A jaw crusher assembly comprising a jaw crushing apparatus and a service platform. The jaw crushing apparatus having first and second opposing jaws, each opposing jaw having a crushing face. The crushing faces opposing each other in an oblique relationship when the opposing jaws are in an at least partially opened state. The service platform provides at least two service configurations within the opposing jaws and being operable between a first service configuration and a second service configuration by rotation of the service platform.

The invention relates to a jaw crusher having a stationary crusher jaw (21) and having a movable crusher jaw (22), between which a crushing chamber (23) and a crushing gap (24) are formed, wherein the movable crusher jaw (22) can be driven by a crusher drive (30) to generate a crushing motion, wherein an overload protection mechanism is assigned to one of the crusher jaws (21,22), preferably to the movable crusher jaw (22), wherein the overload protection mechanism comprises a control unit (60), which, in the event of an overload, causes the crusher jaws (21,22) to move relative to one another in such a way that the crushing gap (24) is enlarged. In such a jaw crusher, an improved operation can be achieved if provision is made that an actuator unit (100) is driven by means of the kinetic energy of a driven component of the jaw crusher, in particular the flywheels or the crusher drive (30) driving the flywheels and the movable crusher jaw, and that at least one actuator (80) is acted upon by the actuator unit (100) using a transfer medium to effect the gap adjustment.

The present invention relates to a rock processing machine having functional units that are activatable and deactivatable, and having a control panel (50) that switches the rock processing machine, in a starting switching operation, from a less-active operating state into a more-active operating state with more activated functional units and, in a stopping switching operation, switches it from a more-active operating state into a less-active operating state with fewer activated functional units; the control panel (50) comprising a plurality of state switching elements (74, 80, 94, 96) with which, for at least one functional unit, a state transition is associated in such a way that actuation of the state switching element (74, 80, 94, 96) on the functional unit brings about a state transition. According to the present invention, only exactly one state transition is associated with each state switching element (74, 80, 94, 96) for at least one functional unit, so that a first set (58) of switching elements (70, 72, 74, 80) participates in the starting switching operation, and a second set (60) of switching elements (94, 96), different from the first, participates in the stopping switching operation; each set (58, 60) being arranged in a visually and/or haptically perceptible spatial arrangement relationship that corresponds to a predetermined actuation sequence of the switching elements (70, 72, 74, 80, 94, 96) of the respective set (58, 60).

A tramp iron relief system for a crusher. The preferred system includes a tramp iron relief cylinder, a relief valve adapted to open when oil pressure within said tramp iron relief cylinder exceeds a pre-designated limit, a tramp iron relief cylinder manifold block that is adapted to control the flow of oil into and out of the tramp iron relief cylinder, a tension cylinder, a tension cylinder manifold block adapted to control the flow of oil into and out of the tension cylinder, a tank line accumulator, and a hydraulic line to convey oil between the tank line accumulator, the tramp iron relief cylinder, and the tension cylinder. A method for controlling the movement of the tramp iron relief cylinder including reducing the pressure in the rod end of the tramp iron relief cylinder during normal operations of the crusher.

A tramp iron relief system for a crusher. The preferred system includes a tramp iron relief cylinder, a relief valve adapted to open when oil pressure within said tramp iron relief cylinder exceeds a pre-designated limit, a tramp iron relief cylinder manifold block that is adapted to control the flow of oil into and out of the tramp iron relief cylinder, a tension cylinder, a tension cylinder manifold block adapted to control the flow of oil into and out of the tension cylinder, a tank line accumulator, and a hydraulic line to convey oil between the tank line accumulator, the tramp iron relief cylinder, and the tension cylinder. A method for controlling the movement of the tramp iron relief cylinder including reducing the pressure in the rod end of the tramp iron relief cylinder during normal operations of the crusher.

The invention relates to a high-pressure pump for the overload protection of a crusher unit (20), in particular a jaw crusher, with an actuator unit (100) which adjustably receives an actuation element (110) in a housing (100.1), wherein the actuation element (110) has at least one piston (110.1, 110.2) or the actuation element (110) is connected to at least one piston (110.1, 110.2), wherein at least one actuator ((80), tensioning cylinder (40)) and a pressure accumulator (150) are provided, wherein the actuator unit (100) is in fluid-conveying connection with the actuator (80) such that in one pump stroke of the actuator unit (100), a transfer means is pumped into a second chamber (40.1, 80.2) of the actuator ((80), tensioning cylinder (40)) and the quantity of transfer medium displaced from a further first chamber (40.2, 80.1) of the actuator ((80), tensioning cylinder (40)) during the pump stroke is temporarily stored in a pressure accumulator (150). Such a high-pressure pump can be used, in the case of an overload, to effectively act on the support system of the crushing jaws (21, 22) to let the uncrushable or hard to crush object escape from the crushing jaws by allowing the crushing jaws to move away from one another.

A resettable relief system for a crusher is provided. A first linkage member is connected to a material crushing portion of the crusher is connected to a second linkage member in a hinged manner. A hydraulic device exerts forces to the linkage members sufficient to maintain them in an unrelieved position, until forces exerted on the linkage members from the material crushing portion exceed a predetermined threshold, and then permit said first and second linkage members to move into a relieved position.

A method is provided for dynamically monitoring material quality in a comminution system comprising a material crushing stage and a discharge stage. An imaging device captures images of comminuted material in the discharge stage, and characteristic features are extracted from the captured image for analysis with respect to at least one boundary condition. Output signals are accordingly generated corresponding to a determined comminution state of the comminuted material in the discharge stage. In one example, a crushing gap in the crushing stage is adjusted if the comminution state indicates material (or an amount of material) above a threshold size in the discharge stage. In another example, pre-screen settings in a pre-screen stage of the comminution system are adjusted if the comminution state indicates material (or an amount of material) below a threshold size in the discharge stage. Other comminution states and responses may, e.g., correspond to non-compliant material shapes, etc.

The invention relates to an apparatus for comminuting of material. The apparatus includes a first conveyor structure with a first conveyor surface, a second conveyor structure with a second conveyor surface, and in which apparatus the first conveyor surface and the second conveyor surface are set facing each other. The conveyor surfaces are arranged to define a comminuting space in the apparatus, The apparatus has means for bringing the conveyor surfaces in a movement in the direction of movement D where the two conveyor surfaces placed to face each other are arranged to move from a first end of the conveyor structures towards a second end of the conveyor structures. The conveyor surfaces positioned to face each other are placed in a convergent manner so that the gap between the conveyor surfaces narrows when examined in the movement direction of the conveyor surfaces, so that the advancing movement of the conveyor surfaces is arranged to bring about compression in the material being comminuted. In the invention, the conveyor surfaces are in a double-converging manner so that in addition to said convergence in the movement direction, the conveyor surfaces are additionally placed in a convergent manner so that the gap between the conveyor surfaces also narrows in the transverse direction in relation to the movement direction, said comminuting space thus becoming double-converging.

An apparatus for comminuting of material that includes a first conveyor structure with a first conveyor surface, a second conveyor structure with a second conveyor surface, and in which apparatus the first conveyor surface and the second conveyor surface are set facing each other. The conveyor surfaces are configured in a double-converging manner so that in addition to said convergence in the movement direction, the conveyor surfaces are additionally placed in a convergent manner so that the gap between the conveyor surfaces also narrows in the transverse direction in relation to the movement direction, such that the comminuting space becomes double-converging.