초록 ▼

Individual tool bars are mounted between upright guides of a horizontal rectangular frame. Rollers engaging the guides transmit longitudinal forces from the frame to the tool bars and allow the tool bars to move freely up and down. Ground working tools mounted to the bars can therefore “walk”over un

Individual tool bars are mounted between upright guides of a horizontal rectangular frame. Rollers engaging the guides transmit longitudinal forces from the frame to the tool bars and allow the tool bars to move freely up and down. Ground working tools mounted to the bars can therefore “walk”over uneven terrain as controlled by balancing depth wheels and packer wheels. Hydraulic cylinders are mounted between the tool bars and frame for applying upward or downward force against the tool bars without inhibiting their free movement along the guides in response to ground contour.

대표청구항 ▼

An agricultural tool carrier comprising: a ground-supported frame; front and rear upright guides fixed on said frame in longitudinally spaced positions along its intended direction of travel, said guides presenting upright surfaces; a longitudinally elongated single row tool bar mounted between the

An agricultural tool carrier comprising: a ground-supported frame; front and rear upright guides fixed on said frame in longitudinally spaced positions along its intended direction of travel, said guides presenting upright surfaces; a longitudinally elongated single row tool bar mounted between the front and rear guides, said tool bar being aligned along the intended directions of travel of said frame; first means operably connected between said tool bar and one of said guides for transmitting longitudinal forces from the frame to said tool bar by engagement of said upright surfaces during frame travel; second means operably connected between said tool bar and each of said guides for vertically guiding the tool bar for elevational movement relative to the frame alongside each of said front and rear guides by engagement of said upright surfaces; a first ground-engaging wheel mounted to the tool bar at a location adjacent to the front guide; and a second ground-engaging wheel mounted to the tool bar at a location adjacent to the rear guide; power means operably connected between the frame and tool bar at a location between the first and second ground-engaging wheels for applying a selected vertical force against the tool bar.