Iron driller's pliers head automatic balance deflection mechanism

Abstract

The invention relates to an iron roughneck jaw self-balancing deflection mechanism which is suitable for enabling deflection drilling tools and mouse hole drilling tools to be connected with a well mouth in the field of oil drilling and well drilling devices. The iron roughneck jaw self-balancing deflection mechanism comprises a fixed base fixedly connected with an articulated arm support, and a rotating base fixedly connected with a jaw assembly, wherein a supporting shaft which extends to one side of the rotating base is arranged at the center of the fixed base, a shaft sleeve which extends to one side of the fixed base, is arranged on the periphery of the supporting shaft in a sleeved mode and is connected with the supporting shaft in a rotating mode is arranged at the center of the rotating base, balance arms which are perpendicular to the axial direction are symmetrically arranged on the two sides of the middle portion of the shaft sleeve respectively, the tail ends of the balance arms are respectively provided with a balance supporting part, the bottoms of the balance supporting parts are elastically supported against and connected with supporting blocks fixedly arranged on the fixed base respectively, and the supporting direction of each balance supporting part is perpendicular to the axial direction of the supporting shaft. According to the iron roughneck jaw self-balancing deflection mechanism, an iron roughneck jaw can automatically deflect along with the deflection of a drilling tool when clamping the drilling tool, can automatically adjust the deflection angle along with the deflection of the drilling tool, and can automatically reset after releasing the drilling tool.

Description

technical field [0001] The invention relates to the field of oil drilling devices, in particular to an iron driller's tongs automatic balance deflection mechanism suitable for connecting a deviated drilling tool and a mouse hole drilling tool with a wellhead. Background technique [0002] Iron driller is a kind of equipment used to connect the wellhead and mouse hole drilling tools in the process of oil drilling. However, most of the existing iron drillers do not have the deflection function of the jaws, so they can only connect the wellhead drilling tools. And can't carry out the connection operation of drilling tool on the deflected mouse hole. Thereby, restricted the scope that iron driller popularizes and applies. Only a few iron drillers use oil cylinders as power to realize the deflection of the tong head, which not only has a complicated structure, but also is difficult to control the deflection angle of the tong head, and there are problems such as interference with...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the prior art, the present invention provides an automatic balance and deflection mechanism for iron driller's pliers to realize the self-deflection with the deflection of the drill when the iron driller's pliers clamp the drill tool, and the deflection angle can be adjusted along with the drilling. It can automatically adjust the deflection of the tool, and the clamp head will reset itself when the drill tool is released; it solves the problem that the existing iron driller does not have the deflection function of the clamp head, and cannot connect the drill tool with the deflection of the mouse hole

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