Three-freedom-degree vibration screen based on parallel series mechanism

Abstract

The invention belongs to the field of vibration screening equipment, and particularly relates to a three-freedom-degree vibration screen based on a parallel series mechanism. The three-freedom-degree vibration screen comprises a static platform, a screen body, an X-axis vibration platform, a Y-axis vibration platform and double-shaft vibration exciters. The X-axis vibration platform is connected with a moving pair of the static platform. The X-axis vibration platform is driven by an X-direction vibration branch chain to move in the X-axis direction. The Y-axis vibration platform is connected with the static platform through a cylinder pair C21. The Y-axis vibration platform and the X-axis vibration platform are connected through a moving pair. The Y-axis vibration platform is driven by a Y-direction vibration branch chain to move in the Y-axis direction. The screen body is fixedly connected to the Y-axis vibration platform through compression springs. The screen body is driven by the double-shaft vibration exciters to move in the Z-axis direction. The three-freedom-degree vibration screen has the advantages that three-freedom-degree vibration screening can be achieved, the overall size is small, the screening efficiency is high, and the screening performance is stable, and important practical significance and high application value are achieved for establishing a new vibration screening theory and developing practical vibration screening equipment.

Description

technical field [0001] The invention relates to the field of vibrating screening equipment, in particular to a three-degree-of-freedom vibrating screen based on a hybrid mechanism. Background technique [0002] At present, vibrating screens are widely used in mining, metallurgy, coal, petroleum, chemical industry, water conservancy and electric power, light industry, construction and other industries, mainly to divide materials into two or more granularity levels. The actual screening efficiency per unit time of the existing vibrating screen is low, the material dispersion on the screen surface is not high, the material distribution on the screen surface is uneven, and the screen penetration effect is poor; The screening effect of screening materials has been unsatisfactory, and the screen holes are easily blocked. The treatment method of increasing the vibration intensity of the vibrating screen is often limited by the rigidity of the screen box, and the dispersion, str...

AI Technical Summary

Problems solved by technology

In the linear vibrating screen, although the structure is simple, the material only moves in a one-dimensional linear motion on the screen surface, the material is basically not thrown from the screen surface, the material is easily stuck in the screen hole, and the screen hole is prone to blockage; Although the circular vibrating screen overcomes the shortcoming that the linear vibrating screen hole is easy to be blocked, the force on the screen surface is often uneven during operation, which leads to severe overloading of the screen on one side and almost no-load operation on the other side, which often causes the screen to be damaged. The mesh wears unevenly and breaks quickly; the resonant screen works under the condition close to the resonance area, and the working frequency of the screening machine is close to its own natural frequency, so its working life will be shortened, and its complex structure limits its application. scope

Based on the above analysis, traditional vibrating screens are characterized by low screening efficiency, large overall size, high noise, and poor reliability.

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