Improvement of a header сutterbar design

Purpose: substantiation of the design cutterbar header, providing high indicators its maintainability and quality sorghum harvesting. Materials methods: scientific works on research cutting devices headers for grain forage harvesters were used. In 2020 harvesting season, timing operation a harvester equipped with segment-finger cutter an endless knife contour segment failure control device was carried out Premierra variety, basis which laboriousness restoring parts assemblies determined improved cutterbar, assessment plants losses is given. Results. The basic requirements header are given: to ensure various crops varieties agricultural crops; have low energy consumption, reliability structure in wide range operating conditions technological performance; be compact safe maintain. proposed, contains form chain circuit segments, drive, sensor, unit, signaling device, drive brush, while speed sensor analog-to-digital converter additionally connected input output - functionally drive. event failures, unit receives signal corresponding time travels distance equal setting step loop tfact.. compares tfact. given t0. If > t0, then frequency rotation shaft increases until moment when = linear segments maintained at achieved level. When arrives < tmin, sent turn off loop. Experimental studies shown that average labor intensity 2.2 times less than one. addition, it found cuttingedge proposed allows mowing broom height case up three adjacent segments. Conclusion: new contour, sensors failures speed, has been ability automatically regulate ensuring cut plants, by agrotechnical requirements.