Multi-vibration type hydraulic vibrating screen

Abstract

The invention discloses a multi-vibration type hydraulic vibrating screen which comprises a screen box and an engine base, wherein the screen box is arranged on the engine base through an elastic support; the multi-vibration type hydraulic vibrating screen further comprises two hydraulic cylinders; the two hydraulic cylinders are movably or rotatably arranged on the engine base; the telescopic ends of the two hydraulic cylinders are fixedly connected with or hinged to the screen box; a preset angle is formed by telescopic rods of the two hydraulic cylinders; the straight lines, on which the two telescopic rods are positioned, penetrate through the centroid of the screen box. The two hydraulic cylinders are movably or rotatably arranged on the engine base; the telescopic ends of the hydraulic cylinders perform telescopic movement according to a certain preset rule, act on the centroid, and enable the screen box to vibrate according to a certain track so as to form a straight line, a circle, an oval or other-shaped vibration tracks. The mode of vibration or the vibration parameter of the screen box can be changed when the telescopic movement parameters of the telescopic ends are changed; in addition, the vibrating screen can rapidly penetrate through a resonance region to prevent damage on the screen box when the vibrating screen is started or stopped.

Description

technical field [0001] The invention relates to the technical field of vibrating screens, in particular to a multi-vibration hydraulic vibrating screen. Background technique [0002] The vibrating screen is usually used for material screening, dehydration, etc. The vibrating screen has a screen box with the bottom surface as the screening surface. When the screen box vibrates according to a certain trajectory, the materials inside are thrown up. When the materials fall, the small particles, water, etc. Screened out through the sieving surface. [0003] The currently used vibrating screens use the vibration generated by the vibration of the vibrator to drive the vibration of the screen box. From the vibration type, they include circular vibrating screens, linear vibrating screens and elliptical vibrating screens. The vibration trajectory of the circular vibrating screen and the linear vibrating screen is relatively easy to realize. The elliptical vibrating screen needs to be...

AI Technical Summary

Problems solved by technology

[0005] In addition, the vibrating screen that vibrates through the vibration of the vibrator must pass through the resonance zone during the process of starting and stopping. When the vibration frequency of the vibrator is close to the overall vibration frequency of the vibrating screen, the vibrating screen will resonate, and the resonance will affect the vibrating screen. Strong impact, especially during the shutdown process, due to the longer shutdown time and longer resonance time, may cause serious consequences such as beam breakage and screen box cracking

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