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为了落实毛主席“农业的根本出路在于机械化”的伟大教导,根据我省农田基本建设工作的需要,我所同东光县机械厂组成了以工人为主体的“三结合”研制小组,于一九七五年研制成功了为铁牛—55拖拉机配套的河北—80型双圆盘旋转开沟机(图1)。研制工作自一九七四年春开始,经过两代样机的研制和试验工作,一九七五年十二月河北省机械局组织了对该样机的鉴定,认为该样机同铁牛—55拖拉机配套合理,结构简单,工艺性较好,重量轻,使用方便,工作较可
In order to implement the great teaching of Chairman Mao and “the fundamental way out for agriculture lies in mechanization”, according to the needs of the province’s farmland capital construction work, we formed the “three combined” research and development system with Dongguang County Machinery Factory as the main body In 1975, the group successfully developed Hebei-80 double disc rotary trencher (Figure 1) for the Tractor -55 tractor. Since the beginning of the spring of 1974, research and test work has been carried out for two generations of prototypes. In December 1975, Hebei Machinery Bureau organized the identification of the prototype and considered that the prototype is compatible with the Tractor -55 Tractor Reasonable, simple structure, better technology, light weight, easy to use, work more