Multipath magnetic circuit magneto-rheological shock absorber with permanent magnet

Abstract

The invention discloses a multipath magnetic circuit magneto-rheological shock absorber with a permanent magnet. The multipath magnetic circuit magneto-rheological shock absorber comprises a cylinderblock, a piston rod, a magnetic core, magnetorheological fluid, a coil, a magnetizer and the permanent magnet. According to the multipath magnetic circuit magneto-rheological shock absorber, the coilis arranged outside the cylinder block, installation and dismantling of the coil are facilitated during daily maintenance. Meanwhile, heat generated by the electrified coil can be dissipated well without affecting the viscosity of the magnetorheological fluid. Accordingly, the service life of the shock absorber is prolonged. As the coil is arranged outside, the internal structure of the shock absorber is concise, the manufacturing difficulty is reduced, and the manufacturing cost is reduced.

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,...

Images