Abstract: An apparatus including a rotor position detection unit with a sensor configured to detect an angular position of a rotor of a horizontal shaft impact crusher, the rotor having attached thereon a group of hammers. A motor control system is configured to change the rotation speed of the rotor and an automation and control system is configured to control the motor control system in response to the detected angular position of the rotor. The rotor position detection unit is configured to detect a first and second angular position of the rotor corresponding to a first and second position of a hammer of the group of hammers attached to the rotor. The motor control system comprises a frequency converter and a brake configured to enable the stopping of the rotor.

Abstract: A mobile screen body and a mobile mineral material processing plant are disclosed that include a platform frame, a plurality of legs for supporting the platform frame to ground, a screen support frame supported by the platform frame movably between a transport position in which the screen support frame is adjacent to the platform frame and an operating position in which the screen support frame is elevated from the transport position, and a plurality of supports having first ends configured to be structurally coupled with the screen support frame, and second ends configured to be structurally coupled with respective ones of the plurality of legs, when the screen support frame is in the operating position. The supports are arranged in pairs that reside outside the platform frame in sideways direction.

Abstract: A screening arrangement including two side walls, each having an inward facing side and an outward facing side, and a screen holder arrangement extending between the inward facing sides of the side walls for use in connecting a first and a second screening element. The screen holder arrangement includes a first screen connector and a second screen connector. The first screen connector includes a pivotable element arranged to pivot about an axis that is parallel with a longitudinal extension of the first screen connector. The pivotable element includes a connection portion arranged to hold one end of the first screening element. The pivotable element is arranged to pivot between a first position and a second position, where the pivotable element is arranged such that when it is in the second position and a screen is connected to the pivotable element, particles larger than a predetermined size are prevented from passing between the first and second screen connectors.

Abstract: A movable material processing apparatus for handling material such as ore, gravel, rock or the like, that includes: a foldable conveyor for discharging material from the apparatus. The foldable conveyor is movable between a transport position and an operating position. The foldable conveyor includes a loading block arranged at the loading end, and a discharge block extending from the loading block towards a discharge end. The discharge block is pivotally coupled to the loading block along a first axis being perpendicular to a transport path of the foldable conveyor and parallel with a carrying surface of the foldable conveyor. The loading block is pivotally coupled to a support structure of the movable material processing apparatus along a second axis being parallel to the transport path.

Abstract: A screening arrangement including two side walls, each having an inward facing side and an outward facing side, and a screen holder arrangement extending between the inward facing sides of the side walls for use in connecting a first and a second screening element. The screen holder arrangement includes a first screen connector and a second screen connector. The first screen connector includes a pivotable element arranged to pivot about an axis that is parallel with a longitudinal extension of the first screen connector. The pivotable element includes a connection portion arranged to hold one end of the first screening element. The pivotable element is arranged to pivot between a first position and a second position, where the pivotable element is arranged such that when it is in the second position and a screen is connected to the pivotable element, particles larger than a predetermined size are prevented from passing between the first and second screen connectors.

Abstract: The present disclosure relates to a sealing member for a gyratory crusher having a main shaft and a mantle. The sealing member includes a first side and a second, opposing, side and the first side is arrangeable on a circumference of an inner wall of the mantle of the gyratory crusher and at least a portion of the second side is at a distance from the first side, the distance being not less than the difference between a radius of the inner wall of the mantle where the sealing member is arrangeable and a radius of the outer wall of the main shaft where the sealing is to contact the main shaft for sealing a space between the mantle and the main shaft. The sealing member provides an efficient and safe way of installing a mantle of a gyratory crusher.

Abstract: A mobile screen body and a mobile mineral material processing plant are disclosed that include a platform frame, a plurality of legs for supporting the platform frame to ground, a screen support frame supported by the platform frame movably between a transport position in which the screen support frame is adjacent to the platform frame and an operating position in which the screen support frame is elevated from the transport position, and a plurality of supports having first ends configured to be structurally coupled with the screen support frame, and second ends configured to be structurally coupled with respective ones of the plurality of legs, when the screen support frame is in the operating position. The supports are arranged in pairs that reside outside the platform frame in sideways direction.

Abstract: A mineral material processing plant, a crusher, a lubrication method and system, the system including a thrust bearing, a lubrication piston and adjusting piston arranged to be movable in a cylinder. The piston includes a first space configured to receive fluid and to continuously conduct the fluid to the thrust bearing. The cylinder and the piston define therebetween a second space configured to receive and hold fluid. The system is configured to, in response to detecting a downward movement of the piston, conduct fluid to the first space.

Abstract: The disclosure relates to a movable material processing apparatus for handling material such as ore, gravel, rock or the like, comprising: a foldable conveyor for discharging material from the apparatus, wherein said foldable conveyor is movable between a transport position and an operating position, said foldable conveyor comprising a loading block arranged at the loading end, and a discharge block extending from said loading block towards a discharge end, wherein said discharge block is pivotally coupled to said loading block along a first axis being perpendicular to a transport path of the foldable conveyor and parallel with a carrying surface of the foldable conveyor, and wherein said loading block is pivotally coupled to a support structure of said movable material processing apparatus along a second axis being parallel to said transport path.

Abstract: The invention concerns a mobile processing device having a material processing unit, such as a mobile crusher having a crusher unit or a mobile screen having a material screening unit. The mobile processing device comprises a power unit, a frame and a noise encapsulation for the material processing unit. The noise encapsulation is attached to the frame and comprises two cover elements, each of which is pivotable between an open position providing access to the crusher unit and a closed position wherein the cover elements can be interconnected to create an encapsulation for the material processing unit.

Abstract: A nut lifting tool of an inner wear part of a cone crusher. The lifting tool has a frame to be placed around a nut to be lifted. The frame has nut lifting lugs for supporting occurring from at least three sides of the center of gravity of the nut and frame suspension brackets for suspending the frame from the nut before lifting the nut. The frame also has an open side for receiving a nut, lateral limiters, which, together with the lifting lugs and the suspension brackets, form a nut receiving space such that the frame can be slid from the open side to surround the nut, and lifting connection pieces for connecting a crane to the frame.

Abstract: 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.

Abstract: A cone or gyratory crusher, including a slip ring, a crusher head, and a first sealing member, arranged between the slip ring and the crusher head, defining a first space above the first sealing member. A first flexible member is connected to the first sealing member and defines a second space below the first sealing member.

Abstract: The disclosure relates to a cone crusher, including a supporting device being arranged inside a cavity of a main shaft of the crusher. The supporting device is arranged to support a crushing head, and to be vertically displaceable for adjusting the width of a crushing gap. The supporting device has an upper portion enclosed by the crushing head, the upper portion being arranged to provide support to the crushing head. A lower portion extends downwards within the cavity of the main shaft, wherein the upper portion and the lower portion have different outer dimensions as defined transverse to the shaft axis. A pressure-active surface is formed at a transition between the upper portion and the lower portion so as to form a variable-volume compression chamber within the cavity below said pressure-active surface.

Abstract: An adjusting apparatus of a feed opening of a crushing chamber of a crusher includes one or more adjusting parts arranged in connection with the feed opening, which one or more adjusting parts is/are movable during crushing for adjusting a flow area of material which is to be crushed and is flowing through the feed opening to the crushing chamber. The front edges of the adjusting parts form a unitary flow opening, the flow area of which is adjustable by moving one or more adjusting parts. An adjusting system includes the adjusting apparatus for a feed opening of a crushing chamber of a crusher. A method for adjusting a pressing crusher or a crushing plant suitable for mineral material crushing. A method for avoiding a start peak of a crusher. A method for limiting power intake and/or crushing pressure of a crusher.

Abstract: A method, crusher, computer program and crushing plant, in which bridging generated on an arm is detected in a crusher that has a body, an outer wear part fixed to the body, an outer wear part fixed to the body; a support cone rotatable inside the body via a main shaft); an inner wear part on a cone surface of the support cone; and a support of the support cone. The support contains a group of arms inside the body and extending inwards from the body; a main shaft radially supported to the arms; and a thrust bearer supported by the arms for supporting the main shaft and for axially supporting the support cone via the main shaft. The crusher crushes mineral material between the inner wear part and the outer wear part. Measurement information is received describing stress of the support of the support cone; and bridging formed onto an arm is detected from the measurement information.

Abstract: A mineral material processing plant and a method for controlling thereof. The processing plant includes at least one motor, at least one actuator, a control and adjusting system, a switch for switching the processing plant to a standby mode and an arrangement for keeping selected actuators in operation with a reduced standby speed. In the method, a command is given to the processing plant to switch to the standby mode and in response to the command to switch to the standby mode, feeding of mineral material to the processing plant is limited and speed of the motor or motors of the processing plant is reduced from the processing speed (Rf) to a reduced standby speed (Rsb) and it is ensured that selected actuators of the processing plant remain operating with a reduced speed.

Abstract: A gyratory or cone crusher includes a measuring apparatus suitable for measuring load of the crusher, a first element placed on a main shaft of the crusher and a first detector suitable for detecting the first element which first detector provides a trigger starting a measurement revolution, and at least one second element placed on a drive shaft of the crusher and a second detector suitable for detecting the second element and providing a trigger corresponding to a certain rotational position of an inner blade of the crusher. The system includes an output to a screen for presenting the loads or averages of the loads corresponding to rotational positions of the inner blade of the crusher. Detections of the monitoring system can be used for controlling and monitoring a crushing event, such as by changing an area or a location of a feed opening of the crusher.

Abstract: A jaw crusher, a mineral material processing plant and a method for processing mineral material. The jaw crusher includes a fixed jaw and a movable jaw for forming a crushing chamber therebetween which is open at the top. The fixed jaw includes a first wear part mounted thereto and the movable jaw includes a pitman and a second wear part mounted thereto. The pitman is rotatably mounted to a first eccentric shaft. The pitman is further rotatably mounted to second eccentric shaft configured to guide the stroke of the movable jaw to create a movement pattern with a substantially linear crushing stroke, wherein the eccentricity of the second eccentric shaft is larger than that of the first eccentric shaft.

Abstract: A method for compressing or decompressing a spring loading a tie rod in a jaw crusher. The tie rod is supported by, at one location, a pendulum of the jaw crusher and, at another location, the jaw crusher's frame through the said spring. The spring is installed between the jaw crusher's frame and a second spring support supported by the tie rod; and the second spring support is moved in relation to the tie rod. A support part of the tightening device and at least two moving screws supported by the support part are arranged to influence the second spring support. The support part is supported by the tie rod through a locking member; and the at least two moving screws supported by the support part are moved to change the distance between the second spring support and the support part.