FIELD: agricultural engineering; rice-growing. SUBSTANCE: set has load bearing truss mounted on self-propelled supporting trucks which move along rigid tracks along rice check plots. Two span truss is installed on three trucks. Support mast with guys for truss is secured on middle truck. Ballast weights in form of water filled tanks are fastened on ends of truck to prevent turning over of set at heavy gusts of wind. EFFECT: improved design. 3 cl, 6 dwg
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