Curved-surface tapered wedge driving and claming pressure maintenance type migration manipulator for drill pipe string

Abstract

The invention discloses a curved-surface tapered wedge driving and claming pressure maintenance type migration manipulator for a drill pipe string. The curved-surface tapered wedge driving and clamingpressure maintenance type migration manipulator comprises a box seat, a clamping oil cylinder, an energy accumulator, a pressure maintenance control valve, a force transfer handle, a wedge plate, guide blocks, a reset pull rod, an adjustable V-shaped bearing, manipulator clamping plates and roller wheels, and is used for cooperating with an automatic pipe racker to realize the operation of clamping, lifting, putting and migrating the drill pipe string, and the like, wherein the clamping oil cylinder is fixedly arranged on a housing through lug seats; the upper part of the force transfer handle is fixedly arranged on a hydraulic telescopic rod by adopting a locknut and a washer; the lower part of the force transfer handle is realized in linkage with the wedge plate by using a neck; the left and right guide surfaces of the wedge plate are in contact with guide rails fixedly arranged on two sides of the box; the manipulator clamping plates and the drill pipe string are driven through theroller wheels; the roller wheels in the rears of clamping plates are in contact with the wedge plate, and are driven by the wedge plate; the reset pull rod is mounted on the wedge plate by adopting two pin bolts; a guide groove of the reset pull rod is used for resetting the manipulator. The drill pipe string is clamped by adopting the roller wheels; the rotational degree of freedom of the drillpipe string can be retained, and the curved-surface tapered wedge driving and claming pressure maintenance type migration manipulator is provided with a special energy accumulation type pressure maintaining circuit.

Description

technical field [0001] The invention relates to a drill string moving manipulator, which is used for clamping the drill string and moving the drill string between the finger beam of the second-floor platform of a deep well drilling rig and a borehole. Background technique [0002] During deep well drilling, tripping operations occupy a large amount of auxiliary time. Usually, in order to save tripping time, drill pipes are mostly transported and unloaded in the form of two, three or more drill pipe strings. At present, in the process of conventional manual drilling operations, in order to complete the unloading work of such drill strings, a driller must operate the lifting rings, elevators or use winches to move the drill pipes on the second-floor platform. Intense and dangerous. In addition, in order to improve the efficiency of connecting and unloading the drill string, higher requirements are usually placed on the driller's operating skills. Even if the drilling system...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a curved surface inclined wedge driving and clamping pressure-preserving drill string moving manipulator according to the deficiencies of the prior art, which is used to solve the problem of long tripping time and labor intensity during deep well drilling. big, dangerous

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