Design method of a wheeled vehicle with no suspension structure driving system
A wheeled and vehicle technology, which is applied to vehicle components, axles, wheels, etc., can solve the problems of large impact of wiring layout, large area occupied by the vehicle body, and limited vehicle driving performance, so as to increase the effective space of the vehicle body and facilitate The effect of optimized design and easy integration and layout
Active Publication Date: 2020-07-28
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
However, the suspension structure has a certain cost and occupies a large area of the vehicle body. Especially in electric vehicles, it has a great impact on the wiring layout, which is not conducive to the realization of integrated control and lightweight of the vehicle; The grip of tires under dynamic load is unfavorable; and the ride comfort evaluation index for vehicles with suspension and pneumatic tire wheels needs to be comprehensively considered from the three aspects of vehicle body acceleration, wheel dynamic load and suspension dynamic deflection, which greatly reduces the vehicle The efficiency of the driving performance optimization design limits the improvement of the driving performance of the vehicle
Method used
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[0032] Such as figure 1 As shown, the frame cancels the traditional suspension structure, and directly installs ultra-high-performance wheels with multiple buffer and shock-absorbing structures to achieve the buffer and shock-absorbing function. Preferably, such as a catenary-spring-shock absorber composite mechanical elastic wheel, the ultra-high-performance wheel has multiple buffer and shock-absorbing structural characteristics, and can replace the suspension structure in terms of overall functional characteristics.
[0033] Such as figure 2 As shown, the traditional vehicle running system is designed with a suspension structure and pneumatic tire wheels.
[0034] Such as image 3 As shown, a conventional vehicle is usually simplified to a two-degree-of-freedom model:
[0035]
[0036] In the formula, m 1 - mass under suspension, m 2 - hanging mass, x 1 - vertical displacement of mass under the suspension, x 2 -Vertical displacement of mass on the suspension, k-s...
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The invention discloses a design method of a running system wheeled vehicle without suspension structure. On the basis of an original traditional wheeled vehicle running gear, the suspension structureis eliminated; through characteristics of multiple buffering vibration absorbing structures, the performances of wheels are improved so that the wheels realize a functional action of an original traditional wheeled vehicle suspension structure. Compared with an original traditional wheeled vehicle with the suspension structure, the running system wheeled vehicle without the suspension structure has the advantages that a vehicle body space can be saved while the running smoothness of the vehicle is guaranteed, the vehicle manufacturing cost can be reduced, the dynamical model of the vehicle can be simplified, the smoothness index of the vehicle can be reduced, and the optimized design efficiency of the vehicle can be enhanced.
Description
technical field [0001] The invention belongs to the technical field of vehicle design, and in particular relates to a design method for a wheeled vehicle with no suspension structure driving system. Background technique [0002] At present, the traditional vehicle running system is designed with a suspension structure. Automobile suspension is a general term for all transmission power connection devices between the frame and the axle. The automobile suspension elastically connects the axle and the vehicle body to alleviate the impact caused by the uneven road surface during driving, so as to ensure the comfort of the ride and the integrity of the cargo; quickly reduce the vibration caused by the elastic system, and transmit the vertical, longitudinal and lateral reaction forces And its torque; and play a guiding role, so that the wheels move relative to the body according to a certain trajectory. Suspension generally consists of elastic elements, guides, shock absorbers an...
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IPC IPC(8): B60B9/00B60B9/02B60B35/00B62D65/00G06F30/15
CPCB60B9/00B60B35/00B62D65/00G06F30/15Y02T90/00
Inventor 赵又群王秋伟张桂玉徐瀚邓耀骥
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS