Power slip capable of realizing on-line quick change of clamp tooth boxes and automatic lubrication

Abstract

The invention aims at providing a power slip capable of realizing on-line quick change of clamp tooth boxes and automatic lubrication, which can realize the quick change function of the slip, increase the pipe diameter clamping range and improve the working efficiency. The power slip comprises a slip housing, a slip upper cover, a slip body and the clamp tooth boxes, wherein a slip upper cover plate is connected with an upper cover pin shaft base through a pin shaft, the upper cover pin shaft base is in bolted connection with the slip housing, the slip body is connected with a swing arm of a lifting oil cylinder through a lifting shaft, the swing arm of the lifting oil cylinder is fixed on a rotating shaft of a left lifting oil cylinder and a right lifting oil cylinder, the left lifting oil cylinder is in bolted connection with the slip housing, the three clamp tooth boxes are connected with the slip body through clamping blocks, and the axial fixing is realized with a clamping plate on the slip body through a convex edge. By adopting the power slip, the degree of automation of the clamping process of the slip is improved, the automation of the clamping process is completely realized, the labor intensity of a worker is reduced, and the safety guarantee is improved. The clamping of the slip and the centering are performed step by step, the working quality is ensured, the quick change function of the slip is realized, the pipe diameter clamping range is increased, and the working efficiency is improved.

Description

(1) Technical field [0001] The invention relates to oil drilling equipment, in particular to a power slip that can be quickly changed on-line and automatically lubricated. (2) Background technology [0002] Slips are mainly used in the field of oil drilling as tools for clamping and supporting drill pipes in wells. At present, most domestic oil and gas field (or geological) drilling projects use double elevators or single elevators plus portable slips when tripping and tripping, which has low automation, low efficiency, high labor intensity, and poor safety performance. High, operation errors will cause major equipment and personal accidents, slips in the process of clamping can easily lead to the eccentricity of the drill pipe and affect the progress of the project. Slip replacement takes a long time, further reducing efficiency. The current power slips have the following disadvantages: the degree of automation is low, and the labor intensity of the workers is high; the w...

AI Technical Summary

Problems solved by technology

At present, most domestic oil and gas field (or geological) drilling projects use double elevators or single elevators plus portable slips when tripping and tripping, which has low automation, low efficiency, high labor intensity, and poor safety performance. High, misoperation will cause major equipment and personal accidents, slips in the process of clamping can easily lead to eccentricity of the drill pipe and affect the progress of the project

Slip replacement takes a long time, further reducing efficiency

The current power slips have the following disadvantages: the degree of automation is low, and the labor intensity of the workers is high; the workers are too close to the construction site, and the safety guarantee is low; the clamping of the slips during work can easily cause the drill pipe to be eccentric and affect the quality of work; slip replacement Time-consuming and reduce work efficiency

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