Energy-saving self-locking magnetorheological damper

Abstract

The invention discloses an energy-saving self-locking magneto-rheological damper, which comprises magnetorheological fluid, a cylinder body, a piston disc, a NdFeB permanent magnet matrix, a stepping motor, a worm reducer, high-pressure nitrogen, and a Hall sensor. Wait. The inside of the cylinder body is filled with magnetorheological fluid, and the inside of the piston disc has a matrix of NdFeB permanent magnets, which can rotate around a round hole at one end of the matrix to adjust the damping force. An orifice is arranged near the outer circumference of the piston disc, and the magnetic fluid can flow through the orifice. The stepping motor is connected with the worm reducer, the output shaft is equipped with a reel, and the rotation of the reel drives the rotation of the permanent magnet matrix. The high-pressure nitrogen gas is at one end of the cylinder block, and its effect is to maintain the static pressure inside the magnetic fluid and exhaust the air. The invention can still maintain the damping force after the power is cut off, and at the same time has the ability to adjust the damping force steplessly, has low power consumption, low heat generation, low cost and simple structure.

Description

technical field [0001] The present invention relates to an energy-saving self-locking damper, more specifically, to a self-locking magnetorheological damper using NdFeB permanent magnets, which can solve the energy problems of magnetorheological dampers such as heating and large power consumption . Background technique [0002] Dampers are widely used in all aspects of production and life. Common dampers include hydraulic dampers, air dampers, and magnetic fluid dampers. Among them, the magnetic fluid damper has attracted more and more attention due to its advantages of stepless adjustment, smooth connection without impact, and fast response. However, the existing magnetic fluid dampers rely on the electromagnetic field generated by the electromagnet to change the viscosity of the magnetic fluid to achieve the purpose of changing the damping effect. However, the electromagnet needs continuous current input when it is working, which generates a lot of heat, which in turn af...

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