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机力垅作七铧犁从1962年廾始试验研究,经过多次收进,在东北三省进行了中间试验和大面积生产使用,工作质量较好,能满足东北垅作的农艺要求。1964年又在提高使用寿命和生产率、扩大使用范围、降低成本、减轻重量、改进结构和合理选材方面作了进一步改进,并加添了自动划印器。该机在1965年由辽宁和吉林两省小批生产。 一、主要改进 改进后的机型主要由综合悬挂架、四连杆仿形机构、工作部件及划印器等组成(图1)。主要的改
Mechanical strength of seven plow plow from the beginning of 1962 experimental study, after several incomes, in the three northeastern provinces conducted an intermediate test and large-scale production and use, good quality of work, to meet the Northeast agronomic requirements. In 1964, further improvements were made in improving service life and productivity, expanding the scope of use, reducing costs, reducing weight, improving structure and selecting suitable materials, and adding automatic markers. The aircraft in 1965 from Liaoning and Jilin provinces small batch production. First, the main improvements Improved models mainly by the integrated suspension frame, four-link copying agencies, working parts and marking and other components (Figure 1). The main change