Browse Publications Technical Papers 660613
1966-02-01

Development of a Hydropneumatic Suspension System for an Earthmoving Machine 660613

The Universal Engineer Tractor (UET), an earthmoving machine, can work as a bulldozer, scraper, rough grader, prime mover, dump truck, cargo carrier, or personnel carrier. Versatility is made possible through the use of a hydropneumatic suspension. Because random variables of terrain and soil are traversed at speeds up to 30 mph, components in the suspension have been subjected to extremely high pressures and to heavy loadings of structural components, due to mechanical feedback. This paper reports on the nature of these problems, describes modifications made to overcome the difficulties, and gives results of subsequent field and laboratory tests.

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