Vehicle steering roll transmission mechanism and active roll vehicle using same

Abstract

The invention belongs to the technical field of vehicle chassis, discloses a vehicle steering roll transmission mechanism and an active roll vehicle using the same, and particularly relates to a vehicle body active roll control technology under the vehicle steering condition. The vehicle steering side-tipping transmission mechanism comprises a vehicle body, lower swing rods, a steering knuckle spindle and upper swing rods which are sequentially and rotationally connected, side-tipping kinematic chains are symmetrically arranged on a support, the support is connected with the lower swing rods on the two sides through two shock absorbers, and a steering kinematic chain is formed by steering arms, connecting rods, steering knuckles and wheels; vehicle steering and vehicle body roll movement are independent, in the vehicle body horizontal plane, a steering arm rotates relative to a vehicle body, and the corresponding outer wheel deflection angle and the corresponding inner wheel deflection angle meet the Ackerman steering condition. In the transverse vertical plane of the vehicle body, the vehicle body rotates relative to the support, the vehicle body and the wheels roll in a linkage mode, a shock absorber is not included in a roll movement transmission chain, timing and accurate control over the roll angle of the vehicle are achieved, and therefore the running stability and safety of the active roll vehicle are improved.

Description

technical field [0001] The invention relates to a vehicle steering roll transmission mechanism and an active roll vehicle applying the mechanism, belonging to the technical field of vehicle chassis, and in particular to a vehicle body active roll control technology under vehicle steering conditions. Background technique [0002] The active roll control system improves the stability, smoothness, traffic speed and safety of the vehicle by controlling the inclination of the vehicle to the inside of the curve when turning. When the road is over inclined, it automatically tilts at a certain angle to generate a balance moment to resist the centrifugal force or rollover force of the vehicle, so as to maintain a stable driving posture of the vehicle. [0003] Vehicle active roll technology is usually implemented in two ways: independent body roll, body and wheel linkage roll. The suspension is connected to the wheels, the wheels do not roll during the body roll process, the body ro...

AI Technical Summary

Problems solved by technology

[0003] The vehicle active roll technology is usually implemented in two ways: the independent roll of the body and the linkage roll of the body and the wheels. The former is the independent roll of the body, and the actuator directly drives the body to rotate relative to the frame, and the frame passes through the front and rear axles or The suspension is connected to the wheels, the wheels do not roll during the body roll process, and the body roll is independent of the vehicle steering movement, which is suitable for general car tires, but the body roll motion is difficult to control, resulting in the handling stability and smoothness of the vehicle during driving And the safety and reliability are poor; in the latter, the body and the wheel are linked to roll, and the actuator drives the roll mechanism to realize the vehicle roll through the suspension movement. The body roll, vehicle steering and wheel suspension movement affect each other, and the wheel and tire It is necessary to choose a curved tire with a curved section, but the driving stability, ride comfort and safety of the vehicle are good, and it is suitable for high-end vehicles; its application can be found in the literature "Vehicle Steering Roll Linkage Device and Active Rolling Vehicle CN109625086", "Vehicle Steering Roll combination mechanism and active roll vehicle using the mechanism CN110509994", etc. In the literature, the actuator drives the roll mechanism through the shock absorber to realize the linkage roll of the vehicle body and the wheel. Since the shock absorber is a nonlinear elastic element, it is difficult to To realize the timing and precise control of the vehicle roll angle, a mechanical or electronic delayer is required to realize the synchronous control of the vehicle body roll and the vehicle steering movement. The research on the actuator does not pass through the shock absorber and directly drives the body motion to realize the vehicle roll. It has theoretical significance and practical value for the design and manufacture of active rolling vehicles

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