A working machine according to one aspect of the present disclosure comprises an operating device, a working tool, a driving device, a braking device, a detection device, and a change device. The detection device detects a mode of an operation performed on the operating device. The change device changes a brake control to be performed by the braking device according to the mode detected by the detection device.

A multi-process machine including a base machine, a boom assembly and a felling head for felling and further processing trees is provided with at least one pressure accumulator for increasing the instantaneous output with a motor and the system includes a separate auxiliary supply line led to the pressure accumulator from a pump and control valves for the auxiliary supply line, and an auxiliary control line led from the pressure accumulator directly to a selected side of the hydraulic motor and valves for the auxiliary control line.

A multi-process machine including a base machine, a boom assembly and a felling head for felling and further processing trees is provided with at least one pressure accumulator for increasing the instantaneous output with a motor and the system includes a separate auxiliary supply line led to the pressure accumulator from a pump and control valves for the auxiliary supply line, and an auxiliary control line led from the pressure accumulator directly to a selected side of the hydraulic motor and valves for the auxiliary control line.

A harvester (1), comprising a harvester aggregate (2) for felling, trimming and preparing tree trunks, a first measuring device (I) provided in connection with the harvester aggregate (2) for measuring of at least one dimension of a tree trunk. The harvester comprises a second measuring device (II) for measuring a feature of the first measuring device, whereby said feature is an attribute reflecting the capability of the first measuring device to measure said dimension correctly, and a control unit (11) configured to make a comparison between an actual value (a) of the measured feature and a target value (β) of said feature, whereby the target value is indicative of a state of the first measuring device, where its measurement of said dimension is considered to be correct.

A harvester (1), comprising a harvester aggregate (2) for felling, trimming and preparing tree trunks, a first measuring device (I) provided in connection with the harvester aggregate (2) for measuring of at least one dimension of a tree trunk. The harvester comprises a second measuring device (II) for measuring a feature of the first measuring device, whereby said feature is an attribute reflecting the capability of the first measuring device to measure said dimension correctly, and a control unit (11) configured to make a comparison between an actual value (a) of the measured feature and a target value (β) of said feature, whereby the target value is indicative of a state of the first measuring device, where its measurement of said dimension is considered to be correct.

Embodiments include method, systems, and computer program products for felling a tree. The method includes scanning, using a processor, a tree and an environment within a predetermined radius around the tree. The processor calculates an approximate center of gravity (CoG) for the tree in response to the scanning of the tree. The processor further receives a desired tree fall direction. The processor further provides attachment locations on the tree for attaching one or more tree felling assistance devices. The processor further instructs each of the one or more tree felling assistance devices to apply a first force to the tree in which the first force applied by each of the one or more tree felling assistance devices in conjunction with one or more cuts applied to the tree, fells the tree.

Embodiments include method, systems, and computer program products for felling a tree. The method includes scanning, using a processor, a tree and an environment within a predetermined radius around the tree. The processor calculates an approximate center of gravity (CoG) for the tree in response to the scanning of the tree. The processor further receives a desired tree fall direction. The processor further provides attachment locations on the tree for attaching one or more tree felling assistance devices. The processor further instructs each of the one or more tree felling assistance devices to apply a first force to the tree in which the first force applied by each of the one or more tree felling assistance devices in conjunction with one or more cuts applied to the tree, fells the tree.

A forestry machine includes a ground propulsion apparatus, a vehicle body supported by the ground propulsion apparatus, an operator seat disposed on the vehicle body, a first control lever operable by an operator sitting in the operator seat, a work implement including a saw, and a control circuit. The control circuit includes a first user input disposed on the first control lever. The first user input is operatively coupled to the work implement. Power to the saw is engaged upon the first user input being operated in combination with another operation. A method of operating a forestry machine includes operating a first user input disposed on the first control lever. Power is engaged to the saw in response to the first user input being operated in combination with another operation.

A hoisting apparatus includes a rotation device with connectors for connecting pressure-medium lines to a rotation device, a boom, from which the pressure-medium lines are arranged to lead to the rotation device, and a pivoted joint for suspending the rotation device on the boom. The pivoted joint includes two consecutive pivots in a longitudinal direction of the rotation device. The rotational axes of the pivots are at right-angles to each other. The pressure-medium lines are routed between lugs of the pivot on a boom side of the pivoted joint, past the connectors of the rotation device in the longitudinal direction of the rotation device, to turn towards the connectors to form a hose loop and then routed to the connectors of the rotation device. The pressure-medium lines are arranged on both sides of the rotation device related to a plane defined in the longitudinal direction of the boom and the longitudinal direction of the rotation device.

A hoisting apparatus includes a rotation device with connectors for connecting pressure-medium lines to a rotation device, a boom, from which the pressure-medium lines are arranged to lead to the rotation device, and a pivoted joint for suspending the rotation device on the boom. The pivoted joint includes two consecutive pivots in a longitudinal direction of the rotation device. The rotational axes of the pivots are at right-angles to each other. The pressure-medium lines are routed between lugs of the pivot on a boom side of the pivoted joint, past the connectors of the rotation device in the longitudinal direction of the rotation device, to turn towards the connectors to form a hose loop and then routed to the connectors of the rotation device. The pressure-medium lines are arranged on both sides of the rotation device related to a plane defined in the longitudinal direction of the boom and the longitudinal direction of the rotation device.