Crushing-screening machine

Abstract

The invention discloses a crushing-screening machine which comprises a crushing device and a power system, and further comprises a screening module, wherein the crushing device and the power system are arranged on a chassis; the screening module comprises a vibrating screen and a belt conveying device; the vibrating screen is inclined towards the direction of the crushing device; the belt conveying device is arranged at the bottom of the vibrating screen; both the bottom of one end of the vibrating screen and one end of the belt conveying device are hinged with the chassis; the other end of the vibrating screen and the other end of the belt conveying device are connected through a first amplitude changing mechanism; and a height detector is arranged at the bottom of the other end of the belt conveying device, and connected with the first amplitude changing mechanism through a control device. The crushing-screening machine has the advantages that the first amplitude changing mechanism is controlled by the height detector through the control device; the other end of the belt conveying device is moved down, so that a certain distance can be kept between the belt conveying device and the height top surface of a stone stack; along with the increase of crushed stones, the first amplitude changing mechanism is controlled by the control device to upward stretch the belt conveying device; and accordingly, the own height of the belt conveying device can be automatically regulated along with the height of the stone stack, the idle work is reduced, and the waste of energy is avoided.

Description

technical field [0001] The invention relates to the technical field of crushing and screening, in particular to a crushing and screening machine. Background technique [0002] At present, rock crushing and screening equipment is widely used in the production lines of powder, mineral materials, aggregates, aggregates, etc. in mining, metallurgy, chemical industry, foundry, building materials, water conservancy and hydropower, transportation construction and other industries. The mobile screening station is widely used in the working fields with flexible sites and small and medium output. [0003] The under-screen belt conveyor of the existing screening station is often suspended on the lower part of the screen box or the lower part of the under-screen platform through a connecting device, and the inclination angle of the belt conveying and the inclination angle of the screen box are kept consistent or positively correlated. The inclination angle of the screen box is closely ...

AI Technical Summary

Problems solved by technology

As a result, the belt conveyor under the screen still transports the material to a high place when the stacking height is not large or the transfer height is not large, and then falls to the blanking position, which is a waste of energy.

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