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US 7,578,356 B2Granted
Disc frame vibration dampening system
AssigneeCNH America LLC
InventorMichael R. Newman
Life of this patent
Estimating the term…
Abstract
A disc harrow composed of one or more disc gangs has a subframe coupled to the disc gangs to move the disc gangs in response to variations in farmland terrain to limit the impact of ground variation when encountered during the harrowing process. When the obstruction is cleared, the subframe automatically returns the disc gangs to their pre-obstruction position. In addition to reducing the potentially-damaging impact of obstructions, the subframe also maintains a more consistent reel depth during undulations or changes in the farmland terrain, such as during harrowing of slopes or unleveled fields such as valleys, near waterways, and along fence rows.
Claims14
A disc harrow for tilling ground comprising:
- a mainframe having a pair of rails;
- a plurality of transverse supports connected to said pair of rails along the length of said rails;
- a disc frame including a gang assembly;
- said disc frame having a plurality of discs mounted to a disc support beam;
- said mainframe having a subframe;
- wherein said subframe having a rockshaft;
- said rockshaft having a strut rigidly attached to said rockshaft;
- said disc support beam having a support arm;
- said strut attached to said support arm;
- wherein said disc support beam is raised and lowered by rotating the rockshaft;
- said strut includes a carrier bracket interconnected between said rockshaft and said disc frame;
- said carrier bracket having an elongated slot;
- a mounting lug inner connected between said strut and said disc frame;
- said carrier bracket having a carrier bracket arm;
- a shock absorber coupled to said carrier bracket arm extending downwardly thereon and engaged with said mounting lug;
- a spring wherein said shock absorber extends concentrically through said spring;
- said mounting lug includes a guide pin;
- said guide pin moves vertically within said slot;
- wherein said disc gang floats in response to an encountered ground variation along only a single axis;
- wherein said guide pin moves vertically within the slot allowing said disc gang not to oscillate fore and aft when ground variations are encountered.
17 more elements
A farm implement for tilling a farmland, comprising:
- a mainframe defined by a pair of rails;
- a harrow having a plurality of transverse supports connected to said pair of rails;
- a disc frame including a gang assembly;
- said disc frame having a plurality of discs mounted to a disc support beam;
- said mainframe having a subframe;
- wherein said subframe having a rockshaft;
- said rockshaft having a strut rigidly attached to said rockshaft;
- said disc support beam having a support arm;
- said strut attached to said support arm;
- wherein said disc support beam is raised and lowered by rotating the rockshaft;
- said strut includes a carrier bracket interconnected between said rockshaft and said disc frame;
- said carrier bracket having an elongated slot;
- a mounting lug inner connected between said strut and said disc frame;
- said carrier bracket having a carrier bracket arm;
- a shock absorber coupled to said carrier bracket arm extending downwardly thereon and engaged with said mounting lug;
- a spring wherein said shock absorber extends concentrically through said spring;
- said mounting lug includes a guide pin;
- said guide pin moves vertically within said slot;
- wherein said disc gang floats in response to an encountered ground variation along only a single axis;
- wherein said guide pin moves vertically within the slot allowing said disc gang not to oscillate fore and aft when ground variations are encountered;
- and
- wherein said strut interconnected to the mainframe and the harrow, the strut adapted to allow limited movement of the disc frame along only a single axis relative to the mainframe when the harrow encounters ground variation.
19 more elements
An apparatus for tilling crop residue and soil, comprising:
- a floating frame;
- a disc harrow including a first disc gang and a second disc gang connected to the first disc gang by the floating frame;
- a mainframe defined by a pair of rails and a plurality of transverse supports, the mainframe carrying the disc harrow and coupled to the floating frame by at least one strut;
- said strut includes a carrier bracket interconnected to a rockshaft and said floating frame;
- said carrier bracket having an elongated slot;
- a mounting lug inner connected between said strut and said disc frame;
- said carrier bracket having a carrier bracket arm;
- a shock absorber coupled to said carrier bracket arm extending downwardly thereon and engaged with said mounting lug;
- a spring wherein said shock absorber extends concentrically through said spring;
- said mounting lug includes a guide pin;
- said guide pin moves vertically within said slot;
- wherein said disc gang floats in response to an encountered ground variation along only a single axis;
- wherein said guide pin moves vertically within the slot allowing said disc gang not to oscillate fore and aft when ground variations are encountered;
- and
- wherein said at least one strut interconnected to the mainframe and the harrow, the at least one strut adapted to allow limited movement of the disc frame along only a single axis relative to the mainframe when the harrow encounters ground variation;
- and
- wherein the at least one strut is adapted to maintain the disc harrow at a defined depth during normal working operation and damper any force presented thereto when the disc harrow encounters ground variation during harrowing of a field.
14 more elements
Dependencies are inferred from the claim text.