Permanent magnetic differential drive mechanism

Abstract

The invention discloses a permanent magnetic differential drive mechanism, comprising an inner shaft, an outer shaft, permanent magnetic rotors and magnetic conductive rotors. The magnetic conductive rotors comprise first ferromagnetic blocks and second ferromagnetic blocks arranged oppositely in pairs. The inner shaft is connected with the outer shaft through a bearing. The inner shaft is connected with the permanent magnetic rotors. The peripheral surface of the inner shaft is provided with two rows of raised grooves. The permanent magnetic rotors are distributed between the two rows of raised grooves. The amount ratio of the permanent magnetic rotors and the magnetic conductive rotors is one to two, and the permanent magnetic rotors and the magnetic conductive rotors are distributed at equal interval. One end of the first ferromagnetic block and one end of the second ferromagnetic block are connected with the outer shaft through sliding grooves. The other ends respectively contact with the two rows of raised grooves of the inner shaft through connecting plates. The first ferromagnetic blocks and the second ferromagnetic blocks rotate with rotation of the inner shaft, after sliding along the raised groove through the connecting plates, the first ferromagnetic blocks and the second ferromagnetic blocks are switched between opposite keeping-away separation and relative close along the groove rails of the sliding grooves. The permanent magnetic differential drive mechanism can still continuously output torque forward under condition of maintaining differential velocity through changing magnetic circuits, and volume is reduced and structure is simplified, and energy lost in sliding friction can be reduced, so as to improve transmission efficiency.

Description

technical field [0001] The invention relates to a transmission mechanism, in particular to a permanent magnet differential transmission mechanism, which belongs to the technical field of mechanical transmission equipment. Background technique [0002] With the development of human society, we are more and more inseparable from power, and various transmission devices are developing rapidly; however, various continuously variable transmission devices therein also have their own shortcomings. [0003] For a relatively complete transmission device, there is a hydraulic torque converter, but its structure is complicated, its technical requirements are high, its production cost is high, and it is not suitable for large-scale use; and although the permanent magnet coupling is simple in structure and high in transmission efficiency, it has not been developed so far. It is impossible to change its transmission ratio; as for the permanent magnet eddy current technology, although it ca...

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Problems solved by technology

[0003] For a relatively complete transmission device, there is a hydraulic torque converter, but its structure is complicated, its technical requirements are high, its production cost is high, and it is not suitable for large-scale use; and although the permanent magnet coupling is simple in structure and high in transmission efficiency, it has not been developed so far. It is impossible to change its transmission ratio; as for the permanent magnet eddy current technology, although it can realize stepless speed change, it is relatively too large and too complicated to install

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