RO118650B1 - Electric actuation system of low speed, equipped with a hybrid motor for mechanical belt conveyor - Google Patents

Abstract

The invention relates to a low speed actuation system, equipped with a hybrid electric induction motor for mechanical belt conveyers, in mining, in open pits, in metallurgy, harbour arrangements, in constructions, for cereals and food products, at escalators or other transport systems. The invention is characterized by the fact that, for the purpose of directly transmitting the movement from the motor to the belt drum, there is eliminated the mechanical speed reduction unit, usually with more velocity steps, from the actuation system, by driving the conveying belt directly by low speed hybrid induction motors. According to the invention, the system consists of a drum (1), on whose sides there is fixed a disk (3). On either side of each disk (3), there is located a fixed torroidal inductor (4) whereon there is located a primary monophase or polyphase winding (5), there being performed a direct transmission of the conveyor, without a mechanical reductor. In order to improve the performances of the machine, the space between the torroidal inductors (4) and the armatures of the disk (3) is reduced to a minimum value imposed by the mechanical considerations, and inside the disk, there may be introduced a ferromagnetic substance, in order to reduce the air gap length.