Cone bit cone hole R-groove axial position measuring instrument for oil

Abstract

The invention relates to a special measuring instrument of a cone bit cone hole, in particular to a cone bit cone hole R-groove axial position measuring instrument for oil, comprising a structural body, a propelling cone body and a floater; the structural body is provided with a screw rod which can rotate and drive the propelling cone body to move downwardly through a handle; three inclined planes of the propelling cone body are matched with inclined planes of three detecting head bodies and lead the three detecting heads to protrude out of the structural body; a dial indicator is clamped on a rotary arm by a split collar and a fixed screw, and the other end of the rotary arm is matched with a rotary arm shaft by a copper bush, so that the rotary arm can freely rotary around the rotary arm shaft; the upper part of the propelling cone body is provided with a steel ball; a spring is fixed on the side surface of the propelling cone body by a spring pressed cover; and the screw rod can be tightened so that the three detecting heads can be locked tightly in the R-groove of the cones to be detected. The invention has the beneficial effects of accurately measuring the axial position of the cone bit cone hole R-groove, improving quality and performance of the cone bit and prolonging the service life thereof.

Description

technical field [0001] The invention relates to a special instrument for measuring the cone hole of a cone bit, in particular to an instrument for measuring the axial position of the R groove of the cone hole of the oil-used cone bit. technical background [0002] At present, the roller cone bit used in oil drilling and other mining drilling is used as a steel ball for locking the axial positioning position of the roller cone and the palm shaft. Its runway is similar to that of ordinary rolling bearings, generally called R groove. The accuracy of the axial position is an important technical parameter of the bearing part of the roller cone bit, and its accuracy is directly related to the sealing effect of the bearing of the roller cone bit. The current conventional measuring instruments cannot accurately measure the axial position of the R groove of the cone hole. In the industry, a measuring instrument is needed to solve this problem. The R-groove axial position measuring i...

AI Technical Summary

Problems solved by technology

However, this kind of measuring instrument currently on the market cannot accurately measure the exact value of the axial position of the R groove of the cone hole due to reasons such as technical materials, which seriously affects the sealing effect of the bearing, and the sealing effect of the bearing has a great impact on the bearing. The use time plays a decisive role

The sealing effect is not good or invalid, and the drilling fluid carries impurities such as cuttings into the bearing cavity, the bearing wears out quickly, the roller cone bit is scrapped, and even downhole accidents occur

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