An anti-single ring lifting device

Abstract

The invention discloses a single-hoisting-ring hoisting prevention device and belongs to the technical field of oil drilling equipment. The single-hoisting-ring hoisting prevention device comprises stopping blocks arranged in lower slots of hoisting lugs, and is characterized in that the stopping blocks are fixed in the lower slots through first rotating shafts and provided with sensing components for monitoring the positions of hoisting rings, and trigger blocks are arranged on the inner walls of the lower slots; and the device further comprises a single-hoisting prevention component which comprises a controller, and the controller is connected with the sensing components in a radio mode and used for receiving signals sent by the sensing components to control starting and stopping of traveling blocks. The device can accurately judge whether hoisting rings on the two sides of a lift sub enter hoisting lug holes or not and then send commands for hoisting or non-hoisting, single-hoisting-ring hoisting can be effectively prevented, and hoisting safety is improved.

Description

technical field [0001] The invention relates to the technical field of oil drilling equipment, in particular to an anti-single ring lifting device. Background technique [0002] In drilling engineering, an elevator is a tool used to lift pipes such as drill pipes, oil pipes and casings. It is hung in the lifting rings on both sides of the hook of the hoisting system, so as to lift out or run in the drilling tool, tubing and casing of the wellbore. [0003] During actual use, due to the influence of various factors such as the environment, the lifting ring is easy to slip out of the ear hole of the elevator, causing a major safety accident. In order to prevent the lifting ring from falling off from the ear hole of the elevator, the elevator is usually equipped with an anti-off device. The anti-off device in the prior art mostly adopts a bolt structure, and a longitudinal bolt hole is set at the lifting ear of the elevator, and the bolt is inserted into the bolt hole. It can...

AI Technical Summary

Problems solved by technology

[0008] 1. Due to the integrated structure of the pedal, the limit boss and the ring stopper, the ring stopper is fixed in the boom of the main body of the elevator through the pin shaft. As the gap increases, the ring block is more likely to rotate, and the ring block cannot effectively block the ring, resulting in a reduction in the safety and reliability of the operation process

[0009] 2. When the traveling vehicle is hoisted, it is usually manually checked whether the lifting lugs on both sides of the elevator have been loaded into the lifting rings. Due to human negligence, it is easy to happen that one lifting ring has been installed in the lifting lugs, while the other side is not loaded or If it is not installed properly, the single lifting ring will be lifted directly, which will cause serious safety accidents

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