Manual backup system for controlling fluid flow to cylinders within an agricultural implement

An agricultural implement system, comprising:

• a row unit movably coupled to a tool bar of an agricultural implement;
• an opener disk rotatably coupled to a chassis of the row unit and configured to engage soil;
• a gauge wheel assembly movably coupled to the chassis and comprising a gauge wheel configured to rotate across a soil surface to limit a penetration depth of the opener disk into the soil;
• a depth control cylinder extending between the chassis and the gauge wheel assembly, wherein the depth control cylinder is configured to adjust the penetration depth of the opener disk by varying a position of the gauge wheel relative to the chassis;
• a depth adjustment system configured to automatically maintain the penetration depth of the opener disk by varying a pressure within the depth control cylinder;
• and
• a manual backup system comprising a pressure regulator and a selection control valve, wherein the selection control valve is in fluid communication with the pressure regulator and the depth control cylinder, the selection control valve is configured to transition to a first position that facilitates fluid flow between the pressure regulator and the depth control cylinder in the event of art electrical failure, the selection control valve is configured to transition to a second position that blocks fluid flow between the pressure regulator and the depth control cylinder if electrical power is supplied to the manual backup system, and the pressure regulator is configured to manually vary the pressure within the depth control cylinder while the selection control valve is in the first position.

An agricultural implement system, comprising:

• a row unit movably coupled to a tool bar of an agricultural implement;
• an opener disk rotatably coupled to a chassis of the row unit and configured to engage soil;
• a gauge wheel assembly movably coupled to the chassis and comprising a gauge wheel configured to rotate across a soil surface to limit a penetration depth of the opener disk into the soil;
• a depth control cylinder extending between the chassis and the gauge wheel assembly, wherein the depth control cylinder is configured to adjust the penetration depth of the opener disk by varying a position of the gauge wheel relative to the chassis;
• a down force cylinder configured to apply a downward force to the row unit, a press wheel cylinder configured to vary contact force between a press wheel and the soil surface, a closing disk cylinder configured to vary contact force between a closing disk and the soil surface, a residue manager cylinder configured to vary contact force between a residue manager and the soil surface, or a combination thereof;
• an electronic control unit configured to automatically regulate a pressure within the depth control cylinder and within at least one of the down force cylinder, the press wheel cylinder, the closing disk cylinder, and the residue manager cylinder, wherein the electronic control unit is configured to automatically maintain the penetration depth of the opener disk by varying the pressure within the depth control cylinder;
• and
• a manual backup system in fluid communication with the depth control cylinder and with at least one of the down force cylinder, the press wheel cylinder, the closing disk cylinder, and the residue manager cylinder, wherein the manual backup system is configured to automatically engage in the event of an electrical failure, and to facilitate manual pressure adjustment of the depth control cylinder and at least one of the down force cylinder, the press wheel cylinder, the closing disk cylinder, and the residue manager cylinder.