Device for harvesting timber
OwnerWerner Steiningerinventor
Life of this patent
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Abstract
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.
Claims8
A device for timber harvesting, having a controllable extension arm and a sawing and gripper unit which is attached to the extension arm and comprises a sawing unit as well as a gripper unit, wherein the gripper unit has at least one gripper pair of two gripper arms for a tree trunk which can be pivoted about gripper pivot axes relative to one another, and the sawing unit has a pivot drive, which is arranged in a saw box, for a cutting element, which is arranged such that it can be pivoted out of the saw box, for severing the tree trunk, which cutting element is designed as a chain saw, wherein the saw box is pivotably arranged on the gripper unit about a pivot axis and is connected to the gripper unit via a spring element and a piston-cylinder unit, wherein the spring element defines a predetermined cutting position of the saw box via a restoring torque about the pivot axis in its equilibrium position, with an associated cutting plane of the cutting element, and the saw box is pivotable by the piston-cylinder unit, by overcoming the restoring torque of the spring element, into an inclined position which is tilted relative to the cutting position and with which an inclined plane of the cutting element tilted relative to the cutting plane is associated, wherein the bearing of the piston-cylinder unit on the saw box or on the gripper unit has a free movement space in the cutting position of the saw box.
Dependencies are inferred from the claim text.