Preassembled pipe and manufacturing method thereof

Abstract

The invention provides a preassembled pipe and a manufacturing method thereof. The preassembled pipe comprises a connecting pipe and a clamping sleeve which is provided with a cone apex angle of a set angle, the outer diameter of the connecting pipe is matched with the outer diameter of the large end of the clamping sleeve, and the connecting pipe is inserted into the bottom of the small end of the clamping sleeve via the large end of the clamping sleeve. According to the preassembled pipe, a clamping sleeve with the cone apex angle is utilized, the fixation between the connecting pipe and the clamping sleeve is a rigid fixation so that the connecting pipe and the clamping sleeve cannot be detached easily, and accordingly the reliability of the preassembled pipe is guaranteed. Besides, due to the fact that welding operation is not needed, impurities cannot form on the preassembled pipe and accordingly the preassembled pipe is convenient to clean. In practical application, before the integral installation of an locomotive pipeline, the preassembled pipe can be preassembled, one the one hand, the pipeline installation efficiency is improved, and on the other hand, the stability and the reliability of the connection of the pipeline can be guaranteed.

Description

technical field [0001] The invention relates to mechanical structure technology, in particular to a pre-installed pipe and a manufacturing method thereof. Background technique [0002] The locomotive has pipelines for conveying pressurized air or oil. Pipe joints are used to connect the pipes. There are two types of existing pipe joints: welded pipe joints and elastic pipe joints. [0003] The welded pipe joint includes a joint body and a connecting pipe, both of which are welded and fixed. The elastic pipe joint includes a rubber ring and an elastic ring, and the two are fixedly connected. [0004] The prior art has at least the following problems: for welded pipe joints, the welding operation is time-consuming and laborious, and impurities will form around the weld seam after the solder melts, making it difficult to clean the subsequent pipe joints. For the elastic pipe joint, its elastic deformation is large, and it is easy to deform during use, so that the connection...

AI Technical Summary

Problems solved by technology

[0004] The prior art has at least the following problems: for welded pipe joints, the welding operation is time-consuming and laborious, and impurities will form around the weld seam after the solder melts, making it difficult to clean the subsequent pipe joints

For elastic pipe joints, the amount of elastic deformation is large, and it is easy to deform during use, which makes the connection unreliable, so that the pipe joints fall off during locomotive operation, causing safety accidents

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