A variable-length extension tube

Abstract

An extension pipe changeable in length comprises a connecting pipe to be extended, an extension pipe body and a clamping pipe. A connecting pipe is arranged on the end portion of the extension pipe body, a positioning grooved hole is reserved in a connecting end of an extension connecting pipe, an extension pipe connecting pipe is provided with a thread, an internal thread is arranged at a connecting end of the connecting pipe to be extended, the connecting pipe to be extended is mounted on the extension pipe connecting pipe, a positioning member arranged at the connecting end of the extension connecting pipe penetrates the positioning grooved hole in the connecting end of the extension connecting pipe and a clamping groove or a clamping hole of the extension pipe connecting pipe to connect the connecting end of the extension connecting pipe with the extension pipe connecting pipe, the clamping pipe is arranged between the end portion of the extension connecting pipe and the end portion of the extension pipe body and comprises two semicircular clamping pipes, the inner diameter of each semicircular clamping pipe is equal to the outer diameter of the connecting pipe of the end portion of the extension pipe body, one ends of the two semicircular clamping pipes are connected through a connecting hinge, a clamping member is arranged on the end face of the other end of one of the semicircular clamping pipes, and a groove corresponding to the clamping member is arranged on the end face of the other end of the other semicircular clamping pipe. The extension pipe changeable in length can be in different lengths according to needs, so that using range of the extension pipe can be widened.

Description

technical field [0001] The invention relates to the field of construction accessories, in particular to a length-variable extension pipe. Background technique [0002] The specifications of steel pipes in the construction market are often fixed, and the steel pipes required for houses are generally longer or shorter than the steel pipes on the market. When the steel pipes required for houses are shorter than the market, there will be a lot of waste if cutting with longer steel pipes , will greatly increase the production cost, so a kind of extension device is needed to increase the length of the steel pipe. Different steel pipes require different lengths. Generally, the extension pipe is fixed, so different steel pipes need different extension pipes. Contents of the invention [0003] In view of the above problems, the present invention designs a length-variable extension pipe, which can be changed to different lengths according to needs, thereby widening the scope of use ...

AI Technical Summary

Problems solved by technology

[0002] The specifications of steel pipes in the construction market are often fixed, and the steel pipes required for houses are generally longer or shorter than the steel pipes on the market. When the steel pipes required for houses are shorter than the market, there will be a lot of waste if cutting with longer steel pipes , will greatly increase the production cost, so an extension device is needed to increase the length of the steel pipe. Different steel pipes require different lengths. Generally, the extension pipe is fixed, so different steel pipes need different extension pipes

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