| 摘要 |
FIELD: agricultural engineering, in particular, tillage tools. ^ SUBSTANCE: working tool for ridger has curved tine, A-hoe attached to curved tine, and moldboard with wings. Moldboards of working tool consist of two symmetrically arranged halves and are pivotally fixed. Pivot joints are protected from penetration of soil into zone between shields rigidly fixed to tine. Lateral loads occurring during soil tillage and transmitted to working tool are reduced upon rotation of moldboards. On encountering of obstacle, respective half of moldboard is bent aside, and working tool bypasses said obstacle with lower draft and at lower loading of constructional members. After bypassing said obstacle, the given half of moldboard returns to the initial position by means of pushing-apart spring with adjustable compression force. ^ EFFECT: reduced draft during engagement with obstacles such as stones, decreased lateral loading transmitted to tine, and increased service life of tool. ^ 3 dwg, 1 ex |
