| 摘要 |
The invention refers to the agricultural machinery industry, namely to the trailer or mounted boom sprayers, meant for chemical protection of plants. The spray boom contains a frame with a central section, equipped with supports (11), and two lateral intermediate sections, joined with the central section by means of inclined hinges, each being equipped with an axle (5), a holder (10) with spring (6) and screw nuts (13, 14). The supports (11) are placed perpendicular to the axles (5) of the inclined hinges, each support (11) has cylindrical surface, onto which there is mounted a bush (12). Into each support (11), the holder (10) and the bush (12) there is made a through hole, through which passes the axle (5), and the holder (10) is made in the form of U-section with the channel width smaller than the outer diameter of the bush (12).
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