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我县地处渤海沿岸,改良大面积的盐碱地是发展农业生产的关键措施之一。根据改良盐碱地需要,我所于一九七三年五月,试制成功双圆盘旋转开沟机(图1)。经田间试验,效果好,深受贫下中农欢迎。该机目前还在继续试验改进。该机主要由机架、传动箱、工作圆盘、刀片、万向传动轴、支持轮等组成(图2)。工作圆盘是主要工作部件,它是用钢板焊接成的六十度锥角的截锥体,共有大、小两个。大工作圆盘的锥面和大端面上焊有分成五组的十五个刀座;小工作圆盘焊有分成五组的十个刀座。刀片用埋头螺钉紧固在刀座上。工作圆盘线速度选用的范围为7～10米/秒。
My county is located in the coast of Bohai Sea, improve the large area of saline land is one of the key measures to develop agricultural production. Based on the needs of improving the saline-alkali land, I successfully piloted a dual-disc rotary ditcher (Figure 1) in May 1973. The field test, the effect is good, welcomed by the poor middle peasants. The aircraft is still continuing to test improvement. The aircraft mainly by the rack, gearbox, working disc, blade, universal drive shaft, support wheel and other components (Figure 2). Working disc is the main working parts, it is welded into the 60-degree cone angle frustum, a total of small, two. Large working disc cone and large end face welded into the five groups of fifteen knife holder; small work of the welding disc is divided into five groups of ten knife holder. Blade with countersunk screws fastened to the seat. Working disc line speed range of 7 to 10 m / s.