| 摘要 |
PCT No. PCT/SE82/00174 Sec. 371 Date Jan. 14, 1983 Sec. 102(e) Date Jan. 14, 1983 PCT Filed May 14, 1982 PCT Pub. No. WO82/03964 PCT Pub. Date Nov. 25, 1982.A self-propelled irrigation carriage (1) comprised by an irrigation system and provided with a spraying boom or a high-volume discharge sprayer is movable back and forth on drive wheels (2) between the ends of the area to be irrigated, along a pipe-line (4) laid on the ground. The water is transferred, via a unit (5) connected to said carriage (1) and movable together therewith, to a fluid motor (6) mounted on the carriage for driving the wheels (2) and to one or more spray nozzles on the spraying boom or discharge sprayer. The pipe-line (4) is provided with equidistantly spaced apart clamps (8), each of which accommodates a non-return valve (9) extending through the wall of the pipe-line. The transfer unit (5) has two chains which are passed around sprocket wheels and from which cups (12) are suspended at intervals corresponding to the interspaces between the clamps (8). The cups (12) can be moved in succession into correct position in register with the adjacent clamp (8) and are provided each with one projection depressing the non-return valve (9) when the cup is in correct position.
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