Active suspension using air spring assembly

Abstract

The invention discloses an active suspension using an air spring assembly in the technical field of vehicle suspensions. The lower end of an inner cylinder of an active force actuator extends out of an outer cylinder and is concentrically and fixedly connected with the air spring assembly; the air spring assembly has two air springs which have same structures and are symmetrically placed with oneunder the other; a rigid inner tube which is placed in the front-and-back direction is arranged between the two air springs; the central axis of the rigid inner tube is perpendicularly intersected with that of the active force actuator; the front and back ends of the rigid inner tube are fixedly connected with the upper end of an inner tube mounting seat; the lower end of the inner tube mounting seat is rigidly connected with a lower fork arm; the lower fork arm is connected between a vehicle body and a wheel; and a damping tube is connected between two airbags in a sealed manner and is in communication with the two airbags. According to the active suspension using the air spring assembly, the air spring assembly has a vibration absorbing function except for a connecting function; and except for a primary vibration absorbing function formed by the active force actuator and the spiral spring, the active suspension using the air spring assembly also has a secondary vibration absorbing function formed by the air spring assembly.

Description

technical field [0001] The invention belongs to the technical field of vehicle suspension, and in particular relates to a vehicle active suspension adopting a rotating electrical machine type active force actuator. Background technique [0002] Suspension is the general term for the force transmission connection device between the frame (or load-bearing body) and the axle (or wheel) of the vehicle. Its function is to transmit the force and moment acting between the wheel and the frame, and the buffer The impact force transmitted to the frame or body by the uneven road surface, and attenuates the vibration caused by it, so as to ensure the smooth running of the car. [0003] The active force actuator is a key component of the vehicle's active suspension. The active force actuator has the ability to provide active control force to the suspension and has the potential to make the car obtain a good ride comfort. At present, active power actuators include hydrostatic type, pneum...

AI Technical Summary

Problems solved by technology

[0004] The invention aims at the problem that the ideal control force of the suspension is amplified due to the large equivalent inertial mass of the existing suspension adopting the rotating motor type active force actuator, and proposes a suspension adopting an air spring assembly. Active suspension, the active force actuator is concentrically fixed and connected in series with an air spring assembly with vibration damping function, which effectively eliminates the influence of equivalent inertial mass on ideal control force

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