Technology Research And Trial Of Rotary Tillage And Bury-Stalk

For a long time, the rice production process of our country is finished by people and animal power mainly, production efficiency is low, labour intensity is great, the working environment is abominable, which had influenced the competitiveness in the international market of rice products of our country seriously, dampened rice agricultural enthusiasm , unfavorable to sustainable development, rice of production Especially in double-harvest rice area , its double rush for harvesting and sowing urgent season have farming season, serious production task , hot weather , labour's shortage, peasants need high-quality and high-efficient machinery to replace people and animal power work urgently.The text aims at putting forward a kind of new-type rotary tillage and burying-stalk technology and related machines taking boat tractor as motive force.Trying to reach the sowing and planting requirement of next season in time through pressing stalk → rotary tillage→cutting stalk → burying stalk →smashing soil→levelling off field to the high stalk after reapping on the paddy field. With the stalk after reaping is becoming higher and higher, this technology and related machines is estimated to bury rice stalk with 600mm height and return them into the field. It has deeply meaning and practicality value to the stalk's exploiture and second use, increasing fertility of the field, protecting the environment, saving the sowing and planting time, lighten labour intensity, saving the cost and increasing the efficiency,and providing important use for reference to the mechanization technology development of the returning high stalk into field of the wheat-paddy, cole- paddy, green manure- paddy succession.The technology and testing equipment adopts the boat tractor as motivity, it can not only work normally in the general paddy field , but also in deep mud foot paddy field and even lake land.The new-type roller is the idiographic embodiment of the key technology. It can be divided into two symmetrical parts, which is mainly made up by helix horizontal knife, end tulwar, portrait Li knife, main shaft of the roller , preventing-grass reamer and transmission device,etc. Through the hanging equipment, upgrading and adjust outfit it can carry out the rising and falling and adjust depth of cultivating.Through mechanism research of the technology , its working characteristic and influence factor is comprehend certainly and relative appropriate design parameter is brought forward. The analysis shows the best parameter is that the diameter of the roller is 400mm, the length is 680mm ,both the number of horizontal knife and tulwar at each endare 5, the number of the Li knife is 17-18, both the horizontal knife and tulwar are vertical to the main shaft of the roller, installation angel of the horizontal knife is 72.5°, stagger angel is 46° .The environment parameter the roller can accept is that the height of the stalk is 600mm, The massiness's degree of the soil is about 3.5 kgf/cm1, The density of the stalk is about 231 per m2, the depth of water on field is about 10 mm; the mud foot profundity can orientation 300mm.The advancing velocity of the unit is about0.96m/s, the work rotational speed is about 290r/min,/l?7.The depth of the ploughing can reach 111 mm and it's stability can reach 85% ; The width of the ploughing is about 100 mm and it's stability can reach nearly 100%;The surface roughness after being ploughed can reach nearly 15%; the crushing rate of the stalk can reach 55.4%; the depth of the stalk intered can reach 52.4 mm ;the coverage rate of the stalk >92%.The pure hour-work-rate can reach 2.49mu/h , The oil consume is about \5.6kglhm2.