| 摘要 |
The present invention relates to a pipe channel adaptor which includes a cylindrical moving body (10) buried and fixed to a manhole wall (24), having radial flanges (12, 14) formed at an inner end portion and an outer end portion, respectively, and having screw thread portions (26, 28) formed at an internal inner portion and an external inner portion, respectively; packing sheets (20, 22) formed inside the radial flanges (12, 14), respectively, by circular protruding portions (16, 18) formed from the radial flanges (12, 14) of the cylindrical moving body (10); an inner cover (32) formed with a cylindrical body (42) having an outer screw thread (30) coupled to the screw thread portion (26) at the internal inner portion of the cylindrical moving body (10) and an expanding cylindrical body (46) extended through a middle wall (44) and in which a radial flange (48) is formed through a packing (51) at the outer end portion to be in close contact with the packing sheet (20); two pairs of semi-circular couplers (66) formed at an inner side surface of the expanding cylindrical body (46) of the cylindrical body (42) through the middle wall (44) to not exceed the width of the middle wall (44) and to face in a diameter direction to be opened toward the inside of the diameter direction; a dome-shaped diaphragm (52) convexly extended to the outside through a thin cut recessed hole (54) at an inner portion of the radial flange (14) formed outside the cylindrical moving body (10); and a cut recessed hole net (58) formed in a shape of a web at a front surface of the diaphragm (52) to remove the diaphragm (52). |
