Torsion spring coupled double-shaft six-excitation-motor linear or elliptical vibrating screen

Abstract

The invention discloses a torsional spring coupled double-shaft six-excitation-motor linear or elliptical vibrating screen which comprises two coaxial torsional spring coupled three-excitation-motor sets, a screen box, vibration isolation springs and a base. The two sets of excitation motors are installed on the motor base in the mode that the axes are parallel, and the coupling eccentric blocks of the three excitation motors with the axes coincident are connected through the torsion spring so as to absorb impact during starting and achieve zero-phase synchronization of the three excitation motors. A vertical bisector of a center connecting line of the two groups of excitation motors passes through the mass center of the screen box and rotates reversely at a constant speed by adopting the same eccentric mass-diameter product, so that the vibrating screen realizes linear vibration; the group of excitation motors close to the feeding end uses a larger eccentric mass-diameter product, the group of excitation motors close to the discharging end uses a smaller eccentric mass-diameter product, the excitation motors and the excitation motors rotate reversely at a constant speed, and the generated excitation force realizes the elliptical motion of the vibrating screen. After stable operation, only the middle excitation motor in the three coupled excitation motors needs to be powered on. Excitation force of the excitation motor is fully exerted, large amplitude of the vibrating screen is achieved, energy consumption is low, and noise is low.

Description

technical field [0001] The invention belongs to the technical field of vibrating screens, and in particular relates to a linear or elliptical vibrating screen with dual-axis six-excitation motors coupled with torsion springs. Background technique [0002] Linear vibrating screens are usually driven by two identical double-excitation motors, and elliptical vibrating screens are usually driven by two types of double-excitation motors and triple-excitation motors. When driven by dual excitation motors, the total excitation force is limited, and it is difficult to achieve the amplitude and other working parameters required for high-efficiency screening of large-scale vibrating screens; using a single excitation motor with a large excitation force has a large self-weight, and the excitation force is The action position on the motor seat is concentrated, the strength of the motor seat is low, the phenomenon of "big horse-drawn trolley" is serious when the motor is running stably, ...

AI Technical Summary

Problems solved by technology

There is now a technology that uses two sets of coaxial elastically coupled double-excitation motors to realize the linear vibration or elliptical vibration of the vibrating screen. When only one motor is energized, the electromechanical coupling characteristics of the system make the vibrating screen in an asymmetric state in the width direction, and the motion characteristics of the vibrating screen are greatly affected.

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