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US 11,723,297 B2Granted
Soil cultivation device
AssigneeThomas Hatzenbichler Agro-Technik GmbH
InventorsJuergen Leopold, Daniel Koglek, Thomas Hatzenbichler
Life of this patent
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Abstract
In the case of a soil cultivation device with multiple harrow tines, the harrow tines are fastened to levers, which are mounted to pivot on tie bars of the supporting frame via carriers. The operating position of the harrow tines is defined by the levers being adjacent to tie bars, and the harrow tines are prestressed into the operating position by springs assigned to them in the form of pneumatic cylinders.
Claims20
A soil cultivation device (1), comprising:
- a supporting frame (2) that includes a tie bar (3);
- and
- multiple harrow tines (10) arranged to pivot on the supporting frame (2),
- wherein one spring each is assigned to the harrow tines (10),
- wherein an operating position of the harrow tines (10) is determined by a stop arranged on the supporting frame (2),
- wherein the harrow tines (10) are prestressed into their operating position by the springs,
- wherein the springs are pneumatic springs, charged by compressed air via pressure-regulating valves and configured to maintain, for each tine, a tine pressure applied at a free end of the tine having an equal value in all pivot positions of the tine.
4 more elements
A soil cultivation device (1), comprising:
- a supporting frame (2) that includes a tie bar (3);
- and
- multiple harrow tines (10) arranged to pivot on the supporting frame (2),
- wherein one spring each is assigned to the harrow tines (10),
- wherein the operating position of the harrow tines (10) is determined by a stop arranged on the supporting frame (2),
- wherein the harrow tines (10) are prestressed into their operating position by the springs,
- wherein the springs are pneumatic cylinders (17), charged by compressed air via pressure-regulating valves,
- wherein the harrow tines (10) are fastened to levers (12),
- wherein the levers (12) are mounted to pivot on the supporting frame (2),
- wherein the levers (12) are mounted to pivot on tie bars (3) of the supporting frame (2) via carriers (13),
- wherein the pneumatic cylinders (17) are supported on the carriers (13) and are adjacent to the levers (12) at a distance from the bearings (15) of the levers (12) on the carriers (13), and
- wherein the pneumatic cylinders (17) are configured to maintain a tine pressure, applied at a free end of each tine, at an equal value in all pivot positions of the tine.
9 more elements
Dependencies are inferred from the claim text.