| 摘要 |
A boom applicator of solid mineral fertilizers comprises a power equipment and a semi-trailer, which has a frame, a tank, a running gear, a conveyer, a drive of working elements, a dosing shutter, a fertilizer guide, broadcasting disks, an air brake system and electrical equipment. In the lower part of the tank a horizontal conveyer, which consists of two spirals winded from the middle of the tank in the opposite directions, is built-in. Reducer knees, to which sowing booms with screw working elements are fixed, are attached to a screw covered with loading cases from above on both ends thereof. On the cases of the sowing screws an adjustable slit as a screw spiral is made, and at the ends of screw booms mechanisms to return non-sown fertilizers into the tank with an electric drive from the electrical system of a tractor are built-in. The sowing booms with the screw working elements are completed with truss bars, disk coulters with a clamping mechanism and cylindrical slide valves.
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