| 摘要 |
FIELD: agriculture, in particular, boom-type sprinkler units for drop irrigation. ^ SUBSTANCE: boom-type sprinkler unit mounted on tractor includes three-dimension guy rope girder. Tractor carries pump with float-type suction valve, sectioned water supply pipeline with heads, flexible belts and tension members. Sections are mounted in opposed relation on tractor frame. Each section is equipped with pack of telescopically mounted pipes equal in size. Heads are mounted on pipes. Each head in telescopically mounted pipes is made in the form of replaceable flat split washer located in opening channel formed in pipe body. Outer end of telescopic pipe in each section is fitted with threaded coupling having drain opening. End of each inner pipe arranged in cavity of outer pipe is equipped with supporting rings. Profiled nut put onto threaded coupling is equipped with pack of flat sealing rings made of material exhibiting shape memory property. Inner pipes located in cavity of outer pipes are axially aligned with respect to one another by means of supporting rings on inner pipe and profiled nut on outer pipe. Gun sprinkler is mounted at outer end of minimal diameter pipe. Pipeline sections are joined to pump through flexible hoses and flow divider. Each section is mounted on tractor frame through axially aligned cylindrical pivot joints arranged on tractor frame cantilevers. Cantilevered parts of section are kinematically mutually connected to cable on drums through lifting mechanism made in the form of pair of drive winches. Cable branches are connected in pairs with ends of immovable and movable telescopic pipes remote from tractor. Drive winches of lifting mechanism are connected to one another through tension members. ^ EFFECT: simplified construction and reduced metal used for manufacture of sprinkler unit. ^ 9 cl, 7 dwg |
