Rigidity and damping multistage adjustable oil-pneumatic suspension and control method

Abstract

The invention relates to a rigidity and damping multistage adjustable oil-pneumatic suspension and a control method, and belongs to the field of combination of hydraulic and pneumatic engineering, mechanical engineering and vehicle engineering. The rigidity and damping multistage adjustable oil-pneumatic suspension comprises a hydraulic cylinder, a damping valve, a switch electromagnetic valve andan energy accumulator, the energy accumulator adopts a diaphragm type energy accumulator, an oil cavity of the energy accumulator and a nitrogen chamber are separated by an energy accumulator diaphragm, and the energy accumulator comprises a first energy accumulator A and a second energy accumulator B which are respectively connected with switch valves 9 and 10 in series; a damping adjusting mechanism comprises two switch electromagnetic valves 7 and 8, three throttle valves 4, 5 and 6 and a one-way valve 3, the throttle valves 5 and 6 are respectively connected with the switch electromagnetic valves 7 and 8 in series, and the throttle valves 4, 5 and 6 are connected with one another in parallel. According to the rigidity and damping multistage adjustable oil-pneumatic suspension system,the rigidity and damping can be adjusted according to loads and road conditions, the adaptability of a vehicle to different roads is improved, the driving performance of the vehicle is improved, and the rigidity and damping multistage adjustable oil-pneumatic suspension has the advantages of being convenient to disassemble and assemble, reliable in work, capable of effectively improving the driving comfort and safety of the vehicle and the like.

Description

technical field [0001] The invention relates to a multi-stage adjustable stiffness and damping oil-pneumatic suspension, which is a suspension system and control method with adjustable stiffness and damping in stages suitable for passenger vehicles, agricultural vehicles, engineering vehicles, etc., and belongs to hydraulic and pneumatic , mechanical engineering, and vehicle engineering. Background technique [0002] The suspension system is an important mechanism that connects the body (or frame) and the wheels (or axle). It transmits the gravity of the body to the frame and wheels, and continuously eases and absorbs the vibration shock caused by the up and down beating of the wheels during road driving. The suspension system has a very important impact on the ride comfort, handling stability and other performance of the car, and is one of the key assemblies of modern cars. Hydro-pneumatic suspension, as an automobile suspension system with excellent performance, has a go...

AI Technical Summary

Problems solved by technology

At present, shock absorbers with adjustable damping have appeared on some high-end vehicles, so that the damping force can be adjusted in a wide range. Maintenance is inconvenient. At the same time, due to the built-in structure, the requirements for the matching accuracy of the components and the control accuracy of the actuator are relatively high, resulting in difficult processing

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