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犁刀轴管水田密封性太差是用户反映的一个共性问题。在我厂1973年组织的工农-12手扶拖拉机1500小时使用试验中,四台样机在两个试验点也反映了同样的问题。这一问题的出现也暴露了原结构设计犁刀轴管轴向窜动量过大(2~5毫米)的缺陷,为了解决这一问题,1974年春组织了对原结构的改进设计,搞了两个方案,每个方案各试制了两套零(组)件,在黄陂、汉阳试验点进行对比试验。
Coulter shaft tube paddy field seal is poor, the user reflects a common problem. In the 1500-hour trial of workers-peasants-12 walking tractors organized by our factory in 1973, the four prototypes also reflected the same problems at both test points. The emergence of this problem also exposed the original structural design coulter shaft axial movement is too large (2 to 5 mm) defects, in order to solve this problem, the spring of 1974 organized an improved design of the original structure, engage in two A program, each program trial of two sets of zero (group) pieces, in Huangpi, Hanyang test point for comparative tests.