A magneto-rheological fluid brake device

Abstract

A magneto-rheological fluid braking device according to the present invention, comprising: a housing, a liquid inlet and a liquid outlet are opened on the housing, a liquid inlet channel and a liquid outlet channel are opened inside the housing, the liquid inlet and the liquid inlet channel Connected, the liquid outlet channel is connected with the liquid outlet, the stator, the rotor and the left and right flow distribution plates are installed in the inner cavity of the casing, the stator is surrounded by the outside of the rotor, the transmission shaft is inserted in the casing, and the rotor and the left and right flow distribution plates The disk is set on the transmission shaft, and the transmission shaft drives the rotor to rotate. Blades are installed on the rotor. A cavity is formed between the stator, the rotor and the left and right distribution plates. The cavity is filled with magnetorheological fluid. The two ends of the cavity Excitation coils are respectively provided, and a magnetic isolation copper sleeve is provided on the side of the excitation coil close to the blade, and a liquid suction hole and a liquid pressure hole are respectively opened on the left and right flow distribution plates corresponding to the transition curve. The device of the invention has a novel structure, increases the braking torque, improves the defect that the existing magneto-rheological fluid brake has too small braking torque, and has continuously adjustable torque and fast response speed.

Description

[0001] Technical field: [0002] The invention relates to the technical field of brake devices, in particular to a magneto-rheological fluid brake device. [0003] Background technique: [0004] Since Rabinow discovered the rheological properties of magnetorheological fluids in the 1940s, magnetorheological fluids have become an important research direction for smart materials. Magnetorheological fluid is a kind of intelligent fluid material, which is a suspension made of nano-scale soft magnetic particles made of high magnetic permeability and low hysteresis and non-magnetic liquid. When there is no external magnetic field, it exhibits low-viscosity Newtonian fluid characteristics under the action of zero magnetic field, and once an external magnetic field is applied, its fluid properties will change sharply, and it can be changed within a few milliseconds under the action of a magnetic field. The fluid becomes a non-Newtonian fluid, presenting a solid-like state with high vi...

AI Technical Summary

Problems solved by technology

Magneto-rheological brake is one of the applications of magnetorheological fluid. The magnetorheological fluid braking device uses the viscous shear force of magnetorheological fluid to brake. It has the advantages of small size, low energy consumption, and fast response. Rheological fluid brakes have disadvantages such as small braking torque and poor heat dissipation, which restrict its application

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