Device for marking axis center point of pipeline bent section

Abstract

The invention provides a device for marking the axis center point of a pipeline bent section. The device comprises a machining piece A, a machining piece B, a machining piece C, a machining piece D and a pulling wire; the lengths of the machining piece A and the machining piece B are the same, and the lengths of the machining piece C and the machining piece D are the same; one end of the machining piece A is movably connected with one end of the machining piece B, and the other end of the machining piece A is movably connected with one end of the machining piece D; the other end of the machining piece D is movably connected with one end of the machining piece C, and the other end of the machining piece C is movably connected with the other end of the machining piece B; and one end of the pulling wire is fixed to the connecting position of the machining piece C and the machining piece D, and the other end of the pulling wire is the free end. According to the device, the characteristic that the straight line where the diagonal line of a pair of deltoid unequal angles is located serves as a symmetric axis is utilized, efficient and accurate marking of the axis center point of the pipeline bent section is achieved, and the problem that the mode that the center line of the pipeline bent section is marked by personnel is low in efficiency and poor in accuracy is solved; and particularly through the wire pulling mode, the axis center point of the pipeline bent section can be accurately marked on pipelines with different diameters.

Description

technical field [0001] The invention relates to the field of pipe bends, in particular to a device for marking the midpoint of the axis of a pipe bend section. Background technique [0002] With sliding or stamped bends, such as figure 1 , the pipe that needs to be bent is fixed by the top tire and the pipe holder. When the hydraulic pipe bender moves in the direction shown by the arrow in the figure, it drives the pipe holder to move in the direction of the top tire to realize pipe bending. During the process, the midpoint of the axis line of the pipeline bending section coincides with the scale line of the top tire center, which is the reference for determining the starting point of the pipeline, and is also used to refer to the reference position for calculating the starting point of the next pipeline. Therefore, it is often necessary to mark the The cross section where the midpoint of the axis of the curved section of the curved pipe is located. At present, the midpoin...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a device for marking the midpoint of the axis of the curved section of the pipeline, which solves

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