| 摘要 |
PROBLEM TO BE SOLVED: To provide a slide nozzle boom capable of expanding and contracting the slide boom to conform with a site, automatically spraying the previously fixed quantity of a liquid chemical, or the like, constantly from a spray nozzle as it is opened even in the case of changing the opening number of the nozzle with the expansion and the contraction of the slide boom and spraying a small quantity of the liquid chemical precisely and uniformly. SOLUTION: The slide nozzle boom is composed of the slide boom 1, which comprises plural booms 2 and 3 formed mutually flexibly along the longitudinal direction and provided with the spray nozzles 4 and 5 at a certain interval and is structured so that the spray nozzle 4 in the boom 2 of one side is automatically closed successively when the spray nozzles 4 and 5 provided with the boom 2 and 3 are overlapped at the time of contracting and the closed spray nozzle 4 is automatically opened successively when the overlapping of the spray nozzles 4 and 5 are released at the time of expanding, and a valve 29 provided in a supply pipe line 32 of the liquid chemical or the like M to the spray nozzles 4 and 5 and for by-passing the supplied liquid chemical or the like M in inverse proportion to the opening number of the spray nozzle 4 corresponding to the contraction of the slide boom 1.
|
