Development and Experiment of a Rice Seed RopeTwisting Machine

摘要

A prototype of rice seeds rope twisting machine was designed. The prototype consisted of 3 parts,which were a seeds metering mechanism by which the seeds were dropped at a strip of 2 cm width paper(unwoven cloth) keeping the distance of 2.5～3cm between the seeds, a seeds rope twisting mechanism bywhich the seeds were twisted in the paper strip turned into a rope and a rolling rope mechanism by which thetwisted paper made seed ropes were rolled up. At the time that the seeds were planted, the seed ropes werehanged on the two sides of the designed seed rope rolling out machine and one end of the rope was fixed atthe land side, the seed rope rolling out machine moved by a tractor or an manpower, along with the movingof the machine the paper made seed ropes were laid in the ditches which were opened by the coulters of themachine and then the seed ropes were covered by the sealers of the machine. Experiments results showedthat the performance parameters such as the average distance between the rice seed hills was 2.5 cm, theratio of hills without any seed to the total hills was 1.5%, the average seed number per hill was 1.48 and therolling number of the paper per unit length was 43 m-1, have achieve the basic design purpose. But roperollingspeed was only 0.8 m?s-1 it should be improved. The most remarkable advantages of rice directsowing using the paper made seed rope were that a big part of rice direct sowing were done in factory.