Circumferential array spiral groove piston anti-settling magnetorheological damper

Abstract

The invention discloses a circular array spiral groove piston anti-settling magneto-rheological damper, which comprises a piston cylinder, a piston rod and a piston assembly, the piston assembly and the piston rod rotate in a single degree of freedom, the piston assembly and the piston cylinder The circular surface axially seals and slides and rotates, and the stirring assembly is in transmission cooperation with the piston assembly. The outer surface of the piston assembly is provided with a spiral groove, and the spiral groove is connected to the two axial ends of the piston assembly. In the present invention, during the upward or downward process of the piston assembly, the magnetorheological fluid will exert a circumferential tangential component force on the piston assembly during the flow process, and then the entire piston assembly can be driven to rotate without external energy supply. Drive the stirring assembly to rotate and then stir the magnetorheological fluid to improve the settlement phenomenon of the magnetorheological fluid, so that the damper can quickly and automatically return to the normal working state in a short time after starting to work, thereby effectively avoiding the damping caused by the magnetorheological fluid settlement Problems with reduced performance and vibration damping.

Description

technical field [0001] The invention relates to the technical field of dampers, in particular to an anti-settling magnetorheological damper for a circular array spiral groove piston. Background technique [0002] The rheological damper is a vibration damping device based on the magnetorheological effect. Because of its adjustable damping force, it can be semi-actively controlled and widely used in various fields. The development and application of rheological dampers are greatly restricted. [0003] In the prior art, the problem of magnetorheological fluid sedimentation is usually solved by improving the material of the magnetorheological fluid itself, but the improvement of the magnetorheological fluid itself can only slow down the speed of the magnetorheological fluid sedimentation, and cannot solve the problem of long-term storage. When the damper is left standing for a long time, the magnetorheological fluid will still settle, which will affect the damping performance a...

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Problems solved by technology

[0002] The rheological damper is a vibration damping device based on the magneto-rheological effect. It is widely used in various fields because of its adjustable damping force and semi-active control. However, due to the static settlement problem of the magnetorheological fluid, the magnetic The development and application of rheological dampers are greatly restricted

[0003] In the prior art, the problem of magnetorheological fluid settlement is usually solved by improving the material of the magnetorheological fluid itself, but the improvement of the magnetorheological fluid itself can only delay the sedimentation speed of the magnetorheological fluid, and cannot solve the problem of long-term storage. The settlement problem of the magnetorheological fluid; when the damper is left standing for a long time, the magnetorheological fluid will still settle, which will affect the damping performance and vibration reduction effect of the shock absorber

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