Hydro-pneumatic suspension device, hydro-pneumatic suspension frame, underpan and vehicle

Abstract

The invention discloses a hydro-pneumatic suspension device (10;20), which is characterized by comprising an air source (11;21), a control loop (12;22) and an executing loop (13;23) in sequential communication, wherein in the control loop (12;22), the air pressure of the air source (11;21) is converted into the hydraulic pressure of the executing loop (13;23). The invention also discloses a hydro-pneumatic suspension frame with the hydro-pneumatic suspension device, an underpan with the hydro-pneumatic suspension frame and a vehicle with the underpan. The hydro-pneumatic suspension device has the advantages that the suspension characteristics better, the vehicle smoothness becomes higher, and the transportation efficiency is higher.

Description

technical field [0001] The invention relates to the field of vehicles, in particular to an oil-air suspension device, an oil-air suspension with the oil-air suspension, a chassis with the oil-air suspension and a vehicle with the chassis. Background technique [0002] Suspension is a general term for the force transmission connection device between the frame of the vehicle and the axle or wheels. The impact force of the vehicle body, and attenuate the vibration caused by it, so as to ensure that the vehicle can run smoothly. A typical suspension is composed of elastic elements, guide mechanisms, shock absorbers, etc. Some suspensions also include buffer blocks, stabilizer bars, etc., and elastic elements include leaf springs, coil springs, and torsion bar springs. Modern vehicles The suspension mostly uses coil springs and torsion bar springs. [0003] Generally, the chassis of existing trucks and engineering vehicles (such as dump trucks, mixer trucks and all-terrain cran...

AI Technical Summary

Problems solved by technology

Because the stiffness of the leaf spring is linear, when trucks and engineering vehicles drive on uneven roads, the stiffness of the leaf spring cannot be adjusted adaptively with the road conditions, resulting in unsatisfactory suspension performance and poor suspension characteristics. Poor, so it is usually necessary to reduce the speed of the vehicle to compensate for the suspension performance of the vehicle, thus resulting in poor ride comfort and low transportation efficiency

[0004] In addition, due to the poor suspension performance of the leaf spring suspension, the vehicle bumps a lot when the vehicle is running, especially when the truck is empty.

After long-term use, the electrical components on the vehicle are subject to bumps and vibrations, resulting in damage to the electrical components, reduced lifespan, and low reliability, making the vehicle unstable

[0005] At the same time, due to the large change of the load of the truck, the stiffness of the leaf spring cannot change with the change of the load, which leads to the inability of the truck to adjust adaptively under different vehicle conditions, resulting in poor suspension characteristics and unsatisfactory performance, resulting in The ride comfort of the vehicle deteriorates and the transportation efficiency is low

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