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Zhao J.,Jiangsu University | Qiu Z.,Jiangsu Huayuan Irrigation and Drainage Co. | Peng T.,Jiangsu Huayuan Irrigation and Drainage Co. | Tang Y.,Jiangsu University
Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering | Year: 2015

In order to improve the efficiency of hose reel irrigators and broaden the speed range of the water turbine or motor on it, a new kind of transmission system was designed based on three-stage pla-netary gear. This new type of transmission structure contains three gears: the gear of the normal work, power recovery gear and manual recovery gear. The efficiency of new transmission system improves nearly 21%. Aiming at maximizing transmission efficiency and minimizing volume of three-stage planetary gear part, a multi-objective optimization model was established. Traditional optimization algorithms take discrete variables for continuous variables which may cause infeasible results. In order to solve the problems caused by rounding to the module or the number of teeth, genetic algorithm toolbox GADS was used to deal with the mixed discrete variables problems by the multi-objective linear weighting method. The optimized results show that the efficiency of three-stage planetary gears increases 10.64% and volume decreases 16.3%. The newly designed model for the transmission system of hose reel irrigators can be referred in view of the research and development of the new prototype. ©, 2015, Editorial Department of Journal of Drainage and Irrigation Machinery Engineering. All right reserved. Source


Tang Y.,Jiangsu University | Zhao J.,Jiangsu University | Qiu Z.,Jiangsu Huayuan Irrigation and Drainage Co. | Peng T.,Jiangsu Huayuan Irrigation and Drainage Co.
Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery | Year: 2015

Truss type sprinkler cart is one of the main parts of traveller irrigation machine, which plays an important role in modern agricultural irrigation. However, the sprinkler cart may get overturned or broken in the fields because of its large spraying arm span, unreasonable span setting between wheels and/or excessive moisture of the fields. Thus, a parameterized dynamics simulation model was established for type JP75 sprinkler cart in the software ADAMS to improve its abilities of slope-climbing and anti-overturning. Qualitative performances of the sprinkler cart were analyzed based on the proposed model. The slope angle was taken as an evaluation index of slope-climbing and anti-overturning abilities. Several key factors affecting the climbing abilities greatly were optimized, such as attachment coefficient, wheel spacing and centroid height. The bisection method was firstly brought into the simulation of sprinkler cart to accelerate the algorithm convergence. Compared with the current machine, simulation results show that the optimized sprinkler cart improves its stability by increasing the slope angle with 21.48%. Moreover, a physical prototype was developed and a field test was conducted to confirm both the accuracy of the simulation and the validity of the methods adopted. Test results show that both the number of overturn and torsion extent of the cart were decreased greatly with the water distribution uniformity increased dramatically. The abilities of slope-climbing and anti-overturning of truss type sprinkler cart were improved significantly. This paper provides a new method for the design of truss type sprinkler cart. ©, 2015, Chinese Society of Agricultural Machinery. All right reserved. Source

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