A remote hydraulic control opening type hydraulic power tong

Abstract

Opening type hydraulic power tongs capable of being remotely and hydraulically controlled comprise the full-hydraulic control power tong main tong and the full-hydraulic control power tong back tong. The full-hydraulic control power tong main tong comprises a shell, a tong head clamping mechanism, a transmission mechanism, a hydraulic motor, a hydraulic control safety door, a hydraulic control shift fork mechanism, an opening gear hydraulic control centering reset mechanism, a main tong hydraulic control reversing reset mechanism and a jaw plate reset mechanism. According to the opening type hydraulic power tongs, the hydraulic control safety door is arranged to achieve safe and automatic opening and closing, the hydraulic control shift fork mechanism is arranged to achieve hydraulic control operation of a shift fork mechanism, the opening gear hydraulic control centering reset mechanism is arranged to achieve automatic centering and reset of an opening gear, the hydraulic control reversing reset mechanism is arranged to achieve automatic reversing reset of the main tong and the back tong, and thus the full-hydraulic remote control of the power tongs is achieved. The automatic operation of the power tongs becomes possible, great significance is achieved, and the opening type hydraulic power tongs have the advantages of being novel and ingenious in design, simple and reliable in structure, good in safety, capable of achieving self-protection and the like.

Description

technical field [0001] The invention relates to a power tong for oil field pipes, in particular to a structure of a hydraulic power tong that can be remotely hydraulically controlled, and belongs to the technical field of petroleum equipment design and manufacture. Background technique [0002] A kind of power tongs for pipe is used in the threading and breaking out of tubing, casing, and drill pipe at the wellhead of the oil field, which can make the threaded connection of the above-mentioned pipe string easy to disassemble. The traditional power tongs for oil field pipes are operated by the operator on the side of the power tongs, especially when the door is opened, the pipe string enters the power tongs, the clamping mechanism is reset, and the gear shifting and other actions must be observed and manually operated by the operator. Yes, with the needs of operations, especially the needs of harsh working conditions on site, as well as the needs of automated operations, it i...

AI Technical Summary

Problems solved by technology

The traditional power tongs for oilfield pipes are operated by the operator on the side of the power tongs, especially when the door is opened, the pipe string enters the power tongs, the clamping mechanism is reset, and the shifting and other actions must be observed and manually operated by the operator. Yes, with the needs of operations, especially the needs of harsh working conditions on site, as well as the needs of automated operations, it is necessary to change all manual operations on the power tongs to automatic or hydraulic operations, so that remote control and automatic operations can be realized , and the existing power tong technology does not have the ability of automatic operation, so the remote control and automatic operation technology of power tongs for oilfield pipes are important issues to be solved urgently

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