Sandvik Intellectual Property Ab

Sandvik Mining and Construction Oy

Patric Malmqvist

Bengt-Arne Eriksson

Mikael M Larsson

Axel Bergman

Frederik Eriksson

Gustav Bern

Niklas Aberg

Fredrik Eriksson

Jan H Johansson

Anders Hallberg

Matts-Ake Nilsson

Arvid Svensson

Anne Holmberg

Zeljko Nikolic

Niklas Åberg

Niklas ÅBerg

Matts-ÅKe Nilsson

Fredrik M Eriksson

A gyratory crusher main shaft assembly has a main shaft, an axially upper region of the main shaft including a tapered conical section with a protective sleeve friction fitted over the cone. To facilitate mounting and dismounting of the sleeve, at least one groove is indented within a radially external facing surface of the main shaft at the region of the cone to allow fluid to be introduced under pressure to the region between the sleeve and the cone.

Gyratory crusher main shaft and assembly

A gyratory crusher includes an eccentric having an inner slide bearing surface and an outer slide bearing surface, the inner slide bearing surface defining, together with an opposing slide bearing surface, an inner slide bearing. The outer slide bearing surface defines, together with another opposing slide bearing surface, an outer slide bearing. The eccentric is rotatably connected to a crusher frame so as to allow a rotation about an eccentric axis of rotation, which is fixed relative to the frame. The eccentric axis of rotation is defined by one of the inner and outer slide bearings. The inner slide bearing has a total height-to-diameter quotient (H/D) of less than 1.0.

Gyratory crusher and slide bearing lining

A gyratory crusher frame part and a gyratory crusher include a topshell and spider assembly configured to minimize stress concentrations. An annular flange is formed at the junction between a lower region of each spider arm and an upper region of the topshell. Optimization of loading force transfer and a reduction in stress concentration is achieved by positioning the spider arms radially inward relative to an outer circumferential perimeter of the flange.

Gyratory crusher frame

A crusher wear resistant liner for positioning at a crusher bottom shell includes a plurality of modular wear resistant plates mountable at an inside surface of the bottom shell and positioned side-by-side to surround and protect the bottom shell interior. To prevent independent dislodgement of each plate and liner, respective inter-engaging formations are provided at each plate to contact at least one adjacent plate of the assembly to arrest any unintentional downward movement in the event that the primary fixings become ineffective.

Crusher wear resistant liner

A gyratory crusher crushing head, removably mounted a crushing shell, includes a circumferential groove is formed in an outer facing surface of the crushing head. The groove is positioned towards a second lower end at the outward facing surface relative to an axial length of the crushing head. The groove and its relative axial positioning minimizes the stress concentrations at the crushing head resulting from forces tangential to the outward facing surface.

Gyratory crusher crushing head

Crusher feed hopper wear protection cassette

A gyratory crusher frame part includes a topshell mountable on a bottom shell, the topshell having an annular wall extending around a longitudinal axis. A spider having a plurality of arms extending radially outward from a cap is positioned at the longitudinal axis. Each arm has a first portion extending in a radially outward direction from the cap and a second portion extending in an axial direction from an outer region of the first portion. An annular flange is positioned between the second portion of each arm and the annular wall. The annular wall is defined between an outward and inward facing surface of the annular wall. A section of the wall neighboring the flange includes a concave section at the outward facing surface. A first half of the concave section closest to the flange is a substantially uniform curve extending continuously in the circumferential direction around the longitudinal axis.

Gyratory chrusher frame

A crusher feed distributor for mounting at a crusher input hopper of a crusher. The feed distributor includes a guide body to contact and distribute the flow of feed material and a mounting assembly to mount the guide body at the input hopper. The mounting assembly is specifically configured with a plurality of independent mounts that collectively provide four adjustments and decrease of freedom corresponding to three lateral adjustments and one rotational adjustment.

Crusher feed distributor

A gyratory crusher spider arm shield is configured for releasable attachment to a spider arm. The shield includes a main body having an underside foot for engaging onto an upper region of the arm. The secure attachment is provided by cooperation between an attachment element that extends radially inward from an outermost end of the shield and a mount guide provided at sidewalls of the shield that extend laterally each side of the spider arm.

Gyratory crusher spider arm shield

Gyratory crusher

Feed hopper

Crusher feed hopper hatch assembly

Growing community of inventors

Svedala, Sweden

Patric Malmqvist