CN108016495B - Steering trapezoid platformization design method - Google Patents
Steering trapezoid platformization design method Download PDFInfo
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- CN108016495B CN108016495B CN201610971083.8A CN201610971083A CN108016495B CN 108016495 B CN108016495 B CN 108016495B CN 201610971083 A CN201610971083 A CN 201610971083A CN 108016495 B CN108016495 B CN 108016495B
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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
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Abstract
The invention provides a turning trapezoid platform design method, which is used for designing a first turning trapezoid suitable for a first vehicle type vehicle, wherein the first turning trapezoid enables the maximum inner turning angle of the first vehicle type vehicle to be alpha 1, the maximum outer turning angle to be alpha 2, the first turning trapezoid is provided with a first trapezoid arm, a second turning trapezoid suitable for a second vehicle type vehicle is designed, the maximum inner turning angle of the second vehicle type vehicle is alpha 1, the maximum outer turning angle to be alpha 2, the second turning trapezoid is provided with a second trapezoid arm, and the second trapezoid arm is the same as the first trapezoid arm, wherein the first vehicle type vehicle is different from the second vehicle type vehicle, and the first turning trapezoid and the second turning trapezoid share a production platform. The second steering trapezium can be designed according to the first steering trapezium, so that the research and development of the steering trapezium of a new vehicle type can be reduced, the research and development time and cost can be reduced, the design defect can be avoided, and the research and development period of the vehicle can be shortened.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a steering trapezoid platformization design method.
Background
The increasing demand for diversification of automotive products is constantly challenging both in cost and cycle time. The steering system is one of the key systems of the chassis, and the design of a steering trapezoid is directly related to the kinematic performance and the suspension characteristic of the whole vehicle. In the past, when designing an automobile product, only a certain type of automobile is designed and researched, and a steering system of a modified automobile basically keeps unchanged, including a steering trapezoid.
However, when a new vehicle type of a different type is involved, the cost and the period need to be invested again, and the design needs to be redesigned when turning to a trapezoid. If a SUV is designed and finished, and a car needs to be pushed out, the car needs to be researched and developed as a new car type, a steering system and a steering trapezoid of the car need to be redesigned, and the cost and the period are the same as those of the new car type. Therefore, each vehicle type is researched and developed as a new vehicle type, a steering system and a steering trapezoid are redesigned, a large amount of repeated tests and verifications are needed, and manpower and material resources are consumed; and redesigning turns to the trapezium, easily takes place the design defect, and later stage rectification, cost of maintenance increase, in addition, the motorcycle type development cycle is longer, and the product is updated and is updated the speed slower, loses market competition easily.
Disclosure of Invention
In view of this, the present invention is directed to a turning trapezoid flatbed design method, so as to solve the problem that a turning trapezoid of a vehicle of a new vehicle type needs to be redesigned.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a design method for turning trapezoidal plateaus comprises the following steps: designing a first turning trapezoid suitable for a first vehicle type vehicle, wherein the first turning trapezoid enables the maximum inner turning angle of the first vehicle type vehicle to be alpha 1 and the maximum outer turning angle to be alpha 2, and the first turning trapezoid is provided with a first trapezoid arm; designing a second steering trapezoid suitable for a second vehicle type vehicle, wherein the maximum inner steering angle of the second vehicle type vehicle is alpha 1, the maximum outer steering angle is alpha 2, the second steering trapezoid has a second trapezoid arm, and the second trapezoid arm is the same as the first trapezoid arm, wherein the first vehicle type vehicle is different from the second vehicle type vehicle, and the first steering trapezoid and the second steering trapezoid share a production platform.
Further, the first vehicle type vehicle is a sedan.
Further, the first turning trapezoid of the first-model vehicle satisfies the following condition: the ackermann ratio is between 42% and 58% at a wheel angle of 20 ° and between 60% and 70% at a wheel angle of 35 °.
Further, the first and second turning trapezoids respectively include: the steering gear is connected between the two tie rods; the vehicle includes: the connecting line of an upper spherical hinge point of the shock absorber and a spherical hinge point of the swing arm is a kingpin axis, and a perpendicular line from a spherical center of an outer spherical head of the transverse pull rod to the kingpin axis is a trapezoidal arm; the intersection connecting line between the trapezoidal arm and the axis of the kingpin is a kingpin connecting line; the two kingpin axes, the two trapezoidal arms, the two tie rods, the included angles between the two trapezoidal arms and the tie rods, and the included angles between the two trapezoidal arms and the kingpin connecting lines are respectively symmetrical about the centers of the corresponding vehicles.
Further, the center of the connecting line between the two tie rods coincides with the center of the vehicle.
Further, the first and second turning trapezoids respectively include: the steering gear is connected between the two tie rods; the vehicle includes: the connecting line of an upper spherical hinge point of the shock absorber and a spherical hinge point of the swing arm is a kingpin axis, and a perpendicular line from a spherical center of an outer spherical head of the transverse pull rod to the kingpin axis is a trapezoidal arm; the intersection connecting line between the trapezoidal arm and the axis of the kingpin is a kingpin connecting line; when the steering trapezoids of vehicles of the same type are designed, the X point coordinates of the projections of the centers of the outer ball heads between the trapezoid arms and the corresponding tie rods on the chassis of the vehicle are the same.
Further, in vehicles of the same type produced by the production platform, the X-point coordinates of the projections of the centers of the tie rods and the inner ball heads of the steering gears on the chassis of the vehicles are the same.
Further, the Ackerman rates of vehicles of the same type are the same.
Further, the second vehicle type vehicle is an SUV or an MPV.
Compared with the prior art, the steering trapezoid platform design method has the following advantages:
according to the steering trapezoid platform design method provided by the embodiment of the invention, the second steering trapezoid can be designed according to the first steering trapezoid, so that the research and development of the steering trapezoids of a new vehicle type can be reduced, the research and development time and the research and development cost can be reduced, the design defect can be avoided, the research and development period of a vehicle can be shortened, and the market competitiveness of the vehicle can be improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a turning trapezoid.
Description of reference numerals:
a trapezoidal arm 1; a tie rod 2; a diverter 3.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
A turn-trapezoidal plateau design method is described in detail below.
The steering trapezoid platformization design method according to the embodiment of the invention can comprise the following steps: and designing a first steering trapezoid suitable for the vehicle of the first vehicle type, wherein the first steering trapezoid enables the maximum inner steering angle of the vehicle of the first vehicle type to be alpha 1 and the maximum outer steering angle to be alpha 2.
The second steering trapezoid is designed to be suitable for the second vehicle type vehicle, the maximum inner steering angle of the second vehicle type vehicle is alpha 1, the maximum outer steering angle of the second vehicle type vehicle is alpha 2, the first steering trapezoid is provided with a first trapezoid arm, the second steering trapezoid is provided with a second trapezoid arm, and the second trapezoid arm is the same as the first trapezoid arm. Therefore, the included angle between the corresponding trapezoidal arm and the main pin connecting line can be ensured to be unchanged, and the included angle between the corresponding trapezoidal arm and the corresponding transverse pull rod can be ensured to be unchanged.
The first vehicle type vehicle and the second vehicle type vehicle are different, and the first turning trapezoid and the second turning trapezoid share the production platform. That is, on the basis of the first turning trapezoid, on the same production platform, the maximum inner turning angle and the maximum outer turning angle of the second vehicle type vehicle are controlled according to the maximum inner turning angle and the maximum outer turning angle of the first turning trapezoid, so that the second turning trapezoid suitable for the second vehicle type vehicle can be obtained, and thus the second turning trapezoid does not need to be completely redesigned, so that the research and development of the turning trapezoid of a new vehicle type can be reduced, the research and development time and the research and development cost can be reduced, the occurrence of design defects can be avoided, the research and development period of the vehicle can be shortened, and the market competitiveness of the vehicle can be improved.
It should be noted that how to adjust the maximum inner steering angle of the designed vehicle and how to adjust the maximum outer steering angle of the designed vehicle are known and known to those skilled in the art, and will not be described in detail herein.
The first Vehicle type Vehicle is a passenger car, and the second Vehicle type Vehicle may be an SUV (Sport Utility Vehicle) or an MPV (multi-Purpose Vehicle). The production platform can be used for producing the steering trapezoids of vehicles of different types. Therefore, the trapezoidal steering of the car, such as the SUV, the MPV and the like, which are different from the car type can be easily derived on the basis of the trapezoidal steering of the car, so that the universality of the production platform can be improved, the trapezoidal research and development and production difficulty of the steering of the SUV and the MPV can be reduced, and the market competitiveness of the car can be improved.
Alternatively, the first and second turning trapezoids may respectively include: two tie rods 2 and a steering gear 3, the steering gear 3 being connected between the two tie rods 2. The vehicle includes: the ball-point connecting device comprises a shock absorber and a swing arm, wherein a connecting line of an upper ball-joint point of the shock absorber and a ball-joint point of the swing arm is a main pin axis, and a vertical line from an outer ball-head ball center of a transverse pull rod to the main pin axis is a trapezoidal arm 1. The intersection connecting line between the trapezoidal arm 1 and the main pin axis L is a main pin connecting line. The trapezoid arm 1 in the first turning trapezoid is a first trapezoid arm, and the trapezoid arm 1 in the second turning trapezoid is a second trapezoid arm.
Two kingpin axes L, two trapezoidal arms 1, two tie rods 2, an included angle between the two trapezoidal arms 1 and the tie rods 2 (i.e., an included angle at an intersection a), and an included angle between the two trapezoidal arms 1 and a kingpin connecting line (i.e., an included angle at an intersection b) are respectively symmetrical with respect to the center of the corresponding vehicle. Wherein the angle between the two tie rods 2 and the steering gear 3 (i.e., the angle at the intersection point c) is symmetrical with respect to the center of the corresponding vehicle. The tie rod 2 and the steering gear 3 may be connected in an articulated manner. In addition, the Ackermann ratio is required to be kept unchanged, and the lengths of other rod systems can be adjusted correspondingly, so that the adjustment of the steering trapezoids can be reduced, the range of vehicle types which can be covered by the steering trapezoids produced by the production platform can be enlarged, and the research and development time of new vehicle types can be reduced.
Alternatively, the center of the line between the two tie rods 2 may coincide with the center of the vehicle.
However, when designing a steering trapezoid of a vehicle of the same type, the X-point coordinates of the projection of the outer ball center between the trapezoid arm 1 and the corresponding tie rod 2 on the chassis of the vehicle are the same. Therefore, vehicles of the same type can obtain the steering trapezoid capable of being matched with the vehicle after being slightly adjusted or changed in the steering trapezoid, so that the research and development time and the research and development cost of the steering trapezoid of the vehicle can be reduced, the research and development time of a new vehicle can be reduced, and the market competitiveness of the vehicle can be improved. Wherein vehicles of the same type can follow the same chassis system steering system.
Further, in vehicles of the same type produced by the production platform, the X-point coordinates of the projections of the inner ball head centers of the tie rod 2 and the steering gear 3 on the chassis of the vehicle are the same.
Optionally, the ackermann rates of vehicles of the same type are the same. Therefore, the change of the steering trapezoids of vehicles of the same type can be better reduced, and the direct application of the steering trapezoids can be facilitated.
It should be noted that vehicles of the same type may have different types of vehicles, for example, under the type of sedan, there may be a type sedan, B type sedan and C type sedan.
In addition, the steering gear 3 of the vehicle may be a rack and pinion type steering gear. The rack and pinion steering gear has good universality and can be suitable for various vehicles, wherein the rack and pinion steering gear can be hydraulic or mechanical.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A design method for turning a trapezoidal platform is characterized by comprising the following steps:
designing a first turning trapezoid suitable for a first vehicle type vehicle, wherein the first turning trapezoid is provided with a first trapezoid arm, and the first turning trapezoid enables the maximum inner turning angle of the first vehicle type vehicle to be alpha 1 and the maximum outer turning angle to be alpha 2;
designing a second steering trapezoid suitable for a second vehicle type vehicle, wherein the maximum inner steering angle of the second vehicle type vehicle is alpha 1, the maximum outer steering angle of the second vehicle type vehicle is alpha 2, the second steering trapezoid is provided with a second trapezoid arm, the second trapezoid arm is the same as the first trapezoid arm, the lengths of other at least partial rod systems are correspondingly adjusted, the first steering trapezoid and the second steering trapezoid are different, and the first steering trapezoid and the second steering trapezoid share a production platform.
2. The design method for turning trapezoid platformization of claim 1, wherein the vehicle of the first vehicle type is a car.
3. The steering trapezoid flatbed design method as recited in claim 1, wherein the first steering trapezoid of the first vehicle type vehicle satisfies the following condition: the ackermann ratio is between 42% and 58% at a wheel angle of 20 ° and between 60% and 70% at a wheel angle of 35 °.
4. The steered trapezoidal plateau design method of claim 1, wherein the first steered trapezoid and the second steered trapezoid each comprise: the steering gear comprises a steering gear (3) and two tie rods (2), wherein the steering gear (3) is connected between the two tie rods (2);
the vehicle includes: the connecting line of an upper spherical hinge point of the shock absorber and a spherical hinge point of the swing arm is a kingpin axis, and a perpendicular line from a spherical center of an outer spherical head of the transverse pull rod to the kingpin axis is a trapezoidal arm;
the intersection connecting line between the trapezoidal arm and the axis of the kingpin is a kingpin connecting line;
the two kingpin axes, the two trapezoidal arms (1), the two tie rods (2), the included angles between the two trapezoidal arms and the tie rods, and the included angles between the two trapezoidal arms and the kingpin connecting lines are respectively symmetrical about the centers of corresponding vehicles.
5. The design method of the steering trapezoid as recited in claim 4 characterized in that the center of the line between the two tie rods (2) coincides with the center of the vehicle.
6. The steered trapezoidal plateau design method of claim 1, wherein the first steered trapezoid and the second steered trapezoid each comprise: the steering gear comprises a steering gear (3) and two tie rods (2), wherein the steering gear (3) is connected between the two tie rods (2);
the vehicle includes: the connecting line of an upper spherical hinge point of the shock absorber and a spherical hinge point of the swing arm is a kingpin axis, and a perpendicular line from a spherical center of an outer spherical head of the transverse pull rod to the kingpin axis is a trapezoidal arm;
the intersection connecting line between the trapezoidal arm and the axis of the kingpin is a kingpin connecting line;
when designing the steering trapezoids of vehicles of the same type, the X point coordinates of the projections of the centers of the outer ball heads between the trapezoidal arms (1) and the corresponding tie rods (2) on the chassis of the vehicle are the same.
7. The design method for the steering trapezoid platform as recited in claim 6, characterized in that the X-point coordinates of the projections of the inner ball head centers of the tie rod (2) and the steering gear (3) on the chassis of the vehicle are the same in the vehicles of the same type produced by the production platform.
8. The design method for turning trapezoid platformization of claim 6, wherein Ackerman rates of vehicles of the same type are the same.
9. The design method for turning trapezoid platform as claimed in claim 2, wherein the vehicle of the second vehicle type is SUV or MPV.
10. The turning trapezoid flatform design method of any one of claims 1-9, wherein the first turning trapezoid and the second turning trapezoid each comprise: the steering gear (3) is a rack and pinion steering gear.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610971083.8A CN108016495B (en) | 2016-10-28 | 2016-10-28 | Steering trapezoid platformization design method |
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| CN201610971083.8A CN108016495B (en) | 2016-10-28 | 2016-10-28 | Steering trapezoid platformization design method |
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| CN108016495B true CN108016495B (en) | 2020-09-04 |
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| CN111038631A (en) * | 2019-12-24 | 2020-04-21 | 重庆宗申创新技术研究院有限公司 | Trapezoidal steering mechanism of reverse tricycle or four-wheel motorcycle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4413413C1 (en) * | 1994-04-18 | 1995-06-08 | Daimler Benz Ag | Non-tracked vehicle with arbitrarily operable front wheel steering and automatic rear wheel steering |
| CN2504166Y (en) * | 2000-12-20 | 2002-08-07 | 王相军 | Set of automobile steering ladder shape |
| DE10064585A1 (en) * | 2000-12-22 | 2002-09-12 | Woelk Adalbert | Wheel angle control system has drive motor, control unit, sensors, universal joint, eccentric element, adjustment shaft, and slide platform to control, change, adjust and correct all steering-related angles of motor vehicle |
| JP5919900B2 (en) * | 2012-03-08 | 2016-05-18 | 日産自動車株式会社 | Steering device |
| CN203601376U (en) * | 2013-12-03 | 2014-05-21 | 航天新长征电动汽车技术有限公司 | Breaking type steering trapezium structure of electric motor coach |
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- 2016-10-28 CN CN201610971083.8A patent/CN108016495B/en active Active
Non-Patent Citations (2)
| Title |
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| 两厢轿车改款小型SUV的设计方案;张葆华;《汽车工程师》;20111231(第10期);第22-25页 * |
| 汽车理想转向梯形的研究与横拉杆的优化*;张君;《机械设计》;20150331;第32卷(第3期);第42-45页 * |
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