Hydraulic extrusion type magnetorheological fluid clutch

Abstract

The invention discloses a hydraulic extrusion type magnetorheological fluid clutch, and belongs to the technical field of mechanical transmission. The hydraulic extrusion type magnetorheological fluidclutch comprises a mechanical structure part and a hydraulic control part. The mechanical part comprises a shell, a driving assembly, a driven assembly, a magnetorheological fluid, a magnetorheological fluid extrusion device, a volume fine adjustment device and a magnetic field generation device. The hydraulic control part comprises a motor, an oil pump, a two-position two-way electromagnetic valve and an electro-hydraulic proportional overflow valve, and is used for controlling the axial extrusion force of the magnetorheological fluid. The working mode of a traditional magnetorheological fluid clutch based on single shear flow is changed, on the basis that the size of a mechanical structure device of the clutch is not increased, the torque transmission capacity is greatly improved, and the torque / volume ratio or the torque / mass ratio several times larger than that of a common magnetorheological fluid clutch is achieved.

Description

technical field [0001] The invention relates to an intelligent clutch based on an intelligent material "magneto-rheological fluid", in particular to a magneto-rheological fluid clutch working in a mixing mode of extrusion and shearing. Background technique [0002] Magneto-rheological fluid is a new type of intelligent material, which can produce unique rheological characteristics under the action of an external magnetic field, from a low-viscosity Newtonian fluid to a high-viscosity solid-like state, showing a certain shear yield stress, Moreover, this rheological property is instantaneous, reversible and highly controllable. At present, magnetorheological fluid has been widely used in the field of mechanical transmission due to its advantages of fast response, low energy consumption, easy control, good durability, wide operating temperature range, and long service life. The magneto-rheological clutch realizes the functions of coupling and separation of the clutch through ...

AI Technical Summary

Problems solved by technology

It overcomes the shortcomings of traditional clutches such as easy wear, high noise, and complex structure, and can realize flexible transmission between the main and driven parts, low energy consumption, high sensitivity, high precision, stable stepless speed regulation, and easy speed regulation process. remote control and automatic control, etc.

However, the lack of shear yield stress of magnetorheological fluids has always limited the development of magnetorheological fluid clutches. The magnetorheological clutches designed based on the shear yield stress of magnetorheological fluids are not suitable for transmission due to their small torque. Cannot meet industrial needs

However, these driving extrusion methods have disadvantages such as poor controllability or low driving power density. The present invention relates to a hydraulically driven extrusion type magneto-rheological fluid clutch, which has the advantages of large driving power, high pressure control precision and good control stability, etc. features

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