Parallel Radial Magneto-Rheological Valve and Its Shock Absorber

Abstract

The invention discloses a parallel radial magneto-rheological valve, which comprises a piston outer cylinder and a piston upper end cover arranged at the end of the piston outer cylinder; A coil spacer is arranged between the magnetic sheet and the piston outer cylinder; an excitation coil is arranged between the coil spacer and the piston outer cylinder; The axial direction runs through to form the first flow guide channel, the gap between multiple magnetic conductive sheets forms the second flow guide channel along the radial direction, and the third flow guide channel is formed between the magnetic conductive sheet and the coil spacer; this technical solution The parallel radial magneto-rheological valve combines the radial flow channel with the multi-channel parallel structure, increases the controllable Coulomb damping force and reduces the uncontrollable viscous damping force, and makes the dynamic range of the magnetorheological damper Greatly improved, the controllability of the magnetorheological damper is greatly improved, and the cushioning performance of the magnetorheological damper in the high-speed impact environment is improved.

Description

technical field [0001] The invention relates to the field of magnetorheological damping, in particular to a parallel radial magnetorheological valve and a damper thereof. Background technique [0002] Cushioning refers to the process of alleviating the mechanical vibration of equipment such as vehicles, helicopters and heavy weapons when they are subjected to high-speed impact, so that the force is flattened. In practice, these impact situations will cause the occupants and mechanical equipment to be greatly impacted, thereby endangering the life safety of the occupants and the safety of equipment, so it is necessary to take buffer measures. The magnetorheological buffer device is a semi-active buffer device developed with the magnetorheological medium as the filling material, which can change the rheological characteristics in milliseconds with the help of the magnetorheological medium under the action of a magnetic field. The performance of the semi-active buffer system m...

AI Technical Summary

Problems solved by technology

In a low-speed environment, the vibration isolation system does not have high requirements on the damping force performance of the damper. The traditional magnetorheological damper can provide reasonable performance for the semi-active control system, but the dynamic range of the traditional magnetorheological damper varies with As the piston speed increases, it decreases significantly, so the impact load cannot be effectively reduced in a high-speed environment, and the buffering efficiency of the magneto-rheological damper is greatly reduced.

Most of the existing magnetorheological dampers use a single annular flow channel to generate controllable Coulomb damping force by using the flow pattern, but the working area is too small, the controllable Coulomb damping force generated is too small, and the volume flow rate of the single flow channel is small , high flow rate, the resulting uncontrollable viscous damping force is too large, and eventually the dynamic range of the magnetorheological damper is too small

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