Marking mechanism based on bend for cutting arc-shaped petroleum pipeline

Abstract

The invention discloses a marking mechanism based on a bend for cutting an arc-shaped petroleum pipeline. The marking mechanism comprises a left cutting device and a right cutting device; the top of the left cutting device and the top of the right cutting device are each provided with a connecting rod, each connecting rod is provided with a movable rod, and the movable rods of the left cutting device and the right cutting device are connected through hinges; the left cutting device and the right cutting device each comprise a first clamp and a second clamp, a rotation element is arranged between each first clamp and the corresponding second clamp, bosses are arranged at the tail ends of the first clamp and the second clamp and are provided with screws, arc-shaped sliding grooves are formed in the first clamps and the second clamps, movable blocks are arranged in the sliding grooves and provided with steel ropes, and the steel ropes are located in the sliding grooves; and handles are arranged at the tail ends of the steel ropes, and the steel ropes of the left cutting device and the right cutting device are connected through the handles. By means of the marking mechanism, marking of the arc-shaped petroleum pipeline can be carried out, two cutting lines can be cut at a time, the labor is saved, and meanwhile, the working efficiency is improved.

Description

technical field [0001] The invention relates to an auxiliary tool for cutting pipelines, in particular to a line-drawing mechanism based on cutting arc-shaped oil pipeline elbows. Background technique [0002] Petroleum, also known as crude oil, is a viscous, dark brown (sometimes greenish) liquid. There are oil reserves in parts of the upper crust. The nature of petroleum varies with the place of origin, the viscosity range is very wide, the freezing point varies greatly (30-60 degrees Celsius), the boiling point ranges from room temperature to above 500 degrees Celsius, it is soluble in many organic solvents, insoluble in water, but can form with water emulsion. However, the composition and appearance of oil in different oil fields can be greatly distinguished. Petroleum is mainly used as fuel oil and gasoline, and fuel oil and gasoline constitute one of the most important primary energy sources in the world. Petroleum is also a raw material for many chemical industry ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that when manually drawing the cutting line for the arc-shaped oil pipeline with a large pipe diameter, multiple people are required to assist in completing it, and it is impossible to ensure that the drawn cutting line is even, which wastes manpower and improves work efficiency. The purpose is to provide a line-drawing mechanism based on cutting arc-shaped oil pipeline elbows, which can meet the line-drawing of arc-shaped oil pipelines with different radians, and can draw two cutting lines at one time, which is convenient and fast, and improves work efficiency.

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