Top drive back-up tong torque arm system

Abstract

A backup tong torque arm system for a top drive mainly includes an outer torque arm, a lifting motor, a lifting gear, a rack, an inner torque arm, a back tong device, a suspension damping device and the like. The suspension damping device is installed in the inner torque arm, and the weight of the backup vise device and the inner torque arm acts on the outer torque arm through the suspension damping device through the connecting pin, so that the top drive moves up and down and the impact force of the buckle on the back vise, It is buffered by the suspension shock absorber, which reduces the damage to the equipment; the rack is fixed on both sides of the inner torque arm and installed on both sides of the outer torque arm, and the rack cooperates with the lifting gear; the lifting motor drives the rack up and down through the lifting gear Moving, the inner torque arm and the backup tongs move up and down accordingly, realizing the adjustment of different working heights of the back tongs. The invention simplifies the structure, improves the function, reduces the impact on the equipment, improves the production efficiency, and saves manpower and material resources.

Description

technical field [0001] The invention relates to a back tong torque arm system applied to a top drive, which can carry a large torque and can be automatically raised and lowered. Background technique [0002] At present, the back tong torque arm system in the top drive drilling system at home and abroad is only used as the clamping device of the pipe handler system, which can transmit and bear the torque brought by the back tong make-up and breakout, and the structure is very heavy and complicated. The volume and weight of the parts are relatively large; when installing and removing the upper and lower blowout preventers and the protection joints, it is necessary to use other equipment to manually move the backup tongs, which are heavy and difficult to move; this brings certain difficulties to the replacement of the upper and lower blowout preventers Difficulty, reduce work efficiency. Contents of the invention [0003] The invention proposes a back tong torque arm system ...

AI Technical Summary

Problems solved by technology

[0002] At present, the back tong torque arm system in the top drive drilling system at home and abroad is only used as the clamping device of the pipe handler system, which can transmit and bear the torque brought by the back tong make-up and breakout, and the structure is very heavy and complicated. The volume and weight of the parts are relatively large; when installing and removing the upper and lower blowout preventers and the protection joints, it is necessary to use other equipment to manually move the backup tongs, which are heavy and difficult to move; this brings certain difficulties to the replacement of the upper and lower blowout preventers Difficulty, reduce work efficiency

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