Novel iron roughneck pincer clamping slip

Abstract

The invention belongs to the field of petroleum drilling and exploitation equipment, and provides a novel iron roughneck pincer clamping slip. A slip body in the novel iron roughneck pincer clamping slip is fixed to the center of an inner groove of a slip seat; two telescopic oil cylinders are mounted on the two sides of the slip body and distributed in an axial symmetry mode, and the telescopic oil cylinders on the two sides are fixed into the inner groove of the slip seat. One end of a piston rod of each telescopic oil cylinder freely moves in a corresponding hydraulic cylinder, the other end of the piston rod of each telescopic oil cylinder is connected with one end of an oil cylinder hinge seat through a pin shaft, and the other end of the oil cylinder hinge seat is fixed to a slip connecting plate through a pin shaft. When an iron roughneck is in a clamping state, the piston rods of the telescopic oil cylinders on the two sides stretch out, the slip connecting plate is driven to move, then the internal slip body is drawn close inwards, and the effect of clamping an oil tube is achieved. The outer wall of the oil tube can be prevented from being locally abraded, clamping automation control can be achieved easily, oil tube clamping is convenient, and the novel iron roughneck pincer clamping slip can be conveniently applied to various kinds of automatic oil tube clamping equipment.

Description

technical field [0001] The invention belongs to the field of oil drilling and production equipment, and in particular relates to an automatic clamping mechanism for lifting and lowering drill pipes in oil wells. Background technique [0002] Petroleum is an extremely important industrial energy in the world today. In recent years, with the continuous development of the oil drilling industry, the field of oil exploitation has put forward higher and higher technical requirements for oil equipment. Pipeline lifting equipment and tubing moving equipment are the main equipment in the oil field, and the tubing clamping mechanism is one of the most important parts of the above equipment. Therefore, the improvement and innovation of the tubing clamping mechanism has important practical significance. At present, the clamping mechanism adopted by iron drillers has the following defects: 1. Oil wells of different calibers require oil pipes of different sizes, so the clamping block need...

AI Technical Summary

Problems solved by technology

At present, the clamping mechanism adopted by iron drillers has the following defects: 1. Oil wells of different calibers require oil pipes of different sizes, so the clamping block needs to be frequently replaced during work, and the clamping mechanism is relatively complicated, and the loading and unloading of the clamping block is also relatively complicated. It is cumbersome and cannot meet the working requirements of oil pipes changing within a certain size range. 2. The clamping blocks of some oil pipe clamping mechanisms are not evenly distributed around the oil pipe, resulting in partial wear of the outer wall of the oil pipe.

3. At present, the mechanization and automation of elevators commonly used in wellheads is low, and they rely entirely on manual operations by workers. The workers have high work intensity and low working time, and there are potential safety hazards in the process of lifting and unloading oil pipes.

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