Polished rod eye bias adjusting device of pumping unit

Abstract

The invention relates to a polished rod eye bias adjusting device of a pumping unit, and the device comprises a hair braid, a polished rod eye, a thrust bearing, polished rod eye caps and a bias adjusting mechanism, and is characterized in that the bias adjusting mechanism comprises polished rod eye clips, adjusting screws, adjusting nuts and a fixed pin; two symmetric polished rod eye clips are respectively arranged on the two polished rod eye caps; one ends of the two polished rod eye caps are fastened by screws, and the other ends of the two polished rod eye caps are connected with one ends of the adjusting screws through a carriage and the fixed pin; the other ends of the adjusting screws connects the adjusting screws of the two polished rod eye clips through the adjusting nuts; and the thrust bearing is arranged between the groove of the polished rod eye cap and the polished rod eye cap of the polished rod eye.

Description

technical field [0001] The invention relates to a maintenance tool for an oil pumping unit, in particular to a deflection adjustment device for a polished rod suspension rope of an oil pumping unit. Background technique [0002] The rope hanger for the polished rod is the key link in the connection of the pumping rod column. Ensuring that the rope hanger moves up and down horizontally is the key measure to keep the polished rod from grinding the wellhead, oil from the wellhead, and braids from breaking and twisting. At present, because the braids are double, the length of the double braids, the quality of each braid, especially the elasticity and expansion coefficient of each braid are difficult to keep the same, because there are many suppliers and the management is not standardized, the braids of various manufacturers are mixed together Phenomena are common. For this reason, the braids are not the same length, the strands are broken, twisted, and broken when the upper and ...

AI Technical Summary

Problems solved by technology

At present, because the braids are double, the length of the double braids, the quality of each braid, especially the elasticity and expansion coefficient of each braid are difficult to keep the same, because there are many suppliers and the management is not standardized, the braids of various manufacturers are mixed together Phenomena are common. For this reason, the braids are not the same length, the strands are broken, twisted, and broken when the upper and lower operating loads are different, and the rope hanger is pulled away or the pumping unit is pulled over to cause serious accidents.

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