Conceptual Design and Control of a Large Twin Dozer Angle Blade 821033

NCEL has for a number of years been experimenting with automatic and adaptive controls for construction equipment. Earlier progress on this work was presented in SAE papers 750765 and 770551. Included in this paper are descriptions of two technological areas believed ripe for acceptance into new developments with push bladed earthmoving equipment. These areas include blade design and utilization and blade controls. Under blade design and utilization, a large angle blade design concept is presented. The blade is powered by two side-by-side crawler tractors and controlled as a single unit by one operator. The system is designed as a retrofit kit and when fully installed, the blade angle can be changed from straight ahead to 45° right or left without requiring the operator to leave the seat. Under blade controls, automatic and adaptive controls that measure and adjust the cutting blade’s elevation, angle, horizontal position, and thrust are presented. Some of the simplified approaches for designing practical prototype systems are discussed.


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