Self-powered type magnetorheological damper

Abstract

The invention discloses a self-powered type magnetorheological damper. The self-powered type magnetorheological damper comprises a power generation chamber, a damping chamber and a piston rod, wherein the power generation chamber is welded on a damping chamber cylinder by a power generation chamber shell; a ball bearing leading screw is formed by a screw rod part of the piston rod as well as a nut and a ball bearing positioned in the power generation chamber; a polish rod part of the piston rod penetrates through a sealing part and extends into the damping chamber; a piston inside the damping chamber is fixedly connected with the piston rod; the piston is wound with a coil and is led to the outside of the power generation chamber through an inner through hole of the piston rod; the periphery of the nut is connected with a rotor; the periphery of a rotor is a stator iron core; the stator iron core is fixedly connected with the inner wall of the power generation chamber shell. When the damper works, liquid in the damping chamber produces damping force through a damping channel, and the damping force is adjusted by the coil; a reciprocation motion of the piston rod is turned into a rotation motion by the ball bearing leading screw; the rotor rotates to ensure that a magnetic induction line is cut by stator winding to generate electricity, so that recycling of energy is realized. The self-powered type magnetorheological damper has a simple structure and has a small occupied space; under a premise of not influencing original damping performance of the damper, the recycling of the energy is realized, and popularization and application of the damper to vehicles are convenient.

Description

technical field [0001] The invention belongs to the technical field of machinery and motors, in particular to a magneto-rheological shock absorber with self-power supply function. Background technique [0002] With the continuous increase of global automobile production and the increasing popularity of automobiles, automobiles are becoming an indispensable means of travel for people. However, the energy utilization rate of automobiles cannot meet people's requirements, and a large amount of energy is wasted during automobile driving. Among them, the energy generated by the vibration of the car is mainly converted into heat energy and dissipated into the air through the damping of the shock absorber. According to the driving performance simulation of a typical car under different working conditions and the energy consumption of its suspension, it is found that when the vehicle travels on a C-class road at a speed of 20m / s for 20s, the passive suspension system consumes energ...

AI Technical Summary

Problems solved by technology

A Chinese patent (CN102797655A) discloses a power generation system for automobile piezoelectric shock absorbers, which uses the up and down movement of the piston rod of the shock absorber to pump the oil into the high-pressure tank to form the hydraulic energy of the oil, and uses the hydraulic energy of the oil to drive the motor to drive The rotation of the rotating shaft changes the pressure of the oil in the hydraulic cylinder, and the quasi-harmonic vibration is formed by the pressure change of the oil to drive the piston to produce quasi-harmonic vibration compressive stress on the piezoelectric stack, so that the positive piezoelectric effect of the piezoelectric ceramic will The mechanical energy is converted into electrical energy, and the rectifier bridge and the energy storage are connected in turn to complete the function of the piezoelectric energy conversion system; this structure can theoretically realize the energy recovery of the vibrator, but there are complex structures and low power generation efficiency due to multiple energy conversions question

Similar to the Chinese patent (CN102926956A), the related method of utilizing hydraulic energy storage for energy recovery basically uses the accumulator to store the hydraulic energy in the shock absorber, and when a certain pressure requirement is reached, the accumulator is used to store the hydraulic energy in the shock absorber. The high-pressure liquid drives the hydraulic motor to rotate, converts the hydraulic energy into kinetic energy, thereby drives the generator to rotate, and realizes energy recovery and utilization; these technical solutions have the characteristics of too many additional accessories and occupying a large space

[0004] Whether it is the above-mentioned patents or some other existing patented technologies, the energy recovery of the shock absorber can be realized, but most of them have problems that are difficult to overcome in practical applications, such as too low power generation efficiency, too large space size, and affecting the original structure of the shock absorber. There is a defect in the function of the shock absorber

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