| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method of connecting, for example, large-bore vertical pipes, when placed, with both pipe axes being in specified lengths compatible or being compatible with each other, even if a worker cannot visually confirm a connection point or hardly corrects the incompatibility of both pipe axes, such as a vertical pipe connecting method allowing the accurate connection of both specified length pipes, without disposing the worker at the connections of the pipes, even when a vertical sewage pipe passage is placed in a vertical sheathing pipe having a large head. SOLUTION: This technique is for placing the pipe passage in the sheathing pipe, arranged in vertical comprises fixing at least one straight rail to the inner wall of the sheathing pipe along the pipe axis of the sheathing pipe, so that the distance between the pipe-axis-side surface of the rail and the pipe axis of the sheathing pipe is set constant, fixing a slider to be slidably in mesh with the rail on the outer periphery face of a pipe provided in the sheathing pipe to form a vertical pipe passage, lowering the slider and the rail in mesh with each other in sequence through the sheathing pipe, and connecting the pipe lowered before and a pipe being lowered to form the vertical pipe passage.</p> |
