A system for timber management on a land base includes a first timber management machine; a computing device for use in the first timber management machine, a touch screen display operatively connected to the computing device for use by an operator of the first timber management machine, a geoposition determining device operatively connected to the computing device for determining position of the first timber management machine, a software application executing on the computing device, wherein the software application provides for displaying a map and a plurality of data layers on the map, wherein the map is configured to show timber bundles laid down, a current location of the first timber management machine as determined by the geoposition determining device, and a current location of a second timber management machine.

A system for timber management on a land base includes a first timber management machine; a computing device for use in the first timber management machine, a touch screen display operatively connected to the computing device for use by an operator of the first timber management machine, a geoposition determining device operatively connected to the computing device for determining position of the first timber management machine, a software application executing on the computing device, wherein the software application provides for displaying a map and a plurality of data layers on the map, wherein the map is configured to show timber bundles laid down, a current location of the first timber management machine as determined by the geoposition determining device, and a current location of a second timber management machine.

The present disclosure concerns a tree felling head for mounting to a tree-cutting carrier, the tree felling head comprising a bottom saw housing defining a saw-receiving cavity and comprising a peripheral border at least partially bordering the saw-receiving cavity; and an excavating assembly comprising a scraping portion extending outwardly past the peripheral border at least along a section thereof. It also concerns such an excavating assembly.

The present disclosure concerns a tree felling head for mounting to a tree-cutting carrier, the tree felling head comprising a bottom saw housing defining a saw-receiving cavity and comprising a peripheral border at least partially bordering the saw-receiving cavity; and an excavating assembly comprising a scraping portion extending outwardly past the peripheral border at least along a section thereof. It also concerns such an excavating assembly.

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.

A tree processing system may include a tree processing head and a controller. The tree processing head may include a header frame, a motor, a saw, an arm, and a sensor. The saw is used to cut a tree when the saw is driven by the motor. The saw engages with the tree from a first position and to a second position. The first position and the second position define a cutting zone therebetween. The sensor is used to detect a saw operation speed or current. The controller is coupled to the sensor and configured to determine whether the second position is reached based upon an increase of the saw operation speed or current detected by the sensor. When the second position is reached, the controller transmits a resting signal to the tree processing head to perform a resting operation.

A tree processing system may include a tree processing head and a controller. The tree processing head may include a header frame, a motor, a saw, an arm, and a sensor. The saw is used to cut a tree when the saw is driven by the motor. The saw engages with the tree from a first position and to a second position. The first position and the second position define a cutting zone therebetween. The sensor is used to detect a saw operation speed or current. The controller is coupled to the sensor and configured to determine whether the second position is reached based upon an increase of the saw operation speed or current detected by the sensor. When the second position is reached, the controller transmits a resting signal to the tree processing head to perform a resting operation.

A modular structure for an energy wood grapple has at least two opposite jaws (31, 32) that are configured to press vertical trees against a blade, thereby cutting the tree. The remaining portion is held by the jaws (31, 32) against a body (10) of the energy wood grapple. The modular structure comprises two frame plates at opposite sides of the body (10), attached detachably, for example by bolts (23). The jaws (31, 32) are attached between the opposite frame plates detachably, to axles that provide a pivot for the jaws (31, 32).

A modular structure for an energy wood grapple has at least two opposite jaws (31, 32) that are configured to press vertical trees against a blade, thereby cutting the tree. The remaining portion is held by the jaws (31, 32) against a body (10) of the energy wood grapple. The modular structure comprises two frame plates at opposite sides of the body (10), attached detachably, for example by bolts (23). The jaws (31, 32) are attached between the opposite frame plates detachably, to axles that provide a pivot for the jaws (31, 32).

A method for a tree processing head to harvest a tree includes initiating a cutting operation on a tree, the cutting operation including powering a cutting chain of a saw bar driven by a motor; securing the tree; moving the saw bar via an actuator, the saw bar configured to be moved from a home position to a first position and to a second position, and the first position and the second position defining a cutting zone; detecting a hydraulic pressure of at least one of the motor and the actuator by a sensor; determining whether the second position is reached based upon a decrease of the hydraulic pressure by a controller; and transmitting a resting signal to the tree processing head to perform a resting operation when the controller determines that the second position is reached.