Authors: Zoerb, G. C., Musonda, N. G. And R. L. Kushwaha
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Published in: CBE Journal » CBE Journal Volume 25 (1983)

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Description: In field testing of agricultural tillage equipment it is necessary to measure the implement draft from which the power requirements can be determined. The usual procedure is to measure the tractor pull or draft by inserting a dynamometer (force transducer) between the implement and the tractor hitch points. Draft is the horizontal component of pull in the direction of travel. Early drawbar dynamometers of the spring-type were difficult to read due to rapid fluctations of the undamped pointer. Hydraulic dynamometers which consist of a cylinder-piston system connected to a Bourdon tube gage may be damped considerably by placing a restriction valve in the line to the gage. Because of general acceptance by tractor manufacturers, this type of dynamometer is still used to measure draft in the drawbar tests at the University of Nebraska. In recent years there has been an increased use of strain gage dynamometers of various configurations. These units, when operated with electronic readout instruments, can provide multiple ranges and avoid the oil-leakage problem inherent in hydraulic dynamometers. Clyde (1955) described a

Keywords: a combined drawbar pin and force transducer
Citation: Zoerb, G. C., Musonda, N. G. and R. L. Kushwaha 1983. A COMBINED DRAWBAR PIN AND FORCE TRANSDUCER. Canadian Agricultural Engineering 25(2):157-162.
Volume: 25
Issue: 2
Pages 157 - 162
Date: 1983
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Coverage: Canada
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