CAJ | 학술논문

针对目前采用气力-切割组合式红花丝采摘器收获时破碎率高的问题,提出在切割分离前增加梳理整形环节的思路,使粘附在果球上的冠状红花丝在负压气流场中竖立悬浮,显露出红花缩颈切割部位,便于准确切割,从而减少红花丝破碎率. 利用空气动力学理论,以提高吸附效率为优化目标,建立红花丝在气流场作用下梳理整形过程的动力学模型,揭示气流的流动变化规律. 试验测得裕民无刺红花花丝最大迎风面积为 11 ~40mm2 ,当负压气流速度大于2.78 m/s时,即可完成红花丝的梳理整形.
침대목전채용기력-절할조합식홍화사채적기수획시파쇄솔고적문제,제출재절할분리전증가소리정형배절적사로,사점부재과구상적관상홍화사재부압기류장중수립현부,현로출홍화축경절할부위,편우준학절할,종이감소홍화사파쇄솔. 이용공기동역학이론,이제고흡부효솔위우화목표,건립홍화사재기류장작용하소리정형과정적동역학모형,게시기류적류동변화규률. 시험측득유민무자홍화화사최대영풍면적위 11 ~40mm2 ,당부압기류속도대우2.78 m/s시,즉가완성홍화사적소리정형.
The research object of this paper was safflower filament harvest device which based on pneumatic -cutting prin-ciple .In the study ,established dynamical model in the process of the safflower filaments sucking up by air flow ,measured the value of safflower filaments upwind area and calculated the required negative pressure power that made safflower fila -ments rise .And took the larger nozzle outflow and airspeed as optimization objective .The results of safflower filament up-right bench experiment were consistent with the theoretic analysis and simulation conclusion , and showed the correctness of the dynamical model and suction flower mouth orifice shapes simulated analysis .The conclusion in this paper could pro-vide parameters related material properties of aerodynamics for pneumatic safflower harvest machinery , and also provided support of basic theory for developing safflower filaments picking machinery .