| 摘要 |
A manhole structure body is provided to improve the working efficiency by rotating the pipe rotating part on the inner spherical surface of the first connecting part and connecting the inlet and outlet pipes through the manhole. A manhole structure body is composed of a cylindrical or square box-shaped body(10) whose upper side is opened; a cover; at least one first connecting part(30) integrated with the side of the lower surface of the body, communicated with the inside of the body, formed with an inner spherical surface(30a) on the inner surface, and formed with a first screw part(31) on the outer surface; a second connecting part(40) formed with a second screw part(41) on the inner surface; and a pipe rotating part(50) formed with an outer spherical surface(50a) corresponded to the inner spherical surface. An O ring groove is formed in the first connecting part, and an O ring(33) is installed in the O ring groove and closely contacted on the outer spherical surface of the pipe rotating pipe.
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