Three-oil-cylinder pipe column clamping device for iron roughneck

Abstract

The invention relates to an iron roughneck three-oil-cylinder pipe column clamping device which comprises an upper cover plate, six oil cylinder shaft sleeves, three jaw oil cylinders, a lower bottom plate, a clamp tooth seat I, three clamp teeth and two clamp tooth seats II. The clamp is characterized in that the three jaw oil cylinders are installed between the upper cover plate and the lower bottom plate through the six oil cylinder shaft sleeves respectively, the clamp tooth base I is installed at the piston rod end of the jaw oil cylinder in the middle, the two clamp tooth bases II are installed at the piston rod ends of the other two jaw oil cylinders respectively, and the clamp tooth base I and the two clamp tooth bases II are each provided with one clamp tooth. During use, the three jaw oil cylinders are mounted between the upper cover plate and the lower bottom plate in a floating manner, the jaw seat I is connected with the piston rod end of one jaw oil cylinder in the middle, the two jaw seats II are connected with the piston rod ends of the other two jaw oil cylinders respectively, and the jaw seat I and the jaw seats II are driven to move through synchronous reciprocating motion of the three jaw oil cylinders. Therefore, clamping and opening of the tubular column are achieved.

Description

technical field [0001] The invention relates to the field of petroleum machinery and equipment, in particular to an iron driller three oil cylinder clamping pipe string device. Background technique [0002] Iron driller is a tool used in oil field drilling and workover operations to connect and disassemble pipe strings such as drill pipes, drill collars, tubing, casing, sleeve milling barrels, etc. In the process, the double V-clamp-to-clamp type iron driller clamping device is basically used to clamp the pipe string. The partial clamp and pipe string are deformed and damaged from time to time. The jaws are often broken and cannot adapt to the tubing and casing. clamping. However, it is relatively difficult to solve these problems on the oilfield site due to usage habits, cost and other reasons. [0003] To sum up, in order to adapt to the on-site use in oilfield drilling and workover operations, iron drillers must use a new iron driller jaw clamping device for pipe string...

AI Technical Summary

Problems solved by technology

[0002] Iron driller is a tool used for connecting and dismantling drill pipes, drill collars, oil pipes, casings, casing milling barrels and other pipe strings in oil field drilling and workover operations. During the process, the pipe string is basically clamped by double V-shaped pliers-to-clamp type iron driller clamping device. The partial clamping and pipe string deformation and damage occur from time to time. The jaws are often broken and cannot adapt to the tubing and casing. clamping

However, it is relatively difficult to solve these problems on the oilfield site due to reasons such as usage habits and cost.

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