Three-shock-excitation-motor elliptical vibrating screen based on elastic coupling

Abstract

The invention relates to a three-shock-excitation-motor elliptical vibrating screen based on elastic coupling. The three-shock-excitation-motor elliptical vibrating screens based on the elastic coupling is mainly composed of a first shock excitation motor, a second shock excitation motor, a third shock excitation motor, a connecting rod, sliding grooves, a motor base, a screen box, sliding blocks, springs and the like. The motor base is fixed to a side plate of the screen box, and the three shock excitation motors are connected to the motor base through bolts. A sliding groove is welded to each of the two ends of the connecting rod, and the sliding grooves are parallel to each other. The second shock excitation motor and the third shock excitation motor are installed with axes parallel, the second shock excitation motor and the third shock excitation motor rotate in the same direction, and sliding blocks capable of rotating relative to eccentric blocks are installed at the positions with same radious vector on the same-side eccentric blocks of the second shock excitation motor and the third shock excitation motor. A shock excitation inertia force generated by the first shock excitation motor is also a circular exciting force, the circumferential changing direction of the shock excitation inertia force is opposite to that of a circular exciting force combined by the second shock excitation motor and the third shock excitation motor, and the shock excitation inertia force and the circular exciting force are combined to an elliptical exciting force with the center fixed. According to the three-shock-excitation-motor elliptical vibrating screen based on the elastic coupling, the exciting forces of the three shock excitation motors can be brought into play to achieve the maximization of a general exciting force, the structure is simple, the installation is easy, the noise is low, and the cost is low.

Description

technical field [0001] The invention relates to an elliptical vibrating screen with three excitation motors based on elastic rod coupling, which is used in metallurgy, coal, petroleum, chemical industry, water conservancy and electric power, transportation, food and other industries. Background technique [0002] With the rapid development of vibrating screens, elliptical vibrating screens have attracted extensive attention in some fields because they have the advantages of circular vibrating screens and linear vibrating screens. At present, the vibration sources of the elliptical vibrating screens proposed in China are mainly double-excitation motors and three-excitation motors. Compared with the double-excitation motors, the three-excitation motors can generate greater excitation force, and the amplitude of the ellipse And the trajectory can be adjusted according to the actual use, which is suitable for the occasions requiring large screening. Among the elliptical vibrati...

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Problems solved by technology

Among the elliptical vibrating screens with three excitation motors, there are mainly Chinese patents ZL200710011470.8 and ZL200720012353.9, which propose a three-axis self-synchronizing elliptical vibrating screen, which has a simple structure and is easy to install, overcoming the complex structure and installation requirements of traditional vibrating screens The disadvantage of high precision can better meet the needs of large-area vibrating screens for the excitation force, which is conducive to the direction of large-scale vibrating screens. However, due to its own structure, it is easy to cause the screen box to be affected by the support spring during work. The force is uneven, which has a great impact on the balance of the vibrating screen

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