Automatic protection safety elevator

Abstract

The invention discloses an automatic protection safety elevator. The automatic protection safety elevator comprises an elevator body. The left side and the right side of the elevator body are each provided with hanging lugs including the upper hanging lug and the lower hanging lug. Hanging ring locking pins are movably arranged on the lower hanging lugs respectively. An elevator upper cover plate and an elevator lower cover plate are fixedly arranged on the upper end face and the lower end face of the elevator body respectively. An annular groove is formed in an elevator opening in the upper portion of the elevator body. Two movable doors are movably arranged in the annular groove. A spring is connected between the two movable doors. Grooves with inclined faces are formed in the bottoms of the movable doors. Ejector rod set holes are formed in the two sides of the elevator opening of the elevator body respectively. Ejector rod sets are movably arranged in the ejector rod set holes. Movable correcting devices are fixedly arranged at the bottoms of the ejector rod sets. Linkage mechanisms are arranged on the ejector rod sets and located in internal cavities of the lower hanging lugs. The automatic protection safety elevator is reasonable in structure, free of other electrical or hydraulic assistance, capable of saving cost, reducing procedures, lowering labor intensity of workers, saving working time, increasing the tubing operation speed, and safe and reliable in construction.

Description

technical field [0001] The invention relates to a special device for lifting and lowering oil pipe strings in an oil field exploitation operation system, in particular to an automatic protection safety elevator. Background technique [0002] In recent years, with the development of oilfield technology, the increase of labor costs and the strict control of the total labor force, the automation technology of oilfield mining operations is in the ascendant and has made great progress. Elevators are necessary equipment for lifting and lowering pipes during oilfield drilling and workover. At present, simple elevators are widely used in the process of workover operations in my country. This type of elevator has a simple structure, but manual operations are required to clamp and loosen the pipes. For example, two people are responsible for the operation of the elevator at the wellhead position. , Lifting and throwing out of the oil pipe, there is a person at the end of the oil pipe ...

AI Technical Summary

Problems solved by technology

Among them, the lifting and replacement of the elevator, the switch of the valve, the insertion and removal of the safety pin, etc. all need to be completed by two people. If the cooperation is not good or the work is not in place, industrial accidents such as single lifting ring, oil pipe falling off, and hanging ring falling are prone to occur. Personal injury incidents have greatly affected construction safety, and it is cumbersome to operate, with high labor intensity for workers, low work efficiency, and potential safety hazards

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