Double-shear magneto-rheological clutch under permanent magnet excitation

Abstract

The invention discloses a double-shear magneto-rheological clutch under permanent magnet excitation. The double-shear magneto-rheological clutch comprises an output shaft, an outer shell, an input rotary drum shell, an input rotary drum core, magneto-rheological glue, an end cover, an input shaft, an inner shell shaft, an input rotary disc, a permanent magnet, a permanent magnet end cover and an inner shell. The inner shell is mounted in a cavity formed by the output shaft end cover, the sleeve, the outer shell and the end cover; a whole formed by connecting the permanent magnet, the permanent magnet sleeve and the permanent magnet end cover is mounted in the inner shell; one end of the spring is connected with the permanent magnet sleeve, and the other end is connected with the output shaft end cover; the input rotating drum shell is fixedly connected with the input rotating disc, and the input shaft is fixedly connected with the input rotating disc. The inner shell shaft is fixedly connected with the inner shell; the input rotary drum core is embedded into the input rotary drum shell, and the input shaft and the end cover are connected through a bearing to form a rotating pair. The magneto-rheological gel is adopted as a force transmission medium, the permanent magnet is adopted as an excitation source, the torque is controllable, the automatic fault prevention function is achieved, magnetic field excitation energy consumption is avoided, and the structure is simple.

Description

technical field [0001] The invention relates to the technical field of mechanical transmission equipment, in particular to a double-shear magnetorheological clutch under permanent magnet excitation. Background technique [0002] Traditional couplings are divided into rigid couplings and flexible couplings with adjustable axial, radial and angular errors. The former is widely used in mechanical transmission devices due to its advantages of simple structure, low cost, and large torque transmission. The latter uses some viscoelastic elements, which have a certain ability to absorb and dampen vibrations, and can be used in some occasions with high requirements for working environments. These two couplings do not have the function of overload protection during work. [0003] With the development of the machinery industry, the requirements for the components of the mechanical system are getting higher and higher, including the mechanical properties, precision, multi-functionalit...

AI Technical Summary

Problems solved by technology

The coupling is able to achieve zero energy consumption, but unfortunately the transmitted torque is not adjustable, and it is not fail-safe

In addition, the document "Bucchi F, Forte P, FranceschiniA, et al.Analysis of differently sized prototypes of an MRclutchbyperformance indices[J].Smart Materials and Structures, 2013, 22(10):105009." announced a single-sided shear permanent Magnetically actuated clutch, which separates the outer casing, greatly increases the size of the oil seal, and then generates excessive heat in the slip state, which is not conducive to the stable operation of the device; secondly, the clutch is in a single-sided shear state, making the The torque is greatly weakened; the most important thing is that the working parts are traditionally composed of a single material, which also reduces the utilization of the magnetic field

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