The invention relates to a linking device for coupling working equipment, such as a head for harvesting trees, to the end of a crane boom on a working machine, said end comprising crane ears, wherein the linking device comprises a linking device body that supports a first rotation shaft defining a first rotation axis and a second rotation shaft defining a second rotation axis that runs substantially transverse to the first rotation axis, wherein the linking device is intended to be suspended by the first rotation shaft between the crane ears for free rotation of the linking device around the first rotation axis on the crane boom, wherein the linking device comprises first braking means for braking the rotational movement of the linking device around the first rotation axis, wherein the first braking means are arranged to move at least one of the crane ears towards the other to clamp the linking device body between the crane ears.

This invention relates to off-road work machines and to unloading an off-road work machine and particularly to an arrangement and a method for controlling the unloading of a forestry machine. It is characteristic of a method according to the invention for controlling unloading of a forestry machine (10), in which the forestry machine (10) comprises a load space (11) for a timber load (22), a boom structure (12) and a wood-handling tool (16) attached to said boom structure, that the method comprises the steps of: defining and noting down (43), (44) the location (20) of the timber pile, calculating and noting down the location of the edge of the timber pile, picking (45) a timber bundle from the timber load (22) by the wood-handling tool (16), calculating (46) the distance of the end justified on a load screen (13) of the edge of said timber bundle from the wood-handling tool (16), calculating an unloading location for said timber bundle in the defined location (20) of the timber pile, and controlling and unloading (47) said timber bundle into the timber pile in the said calculated unloading location such that one edge of the timber pile becomes even and straight.

A feed roller assembly of a harvester head of a forestry machine includes a pivoted arm operated by a hydraulic cylinder and a feed roller and one operating device attached to the pivoted arm having an attachment hub driving the feed roller, the feed roller includes at least one attachment flange, at least two toothed discs, spacer pieces between at least the attachment flange and the toothed discs, attachment bolts connecting the attachment flange, the toothed discs, and the spacer pieces to form the feed roller as a bolted construction, and a cleaning comb attached to the arm for cleaning gaps formed between each pair of components when the feed roller is rotating.

A mobile working machine, in particular a forestry machine, is disclosed which is provided with a chassis, a drive unit, a rope winch, a stanchion and an adjustable ramp plate located on the rear end of a vehicle body. The working machine does not have a driver workplace for an operator and is in the form of a remotely controlled working machine. The ramp plate is provided with at least one fastening interface, to which an additional stanchion can be releasably fastened, and/or the ramp plate is provided with a fastening interface to which a trailer hitch head can be releasably fastened.

A grapple-heel rack having a frame, a grapple, and first and second angle-enabler catches. A grapple attachment (which may be or may include a universal joint) may be used to support the grapple from a nose of the frame. A mechanical grapple return system may be used to return the grapple from anon-neutral position to a neutral position. At least one method for using the grapple-heel rack.

A forestry winch that has a rope drum driven by a drive motor and an ejector roller driven by an additional drive motor is disclosed. A rope is guided from the rope drum to the ejector roller and is guided over the ejector roller. The additional drive motor is located on the ejector roller and is connected to an energy supply device by means of energy supply lines. Provided on the ejector roller a protective device, which covers the energy supply lines located in the area of the additional drive motor and protects them from mechanical damage.

The present invention relates to a system for remote and/or autonomous cutting at least a portion of a harvested tree trunk, at least a portion of a tree trunk to be harvested, at least a portion of a tree trunk during harvesting or at least a portion of a tree trunk during transporting, said system comprising: a remotely and/or autonomously controlled Unmanned Aerial Vehicle (100), UAV, means (116) for cutting at least a portion of a tree trunk attachable to said UAV (100), means for detecting at least a portion of a tree (135), means for detecting at least one tree parameter of at least a portion of a tree (135) and/or at least one growing condition of at least a portion of a tree (tree), a base station (120) for communication with said UAV (100), and means configured for selecting at least one cutting position on at least a portion of a tree trunk depending on the at least one detected tree parameter and/or the at least one detected growing condition of at least a portion of a tree (135).

A detection system includes a plurality of support posts, cables supported by the support posts, a winding device operable to wind the cable, a lifting and lowering device that is connected to the cable, and is movable in an air when the cable is wound by the winding device, and a detecting device hung by the lifting and lowering device. The detecting device is configured to be moved by the winding device in a region defined by the support posts, and lowered by the lifting and lowering device to detect information concerning an object.

A work machine includes a ground propulsion apparatus, a undercarriage frame supported by the ground propulsion apparatus, a machine body supported by the undercarriage frame, a work implement attached to at least one of the undercarriage frame and the machine body, and a tilt mechanism. The machine body includes a chassis coupled to the undercarriage frame and a cab supported on the chassis. The tilt mechanism is arranged to tilt the cab relative to the chassis between an upright position and a recumbent position. The tilt mechanism includes an actuator arranged to move the cab relative to the chassis, and a lock arranged to selectively lock the cab in the upright position relative to the chassis.

The invention relates to a forest machine, comprising a chassis having sides, a swing bogie mounted on bearings to the chassis, comprising a swing frame, second sides and at least two wheels, a swing bearing attaching the chassis to mount the swing bogie, a power transmission arranged through the swing bearing in connection with the chassis, a support formed by two pairs between the chassis and the swing frame, each pair having a protrusion as a support surface and a rail as a counter surface to transmit lateral forces between the chassis and the swing frame during contact between the two surfaces, wherein each pair is located at a distance from the swing bearing on separate side of the swing bearing, and in each pair, one of the protrusions and the rail is attached to the side of the chassis and other to the second side of the swing frame.