Inflatable dual-purpose tong floating body lifting device

Abstract

The invention discloses an inflatable dual-purpose tong floating body lifting device which comprises four floating cylinder assemblies, wherein the floating cylinder assemblies are symmetrically distributed on two sides of a floating body; the two floating cylinder assemblies on each side are connected by virtue of a nylon tube, a two-way quick connector and a three-way quick connector and are fixedly arranged on the floating body by virtue of clamps; the three-way quick connectors are connected by virtue of a nylon tube, a one-way valve and a two-way quick connector and are fixedly arranged on the floating body by virtue of clamps, and the three-way quick connectors are connected to the two-way quick connector and a two-way gas switch on the one-way valve by virtue of two ends of the nylon tube; the other end of the two-way gas switch is connected with a gas source by virtue of a nylon tube. By virtue of the lifting device, the floating body of a pair of dual-purpose of tongs can ascend or descend to reset; as for thin-wall sleeves on which tubular columns are difficult to buckle, the clearance between the floating body and a notch gear is regulated, so that a relatively large view field can be obtained, the screw thread connection quality of the sleeves is ensured, the labor intensity of workers is reduced, and the operation efficiency is improved.

Description

technical field [0001] The invention relates to the field of oil drilling, in particular to an inflatable dual-purpose tong floating body lifting device. Background technique [0002] At present, the distance between the center of the tooth plate of the upper and lower clamping device of the general-purpose drill pipe power tongs is constant. When the dual-purpose power tongs for rod and casing are used as casing tongs to lower the casing, the distance of 260mm is too small, and it is impossible to check or directly observe whether the casing is on and off normally, whether it is wrongly threaded, etc., which reduces the quality and efficiency of the operation , thus increasing the difficulty of operation for workers. There is an urgent need for a method that can not only meet the requirements of the standard SY / T5074-2012 for loading and unloading drill pipes, the center distance between the upper and lower die plates is 200-260mm, but also meet the requirements of increas...

AI Technical Summary

Problems solved by technology

[0002] At present, the distance between the center of the tooth plate of the upper and lower clamping device of the general-purpose drill pipe power tongs is constant. When the dual-purpose power tongs for rod and casing are used as casing tongs to lower the casing, the distance of 260mm is too small, and it is impossible to check or directly observe whether the casing is on and off normally, whether it is wrongly threaded, etc., which reduces the quality and efficiency of the operation , thus increasing the difficulty for workers to operate

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