Tool for fastening pipeline flange bolts

Abstract

The invention discloses a tool for fastening pipeline flange bolts. The tool comprises two semi-annular shells which are fixedly connected to form an integral circular shell in a detachable mode, wherein the two semi-annular shells are provided with driving assemblies; each driving assembly comprises a sleeve gear, a semi-annular rack and a driving gear; the sleeve gears are distributed in a semi-annular rack groove in the same mode as that of distributing bolt holes of a standard flange; and the sleeve gears are fixedly matched with sleeves for fastening bolts in the circumferential direction. In the tool, the semi-annular racks are driven to move, and the other semi-annular rack is moved by the end part while the semi-annular racks drive the sleeve gears to rotate, so that the sleeve gears of the integral tool are rotated, a plurality of sleeves run synchronously, and a plurality of bolts are fastened synchronously; and by the tool, the work efficiency is improved, using limit is avoided, each bolt is stressed uniformly, the leakage due to non-uniform stress of each bolt is avoided, and the labor, material and economic costs are saved.

Description

technical field [0001] The invention relates to an auxiliary tool for connecting pipelines, in particular to a tool for connecting pipeline flanges. Background technique [0002] In the productive industries where the petroleum, chemical, pharmaceutical, sewage, water supply and other devices operate continuously, the transmission pipeline is the necessary equipment for normal production and transportation. The connection between pipelines generally adopts flange, threaded connection or welding. Among them, flange connection is the most commonly used connection method, especially for high pressure occasions. In order to facilitate installation and disassembly, flange connection is the first choice. The flange connection structure adopts pairing between flanges and connection and fastening through bolts distributed in the circumferential direction. Gaskets are set between the paired flanges, and the gaskets are compressed by tightening the bolts to achieve a sealing effect. ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the flange bolts are tightened by traditional wrench handles, sleeves and other tools, and the bolts are tightened individually by manpower. Not only is the work efficiency low, but the size of the tightening force and the tightening force of each bolt Whether they are uniform or not depends on manual experience

Fastening by pneumatic or hydraulic tools can achieve better results, but it can only be done individually, and there are still errors, and the pneumatic or hydraulic tools themselves have complex structures, large volumes, and high cost of use

Especially for pipe flanges located in corners or ditches in the water supply and drainage field, because the tools of the prior art cannot be used, it is impossible to achieve the required fastening force and uniform fastening force.

It can be seen that the use of traditional tools for pipeline flange fastening construction has problems of limited use and uneven fastening force, resulting in leakage of pipeline flanges during the service life, resulting in a lot of manpower, material and economic losses

Images