The combine rasp-bar cylinder is the major shelling mechanism of the field harvesting machinery used in the Corn Belt. The cylinder shelling efficiency is excellent when operated at recommended levels of grain moisture and machine settings. Corn buyers and processors, however, claim that grain damage during the shelling process has detrimental effects on the finished products. Disciplines
A universal, brushless strain-gauge torque meter employing a force-balance system designed and developed. Full scale reading of recording systems at any given torque range secured by use of changeable conical seat inserts and semi-conductor strain gauges. A universal, brushless strain-gauge torque meter employing a force-balance system was designed and developed. Full scale reading of recordingsystems at any given torque range was secured by use of changeable conical seat inserts and semi-conductor strain gauges.
Disciplines
IntroductionTorque measurement instruments are used extensively on agricultural machinery. Most of the commercial 1 torque meters have limited application because they are designed to work in a specific range for the required precision and usually are quite expensive. There is a need for an economical, universal, continuous-range, precision torque meter. Buchele" 3 designed a continuous-range, hydraulic, torque meter. This unit has been modified and redesigned to provide a high precision, universal, brushless, strain-gauge, torque meter, to operate over the range of 0-50 hp at 540 rev/min. Instead of sensing the twist on a small shaft and transmitting the electrical signal through brushes as done with conventional strain-gauge torque meters." 5 the brushless torque meter detailed in Fig. 1 uses steel balls and conical shaped seat inserts to produce tension in a stationary steel shell. Strain gauges measure the tension in the shell when torque is applied.The range and/or sensitivity is altered by replacing the set of conical inserts, shown in Fig. 2, by another set with the appropriate seat angle for the required working range. The larger the included seat angle, the lower the range of the torque meter.
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