An arrangement for dust blocking in a cone crusher, a cone crusher, and a method for the dust blocking and manufacturing the cone crusher, in which a crusher head is supported by a support cone. A linear actuator vertically moves the crusher head for setting adjustment and/or tramp iron release. A lower surface of the support cone, at least in part, defines a downwards opening annular cavity. The crusher head radially movably supports a seal ring. A lip is formed for the annular cavity by the seal ring. A slip ring extends into the annular cavity beyond the seal ring and forms a counter-surface for the seal ring. The slip ring at least in part defines a pressurised gas supply channel and an entry channelling interconnecting the pressurised gas supply channel to the annular cavity.

A gyratory crusher shell has an annular wall extending around a longitudinal axis. A plurality of ears project radially outward from an annular rim of the topshell with each ear including a respective lug to sit within a corresponding recess at an annular rim of the topshell to rotatably lock the crushing shell at the topshell.

The present disclosure relates to a cone-shaped crusher. The cone-shaped crusher includes a main shaft, a mantle core assembly which is coupled to and movable up and down the main shaft, and a crushing gap control support positioned below the mantle core assembly and fixed to the main shaft. In addition, the crushing gap control support has an annular cylindrical unit extending upward therefrom and receiving a piston unit which extends downward from the mantle core assembly so that the piston unit is movable up and down in the cylindrical unit. The whole mantle core assembly formed with the piston unit moves up and down by a pressure of hydraulic oil flowing in and out of an internal space of the cylindrical unit.

A method, crusher, computer program and crushing plant, in which bridging generated on an arm is detected in a crusher that has a body, an outer wear part fixed to the body, an outer wear part fixed to the body; a support cone rotatable inside the body via a main shaft); an inner wear part on a cone surface of the support cone; and a support of the support cone. The support contains a group of arms inside the body and extending inwards from the body; a main shaft radially supported to the arms; and a thrust bearer supported by the arms for supporting the main shaft and for axially supporting the support cone via the main shaft. The crusher crushes mineral material between the inner wear part and the outer wear part. Measurement information is received describing stress of the support of the support cone; and bridging formed onto an arm is detected from the measurement information.

A gyratory crusher topshell and topshell assembly including an outer crushing shell and optional intermediate spacer ring. The topshell has a radially inward facing surface that is divided into a plurality of regions including an upper and lower mount region axially separated by an intermediate annular rib. The rib enables the topshell to be compatible with a variety of different sized and shaped concaves optionally using an intermediate spacer ring without the need for a backing compound.

A cone crusher may include a crushing cone held on a driven eccentric bushing. The eccentric bushing may rotate in a radial direction about a spindle. The spindle may be fixedly clamped in a spindle receptacle provided in a housing lower part. The spindle may comprise a cylindrical upper bearing portion that is braced in a bore that forms the spindle receptacle by way of an upper mechanical clamping device.

A bearing assembly for a cone crusher includes an inner slide bearing, an eccentric sleeve and an outer slide bearing arranged for supporting a lower portion 5 of a crushing head shaft. The inner slide bearing has a diameter D1 and an axial height H1 being defined from the inner slide bearing upper end to the inner slide bearing lower end. The outer slide bearing 40 has a diameter D2 and an axial height H2 being defined from the outer slide bearing upper end to the outer slide bearing lower end 40b. A ratio of the inner slide bearing axial height and its diameter H1/D1 is in the range of 0.95 to 1.20. A cone crusher including the bearing assembly is also provided.

A cone crusher with a bottom spring adjustment type mechanism is provided. The cone crusher includes a bottom frame, an upper frame, an eccentric mechanism arranged on the bottom frame, a main shaft arranged on the eccentric mechanism, a movable cone fixed on the main shaft above the eccentric mechanism, and a fixed cone arranged in the upper frame. A discharge port is formed between the fixed cone and the movable cone. A bottom spring mechanism is arranged in or connected to the bottom frame. An upper end of the bottom spring mechanism elastically supports the main shaft through a thrust bearing unit. By using the bottom spring mechanism to elastically support the main shaft, the solution has the advantages of simple structure, low costs, and convenient maintenance. Furthermore, a problem of wear of a sealing member due to the use of a hydraulic cylinder technology is avoided.