A land preparation tool includes a tool body having a longitudinal axis, wherein the tool body includes a cutting surface and a mounting surface disposed on the tool body opposite the cutting surface, wherein the mounting surface includes an apex that extends along about half of the mounting surface parallel to the longitudinal axis and first and second side mounting surfaces that extend from the apex; a blade disposed on the same side of the tool body as the cutting surface; and a channel disposed into the mounting surface and extending into the tool body.

A cutting tool for clearing plant growth. The clearing tool includes a power transmission apparatus. An elongated part is coupled to the transmission to rotate around a longitudinal axis of the elongated part and having at least one thread that rises toward the transmission and the diameter of which decreases from an end of the elongated part coupled to the transmission to the end of the elongated part that is at a distance from the transmission. Guide parts are arranged around the elongated part to extend in the direction of the longitudinal axis of the elongated part. A blade part is arranged at the end of the elongated part coupled to the transmission. The elongated part, which, while targeted in a longitudinal direction toward the plant growth, is arranged to cut the plant growth when being rotated, wherein the threads transport the plant growth toward the blade part guided by the guide parts and cut the plant growth with the blade part.

A splitter is provided for mounting on the leading face of a cutting assembly to be mounted on a brush cutter. In one embodiment, the splitter is preferably mounted below the cutting portion of the tooth such that as wood is cut, the cut wood is directed onto the splitter for further cutting. The tooth is mounted to cut tangentially with respect to the rotation of the cutter, while the splitter cuts radially and outwardly with respect to the rotation of the cutter. In this manner, a cutting mechanism is provided that is capable of cutting tangentially and radially simultaneously. The flow of cut wood is directed out of from the cutting assembly, thus facilitating the removal of the cutting debris away from the tooth holder and the cutting tooth, thereby cleaning the tooth of any debris and preventing wood and other debris from getting lodged within the cutting assembly.

A tree harvester, suitable for harvesting small trees in row(s) as a source of biomass, has a harvesting head with a chipper drum and complementary anvil. A pick-up front has at least one spiral and guide member, such as a guide rail or counter-rotating spiral, to maintain a tree in a substantially vertical position when, and after, its stem is cut by a base cutter. The pick-up front has a support plate or conveyor, which co-operates with the at least one spiral or guide member pair, to convey the tree to a location about the chipper drum, for engagement by at least one pair of nip rollers above the chipper drum, while maintaining the tree in the substantially vertical position. The, or each, pair of nip rollers feeds the tree downwardly (and rearwardly) to the chipper drum, while still maintaining the tree in the substantially vertical position, for conversion to biomass, such as woodchips. The harvester may have two-or-more of the harvester heads arranged side-by-side to enable trees in adjacent rows to be harvested.

A tree harvester, suitable for harvesting small trees in row(s) as a source of biomass, has a harvesting head with a chipper drum and complementary anvil. A pick-up front has at least one spiral and guide member, such as a guide rail or counter-rotating spiral, to maintain a tree in a substantially vertical position when, and after, its stem is cut by a base cutter. The pick-up front has a support plate or conveyor, which co-operates with the at least one spiral or guide member pair, to convey the tree to a location about the chipper drum, for engagement by at least one pair of nip rollers above the chipper drum, while maintaining the tree in the substantially vertical position. The, or each, pair of nip rollers feeds the tree downwardly (and rearwardly) to the chipper drum, while still maintaining the tree in the substantially vertical position, for conversion to biomass, such as woodchips. The harvester may have two-or-more of the harvester heads arranged side-by-side to enable trees in adjacent rows to be harvested.

Timber harvesting device, having an extension arm and a sawing unit and gripper unit attached to the extension arm. The gripper unit has a gripper pair for a tree trunk, and the sawing unit has a cutting element, e.g., a chain saw, which is arranged to be pivotable out of a saw box for severing the tree trunk. The saw box is pivotably arranged about a pivot axis on the gripper unit and is connected to the gripper unit via a spring element and a piston-cylinder unit. The spring element defines a predetermined cutting position of the saw box via a restoring torque about the pivot axis, and the saw box is pivotable by the piston-cylinder unit into an inclined position which is tilted relative to the cutting position. The bearing of the piston-cylinder unit has a free movement space in the cutting position of the saw box.

Timber harvesting device, having an extension arm and a sawing unit and gripper unit attached to the extension arm. The gripper unit has a gripper pair for a tree trunk, and the sawing unit has a cutting element, e.g., a chain saw, which is arranged to be pivotable out of a saw box for severing the tree trunk. The saw box is pivotably arranged about a pivot axis on the gripper unit and is connected to the gripper unit via a spring element and a piston-cylinder unit. The spring element defines a predetermined cutting position of the saw box via a restoring torque about the pivot axis, and the saw box is pivotable by the piston-cylinder unit into an inclined position which is tilted relative to the cutting position. The bearing of the piston-cylinder unit has a free movement space in the cutting position of the saw box.

A power control system for a forestry machine may include an engine control module and a pump control module. The engine control module may be configured to control an engine speed of an engine of the forestry machine. The engine speed may be limited in accordance with a maximum engine speed. The pump control module may determine whether a first function of the forestry machine is activated, determine whether a sensed pressure of a pump associated with the first function is greater than or equal to a high pressure setpoint, and output a control signal indicating a request for a power increase in response to determining that the first function is activated and the sensed pressure is greater than or equal to the high pressure setpoint. The engine control module may increase the maximum engine speed in response to the request for the power increase from the pump control module.

A power control system for a forestry machine may include an engine control module and a pump control module. The engine control module may be configured to control an engine speed of an engine of the forestry machine. The engine speed may be limited in accordance with a maximum engine speed. The pump control module may determine whether a first function of the forestry machine is activated, determine whether a sensed pressure of a pump associated with the first function is greater than or equal to a high pressure setpoint, and output a control signal indicating a request for a power increase in response to determining that the first function is activated and the sensed pressure is greater than or equal to the high pressure setpoint. The engine control module may increase the maximum engine speed in response to the request for the power increase from the pump control module.

A land preparation tool includes a cutting surface having a blade and a mounting interface opposite the cutting surface. The mounting interface of the land preparation tool is configured to detachably connect to a tool holder having a top surface, an end surface, a mounting surface opposite the end surface, and opposing first and second side surfaces extending between the end surface and the mounting surface. The mounting surface has an apex extending downwardly from the top surface and first and second mounting faces. The first mounting face extends inwardly from the first side surface toward the apex and the second mounting face extends inwardly from the second side surface toward the apex.