A method for operating a mineral material crusher, a system including a crusher, and a crushing plant. The mineral material crusher, includes a first crushing element and a second crushing element, defining a crusher gap therebetween. The crusher gap is maintained using at least one hydraulic cylinder, the hydraulic liquid pressure in at least one of the hydraulic cylinders is measured and hydraulic liquid is evacuated from the hydraulic cylinder when the hydraulic liquid pressure exceeds a set opening pressure limit. During the crushing process the following steps are repeated: generating, based on the hydraulic liquid pressure measurement, a representative value of a normal hydraulic liquid pressure in the at least one hydraulic cylinder caused by the crushable material in that crushing application; comparing the generated representative value and the set opening pressure limit; and selecting opening pressure limit which is higher than the measured normal hydraulic liquid pressure.

A method for operating a mineral material crusher, a system including a crusher, and a crushing plant. The mineral material crusher, includes a first crushing element and a second crushing element, defining a crusher gap therebetween. The crusher gap is maintained using at least one hydraulic cylinder, the hydraulic liquid pressure in at least one of the hydraulic cylinders is measured and hydraulic liquid is evacuated from the hydraulic cylinder when the hydraulic liquid pressure exceeds a set opening pressure limit. During the crushing process the following steps are repeated: generating, based on the hydraulic liquid pressure measurement, a representative value of a normal hydraulic liquid pressure in the at least one hydraulic cylinder caused by the crushable material in that crushing application; comparing the generated representative value and the set opening pressure limit; and selecting opening pressure limit which is higher than the measured normal hydraulic liquid pressure.

Embodiments provide a method for removably mounting at least one wiper ring to the underside of a cone head of a cone crusher. The method includes the following steps in the order recited: inducing a temperature difference between the cone head and the at least one wiper ring; mounting the at least one wiper ring to an underside of the cone head while maintaining the temperature difference; and holding the at least one wiper ring against the underside of the cone head while the temperature difference dissipates. The temperature difference may be induced by either cooling the at least one wiper ring or by heating the cone head, or both.

Embodiments provide a method for removably mounting at least one wiper ring to the underside of a cone head of a cone crusher. The method includes the following steps in the order recited: inducing a temperature difference between the cone head and the at least one wiper ring; mounting the at least one wiper ring to an underside of the cone head while maintaining the temperature difference; and holding the at least one wiper ring against the underside of the cone head while the temperature difference dissipates. The temperature difference may be induced by either cooling the at least one wiper ring or by heating the cone head, or both.

The present disclosure discloses a multi-gradient structure-reinforced cone crusher and a design method of a lining plate thereof. The multi-gradient structure-reinforced cone crusher includes a movable cone and a fixed cone arranged around the movable cone, and a crushing cavity formed in the radial space between the fixed cone and the movable cone, the surfaces of the fixed cone and the movable cone that are opposite to each other are respectively provided with a fixed cone lining plate and a movable cone lining plate, the working faces of the fixed cone lining plate and the movable cone lining plate that face the crushing cavity are provided with multiple sets of cast-in alloy, which are different in at least one of distribution density, maximum size of exposed surface and shape of the cast-in alloy in a direction from the feed port to the discharge port.

The embodiments of the present invention provide a crushing cavity structure for the technical field of crushing cavities of cone crushing equipment. The crushing cavity structure comprises: a first crushing cavity structure for through-crushing an input material having a first material characteristic, the first crushing cavity structure has a first crushing cavity and a first lining plate structure that match the first material characteristic, and the first crushing cavity and the first lining plate structure form a first-stage material crushing channel; a second crushing cavity structure for through-crushing a first-stage material having a second material characteristic, the first-stage material is obtained by the input material passing through the first-stage material crushing channel, the second crushing cavity structure has a second crushing cavity and a second lining plate structure that match the second material characteristic, and the second crushing cavity and the second lining plate structure form a second-stage material crushing channel.

A novel gear well (200) for a crusher (1) may be characterized in that the recess (210) comprises a helical, non-uniform depth recess having a high point (212A) and a low point (212B). The gear well (200) may be further characterized in that rather than extending to a sharp corner transition (112) and then to an orthogonal sidewall (126), the floor (211) of the recess (210) may instead intersect or blend with the pinion clearance floor (222) adjacent the low point (212B). The helical, non-uniform depth recess (210) is preferably configured for improving the strength of a gear well (200) and/or configured for mitigating oil frothing within the gear well (200), without limitation.

A mantle is provided that is disposed over a cone head of a cone crusher, including an outer surface designed to cooperate with a crusher liner to crush rocks that enter a crushing zone between the outer surface of the mantle and the crusher liner. Also provided is a mantle nut and washer assembly for mounting the mantle to the cone head. The mantle includes a flange extending around an inner surface of the mantle between the inner surface of the mantle and the mantle nut and washer assembly to absorb heat generated when performing cutting operations to remove and replace the mantle.

A mantle is provided that is disposed over a cone head of a cone crusher, including an outer surface designed to cooperate with a crusher liner to crush rocks that enter a crushing zone between the outer surface of the mantle and the crusher liner. Also provided is a mantle nut and washer assembly for mounting the mantle to the cone head. The mantle includes a flange extending around an inner surface of the mantle between the inner surface of the mantle and the mantle nut and washer assembly to absorb heat generated when performing cutting operations to remove and replace the mantle.

A system for maintaining a downward force on a central shaft of a cone crusher having a stationary frame, including a disc fixedly mounted to the frame, the disc having a centrally-disposed aperture with a first diameter. A plate is mounted to an end cap, the plate having a second diameter that is greater than the first diameter. The plate is disposed distally of the disc and the end cap is disposed proximally of the disc. A housing is fixed to the central shaft and biased away from the end cap wherein a downward bias is imparted to the central shaft.