Positioning device for welding metal pipes

Abstract

The invention discloses a locating device used for welding a metal pipe. The locating device comprises a water tank, at least one carrier and at least two limiting devices. The water tank is communicated with a water supply device and the carriers are placed in the water tank. The carriers are used for carrying the metal pipe after water is injected into the water tank. The limiting devices are erected above the carriers and used for limiting the metal pipe. Each limiting device comprises a limiting portion and an adjusting portion, the limiting portions are used for limiting horizontal movement of the metal pipe carried on the carriers in the process that water is injected into the water tank and the carriers rise. The adjusting portions are arranged on the limiting portions in the vertical movement direction of the metal pipe and are used for limiting and adjusting the vertical height of the metal pipe. The water is injected into the water tank to lift up the carriers so as to life up the metal pipe in the mode of buoyancy, then, the position of the metal pipe is adjusted through the limiting portions, so that operation is simpler and more flexible during welding, and therefore the cost is lowered.

Description

technical field [0001] The invention relates to a positioning device, in particular to a positioning device for welding metal pipes. Background technique [0002] At present, the counter-position welding process of metal pipes with a long length (more than 30 meters) usually uses a limiting device to fix the metal pipes before welding. As a result, the precision problem of direct butt joint of metal pipe has just been produced. [0003] In the prior art, limit plates are mostly used for fixing metal pipes, and some limit devices use multiple limit plates to cooperate to limit the movement of metal pipes. The inclination of the metal pipe is adjusted, and the self-inspection work is continuously strengthened in the work area during the production process of the metal pipe. Two people are responsible for pulling the wires, and one person is responsible for measuring and recording to ensure that the deflection and verticality of the guide rail plate are controlled within a ce...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defect that the positioning device of the prior art is relatively complicated in positioning, and provide a positioning device for welding metal pipes that is easier to adjust and lower in cost

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