Novel casing tong jaw plate device

Abstract

The invention discloses a novel casing tong jaw plate device. The novel casing tong jaw plate device comprises a tooth plate, a tooth base and a jaw plate, wherein the tooth plate is clamped on the front end face of the tooth base, an arc face I is formed on the back of the tooth base, steps are symmetrically arranged at the upper end and the lower end of the middle of the arc face I, and an arc face II is formed on the front end face of the jaw plate; limiting bosses matched with the steps are symmetrically arranged at the upper end and the lower end of the middle of the arc face II, and the tooth base and the jaw plate are connected in a relatively rotating mode in the horizontal direction through the steps and the limiting bosses. According to the novel casing tong jaw plate device, the tooth base rotates relative to the jaw plate, so that the position adjustment of the tooth plate is realized, the slipping problem of casing tongs when an eccentric pipe column is clamped is solved, the working efficiency is improved, the labor intensity of workers is weakened, and the cost input for replacing the jaw plate is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of oil drilling, in particular to a novel casing tong jaw plate device. Background technique [0002] Casing tong is a tool for making up and breaking down pipe strings in oil drilling. At present, when the jaw plate of the casing tongs clamps the pipe string through the tooth plate for make-up and breakout, if the pipe string is eccentrically worn, since the tooth plate and the jaw plate are completely fixedly connected together, the casing tongs will often slip. This not only affects the make-up and breakout operation, but also causes damage to the pipe string and even the casing tongs. At the same time, if the jaw plates of corresponding specifications are replaced for pipe strings with different pipe diameters, the labor intensity of workers will be increased, which is not conducive to improving work efficiency and increasing input costs. [0003] China Patent Authorization Announcement No. CN204782840...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a new type of casing tongs jaw plate device to solve the problem that the existing casing tongs jaws mentioned in the above background description are prone to slipping when the eccentric pipe string is clamped by the tooth plate, thus affecting the loading and unloading. Buckle operation will cause damage to the pipe string and casing tongs, and replacing the corresponding jaw plate for pipe strings with different diameters will increase the labor intensity of workers, which is not conducive to improving work efficiency and increasing input costs.

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