear front wheel steering control device for rear biaxial vehicle |
| CN101450676A (en) * | 2008-12-25 | 2009-06-10 | 武汉创想未来汽车设计开发有限公司 | Mechanical transfer steering system for front and rear axles |
| CN102372029A (en) * | 2011-07-23 | 2012-03-14 | 青岛理工大学 | Electric control all-wheel steering system for multi-axle vehicle |
| CN105584526B (en) * | 2016-03-09 | 2018-03-20 | 郑州精益达汽车零部件有限公司 | Eight four bridge car steering of wheel |
| KR102311670B1 (en) * | 2017-05-01 | 2021-10-13 | 현대자동차주식회사 | Roll control system of tag axle type vehicle |
| CN107878170B (en) * | 2017-11-07 | 2019-09-17 | 重庆大学 | Mechanical and automatically controlled steering is concentrated and the combined vehicle chassis architecture of independent electric drive |
| CN209395535U (en) * | 2018-12-19 | 2019-09-17 | 中国重汽集团济南动力有限公司 | It is promoted after one kind and turns to central axle loading chassis |
| CN113771944A (en) * | 2021-08-31 | 2021-12-10 | 浙江中车电车有限公司 | Chassis structure of electric motor coach and steering method |
-
2021
- 2021-08-31 CN CN202111010665.7A patent/CN113771944A/en active Pending
- 2021-10-25 WO PCT/CN2021/126141 patent/WO2023029177A1/en unknown
-
2022
- 2022-07-21 WO PCT/CN2022/106955 patent/WO2023029797A1/en unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070051554A1 (en) * | 2005-08-11 | 2007-03-08 | Deere & Company, A Delaware Corporation | Differential steering assist system for utility vehicle |
| CN102152808A (en) * | 2011-03-07 | 2011-08-17 | 武汉欧塔科汽车设计研究院有限公司 | Front and rear axle steering system for numerical control mechanical transmission |
| CN103057621A (en) * | 2012-12-27 | 2013-04-24 | 三一重工股份有限公司 | Chassis and crane |
| CN204488459U (en) * | 2014-12-31 | 2015-07-22 | 长春孔辉汽车科技股份有限公司 | Multiaxis acoustic filed pure electric automobile seriation platform |
| CN207860255U (en) * | 2016-08-12 | 2018-09-14 | 郑州工业应用技术学院 | A kind of first five axle steering system of nine axle steers vehicle |
| CN211001542U (en) * | 2019-12-03 | 2020-07-14 | 重庆西晶源流体技术有限公司 | Auxiliary steering device of multifunctional vehicle |
| CN112319602A (en) * | 2020-11-16 | 2021-02-05 | 吉林大学 | 6X4 electric automobile chassis system capable of achieving all-wheel steering and steering control method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023029797A1 (en) * | 2021-08-31 | 2023-03-09 | 浙江中车电车有限公司 | Chassis structure of electric bus, and steering method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023029177A1 (en) | 2023-03-09 |
| WO2023029797A1 (en) | 2023-03-09 |
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