FORCE CONVERTER ON ROPE SUSPENSION Russian patent published in 1999 - IPC

FIELD: scale dynamometer tests of well sucker-rod pump used in oil production. SUBSTANCE: force converter includes two identical primary meters put in base in symmetry to axis passing through centers of attachment points of free ends of rope suspension. Each meter is manufactured in the form of two similar restoring members separated in symmetry relative to axis passing through centers of attachment points of free ends of rope suspension. Restoring members have upper measurement parts of square section their outer sides carry active foil resistance strain gauges. Upper force-sensing pads are produced with flat lower and spherical upper surfaces. Converter is fitted with upper and lower centering shoulders and lower force-sensing pads. EFFECT: increased accuracy, operational reliability and simplified design. 3 dwg