PIPE TRANSPORT DEVICE AND PIPE JOINING METHOD INSIDE PIPELINE CONSTRUCTION SHAFT
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United States of America Patent
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Issued Date -
Jun 9, 2022
app pub date -
Mar 19, 2020
filing date -
Mar 19, 2020
priority date (Note) -
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Abstract
A pipe joining method includes a moving of a first transport trolley with a loaded first pipe and a second transport trolley with a loaded second pipe forward, a joining of one end of the first pipe to another end of a rearmost pipe of a pipeline, a lifting of another end of the first pipe, a moving of the first transport trolley and the second transport trolley backward, a drawing of the first transport trolley from beneath of the first pipe to the near side, a removing of a coupler to separate the first transport trolley and the second transport trolley, a moving of the first transport trolley backward, a drawing of the first transport trolley below the second pipe loaded on the second transport trolley, and a moving of the second transport trolley forward with the first transport trolley.
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