RU94043334A - Strain gauge balance transducer - Google Patents

Abstract

FIELD: strain gauge balances. SUBSTANCE: transducer uses a vertical strain-gauging unit having two force arms in the form of angle pieces with coupled parallel vertical and horizontal flanges, three parallel flexible small beams, resistance strain gauges and force arm vertical limit stops; the force arm vertical flanges are interconnected by the above flexible small beams with formation of a parallelogram suspension; the middle flexible small beam is secured in the grooves made in the vertical flanges of the force arms; the resistance strain gauges are formed on the middle flexible small beam; the horizontal flanges of the force arms are made with an overlap of the vertical limit stops are positioned on the ends of the vertical flanges and on the surfaces of the horizontal flanges located opposite them with a guaranteed gap in each pair of the above limit stops. The novelty is that the transducer is furnished with an additional strain-gauging unit identical to the main strain-gauging unit; both strain-gauging units are positioned in the same vertical plane, installed in an anticonsecutive order relative to each other and interconnected by adjacent horizontal flanges of the force arms. EFFECT: enhanced accuracy of weighing.

Claims (1)

The invention improves the accuracy of weighing. The sensor contains a vertical force measuring unit having two power arms in the form of corners with pairwise parallel vertical and horizontal shelves, three parallel elastic beams, strain gages and limiters of vertical movements of the power arms, while the vertical shelves of the power arms are interconnected by the said elastic beams with the formation of a parallelogram suspension , the middle elastic beam is fixed in the grooves made in the vertical shelves of the power arms, the strain gauges are formed on the middle elastic oh ravine, horizontal shelves power shoulder performed with overlapping ends of the vertical flanges power shoulders, and guides vertical movements of the power shoulders arranged at the ends of the vertical shelves and their opposing surfaces of horizontal shelves with clearance in each of said pair of delimiters. What is new is that it is equipped with an additional force measuring unit identical to the main force measuring unit, while both force measuring units are located in the same vertical plane, are installed relative to each other in an on-off-serial pattern and are rigidly interconnected along adjacent horizontal shelves of power arms.