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A land clearing tractor and process are provided for selectively clearing a land of brush and trees. The tractor has a traction unit for moving the tractor along a direction of travel. A supporting frame is connected to the traction unit. The frame has first and second sides, and a raised section be

A land clearing tractor and process are provided for selectively clearing a land of brush and trees. The tractor has a traction unit for moving the tractor along a direction of travel. A supporting frame is connected to the traction unit. The frame has first and second sides, and a raised section between the first and second sides. A first shredder head is operatively connected to the first side of the frame and oriented parallel to the direction of travel. The first shredder head is movable between elevated and lowered positions for clearing brush and trees in a first band. A second shredder head is operatively connected to the second side of the frame. The second shredder head is parallel to the first shredder head and is spaced apart therefrom. The second shredder head is movable between elevated and lowered positions for clearing brush and trees in a second band spaced apart from the first band. Thereby, the tractor leaves between the first and second bands a residual band of brush and trees.

대표청구항 ▼

A land clearing tractor and process are provided for selectively clearing a land of brush and trees. The tractor has a traction unit for moving the tractor along a direction of travel. A supporting frame is connected to the traction unit. The frame has first and second sides, and a raised section be

A land clearing tractor and process are provided for selectively clearing a land of brush and trees. The tractor has a traction unit for moving the tractor along a direction of travel. A supporting frame is connected to the traction unit. The frame has first and second sides, and a raised section between the first and second sides. A first shredder head is operatively connected to the first side of the frame and oriented parallel to the direction of travel. The first shredder head is movable between elevated and lowered positions for clearing brush and trees in a first band. A second shredder head is operatively connected to the second side of the frame. The second shredder head is parallel to the first shredder head and is spaced apart therefrom. The second shredder head is movable between elevated and lowered positions for clearing brush and trees in a second band spaced apart from the first band. Thereby, the tractor leaves between the first and second bands a residual band of brush and trees. d of brush and trees, the tractor comprising: a traction unit for moving the tractor along a direction of travel; a frame having an inverted U-shaped cross-section with first and second sides, and a raised section between the first and second sides positioned between 0.5 and 1.5 meters from ground; a first shredder head operatively connected to the first side of the frame through a first actuating lever arm, the first shredder head being oriented parallel to the direction of travel and being movable between elevated and lowered positions for clearing brush and trees in a first band; and a second shredder head operatively connected to the second side of the frame through a second actuating lever arm, the second shredder head being parallel to the first shredder head and spaced apart therefrom, the second shredder head being movable between elevated and lowered positions for clearing brush and trees in a second band spaced apart from the first band and thereby leaving between the first and second bands a residual band of brush and trees. 12. A process for selectively clearing brush and trees of a land, comprising the steps of: clearing simultaneously first and second parallel and spaced apart bands of brush and trees with a land clearing tractor; and manually and selectively cutting brush and trees in a residual band between the two parallel and spaced apart bands. 13. The process according to claim 12, wherein the land clearing tractor is as defined in claim 1 and the step of clearing simultaneously comprises the steps of: moving the tractor along the direction of travel; and moving the first and second shredder heads between elevated and lowered positions for clearing brush and trees in the first and second spaced apart bands and leaving therebetween the residual band. 14. The process according to claim 12, wherein the land clearing tractor is as defined in claim 11 and the step of clearing simultaneously comprises the steps of: moving the tractor along the direction of travel; and moving the first and second shredder heads between elevated and lowered positions for clearing brush and trees in the first and second spaced apart bands and leaving therebetween the residual band. 15. A mobile silvicultural apparatus for use in a land containing trees, the apparatus comprising: a steerable wheeled support frame comprising a horizontally extending ground-clearing section, and first and second opposite vertical side sections, the ground-clearing and side sections defining a tunnel-shaped passage through which trees of a certain type are allowed to pass as the support frame travels thereover; manipulating means mounted to the support frame for selectively manipulating trees of the land; motor means for imparting motion to the support frame; and control means for controlling the steerable support frame, the motor means, and the manipulating means.