Control device for center pivot irrigation units

Fluid handling – With casing – support – protector or static constructional... – Vehicle


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239177, 91 36, 91 39, 91171, B05B 300




A control device is designed for center pivot irrigation units of the type having an elongate water carrying pipe with a plurality of support vehicles spaced therealong, and wherein each of the vehicles includes a double acting hydraulic cylinder mounted thereon for moving the vehicle and the water pipe over the ground. The irrigation unit includes a device for aligning the vehicles, a hydraulic pump with pressure and return lines, and power and retract manifolds respectively interconnecting power and retract sides of the cylinders. The control device includes a hydraulic valve with three positions which communicate the pressure line with the power manifold, the retract manifold, and the pump return line respectively. A timer is operably connected with the valve and regularly sequences the same through a repeating cycle, whereby between the application of pressurized hydraulic fluid to each of the cylinder sides, the control device places the system in a neutral position, in which the hydraulic fluid flows substantially unrestricted through the system for reduced energy consumption, lower fluid temperature, and an extended operating life.

patent: 2470566 (1949-05-01), MacConnel, Jr.
patent: 2674231 (1954-04-01), Erickson
patent: 2796789 (1957-06-01), Rice et al.
patent: 2893643 (1959-07-01), Gordon
patent: 3053053 (1962-09-01), Douglas
patent: 3606161 (1971-09-01), Paul
patent: 3608826 (1971-09-01), Reinke
patent: 3664232 (1972-05-01), Dvirka
patent: 3703990 (1972-11-01), Erickson
patent: 3750953 (1973-08-01), Reinke
patent: 3760688 (1973-09-01), Dummer
patent: 3805896 (1974-04-01), Bauer
patent: 3842943 (1974-10-01), Nakamura et al.
patent: 3937237 (1976-02-01), Boone et al.
patent: 3979062 (1976-09-01), Christensen et al.
patent: 3991578 (1976-11-01), Cooke et al.
patent: 4005731 (1977-02-01), Townsend
patent: 4036436 (1977-07-01), Standal
patent: 4135539 (1979-01-01), Hunter et al.


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