A double-rod shear mode magneto-rheological shock absorber

Abstract

The invention discloses a magneto-rheological shock absorber with double-extruded rod shear mode, which comprises an inner cylinder, an outer cylinder, and a telescopic cylinder located between the inner cylinder and the outer cylinder, and the telescopic cylinder is connected to the inner cylinder and the outer cylinder. There are gaps respectively, and sealing rings are arranged at intervals in the gaps, and the sealing rings seal the gaps between them to form a closed working chamber, the working chamber is filled with magnetorheological fluid, and the telescopic tube It can reciprocate along the working chamber in the magnetorheological fluid. The inner cylinder is located on the outer wall of the working chamber section and is wound with a coil. After the coil is energized, a magnetic field is generated, and the magnetic field acts on the magnetorheological fluid in the working chamber. The invention generates damping force through the shear mode, and has obvious low-speed large damping characteristics. When the vehicle turns, it can provide a considerable anti-rolling damping force, thereby effectively suppressing the body roll and improving the handling stability and cornering of the vehicle. increase road speed and improve ride comfort.

Description

technical field [0001] The invention relates to a double-extruded rod shear mode magneto-rheological shock absorber, which belongs to the field of auto parts and vibration and noise reduction. Background technique [0002] Magnetorheological fluid is a material whose rheological properties such as viscosity and plasticity change sharply under the action of an external magnetic field. A controllable yield strength is produced, and this change is reversible. By changing the magnitude of the current, the rheological properties of the magnetorheological fluid can be effectively controlled. According to this principle, a magnetorheological shock absorber with continuously adjustable damping force can be designed. [0003] At present, the common magnetorheological shock absorbers are mostly telescopic valve magnetorheological shock absorbers, which generate a pressure difference between the upper and lower chambers through the up and down movement of the piston, so that the magne...

AI Technical Summary

Problems solved by technology

Considering that when the vehicle is turning, the frequency of vehicle body roll is low, and the telescopic valve magneto-rheological shock absorber cannot provide sufficient damping force to achieve effective roll control, which may lead to vehicle rollover accidents in severe cases

In addition, in order to ensure that the working area is always filled with magnetorheological fluid, it is necessary to set up an additional magnetorheological fluid compensation mechanism, which makes the consumption of magnetorheological fluid larger and the production cost of the shock absorber is relatively high

For example, in the application text of the patent application number 201910623043.8, a shear mode magnetorheological shock absorber is disclosed. The manufacturing process of the magnetorheological shock absorber with this structure is relatively difficult, the cost is also high, and additional The magnetorheological fluid compensation mechanism and other deficiencies

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