초록 ▼

A water delivery machine for delivering water under pressure from a pressurized main line to a linear irrigation system, the main line having spaced risers therealong, and wherein the water is delivered continuously as the linear system moves over the field being irrigated. The machine has fore and

A water delivery machine for delivering water under pressure from a pressurized main line to a linear irrigation system, the main line having spaced risers therealong, and wherein the water is delivered continuously as the linear system moves over the field being irrigated. The machine has fore and aft articulated booms, the inner ends of which are connected to the water conduit of the linear system, and the outer ends of which are connected to couplers. The booms provide water conduits to deliver water from the couplers to the linear system. Each boom includes a conduit section extending generally in the direction of travel of the linear system which is supported on a wheeled cart having inner and outer wheel bogeys. The cart wheels are steered, and at least one of the wheels is driven to drive each of the carts along the main line for alternately and automatically coupling and uncoupling each coupler successively with each riser as the linear system moves over the field to automatically and continuously deliver water first from one coupler and boom and then the other coupler and boom to the linear system.

대표청구항 ▼

In a water delivery machine for delivering water from a pressurized main line to a linear irrigation system, the main line having spaced risers therealong, and wherein said water is delivered continuously as the linear system moves over the field being irrigated, said machine having fore and aft art

In a water delivery machine for delivering water from a pressurized main line to a linear irrigation system, the main line having spaced risers therealong, and wherein said water is delivered continuously as the linear system moves over the field being irrigated, said machine having fore and aft articulated booms, the inner ends of the booms connected to the linear system and the outer ends connected to couplers, said booms providing water conduits to deliver water from the couplers to the linear system, carts supporting the outer ends of said booms and the couplers to which they are connected, and means for alternately and automatically connecting the couplers to the risers as the linear system moves over the field to automatically and continuously deliver water first from one coupler and boom, and then the other coupler and boom, to the linear system, and means for guiding said machine and the linear system to which it is connected, said improvement comprising a cable extending parallel to said main line and defining a path along which the machine and linear system is to travel, each cart having sensing means cooperating with said cable for steering said cart wheels to guide said cart along said cable, said linear system including a main tractor, said cable being laterally displaced from said main tractor, an arm extending laterally from said main tractor, a pivotal linkage having a forward arm section and a lateral arm section and being pivotally connected near the outer end of said lateral arm for pivotal movement about a generally upright axis, the forward end of the forward arm section having means engaging said cable as said linear system travels over the field, whereby displacement of the main tractor relative to said cable causes said linkage to pivot and thereby translate said displacement to a deflection of said lateral arm section, and means for sensing said deflection to affect a corrective movement of said linear irrigation system to maintain within prescribed limits a fixed lateral relationship between said main tractor and said cable.