Steel pipe lifting carrier roller device

Abstract

The invention relates to a steel pipe lifting carrier roller device arranged on a production line for conveying steel pipes. The steel pipe lifting carrier roller device comprises a first carrier roller and a second carrier roller which support the steel pipes, wherein the first carrier roller and the second carrier roller are respectively rotationally arranged on a first lifting body and a second lifting body; and the first lifting body and the second lifting body are connected with a first motor through transmission mechanisms. Compared with the prior art, the invention can effectively solve the problem that the steel pipes can not normally advance because a suspension segment declines in the advancing process of the steel pipes; particularly, the steel pipe lifting carrier roller device supports the steel pipes and then automatically supports the steel pipes to a needed height by adopting a first oscillating arm and a second oscillating arm as the lifting bodies and a first oil cylinder and a second oil cylinder as driving parts and a matched hydraulic transmission system and realizes the automatic lifting of the carrier rollers by utilizing a sensor and a limit switch, thereby greatly reducing the operation of operators and enhancing the work efficiency; and in addition, the invention prevents the defects of spraying quality, safety accidents, and the like which are caused by the suspension of the steel pipes, and enhances the production efficiency of production lines, i.e. an automatic spraying production line and the like.

Description

technical field [0001] The invention relates to a supporting device for conveying large steel pipes, in particular to a steel pipe elevating roller device used in occasions such as large steel pipe automatic coating production lines. Background technique [0002] The large-scale steel pipe anti-corrosion coating automatic coating production line includes a steel pipe transmission mechanism, a dehumidification and decontamination machine for removing oil and moisture on the steel pipe surface, an automatic shot blasting machine for removing rust and oxide layers on the steel pipe surface, and a steel pipe to be painted. Preheated preheating oven, spray booth, curing room and cooling room. The steel pipe conveying mechanism described therein usually adopts a plurality of roller frames arranged at intervals between the systems. During the production process, the steel pipe is supported on the roller frame group composed of these roller frames, and is conveyed through each roll...

AI Technical Summary

Problems solved by technology

In this way, when the steel pipe travels in the above-mentioned systems, there must be a suspended section, and this part of the suspended steel pipe will sink under the action of gravity, so that the vertical height of the front end of the steel pipe is lower than the height of the roller frame installed downstream between the systems. As a result, the steel pipe cannot travel normally on the downstream roller frame

In addition, due to the length of large steel pipes ranging from 12 to 90 meters, when they move on the roller frame group of the production line, there will inevitably be eccentric movement, causing the suspended section of the steel pipe to swing from side to side, and it is also impossible to safely and stably move on the downstream rollers. landing

Obviously, the above two phenomena will affect the production efficiency of steel pipe spraying and the spraying quality of the surface, and even production accidents will occur in serious cases.

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