AGRICULTURAL MULTIPLE-SPAN BRIDGE UNIT Russian patent published in 1998 - IPC

FIELD: agricultural engineering, in particular, equipment for multiple-span sprinkling machines. SUBSTANCE: unit has multiple-tower framework 1 secured on carrier-drive cars 4, multiple-tower movable guide 2 mounted on frame 1, self-propelled cart 3 installed on guide 2 and provided with spring-loaded counterrollers resting upon lower side of guide 2. Self-propelled cart 3 has flexible ladder fixed on drum mounted on cross-piece. Drum has device for retaining it in predetermined position. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 4 cl, 10 dwg