A braking system for use with a crusher having a moving crushing member and a stationary crushing member. The braking system is positioned and is operable to restrict rotational movement of the moving crushing member. The braking system includes a braking disc or plate and one or more braking yokes that each include a magnetic member, such as a permanent magnet or an electric magnet. The braking disc is formed from an electrically conductive material and is perpendicular to the magnets of the braking yoke. Relative movement between the braking disc and the braking yoke induces an eddy current in the braking disc. The induced eddy current creates a magnetic force that opposes rotational movement of the moving crushing member. The braking system can be used with a compact eccentric crusher to restrict the rotation of a crushing roller during an idle mode.

A mineral material machining plant includes a hydraulic element including a connection area and a passage opening. An overload protection device includes a replaceable burst panel covering the passage opening. The burst panel includes a rear face, at least one bore, and at least one recess having a lateral insertion section open towards one side of the burst panel. A burst panel holder engages the rear face. In an assembled condition at least one fastening bolt passes through a bolt mount of the burst panel holder, the bore of the burst panel, and is threaded into a threaded mount of the connection area. In a disassembled condition at least one retaining element connects the burst panel holder to the hydraulic element and can be inserted laterally into and removed from the recess transversely to a plate plane of the burst panel.

A mineral material machining plant includes a hydraulic element including a connection area and a passage opening. An overload protection device includes a replaceable burst panel covering the passage opening. The burst panel includes a rear face, at least one bore, and at least one recess having a lateral insertion section open towards one side of the burst panel. A burst panel holder engages the rear face. In an assembled condition at least one fastening bolt passes through a bolt mount of the burst panel holder, the bore of the burst panel, and is threaded into a threaded mount of the connection area. In a disassembled condition at least one retaining element connects the burst panel holder to the hydraulic element and can be inserted laterally into and removed from the recess transversely to a plate plane of the burst panel.

A braking system for use with a crusher having a moving crushing member and a stationary crushing member. The braking system is positioned and is operable to restrict rotational movement of the moving crushing member. The braking system includes a braking disc or plate and one or more braking yokes that each include a magnetic member, such as a permanent magnet or an electric magnet. The braking disc is formed from an electrically conductive material and is perpendicular to the magnets of the braking yoke. Relative movement between the braking disc and the braking yoke induces an eddy current in the braking disc. The induced eddy current creates a magnetic force that opposes rotational movement of the moving crushing member. The braking system can be used with a compact eccentric crusher to restrict the rotation of a crushing roller during an idle mode.

A braking system for use with a crusher having a moving crushing member and a stationary crushing member. The braking system is positioned and is operable to restrict rotational movement of the moving crushing member. The braking system includes a braking disc or plate and one or more braking yokes that each include a magnetic member, such as a permanent magnet or an electric magnet. The braking disc is formed from an electrically conductive material and is perpendicular to the magnets of the braking yoke. Relative movement between the braking disc and the braking yoke induces an eddy current in the braking disc. The induced eddy current creates a magnetic force that opposes rotational movement of the moving crushing member. The braking system can be used with a compact eccentric crusher to restrict the rotation of a crushing roller during an idle mode.

A crusher device includes a jaw having a center block assembly with a first crushing jaw having surface on a first vertical side and a second crushing jaw having a surface on a second vertical side of the center block assembly wherein each surface has a diametrically-opposing arcuate plate surface, a first dual non-overlapping crushing roller mounted in space relation from the diametrically-opposing arcuate plate surface, a second dual non-overlapping crushing roller mounted in space relation from the diametrically-opposing arcuate plate and a toggle mechanism coupled to the center block assembly to create a toggling motion during a toggle cycle to move the center block assembly, which causes the center block assembly to, from a starting location, move in a first direction toward a first roller of the first jaw crushing channel, reach an end of the first direction, and subsequently return to the starting location.

A crusher device includes a jaw having a center block assembly with a first crushing jaw having surface on a first vertical side and a second crushing jaw having a surface on a second vertical side of the center block assembly wherein each surface has a diametrically-opposing arcuate plate surface, a first dual non-overlapping crushing roller mounted in space relation from the diametrically-opposing arcuate plate surface, a second dual non-overlapping crushing roller mounted in space relation from the diametrically-opposing arcuate plate and a toggle mechanism coupled to the center block assembly to create a toggling motion during a toggle cycle to move the center block assembly, which causes the center block assembly to, from a starting location, move in a first direction toward a first roller of the first jaw crushing channel, reach an end of the first direction, and subsequently return to the starting location.

A compact eccentric crusher includes a crusher jaw adjustment assembly for adjusting the size of the crushing gap between a crushing roller and a crusher jaw. The adjustment assembly includes a connection arm having a first end connected to a second end of the crusher jaw. A second end of the connection arm is connected to a slider that is mounted for movement along a slide rail. The adjustment assembly includes a drive unit operable to move the slider along the slide rail, resulting in corresponding movement of the connection arm and the second end of the crusher jaw. In one embodiment, the drive unit is a hydraulic cylinder having a cylinder rod connected to the slider. Upon an overload condition, the adjustment assembly allows the connection arm to move against the drive unit and the crusher jaw to move away from the crushing roller to adjust the crushing gap.

A compact eccentric crusher includes a crusher jaw adjustment assembly for adjusting the size of the crushing gap between a crushing roller and a crusher jaw. The adjustment assembly includes a connection arm having a first end connected to a second end of the crusher jaw. A second end of the connection arm is connected to a slider that is mounted for movement along a slide rail. The adjustment assembly includes a drive unit operable to move the slider along the slide rail, resulting in corresponding movement of the connection arm and the second end of the crusher jaw. In one embodiment, the drive unit is a hydraulic cylinder having a cylinder rod connected to the slider. Upon an overload condition, the adjustment assembly allows the connection arm to move against the drive unit and the crusher jaw to move away from the crushing roller to adjust the crushing gap.