Multi-magnetic circuit magnetorheological shock absorber with permanent magnets

Abstract

The invention discloses a multi-magnetic circuit magneto-rheological shock absorber with permanent magnets, which includes a cylinder body, a piston rod, a magnetic core, a magnetorheological fluid, a coil, a magnetizer and a permanent magnet; The outside of the cylinder body facilitates the installation and disassembly of the coil during daily maintenance. At the same time, the heat generated when the coil is energized can be dissipated well without affecting the viscosity of the magneto-rheological fluid, thereby prolonging the service life of the shock absorber. Since the coil is placed outside, the internal structure of the shock absorber is relatively simple, thereby reducing manufacturing difficulty and saving manufacturing cost.

Description

technical field [0001] The invention relates to the field, in particular to a multi-magnetic circuit magneto-rheological shock absorber with permanent magnets. Background technique [0002] The viscosity of magnetorheological fluid can change with the strength of the external magnetic field, and its main characteristics are fast, reversible and controllable. The magnetorheological shock absorber uses this characteristic to change the output damping force of the magnetorheological hydraulic mount by controlling the current in the excitation coil to change the magnetic field strength, so as to attenuate the vibration of the car. This process responds quickly, the process is continuous, reversible. [0003] In the current magneto-rheological shock absorber, the coil is mainly arranged in the circumferential groove of the piston, and the coil wire is led out of the shock absorber through the deep hole processed in the piston rod. Although this solution has a compact structure,...

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