A hitch attachment for dragging logs from a vehicle. The hitch attachment includes a base having a distal end and a proximal end. The proximal end of the base is configured to fit within a tow receiver of the vehicle. A vertical frame extends from the base in between the proximal end and the distal end. A log cradle is coupled to the distal end of the base. The log cradle includes a plurality of vertically extending teeth.

A traction assist system and method for heavy equipment on an incline or in other situations with poor or limited traction. In particular, a traction assist system for heavy equipment having an accessory such as a blade, the system including: a tether; an adaptation to the accessory allowing the tether to be placed to allow the accessory to function without disrupting the tether, such as through-holes in the blade; and an attachment point on the heavy equipment for attaching the tether to the heavy equipment. The adaptation will depend on the particular accessory involved but may generally be an adaptation allowing the tether to pass through the accessory.

A grapple for handling logs includes a base portion connectable to a working machine portion and at least one tine connected to the base portion. The at least one tine has a protruding length from the base portion. The grapple further includes a catch arm pivotably arranged relative to the base portion. The grapple can assume configurations with different protruding lengths of the at least one tine.

A forest machine has a carriage driven by a thermal engine and a towing/holding winch carried by the carriage and having a towing drum of the cable and a rotation electric motor of the towing drum commanded and controlled by an electric drive and control circuit having an accumulator pack, a detection block for detecting the electric energy absorbed by the electric motor during one or more towing steps of the load hooked to the cable and the electric energy returned in one or more holding steps of the same load, a comparator block for calculating the difference between the absorbed electric energy and the returned electric energy and an electric energy generator driven directly or indirectly by the thermal engine for sending the calculated electric energy difference to the accumulator pack; the electric drive and control circuit further having a control assembly of the tension of the cable.

A pressure compensated load sense hydraulic system and method is disclosed where a first pressure compensated valve controls flow between a pump and a first function based on a highest function load; and a second pressure compensated valve controls flow between the pump and a second function based on the highest function load. First and second operator controls activate the first and second functions, respectively. When the first function is stalled and the second function is activated, the controller closes the first valve to remove the first function load from the load sense circuit and prevent flow to or from the first function. The controller can determine the first function is stalled when a timer exceeds an initialization period. When the controller closes the first valve, it can cycle the first valve between a shutoff period where the valve is closed, and a refresh period where the valve is opened.

A method of and arrangement for monitoring the collection of plant material includes the following steps and apparatus for executing these steps, respectively: collecting plant location and attribute data with respect to plant material, before and/or during and/or after harvesting the plant material, providing the plant location and attribute data on a collecting vehicle adapted to collect the harvested plant material, moving the collecting vehicle to the harvested plant material based on the plant location data, collecting the harvested plant material, sensing attribute data of the harvested plant material before and/or during and/or after the collecting, and comparing the sensed attribute data with the plant attribute data and generating an output dependent on the result of the comparison.

The disclosure relates to a harvester (10) for harvesting logs. The harvester comprises a traction arrangement (11) configured to drive the harvester, an articulated boom (13) configured to connect to a processing head, a fuel reservoir, an electrical energy generator fuelled by a fuel from the fuel reservoir and configured for supplying power to the traction arrangement and the articulated boom, and an electrical connector (17) configured for coupling the electrical energy generator to an electrical energy storage of a shuttle. The harvester is configured to load a harvested log onto a coupled shuttle and charge the electrical energy storage of said coupled shuttle using electrical energy from the electrical energy generator.

The method for controlling a forwarder comprises storing in a control unit of the forwarder one or more predetermined paths of a head of an articulated boom of the forwarder or a grapple suspended from the head; enabling an automatic transfer of the head or the grapple along one of the paths. The enabling is carried out manually by an operator with the help of a control device; setting off the automatic transfer with the help of a predetermined motion or sequence of motions carried out manually. The method further comprises automatically transferring the head or the grapple under control of the control unit, from a current position of the head or the grapple representing a starting position of the path, along the path, and to an end of the path; stopping the head or the grapple at the end of the path; and automatically disabling the automatic transfer of the head or the grapple after reaching the stopping position.

A multi-purpose portable log skidder that is a self propelled log skidder that does not require a vehicle to tow it.

The disclosure relates to a forestry system (1). The forestry system comprises a harvester (10) comprising an electrical energy generator, and a plurality of self-driving shuttles (20a-f) for transporting logs harvested by the harvester. Each shuttle comprises an electrical energy storage and at least one electrical motor powered by the electrical energy storage. The electrical energy storage of said shuttle is configured to be coupled to the electrical energy generator and charged thereby. The harvester is configured to load a harvested log onto a coupled shuttle and charge the electrical energy storage of said coupled shuttle using electrical energy from the electrical energy generator.