A tree harvesting machine, a tree harvesting monitoring system, a tree harvesting head, a method for controlling operation of a tree harvesting head and a method for monitoring operation of a tree harvesting machine
AssigneeLog Max AB
InventorMikael ELIASSON
Life of this patent
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Abstract
The present disclosure relates to a tree harvesting machine (120) having a crane arm (118), wherein the crane arm (118) comprises a tree harvesting head (100; 200) arranged at a free end of the crane arm (118). The tree harvesting head (100) comprises a saw (104) and at least two feed wheels (102). The tree harvesting head (100) further comprises an electric motor (106a) arranged to drive the saw (104), and at least one electric motor (106b) arranged to drive the feed wheels (102). The present disclosure also relates to associated tree harvesting monitoring systems, tree harvesting heads, methods and computer programs.
Claims23
A tree harvesting machine having a crane arm, wherein the crane arm comprises a tree harvesting head arranged at a free end of the crane arm, wherein the tree harvesting head comprises a saw and at least two feed wheels and in that the tree harvesting head further comprises an electric motor arranged to drive the saw, and at least one electric motor arranged to drive the feed wheels.
A tree harvesting head for a tree harvesting machine having a crane arm, wherein the tree harvesting head comprises a saw and at least two feed wheels, wherein, the tree harvesting head further comprises an electric motor arranged to drive the saw, and at least one electric motor arranged to drive the feed wheels.
A method for controlling operation of a tree harvesting head comprising a saw controlled by a first electric motor and at least two feed wheels controlled by at least one second electric motor, the method comprising:
- determining a current state relating to at least one of the first and the at least one second electric motor;
- and
- controlling the at least one of the first and the at least one second electric motor and/or actuating means of the tree harvesting head based on the current state.
A method for monitoring operation of a tree harvesting machine, wherein the tree harvesting machine comprises a tree harvesting head comprising a saw controlled by a first electric motor and at least two feed wheels controlled by at least one second electric motor, the method comprising:
- obtaining data relating to a current state of at least one of the electric motors;
- and
- performing diagnosis and/or troubleshooting based on the obtained data.
Dependencies are inferred from the claim text.