Drill rod power clamp

Abstract

The invention discloses a drill rod power clamp, and relates to the technical field of drill rod power clamps. The drill rod power clamp specifically comprises a clamp head, a transmission device, anautomatic door, a brake band assembly, a lifting device, a planetary gearbox assembly and a transfer system assembly, wherein the clamp head is assembled in the transmission device; the automatic dooris mounted at an opening of the transmission device; the brake band assembly is positioned and mounted on the transmission device through a hole; the lifting device is mounted above the transmissiondevice; the planetary gearbox assembly is assembled above the rear end part of the transmission device; and the transfer system assembly is mounted behind the transmission device. The drill rod powerclamp has wide range of clamping pipe diameters and large torque; the liquid-gas combined control is adopted, so that the operation is simple; the integral structure of an upper clamp and a lower clamp is adopted, the integral rigidity of the power clamp is enhanced, and the reliability of the power clamp for clamping a drilling tool in a large torque state is ensured; and an upper clamp floatingstructure is adopted, so that the upper clamp and the lower clamp can be automatically centered.

Description

technical field [0001] The invention relates to the technical field of drill pipe power tongs, in particular to a drill pipe power tong. Background technique [0002] Drill pipe power tongs are widely used in drilling and unloading pipe string threads during offshore and land drilling and workover operations. Due to the labor intensity of drilling workers, drill pipe power tongs are suitable for occasions with frequent tripping and long drilling cycles. [0003] The existing drill pipe power tongs are based on the ZQ drill pipe power tongs series, which use the drill pipe power tongs to make up and break out threads, without cat heads, lifting tongs and swivel ropes (or chains), easy to operate, safe and labor-saving , High operating efficiency. [0004] However, the existing drill pipe power tongs do not have the function of automatic switching, the range of clamping pipe diameter is limited, the torque is small, the overall structure adopts a split structure, which incre...

AI Technical Summary

Problems solved by technology

[0004] However, the existing drill pipe power tongs do not have the function of automatic switching, the range of clamping pipe diameter is limited, the torque is small, the overall structure adopts a split structure, which increases the steps of disassembly and assembly, and the overall rigidity of the power tongs is also reduced. Difficult to achieve automatic centering, limited operability

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