Impeller-type energy feedback shock absorber

Abstract

The invention relates to an impeller-type energy feedback shock absorber, which is mainly used in the technical field of vehicles. The impeller-type energy feedback shock absorber comprises a shock absorbing pressure cylinder, an energy conversion device and an auxiliary device, wherein the shock absorbing pressure cylinder comprises a cylinder body and a hollow piston rod; the energy conversion device comprises an impeller device, an output shaft, a coupling, a transmission, a flywheel and a power generator; and the auxiliary device comprises a sealing ring, a one-way valve and a fluid treatment device. When a vehicle runs, an uneven pavement enables the cylinder body and the piston rod of the shock absorber to move relatively to stimulate fluid in the cylinder body to flow back and forth between an upper chamber and a lower chamber. The flowing of the fluid is converted into one-way rotary motion through the impeller device, so as to drive the power generator to generate power. The impeller-type energy feedback shock absorber has the advantages that the axial size is small and the structure is more compact; the output driving direction is constant, the impact is reduced and the service life and the efficiency are improved; and the flow of a working medium in the reciprocating travel is high, work is done fully, the energy feedback effect is better and the energy feedback can be reliably realized under working conditions of high-frequency small amplitude and low-frequency large amplitude.

Description

technical field [0001] The invention relates to a device in the technical field of vehicles, in particular to an impeller type energy-feeding shock absorber. Background technique [0002] Shock absorbers are one of the most important parts of vehicles, used to attenuate shocks and vibrations caused by uneven road surfaces. Traditional shock absorbers dissipate vibration energy irreversibly, convert it into heat and dissipate it. Studies have shown that under common working conditions, the energy consumed by the shock absorber accounts for 4% to 20% of the output energy of the engine, and with the increase of vehicle speed and the increase of road surface roughness, the energy consumption of the shock absorber will increase. big. Although this amount is not large for a single vehicle, the total amount of energy consumed by the shock absorber is very considerable in today's world where the number of vehicles continues to rise. Today, when energy is very tight, such a huge e...

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Problems solved by technology

The mechanical transmission type includes rack and pinion type (such as patent US4387781), ball screw type (such as patent CN200310109174.3, CN200510010554.0 and CN200820058175.8) and crank connecting rod type (such as patent US2006 / 0016629A1), although the mechanical transmission type The transmission efficiency is relatively high, but its life is low under impact conditions, and it is easy to cause frequent changes in the rotation direction of the generator rotor, which affects the efficiency of energy feeding and increases the difficulty of subsequent voltage and current processing circuits

Although the one-way operation of the generator rotor can be guaranteed by adding a one-way clutch and gear device, this obviously increases the complexity of the system

Fluid transmission type can be divided into volume type (such as patent CN200420026360, CN200620093992, CN201020117853.0, US2007 / 0089924A1 and US2009 / 0260935A1) and turbine type, wherein the volume type fluid transmission is to transform the traditional hydraulic shock absorber into a volume type The pump or compressor uses the high-pressure fluid generated by the vibration to drive the hydraulic motor or the air motor to rotate, and then drives the generator to generate electricity, but this solution makes the energy feeding system not compact enough, so it is not easy to apply

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