The invention relates to a timber handling vehicle (1) and a timber grip, wherein said timber handling vehicle includes a load compartment (2), a crane (3) a timber grip (4), a hydraulic cylinder (4c), a hydraulic system (11, 12), a pump (15), a tank (16), a control valve (18) with which a fluid flow set under a pump feed pressure (P) is directed to a plus side (15:1) via a first pipe (15A) respectively a minus side (15:2) via a second pipe (15B). For efficient timber handling, the hydraulic system (11, 12) includes a third pipe (15C), which results in a regenerative fluid flow from the minus side (15:2) to the plus side (15:1) of the hydraulic cylinder (4c), a valve means (21) in the second pipe (15B), which valve means (21) is configured to; drive in a first operating condition, where the valve means (21) is closed and fluid flow from the minus side (15:2) to the plus side (15:1) of the hydraulic cylinder is directed via said third pipe (15C), receive a pressure indication that indicates a pump feed pressure (P) on the plus side (15:1) of the hydraulic cylinder (4c), determine whether the pump feed pressure (P) exceeds a first operating condition threshold value (Z1) and, if so, drive in a second operating condition, where the valve means (21) is open, and fluid flow from the minus side (15:2) of the hydraulic cylinder (4c) is directed to the tank (16).

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.

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 transport platform for loading, conveying, and storing elongated loads which are cut to length, in particular round wood, includes a support structure with a base assembly which is made of longitudinal and transverse supports. A base-side corner fitting is provided on each of the four corner regions of the base assembly, and the transport platform can be locked on a semi-trailer contour, for example of a semitrailer of a truck or another transportation device, by the corner fitting. The base assembly additionally has a vertical support on each of the four corner regions. The vertical support terminates with an upper corner fitting, to which an additional transport platform stacked thereon can be locked or into which a container stacker for loading the transport platform engages.

A forestry machine includes a ground propulsion apparatus, a chassis supported by the ground propulsion apparatus, a cab, an engine and a work implement. The chassis includes a front chassis portion and a rear chassis portion. The front chassis portion includes an upper portion and a lower portion. The rear chassis portion has a wood basket supported thereon. The cab is rotatably supported on the front chassis portion by a rotatable connection about a cab rotation axis to be selectively rotated 360 degrees. The engine is integrated into the front chassis portion. At least a part of the engine is disposed below an upper most surface of the upper portion. The work implement is movably attached to the cab. The work implement includes a boom movably attached to the cab, an arm movably attached to the boom, and a work tool attached to the arm.

A forestry machine includes a ground propulsion apparatus, a chassis supported by the ground propulsion apparatus, a cab, an engine and a work implement. The chassis includes a front chassis portion and a rear chassis portion. The front chassis portion includes an upper portion and a lower portion. The rear chassis portion has a wood basket supported thereon. The cab is rotatably supported on the front chassis portion by a rotatable connection about a cab rotation axis to be selectively rotated 360 degrees. The engine is integrated into the front chassis portion. At least a part of the engine is disposed below an upper most surface of the upper portion. The work implement is movably attached to the cab. The work implement includes a boom movably attached to the cab, an arm movably attached to the boom, and a work tool attached to the arm.

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 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 collapsible trailer that includes a longitudinal beam, a first transverse beam, a second transverse, and a third transverse beam. A first vertical arm is pivotally connected to a first end of the first transverse beam and a second vertical arm is pivotally connected to a second end of the first transverse beam. A third vertical arm is pivotally connected to a first end of the second transverse beam and a fourth vertical arm is pivotally connected to a second end of the second transverse beam. A fifth vertical arm is pivotally connected to a first end of the third transverse beam and a sixth vertical arm is pivotally connected to a second end of the third transverse beam. A first wheel is connected to the fifth vertical arm and a second wheel connected to the sixth vertical arm.

A support arm for a loading bunk of a transport vehicle, having a horizontal and a vertical section, each section comprising an inner and outer segment, which are telescopically connected to each other so that the length of the vertical and horizontal sections is variable. Each section further comprising an inner hydraulic actuator with at least one hydraulic pressure chamber, connected to the segments of the horizontal and vertical sections so that movement of the hydraulic actuators changes the lengths of the vertical and horizontal sections respectively. The vertical section being fixedly connected to the horizontal section on one end of the inner or outer segment.