Abstract: A mineral material crusher and method of operating a mineral material crusher that includes: a body, a rotating crusher element, a drive shaft arrangement that supports the rotating crusher element to the body and to rotate the rotating crusher element, and a motor including a rotor for driving the drive shaft arrangement. The motor is formed inside the rotating crusher element and the drive shaft arrangement is configured to form of the rotor a rotating axle that is rigidly coupled with the rotating crusher element and capable of leading torque from the rotor to the rotating crusher element for rotating the crusher element around the drive shaft.

Abstract: A cone crusher having a frame, an outer blade adapted to be locked to the frame, an inner blade eccentrically and vertically movable relative to the outer blade, and the inner blade and the outer blade define there between a crushing chamber, a main shaft which is stationary relative to the frame, an eccentric bearing-mounted on the main shaft, a support cone on which the inner blade is arranged, and an adjustment shaft by means of which the support cone is vertically movable from below. A hollow space is arranged inside the main shaft, the adjustment shaft is arranged to the hollow space, a load cylinder is arranged to a lower end of the main shaft which load cylinder comprises an adjustment piston acting to a lower end of the adjustment shaft, a pressure medium supply is arranged to a pressure volume under the adjustment piston for moving vertically the adjustment shaft, and a lubricant supply is arranged above the adjustment piston for directing lubricant via the hollow space to targets to be lubricated.

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 crusher comprising at least a main shaft having an axial line and being mounted on the inner frame of the crusher, an eccentric comprising at least a first eccentric bushing and a second eccentric bushing, a first crushing blade, and a second crushing blade. The first crushing blade is fitted to move along an eccentric path, which path can be adjusted by changing the mutual position of the first eccentric bushing and the second eccentric bushing of the eccentric. The second eccentric bushing comprises a gear transmission for rotating the eccentric, and the crusher comprises adjusting means for changing the mutual position of the gear transmission of the first eccentric bushing and the gear transmission of the second eccentric bushing.

Abstract: The fastening of a mantel to a head of a cone crusher with a fastening device. A first part of the fastening device is fastened to the head of the cone crusher. A second part of the fastening device is situated against the mantel and the second part is forced towards the first part with a tightening means.

Abstract: A crusher and a method for controlling a crusher having a first crushing member and a second crushing member defining a crusher setting of a crushing cavity into which material to be crushed is being fed. The method having the steps of: measuring continuously instantaneous load on the crusher; recording instantaneous load peaks exceeding a predetermined target level for the load peaks; keeping track of the number of the load peaks exceeding the predetermined target level during a predetermined period of time; and controlling loading of the crusher on the basis of the number of the load peaks experienced by the crusher during the predetermined period of time.

Abstract: A crusher comprising at least a main shaft having an axial line and being mounted on the inner frame of the crusher, an eccentric comprising at least a first eccentric bushing and a second eccentric bushing, a first crushing blade, and a second crushing blade. The first crushing blade is fitted to move along an eccentric path, which path can be adjusted by changing the mutual position of the first eccentric bushing and the second eccentric bushing of the eccentric. The second eccentric bushing comprises a gear transmission for rotating the eccentric, and the crusher comprises adjusting means for changing the mutual position of the gear transmission of the first eccentric bushing and the gear transmission of the second eccentric bushing.

Abstract: A crusher and a method for controlling a crusher comprising a first crushing member and a second crushing member defining a crusher setting of a crushing cavity into which material to be crushed is being fed. The method comprises the step of: measuring continuously instantaneous load on the crusher; recording instantaneous load peaks exceeding a predetermined target level for the load peaks; keeping track of the number of the load peaks exceeding the predetermined target level during a predetermined period of time; and controlling loading of the crusher on the basis of the number of the load peaks experienced by the crusher during the predetermined period of time.

Abstract: A hydraulically adjustable cone crusher and a axial bearing assembly of a cone crusher, which crusher comprises an hydraulic adjustment cylinder/piston assembly mounted in the space formed between the crushing head and the upper surface of the main shaft for adjusting the setting of the crusher. The pressure medium of the hydraulic adjustment system of the crusher is supplied to the pressure medium space formed, except by the adjustment cylinder/piston assembly, also by at least one bearing element.

Abstract: A method for forming a joint between a product formed of composite material including reinforcing fibers and a connecting piece includes forming the connecting piece with a shoulder within a joint region thereof and during the formation of the product, guiding the longitudinally extending reinforcing fibers of the composite material as continuous, unitary fibers through a first path within the joint region of the connecting piece toward the connecting piece shoulder, around the shoulder of the connecting piece, and then in a substantially opposite direction through a second path within the joint region of the connecting piece to return to the composite material of the product, whereby both the product of composite material and the joint between the product and the connecting piece are formed simultaneously.

Abstract: Method and device for collecting objects pointing out of the bottom level of seas or corresponding water areas so that the objects are carried from the bottom by using waterflow through an intake opening of the collecting device moving on the bottom of the sea. The objects are removed from the bottom by a removing device. The lowermost part of the removing device moves at the same level with the bottom of the water area or above it. The most suitable way of removing the objects from the bottom is by using water spray, the flow power of which is controlled separately from the flow power of the water in the conveying channel.