HYDRAULIC CIRCUIT AND METHOD OF CONTROL OF GYRATOR CONE CRUSHER Russian patent published in 2016 - IPC B02C2/00 

FIELD: machine building.

SUBSTANCE: group of inventions relates to the method of control of the gyrator cone crusher and hydraulic circuit for this method implementation. The control method means that clearance of the crusher made by the internal and external housings is kept by means at least one hydraulic cylinder, wherein at pressure increasing of the hydraulic liquid of the first limit pressure value the hydraulic liquid is drained from the cylinder. Wherein the method includes a stage, when state of processing of the accidentally entered metal is identified, and, if such state was identified, the stage, when the said limit pressure value is reduced for some definite time period. The hydraulic circuit contains a logic element made with possibility of the hydraulic liquid drainage from the cylinder, if the hydraulic liquid pressure exceeds the limit pressure value, device detecting the accidentally entered metal, and device reducing the limit pressure value, if state of the accidentally entered metal is identified.

EFFECT: method of control and hydraulic circuit ensure removal from the crusher of the subjects that can not be crushed, due to more quicker clearance increasing, thus reducing number of possible damaging strikes.

12 cl, 6 dwg