Abstract: A crusher includes first and second crusher bodies defining a crushing gap. A hydraulic cylinder is coupled to one of the crusher bodies to adjust a width of the crushing gap. A pressure relief valve includes a pressure chamber communicated with the hydraulic cylinder. A pressure relief piston is movable between a closed position and an open position. The pressure relief piston includes at least one piston pressure surface delimiting the pressure chamber in the closed position transversely to the actuation direction of the piston, the pressure relief piston including a surface area at an end facing away from the pressure chamber, which surface area delimits the chamber area transverse to the actuating direction of the piston to transfer a closing force to the pressure relief piston in a closing direction of the closed position when pressure is applied in a chamber area.

Abstract: A crusher includes first and second crusher bodies defining a crushing gap. A hydraulic cylinder is coupled to one of the crusher bodies to adjust a width of the crushing gap. A pressure relief valve includes a pressure chamber communicated with the hydraulic cylinder. A pressure relief piston is movable between a closed position and an open position. The closed position blocks a fluid connection between the pressure chamber and a pressure equalization area exterior of the pressure relief valve. The pressure relief piston includes at least one piston pressure surface delimiting the pressure chamber in the closed position transversely to the actuating direction of the piston, wherein in the closed position of the pressure relief piston a projection of the at least one piston pressure surface in a projection plane transverse to the actuating direction of the pressure relief piston delimits only a part of the pressure chamber transverse to the actuating direction of the pressure relief piston.

Abstract: The invention relates to a crusher plant, in particular a jaw crusher, including a crushing unit for crushing mineral material, the crushing unit comprising a crushing chamber, to which a crusher outlet is assigned, via which crushed material exits the crushing chamber, at least one actuator being provided, by which the opening size of the crusher outlet is adjustable in the event of an overload situation in the crushing unit, in order to discharge faulty material from the crushing chamber, a belt conveyor being provided after the crusher outlet in the material conveying direction, faulty material being transportable by the belt conveyor from the crusher outlet, following an overload situation, toward a transfer end of the belt conveyor, a detection device being provided, by which the overload situation of the crushing unit or an operating change of the crushing unit brought about as a consequence of the overload situation is detected and an overload signal is then generated, and a control device controlling

Abstract: The invention relates to a crusher for mineral materials or recycled materials, in particular rotary impact crushers or jaw crushers, having a crusher unit (10), which has a movable first crusher body (11), in particular a rotor or a crusher jaw, wherein a second crusher body (14), in particular an impact rocker or a crusher jaw, is assigned to the first crusher body (11), wherein a crushing gap (15) is formed between the crusher bodies (11, 14), wherein a movable assembly of an overload triggering device (30) is coupled to the first or to the second crusher body (11, 14), wherein the movable assembly has a cylinder (25) of a hydraulic cylinder (20) or a piston (23) guided in the cylinder (20), wherein the movable assembly is designed to permit a motion of the coupled crusher body (11, 14) increasing the width of the crushing gap (15) in an evasive motion, wherein a pressure chamber (24) is formed in the hydraulic cylinder (20), which pressure chamber is delimited by a piston (23), and wherein the overload tr

Abstract: A high-pressure pump for the overload protection of a jaw crusher, with an actuator unit which adjustably receives an actuation element in a housing, wherein the actuation element has at least one piston, wherein at least one actuator, tensioning cylinder and a pressure accumulator are provided, wherein the actuator unit is in fluid-conveying connection with the actuator such that in one pump stroke of the actuator unit a transfer fluid is pumped into a second chamber of the actuator and of the tensioning cylinder and the quantity of transfer medium displaced from the actuator, and the tensioning cylinder during the pump stroke is temporarily stored in a pressure accumulator.

Abstract: The invention relates to a method for determining the layer height of a feed material, which is supplied to a crushing and/or screening plant of a material processing device, wherein a conveyor device is used to convey the feed material in a conveying direction, wherein a sensor array comprising a plurality of sensors is used to determine the layer height of the feed material. A reliable method that can be performed with little effort and without impairing the operation of the material processing device is achieved by the longitudinal axes of the detection volumes of the sensors extending at least partially in and/or counter to the conveying direction.

Abstract: The invention relates to a method for controlling and/or regulating the feed of material to be processed, in particular rock material, to a crushing and/or screening plant of a material processing device, wherein a conveyor device is used to guide the material to be processed to the crushing and/or screening plant, wherein a characteristic of the material to be processed is determined, and/or wherein a volume flow of the material to be processed is determined, and wherein a conveying speed of the conveyor device is controlled and/or regulated taking into account the characteristic and/or the volume flow of the material to be processed. The invention also relates to a material processing device designed to perform such a method.

Abstract: A rock processing machine is disclosed for crushing and/or grain size-dependent sorting of pourable rock material. The rock processing machine comprises a rock processing device having a crushing crusher device and a sorting screen, at least one camera system in whose field of view in the operation of the machine a surface of the pourable rock material is located, and a data processing device configured to process image data of the camera system via an artificial neural network. The data processing device is configured to ascertain at least one image area portion in image data recorded and transmitted by the camera system as an image object and to classify the ascertained image object by using the artificial neural network with respect to at least one object property from among a group of object properties comprising: object shapes; object sizes; object types; and/or object materials.

Abstract: The invention relates to a crusher plant, in particular a jaw crusher, including a crushing unit for crushing mineral material, the crushing unit comprising a crushing chamber, to which a crusher outlet is assigned, via which crushed material exits the crushing chamber, at least one actuator being provided, by which the opening size of the crusher outlet is adjustable in the event of an overload situation in the crushing unit, in order to discharge faulty material from the crushing chamber, a belt conveyor being provided after the crusher outlet in the material conveying direction, faulty material being transportable by the belt conveyor from the crusher outlet, following an overload situation, toward a transfer end of the belt conveyor, a detection device being provided, by which the overload situation of the crushing unit or an operating change of the crushing unit brought about as a consequence of the overload situation is detected and an overload signal is then generated, and a control device controlling

Abstract: 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.

Abstract: 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).