Magneto-rheological transmission device extruding bearing bushes based on coil heating induced shape memory alloys

Abstract

The invention discloses a magneto-rheological transmission device extruding bearing bushes based on coil heating induced shape memory alloys. The magneto-rheological transmission device comprises a driving shaft, a driven shell and a driven shaft, a coil groove is formed in the middle of a transmission section, and a magnet exciting coil is arranged in the coil groove. A plurality of bearing bushes are arranged on the two sides of an outer flow guide disc correspondingly, a containing groove is formed in the position, on the transmission section, of each bearing bush, and ejector blocks andshape memory alloy springs are arranged in the containing grooves. A first liquid guide channel is arranged between the coil groove and each containing groove, and second liquid guide channels are arranged on the inner sides of the coil groove and the containing grooves. The containing grooves, a coil containing cavity, the first liquid guide channels, the second liquid guide channels, third liquid guide channels and fourth liquid guide channels are filled with liquid gallium-based alloys. According to the magneto-rheological transmission device extruding the bearing bushes based on the coil heating induced shape memory alloys, the influence of coil heating on the performance of the magneto-rheological transmission device is reduced, the transmission performance of the transmission device under the high-temperature working condition is enhanced, and therefore the reliability and stability of the transmission device are improved.

Description

technical field [0001] The invention relates to the technical field of power transmission, in particular to a magneto-rheological transmission device based on extruded bearing bushes of shape-memory alloys induced by coil heating. Background technique [0002] Magnetorheological fluid is a solid-liquid two-phase smart material whose shape and performance are constrained and controlled by an external magnetic field. Under the action of an external magnetic field, magnetorheological fluid completes the reversible transformation from liquid to viscoplastic in milliseconds. During the increase of magnetic induction, the apparent viscosity of these fluids can show several orders of magnitude changes, have a certain shear yield strength, and can be continuously controlled by the external magnetic field. [0003] Based on the excellent performance of continuous control, reversible transformation and rapid response of magnetorheological fluid, it has a wide range of application scen...

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to solve the problems that the existing magneto-rheological transmission device is greatly affected by temperature, has poor reliability and stability, large energy waste, and low transmission efficiency, and provides a coil heating-induced The magneto-rheological transmission device of the shape memory alloy extruded bearing can convert the heat energy generated during the operation of the transmission device into mechanical energy, which not only reduces the coil heating and attenuates the performance of the magneto-rheological fluid, but also enhances the transmission of the transmission device under high-temperature conditions. Performance, thereby improving the reliability and stability of the transmission device, at the same time, reducing energy waste and improving transmission efficiency

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