KONKROSS FORSEDD MED OVERLASTSEKRINGSANORDNING

摘要

A gyratory crusher whose wobbling crusher cone is supported by a spherical bearing on the upper end of a supporting shaft axially slidably mounted in a fixed tubular shaft is provided with a hydraulically operated adjusting device for the crusher cone. This adjusting device is formed by the bore in the fixed tubular shaft which is connected with a source of hydraulic liquid and the axially slidable supporting shaft acting as an axially slidable piston for adjusting the crusher cone selectively up and down. Furthermore an overload safety device is provided which comprises an at least partly yieldably constructed container which is filled with a prestressed compressible gas and removable from said tubular shaft in the upwardly direction. This container is substantially surrounded on all sides by the hydraulic liquid in the bore of said fixed tubular shaft.