Automatic joint coating machine for corrosion proof coating in pipeline

Abstract

The invention relates to an automatic joint coating machine for a corrosion proof coating in a pipeline, which belongs to inner surface spraying liquid of a hollow workpiece and pretreatment equipment. The automatic joint coating machine consists of a drive part, a walking part, a rust cleaning part, a dust collecting part, a spraying part, a monitoring part and a power supply. A machine body comprises three sections which are connected into a whole through hinge shaft ball-head components. The rear part of the machine body is provided with a driving wheel which is driven by a walking motor, and five pairs of driven wheels are arranged in the middle part and the front part. The rust cleaning part uses a motor to drive a rotary rack to rotate, and the rotary rack is provided with three small motors for driving a steel brush to rotate so as to clean the rust. A dirt collector is used for collecting the rust dust. A spraying motor drives a rotary cup to rotate at a high speed and flings and sprays liquid paint to a welded junction area. The automatic joint coating machine can automatically get in and out of a pipeline with the diameter between 700 millimeters and 1000 millimeters andthe depth larger than 1 kilometer. The automatic joint coating machine uses wireless remote control and video images to visually complete overall process joint coating operations of positioning, cleaning the rust, collecting the dust and spraying, has high automation degree and work efficiency and good joint coating quality, provides integrated independent innovation equipment of machinery, electron and communication and has popularization and application values.

Description

(1) Technical field [0001] The present invention relates to a specially designed device for spraying liquid or other fluids on the inner surface of a hollow workpiece, and also relates to the rust removal pretreatment on the surface before spraying. Specifically, it is an automatic sealing machine for anti-corrosion coating in pipelines. (2) Background technology [0002] Before steel pipe laying construction, if internal anti-corrosion is required, the inner surface of a single steel pipe should be sprayed with an insulating anti-corrosion coating in the prefabrication plant, and only a small section at both ends of the steel pipe will not be sprayed. At the pipeline construction site, a single steel pipe is welded into several pipe sections about 1 km long, and then the inner surface of each weld joint is sprayed with an insulating and anti-corrosion layer. The mechanical equipment used for this kind of operation is called "filling machine". Since the 1970s, there have b...

AI Technical Summary

Problems solved by technology

Although the above-mentioned domestic jointing machine is more advanced in technology and more complete in function than its previous foreign jointing machine, because its welding joint positioning, rust removal and spraying are all pre-set procedures, and it is completed independently in the pipe, it cannot be directly observed and real-time. Monitoring the operation makes it difficult to guarantee the quality of rust removal and spraying

In addition, its body structure also has some shortcomings and shortcomings, the climbing ability is not strong enough, and the applicable pipe diameter range is not large enough

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