【摘要】 论述了在研制农大Ⅲ型(2BQM-6A)免耕播种机过程中,对四杆仿形机构、排种盘的投种相位角和整机通过性等方面的改进设计。性能试验和生产应用表明,该机较农大Ⅱ型免耕播种机在播种质量、通过性能和使用可靠性等方面都有很大提高.现已由大连农牧机械厂批量生产。更多还原

【Abstract】 In pace with the extension of the mulch seeding.It is necessary to develop a new type of no-till mulch seeder for further improving its performance.Four linkages profiling mechanism,air-suc- tion seed-metering system and V type press wheel are the main parts of the no-till mulch seeder.These main parts were designed,calculated and tested both in the laboratory and in the field .The results of field experiments in comparison with two types of the no-till mulch seeder(second and third generation) showed that the performance of 2BQM-6A(third generation)are better than the second generation.This 2BQM-6A no-till mulch seeder was passed the appraisal by China Agricultural Machinery Centre and has been produced in batch process since 1991.更多还原